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Commercial
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 Commercial Early Warning Systems Protect Properties of All Sizes Introduction to Wireless Systems The term Wireless is used to define the signal transmission method for industrial fire and early warning systems. The basic operation of the industrial wireless system can be compared to an addressable multiplex wired system - with the exception that the wireless system has no wiring between components and incorporates redundant class "A" RF signaling as a standard feature. The wireless early warning system is comprised of three components consisting of initiating devices with RF transmitters, RF transponders known as repeaters, and control panels. Optional components consist of display/printers, RS 232 computer interface, remote annunciator, and relay receivers. All World Electronics, Inc. components are microprocessor based. RF Signals World Electronics, Inc. systems operate within the 290-305 MHz band referred to as "the forbidden band" by the FCC - as no commercial radio signals are allowed in this frequency range. RF signals consist of words comprised of binary coded audio tones. Groups of multiple words are transmitted on multiple frequencies to provide assurance of reception in varying physical and noisy environments. Transmitters Wireless transmitting devices include photoelectric smoke detectors, pull stations, heat detectors, and maintenance transmitters for connection to any device with contacts, plus a host of security devices. All transmitters are surface mount technology and microprocessor based to provide special and selectable performance parameters. All devices are supervised for power source, device removal, and transmission reliability. All protection devices transmit initial alarm signals identifying the nature of the emergency, initiating device type and exact device location. Continued alarm status results in repeated transmissions every 30 seconds until the device is self-restored or manually restored to normal. The control panel separately displays initial and repeat alarm status for all devices in alarm. Up to 45 separate alarms may be displayed and recalled in the exact order received. Repeaters The World Electronics, Inc. repeater carries twenty patents relating to signaling processing technology. Repeaters form the cellular reception network throughout the protected premises. They also provide relay outputs to perform control functions such as elevator capture, horn strobes, door closure, HVAC, turn equipment on/off, coded alarms, etc. Repeaters require 120 VAC power and a transformer. The unit is supervised for primary power loss, low battery, device removal, transmission strength and reliability, unwanted transmissions, and relay wiring integrity. Control Panel The panel design and unique performance features are a direct result of input from various fire marshals during the prototype and R & D stage. The panel provides unique addressable annunciation for all protection devises including initial and repeat alarm indications. The World Electronics, Inc. control panel incorporates a customized silk-screened face panel designed individually for each client. It is the only panel on the market with this display feature. Face panels include descriptions for each device, site or building plans, or a combination of each. Wireless Advantages Wireless systems offer numerous advantages for all types of occupancies and facilities. These advantages are principally due to the elimination of wire runs and trenching, disruption during installation, core boring, and refurbishing costs. The installation time is generally a fraction of the time for conventional systems. Wireless systems also afford a combination of multiple emergencies on a single system with a redundant class "A" signaling path. The elimination of wiring affords clients a cost effective alternative to obtain protection, which otherwise, might not be available due to economic, aesthetic, or environmental constraints. Examples include buildings with asbestos and protection during asbestos abatement, multiple building facilities with antiquated underground wired systems, the inability to monitor multiple building systems at one location of the property, historic structures, add a guard tour system, add additional protection to a wired system which has reached it's power limitation, and the list continues. In summary, the uses for commercial wireless early warning systems are limited only by your imagination! Early Warning System Features and Benefits
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Commercial Early Warning Systems
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Copyright © 1998, 1999, 2001 World Electronics, Inc., All rights reserved. |
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