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Tire pressure monitoring system makers cut consumption, extend service life

New models adopt ICs and can function for up to 10 years.

TOP TRENDS

  • Fewer components, lower consumption: China makers of tire pressure monitoring systems are adopting ICs that integrate the sensor, microcontroller, LF receiver and RF transmitter. This approach helps reduce the number of external components from 20 to 10. Further, it lowers power consumption but extends the product’s service life.
  • Upgraded inputs: Instead of importing from Taiwan, more suppliers are producing components such as the thermal cut-off switches and antennas in-house. The sensor is typically sourced from overseas companies such as Infineon, GE and Motorola. Upscale models have Israel-made lithium batteries.
  • Improved efficiency: The latest sensors have a standby current of 0.4 to 0.7μA. Companies use rolling switches to detect if the wheel is in motion, enhancing the system’s programming reducing energy utilized. New models feature a service life of 5 years, up from 3 years of older units. High-end designs can last 10 years.
  • Typical inclusions: China-made systems are normally packaged with four to 38 transmitters, one receiver and a 2 to 3in LCD screen. The last item may be single- or multicolor and can be installed on the car’s dashboard or rearview mirror. Some TPMS can draw power from the cigarette lighter slot. The working frequency is 315, 433 or 434MHz.

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Note: This article "Tire pressure monitoring system makers cut consumption, extend service life" was originally published by Global Sources, a leading business-to-business media company and a primary facilitator of trade with China manufacturers and India suppliers, providing essential sourcing information to volume buyers through e-magazines and trade shows.

All price quotes in this report are in US dollars unless otherwise specified. FOB prices were provided by the companies interviewed only as reference prices at the time of interview and may have changed.

Disclaimer: All product images are provided by the companies interviewed and are for reference purposes only. Those product images featuring products with trademarks, brand names or logos are not intended for sale. We, our affiliates, and our affiliates' respective directors, officers, employees, representatives, agents or contractors, do not accept and will not have any responsibility or liability for product images (or any part thereof) which infringe on any intellectual property or other rights of a third party.

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