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Vehicle monitoring system with multiple inputs for a tractor-trailer

  • US 9,415,759 B2
  • Filed: 12/10/2014
  • Issued: 08/16/2016
  • Est. Priority Date: 11/26/2008
  • Status: Active Grant
First Claim
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1. A vehicle monitoring system comprising:

  • a service/control pressure line;

    an emergency/supply pressure line;

    a brake valve coupled to a brake actuator and operating the brake actuator, said brake valve coupled to the service/control pressure line and the emergency/supply pressure line, the service/control pressure line and the emergency/supply pressure line each being configured to provide pressurized air to the brake valve;

    a brake monitoring device having a processor and coupled to the service/control pressure line and the emergency/supply pressure line, the monitoring device monitoring the pressure of both the service/control pressure line and the emergency/supply pressure line;

    said processor comparing the measured pressure of said service/control pressure line and said emergency/supply pressure line to a pressure set point; and

    said brake monitoring device generating a warning indication based on at least one of the following parameters selected from the group consisting of;

    the measured pressure exceeds a first threshold level or the measured pressure fails to exceed a second threshold level or combinations thereof.

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