CN202213546U - Engine fault code display system - Google Patents
Engine fault code display system Download PDFInfo
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- CN202213546U CN202213546U CN2011203032754U CN201120303275U CN202213546U CN 202213546 U CN202213546 U CN 202213546U CN 2011203032754 U CN2011203032754 U CN 2011203032754U CN 201120303275 U CN201120303275 U CN 201120303275U CN 202213546 U CN202213546 U CN 202213546U
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Abstract
The utility model provides an engine fault code display system, including the vehicle instrument, the power module to the vehicle instrument power supply, CAN bus communication controller and CAN transceiver module, the vehicle instrument includes CPU, fault code storage module and the communication control module of being connected with CPU respectively, the signal output part of communication control module is connected with the signal transmission module that CAN send engine fault code request message, signal transmission module passes through CAN bus communication controller and connects CAN transceiver module, CAN transceiver module is connected with the engine ECU that CAN respond to engine fault code request message, the signal input part of communication control module still is connected with the signal receiving module that CAN accept engine fault code response message, signal receiving module also passes through CAN bus communication controller and connects CAN transceiver module, the display signal port of communication control module is connected with the display. The utility model discloses information can show automobile engine's fault code in real time, has improved engine fault's maintenance efficiency by a wide margin.
Description
Technical field
The utility model relates to a kind of vehicle electronics accessory, specifically a kind of engine breakdown code display system.
Background technology
At present; The ECU of automotive engine (Electronic Control Unit electronic control unit) receives the restriction of CAN (Controller Area Network, controller local area network) agreement, can not directly give vehicular meter through CAN bus broadcast failure code information on the software; Can only give vehicular meter Broadcast Fault lamp information; After user and maintainer see that not under command light is lighted, can only reach the services and repairs station to car, inquire about concrete failure code through the separate diagnostic appearance; And then, come maintenance vehicle according to the guide of failure code.Aforesaid way makes the maintenance efficiency of automotive engine fault reduce, and the maintenance real-time is poor, has delayed a large amount of engine maintenance time.
Summary of the invention
The purpose of the utility model is to above-mentioned deficiency a kind of engine breakdown code display system that can improve the automotive engine maintenance efficiency to be provided, and uses this system can make the maintenance of automotive engine have stronger real-time.
The utility model be achieved in that it comprise vehicular meter, to power module, CAN bus communication controller and the CAN transceiver module of vehicular meter power supply; Wherein, Vehicular meter comprises CPU (Central Processing Unit; Central process unit), respectively with CPU bonded assembly failure code memory module and communication control module; The signal output part of said communication control module is connected with the signal transmitting module that can send engine breakdown code request message; Said signal transmitting module connects the CAN transceiver module through CAN bus communication controller, and said CAN transceiver module is connected with the Engine ECU of ability responding engine failure code request message, and the signal input part of said communication control module also is connected with the signal receiving module that can accept engine breakdown code response message; Said signal receiving module also connects the CAN transceiver module through CAN bus communication controller, and the shows signal port of said communication control module is connected with telltale.
Said CPU also is connected with clock module.
Also be connected with photoelectric isolation module between said CAN bus communication controller and the CAN transceiver module.
Said telltale is a LCD display.
The utility model is through being provided with the signal transmitting module that can send engine breakdown code request message, Engine ECU, the signal receiving module that can accept engine breakdown code response message, failure code memory module and the LCD display of ability responding engine failure code request message; Make on the LCD display display automobile breakdown in the motor code in real time, significantly improved the maintenance efficiency of engine breakdown.
Description of drawings
Fig. 1 is the functional block diagram of the utility model.
The specific embodiment
Further specify the utility model below in conjunction with accompanying drawing and embodiment.
Embodiment: as shown in Figure 1; Comprise vehicular meter, to power module, CAN bus communication controller and the CAN transceiver module of vehicular meter power supply; Wherein, Vehicular meter comprise CPU, respectively with CPU bonded assembly failure code memory module and communication control module; The signal output part of communication control module is connected with the signal transmitting module that can send engine breakdown code request message, and this signal transmitting module connects the CAN transceiver module through CAN bus communication controller, and the CAN transceiver module is connected with the Engine ECU of ability responding engine failure code request message; The signal input part of communication control module also is connected with the signal receiving module that can accept engine breakdown code response message; Signal receiving module also connects the CAN transceiver module through CAN bus communication controller, and the shows signal port of communication control module is connected with LCD display, promptly becomes the utility model.
In the technique scheme, CPU also is connected with clock module.Also be connected with photoelectric isolation module between CAN bus communication controller and the CAN transceiver module.
The principle of work of the utility model is: according to Engine ECU software dependent program and relevant communications protocol, in CPU, define needed command message that on the CAN bus, sends of vehicular meter and pitch time; Define the handshake message order and the pitch time of Engine ECU and CAN bus according to relevant communications protocol; After the car load key powered on, vehicular meter promptly obtained power on signal, and vehicular meter is set up Handshake Protocol with ECU immediately, then through the signal transmitting module timed sending engine breakdown code request message " ReadDTC " by CPU control; Engine ECU is after setting up carrying out shake communication with vehicular meter; In time, is engraved in and waiting for the transmission message; In case after receiving " ReadDTC " message of instrument; Transfer DTC (Diagnostic Trouble Code failure code) among the FCM (Fault Code Memory diagnostic code memory device) immediately then with corresponding message format, the signal receiving module of vehicular meter is given in response; After the signal receiving module of vehicular meter receives response message; According to corresponding format protocol; Extract diagnostic code numerical value; Inquire about corresponding Chinese fault title through CPU to the failure code memory module then, should Chinese fault title show at last, promptly accomplish the demonstration of whole engine breakdown code through LCD display.
Claims (5)
1. engine breakdown code display system; It is characterized in that: it comprises vehicular meter, to power module, CAN bus communication controller and the CAN transceiver module of vehicular meter power supply; Wherein, Vehicular meter comprise CPU, respectively with CPU bonded assembly failure code memory module and communication control module; The signal output part of said communication control module is connected with the signal transmitting module that can send engine breakdown code request message; Said signal transmitting module connects the CAN transceiver module through CAN bus communication controller, and said CAN transceiver module is connected with the Engine ECU of ability responding engine failure code request message, and the signal input part of said communication control module also is connected with the signal receiving module that can accept engine breakdown code response message; Said signal receiving module also connects the CAN transceiver module through CAN bus communication controller, and the shows signal port of said communication control module is connected with telltale.
2. engine breakdown code display according to claim 1 system, it is characterized in that: said CPU also is connected with clock module.
3. engine breakdown code display according to claim 1 and 2 system is characterized in that: also be connected with photoelectric isolation module between said CAN bus communication controller and the CAN transceiver module.
4. engine breakdown code display according to claim 1 and 2 system, it is characterized in that: said telltale is a LCD display.
5. engine breakdown code display according to claim 3 system, it is characterized in that: said telltale is a LCD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203032754U CN202213546U (en) | 2011-08-19 | 2011-08-19 | Engine fault code display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203032754U CN202213546U (en) | 2011-08-19 | 2011-08-19 | Engine fault code display system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202213546U true CN202213546U (en) | 2012-05-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203032754U Expired - Fee Related CN202213546U (en) | 2011-08-19 | 2011-08-19 | Engine fault code display system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202213546U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749901A (en) * | 2012-06-29 | 2012-10-24 | 惠州市德赛西威汽车电子有限公司 | Intelligent isolation method of bus device |
| CN103546297A (en) * | 2012-07-16 | 2014-01-29 | 长春工业大学 | CAN (controller area network) bus repeater for mining |
| CN104184796A (en) * | 2014-07-22 | 2014-12-03 | 惠州市德赛西威汽车电子有限公司 | Signal isolation method and device based on LIN bus |
| CN104515682A (en) * | 2013-09-27 | 2015-04-15 | 贵州詹阳动力重工有限公司 | Electrically controlled engine fault code reading method and device |
-
2011
- 2011-08-19 CN CN2011203032754U patent/CN202213546U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102749901A (en) * | 2012-06-29 | 2012-10-24 | 惠州市德赛西威汽车电子有限公司 | Intelligent isolation method of bus device |
| CN102749901B (en) * | 2012-06-29 | 2014-10-15 | 惠州市德赛西威汽车电子有限公司 | Intelligent isolation method of bus device |
| CN103546297A (en) * | 2012-07-16 | 2014-01-29 | 长春工业大学 | CAN (controller area network) bus repeater for mining |
| CN104515682A (en) * | 2013-09-27 | 2015-04-15 | 贵州詹阳动力重工有限公司 | Electrically controlled engine fault code reading method and device |
| CN104184796A (en) * | 2014-07-22 | 2014-12-03 | 惠州市德赛西威汽车电子有限公司 | Signal isolation method and device based on LIN bus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20130819 |