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Fluid flow resistance monitoring system

  • US 6,158,965 A
  • Filed: 07/30/1996
  • Issued: 12/12/2000
  • Est. Priority Date: 07/30/1996
  • Status: Expired due to Term
First Claim
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1. A system for monitoring a flow parameter in a fluid delivery system in which a flow control device acts on a fluid conduit to control the flow of fluid through the conduit, the system comprising:

  • a pressure sensor coupled to the conduit for providing pressure signals in response to the pressure sensed in the conduit; and

    a processor configured to output a pseudorandom code having a codelength, control the flow control device to cause flow in a pattern of flow variation in accordance with the pseudorandom code having a codelength, receive the pressure signals and determine average pressure values for at least some of the pressure signals, decode the average pressure values in accordance with the pseudorandom code, and process the decoded average pressure values to determine a flow parameter.

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