CN202798768U - Intelligent controller area network (CAN) tester - Google Patents
Intelligent controller area network (CAN) tester Download PDFInfo
- Publication number
- CN202798768U CN202798768U CN 201220424793 CN201220424793U CN202798768U CN 202798768 U CN202798768 U CN 202798768U CN 201220424793 CN201220424793 CN 201220424793 CN 201220424793 U CN201220424793 U CN 201220424793U CN 202798768 U CN202798768 U CN 202798768U
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- controller
- level
- tester
- isolation module
- photoelectric isolation
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Abstract
The utility model discloses an intelligent controller area network (CAN) tester which comprises a first CAN communication port, a first-level CAN controller, a CAN transceiver connected with the first-level CAN controller and a universal serial bus (USB)/CAN converter connected with the CAN transceiver. The intelligent CAN tester is characterized by further comprising a photoelectric isolation module and a terminal resistor selector, wherein the first CAN communication port is connected with the photoelectric isolation module connected with the first-level CAN controller, and the terminal resistor selector is arranged between the first-level CAN controller and the photoelectric isolation module. The intelligent CAN tester is capable of detecting two ways of devices simultaneously and improving detection efficiency, remarkably improves signal interference resistor by arranging the photoelectric isolation module, is capable of automatically replacing a resistor according to different devices to be detected by means of the terminal resistor selector and is capable of selectively transmitting and receiving signals by means of a second-level CAN controller.
Description
Technical field
The utility model relates to CAN-BUS(Controller Area Network-BUS, Controller Area Network BUS technology) the network test technical field, refer to particularly a kind of intelligent CAN (Controller Area Network, controller local area network) tester.
Background technology
At present, the CAN bus has high reliability because of it and good error detection capability comes into one's own, and is widely used in the automotive electronics network, Industry Control and intelligent residential district etc.And the stability of CAN-BUS network and reliability then rely on fully it are diagnosed and tests.Traditional CAN-BUS network diagnosis and testing equipment are connected and composed successively by a CAN communication port, CAN controller, CAN transceiver, USB/CAN transducer.Find in actual the use that this diagnosis and testing equipment have following shortcoming:
1, can only detect a pipeline equipment, detection efficiency is lower;
Signal-to-jamming ratio is more serious when 2, detecting;
3, need manual plus-minus resistance for different detected equipment;
4, signal can not the selectivity transmitting-receiving.
Summary of the invention
The purpose of this utility model is for above-mentioned technical problem, and a kind of intelligent CAN tester is provided.This CAN tester can improve detection efficiency and antinoise signal interference performance, simultaneously need to be for the different manual plus-minus of detected equipment resistance.
For realizing this purpose, the intelligent CAN tester that the utility model is designed, comprise a CAN communication port, one-level CAN controller, the CAN transceiver that is connected with one-level CAN controller, the USB(Universal Serial BUS that is connected with the CAN transceiver, USB)/the CAN transducer, it is characterized in that: it also comprises photoelectric isolation module and terminal resistance selector, wherein, a described CAN communication port connects one-level CAN controller by photoelectric isolation module, also is provided with described terminal resistance selector between described one-level CAN controller and described photoelectric isolation module.
In the technique scheme, it also comprises the 2nd CAN communication port, and described the 2nd CAN communication port also connects one-level CAN controller by connecting photoelectric isolation module.
In the technique scheme, it also comprises secondary CAN controller, and described secondary CAN controller is arranged between one-level CAN controller and the CAN transceiver.
The utility model makes the utility model can detect simultaneously two pipeline equipments by the 2nd CAN communication port is set, and has improved detection efficiency; By photoelectric isolation module is set antinoise signal interference performance of the present utility model is obviously strengthened; By being set, the terminal resistance selector make the utility model automatically change resistance for different detected equipment; By secondary CAN controller is set, so that the utility model can the selectivity receiving and transmitting signal.
Description of drawings
Fig. 1 is structured flowchart of the present utility model;
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments:
Intelligent CAN tester shown in Fig. 1, comprise a CAN communication port, one-level CAN controller, the CAN transceiver that is connected with one-level CAN controller, the USB/CAN transducer that is connected with the CAN transceiver, it also comprises photoelectric isolation module and terminal resistance selector, wherein, a described CAN communication port connects one-level CAN controller by photoelectric isolation module, also is provided with described terminal resistance selector between described one-level CAN controller and described photoelectric isolation module.By the terminal resistance selector, can switching terminal contact resistance whether, make things convenient for the CAN network test of straight line topological structure.
In the technique scheme, it also comprises the 2nd CAN communication port, and described the 2nd CAN communication port also connects one-level CAN controller by connecting photoelectric isolation module.The utility model is avoided the damage owing to ground circulation, the reliability that the enhancing system uses by connecting photoelectric isolation module at input in adverse circumstances.In addition, two-way CAN communication interface can connect different CAN-BUS networks simultaneously, than existing single channel CAN communication interface, has improved greatly the testing efficiency of CAN-BUS network.
In the technique scheme, it also comprises secondary CAN controller, and described secondary CAN controller is arranged between one-level CAN controller and the CAN transceiver.Two-stage CAN controller can arrange and accepts filter, and only accepts the frame data of appointment, and the diagnostic method of convenience and high-efficiency is provided for the diagnosis of the CAN-BUS under the complex situations.
When the utility model used, the USB/CAN transducer connected computer by USB cable.The one CAN communication port connects detected equipment with the 2nd CAN communication port.
The content that this specification is not described in detail belongs to the known prior art of this area professional and technical personnel.
Claims (3)
1. intelligent CAN tester, comprise a CAN communication port, one-level CAN controller, the CAN transceiver that is connected with one-level CAN controller, the USB/CAN transducer that is connected with the CAN transceiver, it is characterized in that: it also comprises photoelectric isolation module and terminal resistance selector, wherein, a described CAN communication port connects one-level CAN controller by photoelectric isolation module, also is provided with described terminal resistance selector between described one-level CAN controller and described photoelectric isolation module.
2. intelligent CAN tester according to claim 1, it is characterized in that: it also comprises the 2nd CAN communication port, described the 2nd CAN communication port also connects one-level CAN controller by connecting photoelectric isolation module.
3. intelligent CAN tester according to claim 1 and 2, it is characterized in that: it also comprises secondary CAN controller, described secondary CAN controller is arranged between one-level CAN controller and the CAN transceiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424793 CN202798768U (en) | 2012-08-24 | 2012-08-24 | Intelligent controller area network (CAN) tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220424793 CN202798768U (en) | 2012-08-24 | 2012-08-24 | Intelligent controller area network (CAN) tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202798768U true CN202798768U (en) | 2013-03-13 |
Family
ID=47825937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220424793 Expired - Fee Related CN202798768U (en) | 2012-08-24 | 2012-08-24 | Intelligent controller area network (CAN) tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202798768U (en) |
-
2012
- 2012-08-24 CN CN 201220424793 patent/CN202798768U/en not_active Expired - Fee Related
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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: 20130313 Termination date: 20150824 |
|
| EXPY | Termination of patent right or utility model |