Device and method for detecting whether connector pin in PCBA is in pseudo soldering or not in single-ended mode

Abstract

The invention relates to a device and a method for detecting whether a connector pin in a PCBA is in pseudo soldering or not in a single-ended mode, and the device and the method are low in protectioncost, accurate in testing and efficient. The device comprises a power supply, a signal source (1) and a testing module, wherein the power supply supplies power to the signal source (1) and the testing module; and signals generated by the signal source are divided into reference signals and tested signals, the testing module carries out attenuation processing on the tested signals, the attenuatedtested signals are connected to a pin to be tested of the PCBA connector, the testing module carries out amplification and filtering processing on the tested signals led out from the pin to be tested,the testing module carries out attenuation, amplification and filtering processing on the reference signals, then compares the reference signals with the tested signals subjected to amplification andfiltering processing, and judges whether the connector is in pseudo soldering or not according to a comparison result. The invention relates to the field of detection of electronic and electrical products or equipment.

Description

technical field [0001] The invention relates to the detection field of electronic and electrical products or equipment, in particular to a device and method for single-end detection of whether a connector pin in a PCBA is soldered or not. Background technique [0002] At present, in the SMT processing plants of the electronic assembly industry, there is a situation of false welding of connector pins with a large number of pins. It is very difficult for the OQC inspection of the processing plant, knowing that there is a false soldering situation, but there is no good way to solve it. At present, manual visual inspection is basically adopted, and a multimeter is used for continuity test only in rare special cases. For example, the customer thinks that a certain type of PCBA connector is very important, and must confirm that each pin is 100% good. In this case, the number of PCBA processing will not be large, and most of them are only in the trial production stage. [0003] I...

AI Technical Summary

Problems solved by technology

[0004] There are obvious shortcomings in manual visual inspection or manual inspection or automatic inspection with a multimeter. If manual inspection is performed, it takes a lot of time to operate the multimeter, which takes more than 5 times more than visual inspection, and the labor cost is too high. High; automatic testing can save time, but the development cost is too high, and the cost of making a device is more than 100,000 yuan, which is obviously not feasible for the low-profit electronic assembly industry

Images