Automatic open circuit test box for automobile electronic equipment performance test and test method thereof

Abstract

The invention discloses an automatic open circuit test box for an automobile electronic equipment performance test. Two sides of the automatic open circuit test box are provided with a to-be-tested prototype wire harness connection port and a vehicle-mounted load wire harness connection port. The test box is also provided with an external power supply interface; a timing relay, a normally-closed relay and a trigger switch are arranged in the test box; the timing relay controls the time when the normally-closed relay enters a working state; two ends of the normally-closed relay are connected with the to-be-tested prototype wiring harness connecting port and the vehicle-mounted load wiring harness connecting port; when the normally-closed relay enters the working state, the to-be-tested prototype wiring harness connecting port is disconnected from the vehicle-mounted load wiring harness connecting port; and when the timing time is up, the timing relay enables the normally-closed relay to recover a normally-closed state, and the to-be-tested prototype wiring harness connecting port is connected with the vehicle-mounted load wiring harness connecting port. The invention also discloses a test method of the test box. By the adoption of the technical scheme, manpower needed by testing is reduced, the labor intensity of testing personnel is relieved, and accurate control over testing time is achieved; and operation is simple.

Description

technical field [0001] The invention belongs to the technical field of electric performance test of automobile electronic equipment. More specifically, the present invention relates to an automated open circuit test box for performance testing of automotive electronic equipment. The invention also relates to a testing method of the test box. Background technique [0002] The open circuit test is an item in the electrical performance test of automotive electronics. According to standard requirements, the input / output lines of automotive electronic equipment need to be disconnected for 10 seconds and then reconnected to observe the status of the electronic equipment; all wiring harnesses are disconnected together for 10 seconds and then reconnected to observe the status of the electronic equipment. So the device needs two working states: [0003] 1. Each relay controls the connection after the line is disconnected; [0004] 2. Each relay is connected after the control circ...

AI Technical Summary

Problems solved by technology

[0006] In the ISO16750-2 automotive electronic electrical performance test, 4.9 in the standard has been using manual plugging and unplugging of the connector for the open circuit test. The timing of manual operation is not accurate enough, not convenient enough, and it is not professional enough for customers.

The above-mentioned prior art scheme is relatively simple, requires manual calculation time, and has a low degree of automation

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