3BSE014227R1 ABB RF533 子架

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　　传感器也称为检测器，是一种 转换器，可测量物理量并将其转换为可由观察者或电子仪器读取的信号。为了准确，大多数传感器都根据已知标准进行校准。

　　传感器是一种在触摸时接收并响应信号的设备。传感器的灵敏度表示当测量量发生变化时传感器的输出变化量。测量非常小的变化的传感器必须具有非常高的灵敏度。传感器需要设计成对测量的影响很小；使传感器更小通常可以改善这一点，并可能带来其他优势。技术进步使得越来越多的传感器可以在微观尺度上制造为使用 MEMS 技术的微型传感器。在大多数情况下，与宏观方法相比，微型传感器的速度和灵敏度要高得多。

　　古老的传感器设备

　　最常见的是 温度传感器，它从某个来源收集有关温度的信息，并将其转换为其他设备或人可以理解的形式。温度传感器的例证是玻璃温度计中的。玻璃中的会随着温度的变化而膨胀和收缩。外部温度是温度测量的源元素。观察者观察的位置以测量温度。

　　IR 传感器 发射和/或检测红外辐射以感测环境中的特定相位。一般来说，红外光谱中的所有物体都会发出热辐射。红外传感器检测这种人眼不可见的辐射。

　　紫外线传感器 测量紫外线辐射的强度或功率。这种形式的电磁辐射的波长比 X 射线长，但仍比可见辐射短。一种被称为多晶金刚石的活性材料正被用于可靠的紫外线传感。紫外线传感器可以发现环境对紫外线辐射的暴露。

　　触摸传感器 ，根据触摸的位置充当可变电阻器。通常，软件与触摸传感器连接。在这种情况下，软件正在提供内存。当传感器停用时，他们可以记住“触摸的位置”。一旦传感器被激活，他们就可以记住“次触摸的位置”并理解与之相关的所有值。

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　　A sensor also known as detector is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by anelectronic instrument. For accuracy, most sensors are calibrated against known standards.

　　A sensor is a device which receives and responds to a signal when touched. A sensor's sensitivity indicates how much the sensor's output changes when the measured quantity changes. Sensors that measure very small changes must have very high sensitivities. Sensors need to be designed to have a small effect on what is measured; making the sensor smaller often improves this and may introduce other advantages. Technological progress allows more and more sensors to be manufactured on a microscopic scale as micro-sensors using MEMS technology. In most cases, a micro-sensor reaches a significantly higher speed and sensitivity compared with macroscopic approaches.

　　Age Old Sensor Devices

　　The most common are the Temperature Sensorswhich collects information about temperature from a source and converts into a form that is understandable by other device or person. The best illustration of a temperature sensor is mercury in glass thermometer. The mercury in the glass expands and contracts depending on the alterations in temperature. The outside temperature is the source element for the temperature measurement. The position of the mercury is observed by the viewer to measure the temperature.

　　IR Sensor which emits and/or detects infrared radiation to sense a particular phase in the environment. Generally, thermal radiation is emitted by all the objects in the infrared spectrum. The infrared sensor detects this type of radiation which is not visible to human eye.

　　UV sensors measure the intensity or power of the ultraviolet radiation. This form of electromagnetic radiation has wavelengths longer than x-rays but is still shorter than visible radiation. An active material known as polycrystalline diamond is being used for reliable ultraviolet sensing. UV sensors can discover the exposure of environment to ultraviolet radiation.

　　Touch sensor which acts as a variable resistor as per the location where it is touched. Generally, softwares are interfaced to the touch sensors. In such a case, a memory is being offered by the software. They can memorize the ‘last touched position’ when the sensor is deactivated. They can memorize the ‘first touched position’ once the sensor gets activated and understand all the values related to it.