CN201307061Y - Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus - Google Patents
Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus Download PDFInfo
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- CN201307061Y CN201307061Y CNU2008201557262U CN200820155726U CN201307061Y CN 201307061 Y CN201307061 Y CN 201307061Y CN U2008201557262 U CNU2008201557262 U CN U2008201557262U CN 200820155726 U CN200820155726 U CN 200820155726U CN 201307061 Y CN201307061 Y CN 201307061Y
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Abstract
A diagnosis and processing device of load failure of automotive electric equipment based on a CAN bus is connected with a plurality of automotive electric equipment loads and a plurality of operating switches used for controlling the power on and power off of the automotive electric equipment loads; and the operating switches corresponds to the automotive electric equipment loads respectively. The diagnosis and processing device comprises a main control module, a plurality of power drive modules and a plurality of automotive electric equipment loads; the power drive modules and the automotive electric equipment loads are corresponding to the automotive electric equipment loads respectively; the main control module is connected with the CAN bus, the input end of each power drive end, and each operating switch; the output end of each power drive module is connected with each automotive electric equipment load; the input end of each load electrical parameter detection module is connected with the output end of each power drive module; and the output end of each load electrical parameter detection module is connected with the main control module. When load failure occurs, the main control module stops outputting current to the loads, and in this way, the damage of the short circuit failure to the loads can be avoided before the failure is solved.
Description
Technical field
The utility model relates to a kind of car electrics load faulty diagnostic process device based on the CAN bus.
Background technology
At present, adopt the CAN bussing technique that the diagnosing malfunction of car electrics is obtained promoting in automobile industry.But the CAN bussing technique of China is still immature, only can indicate the fault of auto electric equipment, and can't this fault be handled timely and effectively, thereby bring hidden danger to safe driving, also brings inconvenience to maintenance job simultaneously.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of car electrics load faulty diagnostic process device based on the CAN bus, and it can carry out real-time diagnosis and processing to the fault of car electrics load.
The technical scheme that the utility model adopted is: a kind of car electrics load faulty diagnostic process device based on the CAN bus, link to each other with several car electrics loads several operating switchs with energising that is used for the Control of Automobile electric appliance load and outage, several car electrics loads of these several operating switchs and this are corresponding one by one, be characterized in, car electrics load faulty diagnostic process device comprise a main control module, with corresponding one by one several power driver modules of several car electrics loads and several load electrical parameters detection modules; The main control module links to each other with input end and each operating switch of CAN bus, each power driver module respectively; The output terminal of each power driver module links to each other with each car electrics load respectively; The input end of each load electrical parameters detection module links to each other with the output terminal of each power driver module respectively, and output terminal links to each other with the main control module.
After adopting technique scheme, when the car electrics load was broken down, the main control module can stop output current and give load, can just avoid the electronic circuit of short trouble to the damage and the protection load of load like this before fault does not have to remove.Simultaneously, the main control module can also produce corresponding failure message, makes human pilot can obtain the fault prompting in time, makes corresponding processing.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the theory diagram of the controlling sub of main control module of the present utility model.
Embodiment
Fig. 1 shows theory diagram of the present utility model.As shown in the figure, car electrics load faulty diagnostic process device 100 of the present utility model and several car electrics loads 41, ... 4n and several operating switchs K1 that is used for the energising and the outage of Control of Automobile electric appliance load, ... Kn links to each other, and several above-mentioned operating switchs are corresponding one by one with several above-mentioned car electrics loads.This car electrics load faulty diagnostic process device 100 comprise a main control module 1, with several car electrics loads 41, ... 4n one corresponding several power driver modules 21, ... 2n and several load electrical parameters detection modules 31 ... 3n (n is a positive integer).Main control module 1 links to each other with input end and each operating switch of CAN bus, each power driver module respectively.The output terminal of each power driver module links to each other with each car electrics load respectively.The input end of each load electrical parameters detection module links to each other with the output terminal of each power driver module respectively, and output terminal links to each other with main control module 1, is used to detect the magnitude of voltage or the current value of load.
Above-mentioned several car electrics loads comprise car light, motor or the like, can design the different electrical quantitys that will detect at different car electrics loads.For example, for steering indicating light, brake lamp, it is not to keep opening all the time in the vehicle operating process, can judge whether to take place open circuit fault by the magnitude of voltage that detects it.
In the utility model, main control module 1 is MCU, and power driver module can adopt power semiconductor or relay.
Claims (3)
1. car electrics load faulty diagnostic process device based on the CAN bus, link to each other with several car electrics loads several operating switchs with energising that is used for the Control of Automobile electric appliance load and outage, described several operating switchs are corresponding one by one with described several car electrics loads, it is characterized in that: described car electrics load faulty diagnostic process device comprise a main control module, with corresponding one by one several power driver modules of described several car electrics loads and several load electrical parameters detection modules; Described main control module links to each other with input end and each described operating switch of CAN bus, each described power driver module respectively; The output terminal of each power driver module links to each other with each car electrics load respectively; The input end of each load electrical parameters detection module links to each other with the output terminal of each power driver module respectively, and output terminal links to each other with described main control module.
2. the car electrics load faulty diagnostic process device based on the CAN bus as claimed in claim 1, it is characterized in that, described main control module comprises and corresponding one by one several controlling sub of described several car electrics loads that each described controlling sub comprises control module, comparing unit, load electrical quantity threshold setting unit, failure message generation unit and driver element; Wherein:
Load electrical quantity threshold setting unit links to each other with described comparing unit, is used to set and store the electrical quantity threshold value of car electrics load;
Comparing unit, link to each other with the output terminal of corresponding load electrical parameters detection module, be used for the electrical parameters detection value of load electrical parameters detection module output is compared with the electrical quantity threshold value that is arranged on the load current threshold setup unit, and comparative result is sent to described control module;
Driver element; Link to each other with the input end of corresponding power driver module, be used to drive this power driver module;
Control module links to each other with described driver element and corresponding operating switch;
The failure message generation unit, input end links to each other with described control module, and output terminal links to each other with the CAN bus.
3. the car electrics load faulty diagnostic process device based on the CAN bus as claimed in claim 1 or 2 is characterized in that described main control module is MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201557262U CN201307061Y (en) | 2008-11-21 | 2008-11-21 | Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201557262U CN201307061Y (en) | 2008-11-21 | 2008-11-21 | Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201307061Y true CN201307061Y (en) | 2009-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201557262U Expired - Fee Related CN201307061Y (en) | 2008-11-21 | 2008-11-21 | Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201307061Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539893A (en) * | 2012-01-11 | 2012-07-04 | 重庆长安汽车股份有限公司 | Fault detecting method for output driving load of whole automobile controller and whole automobile controller |
| CN104423379A (en) * | 2013-09-09 | 2015-03-18 | 英飞凌科技股份有限公司 | Systems and methods for internal and external error detection in sensor output interfaces |
| CN110456773A (en) * | 2019-08-14 | 2019-11-15 | 东风商用车有限公司 | A kind of setting method of load current fault threshold |
-
2008
- 2008-11-21 CN CNU2008201557262U patent/CN201307061Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539893A (en) * | 2012-01-11 | 2012-07-04 | 重庆长安汽车股份有限公司 | Fault detecting method for output driving load of whole automobile controller and whole automobile controller |
| CN102539893B (en) * | 2012-01-11 | 2014-09-03 | 重庆长安汽车股份有限公司 | Fault detecting method for output driving load of whole automobile controller and whole automobile controller |
| CN104423379A (en) * | 2013-09-09 | 2015-03-18 | 英飞凌科技股份有限公司 | Systems and methods for internal and external error detection in sensor output interfaces |
| US9846191B2 (en) | 2013-09-09 | 2017-12-19 | Infineon Technologies Ag | Systems and methods for internal and external error detection in sensor output interfaces |
| CN110456773A (en) * | 2019-08-14 | 2019-11-15 | 东风商用车有限公司 | A kind of setting method of load current fault threshold |
| CN110456773B (en) * | 2019-08-14 | 2020-08-04 | 东风商用车有限公司 | Method for setting fault threshold of load current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20151121 |