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A security system includes at least one audio sensor and alarm panel, each located at a premises and generating alarm report data through a communications network to at least one alarm receiver located at a central station remote from the premises. A line card receives the alarm report data. An alarm receiver processor receives and processes regulated alarm report data in accordance with Underwriter Laboratories 1610 requirements. A line card is operable for receiving non-regulated alarm report data that is not regulated in accordance with Underwriter Laboratories 1610 requirements and establishing a bi-directional link for the non-regulated alarm report data between any central station automation system and the alarm panel at the premises until the bi-directional link is no longer required.
1. A security system for monitoring security within at least one premises, comprising:
at least one audio sensor and an alarm panel connected to the audio sensor and each located at the premises and generating alarm report data, wherein the alarm panel transmits the alarm report data through a communications network connected thereto; and
at least one alarm receiver located at central station remote from the premises that receives the alarm report data transmitted from the alarm panel through the communications network, and comprising a line card that receives the alarm report data and an alarm receiver processor that receives and processes regulated alarm report data in accordance with Underwriter Laboratories 1610 requirements, and further comprising a central station automation system, wherein said line card is operable for receiving non-regulated alarm report data that is not regulated in accordance with Underwriter Laboratories 1610 requirements and establishing a bi-directional link for the non-regulated alarm report data between the central station automation system and the alarm panel at the premises until the bi-directional link is no longer required.
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11. A central station alarm receiver, comprising:
a receiver backplane;
a line card that receives regulated and non-regulated alarm report data transmitted over a communications network from a remote alarm panel located at a premises, wherein the regulated alarm report data is in accordance with Underwriter Laboratories 1610 requirements and the non-regulated alarm report data is not regulated in accordance with Underwriter Laboratories 1610 requirements; and
an alarm receiver processor that processes regulated alarm report data, said line card and alarm receiver processor operable for establishing a bi-directional link for the non-regulated alarm report data between any central station automation system and the alarm panel at the premises until the bi-directional link is no longer required.
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20. A method for monitoring security within at least one premises, comprising:
generating alarm report data from at least one audio sensor and an alarm panel connected to the audio sensor and each located at the premises;
transmitting the alarm report data through a communications network to at least one alarm receiver located at central station remote from the premises and which includes a line card that receives the alarm report data and an alarm receiver processor that receives and processes regulated alarm report data in accordance with Underwriter Laboratories 1610 requirements; and
receiving non-regulated alarm report data that is not regulated in accordance with Underwriter Laboratories 1610 requirements within the line card and establishing a bi-directional link for the non-regulated alarm report data between the central station automation system and the alarm panel at the premises until the bi-directional link is no longer required.
This application is based upon prior filed copending provisional application Ser. No. 60/969,990 filed Sep. 5, 2007.
This invention relates to alarm systems, and more particularly, this invention relates to alarm systems in which alarm signals as alarm report data are forwarded from an alarm panel at a premises to a central station.
Commonly assigned U.S. Pat. No. 7,391,315, the disclosure which is hereby incorporated by reference in its entirety, discloses a security system that uses various audio sensors as audio microphones located at one or more premises. In one non-limiting embodiment set forth in the '315 patent, the audio sensors receive audio signals and convert the audio signals to digitized audio signals. An audio sensor can receive audio signals and converts the audio signals to digitized audio signals, which can be processed at a central processor. In some aspects, the remote security or fire alarm systems can generate "reports" and transmit the reports to a central station alarm receiver.
The central station alarm receiver (hereinafter identified as an "alarm receiver"), accepts incoming calls or connections with "reports" from remote security or fire-alarm systems, through a variety of communication paths. The most common communications paths are PSTN dial-up circuits, point-to-point radio circuits and/or the internet. The "reports" generated by conventional security or fire-alarm systems include alarm messages, equipment status messages, and periodic communications-check messages.
For connections over PSTN dial-up and point-to-point radio circuits, some models of alarm receivers use plug-in circuit boards called "line cards", or "channel-cards", to allow flexibility in the number and/or type of communication circuits supported by the alarm receiver. In general, line cards have an interface to the alarm receiver main processor system, and implement one or more modem circuits than can communicate with the remote security or fire-alarm systems. For each modem, the line card typically also has a physical interface connector for the corresponding communications circuit.
In the United States, central station facilities generally only use alarm receiver systems that are listed under UL (Underwriters Laboratories) standard 1610: "Central Station Burglar-Alarm Units," the disclosure which is hereby incorporated by reference in its entirety. If the central station operates as a UL-listed facility, it is mandatory to use alarm receivers listed under this UL standard.
The UL-1610 standard requires that an alarm receiver be able to operate independently of any central station "automation software." The most practical way to meet this requirement is for the alarm receiver to process internally any and all reports it receives from remote security or fire alarm systems, regardless of the communications path (PSTN dial-up, point-to-point radio, internet) through which the report was received.
In addition to validating the received report, and generating any automatic message-receipt acknowledgement required by the remote system, the alarm receiver must be capable of independently performing these actions:
a) presenting the report information (including the unique account-number information identifying the reporting system) on a display device built into the alarm receiver;
b) generating an audible and/or visible annunciation of new reports;
c) logging the report information in a non-volatile memory system, for later review or further processing;
d) providing some mechanism for a human operator to acknowledge physically receipt of the report; and
e) directing a copy of each report to a printing device, which may be a part of the alarm receiver or electronically connected to the alarm receiver.
It should be understood that the UL standard allows operator-managed acknowledgement to be performed at an operator console that is part of the central station automation system, which is a software-based system. However, the alarm receiver must be capable of reverting to local (front-panel) operator-managed acknowledgement if the automation system becomes unavailable.
After the alarm receiver has accomplished these processing functions, it can optionally forward the alarm report data to any "automation software" that is in use at the central station.
In practice (particularly where several alarm receivers are installed in a central station facility), operators don't normally interface directly with alarm receivers. Instead, they handle received alarm reports on computer workstations that are part of the automation system. However, alarm receiver conformance to the UL 1610 standard ensures that the central station can respond to alarms if the automation system becomes unavailable.
In this UL-specified framework for communications between alarm receivers and conventional remote security or fire alarm systems, there are some important common characteristics of PSTN dial-up and/or point-to-point radio connections between the remote system and the central station:
a) except for a few special cases, the data-flow is unidirectional . . . from the remote system at the premises to the alarm receiver in the central station;
b) each connection is maintained only long enough for the remote system to transmit the report and receive any automatic message-acknowledgement from the alarm receiver; and
c) report data (alarm messages, remote system status messages, periodic communication-check messages) are always processed internally by the alarm receiver, before the report information is forwarded to any central station "automation software."
These special cases are unique features in the remote system that can be controlled from the central station. To allow the bi-directional communications necessary for these remote system features, matching non-standard communications protocols and processes should be implemented on both the remote (premises) system and the alarm receiver. For the alarm receiver to retain its necessary UL listing, these non-standard protocols and processes must be compliant with the UL 1610 standard.
A security system includes at least one audio sensor and alarm panel, each located at a premises and generating alarm report data through a communications network to at least one alarm receiver located at a central station remote from the premises. A line card receives the alarm report data. An alarm receiver processor receives and processes regulated alarm report data in accordance with Underwriter Laboratories 1610 requirements. A line card is operable for receiving non-regulated alarm report data that is not regulated in accordance with Underwriter Laboratories 1610 requirements and establishing a bi-directional link for the non-regulated alarm report data between any central station automation system and the alarm panel at the premises until the bi-directional link is no longer required.
The bi-directional link can be formed of audio data transmitted back and forth between the central station and the premises. The non-regulated alarm report data can comprise at least one of digitized audio and control messages. The regulated alarm report data comprises at least one of account data from the premises, audible or visible enunciation of an alarm report, and acknowledgements. The alarm report data can also be formed as audio data collected at the at least one audio sensor and transmitted from the alarm panel.
In one aspect, the alarm panel is operative for digitally encoding alarm report data and transmitting the digitally encoded alarm report data across the communications network to the at least one alarm receiver. The line card comprises a modem processor that forwards the digitally encoded alarm report data to the central station automation system. The line card further comprises a modem processor for receiving alarm report data from legacy alarm panels as analog communication signals using Frequency Shift Keying (FSK) signaling, and digitizing the analog communication signals as digitally encoded data and forwarding the digitally encoded data to the central station automation system. A terminator circuit has a plurality of analog front end devices and communications interface devices for interfacing with the communications network comprising a Public Switch Telephone Network (PSTN). The bi-directional link can be terminated when a central station operator determines that the bi-directional link is no longer required.
In another aspect, a central station alarm receiver that includes a receiver back plane and line card received in the receiver back plane with the alarm receiver processor is set forth. A method aspect is also set forth.
Other objects, features and advantages of the present invention will become apparent from the detailed description of the invention which follows, when considered in light of the accompanying drawings in which:
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.
Central station alarm receivers can now include a line card that solves the technical problems described above. In accordance with a non-limiting example, a computational subsystem is implemented on the line card to analyze communications from the remote calling system. This subsystem detects any report information that is "regulated," and directs the corresponding report data to the alarm receiver for processing. In one aspect, the report data within the "regulated" communications is directed to a backplane connector on the line card, where it is available to the main-processor of an alarm receiver. In this case, the alarm receiver processes the report information in the same manner as it would for any conventional remote security or fire-alarm system.
When the computational subsystem detects report information from the remote system that is "non-regulated", the resulting information is directed through an alternate path to central station automation software. The alternate path bypasses the alarm receiver main processor.
Upon receiving the "non-regulated" information, the central station automation software can establish a bi-directional link to the remote system through the line card modem system and communications-circuit interface. The central station automation software system can maintain this bi-directional link until an operator or some automatic process determines it no longer needs to be maintained.
The computational subsystem can be implemented on a separate processor device on the line card, or can be implemented in software on a processor that performs any or all of the other line card tasks.
In yet another aspect, a secondary communications channel is physically implemented on the line card to provide a path for "non-regulated" communications to be routed exclusively to the central station automation software system, and not to the main processor of the alarm receiver.
In one aspect, the line card includes a secondary communications channel that is implemented as a single Ethernet connection on the back panel of the line card and supports "non-regulated" communications simultaneously for a plurality of PSTN dial-up connections implemented on the line card (four in a non-limiting example).
When the computational subsystem and secondary communications channel are applied to the line card, they can be supported with minor changes in the alarm receiver software and operation. These alarm receiver changes can be implemented in a manner that does not impair the alarm receiver's ability to meet the requirements of the UL-1610 standard. After the alarm receiver changes have been applied and the alarm receiver has been retested by UL for conformance to the UL-1610 standard, later changes to the line card design or firmware do not necessitate any further tests of the alarm receiver.
Thus, according to one aspect, a network interface, such as an Ethernet interface, is implemented on the line card to communicate non-alarm panel signalling such as digitized audio and control messages to the central station automation software. In yet another aspect, the line card "operating system" is implemented to control the routing of alarm-message signals to the receiver system and route non-alarm alarm-panel signalling such as the digitized audio and control messages to the central station automation-software through the line card network interface.
The premises portion of the alarm system could include the intellibase control panel 48, including its various inputs that are connected to different hubs and different digital audio sensors (DAS). A DSP or other processor could be located on a control panel and act as a neural network analyzer. The digital audio sensor can operate as an audio conversion system. An equivalent digital audio sensor could be used for hardware and software built into a control panel. The digital audio sensor could have four or eight or more microphones or subsystems. The system could include an acoustic (audio) recognition engine (ARE). It should be understood that different microphones can be enabled and disabled through a control mechanism in the control panel. Five-second sound clips can be sent independently to the acoustic recognition engine. The signals from microphones are candidates for recognition by the acoustic recognition engine. For each microphone, a set of coefficients can be determined, corresponding to the rate-of-rise or average amplitude coefficients. Each digital audio sensor could send captured sound clips as packets over the Ethernet. These messages could arrive at the acoustic recognition engine. A digital signal processor at each digital audio sensor could determine if the sound clips should be analyzed. This could be similar to an event trigger. The content can be analyzed to determine if further analysis is required. There is some correlation of parameters, for example, determining the difference between a gunshot and thunder.
The five-second sound clips are evaluated by a digital signal processor or other processor on each digital audio sensor to determine if they are eligible for further analysis. The microphones can be identified by the input that they are connected to at each digital audio sensor module and have a unique address in the system to be enabled and disabled. Once the system determines that the event qualifies as an alarm, the five-second clip can be forwarded to the central station either through an IP connection or through a modem connection. High quality MPEG4 compression can be used.
The acoustic recognition engine and the neural network analysis can determine if threshold conditions are met for further analysis and the information and data from microphones can be mixed digitally to provide an aggregate signal to a central station monitoring system. One stream of data can extend from an alarm panel to the central station as a digital stream and compressed. Mixed audio can be digitally mixed at each digital audio sensor. The digital streams can be digitally mixed at each stage where a digital audio sensor is located on the network. Digital streams can be combined at each stage. It is a linear system in one aspect. The data can arrive as an aggregate mix at the alarm panel at which the acoustic recognition engine circuit is located.
In one aspect, the line card is formed as part of a receiver line card subsystem, for example, a Bosch receiver as described above. The card can be placed into a receiver back plane. The receiver can store different alarm reports and include an IP connection and Ethernet interface. The receiver can be part of a monitoring station and include a display, printer and control panel operated by an individual. There could be a serial-to-Ethernet converter to allow the connection of the receiver to the central station. The receiver can forward the alarm message to the central station as part of an automated system.
The line card can process the Ethernet message. The acoustic recognition engine can be in a control panel illustrated as an intellibase control panel. Different coefficients can be used as part of an analysis system that analyzes the audio clips before compression and extract coefficients used in the processing. A coefficient development system can be implemented such that coefficients can be analyzed at different sites and nuisance sounds removed. Parameterization can be accomplished to determine if different sound parameters justify further analysis of alarms. The algorithm can look at the characteristics of the sound parameters. Sounds can be run through a training system to create a training set. There could be artificial intelligence learning in the system used with training sets.
The line card host processor 64 includes a digital signal processor 69 such as an Analog Devices Blackfin BF-532 DSP that is operative with a reset supervisor circuit 70, a 2 (two) megabyte SPI flash RON 71 in one non-limiting example, a 128 megabyte SDRAM 72, and crystal oscillator (25 MHz) 73. The components are interconnected as illustrated with the various communication circuits and interrupt lines, address lines and other bus lines.
The line card system includes line terminator circuit board 84 and line card processor circuit board 60, together forming the line card system. These boards could be installed as an inter-connected pair in any of the line card "slots" of a central station alarm receiver such as Bosch D6600 alarm receiver as a non-limiting example. In one non-limiting example, there are eight line card slots.
Each line card pair 60, 84 (hereafter referred to simply as "line card" for purposes of description and referred generically by the description numeral 193) can support up to four concurrent dial-up calls from either legacy alarm panels, or new "Intellibase" alarm panels such as shown and described in
When reporting an alarm event, the alarm panels differ from "conventional" alarm panels in that they will typically also transmit audio signals from one or more microphones (the "audio sensors") located at the protected premise. Legacy alarm panels transmit this audio to the central station as an analog signal. The Intellibase panels transmit audio to the central station as a digitally encoded signal. The line card 93 makes the audio information from either legacy or Intellibase alarm panels 37 available to the "IP" central station automation system through an Ethernet port that in one aspect is an integral part of the line card.
While conventional alarm panels will typically hang-up the telephone connection immediately after successfully delivering an alarm report to a central station receiver, the telephone connection with the alarm panel, in accordance with a non-limiting aspect, will normally be maintained until a central station operator determines that it is no longer necessary to continue monitoring audio from the protected premise.
The modem subsystem such as the included modem processor 74 in the line card 93 receives alarm calls from legacy alarm panels using Bell-103 FSK signaling as a non-limiting example. When legacy alarm panels transmit analog audio to the central station, the modem digitizes the received audio, so that it can be communicated to the IP central station automation system through a line card 10BASE-T/100BASE-TX Ethernet port. In the case of calls from Intellibase alarm panels, such as 37 in
Two Analog Devices Inc. "Blackfin" ADSP-BF532 DSP-controller devices as processors 69, 78 are used on the line card such as shown in
The description proceeds relative to a Bosch alarm receiver system as described above in a non-limiting example. Eight line card slots can be included on the receiver backplane connector 62 and implemented as an electrical subset of the PC 8-bit ISA (Industry Standard Architecture) bus in a non-limiting example.
An example of the ISA-bus signals that can be bussed across the slot connectors are DATA 0-7, IO_ADDR 0-2, /IOR, /IOW, and RESET as non-limiting examples. A separate/SELECT signal can be provided to each line card slot connector. Each line card slot connector carries an individual interrupt-request request signal from the line card to a receiver CPU (processor). This subset of ISA signals allows the receiver CPU to communicate with the line card via x86 byte IO instructions.
Other than power connections, none of the other ISA and proprietary signals that are provided on the line card slot connectors are used by the line card. Each slot connector would typically have three ground pins, and two pins for each of the +5V, +12V and −12V power-supply voltages in a non-limiting example.
The B_RST line card reset signal as shown in
A semaphore latch circuit 67 can be reset in the dual-port (DP) RAM 64. An asserted LC_RESET condition as shown from the level shift 68 and reset circuit 70 in
Communication between the receiver CPU and the line card is transferred through the dual-port (DP) RAM 64 and associated host-bus interface 63. The heart of this subsystem is a Cypress Semiconductor CY7C135-25 dual-port (DP) SRAM 64. This device has a 4K�8 static Random Access Memory (SRAM) array that can be independently accessed with two separate sets of address, data and control signals. The two different sets of interfaces are typically identified as the left and right 'ports' and includes the address sequencer 65 and level shift 66. This circuit does not include any arbitration circuitry and it is possible to perform simultaneously a "read" on one port while performing a "write" access to the same byte location on the other port. The results of such an operation are undefined. On the line card, arbitration for access to the dual-port memory subsystem is managed by the separate semaphore latch circuit 67.
The receiver CPU (processor) 29 accesses the dual-port SRAM through address-sequencer circuits 65 connected to left port address inputs. The line card host processor 64 accesses the dual-port SRAM 64 through a right port circuit including buffer 66 in a non-limiting example. Addressing is routed through buffers. Right port data is transferred into or out of the SRAM through any buffer circuit.
Any of the byte locations (4096 in this example) in the DP-SRAM 64 can be addressed by either the receiver or the line card host-processor circuit 63 a. In a current receiver implementation, only the first 1024 locations of DP-SRAM are used.
The dual-port SRAM 64 does not include any internal arbitration logic. A "read" on one port at the same address where the other port is undergoing a "write" can result in incorrect data being read from the device. To prevent conflicts due to simultaneous DP-SRAM left and right access, semaphore latches have been implemented on the line card, a receiver-CPU DP-SRAM access latch, and a line card host-processor DP-SRAM access latch (only one is illustrated as 67).
The receiver backplane provides +5V and �12V power-supply voltages at each slot connector. Because the interface at the slot connector operates at 5V logic levels, the Dual-Port RAM subsystem and companion semaphore-latch logic operate at 5V. All other components of the line card operate at 3.3V power-supply and logic levels. Voltage translation occurs in a buffer and transceiver devices.
With a 5V �10% supply voltage, the DP-SRAM circuit has the following logic-level specifications as a non-limiting example:
A data-bus transceiver can operate from a line card 3.3V supply, and offers the same VOH and VOL characteristics as any buffer devices. For the receive direction (when the host-processor circuit 63 a is reading data from the DP-SRAM 64), the minimum VIH is 2.0V, and the maximum VIL is 0.8.
With the host-processor 63 a asynchronous-interface timing characteristics set to allow for reasonable settling times (primarily allowing for capacitive loading), this combination of buffer and transceiver devices provides adequate margins for the interface between the line card 5V and 3.3V logic systems.
A National Semiconductor LM2852Y-3.3 fixed-voltage switching regulator can provide 3.3V power used on the line card in a non-limiting example. This integrated device is laser-trimmed to operate at a chosen output voltage, and requires very few external components. The inductor and capacitor values can be chosen to operate optimally at 650 mA output current, with a nominal 5V input.
The line card host-processor including the DSP as 69 an Analog Devices Inc. Blackfin BF-532 controller in one non-limiting example. The core section of this device can operate at up to 300 MHz. The controller (DSP) 69 in one non-limiting example has 80K bytes of internal high-speed memory that can be configured as instruction or data cache and/or SRAM. The extensive set of on-board 10 hardware supports external SDRAM, asynchronous memory and IO devices, serial devices and SPI devices. Almost all of these peripherals can be supported by the DMA capabilities of the controller. Other built in peripherals include two flexible timer systems, 16 general-purpose IO pins, and two high-speed serial communication ports.
The reset input of the host processor 69 is managed by a Texas Instruments TPS3820-33 Power-On Reset Controller 70 in one non-limiting example. This reset controller will assert its active-low reset output during power-on while the supply voltage is less than 2.93 volts. Also, after the reset output has been negated (allowing the processor to start operation), any time the supply voltage drops below the 2.93 V threshold, the controller will re-assert the reset output.
The reset controller 70 (also termed reset supervisor circuit) can have a watchdog input. After the controller comes out of reset, an uninterrupted stream of pulses can be received on the watchdog input, or the controller will generate a momentary reset. A useful feature of the watchdog function is that it does not start operating until at least one pulse occurs on the watchdog input. This greatly simplifies debugging any watchdog keep-alive software.
The reset controller 70 also has a Master Reset input that can be used to force a reset when the supply voltage is above the 2.93V threshold and a valid watchdog keep-alive signal is present. On the line card, this active-low Master Reset input is driven by the LC_RESET signal. The LC_RESET signal is produced by a receiver backplane reset circuit and extend through the backplane connector 62.
A CM309-series 25 MHz crystal 73 controls the clock frequencies of the host-processor 63 a. This crystal drives a software-configurable PLL in the processor 69, and the core clock and system-clock for any processor peripherals are generated with software-configurable dividers running off of a phase-locked loop (PLL) in a non-limiting example (not shown).
A ST M25P40 4 Mbit SPI-serial Flash ROM 71 is connected to the host DSP processor 69 through a SPI bus as illustrated. This flash ROM contains firmware for both the host processor 69 and the modem processor that includes the DSP processor 78. The host DSP processor mediates the transfer of the modem processor firmware from this Flash ROM 71 to the modem processor 74.
The host DSP processor 69 can have different pins, which can be used for the following functions:
The host DSP processor 69 communicates with the modem DSP processor 78 through the host DSP processor's SPORT0 high-speed serial communications interface as illustrated. The host DSP processor SPORT0 interface is connected to the modem DSP processor SPORT1 interface. Both the primary and secondary channels of these SPORT interfaces are interconnected.
The host DSP processor 69 boots from the SPI Flash ROM 71. A boot-loader program first loads a small "exe" file that contains the program to load the remainder of the host processor firmware from the Flash ROM. The host processor 63 a operating firmware then transfers the operating firmware for the modem processor 74 from the Flash ROM with the modem processor in the processor "boot from SPI Host" mode. The modem DSP processor 71 is also an Analog Devices Inc. BF-532 controller, identical to the line card host DSP processor 69 in this non-limiting example. The core section of the modem DSP processor 78 can be powered by a switching regulator controller built into the processor.
A CM309-series 24.576 MHz crystal 73 as noted before controls the clock frequencies of the host processor 63 a. This crystal drives a software-configurable PLL (not shown) in the processor, and the core clock and system-clock for the peripherals are generated with software-configurable dividers running off of a PLL. This crystal frequency has been chosen to allow operation of the modem processor 74 SPORT0 interface at the correct frequency for driving a AFE serial-bus daisy-chain.
Different pins (not all illustrated) on the modem processor 74 are used for the following functions in a non-limiting example:
The four AFE's 87 (
The firmware for the modem processor 74 can be stored in the SPI Flash ROM 71 connected to the host DSP processor 69. After the host DSP processor 69 has completed its boot process, and begins execution of the firmware, it moves an image of the modem processor firmware to the host processor SDRAM 72. The host DSP processor 69 then releases a modem processor reset, and loads the firmware into modem DSP processor 78 memory spaces. The host DSP processor 69 acts as the SPI master for a "slave boot operation."
In non-limiting examples, there are four identical telephone-line interface circuits that include the parallel AFE's 87 on the terminator circuit board 84 as shown in
On the terminator circuit board 84, each AFE 87 can be a separate Teridian 73M1903C AFE (Analog Front End) device, which performs digitization of audio signals on the secondary side of the coupling transformer as shown in
The four AFE's 87 are connected to the modem processor 74 on the processor's SPORT0 high-speed serial data-bus. This data-bus is routed through the processor circuit board to a terminator circuit board interconnect 85. The AFE's are connected to the single high-speed serial-bus through a TDMA daisy-chain arrangement. All clocks for operation of the AFE's are provided through this high-speed serial bus.
In addition to its signal-conversion functions, each AFE 87 has eight general-purpose IO pins (not illustrated in detail). On the line card design, four of these lines on each AFE are used for these purposes:
AFE analog transmit and receive signals are connected to the secondary side of a coupling transformer 89 through several RC networks (not shown). The purpose of these networks is to optimize the interface between the APE and the connected telephone "loop" over the range of expected impedance conditions and signal levels, for the chosen coupling transformer. AN analog power-supply pin of each APE 87 is decoupled from the digital supply with a ferrite bead.
The various Ethernet and internet networking protocols supported by the line card are implemented with a Wiznet W3100A "Silicon Protocol Stack" circuit 81. This device provides protocol functionality via a hardware implementation. The protocol stack circuit 81 is interfaced to the host-processor 63 a through the processor's asynchronous memory system, using a host-processor AMSO synchronous-memory select as a non-limiting example. The clock for the protocol stack circuit is a 3.2�5 mm 25 MHz oscillator 82 in a non-limiting example.
The protocol stack circuit 81 communicates with an Ethernet PHY 91 on the terminator circuit board, through a standard MII interface. The MII signals are routed between the two circuit boards through a 48-pin interconnect.
A physical-layer 10BASE-T/100BASE-T Ethernet interface can implemented using a Teridian 78Q2123 PHY device 91 as a non-limiting example on the terminator circuit board of
A RJ-45 jack 92 with integrated magnetics provides the physical connection to the network. This jack includes built-in link-status LED's (
The four bi-color LED line-status indicators (
There now follows a description of security systems such as described in the incorporated by reference and commonly assigned U.S. Pat. No. 7,391,315. Those described circuits, components and modules can be modified to use the line card 93 as described relative to
In this type of security system 20, typical operation can occur when a sound crosses a threshold, for example, a volume, intensity or decibel (dB) level, causing the control panel 126 to indicate that there is an intrusion.
A short indicator signal, which could be a digital signal, is sent to the central monitoring station 130 from the control panel 126 to indicate the intrusion. The central monitoring station 130 switches to an audio mode and begins playing the audio heard at the premises 121 through the microphone at the audio sensors or modules 122 to an operator located at the central monitoring station 130. This operator listens for any sounds indicative of an emergency, crime, or other problem. In this system, the audio is sent at a 300 baud data rate over regular telephone lines as an analog signal.
In a more complex control panel 124 used in these types of systems, it is possible to add a storage device or other memory that will store about five seconds of audio around the audio event, which could be a trigger for an alarm. The control panel 124 could send a signal back to the central monitoring station 130 of about one-half second to about one second before the event and four seconds after the event. At that time, the security or alarm system 120 can begin streaming live audio from the audio sensors 122. This can be accomplished at the control panel 124 or elsewhere.
This security system 120 transmits analog audio signals from the microphone in the audio sensor or module 122 to the control panel 124. This analog audio is transmitted typically over the phone lines via a Plain Old Telephone Service (POTS) line 128 to the central monitoring station 130 having operators that monitor the audio. The central monitoring station 130 could include a number of "listening" stations as computers or other consoles located in one monitoring center. Any computers and consoles are typically Underwriter Laboratory (UL) listed, including any interface devices, for example phone interfaces. Control panels 124 and their lines are typically dedicated to specific computer consoles usually located at the central monitoring station 130. In this security system 120, if a particular computer console is busy, the control panel 124 typically has to wait before transmitting the audio. It is possible to include a digital recorder as a chip that is placed in the control panel 124 to record audio for database storage or other options.
The audio sensor 144 is typically formed as an audio module with components contained within a module housing 144 a that can be placed at strategic points within the premises 142. Different components include a microphone 146 that receives sounds from the premises. An analog/digital converter 148 receives the analog sound signals and converts them into digital signals that are processed within a processor 150, for example, a standard microcontroller such as manufactured by PIC or other microprocessor. This processing can occur at the central station in some embodiments, where the receiver such as shown in
The transceiver 154 is also connected into a digital/analog converter 156 that is connected to a speaker 158. It is possible for the transceiver 154 to receive voice commands or instructions from an operator located at the central monitoring station or other client location, which are converted by the processor 150 into analog voice signals. Someone at the premises could hear through the speaker 158 and reply through the microphone. It is also possible for the audio sensor 144 to be formed different such that the microphone could be separate from other internal components.
Although the audio sensor shown in
Door contacts 161 and other devices can be connected into an audio sensor as a module. The audio sensor 144 could include the appropriate inputs as part of a jack 160 for use with auxiliary devices along a single data bus 155. Some audio modules 144 can include circuitry, for example, the transceiver 154 as explained above, permitting two-way communications and allowing an operator at a central monitoring station 162 or other location to communicate back to an individual located at the premises 142, for example, for determining false alarms or receiving passwords or maintenance testing. The system typically includes an open wiring topology with digital audio and advanced noise cancellation allowing a cost reduction as compared to systems such as shown in
It is possible to encode the audio at the digital audio sensor 144 and send the digitized audio signal to a premises controller 166 as part of a control panel in one non-limiting example, which can operate as a communications hub receiving signals from the data bus 55 rather than being operative as a wired audio control panel, such as in the system shown in
Some digital phone devices multiplex numerous signals and perform other functions in transmission. As a result, a "pure" audio signal in analog prior art security systems, such as shown in
As shown in
It is also possible to separate any receivers at the central monitoring station 162 away from any computer consoles used for monitoring a premises. A portion of the product required to be Underwriter Laboratory (UL) approved could possibly be the central station receiver 178. Any computer consoles as part of the central monitoring station could be connected to the local area network (LAN) 182. A central station server 194 could be operative through the LAN 182, as well as any auxiliary equipment. Because the system is digital, load sharing and data redirecting could be provided to allow any monitoring console or clients 190, 192 to operate through the local area network 182, while the central station server 194 allows a client/server relationship. A database at the central station server 194 can share appropriate data and other information regarding customers and premises. This server based environment can allow greater control and use of different software applications, increased database functions and enhanced application programming. A firewall 196 can be connected between the local area network 182 and an internet/worldwide web 198, allowing others to access the system through the web 198 and LAN 182 if they pass appropriate security.
At a central monitoring station 162, an operator typically sits at an operator console. The audio is received as digitized data from the digital audio sensors 144 and received at the central station receiver type II 178. Other analog signals from the analog audio modules 122, control panel 126 and telephone line 128 are received in a central station receiver type I 180. All data has been digitized when it enters the local area network (LAN) 182 and is processed at client consoles 190, 192. The clients could include any number of different or selected operators. Load sharing is possible, of course, in such a system, as performed by the central station server 194, such that a console typically used by one client could be used by another client to aid in load balancing.
Problem accounts are also accounted for and software services provide greater client control, for example, for account information, including a client/server application at the application host 212, which can be a web-based product. Customers can access their accounts to determine security issues through use of the worldwide web/internet 198. Data can pass through the firewall 196 into the local area network 182 at the central monitoring station 162 and a customer or local administrator for a franchisee or other similarly situated individual can access the central station server 194 and access account information. It is also possible to have data back-up at the application host (ASP) 212 in cooperation with a client application operated by a system operator. Outside technical support 214 can access the central monitoring station 162 local area network 182 through the internet 198, through the firewall 196, and into the local area network 182 and access the central station server 194 or other clients 190, 192 on the local area network. Technical support can also access equipment for maintenance. The system as described relative to
There may also be central monitoring stations owned or operated by a franchisee, which does not desire to monitor its site. It is possible to have monitoring stations in secure locations, or allow expansion for a smaller operator. With a web-based, broadband based station, it is possible to monitor smaller operators and/or customers, franchisees, or other clients and also locate a central monitoring station in a local region and do monitoring at other sites. It is also possible to use a virtual private network (VPN) 230, as illustrated in
It should be understood that some pattern recognition can be done at the audio sensor 144 as a microphone with appropriate processing capability, but also pattern recognition could be done at the premises control panel or at the central station or a combination of these. For example, if common noises exceed a certain threshold, or if a telephone rings, in the prior art system using analog audio sensors 122 such as shown in
In the security system as illustrated, there is sufficient processing power at the audio sensor 144 with associated artificial intelligence (AI) to learn that the telephone is a nuisance as it recognizes when the phone rings and does not bother to transmit a signal back to the central monitoring station via the premises controller. There could be processing power at the central station for such functions if complicated audio sensors as described are not used.
There are a number of non-limiting examples of different approaches that could be used. For example, intrusion noise characteristics that are volume based or have certain frequency components for a certain duration and amplitude could be used. It is also possible to establish a learning algorithm such that when an operator at a central monitoring station 162 has determined if a telephone has rung, and resets a panel, an indication can be sent back to the digital audio sensor 144 that an invalid alarm has occurred. The processor 156 within the digital audio sensor 144 can process and store selected segments of that audio pattern, for example, certain frequency elements, similar to a fingerprint voice pattern. After a number of invalid alarms, which could be 5, 10 or 15 depending on selected processing and pattern determination, a built-in pattern recognition occurs at the audio sensor. A phone could ring in the future and the audio sensor 144 would not transmit an alarm.
Any software and artificial intelligence could be broken into different segments. For example, some of the artificial intelligence can be accomplished at the digital audio sensor 144, which includes the internal processing capability through the processor 150 (
An algorithm operable within the processor of the premises controller 166 can determine when all audio sensors 144 went off, and based on a characteristic or common signal between most audio sensors, determine that a lightning strike and thunder has occurred. It is also possible to incorporate an AM receiver or similar reception circuitry at the premises controller 166 as part of the control panel, which receives radio waves or other signals, indicative of lightning. Based upon receipt of these signals and that different audio sensors 144 generated signals, the system can determine that the nuisance noise was created by lightning and thunder, and not transmit alarm signals to the central monitoring station 162. This could eliminate a logjam at the central monitoring station and allow intrusion to be caught at the more local level.
The field equipment shown in
The digital audio sensor 144 could include different types of microprocessors or other processors depending on what functions the digital audio sensor is to perform. Each audio sensor typically would be addressable on the data bus 155. Thus, an audio sensor location can be known at all times and software can be established that associates an audio sensor location with an alarm. It is also possible to interface a video camera 168 into the alarm system. When the system determines which audio sensor has signaled an alarm and audio has begun streaming, the digital signal could indicate at the premises controller 166 if there is an associated camera and whether the camera should be activated and video begin from that camera.
As indicated in
It should be understood that intrusion noises include a broad spectrum of frequencies that incorporate different frequency components, which typically cannot be carried along the phone lines as analog information. The phone lines are typically limited in transmission range to about 300 hertz to about 3,300 hertz. By digitizing the audio signals, the data can be transmitted at higher frequency digital rates using different packet formats. Thus, the range of frequencies that the system can operate under is widened, and better information and data is transmitted back to the central monitoring station, as compared to the analog security system such as shown in
Enhanced operating efficiency could include load balancing, decreased activations, decreased misses, increased accounts per monitor, and integrated digital capability for the alarm system. Disaster recovery is possible with shared monitoring, for example, on nights and weekends. This enables future internet protocol or ASP business modules. The existing wired control panel used in prior art systems is expensive to install and requires difficult programming. It has a high cost to manufacture and requires analog technology.
The premises controller 166 as part of a control panel is operative with digitized audio and designed for use with field equipment having addressable module protocols. The 300 baud rate equipment, such as explained with reference to
There are many benefits, which includes the digitizing of audio at the audio sensors. Digital signal processing can occur at the audio sensor, thus eliminating background noise at the audio sensor. For example, any AC humming could be switched on/off, as well as other background noises, for example a telephone or air compressor noise. It is also possible to reduce the audio to a signature and recognize a likely alarm scenario and avoid false alarm indications for system wide noise, such as thunder. The digital audio sensors could record five seconds of audio data, as one non-limiting example, and the premises controller as a control panel can process this information. With this capability, the central monitoring station would not receive 25 different five-second audio clips to make a decision, for example, which could slow overall processing, even at the higher speeds associated with advanced equipment. Thus, a signature can be developed for the audio digital sensor, containing enough data to accomplish a comparison at the premises controller for lightning strikes and thunder.
Although some digital audio can be stored at the premises controller of the control panel or a central monitoring station, it is desirable to store some audio data at the digital audio sensors. The central monitoring station can also store audio data on any of its servers and databases. This storage of audio data can be used for record purposes. Each audio sensor can be a separate data field. Any algorithms that are used in the system can do more than determine amplitude and sound noise level, but can also process a selected frequency mix and duration of such mix.
There can also be progressive audio. For example, the audio produced by a loud thunder strike could be processed at the digital audio sensor. Processing of audio data, depending on the type of audio activation, can also occur at the premises controller at the control panel or at the central monitoring station. It is also possible to have a database server work as a high-end server for greater processing capability. It is also possible to use digital verification served-up to a client PC from a central monitoring station server. This could allow intrusion detection and verification, which could use fuzzy logic or other artificial intelligence.
The system could use dual technology audio sensors, including microwave and passive infrared (PIR) low energy devices. For example, there could be two sets of circuitry. A glass could break and the first circuitry in the audio sensor could be operative at microamps and low current looks for activation at sufficient amplitude. If a threshold is crossed, the first circuitry, including a processor, initiates operation of other circuitry and hardware, thus drawing more power to perform a complete analysis. It could then shut-off. Any type of audio sensors used in this system could operate in this manner.
The circuit could include an amplitude based microphone such that when a threshold is crossed, other equipment would be powered, and the alarm transmitted. It could also shut itself off as a two-way device. It is possible to have processing power to determine when any circuitry should arm and disarm or when it should "sleep."
As noted before, there can be different levels of processing power, for example at the (1) audio sensor, (2) at the premises controller located the control panel, or (3) the central monitoring station, where a more powerful server would typically be available and in many instances preferred. The system typically eliminates nuisance noise and in front of the physical operator at a central monitoring station. Any type of sophisticated pattern recognition software can be operable. For example, different databases can be used to store pattern recognition "signatures." Digital signal processing does not have to occur with any type of advanced processing power but can be a form of simplified A/D conversion at the microphone. It is also not necessary to use Fourier analysis algorithms at the microphone.
This application is related to copending patent application entitled, "SYSTEM AND METHOD FOR MONITORING SECURITY AT A PREMISES USING LINE CARD WITH SECONDARY COMMUNICATIONS CHANNEL," which is filed on the same date and by the same assignee and inventors, the disclosures which is hereby incorporated by reference.
Many modifications and other embodiments of the invention will come to the mind of one skilled in the art having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is understood that the invention is not to be limited to the specific embodiments disclosed, and that modifications and embodiments are intended to be included within the scope of the appended claims.
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Necropolis by Anthony Horowitz
Reviewed by Kimberly Y., 11th Grade, Villa Madonna Academy
Four have gathered. The fifth still wanders… In the fifth book in the Gatekeepers series, fans of Anthony Horowitz are not going to be disappointed. Action abounds, both abroad and within the homes of the Gatekeepers. As the search for the fifth Gatekeeper continues, the evil aura of the Old Ones continues to plague the world. Is this the end of the world as we knew it? Or will five teenagers be able to save us from destruction?

subset: commoncrawl


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Women's Soccer Preseason Ranked No. 19
MORGANTOWN, W.Va. – The West Virginia University women's soccer team is ranked No. 19 in the Soccer America Preseason Women's Top 25 Poll.
The Mountaineers, the defending Big 12 Conference regular-season champions, are the highest-ranked league team in today's poll. Baylor, the conference's defending tournament champion, is No. 22.
WVU's spot in the Soccer America Preseason Poll is the team's only preseason ranking. The Mountaineers, selected No. 1 by the conference coaches in the Big 12 Conference Preseason Poll, are receiving votes in the National Soccer Coaches Association of America (NSCAA)/Continental Tire Preseason Poll.
Defending National Champion North Carolina is ranked No. 1 in today's poll. Penn State, the Mountaineers' season-opening opponent, is ranked No. 2, while UCLA is No. 3, Stanford is No. 4 and Notre Dame is No. 5.
In total, WVU will play four teams ranked in today's poll: UNC, PSU, No. 8 Duke and Baylor.
The Soccer America Top 25 Poll will be released each Tuesday during the regular season.
The Mountaineers open their 2013 season this Friday, Aug. 23, at 7:30 p.m., against the Nittany Lions in the Penn State Invitational at Jeffrey Field, in University Park, Pa. WVU will face Syracuse in the Invitational on Sunday, at 2:30 p.m., also at Jeffrey Field.
Big 12 Media Days: Dana Holgorsen
Women's Soccer: Amanda Hill and Mocha
Big 12 Media Days: Nick Kwiatkoski
Football: Dana Holgorsen on ESPN
Big 12 Media Days: Day One Report
Men's Basketball: Summer Update


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Road Construction
New 9th Street Bridge dedicated by Mayor Gray, local leadersComment
The new bridge replaces a 70-year-old bridge over the train tracks along New York Avenue. It features wider lanes and sidewalks to give more space to bicyclists.
New York Avenue bridge construction begins MondayComment
The new traffic headache on New York Avenue in Northeast that started Sunday will get even worse Monday--and will last for two years.
New York Avenue road work to snarl trafficComment
DDOT will begin work in late April to fix the bridge between Penn Street and Florida Avenue NE.
I-66 repaving to last 20 monthsComment
VDOT will be repaving six-and-a-half miles of highway between the Beltway and Route 50 over the next 20 months.
Constitution Avenue construction to stretch into 2012Comment
Constitution will see lanes being shut down between 15th and 23rd Streets NW throughout the rest of the year.
Cheverly Road construction, Presidents Day
I'm sure everyone has noticed the incredible amount of road construction in Cheverly over the past few months.
Surovell: McDonnell transportation plan shortchanges Fairfax County
VDOT estimates our construction revenue shortfall to be $6-7 billion. The plan will provide enough money to fund Virginia's construction needs for about nine months.
Route 7 to expand to six lanes to ease congestion
Leesburg Pike, will be expanded by one lane in each direction from Tysons Corner to Reston thanks to $10 million in funding from the state of Virginia.
Middle Georgia Avenue construction nears Park View, DDOT to Give presentation at ANC 1A meeting
The Middle Georgia Avenue Great Streets construction has finally reached the proverbial gates of the Park View section of the project.
InterCounty Connector to open February 22
The first phase of the InterCounty Connector will open to traffic on February 22. The ICC will be an interstate-quality highway eventually running from Gaithersburg to Laurel, although this first phase only runs from Gaithersburg to Georgia Avenue.
Route 123 Southbound closes overnight
The full closure of Westpark Bridge, which connects Westpark Drive to Tysons Corner Center over Route 123, started Wednesday, Feb. 2, and continues through Friday, Feb. 4.
Supervisors question road priorities as funding plan advances
Some county supervisors Monday night raised questions about how two long-awaited road projects made it onto the state's radar.
Richmond hammers on Arlington HOT lanes lawsuit
Arlington County has been widely criticized for its aggressive lawsuit over the proposed Interstate 395 HOT lanes expansion, which includes allegations that individual state and federal officials committed civil rights violations in approving the project. In a time of significant economic troubles and governmental budget challenges, the county has reportedly paid over $1 million in legal fees advancing this case.
TJ Street Bridge to reopen; 29th St. Bridge to close next week
The District is in the middle of a multi-year project to completely reconstruct the bridges over the canal on 29th, 30th, and Thomas Jefferson.
VDOT plans to expand Eads Street off-ramp
VDOT is planning to widen the ramp from the HOV lanes of I-395 to Eads Street in Pentagon City. The project would add an extra turn lane to the ramp, which often gets backed up during the morning rush hour.
Middle Georgia Avenue Great Streets Project progressing
Earlier this month, representatives of DDOT updated the ANC 4C community on the progress of the Great Streets project between Otis Place and Webster Street, NW. The project has a total construction contract amount if $7,906,624.05 and is currently about 35% completed.
Work continues on highway projects
It's a good thing you stopped by. We've got a lot of information on local road construction and lane closures.
Utility work prolonged on Columbia Pike, rough ride remains
Utility relocation work along Columbia Pike in the Barcroft area has been delayed.
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Only On 7
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What I don;t get and granted I'm not expert but why are the levels going above the normal range. If your testosterone is low then sure it needs to be brought back up to normal levels. One would think that proper treatment would be to bring the levels back up to normal and keep them in that range not spike really high one day and really low a few days later.
Someone just needs to go Wiggum on Belfort, and we'll get our answers...
Nm... never works.
The guy tested more hotly than Vitor, lied under oath to an official AC inquiry, got to use TRT regardless; plagiarizes half of his unfunny PR, and there are still fans who are into his bullshit because he's willing to take unearned title shots at a moments notice.
Meanwhile, Vitor has a certified doctor testify under oath that he treated him for an injury thinking he wouldn't be fighting, and fans are convinced he's been a juicer for years. He's willing to fight at anyone at any weight, but sonnen gets more credit for being a gamer. Vitor mentions his faith--after turning to that faith with the horrific loss of his sister--but rehashes of Superstar Billy Graham are more palatable to the average new jack.
Vitor deserves scrutiny, but he's certainly not alone in that.
All manner of men came to work for the News: everything from wild young Turks who wanted to rip the world in half and start all over again -- to tired, beer-bellied old hacks who wanted nothing more than to live out their days in peace before a bunch of lunatics ripped the world in half.
Dr. Hunter S. Thompson
The Rum Diary
Yeah, Bye.
Haven't we seen reem and chael above 5x the limit or am I high?
You say shark I say hey man, Jaws was never my scene and I don't like Star Wars
However... Chael actually made a seemingly valid point, when "defending" Overeem's positive test. Obviously taking it with a grain of salt, because it was Chael that stated it. But he claimed that the ratio doesn't necessarily mean that someone has a high testosterone level, but could in fact have a low epitestosterone level. That of course would make the testosterone half of the ratio look through the roof. Jesus, this shit is too complicated, which is probably one of the reasons the commissions banned the shit all together.
But beyond that, I don't recall seeing any sort of ng/dL levels from either fighter, as there is with Vitor. Just testosterone/epitestosterone ratios.
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sigma 15-30,how good this lense
Started Aug 22, 2007 | Discussions thread
Regular Member • Posts: 182
sigma 15-30,how good this lense
Aug 22, 2007
does anybody have this lense,i only ask because i have this on order which i collect tomorrow.
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TV Talk: Entourage
"Hollywood and hangin' with the guys. That's Entourage in a nutshell. Vince Chase has brought his friends along for the fun, and we get to hitch a ride with 'em. Let's jump into season four."
First Episode
Surprises in the first episode, but good ones [Read More]
They're Back!!!
Yeah, I know, they were only gone for two weeks, but really, the entire lackluster run of Season Three "Part 2″ was missing something. THIS is what the show is about, the behind the scenes life of a moviemaking bunch of buddies. This is what was missing last season when everyone was just sort of bumming around, occasionally making some comment that reminded you that all their cash came from Hollywood and the entertainment industry. [Read More]
Warming up for Season 4
Lets recap Season 3 while we get warmed up for Season 4! [Read More]


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I have recently read two outstanding bios of Lennon and McCartney. The Lennon bio was written by Tim Riley and the McCartney one by Howard Sounes. Both are huge, weighing in at over 600 pages apiece, hardcover.
I can honestly say that after reading these books, and combining the material with everything else I'd already read about the two, in Beatles books and elsewhere, I feel like I have put together a pretty clear picture of the men behind the music. Now I shall proceed to rattle forth some of my own personal observations and hopefully elicit some of the same from others.


text:
This job is no longer available
Further information
Our client is part of a large international group. It manufactures a range of electrical products that satisfy customer need for quality and innovation in a range of applications across the spectrum of industry sector.
The site in question can claim to be a centre of manufacturing excellence but this appointment, created by internal promotion, still presents an exciting opportunity to make further improvements to performance.
The Role:
Manage site resources (plant and staff) in a manner that secures the achievement of planned production output objectives.
Critically appraise existing practices in all areas of site activity (production, quality, logistics, process engineering, and maintenance) and make changes where necessary.
Review internal systems and processes such that communication of the need to achieve KPIs is clearly understood by all.
Manage, motivate and lead in a way that creates a collaborative workplace culture.
The Candidate:
Graduate calibre, ideally oriented towards electrical engineering; able to demonstrate a successful track record running a similar size (c.100 employees) manufacturing facility.
Experience within fast moving manufacturing environment is essential.
First class verbal and written skills are taken as read. Likewise, a high degree of numeracy and the ability to take decisions rather than prevaricate.
A natural leader who sets an example and inspires confidence by creating a vision for the team.


text:
Crevice Tools
The contemporary vacuum cleaners are designed keeping in mind the various unique cleaning needs. Do you know you can remove the fabric softener residue from the lint filter of your washing/dryer machine? All that you need is a vacuum cleaner with a crevice tool.
How to remove lint from washing machine using vacuum cleaner?
The first and foremost step is to turn off your dryer and unplug it from the outlet. Remove the lint filter and throw away the lint.
While the lint filter is soaking in warm, soapy water, clean the lint trap using your vacuum cleaner's crevice tool. The crevice tool will loosen any fabric softener residue.
You can then blow dry the lint trap using the vacuum cleaner before fixing the lint cloth back into the lint trap. This will vacuum away any lint inside the lint trap and also unblock the lint compartment's moist air intake vent screens.
You will find a host of crevice tools in GoVacuum.com. GoVacuum.com is a one stop for all your cleaning solutions. We deal with only the best and top branded vacuum cleaners and their accessories. Some of the brands that are available with us include Eureka, Hoover, Bosch, Kenmore, Koblenz and many more.
Genuine Kirby Crevice Tool.$15.95Crevice / Radiator Tool fits 1CB models. Learn More
Kenmore 52631 Canister Vacuum Crevice Tool$11.49Fits all Kenmore and Panasonic canister vacuum cleaners. Sears Part # 02052631000, Panasonic Part # AC60RAKZZV06. Crevice tools are perfect for those hard to reach places, along the baseboards, seat cushions, and the riser on stairs. Learn More
Kirby G4 Crevice Tool. Kirby Part # 225993S$12.95Genuine Kirby G4 crevice tool.Kirby Part # 225993S Learn More
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Kirby Generation 3 Crevice Tool Assembly. Kirby Part # 225989S$12.95Genuine Kirby Generation 3 Crevice Tool.Kirby Part # 225989S Learn More
Kirby Gsix Crevice Tool. Kirby Part # 225799S$11.66Genuine Kirby Gsix Vacuum Cleaner Crevice Tool.Kirby Part # 225799S Learn More
Kirby Sentria Crevice Tool 225706$14.99Kirby Sentria Crevice Tool. Part Number 225706 Learn More
Kirby Generation 3 Crevice Tool Generation 3 Crevice Tool$21.18Works With: Kirby Generation 3 Kirby G3 Kirby Generation 4 Kirby G4 Kirby Generation 5 Kirby G5 Kirby Generation 6 Kirby G6 Kirby Ultimate Edition Kirby Ultimate Diamond Edition Kirby Sentria Description:Genuine Kirby Part Learn More
Kirby Vacuum Crevice Tool with Brush$14.22Kirby Vacuum Crevice Tool with Brush Learn More
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