Research Status of Optoelectronic Sensors at Home and Abroad

Research Status of Optoelectronic Sensors at Home and Abroad

Due to the wide range of fields involved in the application of photoelectric sensors, their research and development have attracted high attention around the world, and countries are competing to research and develop them, causing fierce competition. From its initial application in military to civilian use, and closely related to our daily lives, it can be said that modern life cannot be separated from the participation of photoelectric sensors, such as fax machines, copiers, scanners, printers, garage door openers, LCD displays, colorimeters, spectrometers, automotive and medical diagnostic instruments, and so on.

The United States is one of the countries with the earliest and highest level of research on optoelectronic sensors, and its applications in military and civilian fields have developed rapidly. In terms of military applications, research and development mainly include underwater detection, aviation monitoring, nuclear radiation detection, etc. The United States was also the first country to use photoelectric sensors in the civilian field. Using photoelectric sensors to monitor important parameters such as current and temperature in the power system, and to detect bacteria and viruses in meat and food. The United States has the world's most robust line of photoelectric sensor products, with over 12000 products including self-contained or amplifier separated types, limit switch shaped or small sensors, precision detection or long-distance detection sensors, with a detection distance of up to 305m. And it has the most complete range of standard fiber optic and customized fiber optic products in the industry. Most products have a protection level of NEMA6P and IP67. Japan and Western European countries also attach great importance to and invest a large amount of funds in the research and development of photoelectric sensors. In the 1990s, various first-class civilian photoelectric sensors were developed, and Japanese electrical appliances were renowned worldwide for their affordable prices and good quality. Large enterprises from Western European countries have also actively participated in the research and market competition of optoelectronic sensors. The starting time of research on photoelectric sensors in China is not far behind that of the international community. Hundreds of units have been working in this field, mainly in the areas of photoelectric temperature sensors, pressure gauges, flow meters, liquid level gauges, ammeters, etc. They have conducted extensive research and achieved hundreds of scientific research results, some of which have reached the world's advanced level.