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摘 要随着电子技术的发展，汽车电子化程度不断提高，通常的机械系统已经难以解决某些与汽车功能要求有关的问题，而被电子控制系统代替。传感器的作用就是根据规定的被测量的大小，定量提供有用的电输出信号的部件，亦即传感器把光、时间、电、温度、压力及气体等的物理、化学量转换成信号的变换器。传感器作为汽车电控系统的关键部件，它直接影响汽车的技术性能的发挥。目前，普通汽车上大约装有10-20只传感器，高级豪华轿车则更多，这些传感器主要分布在发动机控制系统、底盘控制系统和车身控制系统中。关键词 传感器，信号，转换，控制ABSTRACT With the development of electronic technology, automotive electronics increased degree of the normal mechanical systems have been difficult to resolve some of the functional requirements of the auto-related issues, and the electronic control system was replaced. Sensor is the role of measurement in accordance with the provisions of the size, provide a useful, quantitative output signal components, That is, the optical sensor, time, electricity, temperature, pressure and gas, such as physical, chemical conversion of the signal converter. Sensor as a motor control system, the key components, which directly affects the vehicles technical performances of the play. At present, about ordinary car with only 10-20 sensors, luxury cars are more advanced, these sensors are mainly located in the engine control systems, chassis control systems and body con