阻性传感器现状研究及发展趋势

Research status and progress of resistance sensors

传感器技术是现代科技的前沿技术,与通信技术和计算机技术处于同等重要的位置,并称为信息技术的三大支柱。传感器作为获取信息的关键器件被应用于各种物理量的测量,其中阻性传感器应用最为广泛,但由于其使用的半导体材料本征属性,存在着一致性、温度漂移及非线性等问题,使用时需要对其进行非线性校准和温度补偿。目前采用的硬件补偿方法和软件补偿方法存在许多不足,随着传感器技术的不断发展,现代传感器信号调理技术也应运而生,弥补了传统补偿方法的不足,大大提高了补偿的精度和通用性,并减小了体积和功耗。传感器调理技术发展趋势必将向智能化、微型化、微功耗和多功能化方向发展。

As one of the three IT bases, sensor technology has been widely utilization in all fields. But the intrinsic error of nonlinearity output and temperature drift for resistance sensor has a strong impact to the entire system accuracy and seriously. So, the system must have temperature compensation and linear calibration. There are many deficiencies in hardware and software compensation method of resistance sensor. With the continuous development of sensor technology, new conditioning methods are constantly emerging. They greatly improve the system accuracy and versatility, to further reduce system power consumption and volume. Sensor conditioning technology will develop to intelligent, miniaturization and multifunction.