Proximity sensors are characterized by long service life, reliable operation, high repetitive positioning accuracy, no mechanical abrasion, no sparks, no noise, and strong vibration resistance. In the automatic control system can be used as limit, counting, positioning control and automatic protection link. It is widely used in machine tools, metallurgy, chemical industry, textile and printing industries.
Before telling the application of proximity sensors, let's first understand that it has some of the main functions:
1、Check distance
Detecting the stop, start and pass position of elevator and lifting equipment; detecting the position of vehicles, preventing two objects from collision detection; detecting the set position of the working machinery, the limit position of the moving machine or parts; detecting the stop position of the rotary body, the open or closed position of the valve; detecting the piston moving position in the cylinder or hydraulic cylinder.
2, size control
Size control device for sheet metal punching and shearing; automatic selection and identification of the length of the metal parts; detection of automatic loading and unloading when the height of the pile; detection of the length, width, height and volume of the object.
3、Detect the presence or absence of objects
Detect the presence or absence of product boxes on the production and packaging line; detect the presence or absence of product parts.
4、Rotation speed and speed control
Control the speed of conveyor belts; control the rotational speed of rotating machinery; control the speed and number of revolutions together with various pulse generators.
5、Counting and control
Detecting the number of products flowing through the production line; measuring the number of revolutions of high-speed rotating shafts or disks; counting parts.
6、Detecting abnormality
Detecting the presence or absence of bottle caps; judgment of qualified and unqualified products; detecting the lack or absence of metal products in the box; distinguishing between metal and non-metal parts; detecting the presence or absence of labeling of products; alarming of dangerous areas of cranes; automatic starting and stopping of safety escalators.
7、Measurement control
Automatic measurement of products or parts; detection of meters, meters of the pointer range and control of the number or flow; detection of buoys to control the height of the measurement surface, flow; detection of stainless steel drums in the iron buoy; instrument range upper limit or lower limit of the control; flow control, level control.
8, recognize the object
According to the code on the carrier to identify yes and no.
9、Information transmission
ASI (bus) connects the sensors in each position on the equipment in the production line (50-100 meters) in the data transmission back and forth, etc.. At present, the proximity sensor in industrial production, transportation, consumer electronics and other industries in the field of a wide range of applications.