Novel positioning optical measuring device without centering

Abstract

The utility model discloses a novel positioning optical measuring device without centering, which comprises a front target and a rear target, and first graph target mounting surfaces, second graph target mounting surfaces and positioning identification point mounting surfaces are arranged on target bodies of the front target and the rear target; a first target is arranged on the first graph target mounting surface, a second target is arranged on the second graph target mounting surface, and each of the first target and the second target comprises a plurality of circular optical identification points; a positioning identification target is arranged on the positioning identification point mounting surface, and a plurality of positioning identification points are arranged on the positioning identification target. According to the utility model, different structure arrangements of the front target (8-circle 9-circle) and the rear target (7-circle 8-circle) are adopted, different imaging distances of the front target and the rear target are adapted, a dual-camera imaging mode is combined, only two strip-shaped targets are needed, and a trapezoidal positioning identification point structure design is integrated, so that the target position identification is more accurate, and the number of the target can be rapidly identified; therefore, rapid and accurate identification and positioning are realized.

Description

Technical Field

[0001] This utility model relates to the field of automotive testing and repair equipment technology, and in particular to a novel optical measuring device that does not require centering. Background Technology

[0002] Automobiles are an important means of transportation in modern society, and timely maintenance and repair are essential to ensure safe driving. For example, inspecting the condition of axles using testing equipment is a common part of automobile inspection and repair. Current four-wheel alignment testing typically involves fixing optical target components to the wheels using positioning fixtures, then collecting relevant parameters using a positioning instrument. Specialized software algorithms then calculate the axle condition to assist in vehicle inspection and repair. The principle of four-wheel alignment testing mainly relies on cameras collecting reflected signals from optical targets, which are then processed by four-wheel alignment algorithm software to achieve the vehicle's four-wheel alignment. Current conventional four-wheel alignment testing is based on the alignment operation of optical target component fixtures, such as existing dual-three-dimensional 8-target patents. This not only requires a large number of optical targets but also necessitates alignment operations, resulting in numerous steps and low testing efficiency. With the advancement of four-wheel alignment detection technology, centerless four-wheel alignment detection has become possible. Correspondingly, centerless four-wheel alignment detection requires optical targets. How to design the structure of the optical targets so that the detection device can accurately detect and identify the target information is one of the key aspects of centerless four-wheel alignment detection. The optical targets of existing four-wheel alignment machines have not been able to achieve this function well and need to be improved and optimized. Summary of the Invention

[0003] This invention addresses the aforementioned background and problems existing in current technologies by providing a novel optical measurement device that eliminates the need for centering. The device includes a front target and a rear target. Each target has a first target mounting surface, a second target mounting surface, and a positioning identification point mounting surface. A first target is mounted on the first target mounting surface, and a second target is mounted on the second target mounting surface. Both the first and second targets contain a plurality of optical identification points. The number of optical identification points on the second target is greater than the number on the first target, and the number of optical identification points on the first and second targets on the front target is greater than the corresponding number of optical identification points on the rear target. A positioning identification target is mounted on the positioning identification point mounting surface, and the positioning identification target has a plurality of positioning identification points.

[0004] As a further explanation of this utility model, the optical recognition point is a circular optical recognition point, the first target on the front target contains 8 circular optical recognition points, the second target on the front target contains 9 circular optical recognition points; the first target on the rear target contains 7 circular optical recognition points, and the second target on the front target contains 8 circular optical recognition points.

[0005] Furthermore, the positioning and identification points on the positioning and identification target are trapezoidal positioning and identification points.

[0006] Furthermore, the number of trapezoidal positioning and identification points on the positioning and identification target is less than 7, and the number of trapezoidal positioning and identification points on the front target is less than the number of trapezoidal positioning and identification points on the front target.

[0007] Furthermore, the target bodies of the front and rear targets include arc edges and straight edges, with the straight edges located on the front side of the first target.

[0008] Furthermore, the first target mounting surface, the second target mounting surface, and the positioning identification point mounting surface are inclined backward.

[0009] Furthermore, the front and rear targets are provided with expansion target slots for mounting expansion targets, and the expansion targets contain several circular optical recognition points.

[0010] Furthermore, the extended target includes nine circular optical recognition points arranged in an array.

[0011] The beneficial effects of this utility model are:

[0012] This invention employs a novel optical target structure design, utilizing different structural settings for the front target (8 or 9 circles) and the rear target (7 or 8 circles) to accommodate different imaging distances. Combined with a dual-camera imaging method, only two strip targets are required, enabling the four-wheel alignment target to achieve lightweight design and a smaller footprint. Furthermore, it incorporates a trapezoidal positioning recognition point structure design. The deformation of the trapezoidal positioning recognition point after imaging can adapt to the position and angle of the first and second targets, making the target position recognition of the four-wheel alignment target more accurate and enabling rapid identification of the target number. This achieves fast and accurate identification and positioning, meeting the high-requirement automotive four-wheel alignment testing needs that do not require centering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the front target in an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of the overall structure of the target in an embodiment of the present invention;

[0015] Figure 3 This is an extended target assembly state diagram for an embodiment of this utility model.

[0016] Reference numerals: Front target 1, Rear target 2, First target 3, Second target 4, Circular optical recognition point 5, Positioning recognition target 6, Trapezoidal positioning recognition point 7, Arc edge 8, Straight edge 9, Extended target 10, Extended target slot 11. Detailed Implementation

[0017] Example:

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] As attached Figure 1-3 The optical measurement device shown is a novel positioning device that does not require centering. It includes a front target 1 and a rear target 2. Both the front target 1 and the rear target 2 are provided with a first target mounting surface, a second target mounting surface, and a positioning identification point mounting surface. A first target 3 is provided on the first target mounting surface, and a second target 4 is provided on the second target mounting surface. Both the first target 3 and the second target 4 contain a plurality of circular optical identification points 5. The number of circular optical identification points 5 on the second target 4 is greater than the number of circular optical identification points 5 on the first target 3, and the number of circular optical identification points 5 on the first target 3 and the second target 4 on the front target 1 is greater than the number of corresponding circular optical identification points 5 on the first target 3 and the second target 4 on the rear target 2. A positioning identification target 6 is provided on the positioning identification point mounting surface, and the positioning identification target 6 is provided with a plurality of positioning identification points. The optical target in this embodiment is used in conjunction with a four-wheel alignment instrument to achieve centerless positioning detection of wheel components. During detection, it is mounted and fixed to the wheels of the vehicle to be tested. The optical target mounted and fixed to the front wheel of the vehicle to be tested is called the front target 1, and the optical target mounted and fixed to the rear wheel of the vehicle to be tested is called the rear target 2. During positioning detection, camera groups located on both sides of the alignment instrument bracket collect the reflected signals of the optical target components. By using optical devices such as cameras and optical targets to capture images of the target objects, and using computer image processing technology to locate the target objects, high-precision positioning can be achieved, meeting many high-requirement application scenarios.

[0021] Specifically, as shown in the attached figures, in this embodiment, the first target 3 on the front target 1 includes 8 circular optical recognition points 5, and the second target 4 on the front target 1 includes 9 circular optical recognition points 5; the first target 3 on the rear target 2 includes 7 circular optical recognition points 5, and the second target 4 on the front target 1 includes 8 circular optical recognition points 5. In practical applications, the first target mounting surface, the second target mounting surface, and the positioning recognition point mounting surface are inclined backward. The first target 3 of the front target 1 includes 8 circular optical recognition points 5 arranged in a row, and the second target 4 of the front target 1 includes 9 circular optical recognition points 5 arranged in a row, as well as several trapezoidal positioning recognition points 7. By using different structural settings for the front target 1 (8 circles and 9 circles) and the rear target 2 (7 circles and 8 circles), different imaging distances of the front and rear targets 2 are adapted. Combined with the dual-camera imaging method, only two strip targets are needed, enabling the target structure to achieve lightweight design and a smaller footprint.

[0022] In a preferred embodiment, as shown in the accompanying drawings, the positioning and identification points on the positioning and identification target 6 are trapezoidal positioning and identification points 7. In this embodiment, a plurality of trapezoidal positioning and identification points 7 are specifically set. Specifically, the number of trapezoidal positioning and identification points 7 is less than 7, and the number of trapezoidal positioning and identification points 7 on the front target 1 is less than the number of trapezoidal positioning and identification points 7 on the rear target 2. For example, in some embodiments, 3 trapezoidal positioning and identification points 7 are set on the front target 1, and 6 trapezoidal positioning and identification points 7 are set on the rear target 2. By incorporating the trapezoidal structure design of the positioning and identification points 7, it is possible to adapt to the different imaging distances of the front and rear targets 2. Combined with the dual-camera imaging method, the deformation of the trapezoidal positioning and identification points 7 after imaging can adapt to the position and angle of the first target 3 and the second target 4, making the target position identification of the four-wheel positioning target more accurate, and enabling rapid identification of the target number to achieve rapid and accurate identification and positioning.

[0023] Specifically, as shown in the attached figures, in this embodiment, the target bodies of the front target 1 and the rear target 2 include an arc edge 8 and a straight edge 9. The straight edge 9 is located on the front side of the first target. This shape and structure is beneficial for measuring the forward extension angle and the maximum steering angle in four-wheel alignment testing.

[0024] In some embodiments, the front target 1 and the rear target 2 are further provided with expansion target slots 11 for installing expansion target 10. The expansion target 10 includes nine circular optical recognition points 5 arranged in an array. The expansion target 10 is installed and used in a detachable manner through the expansion target slots 11.

[0025] The above description only illustrates preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. In short, all changes made within the scope of the independent claims of the present invention are within the scope of protection of the present invention.

Claims

1. A novel optical measuring device for positioning without the need for centering, characterized in that: It includes a front target and a rear target, and each of the front and rear targets is provided with a first target mounting surface, a second target mounting surface, and a positioning identification point mounting surface; a first target is provided on the first target mounting surface, and a second target is provided on the second target mounting surface, and both the first target and the second target contain a number of optical identification points; The number of optical recognition points on the second target is greater than the number of optical recognition points on the first target, and the number of optical recognition points on the first and second targets on the front target is greater than the number of optical recognition points on the corresponding first and second targets on the rear target; a positioning recognition target is provided on the mounting surface of the positioning recognition point, and a number of positioning recognition points are provided on the positioning recognition target.

2. The optical measuring device for novel positioning without centering as described in claim 1, characterized in that: The optical recognition points are circular optical recognition points. The first target on the front target contains 8 circular optical recognition points, and the second target on the front target contains 9 circular optical recognition points. The first target on the rear target contains 7 circular optical recognition points, and the second target on the front target contains 8 circular optical recognition points.

3. The optical measuring device for novel positioning without centering as described in claim 1, characterized in that: The positioning and identification points on the positioning and identification target are trapezoidal positioning and identification points.

4. The optical measuring device for novel positioning without centering as described in claim 3, characterized in that: The number of trapezoidal positioning and identification points on the positioning and identification target is less than 7, and the number of trapezoidal positioning and identification points on the front target is less than the number of trapezoidal positioning and identification points on the front target.

5. The optical measuring device for novel positioning without centering according to claim 1, characterized in that: The front and rear targets include arc edges and straight edges, with the straight edges located on the front side of the first target.

6. The optical measuring device for novel positioning without centering according to claim 1, characterized in that: The first target mounting surface, the second target mounting surface, and the positioning identification point mounting surface are inclined backward.

7. The optical measuring device for novel positioning without centering according to claim 1, characterized in that: The front and rear targets are also provided with expansion target slots for installing expansion targets, and the expansion targets contain several circular optical recognition points.

8. The optical measuring device for novel positioning without centering according to claim 7, characterized in that: The extended target contains nine circular optical recognition points arranged in an array.

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