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Virtual wireless transmitter

  • US 7,440,735 B2
  • Filed: 10/23/2002
  • Issued: 10/21/2008
  • Est. Priority Date: 10/23/2002
  • Status: Expired due to Term
First Claim
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1. A method of monitoring a distributed system having a plurality of deployed field devices and at least one computer at a control room, each field device containing a transducer and a wireless transceiver, the method comprising:

  • sensing information with the deployed field devices to produce ungroomed digital transducer data;

    wirelessly transmitting the ungroomed digital transducer data from each field device to a base station;

    receiving the transmitted information ungroomed digital transducer data from each field device at the base station;

    storing the received information ungroomed digital transducer data in a database on a computer network;

    storing in the database, for each field device, secondary information needed to groom raw data from that field device;

    running a virtual transmitter application program on a server connected to the computer network, the server being remote from the field devices;

    receiving at the server a request by a computer at the control room for a measurement value from a selected field device;

    retrieving to the server from the database stored ungroomed digital transducer data generated by the selected field device and the stored secondary information for the selected field device;

    programmatically grooming at the server the stored ungroomed digital transducer data with the virtual transmitter application using the stored secondary information to derive the measurement value; and

    transmitting over the network the measurement value from the server to the computer at the control room that requested the measurement value.

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