英语翻译当今生活是信息时代,是获取信息和处理信息 ,以及信息应用的时代.传感信息与检测技术的重要性在于它是获得信息并对信

Contemporary life in the information age, is to obtain information and process information, and the era of information application。 Sensing the importance of information and detection technology is that it is access to information and to a certain treatment on the basis of information technology, access to information and information processing one important means。Sensing technology is a wide range of knowledge, comprehensive high, very practical, professional courses。 It is from the sensor's basic theory, spoke of the sensor focused on the structure and sensing principle, the sensor is a two-port device, different sensor input - output characteristic is different from the same sensors to adapt to the different characteristics of the signal are different rendering 。Especially when the measured signal is a static signal, two state, the sensor input - output characteristics are completely different。 Sensing technology has many applications in the new knowledge to information, sensing, conversion, processing core, starting from the basic physical concepts to explain the amount of thermal, mechanical volume, geometric parameters such as the measurement principle and method。Photoelectric sensors are optical signals into electrical signals to a sensor。 It is based on the photoelectric effect。 These effects can be divided into three categories。 The first is outside the photoelectric effect, that is, illumination, can escape the surface electronic。 This effect by using a device made of a vacuum phototube, photomultiplier tubes。The second type is the photoelectric effect, that is, the light irradiation can change the resistivity of material。 Such devices include various types of semiconductor photosensitive resistance。 The third category is the photovoltaic effect, ie, under the influence of light, the phenomenon of force generated within the object, this force is called photo-emf。 Such devices include photovoltaic cells, optical transistors。 Photoelectric effect are the use of optoelectronic components by light, the electrical characteristics change。Sensitive in the visible light wavelength is near, including the infrared wavelength and ultraviolet wavelengths。 Digital electronic counter has the advantages of intuitive and accurate count, has been widely used in various industries。 Digital electronic counter triggered by a variety of counting methods, it is by the actual conditions of use and environmental decisions。Mechanical methods are triggered by contact, have adopted a non-contact electronic sensors triggered, photoelectric sensor is one of them, it is a non-contact electronic sensors。 Photoelectric photoelectric sensor made by electronic counters。 This counter is in the factory production lines for product statistics, the counter can not be replaced with other advantages。 The cases of optical electronic counter triggered only two digits, but can be extended by cascading four, or even many。