Melexis, a Belgian automotive IC fabless specialist, has unveiled a smart tyre sensor or TPMS so that the Original Equipment Manufacturers could integrate tyre pressure monitoring systems which will be made mandatory in commercial vehicles in the near future.
About the Melexis TPMS:
The MLX91805 TMS integrates an 800g XZ-axis accelerometer that senses up to 10,000 samples per second. It also integrates a high-accuracy pressure sensor as well as temperature and voltage sensors. Unlike current rim-mounted TPMS sensors, their TPMS will be embedded in the rims.
The Melexis TPMS -MLX91805 is constructed to be an optimal fitment in tyres of vehicles like a heavy duty truck or passenger car. With new EU regulations on tyre-pressure monitoring for heavy duty commercial vehicles intended to come into force in 2022-2024, its multiple sensors help ensure compliance and provide extra information, such as loading, that can extend tire life and boost fuel economy and safety.
“The interface between the tyre and the road has a huge influence on vehicle behaviour. This is exactly where our new sensor is designed to be, capturing information directly from the road,” said Ivan Zagan, Product Manager Tyre Monitoring Sensors at Melexis.
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“This world's first device lets tyre manufacturers create the next generation of smart tires to deliver extra value for owners and operators, enable new services to maximize fuel efficiency and safety, and contribute to the development of self-driving vehicles.” He added.
With the integration of a low-power 16-bit microcontroller and 315/433 MHz RF transmitter that draws just 5mA at 5dBm output power, and with an extremely low 90nA sleep current, the MLX91805 can run from a tiny battery for the entire life of a tyre. In addition to built-in diagnostics and fault detection, a math coprocessor allows fast and energy-efficient Digital Signal Processing (DSP). Further assisting the development of smart tires, the MLX91805 comes with Melexis’ Library to help application-level software capturing and interpreting the key information like accelerometer signals of the tyre footprint area.
The MLX91805 is available in a 5mm x 4mm DFN14 package.
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