CN202033203U - Four-wheel position indicator - Google Patents
Four-wheel position indicator Download PDFInfo
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- CN202033203U CN202033203U CN2010206779079U CN201020677907U CN202033203U CN 202033203 U CN202033203 U CN 202033203U CN 2010206779079 U CN2010206779079 U CN 2010206779079U CN 201020677907 U CN201020677907 U CN 201020677907U CN 202033203 U CN202033203 U CN 202033203U
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- wheel
- wheel position
- position finder
- camera head
- target
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Abstract
The present utility model discloses a four-wheel position indicator which comprises four target wheel clamp combining bodies, two camera devices, a high precision real time image collector and a control host, the target wheel clamp combining bodies are fixed on wheels, the camera devices are arranged on the two sides of the upper part of the control host, the high precision real time image collector is respectively connected with the camera devices and the control host, and data are interacted in a two-way form. In the four-wheel position indicator, the all-digital CCD image technology and high precision infrared emission are adopted, thus images collected have higher precision, and the anti-interference capability is stronger.
Description
Technical field
The utility model relates to the vehicle detection technical field, particularly a kind of four-wheel position finder.
Background technology
The development in recent years of domestic automobile reconditioning facility industry is very fast, has progressively formed the leading enterprise of some industries.Some knowledgeable people have invested the foreign market with the development eye of enterprise and industry, mode by commission merchant or self-built representative office is developed overseas business, this trend meets the China status in world economy situation at present, is the main growth pattern that following vapour is protected the fast development of equipment industry.Along with the development like a raging fire of Chinese automobile market, the prospect of Chinese automobile aftermarket also gets most of the attention.Wherein the maximum especially beneficiary in market is maintained in auto repair.And because family's car purchase proportion is more and more higher, and the car owner is more and more stronger to Motor Maintenance consciousness, domestic automobile detects, the demand of maintenance facility is also increasing.
But at present vapour protects that the technology of equipment is domestic also to lag far behind the international competition adversary, and mainly is the foreign imitation technology, protects one of the major product four-wheel position finder of equipment as vapour, the huge market demand, and product technology difficulty height, added value is big.Along with pay attention to day by day and the management regulation of country to traffic safety, the market demand of four-wheel position finder equipment will expand rapidly under the guiding of national policy.
The detection mode of common in the market four-wheel position finder mainly contains: laser, PSD, CCD and 3D.Its characteristics are as follows respectively:
One, laser:
Laser is a kind of new type light source, and it is that light source applications as measuring system is in four-wheel position finder, because laser all is with vertical straight line output, therefore determined that the measurement range of laser product Shu Du is narrower, the artificial thrust line that calculates of uncompensated and need, its measuring accuracy is low, and detection speed is slow.There is personal error in relation because of luminous point and scale, and laser is easy to be subjected to external interference, and it is unsatisfactory in four-wheel position finder therefore to do light source applications with laser.
As everyone knows, laser has certain injury to human eyesight, so safety certifications such as UL, CE are difficult to pass through, American-European Japan eliminates already, just in the also local existence of China and part country in Southeast Asia.
Two, PSD:
PSD claims photoelectrical position sensor again.We know, does not use nearly all foreign four-wheel location, the machine that has only Korea S is in a large amount of uses, its principle of work is: when a certain position of the sensitive surface of PSD exists under the situation of illumination, its output current has respective change, thereby can obtain the illumination position, it is a kind of simulation (the DC/AC conversion has loss of data) device.Though by using some special technique can avoid these problems to a certain extent, limit it from principle and can only measure single luminous point and can not change.PSD can only use in industrial environment, and the temperature drift of PSD is serious and be subjected to the influence of ambient light in other words.Temperature variation can make the zero-bit of its output change tens millivolts, and the influence of light makes system's value instability, and these two are superimposed, and just make PSD lose measuring accuracy and stabilization of equipment performance, the killer that this point is PSD (indeterminacy, poor repeatability).
Three, CCD:
CCD is a kind of semiconductor digital element device (claiming the photoelectric coupling device again), and it is divided into two kinds of line array CCD and area array CCDs.It is the novel semi-conductor integrated optoelectronic device that grows up early 1970s, it is integrated thousands of independently photosensitive separately units on a silicon face, when illumination is mapped on the photosurface, be subjected to the photosensitive unit of light with the gathered light electronics, mode by displacement, with light quantity output, produce the information of optical position and light intensity, so CCD have characteristics such as measuring accuracy height (in 0.05 degree), no temperature coefficient, long service life.
Use CCD that good adaptive capacity to environment is arranged.Other all technology all have the restriction in the various uses, and such as can not using in the place of light complexity, can not have strong-electromagnetic field, temperature that too big variation or the like can not be arranged, and these all are the typical environment in the common workshop that repairs.Those can not open the door, can not window, morning the pleasantly cool data of measuring with noon the sky thermal measurement just different, the nigh requirement of big motor can not be arranged, for the four-wheel location, be a bit too really.Therefore the four-wheel position finder of American-European countries's production all adopts the CCD technology, and as battlebus, Pepsi despot, god of war etc., this also is enough to illustrate the advantage of CCD product.
Four, 3D:
The 3D metering system is to adopt image recognition technology, is contained in image information on the wheel reflector with the collection of CCD digital camera, to measure the relative accuracy of wheel, manually promotes wheel and moves forward and backward, and by CCD camera collection information, obtains its coordinate and angle.This is a kind of quite advanced metering system, and is American-European at present commonly used.But he has strict mechanical precision requirement to lifting machine and rotation angle disk etc., and present domestic lifting machine and rotation angle disk can't match, and influence detects effect, moreover the demarcation mode is loaded down with trivial details, costs an arm and a leg, and detection speed is unhappy, and after-sales service is slower, is not domestic main flow.
In view of this, those skilled in the art provide a kind of four-wheel position finder at the problems referred to above.
The utility model content
The utility model provides a kind of four-wheel position finder, has overcome the difficulty of prior art, adopts digital ccd image technology, and the high precision infrared emission makes the precision of images of collection higher, and antijamming capability is stronger.
The utility model adopts following technical scheme:
The utility model provides a kind of four-wheel position finder, image acquisition device and main control system when comprising four targets wheel clamping adults, two camera heads, high-precision real;
Described target wheel clamping adult is fixed on the described wheel, and described camera head is arranged on the both sides on the top of described main control system, and image acquisition device connects described camera head and main control system respectively, the two-way interactive data during described high-precision real.
Preferably, described camera head is the area array CCD high-resolution camera.
Preferably, also comprise two groups of LED infrared light supplies, be separately fixed at around the described camera head.
Preferably, described LED infrared light supply is distributed in around the described camera head in the form of a ring.
Preferably, described target wheel clamping adult comprises target and wheel folder, and the described folder of taking turns is fixed with wheel, and described target is arranged on the described wheel carrier rotationally.
Preferably, also comprise display, connect described main control system.
Owing to adopted above-mentioned technology, compared with prior art, four-wheel position finder of the present utility model adopts digital ccd image technology, and the high precision infrared emission makes the precision of images of collection higher, and antijamming capability is stronger.
Further specify the utility model below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the structural representation of the four-wheel position finder among the embodiment;
Fig. 2 is the measuring beam synoptic diagram of the four-wheel position finder among the embodiment;
Reference model synoptic diagram when Fig. 3 is zero point of the four-wheel position finder among the embodiment;
Fig. 4 is the reference model synoptic diagram of the band certain angle of the four-wheel position finder among the embodiment;
Fig. 5 be among the embodiment four-wheel position finder in signal timing diagram.
Reference numeral
1 is display;
2 is main control system;
3 image acquisition devices when being high-precision real;
4 is camera head;
5 is the LED infrared light supply;
6 are target wheel clamping adult.
Embodiment
Introduce a kind of specific embodiment of the present utility model below by Fig. 1 to 5.
Embodiment 1
As shown in Figure 1, a kind of four-wheel position finder of the present utility model, image acquisition device 3 and main control system 2 when comprising four targets wheel clamping adults 6, two image measuring devices 4, high-precision real; Described target wheel clamping adult 6 is fixed on the described wheel, and described camera head 4 is arranged on the both sides on the top of described main control system 2, and image acquisition device 3 connects described camera head 4 and main control system 2, two-way interactive data respectively during described high-precision real.
Described camera head 4 is area array CCD high-resolution cameras.Also comprise two groups of LED infrared light supplies 5, be separately fixed at around the described camera head 4 that described LED infrared light supply 5 is distributed in around the described camera head 4 in the form of a ring.Described target wheel clamping adult 6 comprises target and wheel folder, and the described folder of taking turns is fixed with wheel, and described target is arranged on the described wheel carrier rotationally.Also comprise display 1, connect described main control system 2.
The utility model is to adopt digital ccd image technology, horizontal 4 infrared emission of high precision, become the totally-enclosed light velocity measurement of 32 bundles at the car body quadrilateral, and utilize the mobile sensor technology to finish the 3D dynamic image and measure, therefore four-wheel position finder can be finished the mensuration of wheel positional parameters such as toe-in, camber, reverse caster, Kingpin inclination and thrust angle, wheel beat and wheelbase wheelspan length detection fast and accurately, and native system mainly is made up of image acquisition part and figure process software.
Image acquisition device, secondary light source and target when the dynamic measuring tech building block in the utility model is 2 groups of area array CCD camera heads, high-precision real.When car body moving forward and backward on the lifting machine platform, capture the icon deformation pattern of clamping on four reflecting plates of wheel.Mathematics three-dimensional model formula by setting up calculates the wheel angular error.
Native system contains 2 groups of high-resolution cameras, respectively four target images that are installed on the wheel is caught.Video camera is fixed within two shells.Video camera has carried out accurate demarcation when installing first, the user need not it to be demarcated in the use of four-wheel position finder again.
Each camera is furnished with one group of LED infrared light supply, is used to help video camera to catch the target image, is fixed on video camera and distributes in the form of a ring all around.System has four target wheel clamping adults, is the critical component of whole detection system, is the target of video camera monitoring, and the sign that wheel is installed is arranged at the target back side.When assembly wheel presss from both sides, it is suitable to need by adjusting knob the spacing of tire to be adjusted, and select not have the wheel rim place of shape damage or counterweight lead as the installation site, link to each other with automobile rim, the horizontal small end face that must guarantee four tires simultaneously earlier closely contacts with wheel rim, the locking wheel folder clamps the band of insuring to wheel simultaneously again.
Accessory in the utility model also comprises rotation angle disk, bearing circle fixed mount and braking vane fixed mount.
The CCD element is a digital element, and the CCD that is applied on the four-wheel position finder is generally linear array structure.Several thousand quick unit of relatively independent picture distribute point-blank with the neighbor distance of 13-14 micron.Irradiate light produces signal charge to the quick unit of picture, signal charge externally under the effect of pulse the micro processor of direct input pickup handle, thereby calculate the angle and the prenex angle of incident light accurately.
Each wheel all has measurement mechanism respectively in X-axis and Y-axis.With regard to an axle, it is existing emitter simultaneously, is used for launching the receiving trap reception of light by the opposite.Simultaneously receiving trap is arranged also, be used for receiving the light that the opposite launches.These two-way 8 bundle light do not disturb when working mutually, and 32 bundle light of four wheels have constituted the quadrilateral system of a sealing, as shown in Figure 2.
Infrared transmitting tube is contained in respectively on the different sensors, for example with the CCD receiver module: open the power valve of the near front wheel, the CCD module of off-front wheel receives, during zero point reference model as shown in Figure 3, when measurement presented certain angle, model was illustrated in fig. 4 shown below.
This moment, CCD received the variation of piece corresponding photosensitive position in the time of can passing through irradiate light, and drew concrete parameter and the data that CCD receives residing angle of piece and wheel alignment by the technology of control chip.
What this project adopted is that control chip is the C8051F120 of SILABS company, and it is a high speed processor, and dominant frequency can reach 100MHz, and a clock period be exactly a machine cycle, its port adopts cross bar switch flexible configuration.For the ccd sensor of using in this project is TCD1304AP, it is the line array CCD device of one 3648 pixel, and its key problem is her sequential configuration, and synchronizing signal Φ M is 2MHz, SH signal and ICG signal serve as that reference is configured with time-base signal Φ M, and sequential chart as shown in Figure 5.
In summary, owing to adopted above-mentioned technology, four-wheel position finder of the present utility model to adopt digital ccd image technology, the high precision infrared emission makes the precision of images of collection higher, and antijamming capability is stronger.
Above-described embodiment only is used to illustrate technological thought of the present utility model and characteristics, its purpose is to make those skilled in the art can understand content of the present utility model and implements according to this, can not only limit claim of the present utility model with present embodiment, be all equal variation or modifications of doing according to the spirit that the utility model disclosed, still drop in the claim of the present utility model.
Claims (6)
1. a four-wheel position finder is characterized in that: image acquisition device (3) and main control system (2) when comprising four target wheel clamping adults (6), two camera heads (4), high-precision real;
Described target wheel clamping adult (6) is fixed on the described wheel, described camera head (4) is arranged on the both sides on the top of described main control system (2), image acquisition device (3) connects described camera head (4) and main control system (2), two-way interactive data respectively during described high-precision real.
2. four-wheel position finder as claimed in claim 1 is characterized in that: described camera head (4) is the area array CCD high-resolution camera.
3. four-wheel position finder as claimed in claim 2 is characterized in that: also comprise two groups of LED infrared light supplies (5), be separately fixed at described camera head (4) on every side.
4. four-wheel position finder as claimed in claim 3 is characterized in that: described LED infrared light supply (5) is distributed in described camera head (4) on every side in the form of a ring.
5. four-wheel position finder as claimed in claim 1 is characterized in that: described target wheel clamping adult (6) comprises target and wheel folder, and the described folder of taking turns is fixed with wheel, and described target is arranged on the described wheel carrier rotationally.
6. four-wheel position finder as claimed in claim 1 is characterized in that: also comprise display (1), connect described main control system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206779079U CN202033203U (en) | 2010-12-21 | 2010-12-21 | Four-wheel position indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206779079U CN202033203U (en) | 2010-12-21 | 2010-12-21 | Four-wheel position indicator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033203U true CN202033203U (en) | 2011-11-09 |
Family
ID=44895497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206779079U Expired - Fee Related CN202033203U (en) | 2010-12-21 | 2010-12-21 | Four-wheel position indicator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033203U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721548A (en) * | 2012-05-18 | 2012-10-10 | 朱迪文 | 3D four-wheel aligner with no car pushing required |
| CN111678462A (en) * | 2020-05-26 | 2020-09-18 | 深圳市圳天元科技开发有限责任公司 | Four-wheel positioning system, four-wheel positioning method and computer readable storage medium |
-
2010
- 2010-12-21 CN CN2010206779079U patent/CN202033203U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721548A (en) * | 2012-05-18 | 2012-10-10 | 朱迪文 | 3D four-wheel aligner with no car pushing required |
| CN111678462A (en) * | 2020-05-26 | 2020-09-18 | 深圳市圳天元科技开发有限责任公司 | Four-wheel positioning system, four-wheel positioning method and computer readable storage medium |
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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: 20111109 Termination date: 20121221 |