Wire harness test control panel and wire harness test control method

Abstract

The invention relates to a wiring harness test control board and a wiring harness test control method. The method comprises the following steps: singlechips are initialized; a singlechip (1) detects whether a keypress signal exists; the input keypress signal is transmitted to a singlechip (2), and the singlechip (2) displays pressed keys; whether a pound key is pressed is judged, and the keypress signal saved in the singlechips is cleared to wait for the re-entry; the singlechip (2) judges whether a pound key is pressed; a six-digital number which is input through a keyboard is saved; test procedures with corresponding codes are executed, the singlechip (1) outputs a test signal, and the singlechip (2) detects an input signal; the judgment is made by comparing with the standard; a test result is displayed on a liquid crystal; the alarm is performed if the test result is unqualified; and a serial port communication program is transferred to a host computer. The wiring harness test control board and the wiring harness test control method solve detection problems of complex wiring harnesses, for example, wiring harnesses for automobiles have more branches, relays and diodes are arranged on the wiring harnesses, and can detect three states, namely 24V, grounding and suspension, and whether the relays on the wiring harnesses work normally and the diodes are short-circuited and open-circuited.

Description

technical field [0001] The invention relates to a wire harness test control board, in particular to a wire harness test control board for automobiles with many branches and complex wire harness detection such as relays and diodes on the wire harness. Background technique [0002] CN200710104367.8 discloses "a wire harness tester". Its purpose is to provide a bidirectional test for wire harnesses, which can detect diodes, bulbs, resistors, and capacitors connected in cables, and can detect more complex wire harness connections without programming. Standard wire harnesses can directly generate standard data, and Wire harness tester with simple structure. Its disadvantages are: [0003] 1. The output circuit cannot output 24V, and cannot drive the car relay, so the car wiring harness with relay cannot be detected. [0004] 2. The input detection circuit cannot distinguish low level and floating signals. [0005] 3. The test results cannot be transmitted to the upper compute...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, provide a test signal that can output 24V and ground, and can detect three states of 24V, ground, and suspension; effectively detect whether the relay on the wiring harness is working normally , Whether the diode is short-circuited or open-circuited; the test program can be written according to the corresponding single-chip microcomputer according to the different functional wiring harness design, and the test result can be displayed through the display and the unqualified alarm circuit, and the test result can also be uploaded to the PC through the serial port for statistics and analysis. Use the wiring harness test control board with many wiring harness branches, relays, diodes and other complex wiring harness detection problems

Images