TRW Automotive says it has launched its first integrated Remote Keyless Entry (RKE) and Direct Tyre Pressure Monitoring system (TPMS) with a major, unnamed Japanese vehicle manufacturer, maintaining the system delivers RKE and TPM functions with fewer parts.
“Integrating RKE and TPMS can offer enhanced value and performance,” says TRW Global Electronics Engineering vice president, Ken Kaiser.
“By eliminating the need for separate receivers for the two systems we can maintain performance characteristics, use less space, reduce system weight and wiring complexity and ultimately lower material and assembly costs.”
TRW also says its system reduces risks associated with radio frequency (RF) interference by using multiple frequencies.
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In-vehicle wireless communication systems have grown in the last few years, particularly since the US Federal mandate of tyre pressure monitoring systems in 2007.
The supplier notes with such wireless communication growth comes an increase in risk of RF interference, but insists the use of multiple frequencies in its system ensures RKE functionality in the event one of the frequencies is unavailable.
According to TRW there is no discernible change to the RKE key fob layout or performance – the transmitted commands are received by a single smart receiver/ECU that processes information from the RKE fobs – and also the temperature and pressure signals sent from the transmitters located in the TPMS sensor units in each individual tyre.
The integrated ECU decodes the signals to activate the lock/unlock function for vehicle doors and the boot, as well as provides tyre pressure warning information to the driver in the same way as conventional RKE and TPMS receivers.
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