PCB serves as the carrier of electronic components and the core of electrical connections. Its quality directly determines the ultimate performance of products such as smartphones and computers.

Due to the ultra-thin thickness of PCBs, accidental overlapping of two or even multiple boards frequently occurs during operation on equipment like automatic feeders.

Machine vibration is inevitable during high-speed operation. Traditional thickness detection methods, such as mechanical contact measurement and ordinary photoelectric sensors, either generate measurement errors caused by vibration or fail to meet accuracy requirements, making them unable to distinguish the subtle thickness difference between single-layer and multi-layer PCBs.
 

Solution: HeYi CMOS Laser Displacement Sensor

Targeting the industry pain point of PCB multi-layer overlapping detection, the LC-S Series CMOS Laser Displacement Sensor stands out as an ideal solution with remarkable advantages of compact size, tiny light spot and high precision.

 

Adopting the advanced laser triangulation principle, this sensor series achieves micron-level thickness measurement accuracy and accurately identifies PCB multi-layer overlapping conditions.

Core Features

High-precision Measurement: Captures tiny thickness variations of PCBs stably, and reliably differentiates single-layer from multi-layer boards.

Fast Response Speed: Suitable for on-line detection on high-speed production lines.

Diversified Communication Interfaces: Supports switch output, analog output, RS485 and other multiple output modes, enabling easy connection with host computers.

Application Solution

For PCB multi-layer overlapping detection, a pair of LC-S Series CMOS Laser Displacement Sensors are installed in opposite alignment on the automatic feeder of the PCB production line, with laser beams irradiating vertically onto the PCB surface.

 

As PCBs pass through the detection area via roller conveying, the upper and lower sensor heads collect real-time thickness data with high precision. The data is transmitted to the host computer via RS485 or analog signals to determine whether PCB overlapping occurs.

As the electronics manufacturing industry moves toward higher precision and efficiency, quality control in every subtle link is crucial. With outstanding accuracy and stability, the LC-S Series CMOS Laser Displacement Sensor delivers a simple and effective solution for PCB multi-layer overlapping detection, helping electronics manufacturers improve quality and production efficiency.