Tire pressure sensing systems

Details Tire pressure sensing systems Tire pressure sensing systems

1984-03-14

1985-05-21

Woodiel, Donald O.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

73705, 250231P, B60C 2302, G01L 706

Patent

active

045178348

ABSTRACT:
A tire pressure sensing system has a sensor mounted on the tire hub, the sensor having a mask that is moved on change in tire pressure. Two rows of fibres at the end of a fibre-optic cable are positioned on opposite sides of a slit in the mask. The fibres of the two rows extend along a central core and an outer ring respectively of the cable. The rear end of the cable is mounted coaxially of the tire in alignment with a stationary cable having an inner core and an outer ring which extend to a radiation source and to a detector respectively. The source supplies radiation, via the cable, to the outer ring of the cable and hence to the row of fibres. Change in pressure moves the mask, thereby changing the amount of radiation received by the other row of fibres which passes to the outer ring of the stationary cable and thereby to the detector. The detector monitors the radiation and provides an output indicative of tire pressure.

REFERENCES:
patent: 4004270 (1977-01-01), Claxton et al.
patent: 4004272 (1977-01-01), Claxton et al.
patent: 4071753 (1978-01-01), Fulenwider et al.
patent: 4086564 (1978-03-01), Claxton et al.
patent: 4180794 (1979-12-01), Claxton et al.

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