Introduction to Body Sensors

　　Human body proximity sensor, also known as contactless proximity sensor, is an ideal electronic switch sensor. When the metal detection body is close to the sensing area of the sensor, the switch can quickly send out electrical instructions without contact, pressure, spark, and accurately reflect the position and travel of the moving mechanism. Even if it is used for general travel control, its positioning accuracy, operating frequency, service life, convenience of installation and adjustment, and applicability to harsh environments are unmatched by general mechanical travel switches. It is widely used in machine tools, metallurgy, chemical industry, textile and printing industries. In the automatic control system, it can be used as a limit, counting, positioning control and automatic protection link. The proximity sensor has the characteristics of long service life, reliable operation, high repeated positioning accuracy, no mechanical wear, no spark, no noise, strong vibration resistance, etc. Therefore, the application scope of proximity sensors is increasingly broad, and the speed of their own development and innovation is also extremely rapid.

　　As a means of technical prevention, human proximity sensor has been gradually recognized and applied. In order to better implement the national standard GB/T10488-1997 Human Proximity Sensor and smoothly implement it, so that more people can understand the principle and application of human proximity sensor, this article introduces the basic knowledge about the principle and application of human proximity sensor based on the human proximity sensor developed and produced by Nanjing Yuantuo Technology.

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