Although non-contact speed sensors are theoretically superior in eliminating slippage and directly detecting the linear speed of conveyor belts, there are still many practical problems that need to be solved in practical application, so they have not been widely applied in engineering. The touch type speed sensor widely used in practice has a simple structure and convenient device maintenance. Some manufacturers install speed measuring components directly on the tail wheel or roller, replacing the conflicting wheel with the tail wheel or roller. Under normal conditions, the touch type speed sensor can measure the conveying speed well. The disadvantage is that the collision wheel is stuck with mud, causing the diameter to increase or slip, resulting in speed measurement errors and cannot accurately reflect the linear speed of the conveyor belt.

Hunan Industrial Robot Industrial Automation Changsha Automation Equipment Manufacturer Non standard Automation Equipment Automation Production Line Assembly Line Assists Robot Industrial Control (5). jpg Secondary Appearance (Display Appearance) Secondary Appearance is divided into analog, digital, computer, and distributed.

The simulated appearance of the anti-static teaching workbench is usually composed of separate components or small-scale integrated circuits, with poor stability and low reliability. It only has the function of indicating cumulative values and cannot actively eliminate the influence of external factors such as temperature, humidity, electromagnetic field disturbance, and tare weight addition caused by material accumulation on the weighing rack. So analog appearances are currently rarely used. The reliability of digital appearance has improved compared to analog appearance. Additional simple hardware can also be used for peeling operations with manual intervention. With the development of large-scale integrated circuits dominated by microprocessors and CPUs, digital appearances were quickly replaced by computer style appearances.

A computer style appearance is an appearance with a microprocessor CPU that can be actively operated through program control, including actively selecting ranges and measurement methods, states, actively adjusting variables, and actively testing. Through data processing, measurement accuracy is improved.