传感器是一种能够以定性或定量方式检测物理或化学参数的组件。量化变量的检测是压力、温度、流量、湿度、亮度和许多其他因素的测量设备和变送器的基础。根据要测量的现象，使用非常不同类型的传感器，例如压力传感器或温度传感器。传感器也称为检测器、传感元件或探针。

　　原文：

　　A sensor is a component that can detect physical or chemical parameters in a qualitative or quantitative manner. Detection of quantified variables is the basis of measuring devices and transmitters for pressure, temperature, flow, humidity, brightness, and many other factors. Depending on the phenomenon to be measured, very different types of sensors are employed as, for example, pressure sensors or temperature sensors. Sensors are also referred to as detectors, sensing elements, or probes.