Arrangement for transmitting signals from a device monitoring tire pressure on the wheels of a motor vehicle to an evaluation device arranged in a motor vehicle
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United States of America Patent
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-
Sep 21, 2004
Grant Date -
N/A
app pub date -
Jul 26, 2001
filing date -
Dec 10, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An arrangement for transmitting signals from a device (3) for monitoring the tire pressure in vehicle wheels (1), being arranged in the tire preferably as one module together with a valve, and comprising a pressure sensor arranged for measuring the tire pressure and generating an electric pressure signal, a control circuit, a battery as power source, and a transmitter with a sending antenna for transmitting the measured pressure signal as a radio-frequency (RF) signal under the control of the control circuit to a central evaluation and control unit (8), which is arranged in the vehicle (2) and which is connected to receiving antennas (4), to which individual wheels (1) or groups of wheels (1) of the vehicle (2) are allocated, via a RF receiver which comprises a demodulator and transforms the received RF signals to low-frequency (LF) signals. At each receiving antenna (4), there is arranged a single-channel RF receiver (5) with demodulator (6) so that the electric lines (7) send out LF signals instead of RF signals.
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