CN102636358A - Method for four-wheel positioning of oversize and heavy multi-shaft vehicle - Google Patents
Method for four-wheel positioning of oversize and heavy multi-shaft vehicle Download PDFInfo
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- CN102636358A CN102636358A CN2012101333686A CN201210133368A CN102636358A CN 102636358 A CN102636358 A CN 102636358A CN 2012101333686 A CN2012101333686 A CN 2012101333686A CN 201210133368 A CN201210133368 A CN 201210133368A CN 102636358 A CN102636358 A CN 102636358A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 11
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000005622 photoelectricity Effects 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000012634 optical imaging Methods 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The invention discloses a method for four-wheel positioning of an oversize and heavy multi-shaft vehicle. A deviation value from an origin is calculated by utilizing optical projection of an optical imaging technology in a dark box and a deviation angle is calculated by using the principle of inverse trigonometric function; the dark box consists of a photoelectric coupling sensor, a lens and a detection circuit; the photoelectric coupling sensor is parallel to the lens and a focus of the lens falls on the photoelectric coupling sensor; infrared light emitted from a C sensor falls on the photoelectric coupling sensor after passing through the lens; the distance from an infrared light pixel point to the origin can be detected through the detection circuit; and both the front end of a B sensor and the rear end of an A sensor are provided with infrared emitting lamps and dark box structures for receiving infrared light. By using a measuring mode of the three sensors and a measuring method of a plurality of groups of combined sensors, the deflection angle of double steering wheels is detected depending on the center of a body, the accuracy for measurement is high, and the consistency for adjusting rear wheels of the vehicle is extremely excellent.
Description
Technical field
The present invention relates to the method for a kind of four-wheel location, particularly do a kind of method of four-wheel location to large-scale and heavy multiple-axle vehicle.
Background technology
In recent years, the tonnage of heavy duty truck and professional Operation Van increases gradually, and the cargo dead-weight of vehicle is on the increase, and a series of large-scale, heavy duty truck vehicles occurred, both occurred three even more the vehicle of multiaxis.How to guarantee the maintenance adjustment of these vehicles behind the certain hour that goes, perhaps the maintenance after having an accident makes the operation that vehicle can safety, and this is a challenge for maintenance industry with the maintenance checkout equipment.Be directed against the technical merit of the four-wheel position finder that detects on large-scale and heavy multiple-axle vehicle chassis at present, basically also rest on the level at the initial stage nineties.Generally be to adopt four sensors to measure, this measurement can not well solve double steering shaft consistance in motion for the measurement of double steering shaft vehicle; Can only measure the parameter adjustment of an axle for multiple-axle vehicle at every turn and be moved to next axle again after intact and measure, adjust, measure adjustment successively up to each axle and finish.Such measurement adjustment process is more loaded down with trivial details, time-consuming and accuracy is low, can not guarantee the security of vehicle adjustment back operation.
Summary of the invention
For solving the defect problem that prior art exists, the present invention proposes three groups of a kind of employings or organizes sensor more, does the method for four-wheel location for large-scale and heavy multiple-axle vehicle.
Solve the problem that prior art exists; The technical scheme that the present invention adopts is: utilize optical image technology to calculate apart from the deviate of initial point and the principle of inverse trigonometric function in the inner optical projection of magazine and calculate deviation angle; Deflection angle θ=arctg (d/f); Wherein d is that IR is fallen on the photoelectricity coupling sensor apart from the distance of initial point, and f is the focal length of lens; Described magazine is made up of photoelectricity coupling sensor, lens and testing circuit; Photoelectricity coupling sensor and focuses lens parallel with lens are fallen on the photoelectricity coupling sensor; It is 2.7um that the photoelectricity coupling sensor is formed every adjacent phase vegetarian refreshments spacing by 8100 pixels; The infrared light that the C sensor emission is come is fallen on the photoelectricity coupling sensor through lens; Can detect the distance of infrared light pixel through testing circuit to initial point; Infrared discharge lamps is all arranged in the rear end of the front end of B sensor and A sensor and receive the magazine structure of IR; Principle above utilizing like this can detect the relative drift angle between A, the B sensor, makes the drift angle value up to specification of left and right wheels according to the wheel at detection data adjustment B sensor recited above place, and then adjustment A sensor place wheel to make the relative drift angle between A, the B be zero.
Method one adopts A, B, B1, B2 ... ..B
(n-2)The metering system of (n is the quantity of axle) many group sensor combinations; At first measure A, the drift angle of B sensor place wheel and the relative drift angle between them; Adjust A, B sensor place wheel respectively according to measurement result then and make its value up to specification; Be that benchmark and B1 sensor combinations are measured the drift angle of B1 sensor place wheel and the relative drift angle between them with B sensor place wheel then; The wheel of adjusting B1 sensor place according to the result who measures then parallels its drift angle value up to specification and B1 vehicle bridge and B vehicle bridge; The drift angle equates relatively; Be that benchmark is measured the drift angle of B2 sensor place wheel and the relative drift angle between them with the B2 sensor combinations with B1 sensor place wheel then, the wheel of adjusting B2 sensor place according to the result who measures then parallels its drift angle value up to specification and B2 vehicle bridge and B1 vehicle bridge, and relative drift angle is equal.
Method two, the metering system of employing A, B, three groups of sensor combinations of C is suspended to the A sensor on first deflecting roller, and the B sensor is suspended on second deflecting roller, and the C sensor is suspended on the crossbeam at car body middle part; Its last bridge of double steering vehicle is a steeraxle with the first two bridge; Wheel on the first two bridge rotates along with the wheel on the last bridge; Last bridge should be point-blank with the wheel running orbit on the first two bridge when vehicle was kept straight on; The extended line of vehicle axis of the wheel on last bridge and the first two bridge when turning to intersects at a point in the extended line of rear axle; The realization wheel is done pure rolling when turning to, the lever arm of C sensor physical dimension known to the distance of infrared discharge lamps and every C sensor all is the same, and the center line of vehicle body equates to the distance of the infrared discharge lamps of every C sensor; The IR that two C sensor emission go out is just as reference measurement light, and the magazine of the B sensor internal of face wheel receives the drift angle that IR that the C sensor emission comes is judged wheel before hanging over.
The invention has the beneficial effects as follows: the measurement pattern that adopts three sensor combinations to the double steering vehicle; Rely on the center of car body to utilize the C sensor that the reference measurement light source is provided; Detect the deflection angle of double steering wheel, the accuracy of measurement is high, and the consistance of vehicle adjustment rear wheel is very good.Adopt the metering system of many group sensor combinations to common multiple-axle vehicle; The quantity that is free to increase and decrease the B sensor according to the quantity of axletree makes the measurement of its disposable all wheels of completion; For the maintenance personal provides the measurement parameter of car load, the accuracy of measuring adjustment like this is high, high conformity.
Description of drawings
Fig. 1 is that the present invention adopts A, B, B1, B2 ... ..B
(n-2)The metering system synoptic diagram of (n is the quantity of axle) many group sensor combinations;
Fig. 2 is the metering system synoptic diagram that the present invention adopts A, B, three groups of sensor combinations of C.
Shown in the figure: vehicle body frame 1, A sensor 2, B sensor 3, B1 sensor 4, B2 sensor 5, tire 6, C sensor 7.
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Embodiment
1, adopts A, B, B1, B2 ... ..B
(n-2)The metering system of many group sensor combinations
As shown in Figure 1; This kind method is to utilize optical image technology to calculate apart from the deviate of initial point and the principle of inverse trigonometric function in the inner optical projection of magazine to calculate deviation angle; Deflection angle θ=arctg (d/f), wherein d is that IR is fallen on the photoelectricity coupling sensor distance apart from initial point; F is the focal length of lens.
At first measure the drift angle of A, B sensor place wheel and the relative drift angle between them, then according to measurement result adjust A respectively, B sensor place wheel makes its value up to specification.Be that benchmark and B1 sensor combinations are measured the drift angle of B1 sensor place wheel and the relative drift angle between them with B sensor place wheel then; The wheel of adjusting B1 sensor place according to the result who measures then parallels its drift angle value up to specification and B1 vehicle bridge and B vehicle bridge, and the drift angle is equal relatively.Be that benchmark and B2 sensor combinations are measured the drift angle of B2 sensor place wheel and the relative drift angle between them with B1 sensor place wheel then; The wheel of adjusting B2 sensor place according to the result who measures then parallels its drift angle value up to specification and B2 vehicle bridge and B1 vehicle bridge, and the drift angle is equal relatively.
2, adopt the metering system of A, B, three groups of sensor combinations of C
Calculate apart from the deviate of initial point and the principle of inverse trigonometric function in the inner optical projection of magazine according to optical image technology equally and calculate deviation angle; Deflection angle θ=arctg (d/f), wherein d is that IR is fallen on the photoelectricity coupling sensor distance apart from initial point; F is the focal length of lens.
The A sensor is suspended on first deflecting roller, and the B sensor is suspended on second deflecting roller, and the C sensor is suspended on the crossbeam at car body middle part.Its last bridge of double steering vehicle is a steeraxle with the first two bridge; Wheel on the first two bridge rotates along with the wheel on the last bridge; Last bridge should be point-blank with the wheel running orbit on the first two bridge when vehicle was kept straight on; The extended line of vehicle axis of the wheel on last bridge and the first two bridge when turning to intersects at a point in the extended line of rear axle, realizes that wheel does pure rolling when turning to, if do not satisfy above-mentioned condition; The wheel of the first two bridge will produce serious wear phenomenon, bring financial burden also seriously to jeopardize the safety of operation to the car owner.Large-scale, heavy vehicle chassis structure generally is whole framed structure, and the center of framework promptly is the center of car body, and four-wheel positioning measurement is that benchmark is measured with this center.
In measuring system shown in Figure 2; The lever arm of C sensor physical dimension known to the distance of infrared discharge lamps and every C sensor all is the same; The center line of vehicle body equates to the distance of the infrared discharge lamps of every C sensor like this; The IR that two C sensor emission go out is just as reference measurement light; The magazine of the B sensor internal of face wheel receives the drift angle that the next IR of C sensor emission is judged wheel before hanging over, and its detection principle is to utilize optical image technology to calculate apart from the deviate of initial point and the principle of inverse trigonometric function in the inner optical projection of magazine to calculate deviation angle.Magazine is made up of photoelectricity coupling sensor (CCD), lens and testing circuit; Photoelectricity coupling sensor and focuses lens parallel with lens are fallen on the photoelectricity coupling sensor; It is 2.7um that the photoelectricity coupling sensor is formed every adjacent phase vegetarian refreshments spacing by 8100 pixels; The infrared light that the C sensor emission is come is fallen on the photoelectricity coupling sensor through lens; Can detect the distance of infrared light pixel through testing circuit, infrared discharge lamps all arranged in the rear end of the front end of B sensor and A sensor and receive the magazine structure of IR, utilize top principle can detect the relative drift angle between A, the B sensor like this to initial point.Make the drift angle value up to specification (dividing prenex) of left and right wheels then according to the wheel at top detection data adjustment B sensor place, and then adjustment A sensor place wheel to make the relative drift angle between A, the B be zero.
Claims (3)
1. large-scale and heavy multiple-axle vehicle is done the method for four-wheel location; It is characterized in that: utilize optical image technology to calculate apart from the deviate of initial point and the principle of inverse trigonometric function and calculate deviation angle in the inner optical projection of magazine; Deflection angle θ=arctg (d/f); Wherein d is that IR is fallen on the photoelectricity coupling sensor apart from the distance of initial point, and f is the focal length of lens; Described magazine is made up of photoelectricity coupling sensor, lens and testing circuit; Photoelectricity coupling sensor and focuses lens parallel with lens are fallen on the photoelectricity coupling sensor; It is 2.7um that the photoelectricity coupling sensor is formed every adjacent phase vegetarian refreshments spacing by 8100 pixels; The infrared light that the C sensor emission is come is fallen on the photoelectricity coupling sensor through lens; Can detect the distance of infrared light pixel through testing circuit to initial point; Infrared discharge lamps is all arranged in the rear end of the front end of B sensor and A sensor and receive the magazine structure of IR; Principle above utilizing like this can detect the relative drift angle between A, the B sensor, makes the drift angle value up to specification of left and right wheels according to the wheel at detection data adjustment B sensor recited above place, and then adjustment A sensor place wheel to make the relative drift angle between A, the B be zero.
2. large-scale and heavy multiple-axle vehicle according to claim 1 is done the method for four-wheel location, it is characterized in that: method one, adopt A, B, B1, B2 ... ..B
(n-2)The metering system of (n is the quantity of axle) many group sensor combinations; At first measure A, the drift angle of B sensor place wheel and the relative drift angle between them; Adjust A, B sensor place wheel respectively according to measurement result then and make its value up to specification; Be that benchmark and B1 sensor combinations are measured the drift angle of B1 sensor place wheel and the relative drift angle between them with B sensor place wheel then; The wheel of adjusting B1 sensor place according to the result who measures then parallels its drift angle value up to specification and B1 vehicle bridge and B vehicle bridge; The drift angle equates relatively; Be that benchmark is measured the drift angle of B2 sensor place wheel and the relative drift angle between them with the B2 sensor combinations with B1 sensor place wheel then, the wheel of adjusting B2 sensor place according to the result who measures then parallels its drift angle value up to specification and B2 vehicle bridge and B1 vehicle bridge, and relative drift angle is equal.
3. large-scale and heavy multiple-axle vehicle according to claim 1 is done the method for four-wheel location; It is characterized in that: method two; Adopt the metering system of A, B, three groups of sensor combinations of C; The A sensor is suspended on first deflecting roller, and the B sensor is suspended on second deflecting roller, and the C sensor is suspended on the crossbeam at car body middle part; Its last bridge of double steering vehicle is a steeraxle with the first two bridge; Wheel on the first two bridge rotates along with the wheel on the last bridge; Last bridge should be point-blank with the wheel running orbit on the first two bridge when vehicle was kept straight on; The extended line of vehicle axis of the wheel on last bridge and the first two bridge when turning to intersects at a point in the extended line of rear axle; The realization wheel is done pure rolling when turning to, the lever arm of C sensor physical dimension known to the distance of infrared discharge lamps and every C sensor all is the same, and the center line of vehicle body equates to the distance of the infrared discharge lamps of every C sensor; The IR that two C sensor emission go out is just as reference measurement light, and the magazine of the B sensor internal of face wheel receives the drift angle that IR that the C sensor emission comes is judged wheel before hanging over.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101333686A CN102636358A (en) | 2012-05-03 | 2012-05-03 | Method for four-wheel positioning of oversize and heavy multi-shaft vehicle |
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| CN2012101333686A CN102636358A (en) | 2012-05-03 | 2012-05-03 | Method for four-wheel positioning of oversize and heavy multi-shaft vehicle |
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| CN102636358A true CN102636358A (en) | 2012-08-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162975A (en) * | 2013-03-29 | 2013-06-19 | 营口瀚为科技有限公司 | Automatic tracking 3D (three dimensional) position indicator |
| CN103196675A (en) * | 2013-03-22 | 2013-07-10 | 烟台一兴电子科技有限公司 | Position finder for vehicle |
| CN103217303A (en) * | 2013-03-29 | 2013-07-24 | 营口瀚为科技有限公司 | Method for realizing movable survey with 3D (three-dimensional) positioning instrument |
| CN103884518A (en) * | 2014-03-03 | 2014-06-25 | 合肥市强科达科技开发有限公司 | Method and device for achieving four-wheel positioning and detection of automobile by adoption of attitude sensor |
| CN106382887A (en) * | 2016-11-08 | 2017-02-08 | 南京沃宇机电有限公司 | System for measuring position relation between longitudinal axis of automotive compartment and back axle center |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196675A (en) * | 2013-03-22 | 2013-07-10 | 烟台一兴电子科技有限公司 | Position finder for vehicle |
| CN103162975A (en) * | 2013-03-29 | 2013-06-19 | 营口瀚为科技有限公司 | Automatic tracking 3D (three dimensional) position indicator |
| CN103217303A (en) * | 2013-03-29 | 2013-07-24 | 营口瀚为科技有限公司 | Method for realizing movable survey with 3D (three-dimensional) positioning instrument |
| CN103217303B (en) * | 2013-03-29 | 2017-10-10 | 营口瀚为科技有限公司 | The method that 3D position indicators realize moveable measurement |
| CN103162975B (en) * | 2013-03-29 | 2017-12-05 | 营口瀚为科技有限公司 | From motion tracking 3D position indicators |
| CN103884518A (en) * | 2014-03-03 | 2014-06-25 | 合肥市强科达科技开发有限公司 | Method and device for achieving four-wheel positioning and detection of automobile by adoption of attitude sensor |
| CN106382887A (en) * | 2016-11-08 | 2017-02-08 | 南京沃宇机电有限公司 | System for measuring position relation between longitudinal axis of automotive compartment and back axle center |
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Application publication date: 20120815 |