CN204188639U - A kind of car speed harvester realizing CAN and export - Google Patents
A kind of car speed harvester realizing CAN and export Download PDFInfo
- Publication number
- CN204188639U CN204188639U CN201420699797.4U CN201420699797U CN204188639U CN 204188639 U CN204188639 U CN 204188639U CN 201420699797 U CN201420699797 U CN 201420699797U CN 204188639 U CN204188639 U CN 204188639U
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- speed
- export
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- vehicle
- interface
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Abstract
The utility model is a kind of car speed harvester realizing CAN and export, it comprises an impulse speed testing circuit, a CAN interface circuit and a processor, the pulse signal of the wheel speed sensors of vehicle or abs sensor can be converted to stabilization signal and be transferred to processor by impulse speed testing circuit, be converted to speed data by processor, then export on CAN interface according to certain CAN protocol.The in-vehicle information apparatus fundamentally solved on rear dress market obtains the problem that vehicle speed data will take into account various interface.
Description
Technical field
The utility model relates to a kind of car speed harvester realizing CAN and export, and the pulse signal be mainly used in vehicle wheel speed sensor or abs sensor export converts speed data to, and carries out data output by CAN interface.
Background technology
At present, the inter-vehicle information system of various rear dress emerges in an endless stream.Much need the various speed datas obtaining vehicle, its medium velocity is very important vehicle data.For the CAN communication mode that vehicle generally adopts, the speed data of most vehicle can both be understood in CAN protocol, as long as therefore inter-vehicle information system connects vehicle CAN bus, just can acquisition speed data, but Some vehicles does not have CAN or cannot from acquisition speed information CAN.In order to address this problem, infosystem compatible multiple interfaces of having to carrys out acquisition speed information or with the mode acquisition speed data forming different editions.
Utility model content
Technical problem to be solved in the utility model is, provides a kind of car speed harvester realizing CAN and export, and the pulse signal of original wheel speed sensors or abs sensor can be converted to the rate signal that CAN exports.
In order to solve the problems of the technologies described above, the utility model have employed following technical scheme.
A kind of car speed harvester realizing CAN and export, comprising processor, it is characterized in that: also comprising the impulse speed testing circuit for being connected with vehicle wheel speed sensor or vehicle ABS sensor and the CAN interface circuit for being connected with the CAN interface of external unit; Wherein impulse speed testing circuit is connected with processor respectively with CAN interface circuit.
The pulse signal of wheel speed sensors or abs sensor is converted into stable square wave by impulse speed testing circuit, converts speed data to by processor, then described speed data is exported by CAN interface circuit.
Good effect of the present utility model is:
When the car speed harvester exported by this CAN is applied to various inter-vehicle information system, only need consider that a kind of mode of CAN interface carrys out acquisition speed signal.For do not have CAN or can not on CAN interface the vehicle of acquisition speed data, only need install this device additional, and not need to be designed to two versions, also not need to take into account various interface, therefore reduce the complexity of product design.The utility model in-vehicle information apparatus thoroughly solved on rear dress market obtains the problem that vehicle speed data will take into account various interface.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure principle chart of the utility model impulse speed testing circuit.
Embodiment
The utility model is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model comprises processor 1, for the impulse speed testing circuit 3 that is connected with vehicle wheel speed sensor or vehicle ABS sensor and the CAN interface circuit 2 for being connected with the CAN interface of external unit.Wherein impulse speed testing circuit 3 is connected with processor 1 respectively with CAN interface circuit 2.
Impulse speed testing circuit 3 is as shown in Figure 2 a kind of electronic circuits, the various pulse signals that wheel speed sensors or abs sensor export can be converted to the pulse signal of standard amplitude, output to processor 1.
Described CAN interface circuit 2 is the electronic circuits meeting CAN line related request, can connect, carry out data communication by certain agreement with the CAN line circuit meeting same standard.
The full sized pules signal that impulse speed testing circuit 3 can export by described processor 1 changes speed data into, according to certain CAN protocol form, outputs to external unit by CAN interface circuit 2.
The pulse signal of wheel speed sensors or abs sensor is converted into stable square wave by impulse speed testing circuit 3, converts speed data to by processor 1, then described speed data is exported by CAN interface circuit 2.
Claims (2)
1. the car speed harvester realizing CAN and export, comprising processor (1), it is characterized in that: also comprising the impulse speed testing circuit (3) for being connected with vehicle wheel speed sensor or vehicle ABS sensor and the CAN interface circuit (2) for being connected with the CAN interface of external unit; Wherein impulse speed testing circuit (3) is connected with processor (1) respectively with CAN interface circuit (2).
2. the car speed harvester realizing CAN and export according to claim 1, it is characterized in that: the pulse signal of wheel speed sensors or abs sensor is converted into stable square wave by impulse speed testing circuit (3), convert speed data to by processor (1), then by CAN interface circuit (2), described speed data is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699797.4U CN204188639U (en) | 2014-11-20 | 2014-11-20 | A kind of car speed harvester realizing CAN and export |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420699797.4U CN204188639U (en) | 2014-11-20 | 2014-11-20 | A kind of car speed harvester realizing CAN and export |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204188639U true CN204188639U (en) | 2015-03-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420699797.4U Expired - Fee Related CN204188639U (en) | 2014-11-20 | 2014-11-20 | A kind of car speed harvester realizing CAN and export |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204188639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116162A (en) * | 2015-09-30 | 2015-12-02 | 成都奥利斯机电有限公司 | Vehicle speed acquisition apparatus |
-
2014
- 2014-11-20 CN CN201420699797.4U patent/CN204188639U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116162A (en) * | 2015-09-30 | 2015-12-02 | 成都奥利斯机电有限公司 | Vehicle speed acquisition apparatus |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20171120 |