Automatic testing system for PCBs

Abstract

The invention discloses an automatic testing system for PCBs. The automatic testing system for the PCBs comprises a detection device (8) and a control cabinet (2). The detection device (8) comprises relays, air pumps, solenoid valves, air cylinders and detection probes. The control cabinet (2) comprises an interface unit, a data processing unit, a comparison unit, a control unit, a database and an alarm unit. The control unit is connected with the relays through a parallel card. The relays are connected with the solenoid valves respectively. The solenoid valves are connected with the air cylinders and the air pumps respectively. The detection probes are fixedly connected with the lower portions of the air cylinders. The detection output of the detection probes are connected with the interface unit through buses. The interface unit is connected with the data processing unit. The output of the data processing unit is connected with the comparison unit. The comparison unit is connected with the control unit and the database respectively. The control unit is also connected with the alarm unit. By the adoption of the automatic testing system for the PCBs, detection and data analysis and processing are all controlled automatically, and intelligent analysis and comparison are achieved, so the detection accuracy can be improved, the detection time can be shortened, and the production cost can be lowered.

Description

technical field [0001] The invention relates to the technical field of PCB board testing devices, in particular to a PCB board automatic testing system. Background technique [0002] With the rapid development of electronic technology, the output of printed circuit boards (PCBs), which are widely used in various electronic devices, has increased significantly. Technicians need to quickly determine short circuits and open circuit faults on the backplane or locate excessive resistance. [0003] At present, most PCB board inspection devices are manually inspected. To complete the inspection of a workpiece, it needs to go through material picking, discharging, contacting the component to contact the piece to be tested, adjusting the detection switch to detect the item to be tested in sequence, and manually reading and recording the detection value. , lift the contact components, and disassemble the parts to be tested; the above-mentioned procedures are complicated, the labor int...

AI Technical Summary

Problems solved by technology

[0003] At present, most PCB board inspection devices are manually inspected. To complete the inspection of a workpiece, it needs to go through the process of taking material, discharging material, contacting the component to contact the piece to be tested, adjusting the detection switch to detect the item to be tested in sequence, and manually reading and recording the detection value. , lift the contact component, and disassemble the piece to be tested; the above-mentioned procedures are complicated, the labor intensity of the inspectors is high, the inspection time is long, and the inspection efficiency is low, which restricts the mass production of PCB boards, and the cost of manual inspection is high, and the inspection personnel are prone to fatigue. Difficult to be guaranteed, unable to meet production requirements

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