Method of communicating with a built-in sensor, in particular a rotational speed sensor
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United States of America Patent
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Jul 8, 2003
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N/A
app pub date -
Nov 20, 2000
filing date -
Nov 19, 1999
priority date (Note) -
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Abstract
The method allows communication with a built-in sensor, in particular a rotational speed sensor, which supplies successive signal pulses as output signal. The sensor is preferably built into a motor vehicle in such a way that it can be supplied with a supply voltage externally via a voltage supply line. The sensor is placed into a detection mode. The supply voltage on the voltage supply line is externally modulated. The modulated supply voltage received in the sensor is analyzed with regard to the fulfillment of a predetermined criterion stored in the rotational speed sensor. And, finally, the received modulated supply voltage is interpreted as an external communication signal if the criterion is fulfilled.
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