传感器种类很多，应用千差万别，有温度、光、磁、压力、加速度、角速度、变位、温度、气体等各方面的应用，本身也有金属、半导体、高分子、复合材料等各种传感器。据日本电子工业振兴协会的调查预测，２１世纪初的市场规模可达５０００亿日元，是电子元件中发展最快的部门之 There are many types of sensors, applications vary widely, with the temperature, light, magnetism, pressure, acceleration, angular velocity, displacement, temperature, gas and other aspects of the application, itself has a variety of sensors such as metals, semiconductors, polymers, composites. According to the survey conducted by the Japan Electronics Industry Association, the size of the market in the early 21st century can reach 500 billion yen, making it the fastest-growing sector in electronic components