PCB Detection System Using Barcode and Image Synchronization
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Solution Overview
Problem
Current detection systems for printed circuit boards (PCBs) on production lines require PCBs to be removed and read separately, leading to inefficiencies in production and detection processes.
Innovation Solution
A detection system comprising a conveying belt, sensing device, image acquiring device, bar code reading device, and computing device that allows for direct detection of PCBs on the production line by calculating image acquisition time, converting images into contour pictures, querying bar code positions, and reading production serial numbers to retrieve corresponding detection draftings for optical detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detection PCB is removed from production line for separate detection, then detection accuracy can be maintained, but production efficiency and detection efficiency are reduced
Solution Approach 1:
The patent merges the detection process with the production line by installing detection devices (image acquiring device, bar code reading device) directly on the conveying belt. This allows detection PCB to be detected while still on the production line, eliminating the need to remove it for separate detection, thus improving both production efficiency and detection efficiency while maintaining detection accuracy through direct optical detection and bar code reading.
2Reliability
If detection PCB is removed from production line for separate detection, then detection can be performed, but time consumption increases and efficiency decreases
Solution Approach 1:
The patent implements preliminary action by pre-installing detection devices on the conveying belt before the detection PCB arrives. The image acquiring device and bar code reading device are positioned to automatically capture images and read bar codes as the PCB passes by, eliminating the need for manual removal and subsequent separate detection processes, thus reducing time consumption while maintaining detection capability.
3Productivity
If multiple detection devices are installed on conveying belt, then detection efficiency improves, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a integrated detection system where the conveying belt serves multiple functions: it conveys the detection PCB and simultaneously supports the image acquiring device and bar code reading device for detection purposes. The computing device processes both image data and bar code information, and the detection drafting library stores multiple types of detection parameters, allowing a single system to handle various detection tasks efficiently without requiring separate independent systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient detection of PCBs on the production line, thereby improving production and detection efficiency by allowing real-time identification and processing of PCBs without the need for manual removal.
Implementation Method 1
a sensing device, arranged on a fixed position, and triggering a computation instruction when sensing the detection printed circuit board
Implementation Method 2
an image acquiring device, vertically arranged on the belt, and acquiring an acquisition picture comprising the detection printed circuit board
Implementation Method 3
a bar code reading device, vertically arranged on the belt, and reading a production serial number according to a movement instruction corresponding to bar code
Implementation Method 4
an image processing module, conversing the acquisition picture into a contour picture through a two-value process and an image restoration process
Implementation Method 5
a conveying belt, conveying each of a plurality of detection boards laying on the belt
Data Source
AI summary
A detecting system and method suitably used on a production line are disclosed, where a sensing device is arranged on a fixed position of a conveying belt, an image acquiring device and a bar code reading device are vertically arranged above the conveying belt, respectively, a computing device calculates a picture acquiring time of the acquired picture comprising a detection printed circuit board (PCB) acquired by the image acquiring device, and the computing device calculates a position to be moved by the bar code reading device to control the bar code reading device to move and read the production serial number of the detection PCB, whereby a corresponding detection drafting is queried according to a production serial number and optically detecting the detection PCB according to the detection drafting. By means of the above technical means, the detection PCB may be detected on the production line, and thus promoting the production efficiency and detection efficiency of the detection PCB.