Automotive wiring harness conduction detection method

Abstract

The invention relates to an automotive wiring harness conduction detection method. A method for detecting the connection of a single circuit comprises the following steps of: setting voltages V1 and V2 as voltages of the two ends of an automotive wiring harness loop respectively, applying a standard voltage to V1 and performing logic comparison on the voltage V2 to obtain a voltage Vo; and judging the voltage Vo to obtain a judgment result indicating whether a wiring harness is qualified or not. The automotive wiring harness detection method for detecting and judging a multi-loop multi-endpoint circuit comprises the following steps of: when all the endpoints of an automotive wiring harness need to be judged, defining a sending end and a receiving end, identifying each circuit, sending a standard voltage signal at the sending end, receiving the signal at the receiving end, comparing received data with standard data and judging to obtain the on-off and wiring conditions of the whole wiring harness; displaying a test result graph on a liquid crystal display and providing a voice prompt; and after all circuits pass the test, printing a product qualified tag or outputting a signal to control an automatic tool to pop up the automotive wiring harness. The method has a reasonable design and obvious effect.

Description

technical field [0001] The invention relates to a detection method for an automobile, in particular to a detection method for the conduction of an automobile wiring harness. Background technique [0002] The safety performance of automobile wiring harness is directly related to the safety of automobiles, so automobile manufacturers pay more and more attention to the quality of wiring harness. At present, the detection of the continuity of the automobile wiring harness has a single error type definition, which cannot distinguish multiple error types, and cannot provide accurate positioning of the error position, so that the operator cannot accurately find the problem point, and the work efficiency is reduced. Most of the existing conduction machines in China are controlled by PLC or single-chip microcomputer. The LED display can only display the serial number of a single I / O port, and cannot provide more detailed information for incorrect wiring harnesses. In this way, the i...

AI Technical Summary

Problems solved by technology

At present, the detection of the continuity of the automobile wiring harness has a single definition of error types, which cannot distinguish multiple error types, and cannot provide accurate positioning of the error position, so that the operator cannot accurately find the problem point and reduces the work efficiency.

Most of the existing conduction machines in China are controlled by PLC or single-chip microcomputer. The LED display can only display the serial number of a single I / O port. For incorrect wiring harnesses, more detailed information cannot be provided.

In this way, the interactivity is poor, and it is extremely inconvenient for the inspector to operate. The LED display cannot display intuitive and visualized graphics, which is not humanized enough.

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