CN201680958U - Device for testing parking deflection angle of motor vehicle - Google Patents
Device for testing parking deflection angle of motor vehicle Download PDFInfo
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- CN201680958U CN201680958U CN2010200498508U CN201020049850U CN201680958U CN 201680958 U CN201680958 U CN 201680958U CN 2010200498508 U CN2010200498508 U CN 2010200498508U CN 201020049850 U CN201020049850 U CN 201020049850U CN 201680958 U CN201680958 U CN 201680958U
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- collimated light
- motor vehicle
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- deflection angle
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Abstract
The utility model relates to a device for testing a parking deflection angle of a vehicle, in particular to a device for testing a parking deflection angle of a motor vehicle. The device comprises a longitudinal guide rail laid on the ground and a longitudinal laser device moving along the longitudinal guide rail; the longitudinal laser device comprises a control module, a ranging module, a laser transmitting unit and a laser receiving unit; the laser transmitting unit, the laser receiving unit and the ranging module are respectively connected with the control module; and the laser transmitting unit and the laser receiving unit are respectively arranged on the left and right side surfaces of the longitudinal laser device. With the characteristics of simple as well as convenient operation, simple structure, high efficiency and accurate measuring, the device can measure the parking angle of the vehicle at the same time as measuring the illumination deflection angle of a headlamp of the motor vehicle, thereby utilizing the parking angle of the vehicle to correct the actual deflection angle of light.
Description
Technical field
The utility model patent relates to a kind of device of motor vehicle parking deflection angle testing.
Background technology
Automobile lamplight detector mainly is applicable to Automobile Detection maintenance completion line and Auto repair shop, the installation site of car headlamp is detected and is looked after and guided for manual operation by the people, and direction of illumination far away to guarantee, low beam light meets the GB requirement.
In order to guarantee measurement of angle result's correctness, when using lamplight detector, require to guarantee automobile longitudinal axis and lighting meter detection screen be vertical to align, but at present when actual detected, aligning main dependence draws car person and estimates realization, thereby have bigger error, can not guarantee the accuracy of light testing result.In order to overcome this problem, now common following dual mode is as the solution of this problem.
1. Automobile turntable
The front and rear wheel of tested automobile is parked in respectively in the slip or rolling plate of straight-putting unit front-wheel platform and trailing wheel platform, and extending frame outwards promotes vehicle synchronously, ajusts up to vehicle.Because extending frame is symmetrical in the detection line translation, so the center line of the vehicle longitudinal axis also just coincides with the center line of detection line, and tested vehicle is promptly ajusted.Its weak point is, can not adapt to the vehicle of disalignment distance on the one hand, can't carry heavy vehicle; Straight-putting unit complex structure, huge is installed difficulty on the other hand; The operation more complicated, the adjustment time is long, and detection efficiency is low, cost is high.
2. to the perception of vehicle parking angle and to the correction of testing result
Method mainly contains two kinds, and a kind of is the range finding location technology; Another kind is the framing technology.
1) range finding location technology
The ultimate principle of range finding location technology is, utilize artificial or image technology to determine the position of the automobile two symmetrical headlamps symmetric position of other positive fronts of vehicle such as tire (perhaps such as), measure its distance respectively with distance measuring sensor to lighting meter, measure the centre distance L of two symmetric positions again, can calculate the angle of vehicle longitudinal axis center line and detection line center line.Range finding can be selected technology such as laser ranging, ultrasonic ranging, displacement transducer range finding, and artificial location or ccd image intelligence location can be selected in the location at headlamp center.This method is that the supersonic sounding precision is lower to the subject matter that exists; Displacement transducer need utilize mechanical system to touch, and damages easily when reality is practical; The needs of laser ranging are used high-precision distance-measuring equipment always, and cost is higher.Simultaneously, the distance L of symmetric points normally measures by the walking of lighting meter, and its error is bigger.
2) framing technology
The framing technology is to utilize a high resolution CCD camera that is installed in top, automobile parking position that vehicle is carried out the plane to take pictures, the image in picked-up actual detected stand zone, send into computing machine through image pick-up card, utilize computing machine that image is handled, obtain automobile and overlook the appearance profile image, by analytical calculation, try to achieve the angle of eccentricity of automobile longitudinal axis and detection line center line again to image outline.After treating that the headlamp measurement result is sent into computing machine, computing machine adds or deducts angle of eccentricity with the measurement result of headlamp aligner, promptly obtains the horizontal-shift angle of revised headlight beam reality, thereby realizes the automatic correction of measuring error.This method is received the interference that external image changes easily, simultaneously, and for some complex contours or there is the measurement of left and right sides unsymmetric structure well not measure.
Summary of the invention
To carry out automotive headlight light-illuminating drift angle when measuring in order being implemented in, simultaneously the angle of parking of vehicle to be measured, utilize the angle of parking of vehicle that the actual drift angle of light is revised.A purpose of the present utility model provides the method for motor vehicle parking deflection angle testing.That this method has is easy and simple to handle, efficient is high, measures characteristic of accurate.Another one purpose of the present utility model provides the motor vehicle parking deflection angle testing device of said method, and that this device has is easy and simple to handle, simple in structure, efficient is high, measures characteristic of accurate.
In order to realize above-mentioned technical purpose, the utility model has adopted following technical scheme:
The motor vehicle parking deflection angle testing device, this device comprises the longitudinal rail that is laid on ground, vertical collimated light device of guide rail movement longitudinally, vertically the collimated light device comprises control module, range finder module, collimated light transmitter unit and collimated light receiving element, collimated light transmitter unit, collimated light receiving element and range finder module be link control module respectively, and is provided with described collimated light transmitter unit and collimated light receiving element respectively on left and right two sides of vertical collimated light device; Described control module is set following control program and is carried out deflection angle testing: control vertical collimated light device longitudinally guide rail move, the collimation light emitting units emitting collimated light beam in left side is by the inboard ancient piece of jade, round, flat and with a hole in its centre reflection of left tire collimated light beam, the collimated light receiving element in left side picks up counting when beginning to receive collimated light beam, the collimation light emitting units emitting collimated light beam on right side is by the inboard ancient piece of jade, round, flat and with a hole in its centre reflection of right tire collimated light beam, when beginning to receive collimated light beam, finishes the collimated light receiving element on right side timing, the distance D that range finder module obtains the vertical collimated light device walking of timing this section period passes to control module, control module is obtained the tire pitch L of motor vehicle, calculates bias angle theta according to drift angle computing formula θ=arctg (D/L).
Mode as an alternative, control module are obtained the mode of the tire pitch L of motor vehicle and are measured axle length L for passing through the transversal collimation electro-optical device; The transversal collimation electro-optical device is arranged on the cross slide way, and the transversal collimation electro-optical device is provided with collimated light transmitter unit, collimated light receiving element and range finder module, and the collimated light transmitter unit is connected with range finder module respectively with the collimated light receiving element; The collimated light beam of the collimation light emitting units emitting of transversal collimation electro-optical device is by left tire tyre surface reflection collimated light beam, the collimated light receiving element of transversal collimation electro-optical device receives collimated light and picks up counting, the collimated light beam of the collimation light emitting units emitting of transversal collimation electro-optical device is by right tire tread reflection collimated light beam, the transversal collimation electro-optical device receives collimated light receiving element collimated light and finishes timing, and the distance that range finder module obtains the transversal collimation electro-optical device walking of timing this section period is axle length L.Certainly, above-mentioned control module is obtained the mode of tire pitch L of vehicle for transferring the motor vehicle database information.Perhaps, control module is obtained the mode of tire pitch L of vehicle for measure axle length L by displacement transducer.
As further preferred, this device also comprises left and right baffle plate (at field, can without baffle plate), and left and right baffle plate is separately positioned on the both sides of motor vehicle.As preferred again, left and right baffle plate adopts delustring to handle.Perhaps, left and right baffle plate adopts the reflecting material with higher retroreflection coefficient.
The utility model has been owing to adopted above technical scheme, is implemented in to carry out automotive headlight light-illuminating drift angle when measuring, and simultaneously the angle of parking of vehicle measured, and utilizes the angle of parking of vehicle the actual drift angle of light is revised.The utlity model has easy and simple to handle, simple in structure, efficient is high, measures characteristic of accurate.
Description of drawings
Fig. 1 is the user mode figure of the utility model device.
Fig. 2 is the structured flowchart of the vertical laser aid of the utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is made a detailed explanation.
As Fig. 1, motor vehicle parking deflection angle testing device shown in Figure 2, this device comprises the longitudinal rail 2 that is laid on ground, the vertical laser aid 1 and the left side of guide rail 2 motions longitudinally, right baffle plate 8 is (at field, can be without baffle plate), vertically laser aid 1 comprises control module 11, range finder module 12, laser emission element 13 and laser pick-off unit 14, laser emission element 13, laser pick-off unit 14 and range finder module 12 be link control modules 11 (as shown in Figure 2) respectively, and respectively on the vertical left side of laser aid 1, right two sides are provided with described laser emission element 13 and laser pick-off unit 14.Left and right baffle plate 8 is separately positioned on the both sides of motor vehicle 5, and vertically laser aid 1 is lower than motor vehicle 5 chassis heights, and longitudinal rail 2 is arranged on motor vehicle 5 bottoms.
As shown in Figure 1, described control module 11 is set following control program and carried out deflection angle testing: vertical laser aid 1 longitudinally guide rail 2 moves, laser emission element 13 emission of lasering beam in left side are by left tire 6 inboard ancient piece of jade, round, flat and with a hole in its centre reflection lasering beams, the laser pick-off unit 14 in left side picks up counting when beginning to receive laser beam, laser emission element 13 emission of lasering beam on right side are by right tire 7 inboard ancient piece of jade, round, flat and with a hole in its centre reflection lasering beams, when beginning to receive laser beam, finishes the laser pick-off unit 14 on right side timing, the distance D that range finder module 12 obtains timing this section period passes to control module 11, control module 11 is obtained the tire pitch L of vehicle, calculates bias angle theta according to drift angle computing formula θ=arctg (D/L).
The test philosophy of said apparatus can be by following two kinds:
One, left and right baffle plate 8 adopts delustring to handle, two bundle laser are on same straight line about among Fig. 1, the front surface of light beam and headlamp aligner parallel (vertical) with the optical axis of lamplight detector, the probe that comprises laser emission element 13 and laser pick-off unit 14 is fixed on the guide rail parallel with the optical axis of lamplight detector, the position is a little more than ground, when vehicle parking, probe moves forward and backward along guide rail, when laser radiation during at the tire inner surface, laser pick-off unit 14 has detected reflector laser; Otherwise survey less than reflector laser.The distance that probe moves on longitudinal rail 2 can obtain (as displacement transducer, range finder using laser) with range finder module 12 distance measuring methods, the tire pitch L of vehicle can obtain according to the model of tested vehicle (to measure when reaching the standard grade detection from database, should guarantee normal tire pressure, under the prerequisite that vehicle is not reequiped, the spacing of tire inner wall is guaranteed), measure the drift angle of parking with following several ways:
A. utilize laser signal to grow out of nothing or saltus step from having to do not having, measure the range difference that this saltus step produces on left and right directions, can measure the parking deflection angle of tire from the tire reflected signal, and with this drift angle as vehicle body;
If B. consider the inhomogeneous factor of issuable tire wear and because the obliquity effects of vehicle itself, adopt the tire reflected signal to grow out of nothing, and moving along with probe, disappear once more, the centre position that continues with signal is as the basis of parking deviation of left and right sides tire, thereby obtain the parking deflection angle of vehicle, its computational accuracy can be better than A;
The method of left and right baffle plate 8 delustrings can be to be coated with the material that employed laser is had high absorption coefficient at the material surface dress, perhaps adopts the high reflecting material of folding face as shown in Figure 1, makes laser pick-off unit 14 can not receive useful signal.
Two, left and right baffle plate 8 can adopt reflecting material or other material (as minute surface vertical with laser radiation or accurate specular reflective material) with higher retroreflection coefficient, guarantee when the laser radiation of receiving transducer, higher retroreflection coefficient is arranged, on laser pick-off unit 14, can receive more intense laser signal; The surface of tire then is that laser is carried out irreflexive rubber, and reflectivity is lower, chooses appropriate threshold, can think that when laser impinged upon on the tire, detector did not receive useful signal, otherwise, can receive more intense signal, think to receive the efficient laser reflected signal.Its operating angle measuring method together.
If further consider the raising measuring accuracy, the mode that control module 11 is obtained the tire pitch L of motor vehicle 5 is to measure axle length L by horizontal laser aid 3; Laterally laser aid 3 is arranged on the cross slide way 4, and laterally laser aid 3 is provided with laser emission element, laser pick-off unit and range finder module, and laser emission element is connected with range finder module respectively with the laser pick-off unit; Laterally the laser emission element emitted laser bundle of laser aid 3 is by left tire 6 tyre surface reflection lasering beams, laterally reception laser in the laser pick-off unit of laser aid 3 picks up counting, laterally the laser emission element emitted laser bundle of laser aid 3 is by right tire 7 tyre surface reflection lasering beams, laterally laser aid 3 receives the laser end timing of laser pick-off unit, and the distance that range finder module obtains horizontal laser aid 3 walkings of timing this section period is axle length L.
Claims (5)
1. motor vehicle parking deflection angle testing device, it is characterized in that: this device comprises the longitudinal rail (2) that is laid on ground, vertical collimated light device (1) of guide rail (2) motion longitudinally, vertically collimated light device (1) comprises control module (11), range finder module (12), collimated light transmitter unit (13) and collimated light receiving element (14), collimated light transmitter unit (13), collimated light receiving element (14) and range finder module (12) be link control module (11) respectively, and respectively on the vertical left side of collimated light device (1), right two sides are provided with described collimated light transmitter unit (13) and collimated light receiving element (14).
2. motor vehicle parking deflection angle testing device according to claim 1 is characterized in that: control module (11) is obtained the mode of the tire pitch L of motor vehicle (5) and is measured axle length L for passing through transversal collimation electro-optical device (3); Transversal collimation electro-optical device (3) is arranged on the cross slide way (4), transversal collimation electro-optical device (3) is provided with collimated light transmitter unit (13), collimated light receiving element (14) and range finder module (12), and collimated light transmitter unit (13) is connected with range finder module (12) respectively with collimated light receiving element (14); The collimated light beam of collimated light transmitter unit (13) emission of transversal collimation electro-optical device (3) is by left tire (6) tyre surface reflection collimated light beam, the collimated light receiving element (14) of transversal collimation electro-optical device (3) receives collimated light and picks up counting, the collimated light beam of collimated light transmitter unit (13) emission of transversal collimation electro-optical device (3) is by right tire (7) tyre surface reflection collimated light beam, transversal collimation electro-optical device (3) receives collimated light receiving element (14) collimated light and finishes timing, and the distance that range finder module (12) obtains timing this section period transversal collimation electro-optical device (3) walking is axle length L.
3. motor vehicle parking deflection angle testing device according to claim 1 and 2 is characterized in that: this device also comprises left and right baffle plate (8), and left and right baffle plate (8) is separately positioned on the both sides of motor vehicle (5).
4. motor vehicle parking deflection angle testing device according to claim 3 is characterized in that: left and right baffle plate (8) adopts delustring to handle.
5. motor vehicle parking deflection angle testing device according to claim 4 is characterized in that: left and right baffle plate (8) adopts the reflecting material with higher retroreflection coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200498508U CN201680958U (en) | 2010-01-08 | 2010-01-08 | Device for testing parking deflection angle of motor vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200498508U CN201680958U (en) | 2010-01-08 | 2010-01-08 | Device for testing parking deflection angle of motor vehicle |
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| Publication Number | Publication Date |
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| CN201680958U true CN201680958U (en) | 2010-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010200498508U Expired - Lifetime CN201680958U (en) | 2010-01-08 | 2010-01-08 | Device for testing parking deflection angle of motor vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384150A (en) * | 2017-08-03 | 2019-02-26 | 南通通镭软件有限公司 | The container tapered end framing of automated handling slings method with anti- |
-
2010
- 2010-01-08 CN CN2010200498508U patent/CN201680958U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109384150A (en) * | 2017-08-03 | 2019-02-26 | 南通通镭软件有限公司 | The container tapered end framing of automated handling slings method with anti- |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101222 |
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| CX01 | Expiry of patent term |