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Communication system

  • US 5,353,009 A
  • Filed: 07/07/1993
  • Issued: 10/04/1994
  • Est. Priority Date: 01/04/1991
  • Status: Expired due to Fees
First Claim
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1. A communication system comprising a control station and a plurality of modular remote stations connected to the control station by a multi-conductor harness, the control station supplying the remote stations with electrical power and communicating bidirectionally with the remote stations via the harness and further being adapted to allocate address codes selectively to the remote stations and to store composite identification codes identifying both a location of each remote station and a function of sensors installed at each remote station;

  • each remote station comprising;

    a functional module, selected from a plurality of different types of functional modules, the functional module including a sensor and a memory element which stores a sensor code indicating the function of the sensor;

    communication means comprising communication circuitry for receiving data from and sending data to the control station; and

    an interface module arranged to function with any of said plurality of different types of functional module and removably connected by plug-in connector means to said functional module, the interface module supplying electrical power to the functional module, transferring data from the functional module to the communication means, and including identification means for retrieving the sensor code from said memory element of the functional module and for generating a composite identification code derived from the sensor code and from an address code allocated to the remote station by the control station and transmitted to the remote station via the harness, and data storage means for storing the composite identification code, so that each remote station is effectively identified both by a remotely allocated address code and a sensor code indicating the function of the sensor of the functional module installed at that remote station.

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