CN204694476U - Based on the Test System for Automobile Brake Performance calibrating installation of stereoscopic vision - Google Patents
Based on the Test System for Automobile Brake Performance calibrating installation of stereoscopic vision Download PDFInfo
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- CN204694476U CN204694476U CN201520207914.5U CN201520207914U CN204694476U CN 204694476 U CN204694476 U CN 204694476U CN 201520207914 U CN201520207914 U CN 201520207914U CN 204694476 U CN204694476 U CN 204694476U
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- automobile brake
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Abstract
The utility model relates to the Test System for Automobile Brake Performance calibrating installation based on stereoscopic vision, belongs to car consumption credit road examination equipment.This device utilizes 2 camera acquisitions by the light spot image on tabula rasa, adopt computer image processing technology, carry out light spot image process and three dimensional reconstruction, obtain hot spot at the uniform velocity, curvilinear motion track in even acceleration and uniformly retarded motion process, evaluates the precision of the Test System for Automobile Brake Performance based on stereoscopic vision.This device comprises: the guide rails of 2 customizations, 1 configuration by the mobile trolley of tabula rasa, the mobile trolley of 1 configuration red light source, 2 stepper motors, 4 stretching pulleys, 2 photo electric axis scramblers and industrial control computers etc.The utility model can obtain in real time by the movement locus of mobile trolley simulating vehicle braking procedure.This design concept is novel unique, and checking precision is good, and structure is simple, is convenient to installation operation.Achievement in research has good application prospect.
Description
Technical field
The utility model device belongs to the checkout equipment of calibrating auto Function Detection System precision, particularly relates to a kind of calibrating installation of the Test System for Automobile Brake Performance based on stereoscopic vision.Utilize 2 camera acquisitions by the light spot image on tabula rasa, adopt computer image processing technology, carry out light spot image process and three dimensional reconstruction, obtain hot spot at the uniform velocity, movement locus in even acceleration and uniformly retarded motion process, evaluates the precision of the Test System for Automobile Brake Performance based on stereoscopic vision.This device has accuracy of detection and the good feature of system reliability, and this apparatus structure is simple, reasonable in design, and reduces the manufacturing cost of pick-up unit.
Background technology
Braking ability is the important indicator of vehicle operational safety technical conditions, can ensure the traffic safety of road to its detecting and assessing carried out promptly and accurately.The regulation braking ability of road examination method inspection automobile in national standard " automobile safety running technology condition ", evaluation index is the lateral path side-play amount of braking distance, braking deceleration and vehicle.Most widely used equipment such as portable brake analyser can not the stability of quantitative evaluation vehicle, and the braking performance detector therefore worked out based on stereoscopic vision detects the performance parameter of automobile brake perfrmance.This detection system requires to have sufficiently high accuracy and reliability, but when running, the change of surrounding environment, the restriction etc. of maintenance and maintenance levels, causes the stability of automobile braking performance pick-up unit and degree of accuracy to decline.Therefore, operationally there are enough degree of accuracy and good technology status in order to ensure automobile braking performance detection system, need to carry out regular or irregular high-precision calibrating to it.
At present, there is no the device to carrying out calibrating comprehensively based on stereoscopic vision automobile brake perfrmance pick-up unit.
Summary of the invention
The utility model fundamental purpose is the calibrating installation providing a kind of Test System for Automobile Brake Performance, obtains the movement locus of hot spot in motion process.This device is easy for installation, and design philosophy is unique, and checking precision is high.
Above-mentioned purpose of the present utility model realizes by following technical scheme, and accompanying drawings is as follows:
A kind of Test System for Automobile Brake Performance calibrating installation based on stereoscopic vision, this device is primarily of longitudinal motion mechanism, transverse motion mechanism, video camera and industrial control computer composition, described longitudinal motion mechanism is by longitudinal rail 10, configuration is formed by the longitudinal shift type dolly 9 of tabula rasa and longitudinal driving device 8, described transverse motion mechanism is by cross slide way 7, horizontal moving dolly 6 and the lateral driver device 5 of configuration red light source are formed, described longitudinal rail 10 length is 3000-6000mm, width is 300mm, cross slide way length is 2000-4000mm, width is 300mm, and longitudinal rail and cross slide way at right angle setting, described video camera is arranged on the planer-type support 3 at distance cross slide way 7300mm place.
Described vertical and horizontal drive unit is respectively by stepper motor, driver, controller, stretching pulley, roller bearings and photo electric axis scrambler composition, described stepper motor is arranged on driving shaft side, and stepper motor and driving shaft concentric, described driver and controller are arranged on stepper motor fixed support, described stretching pulley is installed on the driving shaft by spline, described roller bearings is connected with roller bearing seat interference fit, be arranged on the two ends of guide rail, with step motor shaft concentric, described photo electric axis scrambler is arranged on the opposite side of driving shaft, and with step motor shaft concentric.
Calibrating installation described in employing carries out the calibration method of the Test System for Automobile Brake Performance based on stereoscopic vision, detects according to the following steps:
Step one, demarcates target to video camera 3 D stereo and carries out the demarcation of same direction;
Step 2, installs longitudinal rail 10 and cross slide way 7, and longitudinal rail 10 is placed in distance planer-type support 3800mm position, and the center line of adjustment longitudinal rail 10 overlaps with driving center line, is fixed on the ground by expansion bolt; Cross slide way 7 is placed in the position of distance planer-type support 3300mm, and center line and the driving central axis of adjustment cross slide way 7, fixed on the ground by expansion bolt;
Step 3, industrial control computer 4 is longitudinal stepper motor 12 and horizontal stepper motor 22 transponder pulse signal respectively, drive longitudinal stepper motor 12 and the output shaft rotation of horizontal stepper motor 22, drive longitudinal shift type dolly 9 to move on cross slide way 7 at longitudinal rail 10 and horizontal moving dolly 6 by vertical, horizontal tensioned lines 15,26;
Step 4, simultaneously industrial control computer 4 controls left video camera pick-up unit 1 and right video camera pick-up unit 2 and takes red light source and beat by the light spot image on tabula rasa, industrial control computer 4 stores light spot image, configuration is by after longitudinal shift type dolly 9 stopping of tabula rasa, the image that the program of industrial control computer 4 inside gathers according to video camera, adopt computer image processing technology, carry out hot spot center of circle three dimensional reconstruction, obtain the longitudinal shift type dolly 9 simulated automotive real time kinematics track in braking procedure of configuration by tabula rasa, to verify the precision of detection system.
Innovation of the present utility model is: (1) adopts hot spot to replace real vehicle, realizes the measurement of movement locus.(2) a set of synchronous drive device is designed.(3) can simulated implementation vehicle left avertence, right avertence lateral path side-play amount.
Technique effect of the present utility model: adopt the utility model can control beginning and ending time and the position of mobile trolley fast, accurately, simply, obtain the movement locus of mobile trolley in real time, evaluate the precision of automobile brake perfrmance whole system.The measuring accuracy of this calibrating installation is high, low cost of manufacture, and install simple, easy to maintenance, its indirect economic effect is very considerable, highly beneficial to the development of vehicle testing line.
Accompanying drawing explanation
Fig. 1 is based on the Test System for Automobile Brake Performance calibrating installation axonometric view schematic diagram of stereoscopic vision.
The detail drawing of Fig. 2 longitudinal driving device (8) axonometric view schematic diagram.
The detail drawing of Fig. 3 lateral driver device (5) axonometric view schematic diagram.
The detail drawing of Fig. 4 longitudinal shift type dolly (9) axonometric view schematic diagram.
Fig. 5 longitudinal shift type dolly (9) axonometric view schematic diagram front end indicates the partial enlarged view of I.
The detail drawing of Fig. 6 horizontal moving dolly (6) axonometric view schematic diagram.
Fig. 7 horizontal moving dolly (6) axonometric view schematic diagram front end indicates the partial enlarged view of II.
The vertical view of Fig. 8 longitudinal rail (10).
The vertical view of Fig. 9 cross slide way (11).
Figure 10 verifying process flow figure.
In figure: 1, 2. left, right video camera pick-up unit, 3. planer-type support, 4. industrial control computer, 5. lateral driver device, 6. horizontal moving dolly, 7. cross slide way, 8. longitudinal driving device, 9. longitudinal shift type dolly, 10. longitudinal rail, 11, 23. indulge, horizontal stepper motor support, 12, 22. indulge, horizontal stepper motor, 13, 24. indulge, horizontal stepper motor fixed support, 14, 30. indulge, horizontal shaft coupling, 15, 26. indulge, lateral tension rope, 16, 25. indulge, lateral tension is taken turns, 17, 27. indulge, transverse drive shaft, 18, 29. indulge, transverse rollers bearing seat, 19, 28. indulge, transverse rollers bearing, 20, 31. indulge, lateral light electric axis scrambler support, 21, 32. indulge, lateral light electric axis scrambler, 33. by tabula rasa, 34. light board mounts, 35, 39. indulge, horizontal moving cart base plate, 36, 40. indulge, horizontal wheel, 37. red light sources, 38. red light source supports, 41, 42. indulge, cross slide way fixed cross beam.
Embodiment
Particular content of the present utility model and embodiment thereof is further described below in conjunction with accompanying drawing illustrated embodiment.
Based on a Test System for Automobile Brake Performance calibrating installation for stereoscopic vision, this device forms primarily of longitudinal motion mechanism, transverse motion mechanism and industrial control computer.Described longitudinal motion mechanism is formed by the longitudinal shift type dolly 9 of tabula rasa and longitudinal driving device 8 by longitudinal rail 10, configuration.Described transverse motion mechanism is made up of cross slide way 7, the horizontal moving dolly 6 configuring red light source and lateral driver device 5.Described drive unit by vertical, horizontal stepper motor 12,22, driver, controller, vertical, horizontal stretching pulley 16,25, vertical, horizontal roller bearings 19,28, vertical, horizontal roller bearing seat 18,29 and vertical, horizontal photo electric axis scrambler 21,32 form.Described vertical, horizontal stepper motor 12,22 is arranged on vertical, horizontal driving shaft 17,27 side respectively, and vertical, horizontal stepper motor 12,22 and vertical, horizontal driving shaft 17,27 concentric.Described driver and controller are arranged on vertical, horizontal stepper motor support 11,23.Described vertical, horizontal stretching pulley 16,25 is installed on the driving shaft with on the axis of rolling of the guide rail other end by spline.Described vertical, horizontal roller bearings 19,28 is connected with vertical, horizontal roller bearing seat 18,29 interference, and vertical, horizontal roller bearing seat 18,29 is arranged on the two ends of vertical, horizontal guide rail respectively.Described vertical, horizontal photo electric axis scrambler 21,32 is arranged on the opposite side of vertical, horizontal driving shaft respectively, and respectively with vertical, horizontal step motor shaft concentric.
The utility model relates to the device of a kind of checking based on the Test System for Automobile Brake Performance precision of stereoscopic vision, and this device is primarily of the composition such as longitudinal stepper motor 12 and horizontal stepper motor 22, the CCD left video camera pick-up unit 1 of same model and the vertical, horizontal photo electric axis scrambler 21,32 of right video camera pick-up unit 2, industrial control computer 4, two same model of same model.The model that described stepper motor is selected is 57BYGH1501, the long 114mm of fuselage, and its step angle is 1.8 °, and statical moment is 28kgcm, and moment of inertia is 811gcm
2; The model of described video camera is DH-HV3150UC, and adopt CMOS color digital image sensor, resolution is 2048 × 1536, and USB interface, is equipped with Varifocal zoom lens; The model of described industrial control computer is for grinding magnificent IPC-610; The model of described photo electric axis scrambler is A-LEC-D5-102.4BM-G8-30F, and operating voltage is DC5-24V, maximum machine rotating speed 5000 revs/min, electrically rings 20K/ second frequently, comprehensive rotating speed 2000 revs/min.
The utility model relates to the method for a kind of checking based on the Test System for Automobile Brake Performance precision of stereoscopic vision, longitudinal rail 10 and cross slide way 7 are placed on the level ground before planer-type support 3 respectively, the center line of longitudinal rail 10 and driving center line are overlapped, center line and the driving central axis of cross slide way 7.Before calibrating starts, obtain the inside and outside parameter of two video cameras according to camera marking method, the angle of adjustment video camera makes it obtain best calibration position.Place longitudinal shift type dolly 9 to hold in the A2 of longitudinal rail 10, horizontal moving dolly 6 is held in the B2 of cross slide way 7.Industrial control computer 4 controls longitudinal driving device 8 and lateral driver device 5.When calibrating starts, industrial control computer 4 is respectively to longitudinal stepper motor 12 and horizontal stepper motor 22 transponder pulse signal, drive the output shaft rotation of longitudinal stepper motor 12 and horizontal stepper motor 22, longitudinal shift type dolly 9 is driven to move on longitudinal rail 10 by longitudinal tensioned lines 15, direction of motion is A2 → A1, drive horizontal moving dolly 6 to move on cross slide way 7 by lateral tension rope 26, direction of motion is B2 → B1.Industrial control computer 4 controls left video camera pick-up unit 1 and right video camera pick-up unit 2, and shooting red light source 37 dozens is being subject to the light spot image on tabula rasa 33, and industrial control computer 4 stores light spot image.After longitudinal shift type dolly 9 and horizontal moving dolly 6 stop, the image that the program of industrial control computer 4 inside gathers according to video camera, adopt computer image processing technology, carry out hot spot center of circle three dimensional reconstruction, obtain longitudinal shift type dolly 9 and the real time kinematics track of horizontal moving dolly 6 simulated automotive in braking procedure, to verify the precision of detection system.
A kind of checking described in the utility model is based on the device of the Test System for Automobile Brake Performance precision of stereoscopic vision, mainly relate to longitudinal motion mechanism and transverse motion mechanism, these two kinds of motions are made up of longitudinal driving device 8, lateral driver device 5, longitudinal shift type dolly 9, horizontal moving dolly 6, longitudinal rail 10 and cross slide way 7.Longitudinal driving device 8 is arranged on the A1 end of longitudinal rail 10, and lateral driver device 5 is arranged on the B1 end of cross slide way 7.Longitudinal shift type dolly 9 and horizontal moving dolly 6 frame, on longitudinal rail 10 and cross slide way 7, do radial motion by driving stepper motor on guide rail.Longitudinal rail 10 and cross slide way 7 at right angle setting mutually, is fixed on the ground by the expansion bolt of M8 × 16.
With reference to Fig. 2,3, described longitudinal driving device 8 comprises longitudinal stepper motor 12, driver, controller, stretching pulley 16, roller bearing seat 18, roller bearings 19 and photo electric axis scrambler 21 and forms.Described stepper motor 12 is arranged on the stepper motor fixed support 13 of driving shaft side by the screw of M3 × 4, and stepper motor fixed support 13 is fixed on stepper motor support 11 by the screw of M3 × 4.The output shaft of stepper motor 12 is connected with driving shaft 17 by the shaft coupling 14 of 8 × 10.Driver and controller are arranged on stepper motor support 11.Roller bearings 19 is connected with roller bearing seat 18 interference, and roller bearing seat 18 is arranged on the fixed position of guide rail by the hex screw of M5 × 10.Driving shaft 17 is assemblied on roller bearings 19, is connected with stepper motor 12 and photo electric axis scrambler 21 by shaft coupling 14, and with step motor shaft concentric.Stretching pulley 16 is arranged on the driving shaft 17 that longitudinal rail A1 holds and on the axis of rolling of the guide rail other end, for interference is connected between stretching pulley with spline by the spline of 3 × 20.Photo electric axis scrambler 21 is by being arranged on the photo electric axis scrambler support 20 of driving shaft opposite side with the screw of M3 × 4, photo electric axis scrambler and the driving shaft shaft coupling of 8 × 10 is connected.Described lateral driver device 5 comprises stepper motor 22, driver, controller, lateral tension wheel 25, transverse rollers bearing seat 29, transverse rollers bearing 28 and lateral light electric axis scrambler 32 and forms.The installation method of described lateral driver device 5 and position are with longitudinal driving device 8.
With reference to Fig. 4,5,6,7, described longitudinal shift type dolly forms by by tabula rasa 33, light board mount 34, mobile trolley base plate 35, longitudinal wheel 36 and tensioned lines pre-tightening apparatus.Be fixed by tabula rasa and light the board mount bolt of two M8 × 60 and the nut of M8, fix with reference to the pre-tightening apparatus shown in Fig. 5 between longitudinal tensioned lines 15 and longitudinal shift type dolly 9.Described horizontal moving moving of car device is by red light source 37, red light source support 38, mobile trolley base plate 39, and horizontal wheel 40 forms.Fix with reference to the pre-tightening apparatus shown in Fig. 7 between lateral tension rope 26 and horizontal moving dolly 6.
With reference to Fig. 8,9, longitudinal rail 10 and cross slide way 7 and consult figure Fig. 8, Fig. 9 from the layout between cross slide way fixed cross beam 41,42, length and width all consult Fig. 8, Fig. 9.Described longitudinal rail and cross slide way are formed by square steel, and longitudinal rail length is 3000-6000mm, and width is 300mm, and cross slide way length is 2000-4000mm, and width is 300mm, and longitudinal rail and cross slide way at right angle setting.
With reference to Fig. 1, Fig. 1 is consulted in verification system general layout.This demo plant Structural design idea is novel unique, and checking precision is good, and structure is simple, is convenient to installation operation.
Claims (2)
1., based on a Test System for Automobile Brake Performance calibrating installation for stereoscopic vision, this device, primarily of longitudinal motion mechanism, transverse motion mechanism, video camera and industrial control computer composition, is characterized in that:
Described longitudinal motion mechanism is by longitudinal rail (10), configuration is formed by the longitudinal shift type dolly (9) of tabula rasa and longitudinal driving device (8), described transverse motion mechanism is by cross slide way (7), horizontal moving dolly (6) and the lateral driver device (5) of configuration red light source are formed, described longitudinal rail (10) length is 3000-6000mm, width is 300mm, cross slide way length is 2000-4000mm, width is 300mm, and longitudinal rail and cross slide way at right angle setting, described video camera is arranged on the gantry support (3) at distance cross slide way (7) 300mm place.
2. a kind of Test System for Automobile Brake Performance calibrating installation based on stereoscopic vision according to claim 1, it is characterized in that: described vertical and horizontal drive unit is respectively by stepper motor, driver, controller, stretching pulley, roller bearings and photo electric axis scrambler composition, described stepper motor is arranged on driving shaft side, and stepper motor and driving shaft concentric, described driver and controller are arranged on stepper motor fixed support, described stretching pulley is installed on the driving shaft by spline, described roller bearings is connected with roller bearing seat interference fit, be arranged on the two ends of guide rail, with step motor shaft concentric, described photo electric axis scrambler is arranged on the opposite side of driving shaft, and with step motor shaft concentric.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792542A (en) * | 2015-04-08 | 2015-07-22 | 吉林大学 | Automobile brake performance detecting system calibrating apparatus and automobile brake performance detecting system calibrating method based on stereoscopic vision |
| CN105651165A (en) * | 2015-12-30 | 2016-06-08 | 中国科学院长春光学精密机械与物理研究所 | Solar thermal power generation trough type light concentrator overall profile online detection device |
| CN106840695A (en) * | 2017-01-13 | 2017-06-13 | 南安市永腾技术咨询有限公司 | A kind of Automobile Parts Inspection system based on VR technologies |
-
2015
- 2015-04-08 CN CN201520207914.5U patent/CN204694476U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104792542A (en) * | 2015-04-08 | 2015-07-22 | 吉林大学 | Automobile brake performance detecting system calibrating apparatus and automobile brake performance detecting system calibrating method based on stereoscopic vision |
| CN104792542B (en) * | 2015-04-08 | 2017-07-04 | 吉林大学 | Test System for Automobile Brake Performance calibrating installation and method based on stereoscopic vision |
| CN105651165A (en) * | 2015-12-30 | 2016-06-08 | 中国科学院长春光学精密机械与物理研究所 | Solar thermal power generation trough type light concentrator overall profile online detection device |
| CN106840695A (en) * | 2017-01-13 | 2017-06-13 | 南安市永腾技术咨询有限公司 | A kind of Automobile Parts Inspection system based on VR technologies |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20180408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |