A TOF sensor testing device

Abstract

This utility model relates to the technical field of electronic product testing, and provides a TOF sensor testing device, including a housing and a testing station. The testing station includes a fixing fixture, a positioning plate, a TOF gray card testing mechanism, and a belt drive mechanism. The fixing fixture is located on the outer wall of the housing and connected to the housing, and is used to fix the TOF sensor. The positioning plate is located at the bottom of the housing. The TOF gray card testing mechanism is located inside the housing and above the positioning plate, with its bottom slidably connected to the positioning plate. The belt drive mechanism is located inside the housing and is connected to the TOF gray card testing mechanism, which is used to move the TOF gray card testing mechanism on the positioning plate. Calibration and testing of the TOF sensor are achieved on the same TOF sensor testing device, simplifying the testing fixture scheme, improving work efficiency, and reducing product processing costs.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic product testing, and more specifically, to a TOF sensor testing device. Background Technology

[0002] With the development of 3C electronic products, many testing devices for testing 3C electronic products have appeared on the market. In the existing technology, the conventional process for calibrating and testing TOF sensors is mostly a two-stage test, that is, the calibration and testing processes are separate. Due to the influence of traditional test schemes and tooling design schemes, the calibration and testing tooling for TOF sensors is usually dedicated tooling, which leads to redundant tooling, excessive line space occupation, low operation efficiency, and high product processing costs. Utility Model Content

[0003] The purpose of this invention is to provide a TOF sensor testing device to solve the technical problems of redundant tooling and low work efficiency caused by separating the calibration and testing of TOF sensors into two processes in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a TOF sensor testing device, including a housing and a testing station, wherein the testing station includes:

[0006] A fixing fixture is provided on the outer side wall of the housing and connected to the housing. The fixing fixture is used to fix the TOF sensor.

[0007] A positioning plate, wherein the positioning plate is located at the bottom of the box body;

[0008] The TOF gray card testing mechanism is located inside the box and above the positioning plate, and the bottom of the TOF gray card testing mechanism is slidably connected to the positioning plate.

[0009] A belt-driven motion mechanism is located inside the housing. The TOF gray card testing mechanism is connected to the belt-driven motion mechanism, which is used to drive the TOF gray card testing mechanism to move on the positioning plate.

[0010] According to the TOF sensor testing device described above, the fixing fixture includes a first clamp and a second clamp. The first clamp and the second clamp are arranged opposite to each other to form a cavity for accommodating the TOF sensor. The side wall of the housing is provided with a hole. The TOF sensor is fixed in the cavity by the first clamp and the second clamp, and the transmitting end of the TOF sensor is located at the hole and faces the TOF gray card testing mechanism.

[0011] According to the TOF sensor testing device described above, both the first clamp and the second clamp are U-shaped, and elastic clamps are provided on both sides of the first clamp and both sides of the second clamp.

[0012] According to the TOF sensor testing device described above, the elastic clamp includes:

[0013] The fastener has a sliding groove, and a stop is formed around the sliding groove, and the stop has a notch.

[0014] A slider is provided with a groove, and the two ends of the groove form a sliding part and a clamping part for clamping the TOF sensor. The groove is located at the notch, and the sliding part is located in the sliding groove.

[0015] A spring is disposed between the sliding part and the stop part and is connected to the sliding part and the stop part.

[0016] According to the TOF sensor testing device described above, the length of the positioning plate is 50cm to 100cm;

[0017] And / or, both ends of the positioning plate are provided with limit sensors.

[0018] According to the TOF sensor testing device described above, the bottom of the TOF gray card testing mechanism is provided with a connector, which connects the TOF gray card testing mechanism and the belt movement mechanism.

[0019] According to the TOF sensor testing device described above, the TOF gray card testing mechanism includes:

[0020] A sliding block, which is disposed on the positioning plate and slidably connected to the positioning plate;

[0021] A base plate, which is disposed above and connected to the sliding block, and the base plate is connected to the connecting member;

[0022] A test gray plate is disposed above and connected to the base plate, and the test gray plate is located opposite the TOF sensor.

[0023] According to the TOF sensor testing device described above, the belt movement mechanism includes a driving mechanism, a driven mechanism, and a belt. The belt is sleeved and connected to the driving mechanism and the driven mechanism. The belt is connected to the TOF gray card testing mechanism through the connector.

[0024] According to the TOF sensor testing device described above, the housing is provided with at least two testing stations, and two adjacent testing stations are separated by a partition.

[0025] According to the TOF sensor testing device described above, the TOF sensor testing device further includes a base, which is located below the housing;

[0026] The base is provided with a hinged connection between the base and the bottom of the box and a lock. The base is provided with a hydraulic support rod, one end of which is connected to the bottom of the box and the other end of which is connected to the bottom of the base.

[0027] The beneficial effects of the TOF sensor testing device provided by this utility model are at least as follows:

[0028] The TOF sensor testing device provided by this utility model realizes the calibration and testing of TOF sensors on the same TOF sensor testing device, and can meet the testing requirements of TOF sensors at different distances according to needs. Overall, it simplifies the testing tooling scheme, improves the operation efficiency, and reduces the processing cost of products. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 A three-dimensional structural diagram of the testing device provided by this utility model;

[0031] Figure 2 A schematic diagram of the internal structure of the testing device provided by this utility model;

[0032] Figure 3 A schematic diagram of the structure of the fixing fixture provided by this utility model;

[0033] Figure 4 An exploded structural diagram of the elastic clamp provided by this utility model;

[0034] Figure 5 This is a schematic diagram of the TOF gray card testing mechanism provided by this utility model;

[0035] Figure 6 A schematic diagram of the belt motion mechanism provided by this utility model;

[0036] Figure 7A schematic diagram of the driven mechanism provided by this utility model;

[0037] Figure 8 An exploded three-dimensional structural diagram of the testing device provided by this utility model.

[0038] The following are the labeling elements in the figure:

[0039] 100. Testing device; 10. Housing; 11. Partition; 12. Hole; 20. Testing station; 21. Fixture; 211. First clamp; 212. Second clamp; 213. Cavity; 214. Elastic clamp; 2141. Fixture; 2141a. Sliding groove; 2141b. Stop; 2141c. Notch; 2142. Sliding element; 2142a. Groove; 2142b. Sliding part; 2142c. Clamping part; 22. Positioning plate; 221. Sliding position; 23. TOF gray card testing mechanism; 231. Sliding block; 2311. Sliding groove; 2312. Sliding bar; 232. Base plate; 233. Measurement Test ash plate; 234, reinforcing plate; 24, belt drive mechanism; 241, drive mechanism; 2411, drive motor; 2412, drive wheel; 2413, cooling fan; 242, driven mechanism; 2421, driven wheel; 2422, linkage shaft; 2422a, linkage part; 2423, fixed seat; 2424, bearing; 243, belt; 25, limit sensor; 26, connector; 261, first connecting plate; 262, second connecting plate; 263, third connecting plate; 30, base; 31, hinge; 32, latch; 33, hydraulic strut; 34, emergency stop switch; 35, start switch; 36, handle. Detailed Implementation

[0040] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0041] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. 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. "A plurality" means two or more, unless otherwise explicitly defined.

[0042] Please see Figure 1 and Figure 2 This embodiment provides a TOF sensor testing device 100, including a controller developed using an STM32 control board to control the operation of the entire TOF sensor testing device 100. The TOF sensor testing device 100 also includes a housing 10 and a testing station 20. The housing 10 is made of black bakelite to ensure a completely dark testing environment for the TOF sensor and to prevent stray light interference within the testing range. Optionally, the length of the housing 10 is 700mm–800mm, the surface area is 500–700mm, and the height is 400–550mm. Optionally, the length of the housing 10 is 770mm, the surface area is 600mm, and the height is 485mm. It should be understood that the dimensions of the housing 10 are not limited to the above-described dimensions and can be other sizes, which are not limited here. The housing 10 is provided with at least two test stations 20. Two adjacent test stations 20 are separated by a partition 11. The partition 11 is made of black bakelite. The partition 11 made of black bakelite avoids stray light interference between the two test stations 20, thereby ensuring the validity and authenticity of the test data and improving the test pass rate.

[0043] Please see Figure 2The testing station 20 includes a fixing fixture 21, a positioning plate 22, a TOF gray card testing mechanism 23, and a belt movement mechanism 24. The fixing fixture 21 is located on the outer wall of the housing 10 and connected to the housing 10, and is used to fix the TOF sensor. The positioning plate 22 is located at the bottom of the housing 10. The TOF gray card testing mechanism 23 is located inside the housing 10 and above the positioning plate 22, and its bottom is slidably connected to the positioning plate 22. The belt movement mechanism 24 is located inside the housing 10, and the TOF gray card testing mechanism 23 is connected to the belt movement mechanism 24, which is used to drive the TOF gray card testing mechanism 23 to move on the positioning plate 22.

[0044] The working principle and workflow of the TOF sensor testing device 100 provided in this embodiment are as follows:

[0045] Install the TOF sensor on the fixture 21, with the transmitter of the TOF sensor facing the TOF gray card testing mechanism 23 inside the housing 10, and connect the serial communication cable between the TOF sensor and the controller.

[0046] According to the distance test command issued by the controller, the belt motion mechanism 24 is controlled to drive the TOF gray card test mechanism 23 to move on the positioning plate 22 to the position corresponding to the appropriate calibration test distance. It can meet the different distance test requirements of the TOF sensor as needed. When there are multiple distance test requirements, the distance test parameters can be set as needed in the touch screen of the test device 100.

[0047] After adjusting the position, the TOF sensor is calibrated and tested. The calibration process involves the TOF sensor sending a signal to the TOF gray card testing mechanism 23, then detecting the time difference and intensity change of the reflected signal to obtain the calibration value. The testing process involves verifying whether the deviation between the standard value and the calibration value is within the specifications.

[0048] After the test is completed, the TOF sensor testing device 100 automatically returns to its initial position, and the test results can be viewed in the test software interface.

[0049] Disconnect the serial communication cable and remove the TOF sensor.

[0050] Continue testing the next TOF sensor following the steps above.

[0051] The beneficial effects of the TOF sensor testing device 100 provided in this embodiment are as follows:

[0052] The TOF sensor testing device 100 provided in this embodiment realizes the calibration and testing of TOF sensors on the same TOF sensor testing device 100, and can meet the testing requirements of TOF sensors at different distances according to needs. Overall, it simplifies the testing tooling scheme, improves the operation efficiency, and reduces the processing cost of products.

[0053] In one embodiment, see Figure 3 The fixing fixture 21 includes a first clamp 211 and a second clamp 212, which are arranged opposite to each other to form a cavity 213 for accommodating the TOF sensor. Optionally, the length of the cavity 213 is 10cm to 30cm, and the width of the cavity 213 is 5cm to 20cm. The length of the cavity 213 is 20cm, and the width of the cavity 213 is 10cm. It should be understood that the dimensions of the cavity 213 are not limited to the above-described cases and can be other sizes, which are not limited here. Please refer to... Figure 3 and in conjunction with reference Figure 1 The side wall of the housing 10 has a hole 12 located in the cavity 213. The TOF sensor is fixed in the cavity 213 by the first clamp 211 and the second clamp 212. The transmitting end of the TOF sensor is located at the hole 12 and faces the TOF gray card testing mechanism 23, so that the TOF sensor emits a beam of light towards the TOF gray card testing mechanism 23.

[0054] In one embodiment, see Figure 3 Both the first clamp 211 and the second clamp 212 are U-shaped. Both sides of the first clamp 211 and both sides of the second clamp 212 are provided with elastic clamps 214, which are used to clamp the TOF sensor to be tested.

[0055] In one embodiment, see Figure 4 The elastic clamp 214 includes a fixing member 2141, a sliding member 2142, and a spring (not shown in the figure, the same below). The fixing member 2141 is provided with a sliding groove 2141a, and a stop 2141b is formed around the sliding groove 2141a. The stop 2141b is provided with a notch 2141c. The sliding member 2142 is provided with a groove 2142a, and a sliding part 2142b and a clamping part 2142c for clamping the TOF sensor are formed at the two ends of the groove 2142a. The groove 2142a is located at the notch 2141c, and the sliding part 2142b is located in the sliding groove 2141a. The spring is located between the sliding part 2142b and the stop 2141b and is fixedly connected to the sliding part 2142b and the stop 2141b.

[0056] When it is necessary to fix the TOF sensor, push the clamping part 2142c of the slider 2142. The slider 2142b pushes the spring to compress and generate elastic deformation, so that the slider 2142b slides in the sliding groove 2141a, thereby increasing the space of the cavity 213. The TOF sensor is placed in the cavity 213, and the emitter of the TOF sensor is placed at the hole 12 and facing the TOF gray card testing mechanism 23. Release the clamping part 2142c, the spring restores its elastic deformation, and the clamping part 2142c returns to its original position, thus clamping the TOF sensor. When it is necessary to remove the TOF sensor from the fixture 21, hold the TOF sensor firmly, and then push the clamping part 2142c of the slider 2142. The slider 2142b pushes the spring to compress and generate elastic deformation, causing the slider 2142b to slide within the sliding groove 2141a. This increases the space of the cavity 213, allowing the TOF sensor to be removed from the fixture 21. Release the clamping part 2142c, and the spring returns to its elastic deformation, returning the clamping part 2142c to its original position. The elastic clamping part 214 described above has a simple structure, is easy to operate, and is durable.

[0057] In one embodiment, the length of the positioning plate 22 is 50cm to 100cm. Therefore, the testing device 100 can perform tests on the TOF sensor at distances from 0 to 100cm. It should be understood that any distance within the range of 0 to 100cm can be tested.

[0058] In one embodiment, see Figure 2 Both ends of the positioning plate 22 are provided with limit sensors 25. The limit sensors 25 are used to detect the movement range of the TOF gray card testing mechanism 23. The TOF gray card testing mechanism 23 can only move within the range of the front and rear limit sensors 25.

[0059] In one embodiment, see Figure 5 The TOF gray card testing mechanism 23 has a connector 26 at its bottom, which connects the TOF gray card testing mechanism 23 to the belt movement mechanism 24. The belt movement mechanism 24 drives the TOF gray card testing mechanism 23 to move through the connector 26.

[0060] In one embodiment, see Figure 5The TOF gray card testing mechanism 23 includes a sliding block 231, a base plate 232, and a test gray plate 233. The sliding block 231 is mounted on and slidably connected to the positioning plate 22; the base plate 232 is positioned above the sliding block 231 and bolted to it, and is bolted to the connecting member 26; the test gray plate 233 is positioned above and bolted to the base plate 232, and is located opposite the TOF sensor. The belt drive mechanism 24 moves the base plate 232 via the connecting member 26. The movement of the base plate 232 causes the sliding block 231 to slide on the positioning plate 22, and simultaneously the test gray plate 233 moves synchronously, thereby adjusting the position of the TOF gray card testing mechanism 23, i.e., determining the testing distance of the TOF sensor.

[0061] Optionally, the bottom of the sliding block 231 is provided with a sliding groove 2311, the inner side wall of the sliding groove 2311 is provided with a sliding strip 2312, the two sides of the positioning plate 22 are provided with sliding positions 221, the positioning plate 22 is located in the sliding groove 2311, the sliding strip 2312 cooperates with the sliding position 221 to realize a sliding connection, and the sliding structure is stable and reliable.

[0062] Optionally, the TOF gray card testing mechanism 23 includes a reinforcing plate 234, which is located on the side of the test gray card 233 away from the TOF sensor. The reinforcing plate 234 is connected to both the test gray card 233 and the base plate 232. The reinforcing plate 234 makes the TOF gray card testing mechanism 23 more stable during operation.

[0063] In one embodiment, see Figure 6 The belt-driven mechanism 24 includes a drive mechanism 241, a driven mechanism 242, and a belt 243. The belt 243 is sleeved and connected to the drive mechanism 241 and the driven mechanism 242. The belt 243 is connected to the TOF gray card testing mechanism 23 through the connector 26. The controller controls the start of the drive mechanism 241, which in turn moves the driven mechanism 242 and the belt 243, thereby driving the connector 26 to move, thus moving the TOF gray card testing mechanism 23.

[0064] Optional, please refer to Figure 7The drive mechanism 241 includes a drive motor 2411 and a drive wheel 2412, with the drive motor 2411 connected to the drive wheel 2412. Optionally, a cooling fan 2413 is provided near the drive motor 2411 to dissipate heat from it. The driven mechanism 242 includes a driven wheel 2421, a linkage shaft 2422, a fixed base 2423, and at least one bearing 2424. A belt 243 is fitted onto the drive wheel 2412 and the driven wheel 2421. One end of the linkage shaft 2422 is a linkage part 2422a, which is connected to the driven wheel 2421. The bearing 2424 is located in the bearing position of the fixed seat 2423. The other end of the linkage shaft 2422 is connected to the bearing 2424, which ensures the stability of the rotation of the driven wheel 2421. Optionally, the fixed seat 2423 is provided with two bearings 2424 to further ensure the stability of the rotation of the driven wheel 2421.

[0065] Optional, please refer to Figure 5 The connector 26 includes a first connecting plate 261, a second connecting plate 262, and a third connecting plate 263. The first connecting plate 261 and the second connecting plate 262 are L-shaped. One end of the first connecting plate 261 is connected to the base plate 232, and the other end of the first connecting plate 261 is connected to the belt 243 in conjunction with the third connecting plate 263, thereby enabling the belt movement mechanism 24 to drive the TOF gray card testing mechanism 23 to move.

[0066] In one embodiment, see Figure 8 The TOF sensor testing device 100 also includes a base 30, which is located below the housing 10.

[0067] The base 30 is connected to the bottom of the housing 10 via a hinge 31 and locked by a latch 32. A hydraulic strut 33 is installed inside the base 30, with one end connected to the bottom of the housing 10 and the other end connected to the base 30. The hinge 31 facilitates opening the base 30 relative to the housing 10, allowing for easy access to the components inside. The latch 32 ensures that the housing 10 and base 30 are stably closed while also facilitating opening. The hydraulic strut 33 allows the housing 10 to be lifted for easy access to the components inside the base 30.

[0068] Optional, please refer to Figure 1 The base 30 is provided with handles 36 on both sides, which facilitates the operator to move the entire TOF sensor testing device 100.

[0069] Optional, please refer to Figure 1The base 30 is equipped with an emergency stop switch 34 for pausing or pausing in an emergency. Optionally, the base 30 is equipped with a start switch 35 for turning the TOF sensor testing device 100 on or off.

[0070] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A TOF sensor testing apparatus, characterized by, It includes a housing and a testing station, wherein the testing station includes: A fixing fixture is provided on the outer side wall of the housing and connected to the housing. The fixing fixture is used to fix the TOF sensor. A positioning plate, wherein the positioning plate is located at the bottom of the box body; The TOF gray card testing mechanism is located inside the box and above the positioning plate, and the bottom of the TOF gray card testing mechanism is slidably connected to the positioning plate. A belt-driven motion mechanism is located inside the housing. The TOF gray card testing mechanism is connected to the belt-driven motion mechanism, which is used to drive the TOF gray card testing mechanism to move on the positioning plate.

2. The TOF sensor testing device of claim 1, wherein, The fixing fixture includes a first clamp and a second clamp. The first clamp and the second clamp are arranged opposite to each other to form a cavity for accommodating the TOF sensor. The side wall of the housing has a hole. The TOF sensor is fixed in the cavity by the first clamp and the second clamp, and the transmitting end of the TOF sensor is located at the hole and faces the TOF gray card testing mechanism.

3. The TOF sensor testing device of claim 2, wherein, Both the first clamp and the second clamp are U-shaped, and elastic clamps are provided on both sides of the first clamp and both sides of the second clamp.

4. The TOF sensor testing device of claim 3, wherein, The elastic clamp includes: The fastener has a sliding groove, and a stop is formed around the sliding groove, and the stop has a notch. A slider is provided with a groove, and the two ends of the groove form a sliding part and a clamping part for clamping the TOF sensor. The groove is located at the notch, and the sliding part is located in the sliding groove. A spring is disposed between the sliding part and the stop part and is connected to the sliding part and the stop part.

5. The TOF sensor testing device of claim 1, wherein, The length of the positioning plate is 50cm to 100cm; And / or, both ends of the positioning plate are provided with limit sensors.

6. The TOF sensor testing device of claim 1, wherein, The TOF gray card testing mechanism is equipped with a connector at its bottom, which connects the TOF gray card testing mechanism and the belt movement mechanism.

7. The TOF sensor testing device of claim 6, wherein, The TOF gray card testing facility includes: A sliding block, which is disposed on the positioning plate and slidably connected to the positioning plate; A base plate, which is disposed above and connected to the sliding block, and the base plate is connected to the connecting member; A test gray plate is disposed above and connected to the base plate, and the test gray plate is located opposite the TOF sensor.

8. The TOF sensor testing device of claim 6, wherein, The belt motion mechanism includes a drive mechanism, a driven mechanism, and a belt. The belt is sleeved and connected to the drive and driven mechanisms, and the belt is connected to the TOF gray card testing mechanism through the connector.

9. The TOF sensor testing device of claim 1, wherein, The chamber is equipped with at least two test stations, and adjacent test stations are separated by a partition.

10. The TOF sensor testing device of claim 1, wherein, The TOF sensor testing device also includes a base, which is located below the housing; The base is provided with a through hinge connection with the bottom of the box, and is locked by a lock catch. The base is provided with a through hinge connection with the bottom of the box, and is locked by a lock catch.

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