CN103747167A - System and method for automatically matching vehicle camera with processing unit - Google Patents
System and method for automatically matching vehicle camera with processing unit Download PDFInfo
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- CN103747167A CN103747167A CN201310737372.8A CN201310737372A CN103747167A CN 103747167 A CN103747167 A CN 103747167A CN 201310737372 A CN201310737372 A CN 201310737372A CN 103747167 A CN103747167 A CN 103747167A
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Abstract
The invention provides a system and a method for automatically matching a vehicle camera with a processing unit. A power line, a power ground line, a video signal line, and a video ground line are connected between the camera and the processing unit. The system is characterized in that a microprocessor is disposed in the camera and stores model and parameter information of the camera, that the video ground line is used as a single-line bidirectional communication line between the camera and the processing unit, that microprocessor disposed in the camera provides a single-line bidirectional communication interface, and that the power ground line and the video ground line are merged into one line. According to the system, by arranging the microprocessor in the vehicle camera, storing the model and parameter information of the camera in the microprocessor, and arranging the single-line bidirectional communication line to perform bidirectional communication and storage between the camera and the processing unit, the automatic matching between the vehicle camera and the processing unit is achieved.
Description
Technical field
The present invention relates to video acquisition unit and signaling control unit wired connection and control technology field, be specifically related to a kind of Cam for automobile and processing unit automatic patching system and method.
Background technology
At present, camera is connected by power line, power ground, video signal cable, four lines of video ground wire with processing unit, there is no two-way data communication circuit between camera and processing unit.
The method adopting during traditional camera and processing unit coupling is artificially on each camera to stick a unique numbering, sets up the table of comparisons of the information such as the numbering of each camera and corresponding camera model, parameter simultaneously in processing unit.When needs are used, the numbering on artificial input camera, to processing unit, makes processing unit and corresponding camera complete the process of coupling.This kind of method needs repeatedly manually to participate in flow process, reduced the reliability of system, and flow process is more complicated, is not easy operation.
Summary of the invention
The invention provides the system and method for a kind of Cam for automobile and processing unit Auto-matching, solved the technical problem of Cam for automobile and processing unit Auto-matching.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
One aspect of the present invention provides a kind of Cam for automobile and processing unit automatic patching system, is connected with power line, power ground, video signal cable and video ground wire between camera and processing unit, and its key is:
In camera, be provided with microprocessor, the model of described microprocessor stores camera, parameter information;
Mongline two-way communication circuit using described video ground wire between camera and processing unit, the microprocessor arranging in described camera provides mongline two-way communication interface;
Described power ground and video ground wire are merged into same single line.
Further, described processing unit is the vehicle-mounted display system controller of looking around.
The present invention provides a kind of Cam for automobile and processing unit automatic matching method on the other hand, comprising:
Model, the parameter information of the microprocessor stores camera arranging in camera;
The match information corresponding with model, the parameter information of camera is set in processing unit;
Model, the parameter information of processing unit microprocessor stores to described camera by mongline two-way communication circuit carry out read/write operation;
The microprocessor of camera obtains the described match information arranging in processing unit by mongline two-way communication circuit.
The present invention, by microprocessor is set in Cam for automobile, stores model, the parameter information of camera in microprocessor, and mongline two-way communication circuit is set carries out two-way communication and the storage of camera and processing unit, realizes both sides' Auto-matching.
Accompanying drawing explanation
Fig. 1 is the structural representation of the matching system of existing camera and processing unit;
Fig. 2 is the structural representation of Cam for automobile of the present invention and processing unit automatic patching system;
Fig. 3 is the schematic diagram of the data link layer protocol that uses when communicating by letter with Cam for automobile of the processing unit in the present invention;
Fig. 4 is the schematic flow sheet of the method for Cam for automobile of the present invention and processing unit Auto-matching.
Embodiment
Below in conjunction with accompanying drawing, specifically illustrate embodiments of the present invention, accompanying drawing is only for reference and use is described, does not form the restriction to scope of patent protection of the present invention.
The present embodiment relates to senior drive assist system (Advanced Driver Assitance Systems, ADAS).As shown in Figure 1, in the system of mating with processing unit at existing camera, between camera and processing unit, be connected with power line, power ground, video signal cable and video ground wire.As shown in Figure 2, embodiments of the invention provide a kind of Cam for automobile and processing unit automatic patching system, and its key is:
In camera, be provided with Micro-processor MCV, model, the parameter information of described Micro-processor MCV storage camera; In the present embodiment, the model of described Micro-processor MCV is HT68F03C.
Mongline two-way communication circuit using existing described video ground wire between camera and processing unit, the microprocessor arranging in described camera provides mongline two-way communication interface;
Not increasing camera wire harness and determining under the prerequisite of interface form, described power ground and video ground wire are merged into same single line.
In an embodiment of the present invention, by the system of above-mentioned camera and processing unit Auto-matching, can set up the physical layer of camera and processing unit mongline two-way communication before.Multiple cameras and described processing unit two-way communication can be set, thereby realize Auto-matching.
In an embodiment of the present invention, Fig. 3 shows the data link layer protocol that processing unit is used when communicating by letter with camera.In the data link layer protocol shown in Fig. 3:
The default conditions of processing unit end I/O port are output;
The default conditions of camera I/O port are input;
The default conditions of communication line are high level, represent the communication line free time.When there is low level, expression will start to communicate;
1 Byte data communication process is as follows:
Start bit a: logic " 0 " signal, represent the beginning of transmission character, continue the 0.1ms time;
Data bit: bit0～bit7 data of 1 Byte, bit0 is before, and in the end, every bits continues the 0.1ms time to bite7;
Check digit: make data bit (bit0～bit7) logic " 1 " signal number add the logical value of check digit, for " 1 " total number of signal be even number, continue the 0.1ms time;
Position of rest: the flag bit of this Byte DTD, is always " 1 ", continue the 0.1ms time;
Spare bits: be always " 1 ", representing does not have to transmit on online data road.
Just a kind of use-case wherein of the data link layer protocol that above-mentioned processing unit is used when communicating by letter with camera, the protection content of this patent comprises other similar execution modes and extension mode.
In an embodiment of the present invention, described processing unit is the vehicle-mounted display system controller of looking around.After described camera and processing unit Auto-matching, be applied to the vehicle-mounted display system of looking around.
As shown in Figure 4, the present invention provides a kind of Cam for automobile and processing unit automatic matching method on the other hand, comprising: model, the parameter information of the microprocessor stores camera arranging in camera;
The match information corresponding with model, the parameter information of camera is set in processing unit;
Model, the parameter information of processing unit microprocessor stores to described camera by mongline two-way communication circuit carry out read/write operation;
The microprocessor of camera obtains the described match information arranging in processing unit by mongline two-way communication circuit.
Above disclosed is only preferred embodiment of the present invention, can not limit the scope of the present invention with this, and the equivalent variations of therefore doing according to the present patent application the scope of the claims, still belongs to the scope that the present invention is contained.
Claims (3)
1. Cam for automobile and a processing unit automatic patching system, is connected with power line, power ground, video signal cable and video ground wire between camera and processing unit, it is characterized in that:
In camera, be provided with microprocessor, the model of described microprocessor stores camera, parameter information;
Mongline two-way communication circuit using described video ground wire between camera and processing unit, the microprocessor arranging in described camera provides mongline two-way communication interface;
Described power ground and video ground wire are merged into same single line.
2. Cam for automobile according to claim 1 and processing unit automatic patching system, is characterized in that: described processing unit is the vehicle-mounted display system controller of looking around.
3. Cam for automobile and a processing unit automatic matching method, is characterized in that, comprising:
Model, the parameter information of the microprocessor stores camera arranging in camera;
The match information corresponding with model, the parameter information of camera is set in processing unit;
Model, the parameter information of processing unit microprocessor stores to described camera by mongline two-way communication circuit carry out read/write operation;
The microprocessor of camera obtains the described match information arranging in processing unit by mongline two-way communication circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310737372.8A CN103747167B (en) | 2013-12-26 | 2013-12-26 | A kind of Cam for automobile and processing unit automatic patching system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310737372.8A CN103747167B (en) | 2013-12-26 | 2013-12-26 | A kind of Cam for automobile and processing unit automatic patching system and method |
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| Publication Number | Publication Date |
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| CN103747167A true CN103747167A (en) | 2014-04-23 |
| CN103747167B CN103747167B (en) | 2018-03-09 |
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| CN201310737372.8A Expired - Fee Related CN103747167B (en) | 2013-12-26 | 2013-12-26 | A kind of Cam for automobile and processing unit automatic patching system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104038755A (en) * | 2014-04-30 | 2014-09-10 | 惠州华阳通用电子有限公司 | Camera distortion center point testing device and identification method |
| CN114205530A (en) * | 2021-12-23 | 2022-03-18 | 深圳金语科技有限公司 | Self-adaptive control method and system for vehicle-mounted camera module |
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| CN103747167B (en) | 2018-03-09 |
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Granted publication date: 20180309 Termination date: 20191226 |