CN201724670U - Tire trace experiment collection system - Google Patents
Tire trace experiment collection system Download PDFInfo
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- CN201724670U CN201724670U CN2010202440164U CN201020244016U CN201724670U CN 201724670 U CN201724670 U CN 201724670U CN 2010202440164 U CN2010202440164 U CN 2010202440164U CN 201020244016 U CN201020244016 U CN 201020244016U CN 201724670 U CN201724670 U CN 201724670U
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Abstract
The utility model discloses a tire trace experiment collection system, which comprises an analog image collector and a video encoder, a posture sensor, a photoelectric speed sensor and a real-time data collection record memory, wherein the analog image collector is used for collecting the tire trace of an automobile in the experiment process, is arranged on an automobile body of the automobile, and is positioned at the back upper part of an automobile tire, the video encoder is connected with the analog image collector and is used for converting automobile tire trace analog signals collected by the analog image collector into digital signals, the posture sensor is used for collecting the parameters of the heading angle, the pitch angle and the heeling angle of the automobile movement in real time, the photoelectric speed sensor is used for collecting automobile movement speed and acceleration parameters of the automobile in real time, and the real-time data collection record memory is respectively connected with the video encoder, the posture sensor and the photoelectric speed sensor, and is used for processing and storing information collected by the system in real time. The utility model has the advantages of reasonable design, high intelligent degree and complete function, realizes the accurate quantitative analysis of the automobile tire trace image frames, and can be widely applied in automobile tire trace experiment and the relevant research.
Description
Technical field
The utility model belongs to vehicle tyre vestige technical field of measurement and test, especially relates to a kind of tire vestige experiment acquisition system.
Background technology
Traffic hazard total amount in recent years and the casualties and the property loss that are caused are in rising trend.Reappear the generating process of traffic hazard, to the accident genetic analysis with decide that fast, equitably accident responsibility is significant.Accident can stay some accident informations in the scene of the accident after taking place, and accident reconstruction is by analyzing these information judgement accidents are how to take place.The tire vestige is the most important crash analysis foundation in the scene of the accident, therefore analyzes the most common means that the tire vestige just becomes accident treatment.In traditional accident treatment, the traffic police utilizes tape measure directly to measure the tire vestige usually, utilizes vestige length estimation car speed then, and the method is fairly simple, but precision is lower.
At present, in the prior art, take photogrammetric survey method to carry out the test of tire vestige, obtain the characteristics of image of tire vestige; Adopt multichannel collecting instrument collection vehicle attitude parameter (as speed, acceleration, yaw angle, side rake angle, the angle of pitch etc.) to obtain vehicle parameter information.Prior art can only obtain the characteristics of image or the vehicle attitude parameter of experimentation tire vestige separately, but can't obtain the corresponding real-time vehicle athletic posture of tire mark image parameter in the vehicle movement process, promptly be difficult to image parameter and attitude parameter are mated in real time, accurately the tire mark image frame of quantitative analysis vehicle.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of tire vestige experiment acquisition system is proposed, its reasonable in design, intelligent degree height, complete function and result of use are good, realize the real-time coupling of tire mark image parameter and attitude parameter, realized the accurate quantitative analysis of vehicle tyre mark image frame.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of tire vestige experiment acquisition system, it is characterized in that: comprise the analog image collector that is used for gathering vehicle tyre vestige in the experimentation, the analog image collector is installed on the car body and is positioned at the back upper place of doughnut, also comprise and join with the analog image collector and be the video encoder of digital signal the vehicle tyre vestige analog signal conversion that the analog image collector collects, real-time collection vehicle motion yaw angle, the attitude sensor of the angle of pitch and side rake angle parameter, the photo-electric speed pickup of real-time collection vehicle movement velocity and acceleration parameter, respectively with video encoder, attitude sensor and photo-electric speed pickup join, and are used for handling and store car tire mark image information in real time, the vehicle movement yaw angle, the real-time data acquisition record storage of the angle of pitch and side rake angle parameter information and vehicle movement speed and acceleration parameter information.
Described video encoder is a U200 Portable USB bus image acquisition box.
Described attitude sensor is an XW-ADU5600 high-precision attitude orientation integrated navigation system.
The CTM-8C motor vehicle noncontact speed instrument of described photo-electric speed pickup for adopting photovoltaic principals to test the speed.
Described real-time data acquisition record storage is provided with RS232 interface and USB interface.
The utility model compared with prior art has the following advantages:
1, the utility model is primarily aimed at prior art and is difficult to tire mark image parameter and attitude parameter are mated in real time, accurately the deficiency of the tire mark image frame of quantitative analysis vehicle proposes, adopt modularization, integrated design philosophy, not only simple in structure, reasonable in design and use easy and simple to handle.
2, intelligent degree height, the utility model adopt the analog image collector to gather vehicle tyre vestige in the experimentation in real time, and the analog signal conversion of the vehicle that the analog image collector is collected with video encoder is a digital signal; Adopt the real-time collection vehicle motion of attitude sensor yaw angle, the angle of pitch and side rake angle parameter; Adopt real-time collection vehicle speed of photo-electric speed pickup and acceleration parameter; And send the real-time data acquisition record storage to carry out real-time processing and storage the vehicle tyre mark image information, vehicle movement yaw angle, the angle of pitch and the side rake angle parameter information that collect and the vehicle movement speed and acceleration parameter information, be the very high tire vestige experiment acquisition system of intelligent degree.
3, complete function and result of use are good, adopt this utility model when vehicle tyre vestige experiment (as braking, sideslip etc.), tire mark image information in can continuous acquisition vehicle movement process, continuous acquisition obtains and the corresponding real-time vehicle athletic posture of tire mark image parameter simultaneously again, can effectively realize the real-time coupling of tire mark image parameter and attitude parameter, realize the accurate quantitative analysis of vehicle tyre mark image frame.
In sum, the utility model is simple in structure, reasonable in design, complete function, intelligent degree height and result of use are good, use easy and simple to handle, can obtain the tire mark image in the vehicle movement process, can obtain again and the corresponding real-time vehicle athletic posture of tire mark image parameter, realized the accurate quantitative analysis of vehicle tyre mark image frame, can be widely used in experiment of doughnut vestige and the correlative study.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
Fig. 2 is the structured flowchart of U200 Portable USB bus image acquisition box.
Fig. 3 is the structured flowchart of CTM-8C motor vehicle noncontact speed instrument.
Fig. 4 is the principle of work synoptic diagram of CTM-8C motor vehicle noncontact speed instrument.
Description of reference numerals:
1-analog image collector; The 2-video encoder; The 3-attitude sensor;
4-photo-electric speed pickup; 5-real-time data acquisition record storage; The 6-light source;
The 7-illumination beam; 8-pectination photoelectric cell; The 9-folded light beam.
Embodiment
As shown in Figure 1, the utility model comprises the analog image collector 1 that is used for gathering vehicle tyre vestige in the experimentation, analog image collector 1 is installed on the car body and is positioned at the back upper place of doughnut, also comprise and join with analog image collector 1 and be the video encoder 2 of digital signal the vehicle tyre vestige analog signal conversion that analog image collector 1 collects, real-time collection vehicle motion yaw angle, the attitude sensor 3 of the angle of pitch and side rake angle parameter, the photo-electric speed pickup 4 of real-time collection vehicle movement velocity and acceleration parameter, respectively with video encoder 2, attitude sensor 3 and photo-electric speed pickup 4 join, and are used for handling and store car tire mark image information in real time, the vehicle movement yaw angle, the real-time data acquisition record storage 5 of the angle of pitch and side rake angle parameter information and vehicle movement speed and acceleration parameter information.
In the present embodiment, described video encoder 2 is a U200 Portable USB bus image acquisition box.Described attitude sensor 3 is an XW-ADU5600 high-precision attitude orientation integrated navigation system.The CTM-8C motor vehicle noncontact speed instrument of described photo-electric speed pickup 4 for adopting photovoltaic principals to test the speed.Described real-time data acquisition record storage 5 is provided with RS232 interface and USB interface.
As shown in Figure 2, the U200 video encoder is made of USB interface, button, LED lamp, Phone-Out, S-Video, CVBS and six modules of Graphics Processing Unit, the input end of Graphics Processing Unit connects button and S-Video, and output terminal connects USB interface, LED lamp, Phone-Out and CVBS.U200 is based on the colour/black white image A/D switch decoders of USB universal serial bus, need not external power supply, and can be by linking to each other with the usb bus that disposes USB 1.1 or USB2.0 standard.U200 forms the YUV422 digital signal with color video A/D conversion and decoding, and these digital signals are through buffer memory, by usb interface controller, delivers to host memory or makes YUV through main frame and deliver to video memory after the conversion of RGB.When the main frame usb bus is 2.0 editions when gathering 720 * 576 full video in windows, the YUV image of delivering to internal memory can reach 25 frames/s; YUV is converted to the quasi real time demonstration that can reach 25 frames/s when RGB delivers to the main frame video memory again by main frame.When the main frame usb bus is 1.1 editions when gathering 320 * 240 full video in windows, the YUV image of delivering to internal memory can reach 25 frames/s; YUV is converted to the quasi real time demonstration that can reach 25 frames/s when RGB delivers to the main frame video memory again by main frame.
In the present embodiment, described XW-ADU 5600 high-precision attitude orientation integrated navigation systems have adopted the mode of GPS and inertia combination, GPS direction-finding receiver and 3 micromechanical gyros, 3 high-precision accelerometers are integrated, by algorithm GPS and INS are carried out degree of depth fusion, improved the integral body of system and surveyed appearance precision and aligning and the ability of aiming at again.
As shown in Figure 3 and Figure 4, CTM-8C motor vehicle noncontact speed instrument is by photoelectric sensor, braking sensor, the signal processing and amplifying system of joining with photoelectric sensor and braking sensor, the single-chip microcomputer microprocessor system that joins with signal processing and amplifying system, the keyboard and the display that join with the single-chip microcomputer microprocessor system, and constitute by the data acquisition storer seven big modules that the RS-232 bus is connected to the single chip microcomputer disposal system.CTM-8C motor vehicle noncontact speed instrument is installed on the automobile ground of alignment lens light-illuminating (sunny weather can without light-illuminating).During running car, the mixed and disorderly decorative pattern in ground passes through optical system, imaging on photoelectric device, and scanning pectination silicon photocell, after opto-electronic conversion and spatial filtering etc. were handled, photoelectric sensor was exported periodic Random Narrow-Band Signal, the fundamental frequency of this signal is proportional to automobile driving speed, and a segment distance of passing by on the strict corresponding ground of each cycle after pre-service such as band-pass tracking filter filtering and shaping, can obtain the pulse signal that changes with the speed of a motor vehicle.
The course of work of the present utility model is: during experiment, real-time data acquisition record storage 5 at first obtains the speed of vehicle from XW-ADU5600 high-precision attitude orientation integrated navigation system and CTM-8C motor vehicle noncontact speed instrument by the RS232 interface, acceleration and athletic posture yaw angle, the angle of pitch and side rake angle parameter information, U200 Portable USB bus image acquisition box is converted to the tire analog image that collects digital signal and passes to real-time data acquisition record storage 5 by USB interface simultaneously, real-time data acquisition record storage 5 is with the speed that receives, acceleration and athletic posture yaw angle, the angle of pitch and side rake angle parameter information are superimposed upon on the digital image information, and the digital image information after the overlap-add procedure is stored in the storer with video format.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (5)
1. a tire vestige is tested acquisition system, it is characterized in that: comprise the analog image collector (1) that is used for gathering vehicle tyre vestige in the experimentation, analog image collector (1) is installed on the car body and is positioned at the back upper place of doughnut, also comprise and join with analog image collector (1) and be the video encoder (2) of digital signal the vehicle tyre vestige analog signal conversion that analog image collector (1) collects, real-time collection vehicle motion yaw angle, the attitude sensor of the angle of pitch and side rake angle parameter (3), the photo-electric speed pickup (4) of real-time collection vehicle movement velocity and acceleration parameter, respectively with video encoder (2), attitude sensor (3) and photo-electric speed pickup (4) join, and are used for handling and store car tire mark image information in real time, the vehicle movement yaw angle, the real-time data acquisition record storage (5) of the angle of pitch and side rake angle parameter information and vehicle movement speed and acceleration parameter information.
2. according to the described tire vestige experiment of claim 1 acquisition system, it is characterized in that: described video encoder (2) is a U200 Portable USB bus image acquisition box.
3. according to the described tire vestige experiment of claim 1 acquisition system, it is characterized in that: described attitude sensor (3) is an XW-ADU5600 high-precision attitude orientation integrated navigation system.
4. according to the described tire vestige experiment of claim 1 acquisition system, it is characterized in that: the CTM-8C motor vehicle noncontact speed instrument of described photo-electric speed pickup (4) for adopting photovoltaic principals to test the speed.
5. according to the described tire vestige experiment of claim 1 acquisition system, it is characterized in that: described real-time data acquisition record storage (5) is provided with RS232 interface and USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202440164U CN201724670U (en) | 2010-06-30 | 2010-06-30 | Tire trace experiment collection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202440164U CN201724670U (en) | 2010-06-30 | 2010-06-30 | Tire trace experiment collection system |
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| Publication Number | Publication Date |
|---|---|
| CN201724670U true CN201724670U (en) | 2011-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202440164U Expired - Fee Related CN201724670U (en) | 2010-06-30 | 2010-06-30 | Tire trace experiment collection system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677341A (en) * | 2015-01-12 | 2015-06-03 | 张长隆 | Method and system for measuring tyre traces by using single camera |
| CN114283365A (en) * | 2021-12-24 | 2022-04-05 | 智己汽车科技有限公司 | Fishhook test tire liftoff verification method and equipment |
-
2010
- 2010-06-30 CN CN2010202440164U patent/CN201724670U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104677341A (en) * | 2015-01-12 | 2015-06-03 | 张长隆 | Method and system for measuring tyre traces by using single camera |
| CN114283365A (en) * | 2021-12-24 | 2022-04-05 | 智己汽车科技有限公司 | Fishhook test tire liftoff verification method and equipment |
| CN114283365B (en) * | 2021-12-24 | 2024-05-14 | 智己汽车科技有限公司 | Fishhook test tire ground clearance verification method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110126 Termination date: 20110630 |