Automatic insulation resistance and characteristic resistance tester

Abstract

The invention discloses an automatic insulation resistance and characteristic resistance tester which comprises a testing cable, a multiplexing switch module, a universal meter module, a CPCI bus and an industrial personal computer. The multiplexing switch module is connected with an electrical node interface of a device to be tested through the testing cable and can control an internal relay switch through programs to enable input channels to be automatically disconnected and connected with an output channel, the universal meter module automatically measure a resistance value of an electrical node of the device to be tested through the multiplexing switch module and outputs a measurement result to the CPCI bus, the industrial personal computer reads data from the CPCI bus and performs processing and displaying. The automatic insulation resistance and characteristic resistance tester can automatically test insulation resistance and characteristic resistance of the electrical node of the device to be tested, the problems including complicated connection in the traditional product checkout process and errors, time waste and the like caused by manual operation are solved, and the tester has the advantages of being high in reliability and accuracy and saving the time.

Description

technical field [0001] The invention relates to a resistance tester, in particular to an automatic tester for insulation resistance and characteristic resistance, which belongs to the field of circuit measurement. Background technique [0002] Due to the inspection requirements of the interface electrical nodes of the electrical device, it is necessary to detect the resistance between each electrical node and the casing and the resistance between each electrical node, and the resistance value of all electrical nodes should meet the electrical design requirements of the electrical device. In the existing inspection technology, there is a phenomenon of manually measuring the resistance of a large number of electrical nodes, resulting in a large workload of manual measurement, error-prone, long measurement time, and low intelligence. In order to meet the requirements of automated testing of electrical nodes, automation is required. The resistance detection device should meet th...

AI Technical Summary

Problems solved by technology

In the existing inspection technology, there is a phenomenon of manually measuring the resistance of a large number of electrical nodes, resulting in a large workload of manual measurement, error-prone, long measurement time, and low intelligence. In order to meet the requirements of automated testing of electrical nodes, automation is required. The resistance detection device should meet the requirements of multiple measurement nodes and optional measurement modes. In addition, the electrical nodes also need DC high voltage excitation to detect the withstand voltage of the electrical nodes.

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