Telemetry unit

Details Telemetry unit Telemetry unit

2003-10-01

2010-06-08

Wong, Albert K (Department: 2612)

Communications: electrical

Continuously variable indicating

Combined

C340S442000, C340S447000, C073S146300, C073S146400

Reexamination Certificate

active

07733241

ABSTRACT:
A telemetry unit (100) is provided for mounting to the inside of a pneumatic tire, which includes sensors for measuring the pressure and temperature within the tire and an RF transmitter for transmitting measured data to an on-board display remote location. The unit (100) includes a piezoelectric element (114) supported in a housing (112) with an actuator (136) arranged for contact with the element (114), to deflect the element (114) in response to external forces acting on the actuator (136) during rotation of the tire. For every rotation of the tire, cyclic pulses of electrical charge are generated by the deflection of the element (114). The unit (100) includes control means which controls the consumption of stored charge when measuring and transmitting data and is arranged to vary the rate of transmission of data from the unit (100) in dependence on the rotary speed of the tire.

REFERENCES:
patent: 7511404 (2009-03-01), Lee
patent: 7518493 (2009-04-01), Bryzek et al.
patent: 1 013 483 (2000-06-01), None
The International Search Report for PCT Application No. PCT/GB2003/004319.

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