Arrangement for the wireless transmission of measuring signals
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United States of America Patent
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-
Jun 7, 1988
Grant Date -
N/A
app pub date -
Feb 3, 1986
filing date -
Feb 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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