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An Inductively Coupled Method for Remote Tire Pressure Sensing
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English
Abstract
This paper describes a method for measuring and transmitting tire pressure and temperature using solid state temperature and pressure sensors embedded in each tire. Data is transmitted with closely coupled field antennas, one mounted to the wheel rim and the other rigidly mounted in the comer assembly. The sensors are remotely powered by resonating the antenna in the comer assembly at a low frequency. Digitized sensor data is transmitted back to the antenna in the corner assembly.
This approach is advantageous for several reasons. The use of low frequency field antennas eliminates the crosstalk with other tires, systems, or vehicles. The vehicle battery powers the system rather than a battery located in the wheel. The system is capable of providing continuous measurement with a high update rate. Finally, the system electronics can be reduced to custom integrated circuits, resulting in components which are small, light weight, and cost competitive.
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Citation
Mortensen, R., Ridge, L., Hilgart, R., Monson, M. et al., "An Inductively Coupled Method for Remote Tire Pressure Sensing," SAE Technical Paper 971103, 1997, https://doi.org/10.4271/971103.Also In
References
- “Run-Flat Tires will Jack Up Tire-Pressure Monitor Sales” The Hansen Report on Automotive Electronics 7 5 June 1994 1 6
- “Sumitomo develops deflation warning system” Tire Business July 1991 16
- Nishimura Hiroaki Katsumata Masaaki “Development of Digital Tire Pressure Display Device” SAE paper 851237 1985
- Gay Patrice Bugnot Denis “Real Time Tire Pressure Electronic Monitoring System with Dashboard Possibilities” SAE paper 890106 241 250