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

US6794993B1 · kind B1 · utility

Inventors

• Ralf Kessler · Heidelberg, DE
• Andreas Kuhnle · Maulbronn, DE
• Roland Michal · Pforzheim, DE
• Norbert Normann · Mühlacker, DE
• Lothar Schulze · Dresden, DE

Key dates

• Filing date: Jul 26, 2001
• Grant date: Sep 21, 2004
• Expiry date: Jul 26, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60C23/0433
• WIPO field: Transport
• WIPO sector: Mechanical engineering

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.