Ultra low-power monolithically integrated capacitive pressure sensor for tire pressure monitoring

被引：23

作者：

Kolle, C ^{[1
]}

Scherr, W ^{[1
]}

Hammerschmidt, D ^{[1
]}

Pichler, G ^{[1
]}

Motz, M ^{[1
]}

Schaffer, B ^{[1
]}

Forster, B ^{[1
]}

Ausserlechner, U ^{[1
]}

机构：

[1] Infineon Technol Austria AG, Villach, Austria

来源：

PROCEEDINGS OF THE IEEE SENSORS 2004, VOLS 1-3 | 2004年

关键词：

pressure sensor; low-power; tire pressure monitoring;

D O I：

10.1109/ICSENS.2004.1426147

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tire pressure monitoring systems (TPMS) are gaining importance due to improved security standards in automotive industry. In active systems, the power consumption of the system is of utmost importance for a required lifetime of more than 10 years. The presented integrated circuit comprises high resolution pressure, temperature and voltage monitoring, low-power oscillators, a specialized DSP with RAM/ROM and an EEPROM to store calibration data. The continuously running low-power oscillator for internal wake-up timing is operated with 30 nA. Due to the extremely low-power consumption of all circuit blocks pressure measurements can be carried out in. short intervals (0.5 s). This enables the implementation of a new intelligent dynamic wake-up algorithm to optimize the power-intensive HF-transmission intervals at different driving situations. Thus additional rotation detectors are not needed anymore. The charge consumption without HF-transmission results into 48 mAh in 10 years.

引用

页码：244 / 247

页数：4