CN201177903Y - Experimental device for teaching of automobile CAN bus system - Google Patents
Experimental device for teaching of automobile CAN bus system Download PDFInfo
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- CN201177903Y CN201177903Y CNU2007200986548U CN200720098654U CN201177903Y CN 201177903 Y CN201177903 Y CN 201177903Y CN U2007200986548 U CNU2007200986548 U CN U2007200986548U CN 200720098654 U CN200720098654 U CN 200720098654U CN 201177903 Y CN201177903 Y CN 201177903Y
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Abstract
The utility model discloses a teaching experimental apparatus of an automotive CAN bus system, in particular to a practice experimental apparatus, the teaching content of which relates to the structure composition, the working principle, the fault diagnosis, the system detection and the system maintenance of the automotive CAN bus system. The automotive CAN bus system mainly comprises a controller, a sensor, an actuator, a diagnostic interface, a panel assembly, an ignition switch, etc., wherein, the controller, the sensor and the actuator participate in the CAN data exchange. The teaching experimental apparatus is characterized in that the experimental apparatus is composed of an assembly unit (1) which contains all real parts of an automotive CAN system; the parts of the automotive CAN system are positioned according to a real vehicle, and are intensively fixed on a panel; and the panel is fixed on a box body (2). A bracket (3) is designed and manufactured on the lower side of the box body, a wheel (4) with a self-lock installation is arranged at the bottom part of the bracket (3), the box body (2) and the bracket (3) adopt a movable connection; the experiment facility can lie flat, and also can stand, thereby facilitating the teaching process.
Description
Technical field
Transmission of knowledge that the experiment device for teaching of the utility model vehicle CAN bus system, affiliated technical field are communications and transportation--automotive operation and service engineering--.Structure composition, principle of work, fault diagnosis, system that it relates to automobile mounted CAN bus system detect a kind of teaching, training practice experimental provision of safeguarding.Especially can arbitrarily be provided with and remove the various faults of vehicle CAN bus system, " recurrence of failure " is provided repeatedly, reach and to reuse the also purpose of wide-scale distribution new technology, new knowledge.
Background technology
Automotive electronic technology development is very swift and violent, and CAN bus and multiline message transmission technology are widely used in automobile manufacturing field, and along with the increase of its output, the price of CAN bus unit is also in continuous reduction, oriented in, the trend of low-grade automobile covering.As the POLO car that the Shanghai masses are produced, its price Renminbi is only surplus in the of 110,000 yuan, and the power system of this vehicle is to adopt the total line traffic control of CAN.The CAN bus is the advanced control technology that is widely used in fields such as auto industry manufacturing, the control of manufacturing industry streamline, industrial process control and robot, relevant knowledge relates to very wide also very dark, even some vocabulary of company, as: identifier, cyclic redundancy, data frame structure, bus arbitration, bus addressing etc. all are stranger for the automobile services industry.In auto repair service and automobile vocational education, not necessarily need to grasp all knowledge of CAN bus comprehensively.Understanding the structure of CAN bus forms, the principle of work of understanding the CAN bus system is just passable, in auto repair service industry and automobile vocational education, the emphasis GPRS be fault analysis, fault diagnosis, system maintenance and maintenance operation main points etc. at vehicle-mounted CAN bus and multistation information transmission system.
Current, the engineering technical personnel that comprehensively grasp automobile CAN-bus structural principle, the course of work and fault diagnosis maintenance technology in the automobile services industry lack in a large number, and work organizes grade of skill evaluation and technical examination also to be difficult to relate to these aspects with traffic department comprehensively.Because it is with high content of technology, system architecture is complicated, in the training of traffic specialty vocational education, also be difficult to relate to this field.On the other hand, the electric signal of directly gathering the CAN bus system on automobile is difficulty relatively also, will destroy some protective devices on the automobile toward contact, as when carrying out waveform testing, needs to use the threading apparatus lead that punctures; When using multimeter test Dynamic Signal, the marine glue that often need choose the bundle connector that bursts at the seams blocks up and just can collect signal, these all are easy to destroy water proofing property, dust tightness, leakproofness and the anti-interference of automobile reason, particularly the CAN bus system is very responsive to disturbing, have slightly not very in the operation, just the data transmission quality of CAN be might influence, and then the power performance and the rideability of car load influenced.
Summary of the invention
At the problems referred to above, the invention provides the experiment device for teaching of a cover vehicle CAN bus system.This device is that the whole component assembly material objects by the vehicle-mounted CAN system constitute, and comprises that all participate in formations such as controller, twisted-pair feeder, sensor and the actuator of CAN exchanges data, diagnose interface, instrument assembly, ignition switch.These whole automobile components that participate in the CAN exchanges data are put by the real vehicle position, concentrate and be fixed on the panel, the panel blueprint drawing, the installation testing terminal is used for direct Measurement Network communication electric signal on the circuit diagram, the connecting circuit of calibrating terminal back is connected to each controller according to the real vehicle terminal position, makes the CAN system can operate as normal and swap data.Panel is fixed on the casing.
Below casing, design and produce a support, the horn ring of the bottom mounting strap self-locking device of support, casing is movable with being connected of support, can horizontal, convenient teaching also can erect.A miniature motor is installed below the casing, automobile ignition switch is connected with electric electromechanics, the motor drives automobile current generator also drives the crankshaft position sensor and the CMPS Camshaft Position Sensor of automobile simultaneously, so that determine correct ignition timing and injection timing.
After the said apparatus installation, start automobile ignition switch, vehicle CAN bus system just can be worked.The fault setting then is by fault switch, computing machine and telepilot to be set to realize the opening circuit of the high position of CAN system, low level, shorted to earth and short circuit etc. each other, also can use automobile fault diagnostic apparatus to revise each coding of controls.
Specific constructive form such as accompanying drawing:
Description of drawings
Fig. 1 is the experiment device for teaching structural drawing of vehicle CAN bus system; Fig. 2 is the network structure of vehicle CAN bus system and the synoptic diagram that open circuit fault takes place; Fig. 3 is the network structure of vehicle CAN bus system and the synoptic diagram that the signal attenuation fault takes place.
1. be whole component assembly material objects of vehicle-mounted CAN system;
2. be the casing of fixed panel;
3. be the support of experimental provision;
4. be the horn ring of band self-locking device;
5. be a small-sized motor;
6. be motor car engine;
7. fault is provided with box;
8. be that manual fault is provided with panel;
9. be that fault is provided with telepilot;
10. be fault setting and diagnosis computer;
11. be engine controller;
12. be abs controller;
13. be automatic transmission controller;
14. be safety air sac controller;
15. be instrument controller;
16. be the webmaster controller;
17. and arrow indication position shows that network system opens circuit, this moment, network system can't communication;
18. and arrow indication position shows that the fault of signal attenuation is taking place at this place, this moment, network system transmission quality limit was poor.
Embodiment
Fault with cover of installation is provided with box 7 and with fault panel is set below support, fault is provided with on the panel installs fault switch 8 is set, fault is provided with switch and adopts circuit to be connected with the CAN system according to former fare road, by stirring the fault that fault is provided with on the panel switch 8 is set, just can realizes that vehicle CAN bus system opens circuit, shorted to earth and the dissimilar faults of short circuit mutually.The form of these faults and classification have multiple, can both cause controller and report an error and the storage failure code.The most common failure that the CAN system takes place in actual use for this and automobile is on all four.
The mode of fault setting also has other dual mode: 1. the 10 long-range settings that use a computer, and the 9 long-range settings that 2. use a teleswitch, to increase disguise that fault is provided with sudden, the enhancing teaching efficiency also provides check function.
By using automobile fault diagnostic apparatus connection diagnostic interface, the fault of " coding of controls mistake " can also be set, these fault types can cause also that controller reports an error and the storage failure code.Use automobile fault diagnostic apparatus again by correct encoding operation, just can eliminate fault.This with changer controller more after in time not do the failure mode that the controller coupling occurred be consistent.
Fault is provided with box 7 and is actually a control module, may command into and out of the connection of circuit, open circuit, the mutual short circuit between shorted to earth and each circuit, by fault switch 8, computing machine 10 or telepilot 9 being set controls, the CAN system failure that takes place on the various faults that just can simulated automotive CAN system, these faults and real vehicle is consistent.After fault takes place, can use automobile fault diagnostic apparatus to connect diagnostics interface and read also analysis of failure code, data stream.Also can use the waveform of the calibrating terminal testing CAN on the oscillograph connecting circuit figure, this moment needn't need be with thorn line device puncture netting twine as when test on real vehicle, directly measurement is just passable on calibrating terminal, and this mode can also be tempered the ability of everybody circuit analysis.Can also use multimeter to read various electric signal, be used for the fault analysis and judgement reason, find out place, real trouble spot from the calibrating terminal on the circuit diagram.
Claims (3)
1. the experiment device for teaching of a vehicle CAN bus system, mainly comprise: controller, sensor and the actuator of all participation CAN exchanges data, diagnose interface, instrument assembly, ignition switch etc., it is characterized in that: these whole automobile components that participate in the CAN exchanges data are put by the real vehicle position, concentrate and be fixed on the panel, the panel blueprint drawing, the installation testing terminal is used for direct Measurement Network communication electric signal on the circuit diagram, and the connecting circuit of calibrating terminal back is connected to each controller according to real vehicle cross-talk position.
2. according to the teaching test device of claim 1 vehicle CAN bus system, it is characterized in that: panel is fixed on the casing (2).
3. according to the teaching test device of claim 1 vehicle CAN bus system, it is characterized in that: below casing, design and produce a support (3), the horn ring (4) of the bottom mounting strap self-locking device of support (3), casing (2) is movable with being connected of support (3), can horizontal, the convenient teaching that also can erect is installed a miniature motor (5) below the casing, automobile ignition switch is connected motor drives automobile current generator (6) with electric electromechanics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200986548U CN201177903Y (en) | 2007-09-27 | 2007-09-27 | Experimental device for teaching of automobile CAN bus system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200986548U CN201177903Y (en) | 2007-09-27 | 2007-09-27 | Experimental device for teaching of automobile CAN bus system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177903Y true CN201177903Y (en) | 2009-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200986548U Expired - Fee Related CN201177903Y (en) | 2007-09-27 | 2007-09-27 | Experimental device for teaching of automobile CAN bus system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177903Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464437A (en) * | 2014-12-30 | 2015-03-25 | 苏州龙联仪器科技有限公司 | Novel power seat system teaching practical training device |
-
2007
- 2007-09-27 CN CNU2007200986548U patent/CN201177903Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464437A (en) * | 2014-12-30 | 2015-03-25 | 苏州龙联仪器科技有限公司 | Novel power seat system teaching practical training device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TIANJIN UNITE INFORMATION TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: TIANJIN UNITE AUTOMOTIVE ELECTRONIC CONTROL TECHNOLOGY SERVICE CO., LTD. Effective date: 20091218 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091218 Address after: Tianjin Huayuan Industrial Zone, Road No. 19, zip code: 300384 Patentee after: Tianjin best information technology Co., Ltd. Address before: Tianjin Huayuan Industrial Zone, Road No. 19, zip code: 300384 Patentee before: Tianjin Younaite Automobile Electronic Control Technology Service Co.Ltd |
|
| C56 | Change in the name or address of the patentee |
Owner name: TIANJIN YUNDUN INFORMATION SECURITY TECHNOLOGY CO. Free format text: FORMER NAME: TIANJIN YOUNATE INFORMATION TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 300384 Tianjin Huayuan Industrial Zone, Road No. 19 Patentee after: Tianjin cloud shield information Safe Technology Ltd Address before: 300384 Tianjin Huayuan Industrial Zone, Road No. 19 Patentee before: Tianjin best information technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20150927 |
|
| EXPY | Termination of patent right or utility model |