As people's focus on clean and renewable energy grows, the stability and efficiency of photovoltaic power systems have become increasingly important to the global energy revolution. The quality of photovoltaic modules and junction boxes, which are core components of photovoltaic systems, directly impacts the safety and efficiency of the system operation.

Wayzim Technology Co., Ltd., as a leading enterprise in machine vision, regards the solution system centered on logistics technologies and self-developed and self-manufactured capabilities as its core strategies. Wayzim continues to develop and innovate in machine vision, big data, and deep learning technologies. One of Wayzim's key frontier projects is to provide detection solutions for the photovoltaic industry.

Photovoltaic 3D Measurement System

To deliver efficient and accurate detection services for photovoltaic modules and junction boxes, Wayzim developed a photovoltaic 3D measurement system. The system uses 3D Laser Profile Sensors for non-contact and high-precision measurement, which can quickly acquire the 3D coordinate information of objects to detect defects on photovoltaic components. Additionally, the system leverages a suite of intelligent algorithms to enhance the detection efficiency and precision.

▲ Defect Detection of Photovoltaic Cell Surfaces

01 Core Equipment and Technology: 3D Laser Profile Sensors + Sub-pixel Image Processing Technology

By applying the principle of triangulation, Wayzim's 3D Laser Profile Sensors can efficiently acquire the profile data through laser emission and reception, and then perform image processing. The product features high-precision measurement capabilities and can meet the diverse detection needs of various workpieces. To improve measurement precision, Wayzim uses innovative algorithms to eliminate angle errors between the laser beams and objects.

▲ 3D Laser Profile Sensors

In machine vision, sub-pixel image processing technology is a milestone of technological advancement. With the help of 1/64 sub-pixel image processing technology, Wayzim has significantly enhanced measurement precision.

To improve the accuracy of photovoltaic detection, Wayzim developed multiple intelligent algorithms. The gray centroid method-based laser line extraction algorithm improves the algorithm stability, and the anti-light interference algorithm is designed to mitigate effects caused by high reflectivity.

02 Industrial Application: Detection of Photovoltaic Modules in New Energy Industry

By accurately measuring target features, Wayzim's photovoltaic 3D measurement system can perform nondestructive testing on photovoltaic modules and detect the welding quality of junction boxes. The nondestructive testing technology can improve module quality and reliability and reduce system costs.

The core components of a photovoltaic module are cells. During production, the cells are prone to quality defects such as grid breaks and missing corners. If not detected promptly, these defects may impact module quality.

▲ Detectable Defects on Cell Surfaces

Wayzim's photovoltaic 3D measurement system can perform real-time image acquisition on complete cells, and identify and analyze defects through algorithm. The system can also measure the dimensions and deviations of the cells.

▲ Cell Dimensions

When scanning junction boxes, the system generates point cloud maps, extracts all details, and automatically identifies and marks defects by analyzing the point cloud maps, thereby completing the defect detection of junction boxes.

The 3D measurement system is specifically designed for the photovoltaic industry, and can meet requirements in various scenarios by using the 3D Laser Profile Sensor with a high frame rate. In addition, the system is equipped with a reliable laser line extraction algorithm, to improve detection efficiency and accuracy and support the development of the photovoltaic industry. The system also features comprehensive post-processing algorithms for complex scenarios and uses advanced camera calibration technology to eliminate distortion effects. Additionally, the system includes user-friendly measurement software.

The photovoltaic industry plays an important role in China's new energy sector. With national support, the photovoltaic industry is rapidly developing, but photovoltaic enterprises face numerous challenges in operations and maintenance management. For example, the operational efficiency of power stations needs to be improved. As a technology enterprise, Wayzim is committed to developing intelligent operations and maintenance technologies, and providing solutions to enterprises, to improve efficiency and reduce costs of the power stations.

The continuous R&D investment of Wayzim has attracted a large number of outstanding R&D talents, fueling the company's high-quality growth. Wayzim's technological innovations not only deliver economic value to photovoltaic power stations but also help reduce carbon emissions. By improving the operational efficiency of the power stations and reducing energy consumption, Wayzim helps lower the emissions of greenhouse gases such as carbon dioxide, playing a vital role in reaching China's carbon reduction targets.