Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

DTC detection and recording method of vehicle electronic control unit and vehicle electronic control unit

A technology of electronic control unit and recording method, which is applied in the direction of electrical test/monitoring, test/monitoring control system, general control system, etc., can solve problems such as false alarms of fault codes, so as to solve false alarms of fault codes, avoid panic, and improve The effect of brand effect

Active Publication Date: 2019-01-29
GUANGZHOU AUTOMOBILE GROUP CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a vehicle electronic control unit and its fault code detection and recording method to solve the problem in the prior art that some normal phenomena are treated as faults, resulting in false alarms of fault codes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • DTC detection and recording method of vehicle electronic control unit and vehicle electronic control unit
  • DTC detection and recording method of vehicle electronic control unit and vehicle electronic control unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In order to further illustrate the technical means and functions adopted by the present invention to achieve the intended invention purpose, the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0031] As more and more electrical appliances are used in automobiles, their functions are becoming more and more complex, especially the introduction of controller area network (CAN) technology, which makes the traditional maintenance personnel's senses and experience supplemented by general tools such as multimeters to analyze The way cars break down, it's getting harder. In order to solve this problem, the electronic control unit (ECU, or controller, node) of the car integrates a diagnostic function inside. When the ECU is working normally, it will monitor its own input and output ports and related information inside the ECU in real time. Once a fault is found, it will judge the fault and record the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fault code detection and recording method for a vehicle electric control unit, and the method comprises the steps that S10, the electric control unit carries out the fault detection: switching to steps S21-S23 if the electric control unit detects a fault; S21, the electric control unit judges whether an ignition key is in a CRANK state or not: enabling the electric control unit not to record any fault code if the ignition key is in the CRANK state; S22, the electric control unit judges whether the time when the ignition key is in an IGN ON state exceeds the first preset time or not: enabling the electric control unit not to record related fault codes of network communication if the time when the ignition key is in the IGN ON state exceeds the first preset time; S23, the electric control unit judges whether the ignition key is in an ACC state or IGN OFF state or not: enabling the electric control unit not to record the related fault codes of network communication if the ignition key is in the ACC state or IGN OFF state; S30, the electric control unit carries out the coding of a detected fault if the detected fault does not belong to faults which are not recorded at all judgment steps. The method provided by the invention gives consideration to the impact on fault setting from the normal operation of a vehicle, can prevent some normal conditions from being taken as faults, and solves a problem of false alarm of fault codes.

Description

technical field [0001] The invention relates to the technical field of automobile electronics and automobile diagnosis, in particular to a vehicle electronic control unit and a fault code detection and recording method thereof. Background technique [0002] Automobile diagnosis is that the vehicle's ECU (Electronic Control Unit, electronic control unit, or controller, node) monitors its own working conditions in real time during normal operation, and detects the input and output ports of the controller. Once a fault is found, it will send a DTC (Diagnostic Trouble Code , diagnostic fault code) and other fault diagnosis information are stored in the internal memory of the controller, and at the same time, it is determined whether to light the fault alarm light according to the severity of the fault. If the warning light needs to be turned on, the signal is sent to the instrument panel through the network, the warning light is turned on, and the driver is prompted to repair an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G05B23/02
CPCG05B23/0213
Inventor 黄丽芳黄少堂何晔郭嘉强温小锋
Owner GUANGZHOU AUTOMOBILE GROUP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com