Device and method for detecting connectivity of electric appliances of automobile on basis of current detection

Abstract

The invention discloses a device and a method for detecting the connectivity of electric appliances of an automobile on the basis of current detection. The device comprises a test host, a current clamp, a display and a data storage server; the test host transmits operation tips to the display according to preset test cases, operators operate switches of the automobile according to the operation tips displayed on the display, the current clamp acquires currents in real time and feeds current values to the test host, a current variation curve is formed after the test host receives the current values for a period of time, the test host compares the sample values to qualified values and judges whether a test case is qualified or not according to a qualified current curve range corresponding to a certain preset test case, and a test result is uploaded to the data storage server and is displayed on the display. The device and the method have the advantages that the device and the method are applicable to detecting the connectivity of the electric appliance of a general assembly, connection faults of the electric appliances of the automobile can be accurately detected, the detection coverage is wide, the device is high in automation degree and can be used conveniently and quickly, and the device and the method are applicable to various types of automobiles.

Description

technical field [0001] The invention belongs to the detection technology of automobile electrical appliances, in particular to a device and method for detecting the connectivity of automobile electrical appliances based on current detection. Background technique [0002] With the rapid development of the global automobile industry, there are more and more electronic devices on the car. During the assembly process, it is easy to have misconnection, missing connection and poor contact of electrical connectors. In order to reduce the electrical connection failure of the vehicle when it leaves the factory, it is necessary to detect the electrical connection of the vehicle on the production line to reduce the zero-kilometer failure of the vehicle and prevent such faulty vehicles from entering the sales market. Therefore, in the research of vehicle electrical appliance detection, it is of great significance to design a fast, effective and widely applicable detection device and met...

AI Technical Summary

Problems solved by technology

[0005] (1) The detection coverage is limited. The detection scheme based on the controller self-diagnosis can only detect faults that have been diagnosed by the controller. Due to various reasons, the controller will not self-diagnose the connectivity of the electrical appliances used, so it cannot cover Connectivity testing of all electrical appliances;

[0006] (2) Increase the cost of the controller. Based on the controller self-diagnosis detection scheme, the controller needs to have a self-diagnosis function, which will increase the hardware and software costs of the controller, and there will be a lot of testing and verification work, so the control of a large number of self-diagnosis functions The device is mainly used in high-end models;

[0007] (3) For many electrical functions in low-end models, the actuators are directly controlled by switches and are not connected to the controller. In low-end models, the connectivity based on the self-diagnosis detection scheme of the controller cannot be detected;

[0008] (4) The manual detection scheme may easily lead to missed detection due to human intervention, and this scheme can only detect human-perceivable content, and the detection coverage is limited

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