中英文对照外文翻译文献
Fig. 6. The photoelectric detector of strip deviation
5 The Development of Photoelectric Sensor
Photosensitive semiconductor devices rapidly develop with the development of semiconductor technology in the 60's. During this period, a variety of optical materials have been fully studied and widely used. People have developed a variety of
optoelectronic devices suitable for different occasions by the research about the principle of the photoelectric effect and device. Photoelectric sensor manufacturing process also achieves a high level with the development of film technology, surface technology and large scale integrated circuit technology, and the cost of the product is greatly reduced. In the past few decades, infrared sensors and other optical sensing devices access to a wide range of applications in the field of aerospace and defense. In the next few years, the main sensor technology will be breakthroughs in the sensitivity, resolution and overall performance. Photoelectric sensor applications has been extended to the textile, paper making, printing, medical, and environmental protection. The study of traditional areas has a new development, such as infrared detection, radiation measurement, optical fiber communication, automatic control and so on.
Infrared sensor and low light level sensor are two of the most widely used photoelectric sensors. The resolution of infrared sensors is increasing, and the reliability is improved with reducing the demand for cooling. Low light level sensors rely on the traditional image intensifier to improve, and the sensor's analog signals convert to digital signals. The development trend of the two technologies is the integration of a variety of multispectral sensors technology that can maximize the performance of individual technologies, more and more have applied to handheld devices and unmanned vehicles
中英文对照外文翻译文献
and other fields.
Combination of several different photoelectric sensors' strong points has many advantages, but only it is used in an appropriate forum that can play these advantages. For example, low light level sensors are more suitable for observing a wide area at night, but are insufficient to detect static person hidden in the woods. In this case, if we fuse long-wave infrared camera with low light level sensors, the staff after trees will be visible. If we fuse another short-wave infrared sensor, we can even identify the person's facial features after trees.
In addition, another major trend of the photoelectric sensor is to increase the number of pixels focal plane arrays.
