Passenger car tire wear degree inspection device based on binocular vision

Abstract

The utility model discloses a passenger car tire wear degree inspection device based on binocular vision, which comprises a tire and an arc-shaped plate, the arc-shaped plate is a dust blocking plate arranged below a fender, an avoiding space is reserved between the arc-shaped plate and the tire, and a binocular vision sensor is arranged between the arc-shaped plate and the tire as shown in the figure. The binocular vision sensor is arranged between the arc-shaped plate and the tire, a gap is reserved between the binocular vision sensor and the tire, abrasion with the tire is avoided, meanwhile, interference with the arc-shaped plate is avoided in the process of damping along with the tire, and after the binocular vision sensor is synchronously fixed to the outer side of the tire and the tire is abraded through the parallax of the binocular vision sensor, the tire can be prevented from being damaged. When the tire is worn, the thickness of the outer side wall of the tire is reduced, the distance between the tire and the binocular vision sensor is increased, the vision difference is reduced at the moment, the wear degree of the tire can be judged according to the value of the vision difference, and corresponding processing is carried out.

Description

TECHNICAL FIELD

[0001] A passenger car tire wear degree inspection device based on binocular vision. BACKGROUND

[0002] The automobile tire is one of the important components of the automobile, which directly contacts with the road surface and, together with the automobile suspension, mitigates the impact received by the automobile during driving, guarantees good riding comfort and driving smoothness of the automobile, guarantees good adhesion of the vehicle wheel and the road surface, improves the traction, braking and passing performance of the automobile, and bears the weight of the automobile. The important role of the tire on the automobile is increasingly valued by people. The passenger car is mainly used for carrying passengers and their luggage or temporary articles in design and technical characteristics, and has at most 9 seats including the driver seat. During the passenger carrying driving process, the driver seldom checks the tire working condition of the vehicle in detail. Therefore, during the long-time and long-distance driving of the passenger car in the city (without soil), the tire wear of the automobile easily causes the risk of tire burst, and further causes the injury of the passengers. SUMMARY

[0003] In order to overcome the defects of the prior art, the utility model provides a passenger car tire wear degree inspection device based on binocular vision, through the binocular vision sensor which is fixed synchronously with the outer side of the tire, the parallax of the binocular vision sensor is detected, the smaller the parallax is, the farther the object is, and when the wear degree of the tire is large, the distance between the binocular vision sensor and the tire is far, at this time, the parallax is small, and then the wear degree of the tire can be judged through the decreasing value range of the parallax.

[0004] The tire wear degree detection is divided into three aspects.

[0005] 1, the pattern depth detection, the binocular vision sensor randomly selects a plurality of points on the tire tread to measure the pattern depth, and different degrees of the pattern are displayed in different results on the vehicle-mounted computer. When the pattern depth is greater than 3.5mm, green is displayed, indicating safety, when the pattern depth is between 1.6-3.5mm, yellow is displayed, indicating that the tire needs to be replaced, and when the pattern depth is less than 1.6mm, red is displayed, and a warning is sent to the driver to replace the tire immediately.

[0006] 2, the pattern crack detection, after the image collected by the binocular vision camera is grayed, the image is segmented and detected through the edge detection technology based on the Canny operator, and whether the tread has cracks is determined. Different situations of the cracks are also displayed on the vehicle-mounted computer: no cracks, green is displayed, indicating safety; there are cracks within 6mm, yellow is displayed, suggesting that the driver replaces the tire; there are cracks greater than 6mm or many small cracks, red is displayed, and a warning is sent to the driver to replace the tire immediately;

[0007] 3. Foreign matter or block detection, binocular camera detects the tire tread, if there is a large block, display red on the vehicle computer, and suggest replacing immediately; if there are many stones, nails and other foreign matter stuck in the tire, display yellow, remind the driver to clean up; no or a small amount of stones, display green.

[0008] To solve the above technical problems, the utility model provides following technical scheme: a kind of passenger car tire wear degree inspection device based on binocular vision, including tire, arc plate, binocular vision sensor is arranged between the arc plate and tire, adjustable adjusting support is arranged between the binocular vision sensor and suspension, the adjusting support includes with the adjusting plate of suspension connecting rod fixed mounting, with the telescopic link of adjusting plate movable connection, the horizontal bar of vertical movable connection in telescopic link one end, the binocular vision sensor is fixed in the end of horizontal bar close to tire, the outside cover of binocular vision sensor is equipped with transparent protective cover, the outside of protective cover and being arranged below the lens of binocular vision sensor is equipped with the cover body wiper of protective cover cleaning, the cover body wiper includes rotatable and with the rubber strip of protective cover adhesion.

[0009] As a preferred technical scheme of the utility model, the telescopic link includes with the inner sleeve of adjusting plate movable connection, with the outer sleeve of inner sleeve movable sleeve joint, the horizontal bar is vertically set with outer sleeve.

[0010] As a preferred technical scheme of the utility model, the outer sleeve is opened with movable hole along the sliding direction of horizontal bar, and fastening screw rod is arranged between outer sleeve and inner sleeve, between outer sleeve and horizontal bar.

[0011] As a preferred technical scheme of the utility model, the inner sleeve is movably connected with adjusting screw rod on the side close to adjusting plate, and the adjusting plate is provided with through long slot, the adjusting screw rod is screwed with two nuts on both sides of adjusting plate.

[0012] As a preferred technical scheme of the utility model, the adjusting plate is fixedly installed with at least two clamps on the side close to suspension connecting rod.

[0013] As a preferred technical scheme of the utility model, the side of protective cover is fixedly installed with baffle.

[0014] As a preferred technical scheme of the utility model, the cover body wiper further includes motor fixed with protective cover, the output shaft end of motor is fixedly installed with the base of middle opening, the side of rubber strip close to protective cover is trapezoidal structure, and is elastically movably connected between base, the side of base close to protective cover is fixedly installed with cloth.

[0015] As a preferred embodiment of this utility model, at least four guide rods are fixedly installed on the side of the base near the rubber strip. The guide rods pass through the rubber strip and are movably connected. Several tension springs are provided between the base and the rubber strip.

[0016] As a preferred technical solution of this utility model, the base has a hollow cavity structure inside and a connecting pipe is provided on the outer side. A tee is installed at the end of the connecting pipe away from the base. Several water outlet holes communicating with the cavity are opened on the side of the base near the rag.

[0017] As a preferred embodiment of this utility model, the outer rim of the tire has at least one continuous rib-shaped pattern, and the binocular vision sensor is placed on one side directly above the rib-shaped pattern.

[0018] Compared with the prior art, the beneficial effects that this utility model can achieve are:

[0019] 1. By setting up a binocular vision sensor and fixing it synchronously with the outer side of the tire, the parallax of the binocular vision sensor is used to determine the degree of tire wear. As the tire wears, the outer wall thickness of the tire becomes thinner and the distance from the binocular vision sensor becomes farther. At this time, the parallax becomes smaller. The driver can then judge the degree of tire wear by observing the value of the parallax. The smaller the parallax is than the initial value, the higher the degree of tire wear.

[0020] 2. The adjustable bracket allows for the adjustment of tires of different sizes; the crossbar is inserted into the movable hole to adjust the horizontal direction of the binocular vision sensor, ensuring that the camera end of the binocular vision sensor is placed on the continuous tire surface.

[0021] 3. With the help of the transparent cover, the wiper blades are equipped with a cover. When the wiper blades are turned on, the water outlet wets the cloth. After the motor is powered on, it drives the rubber strip, base and cloth to swing back and forth at the bottom of the protective cover, which improves the cleaning effect on the bottom of the protective cover and ensures the normal use of the binocular vision sensor inside the protective cover. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the installation structure of the adjustment bracket and binocular vision sensor of this utility model;

[0024] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a schematic diagram of the exploded structure of the adjusting bracket of this utility model;

[0026] Figure 5 It is the structure schematic diagram of the cover wiper of the utility model;

[0027] Figure 6 It is the structure schematic diagram of the cover wiper of the utility model;

[0028] Figure 7 It is the structure schematic diagram of the cover wiper of the utility model;

[0029] Figure 8 It is the structure schematic diagram of the cover wiper of the utility model;

[0030] Figure 9 It is the structure schematic diagram of the cover wiper of the utility model; Figure 8 It is the structure schematic diagram of the cover wiper of the utility model;

[0031] Figure 10 It is the structure schematic diagram of the cover wiper of the utility model; Figure 8 It is the structure schematic diagram of the cover wiper of the utility model.

[0032] Wherein:

[0033] 1, binocular vision sensor;

[0034] 2, adjusting support;21, outer sleeve;211, movable hole;22, cross bar;23, inner sleeve;24, fastening screw;25, adjusting screw;251, nut;26, adjusting plate;261, through hole;27, hoop;

[0035] 3, protective cover;31, baffle;

[0036] 4, cover wiper;41, motor;42, base;421, connecting pipe;422, guide rod;423, tee;424, water outlet hole;43, rubber strip;44, cloth;45, tension spring;

[0037] 5, tire;

[0038] 6, arc plate. Embodiment

[0039] As Figures 1-10 shown, the utility model provides a kind of passenger car tire wear degree inspection device based on binocular vision, including tire 5, arc plate 6, arc plate 6 is installed the dust baffle below fender and keep between tire 5 and arc plate 6 and leave space, binocular vision sensor 1 is arranged between arc plate 6 and tire 5, as Figure 1As shown, the binocular vision sensor 1 is placed between the arc-shaped plate 6 and the tire 5 with a gap, avoiding abrasion with the tire 5 and interference with the arc-shaped plate 6 in the process of following the tire 5 and damping. The binocular vision sensor 1 is provided with an adjustable adjusting support 2 between the suspension, the adjusting support 2 includes an adjusting plate 26 fixedly installed with the suspension link, an extension rod movably connected with the adjusting plate 26, and a cross rod 22 movably connected with one end of the extension rod. The adjusting plate 26 is fixedly installed on the side of the suspension link fixed with the tire 5 and can follow the tire 5 in the process of bumping, avoiding the change of the distance between the binocular vision sensor 1 and the tire 5 affecting the accuracy of the measurement data. The extension rod can be adjusted for different sizes of the tire 5, and the angle between the adjusting plate 26 and the extension rod can be adjusted to adjust the binocular vision sensor 1 when fixed. The camera end of the binocular vision sensor 1 is placed on one side of the continuous tire surface through the cross rod 22, preventing the measurement error caused by the intermittent pattern. The binocular vision sensor 1 is fixed at one end of the cross rod 22 close to the tire 5. The outer cover of the binocular vision sensor 1 is provided with a transparent protective cover 3. Figure 1 As shown, the transparent protective cover 3 can prevent the camera from being damaged by water and debris brought up by the tire 5 during driving. The outer part of the protective cover 3 is provided with a cover wiper 4 below the lens of the binocular vision sensor 1 for cleaning the protective cover 3. When the protective cover 3 is blurred and affects the camera view, the rubber strip 43 of the cover wiper 4 can be rotated and attached to the protective cover 3 to clean the surface of the protective cover 3.

[0040] Preferably, the extension rod includes an inner sleeve 23 movably connected with the adjusting plate 26, and an outer sleeve 21 movably sleeved with the inner sleeve 23. The cross rod 22 is vertically arranged with the outer sleeve 21. The outer sleeve 21 is provided with a movable hole 211 along the sliding direction of the cross rod 22. The outer sleeve 21 and the inner sleeve 23, and the outer sleeve 21 and the cross rod 22 are provided with fastening screws 24. The inner sleeve 23 is movably connected with an adjusting screw 25 close to the adjusting plate 26. The adjusting plate 26 is provided with a through long hole 261. The adjusting screw 25 penetrates the long hole 261 and is threadedly connected with two nuts 251 arranged on both sides of the adjusting plate 26. The adjusting plate 26 is fixedly installed with at least two clamps 27 close to the suspension link. Figures 2-4As shown, the adjusting plate 26 is connected with the fixed end of the suspension connecting rod of the tire 5 through the clamp 27, and then when the tire 5 bounces, the telescopic rod and the binocular vision sensor 1 above can be driven synchronously through the connecting rod, so that the distance between the binocular vision sensor 1 and the tire axis can be kept unchanged, the angle of the telescopic rod can be adjusted through the adjusting screw 25 of the inner sleeve 23 support and the nut 251 placed on both sides of the adjusting plate 26, the inner sleeve 23 is inserted into the outer sleeve 21 to adjust the vertical height of the binocular vision sensor 1, and then the tire 5 of different sizes can be adjusted and used; the horizontal rod 22 is inserted into the movable hole 211 to adjust the horizontal direction of the binocular vision sensor 1, and the camera end of the binocular vision sensor 1 is placed on the surface of the continuous tire 5.

[0041] Preferably, the side of the protective cover 3 is fixedly provided with a baffle 31, as shown in Figure 1 and 5 As shown, the baffle 31 is placed on the left side of the protective cover 3 (such as the lower left in Figure 5 When the tire 5 is driven, it can play the role of a fender to improve the surface cleaning of the protective cover 3.

[0042] Preferably, the cover body wiper 4 further comprises a motor 41 fixedly connected with the protective cover 3, an intermediate opening base 42 fixedly connected with the output shaft end of the motor 41, a trapezoidal structure rubber strip 43 close to one side of the protective cover 3 and elastically connected with the base 42, a cloth 44 fixedly connected with one side of the base 42 close to the protective cover 3, four guide rods 422 fixedly connected with one side of the base 42 close to the rubber strip 43, and the guide rods 422 penetrating through the rubber strip 43 and being movably connected, which can ensure the normal elastic cooperation between the rubber strip 43 and the tension spring 45, and facilitate the synchronous rotation of the rubber strip 43 through the base 42. Figures 6-10 As shown, the shell of the motor 41 is fixedly connected with the outside of the protective cover 3, one end of the output shaft is fixedly connected with the base 42 in a vertical state, the rubber strip 43 has a trapezoidal structure with a narrow upper part and a wide lower part, which improves the cleaning effect of the protective cover 3, and the rubber strip 43 is placed at the bottom of the opening with sufficient space, and the rubber strip 43 can be in close contact with the protective cover 3 under the action of the tension spring 45, which improves the cleaning effect of the protective cover 3, and the cleaning effect of the protective cover 3 is improved under the action of the cloth 44 when the motor 41 is driven.

[0043] Preferably, the inside of the base 42 is a cavity structure and one side of the outside is provided with a connecting pipe 421, the connecting pipe 421 is provided with a three-way pipe 423 at the end away from the base 42, and a plurality of water outlets 424 are formed in the side of the base 42 close to the cloth 44 and communicated with the cavity, as shown in Figures 7-9As shown, one end of the tee joint 423 is connected with the connecting pipe 421, and the other two ends are connected with the water pipes for supplying water to the wiper from the vehicle glass water tank, and the water pipes are connected with the spray heads of the vehicle wiper (i.e. after cutting the original water supply pipe of the wiper, the two ends of the cut pipe are connected with the other two ends of the tee joint 423, and then the water can be supplied to the cavity of the base 42 through the opening of the wiper of the vehicle, and finally the cloth 44 is soaked through the water outlet hole 424, so as to improve the cleaning effect on the bottom of the protective cover 3 (the connection mode is a conventional technical means in the technical field, and details are not described herein).

[0044] Preferably, the outer circle of the tire 5 has at least one continuous rib pattern, and the binocular vision sensor 1 is arranged on the side above the rib pattern, as shown in Figure 1 As shown, the outer circle of the tire 5 has a continuous rib pattern, so as to prevent the intermittent pattern from affecting the parallax data during monitoring by the binocular vision sensor 1.

[0045] In use, the adjusting plate 26 is fixed on the fixed end of the suspension connecting rod of the tire 5 through the clamp 27, and the connecting rod can drive the telescopic rod and the binocular vision sensor 1 above the telescopic rod to move synchronously, then the two fastening screws 24 are loosened to adjust the outer sleeve 21, and the camera end of the binocular vision sensor 1 is arranged above the outer circle of the tire 5 and has sufficient space with the arc-shaped plate 6, the outer sleeve 21 and the inner sleeve 23 are fixed by clockwise tightening, then the cross rod 22 is adjusted, so that the camera part of the binocular vision sensor 1 is arranged above the continuous rib pattern of the tire 5, and the fastening screw 24 is tightened clockwise, so as to fix the device, and the binocular vision sensor 1, the motor 41 and the storage battery of the vehicle are connected in a conventional electrical connection mode to provide power for them, and the distance between the binocular vision sensor 1 and the axis of the tire 5 is constant, and the new tire 5 is used as a standard, the binocular vision sensor 1 is not worn by the new tire 5, at this time, the outer side of the new tire 5 is close to the binocular vision sensor 1, and the initial value of the visual difference of the binocular vision sensor 1 is the maximum, and then when the vehicle is driven, the outer side wall of the tire 5 is thinned and the distance between the binocular vision sensor 1 is far, and at this time, the visual difference is small, and then the driver can judge the wear degree of the tire 5 by observing the value of the visual difference, and the smaller the visual difference is than the initial value, the higher the wear degree of the tire 5 is.

[0046] The motor 41 is preferably a servo motor.

[0047] In the utility model, unless another definite provision and limitation, first feature is on second feature "on" or "under" can include first and second feature direct contact, also can include first and second feature is not direct contact but is through additional feature between them contact. Moreover, first feature is on second feature "on", "above" and "on" include first feature is on second feature directly and obliquely, or only indicate first feature horizontal height is higher than second feature. First feature is on second feature "under", "below" and "under" include first feature is on second feature directly and obliquely, or only indicate first feature horizontal height is less than second feature.

[0048] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and are not intended to limit the utility model. Without departing from the spirit and scope of the utility model, various changes and improvements can be made to the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A passenger vehicle tire wear degree inspection device based on binocular vision, comprising a tire (5) and an arc-shaped plate (6), characterized in that: The arc-shaped plate (6) is provided with a binocular vision sensor (1) between the tire (5), the binocular vision sensor (1) is provided with an adjustable adjusting support (2) between the suspension, the adjusting support (2) includes an adjusting plate (26) fixedly installed with the suspension connecting rod, a telescopic rod movably connected with the adjusting plate (26), and a cross bar (22) movably connected with the telescopic rod at one end, the binocular vision sensor (1) is fixed at one end of the cross bar (22) close to the tire (5), the binocular vision sensor (1) is provided with a transparent protective cover (3) outside, the protective cover (3) is provided with a cover body wiper (4) for cleaning the protective cover (3) and is arranged below the lens of the binocular vision sensor (1), and the cover body wiper (4) includes a rubber strip (43) rotatable and attached to the protective cover (3).

2. The passenger vehicle tire wear checking device based on binocular vision according to claim 1, characterized in that: The telescopic rod includes an inner sleeve (23) movably connected with the adjusting plate (26) and an outer sleeve (21) movably sleeved with the inner sleeve (23), and the cross bar (22) is vertically arranged with the outer sleeve (21).

3. The passenger vehicle tire wear checking device based on binocular vision according to claim 2, characterized in that: The outer sleeve (21) is provided with a movable hole (211) along the sliding direction of the cross bar (22), and the outer sleeve (21) and the inner sleeve (23) and the outer sleeve (21) and the cross bar (22) are provided with fastening screws (24).

4. The passenger vehicle tire wear checking device based on binocular vision according to claim 2, characterized in that: The inner sleeve (23) is movably connected with an adjusting screw (25) on one side close to the adjusting plate (26), and the adjusting plate (26) is provided with a through long hole (261), the adjusting screw (25) penetrates the long hole (261) and is threadedly connected with two nuts (251) arranged on both sides of the adjusting plate (26).

5. The passenger vehicle tire wear checking device based on binocular vision according to claim 1, characterized in that: The adjusting plate (26) is fixedly installed with at least two clamps (27) on one side close to the suspension connecting rod.

6. The passenger vehicle tire wear checking device based on binocular vision according to claim 1, characterized in that: One side of the protective cover (3) is fixedly installed with a baffle (31).

7. The passenger vehicle tire wear checking device based on binocular vision according to claim 1, characterized in that: The cover body wiper (4) further includes a motor (41) fixed with the protective cover (3), a base (42) with an opening in the middle is fixedly installed at the output shaft end of the motor (41), one side of the rubber strip (43) close to the protective cover (3) is a trapezoidal structure and is elastically movably connected with the base (42), and a cloth (44) is fixedly installed on one side of the base (42) close to the protective cover (3).

8. The passenger vehicle tire wear checking device based on binocular vision according to claim 7, characterized in that: At least four guide rods (422) are fixedly installed on one side of the base (42) close to the rubber strip (43), the guide rods (422) penetrate the rubber strip (43) and are movably connected, and a plurality of tension springs (45) are arranged between the base (42) and the rubber strip (43).

9. The passenger vehicle tire wear checking device based on binocular vision according to claim 7, characterized in that: The base (42) is a hollow structure and is provided with a connecting pipe (421) on one side, a tee joint (423) is installed at one end of the connecting pipe (421) away from the base (42), and a plurality of water outlet holes (424) are arranged on one side of the base (42) close to the cloth (44) and are in communication with the cavity.

10. The passenger vehicle tire wear checking device based on binocular vision according to claim 1, characterized in that: The outer ring of the tire (5) is provided with at least one continuous rib pattern, and the binocular vision sensor (1) is arranged above the rib pattern.

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