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Vehicle failure detection method and device based on smart phone

A technology for car breakdowns and smartphones, applied in the direction of measuring devices, machine/structural component testing, vehicle testing, etc., to achieve the effects of easy upgrades, reduced storage space, and easy portability

Inactive Publication Date: 2010-12-29
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0018] The present invention is based on the current situation of the existing smart phone application, and proposes to solve the problems of the above-mentioned existing automobile diagnostic instrument

Method used

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  • Vehicle failure detection method and device based on smart phone
  • Vehicle failure detection method and device based on smart phone
  • Vehicle failure detection method and device based on smart phone

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Embodiment Construction

[0037] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0038] like figure 1 Shown, the working principle of the present invention is as follows:

[0039] The hardware of the automotive fault diagnosis communication converter 2 mainly includes a microprocessor MCU5 and peripheral communication interfaces and circuits, which are OBD communication interface and circuit 6, Bluetooth interface and circuit 4, and USB interface and circuit 7.

[0040] Among them, the OBD communication interface and circuit are responsible for the processing of the communication signal with the automotive electronic controller ECU; the Bluetooth interface and circuit, and the USB interface and circuit are responsible for the processing of the communication signal with the smart phone.

[0041] The communication between the automotive fault diagnosis communication converter and the smart phone and the communication between the automotive fault di...

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Abstract

The invention discloses vehicle failure detection method and device, relating to a method and a device for realizing vehicle failure detection by using a smart phone. Failure detection software operating on the smart phone proposes a vehicle failure detection request, and the detection request is sent to a vehicle failure detection communication converter through a Bluetooth interface or a USB interface of the smart phone. The vehicle failure detection communication converter is directly connected with a vehicle detection port, and is used for converting the detection request from the smart phone into corresponding signals according to the requirements for application layers, data link layers, physical layers and the like specified by ISO 15031-5 and sending the corresponding signals to a vehicle electronic control unit (ECU) so as to realize vehicle failure detection. Meanwhile, the vehicle failure detection communication converter returns the feedback information of the vehicle electronic control unit (ECU) to the smart phone, and the feedback information is displayed by the smart phone.

Description

technical field [0001] The invention relates to a method and a device for detecting an automobile fault, in particular to a method for realizing an automobile OBD fault detection by using a communication gateway without an LCD screen display and a smart phone, and belongs to the field of automobile fault detection. Background technique [0002] With the advancement of automotive electronic technology and strict environmental protection requirements, the current automotive electronic control modules, especially the automotive engine control module (hereinafter referred to as ECM), usually have an on-board fault diagnosis OBD function. In 1996, the second generation of OBD (ie OBD-II) began to be implemented in the United States; in 2000, Europe also began to implement the corresponding OBD regulations (ie EOBD). In 2005, my country promulgated the National III Regulations, which put forward the requirements for the OBD system for the first time, and it has been implemented in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007H04M1/725H04M1/72409H04M1/72412
Inventor 钟桢
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