In the process of using sensors to detect single and double sheets of PCB, the most effective and simplest method is to use single and double sheets to detect sensors. However, when detecting single and double sheets, it will be easily affected by the material and thickness of the tested object, which will interfere with the detection of some special materials. The main reason is that the single and double detection sensors adopt the ultrasonic detection principle. If the materials of the tested objects are different or too thick, the ultrasonic energy emitted by the single and double detection sensors cannot penetrate. Secondly, there will be some holes on the surface of PCB for connecting circuits, some of which are very large and some are even very long. If two or more PCB boards are stacked together, the ultrasonic double-piece detection sensor will pass through these holes during detection, thus affecting the correct output of detection results. There are many kinds of PCB boards, so it is not very practical to detect them with ordinary ultrasonic single and double sensors. Therefore, in view of this special detection case, Dongguan Zhonghao customized a set of sensor solutions for customers, using weighing sensors to detect whether the PCB board is single-sided or double-sided.
The weight of each PCB is fixed, and the weight of PCB detected by the weighing sensor will not be affected by its own material. If the weight of one PCB board is 20g, then the mass of two PCB boards is 40g. We can accurately distinguish whether a PCB is one or two by judging the weight ratio, and then proceed to the next processing procedure, that is, when using the weighing sensor to detect single and double sheets, we can ignore the external influences such as the material and shape of the measured object. Meet the customer's test requirements.
Dongguan Zhonghao Automation Technology Co., Ltd. is a leading supplier of industrial automation sensor products and an expert in sensor solutions. If you have any sensor problems, you can come to Zhonghao! Using weighing sensors to detect single and double PCB boards once again shows Zhonghao's strong sensor solution capability and will provide customers with the most suitable personalized sensor solution.