Arrangement for the wireless transmission of measuring signals

Details Arrangement for the wireless transmission of measuring signals Arrangement for the wireless transmission of measuring signals

1986-02-03

1988-06-07

Caldwell, Sr., John W.

Communications: electrical

Continuously variable indicating

With particular transmitter

340 58, 731465, G08C 1906

Patent

active

047499931

ABSTRACT:
An arrangement provides for the wireless transmission of a measuring signal from a sensor to an evaluating unit by a pair of first electrical coils that are temporarily inductively coupled with one another. The sensor is supplied with energy by a second pair of electrical coils that are also temporarily inductively coupled with one another. The sensor includes a power supply circuit means for receiving a low-frequency energy signal from the second pair of electrical coils and supplies an energy signal to a transmitting oscillator means. The transmitting oscillator means responds to at least one measured physical quantity and provides a medium-frequency measurement signal to be transmitted over the first pair of electrical coils. When used in a tire pressure control system, this arrangement provides for a reliable transmission of signals over a relatively large transmission path without strict mounting tolerances, while complying with governmental regulations.

REFERENCES:
patent: 4067235 (1978-01-01), Markland et al.
patent: 4071724 (1978-01-01), Lejeune
patent: 4131878 (1978-12-01), Yasuo
patent: 4300118 (1981-11-01), Matsuda et al.
patent: 4319220 (1982-03-01), Pappas et al.
patent: 4443785 (1984-04-01), Speranza
patent: 4450431 (1984-05-01), Hochstein
patent: 4467641 (1984-08-01), Abraham

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