MEMS and Sensors

Smart tire sensor embedded into a wheel for pressure monitoring

25 November 2020
The MLXPR208 sensor integrates a low-power 16-bit microcontroller and RF transmitter as well as an accelerometer. Source: Melexis

Belgium-based Melexis has introduced a new smart tire sensor that is embedded in the wheel to monitor for pressure.

The MLX91805 sensor is being launched ahead of new regulations requiring mandatory tire pressure monitoring on commercial vehicles. Unlike rim-mounted tire pressure measurement (TPMS) sensors, the embedded sensor integrates an 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.

Melexis said the sensor is suited for commercial vehicles including heavy duty and passenger cars. The regulations, particularly in Europe, are expected to take effect in 2022 to 2024. Sensors help ensure compliance and provide extra information such as loading that can boost the life and fuel efficiency of tires, the company said.

The sensor allows automotive OEMs to develop smart tires to maximize fuel efficiency and safety as well as for the development of self-driving cars, the company said.

The sensor integrates a low-power 16 bit microcontroller and RF transmitter that can run on a tiny battery for the life of the tire. Other sensor features include built-in diagnostics and fault detection, a math coprocessor and a digital signal processor.

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