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Device and method for detecting connectivity of automotive electrical appliances based on current detection

A technology for automotive electrical appliances and detection devices, applied in the direction of electrical testing/monitoring, can solve the problems of increasing the cost of controller hardware and software, not covering electrical connectivity detection, increasing the cost of the controller, etc., to save the cost of the controller and automate High degree, reduce the effect of electrical connection failure

Active Publication Date: 2015-11-18
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Device and method for detecting connectivity of automotive electrical appliances based on current detection
  • Device and method for detecting connectivity of automotive electrical appliances based on current detection

Examples

Experimental program
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Effect test

test example 1

[0051] G, the test host 1 communicates with the display 3 to display the test result through the display 3 and prompt the operator to turn off the switch 1, and the operator turns off the switch 1 according to the prompt; so far, the system test case 1 is over;

[0052] H. According to the way from step D to step G, execute all test cases in sequence;

[0053] 1. After all the test cases are completed, the test host 1 communicates with the display 3 to prompt the operator to remove the current clamp 2 and switch the vehicle power supply gear to the OFF gear through the display 3, and the operator performs the corresponding operation according to the prompt;

[0054] J. The system summarizes the test results of all test cases and uploads them to the data storage server 4; so far, the system ends the test of the vehicle, conducts a comprehensive test case test for each vehicle according to this method, and uploads it to the data storage server 4, and finally To achieve the purpo...

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PUM

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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 automobile. During the final assembly process, it is easy to have misconnection, missed 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 test the electrical connection of the vehicle on the production line, so as to reduce the zero-kilometer failure of the vehicle and prevent the failure of the vehicle 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 v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
Inventor 罗贤君周晶洁
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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