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Device for measuring brake temperatures and tire pressure on sets of wheels of vehicles and in particular aircraft

  • US 4,758,969 A
  • Filed: 02/10/1986
  • Issued: 07/19/1988
  • Est. Priority Date: 02/21/1985
  • Status: Expired due to Term
First Claim
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1. A device for measuring brake temperatures and tire pressures on at least one set of wheels of a vehicle, said vehicle comprising a base structure, the set of wheels comprising a wheel mounting part on which the wheels are mounted for rotation, and a pneumatic tire being mounted on each wheel, said device comprising:

  • a BTMS (Brake Temperature Measuring System) central computer,a group or bus of conductors extending between and interconnecting the BTMS central computer and the set of wheels,temperature sensors connected to said group of conductors and mounted on the wheel mounting part of the set of wheels,pressure sensors respectively connected to the pneumatic tires of the wheels for measuring the pressures of the pneumatic tires of the set of wheels, and electronic means respectively connected to the pressure sensors for converting pressure data received from the sensors into corresponding frequency coded pressure signals,a coupling element, mounted between each wheel of the set of wheels and said wheel mounting part, which permits electrical signals of predetermined frequencies to pass therethrough,a TPIS (Tire Pressure Indicating System) supply source, mounted on said base structure of the vehicle, for supplying an electric power signal at a frequency which enables the passage of the electric power signal through the coupling element of each wheel to said electronic means connected to the pressure sensor,a TPIS computer mounted on the base structure of the vehicle and responsive to the frequency coded pressure signals coming from said electronic means and passing through the coupling elements,said coupling elements of the wheels of the set of wheels, said TPIS computer and the TPIS supply source being interconnected by said group of conductors,electronic means respectively connected to the temperature sensors for converting temperature data from the temperature sensor into frequency coded temperature signals, andmultiplexing means connected to the group of conductors for sending to the BTMS central computer solely the frequency coded temperature signals and to the TPIS central computer solely the frequency coded pressure signals.

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