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Sense and hold circuit for hose assembly

  • US 9,535,024 B2
  • Filed: 09/13/2013
  • Issued: 01/03/2017
  • Est. Priority Date: 09/14/2012
  • Status: Active Grant
First Claim
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1. A monitoring circuit configured to detect degradation of a hose assembly, the circuit comprising:

  • a voltage source connected to a first connection location of a hose assembly, the hose assembly including a hose having a first conductive layer and a second conductive layer, the first connection location electrically connected to the first conductive layer, wherein the second connection location is electrically connected to ground;

    a capacitor electrically connected to the hose assembly via a differential voltage detection circuit, wherein a difference between a voltage at the voltage source and a voltage across the hose is captured by the capacitor;

    a voltage sampling circuit configured to periodically detect a voltage at the capacitor, wherein, upon detecting a change in the voltage above a predetermined threshold, the voltage sampling circuit is configured to generate an alarm indicative of potential failure of the hose assembly.

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