Multi-point Spatial Foreign Object Detection Device and Verification Method for Product Foreign Object Detection Function

Abstract

The present invention relates to the technical field of equipment detection, and discloses a multi-point space foreign object detection device, which includes a frame (1). A first equipment placement platform (2) is arranged inside the frame (1). A detection device (3) is arranged on one side of the first equipment placement platform (2). The probe (5) device includes a first moving platform (4) and a probe (5). The first moving platform (4) can drive the probe (5) to move in the X-axis, Y-axis, and Z-axis directions. The first equipment placement platform (2) includes a base (6) and a second moving platform (7) installed on the bottom plate. A placement rack (8) is installed on the second moving platform (7). The second moving platform (7) can drive the placement rack (8) to move in the X-axis and Y-axis directions. This device has the advantages of accurate detection data and high efficiency.

Description

Technical Field

[0001] The present invention relates to the field of equipment detection, and particularly to a multi-point space foreign object detection device and a method for verifying the foreign object detection function of products. Background Art

[0002] Some equipment itself has a certain space, so foreign objects may enter during actual use. For example, in an automotive wireless charging device, which includes an in-vehicle device and a ground device. The ground device has a certain space itself and has a foreign object recognition and feedback function. Specifically, when a foreign object enters the ground charging device, the ground charging device can sense it. However, in the actual production process, there is a situation where the charging device cannot sense the entry of foreign objects into the space, resulting in the charging device being unable to activate subsequent safety protection measures, posing a relatively large safety hazard. Therefore, how to verify the foreign object detection ability of equipment is a major technical problem existing in the prior art.

[0003] Chinese Patent CN201410113698.8 provides a foreign object detection device, but this device cannot adapt to the technical problems to be solved in the present application. In the prior art, most detections are carried out manually, with low detection efficiency and poor detection credibility. Summary of the Invention

[0004] The present invention aims at the disadvantages existing in the prior art and provides a multi-point space foreign object detection device and a method for verifying the foreign object detection function of products.

[0005] To solve the above technical problems, the present invention is solved by the following technical solutions:

[0006] A multi-point space foreign object detection device includes a frame. Inside the frame, a first equipment placement platform is provided. On one side of the first equipment placement platform, a detection device is provided. The probe device includes a first moving platform and a probe. The first moving platform can drive the probe to move in the X-axis, Y-axis, and Z-axis directions.

[0007] Preferably, the first equipment placement platform includes a base and a second moving platform installed on the base. A placement rack is installed on the second moving platform. The second moving platform can drive the placement rack to move in the X-axis and Y-axis directions.

[0008] Preferably, the frame is a rectangular parallelepiped frame formed by assembling profiles. The rectangular parallelepiped frame divides the space into a first installation space and a second installation space. The first equipment platform is arranged in the first installation space, and the probe device is installed in the second installation space. The first moving platform includes a first ball screw device arranged on the cross bars on both sides of the second installation space along its X-axis direction. The first ball screw device includes a first driving motor, a first screw rod driven by the first driving motor, and a first slider. The first driving motor can drive the first slider to move along the X-axis direction through the first screw rod. The first moving platform further includes a second ball screw device. The second ball screw device includes a second driving motor and a second housing. The second driving motor is installed on one of the first sliders, and one end of the second housing away from the second driving motor is installed with the other first slider. The second housing is perpendicular to the first ball screw device and extends along the Y-axis direction. A second screw rod and a second slider are arranged in the second housing. A third ball screw device is arranged on the second slider and extends along the Z-axis direction. The slider of the third ball screw device is a third slider, and a probe extending along the X-axis direction is fixedly installed on the third slider.

[0009] Preferably, the first equipment placement platform is installed in the first installation space. The first equipment placement platform includes a base fixed at the bottom of the first installation space. The second moving platform includes a first translation mechanism in the X-axis direction. The first translation mechanism includes a first mounting plate, and a second translation mechanism in the Y-axis direction is installed on the first mounting plate. A second mounting plate is arranged above the second translation mechanism, and a placement rack is fixedly installed on the second mounting plate.

[0010] Preferably, the placement rack includes a box body at the bottom and a turntable mechanism arranged at the upper end of the box body. A placement plate is fixedly arranged on the turntable mechanism, and the probe can be moved to the upper side of the placement plate through the first moving platform.

[0011] Preferably, the placement plate is a non-metallic plate member, and a restraint rack for restricting the device to be detected is arranged on the placement plate.

[0012] Preferably, a ground-end charging device placement layer is arranged above the placement plate of the frame, and a simulated vehicle body metal plate placement layer is arranged above the ground-end charging device placement layer.

[0013] Preferably, the box body is a transparent box body, and a storage grid is arranged in the box body. The turntable mechanism includes a turntable seat and a rotatable turntable mounting plate arranged in the turntable seat. An arc-shaped scale is arranged on the edge of the turntable mounting plate, an arc-shaped groove is arranged on the turntable mounting plate, a pointer is arranged on the arc-shaped scale of the turntable seat, the pointer passes through the arc-shaped groove and is located above the arc-shaped scale, and the placement plate is fixedly installed on the turntable mounting plate.

[0014] Preferably, a lifting device is provided between the turntable mechanism and the box body. The lifting device includes a transmission screw rod. One end of the transmission screw rod drives a lifting screw rod to rotate through a bevel gear seat. The turntable mechanism is threadedly connected to the lifting screw rod. The turntable mechanism is fixedly connected to the box body through a guide shaft. The turntable mechanism can move up and down driven by the rotation of the lifting screw rod. A vertical scale is fixedly arranged on the turntable seat. A slot is provided on the upper cover of the box body, and the scale passes through the slot and is inserted into the box body.

[0015] The table pillow designed by the present invention has the following technical effects:

[0016] The detection device designed by the present invention has the following advantages: First, the overall mechanism of the designed detection device is in a cuboid frame shape, so the whole device has better integrity, is convenient for installation and space layout, and at the same time, the device will not be interfered by the outside world. Second, through the design of the structure and the controller of the present invention, the automation degree of the whole detection process is guaranteed, and the detection points can be controlled, so as to ensure the comprehensiveness of detection. Moreover, this device can adapt to different sizes of devices to be detected, and the detection process is controllable. It solves the defects of the prior art that the position of the foreign object cannot be accurately placed manually, accurate verification cannot be achieved, and the traditional empty placement is easy to interfere with the device to be verified and cannot accurately feedback. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the device.

[0018] Figure 2 is Figure 1 A schematic diagram of the structure with the frame removed.

[0019] Figure 3 It is a schematic diagram of the structure of the first equipment placement platform.

[0020] Figure 4 is Figure 3 The enlarged view of

[0021] The names of the parts referred to by each numerical label in the drawings are as follows: 1 - frame, 2 - first equipment placement platform, 3 - detection device, 4 - first moving platform, 5 - probe, 6 - base, 7 - second moving platform, 8 - placement rack, 9 - first installation space, 10 - second installation space, 11 - first ball screw device, 12 - first drive motor, 13 - first slider, 50 - second ball screw device, 14 - second drive motor, 15 - second housing, 16 - second slider, 17 - third ball screw device, 18 - third drive motor, 19 - third slider, 20 - first mounting plate, 21 - first translation mechanism, 22 - second translation mechanism, 23 - second mounting plate, 24 - box body, 25 - turntable mechanism, 26 - placement plate, 27 - restraint rack, 28 - vehicle-mounted terminal charging equipment placement layer, 29 - vehicle body metal plate placement layer, 30 - turntable base, 31 - turntable mounting plate, 32 - arc scale, 33 - pointer, 34 - transmission screw, 35 - lifting screw, 36 - bevel gear seat, 37 - scale, 38 - slot, 39 - guide shaft. Specific Embodiment

[0022] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0023] Embodiment 1

[0024] The multi-point space foreign object detection device includes a frame 1. A first equipment placement platform 2 is arranged inside the frame 1. A detection device 3 is arranged on one side of the first equipment placement platform 2. The probe 5 device includes a first moving platform 4 and a probe 5. The first moving platform 4 can drive the probe 5 to move in the X-axis, Y-axis, and Z-axis directions. In this embodiment, the frame 1 is assembled with aluminum profiles, and the entire frame 1 is in the shape of a cuboid. Among them, the first equipment placement platform 2 is arranged on one side inside the frame 1, and the detection device 3 is arranged on the other side inside the frame 1. Both the first equipment placement platform 2 and the detection device 3 are arranged inside the frame 1.

[0025] In order to further describe the structure and functional characteristics of the first equipment placement platform 2, the following will elaborate on this part in detail;

[0026] The first equipment placement platform 2 includes a base and a second moving platform 7 installed on the base. A placement rack 8 is installed on the second moving platform 7. The second moving platform 7 can drive the placement rack 8 to move in the X-axis and Y-axis directions. This kind of adjustment device can be adapted to verification equipment of different sizes and shapes, making the equipment more versatile and reducing the later R & D investment of the equipment.

[0027] In this embodiment, as described above, the frame 1 is a rectangular parallelepiped frame formed by assembling profiles. The rectangular parallelepiped frame divides the space into a first installation space 9 and a second installation space 10. The first equipment platform is arranged in the first installation space 9, and the probe 5 device is installed in the second installation space 10. The first moving platform 4 includes a first ball screw device 11 arranged on the cross bars on both sides of the second installation space 10 along its X-axis direction. The first ball screw device 11 includes a first driving motor 12, a first screw rod driven by the first driving motor 12, and a first slider 13. The first driving motor 12 can drive the first slider 13 to move along the X-axis direction through the first screw rod. The first moving platform 4 further includes a second ball screw device 50. The second ball screw device 50 includes a second driving motor 4 and a second housing 15. The second driving motor 4 is installed on one of the first sliders 13, and one end of the second housing 15 away from the second driving motor 4 is installed with the other first slider 13. The second housing 15 is perpendicular to the first ball screw device 11 and extends along the Y-axis direction. A second screw rod and a second slider 16 are arranged in the second housing 15. A third ball screw device 17 is arranged on the second slider 16 and extends along the Z-axis direction. The slider of the third ball screw device 17 is a third slider 19, and a probe 5 extending along the X-axis direction is fixedly installed on the third slider 19. In this embodiment, the probe 5 is a carbon fiber rod, and the carbon fiber rod can prevent other metals except the metal foreign object 60 from entering the detection space. In this embodiment, multiple single-axis modules are used to realize the planar movement of the device to be verified. This kind of transmission structure is installed and fixed in cooperation with the frame 1, and has the characteristics of simple installation and reliable support.

[0028] In this embodiment, the first device placement platform 2 is installed in the first installation space 9. The first device placement platform 2 includes a base 6 fixed to the bottom of the first installation space 9. The second moving platform 7 includes a first translation mechanism 21 in the X-axis direction. The first translation mechanism 21 includes a first mounting plate 20. A second translation mechanism 22 in the Y-axis direction is installed on the first mounting plate 20. A second mounting plate 23 is arranged above the second translation mechanism 22. The placement rack 8 is fixedly installed on the second mounting plate 23. In this embodiment, both the first translation mechanism 21 and the second translation mechanism 22 adopt the method of driving a ball screw by a motor for movement. The first translation mechanism 21 includes a first translation drive assembly and a slide rail installed on the base 6. The first translation drive assembly is fixedly connected to the base 6 through the slide rail. Among them, the second translation mechanism 22 is installed on the fixed plate of the first translation mechanism 21. The first translation drive assembly drives the second translation mechanism 22 to perform a slip in the X-axis direction by driving the fixed plate. The second translation mechanism 22 includes a second translation drive assembly. A slide rail is arranged on the upper end surface of the fixed plate of the first translation drive mechanism. The box body 24 is fixedly connected to the second translation drive assembly. The box body 24 is slidably connected to the slide rail on the fixed plate of the first translation drive assembly. The second translation drive assembly can drive the box body 24 to perform

[0029] In this embodiment, the placement rack 8 includes a box body 24 at the bottom and a turntable mechanism 25 arranged at the upper end of the box body 24. A placement plate 26 is fixedly arranged on the turntable mechanism 25. The probe 5 can be moved to the upper side of the placement plate 26 through the first moving platform 4. In order to detect the foreign object 60 detection ability of the device to be detected, in this embodiment, a foreign object 60 is fixedly installed at the end of the probe 5. By sending the foreign object 60 to different positions in the internal space of the device to be detected, the test of the foreign object 60 detection ability of the device to be detected is realized.

[0030] Since the metal foreign object 60 has a greater impact on the device to be detected, and in order to avoid metal interference caused by the detection device to the product to be detected and avoid electromagnetic interference caused by the motor to the detection device, in this embodiment, the placement plate 26 is a non-metallic plate member. The non-metallic plate member can shield the external metal foreign object 60 and electromagnetic interference. A limiting frame 27 for limiting the device to be detected is arranged on the placement plate 26. The limiting frame 27 is a mounting frame used to fix the position of the device to be detected, and the limiting frame 27 can be adjusted to facilitate the positioning of different products.

[0031] To ensure easier and more convenient installation, in this embodiment, the vehicle-mounted charging device placement layer 28 is provided above the placement plate 26 on the rack 1, and the simulated vehicle body metal plate placement layer 29 is provided above the ground-end charging device placement layer. The vehicle-mounted charging device placement layer 28 is located above the ground-end charging device and will not affect the ground-end charging device during actual detection. Moreover, the placed metal plate of the simulated vehicle body can bring the vehicle-mounted charging device into a more realistic scenario, more accurately simulate the scenario of the charging process, and ensure the rationality and accuracy of the detection.

[0032] In this embodiment, the box body 24 is a transparent box body 24, which is generally rectangular in shape, and the side surface of the box body 24 is a transparent glass plate. A storage compartment is provided inside the box body 24; the turntable mechanism 25 includes a turntable seat 30 and a rotatable turntable mounting plate 31 provided inside the turntable seat 30. An arc-shaped scale 32 is provided at the edge of the turntable mounting plate 31, an arc-shaped groove is provided on the turntable mounting plate 31, a pointer 33 is provided on the arc-shaped scale 32 on the turntable seat 30, and the pointer 33 passes through the arc-shaped groove and is located above the arc-shaped scale 32. The placement plate 26 is fixedly installed on the turntable mounting plate 31. The turntable mechanism 25 in this embodiment is a manually driven turntable. In order to ensure that the rotation can be controlled, in this embodiment, the rotation position is precisely controlled by setting a scale on the turntable. Moreover, in this embodiment, the pointer 33 does not rotate, and the rotation angle is controlled by the relative rotation of the scale with respect to the pointer 33. This structure has the advantages of a long service life and stable fixation of the pointer 33 compared with the structure where the pointer 33 is fixed on the turntable.

[0033] To achieve the position adjustment of the turntable mechanism 25, in this embodiment, a lifting device is provided between the turntable mechanism 25 and the box body 24. The lifting device includes a transmission screw rod 34. One end of the transmission screw rod 34 drives the lifting screw rod 35 to rotate through a bevel gear seat 36. The turntable mechanism 25 is threadedly connected to the lifting screw rod 35. The turntable mechanism 25 is fixedly connected to the box body 24 through a guide shaft 39. The turntable mechanism 25 can move up and down driven by the rotation of the lifting screw rod 35. A vertical scale 37 is fixedly arranged on the turntable base 6. A slot 38 is provided on the upper cover of the box body 24. The scale 37 passes through the slot 38 and is inserted into the box body 24. Setting the scale 37 can ensure the distance between the turntable and the box body 24, thereby facilitating the control of the distance between the ground wireless charging device and the in-vehicle wireless charging device. The detection device designed in this embodiment has the following characteristics. First, the overall mechanism of the designed detection device is in the shape of a rectangular parallelepiped frame, so the integrity of the whole device is better, which is also convenient for installation and spatial layout. At the same time, the device will not be interfered by the outside world. Second, through the design of the structure and the controller of the present invention, the automation degree of the whole detection process is ensured, and the detection points can be controlled, so as to ensure the comprehensiveness of the detection. Moreover, this device can be adapted to different sizes of devices to be detected, and the detection process is controllable. It solves the defects of the prior art that manual placement cannot accurately place the position of the foreign object 60, cannot achieve accurate verification, and the traditional placement in the air is likely to interfere with the device to be verified and cannot accurately feedback.

[0034] The verification process of this detection device is as follows:

[0035] 1. Fix the ground wireless charging device and the in-vehicle wireless charging device, connect the CAN communication lines of the ground wireless charging device, the in-vehicle wireless charging device and the detection device, and turn on the product power; among them, the ground wireless charging device realizes the position fixation of the in-vehicle end through the first translation mechanism 21, the second translation mechanism 22 and the turntable, so as to facilitate the realization of automation and ensure that the detection points of each product to be detected are fixed points in the product;

[0036] 2. Fix the metal foreign object 60 at the end of the probe 5;

[0037] 3. Open the test software, enter the foreign object 60 detection test interface, select the model to be tested in the product model drop-down box, enter the software model, select the foreign object 60 type in the foreign object 60 selection drop-down box, and then click the start button; the first moving platform 4 and the second moving platform 7 move the probe 5 to the origin position;

[0038] 4. The control system controls the metal foreign object 60 to move to the first test point, receives the signal of whether there is a foreign object 60, judges and records; the metal foreign object 60 moves to the next test and repeats receiving the signal and recording; until after the last test point, the metal foreign object 60 returns to the origin.

[0039] 5. Display the record form of the presence or absence of foreign object 60 on the computer display screen to determine whether the functions of the device to be verified are normal;

[0040] 6. Exit the software after the test is completed.

[0041] Embodiment 2

[0042] The difference between this embodiment and Embodiment 1 is that the limiting frame 27 provided on the placement plate 26 includes a limiting block 261, a fixing groove 262 and a fixing bolt 263. The limiting block 261 is fixed by inserting the fixing bolt 263 into the fixing groove 262. The fixing groove 262 in this embodiment is a strip-shaped groove, so as to facilitate the position adjustment of the limiting block 261.

[0043] Embodiment 3

[0044] The difference between this embodiment and Embodiment 1 is that a magnetic base 51 is fixedly installed on the turntable mounting plate 31. The magnetic base 51 fixes the placement plate, and the magnetic base 51 is fixed to realize the change of the plane angle, so as to realize the different plane deviations and height changes between different components of the device to be verified.

[0045] In summary, the above are only the preferred embodiments of the present invention. All equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. Multi-point spatial foreign object detection device, including a frame (1), characterized in that: Inside the frame (1), there is a first equipment placement platform (2). On one side of the first equipment placement platform (2), there is a detection device (3). The probe (5) device includes a first moving platform (4) and a probe (5). The first moving platform (4) can drive the probe (5) to move in the X-axis, Y-axis, and Z-axis directions. The first equipment placement platform (2) includes a base (6) and a second moving platform (7) installed on the base (6). A placement rack (8) is installed on the second moving platform (7). The second moving platform (7) can drive the placement rack (8) to move in the X-axis and Y-axis directions. The placement rack (8) includes a box body (24) at the bottom and a turntable mechanism (25) provided at the upper end of the box body (24). A placement plate (26) is fixedly provided on the turntable mechanism (25). The probe (5) can be moved to the upper side of the placement plate (26) through the first moving platform (4). Above the placement plate (26) of the frame (1), there is a ground-end charging equipment placement layer, and above the ground-end charging equipment placement layer, there is a simulated vehicle body metal plate placement layer (29). An elevating device is provided between the turntable mechanism (25) and the box body (24). The elevating device includes a transmission screw (34). One end of the transmission screw (34) drives a lifting screw (35) to rotate through a bevel gear seat (36). The turntable mechanism (25) is threadedly connected to the lifting screw (35). The turntable mechanism (25) is fixedly connected to the box body (24) through a guide shaft (39). The turntable mechanism (25) can move up and down driven by the rotation of the lifting screw (35). A vertical scale (37) is fixedly provided on the turntable seat (30). A slot (38) is provided on the upper cover of the box body (24). The scale (37) passes through the slot (38) and is inserted into the box body (24). Fix the metal foreign object at the end of the probe (5).

2. The multi-point spatial foreign object detection device according to claim 1, wherein: The frame (1) is a cuboid frame formed by assembling profiles. The cuboid frame divides the space into a first installation space (9) and a second installation space (10). The first equipment platform is arranged in the first installation space (9), and the probe (5) device is installed in the second installation space (10). The first moving platform (4) includes a first ball screw device (11) arranged on the cross bars on both sides of the second installation space (10) along its X-axis direction. The first ball screw device (11) includes a first driving motor (12) and a first screw rod and a first slider (13) driven by the first driving motor (12). The first driving motor (12) can drive the first slider (13) to move along the X-axis direction through the first screw rod. The first moving platform (4) further includes a second ball screw device (50). The second ball screw device (50) includes a second driving motor (14) and a second housing (15). The second driving motor (14) is installed on one of the first sliders (13). One end of the second housing (15) far from the second driving motor (14) is installed with the other first slider (13). The second housing (15) is perpendicular to the first ball screw device (11). The second housing (15) extends along the Y-axis direction. A second screw rod and a second slider (16) are arranged in the second housing (15). A third ball screw device (17) is arranged on the second slider (16). The third ball screw device (17) extends along the Z-axis direction. The slider of the third ball screw device (17) is a third slider (19). A probe (5) extending along the X-axis direction is fixedly installed on the third slider (19).

3. The multi-point spatial foreign object detection device according to claim 2, wherein: The first equipment placement platform (2) is installed in the first installation space (9). The first equipment placement platform (2) includes a base (6) fixed at the bottom of the first installation space (9). The second moving platform (7) includes a first translation mechanism (21) in the X-axis direction. The first translation mechanism (21) includes a first mounting plate (20). A second translation mechanism (22) in the Y-axis direction is installed on the first mounting plate (20). A second mounting plate (23) is arranged above the second translation mechanism (22). A placement rack (8) is fixedly installed on the second mounting plate (23).

4. The multi-point space foreign object detection device according to claim 1, characterized in that: The placement plate (26) is a non-metallic plate member. A limiting rack (27) for restricting the device to be detected is arranged on the placement plate (26).

5. The multi-point spatial foreign object detection device according to claim 1, characterized in that: The box body (24) is a transparent box body (24). A storage grid is arranged in the box body (24). The turntable mechanism (25) includes a turntable base (30) and a rotatable turntable mounting plate (31) arranged in the turntable base (30). An arc scale (32) is arranged on the edge of the turntable mounting plate (31). An arc groove is arranged on the turntable mounting plate (31). A pointer (33) is arranged on the arc scale (32) on the turntable base (30). The pointer (33) passes through the arc groove and is located above the arc scale (32). The placement plate (26) is fixedly installed on the turntable mounting plate (31).

6. A method for verifying the function of detecting foreign objects in a product, characterized in that: Including the multi-point space foreign object detection device according to any one of claims 1 to 5, the verification method is as follows: 1), Fix the wireless charging device at the ground end and the wireless charging device on the vehicle, connect the CAN communication lines of the wireless charging device at the ground end, the wireless charging device on the vehicle and the detection device, and turn on the product power supply; 2), Fix the metal foreign object at the end of the probe (5); 3), Open the test software, enter the foreign object detection test interface, select the model to be tested in the product model drop-down box, enter the software model, select the foreign object type in the foreign object selection drop-down box, and then click the start button; The first moving platform (4) and the second moving platform (7) move the probe (5) to the origin position; 4), The control system controls the metal foreign object to move to the first test point, receives the signal of whether there is a foreign object, judges and records; The metal foreign object moves to the next test point and repeats receiving the signal and recording; After reaching the last test point, the metal foreign object returns to the origin; 5), Display the foreign object presence / absence record form on the computer display screen to judge whether the device function needs to be verified; 6), Exit the software after the test is completed.

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