Test fixture
By designing a multi-dimensional testing fixture, the problem of poor versatility of ultrasonic sensor testing devices was solved, realizing multi-dimensional field-of-view detection of ultrasonic sensors, improving the consistency of detection accuracy and obstacle avoidance performance, and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HANYANG TECHNOLOGY CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-31
AI Technical Summary
Existing ultrasonic sensor detection devices have poor versatility and cannot achieve multi-dimensional detection, resulting in inconsistent obstacle avoidance functions of robots, increased detection blind spots, and even obstacle avoidance failure.
A test fixture was designed, including a base, a support component, and first and second adapters, which are connected by magnetic components or plug slots. It supports multi-dimensional field-of-view range detection of the test piece, and combines a laser to provide a reference line to realize multi-dimensional field-of-view detection of the test piece. The adapters can be replaced according to different models and sizes.
This technology enables multi-dimensional field-of-view range detection using ultrasonic sensors, improving the versatility and accuracy of detection, reducing the cost of detection equipment, and ensuring the consistency and reliability of obstacle avoidance performance.
Smart Images
Figure CN224581701U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of ultrasonic sensor detection technology, and in particular to a testing fixture. Background Technology
[0002] Ultrasonic sensors are widely used in near-to-medium range obstacle detection in robots and other equipment due to their low cost, simple structure, and strong distance detection capabilities. However, in practical applications, ultrasonic sensors from different batches or brands exhibit significant individual differences in key parameters such as the ultrasonic field of view. If these sensors are assembled without testing, it can lead to inconsistent obstacle avoidance performance in the robot as a whole, increased blind spots, or even obstacle avoidance failure.
[0003] In related technologies, ultrasonic sensor detection devices have poor versatility and cannot achieve multi-dimensional detection of the ultrasonic sensor's field of view. Utility Model Content
[0004] This application provides a testing fixture to achieve multi-dimensional detection of the field of view range of an ultrasonic sensor.
[0005] This application provides a test fixture, including: Base; The supporting component is slidably mounted on one side of the base along the first direction; A first adapter and a second adapter are detachably connected to the side of the support assembly opposite to the base. The first adapter is provided with a first assembly cavity, and the second adapter is provided with a second assembly cavity. The first assembly cavity is configured to connect to the device under test and to make the emission axis of the device under test parallel to a second direction. The second assembly cavity is configured to connect to the device under test and to make the emission axis of the device under test parallel to a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.
[0006] In some possible implementations, the side of the support assembly facing away from the base is provided with a first magnetic element, and the side of the first adapter facing away from the first assembly cavity and the side of the second adapter facing away from the second assembly cavity are both provided with second magnetic elements, and one of the first magnetic elements is magnetically connected to the two second magnetic elements. And / or, the side of the support component opposite to the base is provided with a plug slot, and one of the first adapter and the second adapter is inserted into the plug slot.
[0007] In some possible implementations, the first assembly cavity includes a first receiving portion and a first guide groove portion, the first guide groove portion being located on one side of the first receiving portion and communicating with the first receiving portion, the extension direction of the first guide groove portion being parallel to the third direction.
[0008] In some possible implementations, the first adapter is further provided with a first support plate portion, which is located below the first receiving portion in the direction of gravity.
[0009] In some possible implementations, the base is provided with a slide rail parallel to the first direction on the side facing the support component, a slider is slidably mounted on the slide rail, and the support component is fixedly connected to the side of the slider opposite to the slide rail.
[0010] In some possible implementations, a scale is provided on the side of the base facing the slide rail or on the side of the slide rail away from the base, the scale extending along the first direction; And / or, the test fixture further includes two limiting blocks, which protrude from the side of the slide rail away from the base and are respectively disposed at both ends of the slide rail along the first direction.
[0011] In some possible implementations, the test fixture further includes a first reference member and a second reference member, wherein the axis of the first reference member is parallel to the third direction, and the axis of the second reference member is parallel to the second direction.
[0012] In some possible implementations, the first reference element and / or the second reference element includes a laser.
[0013] In some possible implementations, the support assembly includes a first fixing member and a second fixing member, the first fixing member being slidably mounted on the base along the first direction, the second fixing member being fixedly connected to the side of the first fixing member opposite to the base, and either the first adapter or the second adapter being detachably connected to the side of the second fixing member opposite to the first fixing member. The first reference member is mounted on the side of the first fixing member facing the second fixing member, and the second reference member is mounted on the end of the second fixing member close to the first fixing member.
[0014] In some possible implementations, the second fastener has a cable routing groove on the side facing the first fastener.
[0015] The beneficial effects of this application are as follows: The test fixture provided by this application can be used simultaneously for the field of view range detection when the emission axis of the test piece is parallel to the second direction and when the emission axis of the test piece is parallel to the third direction. This enables multi-dimensional field of view range detection of the test piece. At the same time, the first and second adapters can be replaced according to different models and sizes of ultrasonic sensors, which has higher versatility, a wider detection range, and can also reduce the cost of ultrasonic sensor testing equipment. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A three-dimensional structural schematic diagram of the test fixture in some embodiments is shown; Figure 2 A top view of the test fixture is shown in some embodiments; Figure 3 A partial exploded structural diagram of the test fixture is shown in some embodiments; Figure 4 A cross-sectional structural schematic diagram of the second fastener in some embodiments is shown; Figure 5 A schematic diagram of the structure of the first adapter in some embodiments is shown; Figure 6 The diagram shows a schematic of the structure in some embodiments where the component to be tested is installed in the first adapter. Figure 7 A schematic diagram of the structure of the second adapter is shown in some embodiments; Figure 8 A schematic diagram of the structure in some embodiments showing the component to be tested mounted on the second adapter is shown.
[0018] Explanation of key component symbols: 1000-Test Fixture; 110 - Base; 120 - Slide rail; 130 - Slider; 140 - Limit block; 200 - Load-bearing component; 210 - First fastener; 220 - Second fastener; 221 - Insertion slot; 222 - Assembly hole; 223 - Wiring channel; 310 - First adapter seat; 311 - First assembly cavity; 3111 - First receiving portion; 3112 - First guide groove portion; 312 - First support plate portion; 320 - Second adapter seat; 321 - Second assembly cavity; 3211 - Second receiving portion; 3212 - Second guide groove portion; 322 - Second support plate portion; 410 - First reference component; 420 - Second reference component; 510 - First magnetic component; 520 - Second magnetic component; 2000 - Item to be inspected; X - First direction; Z - Second direction; Y - Third direction. Detailed Implementation
[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0024] like Figure 1As shown, the embodiment provides a test fixture 1000, which can be used to detect the field of view of an ultrasonic sensor. The test fixture 1000 has a first direction X, a second direction Z, and a third direction Y that are perpendicular to each other.
[0025] like Figure 1 and Figure 7 As shown, in some embodiments, the test fixture 1000 may include a base 110, a support assembly 200, a first adapter 310, and a second adapter 320. The support assembly 200 is slidably mounted on one side of the base 110 along a first direction X. One of the first adapter 310 and the second adapter 320 is detachably connected to the side of the support assembly 200 opposite to the base 110. Furthermore, the first adapter 310 is provided with a first assembly cavity 311, which can be used to accommodate the test piece 2000 and ensure that the emission axis of the test piece 2000 is parallel to a second direction Z. The second adapter 320 is provided with a second assembly cavity 321, which can also be used to accommodate the test piece 2000 and ensure that the emission axis of the test piece 2000 is parallel to a third direction Y. The test piece 2000 may be an ultrasonic sensor.
[0026] In this embodiment, when testing the test piece 2000 using the test fixture 1000, the first adapter 310 can be detachably connected to the side of the carrier assembly 200 away from the base 110, and the test piece 2000 can be installed in the first assembly cavity 311 of the first adapter 310. At this time, the emission axis of the test piece 2000 can be parallel to the second direction Z. A target object is placed such that the distance between the target object and the test piece 2000 in the second direction Z is a first preset detection reference distance. Then, the carrier assembly 200 is moved along the first direction X, and the test piece 2000 is moved along the first direction X via the first adapter 310. This allows for the detection of the field of view range of the test piece 2000 when the emission axis is parallel to the second direction Z. The target object can be a white polyvinyl chloride (PVC) pipe.
[0027] Afterwards, the first adapter 310 can be detached from the carrier assembly 200, and the second adapter 320 can be detachably installed on the side of the carrier assembly 200 away from the base 110. The component to be tested 2000 is then installed in the second assembly cavity 321 of the second adapter 320. At this time, the emission axis of the component to be tested 2000 can be parallel to the third direction Y. A target object is placed so that the distance between the target object and the component to be tested 2000 in the third direction Y is the second preset detection reference distance. Then, the carrier assembly 200 is moved along the first direction X, and the component to be tested 2000 is moved along the first direction X through the second adapter 320. This allows for the detection of the field of view range of the component to be tested 2000 when the emission axis is parallel to the third direction Y.
[0028] Therefore, the test fixture 1000 provided in this application embodiment can be used simultaneously for field-of-view range detection when the emission axis of the test piece 2000 is parallel to the second direction Z and when the emission axis of the test piece 2000 is parallel to the third direction Y. This enables multi-dimensional field-of-view range detection of the test piece 2000. At the same time, the first adapter 310 and the second adapter 320 can be replaced according to different models and sizes of ultrasonic sensors, which has higher versatility, a wider detection range, and can also reduce the cost of ultrasonic sensor testing equipment.
[0029] like Figure 1 and Figure 2 As shown, in some embodiments, a slide rail 120 parallel to the first direction X may be configured on one side of the base 110. The slide rail 120 may be fixedly connected to the base 110 by means of bolts or welding. A slider 130 is slidably mounted on the side of the slide rail 120 opposite to the base 110, and the slider 130 may slide along the slide rail 120, that is, the slider 130 may slide along the first direction X. In the embodiments, the bearing component 200 may be fixedly connected to the side of the slider 130 opposite to the base 110, thereby enabling the bearing component 200 to be slidably mounted on the base 110 along the first direction X.
[0030] In some embodiments, during the detection process, the slider 130 can be slid along the slide rail 120 by manual operation or linear motor drive.
[0031] In some embodiments, a scale (not shown) is also provided on the side of the base 110 facing the slide rail 120. The scale can extend along the first direction X, thereby facilitating the identification of the moving position of the support component 200 and enabling visualization of the field of view. In some embodiments, the 0 position of the scale can be located at the center of the base 110 along the first direction X, and the numerical markings of the scale can gradually increase towards both ends of the base 110. Furthermore, the accuracy of the scale is mm.
[0032] In other embodiments, the 0 position of the scale may also be located at one end of the base 110 along the first direction X, and the numerical markings of the scale may gradually increase towards the other end.
[0033] In other embodiments, a scale may be disposed on the side surface of the slide rail 120 opposite to the base 110 and extend along a first direction X.
[0034] like Figure 1As shown, in some embodiments, the test fixture 1000 further includes two limiting blocks 140. The two limiting blocks 140 protrude from the side of the slide rail 120 opposite to the base 110, and are respectively disposed at both ends of the slide rail 120 along a first direction X, and are symmetrically arranged relative to the 0 position of the scale. Furthermore, the limiting blocks 140 can be fixedly disposed relative to the slide rail 120. Thus, the movement range of the support assembly 200 can be limited by the two limiting blocks 140.
[0035] In some embodiments, the limiting block 140 can be fixedly connected to the base 110 or the slide rail 120 by means of screw connection, welding or snap-fit.
[0036] like Figures 1 to 3 As shown, in some embodiments, the supporting component 200 may include a first fixing member 210 and a second fixing member 220. The first fixing member 210 may generally be a plate-like structure perpendicular to the third direction Y. The first fixing member 210 can be connected to the side of the slider 130 away from the base 110 by means of bolts, welding, or snap-fit, that is, the first fixing member 210 is fixedly disposed relative to the slider 130. Therefore, when the slider 130 slides along the slide rail 120, it can drive the first fixing member 210 to move synchronously along the first direction X.
[0037] In other embodiments, the first fastener 210 may also be a block structure or a frame structure.
[0038] In some embodiments, the second fixing member 220 may be a square block structure. The second fixing member 220 may be connected to the side of the first fixing member 210 away from the slider 130 by means of bolt connection, snap-fit or welding, that is, the second fixing member 220 is fixedly set relative to the first fixing member 210.
[0039] In other embodiments, the second fastener 220 and the first fastener 210 may also be an integral structure. Alternatively, the second fastener 220 and the first fastener 210 may be connected by magnetic attraction.
[0040] like Figure 1 , Figure 3 and Figure 4 As shown, in some embodiments, the test fixture 1000 further includes a first reference member 410 and a second reference member 420. The axis of the first reference member 410 may be parallel to a third direction Y, and the axis of the second reference member 420 may be parallel to a second direction Z. In some embodiments, both the first reference member 410 and the second reference member 420 may be point lasers or line lasers. Accordingly, the first reference member 410 may be a horizontal laser, and the second reference member 420 may be a vertical laser.
[0041] In other embodiments, the first reference member 410 and the second reference member 420 may also be selected from structures such as a rod. Accordingly, the first reference member 410 may be a rod parallel to the third direction Y, and the second reference member 420 may be a rod parallel to the second direction Z.
[0042] In some embodiments, the first reference member 410 can be fixed to the side of the first fixing member 210 facing the second fixing member 220 by means of screwing or snap-fitting, and the first reference member 410 and the second fixing member 220 can be offset in the second direction Z. The transmitting end of the first reference member 410 can be away from the first fixing member 210.
[0043] In some embodiments, the second reference member 420 can be fixedly installed on the end of the second fixing member 220 near the first fixing member 210. Correspondingly, the end of the second fixing member 220 near the first fixing member 210 may have a mounting hole 222 for accommodating the second reference member 420, and the mounting hole 222 can penetrate the second fixing member 220 along the second direction Z. The second reference member 420 can be accommodated in the mounting hole 222 and can be connected to the inner wall of the mounting hole 222 by means of screwing or snap-fitting, thereby realizing the fixed connection between the second reference member 420 and the second fixing member 220. In addition, the transmitting end of the second reference member 420 can be disposed facing the lower side of the second fixing member 220.
[0044] In other embodiments, the transmitting end of the second reference member 420 may also be positioned facing the upper side of the second fixing member 220 and is not obstructed by the first reference member 410.
[0045] During testing, the first reference element 410 can be used to emit a laser beam parallel to the third direction Y, serving as a reference line in the third direction Y to locate the target object and conveniently define the horizontal emission angle of the test piece 2000. The second reference element 420 can be used to emit a laser beam parallel to the second direction Z, serving as a reference line in the second direction Z to locate the target object and conveniently define the vertical emission angle of the test piece 2000. The axis of the first reference element 410 can refer to the optical axis of the laser beam emitted by the first reference element 410, and the axis of the second reference element 420 can refer to the optical axis of the laser beam emitted by the second reference element 420.
[0046] like Figure 3 and Figure 4 As shown, in some embodiments, the second fixing member 220 is further provided with a wiring groove 223 on the side facing the first fixing member 210, which can be used to accommodate the wires connected to the second reference member 420. In the embodiments, the wiring groove 223 can penetrate the second fixing member 220 along the second direction Z, and the side of the wiring groove 223 facing the first fixing member 210 can be configured as an opening.
[0047] like Figure 3 As shown, in some embodiments, both the first adapter 310 and the second adapter 320 can be detachably connected to the side of the second fixing member 220 opposite to the first fixing member 210 via magnetic connection. In some embodiments, a first magnetic element 510 is disposed on the side of the second fixing member 220 opposite to the first fixing member 210, and the second magnetic element 520 can be embedded in the second fixing member 220 and can be fixedly connected to the second fixing member 220 by means of screw connection, interference fit or adhesive bonding.
[0048] In some embodiments, a second magnetic element 520 is disposed on the side of the first adapter 310 facing the support assembly 200. The second magnetic element 520 can be embedded in the side of the first adapter 310 facing the support assembly 200, and the second magnetic element 520 can be fixedly connected to the first adapter 310 by means of screw connection, interference fit, or adhesive bonding. In some embodiments, the surface of the second magnetic element 520 facing the support assembly 200 can be flush with the surface of the first adapter 310 facing the support assembly 200.
[0049] In some embodiments, a second magnetic element 520 is also disposed on the side of the second adapter 320 facing the support assembly 200. The second magnetic element 520 can be embedded in the side of the second adapter 320 facing the support assembly 200, and the second magnetic element 520 can be fixedly connected to the second adapter 320 by means of screw connection, interference fit, or bonding. In some embodiments, the surface of the second magnetic element 520 facing the support assembly 200 can be flush with the surface of the second adapter 320 facing the support assembly 200.
[0050] In some embodiments, both the first magnetic element 510 and the second magnetic element 520 can be magnets, and the polarity of the end of the first magnetic element 510 away from the base 110 is opposite to the polarity of the end of the second magnetic element 520 facing the support assembly 200.
[0051] In other embodiments, the first magnetic element 510 may be a magnet, and the second magnetic element 520 may be a metal element capable of being magnetically connected to the magnet. Alternatively, the second magnetic element 520 may be a magnet, and the first magnetic element 510 may be a metal element capable of being magnetically connected to the magnet.
[0052] In some embodiments, the second fixing member 220 is further provided with a insertion groove 221 on the side opposite to the first fixing member 210, and the insertion direction of the insertion groove 221 can extend along the third direction Y. The first magnetic member 510 can be embedded in the bottom of the insertion groove 221, and the surface of the first magnetic member 510 opposite to the base 110 can be flush with the bottom of the insertion groove 221. The first adapter 310 and the second adapter 320 can be selectively inserted into the insertion groove 221. Thus, the reliability and stability of the connection between the first adapter 310 and the second adapter 320 and the second fixing member 220 can be improved.
[0053] In other embodiments, the side of the second fixing member 220 facing away from the first fixing member 210 may only have a plug-in slot 221 or a first magnetic element 510. Both the first adapter 310 and the second adapter 320 can be detachably connected to the second fixing member 220 by plugging or magnetic connection. When the first adapter 310 and the second adapter 320 are connected to the second fixing member 220 by plugging, when the first adapter 310 (or the second adapter 320) is inserted into the plug-in slot 221, the first adapter 310 (or the second adapter 320) can fit tightly against the inner wall of the plug-in slot 221, which can ensure the connection stability between the first adapter 310 (or the second adapter 320) and the second fixing member 220.
[0054] In other embodiments, the first adapter 310 and the second adapter 320 can also be detachably connected to the second fastener 220 by means of screw connection or snap-fit, so as to use the first adapter 310 and the second adapter 320 alternately.
[0055] like Figure 5 and Figure 6 As shown, in some embodiments, the first assembly cavity 311 may include a first receiving portion 3111 and a first guide groove portion 3112. The extension direction of the first guide groove portion 3112 may be parallel to the third direction Y, and the first guide groove portion 3112 may be located on one side of the first receiving portion 3111 and communicate with the first receiving portion 3111. The first receiving portion 3111 can be used to receive the main structure of the component to be tested 2000, and the first guide groove portion 3112 can be used to receive the connecting ear of the component to be tested 2000. Furthermore, the sides of the first receiving portion 3111 and the first guide groove portion 3112 opposite to the support assembly 2000 are both configured as openings, which facilitates the insertion of the component to be tested 2000 into the first assembly cavity 311 along the third direction Y. When the component to be tested 2000 is assembled in the first assembly cavity 311, the transmitting axis of the component to be tested 2000 can be made parallel to the second direction Z, and the transmitting end of the component to be tested 2000 can be aligned with the transmitting end of the first reference component 410. Furthermore, the emission axis of the test piece 2000 is aligned with the axis of the first reference piece 410 in the first direction X.
[0056] In some embodiments, the first assembly cavity 311 may include two first guide grooves 3112, which are respectively disposed on both sides of the first receiving portion 3111 along the first direction X and are symmetrically arranged. Correspondingly, the two connecting ears symmetrically arranged in the test piece 2000 can be received in the two first guide grooves 3112 one by one.
[0057] In some embodiments, the first adapter 310 further includes a first support plate portion 312, which may be located below the first receiving portion 3111 in the direction of gravity, and can provide support and limiting function for the test piece 2000 to ensure the installation stability of the test piece 2000.
[0058] like Figure 7 and Figure 8 As shown, in some embodiments, the second assembly cavity 321 may include a second receiving portion 3211 and a second guide groove portion 3212. The extension direction of the second guide groove portion 3212 may be parallel to the second direction Z, and the second guide groove portion 3212 may be located on one side of the second receiving portion 3211 and communicate with the second receiving portion 3211. The second receiving portion 3211 can be used to receive the main structure of the component to be tested 2000, and the second guide groove portion 3212 can be used to receive the connecting ear of the component to be tested 2000. Furthermore, along the second direction Z, one end of the second receiving portion 3211 and one end of the second guide groove portion 3212 are both configured as open, and the openings face the same direction, which facilitates the insertion of the component to be tested 2000 into the second assembly cavity 321 along the second direction Z. When the test piece 2000 is assembled in the second assembly cavity 321, the transmitting axis of the test piece 2000 can be made parallel to the third direction Y, and the transmitting end of the test piece 2000 can be aligned with the transmitting end of the second reference piece 420, and the transmitting axis of the test piece 2000 and the axis of the second reference piece 420 can be aligned in the first direction X.
[0059] In some embodiments, the second adapter 320 further includes a second support plate portion 322, which may be located below the second receiving portion 3211 in the direction of gravity, and can provide support and limiting function for the test piece 2000 to ensure the installation stability of the test piece 2000.
[0060] like Figures 1 to 8 As shown in the embodiment, when testing the workpiece 2000 using the test fixture 1000, the following steps may be included: Step 1: Prepare the target object.
[0061] The target object can be a PVC pipe, which can be used as a test target for reflecting ultrasonic waves. The axis of the target object is perpendicular to the emission direction of the ultrasonic waves of the test piece 2000, and the target object is opposite to the emitting end of the test piece 2000.
[0062] Step 2: Test the field of view range of the test piece 2000 in the second direction Z.
[0063] Step 2-1: Connect the first adapter 310 to the side of the carrier assembly 200 away from the base 110, and install the test piece 2000 in the first assembly cavity 311, so that the transmission axis of the test piece 2000 is parallel to the second direction Z.
[0064] Step 2-2: Along the second direction Z, place the target object at a position 2000 meters away from the first preset detection reference distance of the part to be tested.
[0065] The first preset detection reference distance can be 30cm.
[0066] Steps 2-3: Activate the second reference component 420 and emit a laser beam parallel to the second direction Z as a reference ray, so that the reference ray illuminates the target object.
[0067] Steps 2-4: Move the test piece 2000 along the first direction X, so that the test piece 2000 moves from position 0 to both ends of the base 110.
[0068] Specifically, the carrier component 200 can be moved along the first direction X, and the carrier component 200 drives the test object 2000 to move synchronously through the first adapter 310. During the movement of the test object 2000 from position 0 towards one end of the base 110, the test object 2000 can move a preset distance each time (exemplarily, the preset distance can be 5mm), and it can be detected whether the test object 2000 can receive the echo reflected back from the target object, until the test object 2000 is moved to the farthest position where the echo can be detected. Then, in the same manner, the test object 2000 can be moved from position 0 towards the other end of the base 110 until the test object 2000 is moved to the farthest position where the echo can be detected. Then, the field of view range of the test object 2000 in the second direction Z can be calculated using trigonometric functions.
[0069] Step 3: Test the field of view range of the test piece 2000 in the third direction Y.
[0070] Step 3-1: Connect the second adapter 320 to the side of the carrier assembly 200 away from the base 110, and install the test piece 2000 in the second assembly cavity 321, so that the transmission axis of the test piece 2000 is parallel to the third direction Y.
[0071] Step 3-2: Along the third direction Y, place the target object at a position 2000 meters away from the second preset detection reference distance of the part to be tested.
[0072] The second preset detection reference distance can be 30cm.
[0073] Step 3-3: Activate the first reference component 410 and emit a laser beam parallel to the third direction Y as a reference ray, so that the reference ray illuminates the target object.
[0074] Steps 3-4: Move the test piece 2000 along the first direction X, so that the test piece 2000 moves from position 0 to both ends of the base 110.
[0075] The specific operations of steps 3-4 are similar to those of steps 2-4, and will not be repeated here.
[0076] The test fixture 1000 provided in this embodiment can measure the field of view of the test piece 2000 in the second direction Z (vertical direction) and the third direction Y (horizontal direction), respectively, to determine whether the field of view of the test piece 2000 in the vertical and horizontal directions meets the assembly requirements and ensures the consistency of obstacle avoidance performance. The first adapter 310 and the second adapter 320 can realize the positioning and installation of the test piece 2000, ensuring that the emission axis of the test piece 2000 is parallel to the second direction Z and the third direction Y, respectively, avoiding misjudgment caused by skew, thereby improving the reliability and accuracy of the test data. In addition, the first reference piece 410 and the second reference piece 420 provide reference lines for the third direction Y and the second direction Z, respectively, which can effectively assist in the positioning and field of view range measurement during the testing process.
[0077] In this embodiment, the cooperation between the slider 130 and the slide rail 120 enables the bearing assembly 200 to be slidably mounted on the base 110, ensuring smooth movement of the test piece 2000 during testing. Simultaneously, a scale allows for millimeter-level positioning of the test piece 2000's movement, providing high detection accuracy and visualization of the field of view. Furthermore, the first adapter 310 and the second adapter 320 are detachably connected to the bearing assembly 200, allowing for adjustment and replacement of the first adapter 310 and the second adapter 320 according to the model and size of the test piece 2000, thus improving the versatility and scalability of the testing fixture 1000.
[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0079] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A test fixture, characterized by, include: Base; The supporting component is slidably mounted on one side of the base along the first direction; A first adapter and a second adapter are detachably connected to the side of the support assembly opposite to the base. The first adapter is provided with a first assembly cavity, and the second adapter is provided with a second assembly cavity. The first assembly cavity is configured to connect to the device under test and to make the emission axis of the device under test parallel to a second direction. The second assembly cavity is configured to connect to the device under test and to make the emission axis of the device under test parallel to a third direction. The first direction, the second direction, and the third direction are perpendicular to each other.
2. The test fixture of claim 1, wherein, The supporting component is provided with a first magnetic element on the side away from the base, and the first adapter is provided with a second magnetic element on the side away from the first assembly cavity and the second adapter is provided with a second magnetic element on the side away from the second assembly cavity. One of the first magnetic elements is magnetically connected to the two second magnetic elements. And / or, the side of the support component opposite to the base is provided with a plug slot, and one of the first adapter and the second adapter is inserted into the plug slot.
3. The test fixture according to claim 1 or 2, characterized in that, The first assembly cavity includes a first receiving portion and a first guide groove portion. The first guide groove portion is located on one side of the first receiving portion and communicates with the first receiving portion. The extension direction of the first guide groove portion is parallel to the third direction.
4. The testing fixture according to claim 3, characterized in that, The first adapter is also provided with a first support plate portion, which is located below the first receiving portion in the direction of gravity.
5. The test fixture of claim 1, wherein, The base has a slide rail parallel to the first direction on the side facing the support component. A slider is slidably mounted on the slide rail, and the support component is fixedly connected to the side of the slider away from the slide rail.
6. The test fixture of claim 5, wherein, The base is provided with a scale on the side facing the slide rail or the slide rail is provided on the side away from the base, and the scale extends along the first direction; And / or, the test fixture further includes two limiting blocks, which protrude from the side of the slide rail away from the base and are respectively disposed at both ends of the slide rail along the first direction.
7. The test fixture of claim 1, wherein The test fixture further includes a first reference component and a second reference component, wherein the axis of the first reference component is parallel to the third direction, and the axis of the second reference component is parallel to the second direction.
8. The test fixture of claim 7, wherein, The first reference element and / or the second reference element includes a laser.
9. The test tool of claim 7 or 8, wherein, The load-bearing component includes a first fixing member and a second fixing member. The first fixing member is slidably mounted on the base along the first direction. The second fixing member is fixedly connected to the side of the first fixing member away from the base. The first adapter and the second adapter can be detachably connected to the side of the second fixing member away from the first fixing member. The first reference member is mounted on the side of the first fixing member facing the second fixing member, and the second reference member is mounted on the end of the second fixing member close to the first fixing member.
10. The test fixture of claim 9, wherein, The second fixing member has a cable routing groove on the side facing the first fixing member.