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Pneumatic diagnostic method and system for detecting leakage in a pneumatic system

  • US 10,267,706 B2
  • Filed: 06/29/2016
  • Issued: 04/23/2019
  • Est. Priority Date: 06/30/2015
  • Status: Active Grant
First Claim
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1. A method of testing a pneumatic component on a patient support for leakage, said method comprising:

  • providing the patient support with a control system;

    providing the control system with a sensor;

    the control system of the patient support pressurizing the pneumatic component to a first pressure;

    sensing when the pneumatic component has reached the first pressure with the sensor;

    after reaching the first pressure, the control system ceasing the pressurizing for a settling-in time period greater than zero;

    after the settling-in time period has ended, the control system measuring a settled-in pressure of the pneumatic component with the sensor;

    the control system measuring a decay time period starting at the end of the settling-in time period;

    the control system sensing and measuring a decayed pressure with the sensor at the end of the decay time period, which represents a pressure after decay of the settled-in pressure of the pneumatic component;

    the control system determining a determined rate of decay of pressure from the settled-in pressure to the decayed pressure in the pneumatic component over the decay time period;

    the control system comparing the determined rate of decay to an acceptable stored decay rate to determine whether there is a leak in the pneumatic component; and

    the control system generating a signal when the determined rate of decay is greater than the acceptable stored decay rate indicating a leak in the pneumatic component.

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