Brushless motor Hall plate detection device

Abstract

The utility model discloses a brushless motor Hall plate detection device, which comprises a test board and a Hall plate arranged at the top of the test board, and is characterized in that the side edge of the test board is provided with a press-down driving mechanism, and the press-down driving mechanism is provided with a display control mechanism; the output end of the pressing driving mechanism is provided with a test piece, and the test piece can be in contact with the detection point under the driving of the pressing driving mechanism; the test piece can be driven by the pressing driving mechanism to do reciprocating motion, and the motion direction of the test piece points to the detection point; according to the utility model, through the arrangement of the downward pressing driving mechanism, the test piece can be driven to move downwards horizontally, so that the test contact of the test piece can be in stable contact with the detection point of the Hall plate, thereby replacing the operation of manually connecting the universal meter with the Hall plate by detection personnel, greatly reducing the labor intensity of the detection personnel, and improving the detection efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of brushless motor detection, and in particular relates to a brushless motor Hall plate detection device. Background Art

[0002] Brushless DC motors have the advantages of high torque, high energy density, high efficiency and low noise. With the advancement of modern science and technology, industries such as automobiles and intelligent robots are developing rapidly, and the demand for brushless DC motors is increasing. At the same time, the requirements for the performance indicators and control accuracy of brushless DC motors are also getting higher and higher.

[0003] One of the key technologies of brushless DC motors is the detection of the motor rotor position. Only by detecting the absolute electrical angle of the rotor can the inverter's power-on mode, control mode, and output current frequency and phase be determined to ensure the normal operation of the brushless motor.

[0004] The Hall sensor is a magnetic field sensor made based on the Hall effect. It is mainly used for measurement and has many characteristics such as high precision and good linearity. As a commonly used brushless DC motor position sensor device, the Hall sensor is widely used in motors. The rotor position is determined by the Hall sensor and the position information is sent to the motor controller to control the motor rotation.

[0005] At present, Hall sensors are usually integrated and used in the form of Hall plates. Therefore, as a key component of brushless DC motors, it is particularly important to control the quality of the Hall plates.

[0006] After the existing Hall sensor is welded and integrated onto the Hall board, problems such as cold solder joints, short circuits, desoldering, and device damage may occur. Inspection after welding may result in missed detections if only relying on human visual inspection.

[0007] Moreover, when the Hall plate is tested by an instrument, the test personnel directly use a multimeter to test it, and judge whether there is a short circuit or an open circuit in the Hall sensor by the displayed values ​​of voltage and resistance respectively. This is not intuitive, and the test personnel are required to frequently connect the positive and negative poles of the multimeter to the Hall plate, which takes a lot of time to operate, and has the disadvantages of high labor intensity and low detection efficiency. Utility Model Content

[0008] The utility model aims to provide a brushless motor Hall plate detection device to solve the problems raised in the above background technology.

[0009] To achieve the above object, the utility model provides the following technical solution: a brushless motor Hall plate detection device, comprising a test bench and a Hall plate arranged on the top of the test bench, wherein:

[0010] A plurality of Hall elements are arranged at the bottom of the Hall plate, and a receiving groove for accommodating the Hall elements is arranged on the test bench;

[0011] The top array of the Hall plate is provided with a plurality of detection points, and dividing grooves are provided between adjacent detection points;

[0012] A dividing column is extended outward from the top of the test bench, and the dividing column passes through the dividing groove to divide the adjacent detection points;

[0013] A downward pressing driving mechanism is provided on the side of the test bench, and a display control mechanism is provided on the downward pressing driving mechanism;

[0014] A test piece is provided at the output end of the pressing driving mechanism, and the test piece can contact the detection point under the driving of the pressing driving mechanism;

[0015] The test piece can reciprocate under the drive of the downward pressing driving mechanism, and the moving direction of the test piece points to the detection point.

[0016] Preferably, the downward pressure driving mechanism includes a pressure platform fixedly connected to the test bench, and a pressure frame is fixedly provided on the top of the pressure platform; a downward pressure motor is fixedly provided on the top of the pressure frame, and a downward pressure screw is provided at the output end of the downward pressure motor; the downward pressure screw can control the upward and downward movement of the downward pressure slider thereon, and a test piece is fixedly provided on the downward pressure slider.

[0017] Preferably, the test piece includes a fixing plate fixedly connected to the output end of the downward pressure driving mechanism, and a test plate is fixedly provided at the bottom of the fixing plate; a test contact is provided at the bottom of the test plate, and the test contact and the detection point are arranged corresponding to each other.

[0018] Preferably, adjacent segmentation columns are combined with each other to form isolation grooves for isolating test contacts on the test piece.

[0019] Preferably, the display control mechanism includes a shell arranged on the downward driving mechanism, a control switch is provided on the shell, and a detection board is provided inside the shell; one end of the detection board is electrically connected to the test board on the test piece through a flexible connecting line, and the other end of the detection board is electrically connected to the display screen arranged on the shell through a flexible connecting line.

[0020] Preferably, a limiting column is extended outwardly from the top of the test bench to limit the inner ring of the Hall plate, and a limiting ring is extended outwardly from the top of the Hall plate to limit the outer ring of the Hall plate.

[0021] Preferably, a turntable is movably provided at the axial position of the limit column, and detection magnets are detachably provided on both sides of the top of the turntable through fixed blocks; a rotating motor is provided at the bottom of the turntable, and the rotating motor is fixedly arranged in the detection groove inside the limit column.

[0022] Preferably, the detection magnet includes a first magnet and a second magnet, and the first magnet and the second magnet are located on the inner side of the Hall plate; the first magnet and the second magnet are arranged corresponding to each other, and the polarities of the first magnet and the second magnet toward the outer end are different.

[0023] Preferably, the accommodating groove and the Hall element are arranged corresponding to each other, and the dividing column can pass through the dividing groove to locate the position of the Hall plate.

[0024] Preferably, three Hall elements are arranged around the bottom of the Hall plate, and the intervals between adjacent Hall elements are equal.

[0025] The technical effects and advantages of the utility model include:

[0026] 1. Through the setting of the test bench, the position of the Hall plate can be limited while the Hall plate is loaded. In this way, the position of the Hall plate can be fixed when the Hall plate is tested, so that the Hall plate will not shake during the test, which can ensure the stability of the Hall plate during the test and greatly improve the test quality;

[0027] 2. Through the setting of the downward driving mechanism, the test piece can be driven to move downward horizontally, so that the test contact of the test piece can stably contact the detection point of the Hall plate. In this way, the operation of manually connecting the multimeter with the Hall plate by the test personnel can be replaced, which can greatly reduce the labor intensity of the test personnel and improve the detection efficiency;

[0028] 3. By setting a detection magnet on the inner side of the Hall plate and driving the detection magnet on the turntable to rotate through a rotating motor, the relative position relationship between the Hall element and the detection magnet can be changed. The Hall element senses the change in magnetic field strength, the Hall signal on the tested Hall plate changes, and the output signal also changes accordingly. The working logic state and fault state signal of the tested Hall plate can be quickly detected and identified, achieving the effect of rapid detection of the Hall plate, which can greatly improve the detection reliability;

[0029] 4. Through the setting of the display control mechanism, the test piece is connected to the detection board inside the display control mechanism through a flexible connecting line. The display control mechanism can intuitively express the functional operation status of the Hall plate, quickly detect the Hall plate and identify the fault of the Hall plate, and quickly determine whether the functional operation status of the Hall plate is normal. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the utility model;

[0031] Figure 2 It is a schematic diagram of the specific structure of the utility model;

[0032] Figure 3 It is a cross-sectional view of the utility model;

[0033] Figure 4 The figure is a schematic diagram of the specific structure of the Hall plate of the utility model.

[0034] In the figure:

[0035] 1. Test bench; 2. Hall plate; 3. Press-down drive mechanism; 4. Display control mechanism; 5. Test piece; 6. Turntable; 7. Fixing block; 8. Detection magnet; 9. Rotating motor;

[0036] 11. Accommodating groove; 12. Splitting column; 13. Isolation groove; 14. Limiting column; 15. Limiting ring; 16. Detection groove;

[0037] 21. Hall element; 22. Detection point; 23. Splitting groove;

[0038] 31. Pressing platform; 32. Pressing frame; 33. Pressing motor; 34. Pressing screw rod; 35. Pressing slide block;

[0039] 41. housing; 42. control switch; 43. detection board; 44. flexible connecting line; 45. display screen;

[0040] 51. Fixing plate; 52. Test plate; 53. Test contact;

[0041] 81. A first magnet; 82. A second magnet. DETAILED DESCRIPTION

[0042] The following will be combined with the attached embodiment of the utility model Figure 1-4 , clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] The utility model provides Figure 1-Figure 4 A brushless motor Hall plate detection device shown in the figure comprises a test bench 1 and a Hall plate 2 arranged on the top of the test bench 1, wherein:

[0044] A plurality of Hall elements 21 are arranged at the bottom of the Hall plate 2, and a receiving groove 11 for accommodating the Hall element 21 is arranged on the test bench 1. The shape of the receiving groove 11 is adapted to the appearance of the Hall element 21. By adapting the receiving groove 11 to the Hall element 21, the receiving groove 11 can better position the Hall element 21, and can achieve a better matching and positioning effect, so that the Hall plate 2 has strong stability and good firmness, which is conducive to the stability and accuracy of the detection of the Hall plate 2, thereby minimizing the detection deviation.

[0045] In the utility model, through the setting of the test bench 1, the position of the Hall plate 2 can be limited while the Hall plate 2 is supported. In this way, the position of the Hall plate 2 can be fixed when the Hall plate 2 is detected, so that the Hall plate 2 will not shake during the detection process, which can ensure the stability of the Hall plate 2 during the test and can greatly improve the detection quality.

[0046] The Hall plate 2 (i.e., a magnetic field sensor based on the Hall effect) has no limitation on the shape in the present invention. For example, it can be circular, square, etc. The shape can be selected according to the actual installation requirements.

[0047] The top array of the Hall plate 2 is provided with a plurality of detection points 22, and dividing grooves 23 are provided between adjacent detection points 22; a dividing column 12 is extended outward from the top of the test bench 1, and the dividing column 12 passes through the dividing grooves 23 to divide the adjacent detection points 22; by setting the dividing column 12, the adjacent detection points 22 can be divided and isolated, which can prevent the occurrence of false touches and improve the detection efficiency.

[0048] The side of the test bench 1 is provided with a downward driving mechanism 3. Through the setting of the downward driving mechanism 3, the test piece 5 can be driven to move downward horizontally, so that the test contact 53 of the test piece 5 can be in stable contact with the detection point 22 of the Hall plate 2, which can replace the operation of the detection personnel manually connecting the multimeter to the Hall plate 2, which can greatly reduce the labor intensity of the detection personnel and improve the detection efficiency.

[0049] The downward driving mechanism 3 is provided with a display control mechanism 4. Through the setting of the display control mechanism 4, the test piece 5 is connected to the detection board 43 inside the display control mechanism 4 through a flexible connecting line 44. The functional operation status of the Hall plate 2 can be intuitively expressed through the display control mechanism 4, the Hall plate 2 can be quickly detected and the fault of the Hall plate 2 can be identified, and whether the functional operation status of the Hall plate 2 is normal can be quickly judged.

[0050] A test piece 5 is provided at the output end of the pressing drive mechanism 3, and the test piece 5 can contact the detection point 22 under the drive of the pressing drive mechanism 3; the test piece 5 can reciprocate under the drive of the pressing drive mechanism 3, and the movement direction of the test piece 5 points to the detection point 22. In this way, the contact detection effect of the Hall element 21 can be achieved by utilizing the contact and cooperation between the test piece 5 and the detection point 22, thereby solving the problem of repeated disconnection of the wiring when testing the Hall plate 2, improving the detection efficiency and facilitating the operation.

[0051] Specifically, the pressing drive mechanism 3 includes a pressing platform 31 fixedly connected to the test bench 1, and a pressing frame 32 is fixedly provided on the top of the pressing platform 31; a pressing motor 33 is fixedly provided on the top of the pressing frame 32, and a pressing screw 34 is provided at the output end of the pressing motor 33; the pressing motor 33 can drive the pressing screw 34 to rotate, and the pressing screw 34 can control the pressing slider 35 thereon to move up and down, and a test piece 5 is fixedly provided on the pressing slider 35, so that the pressing screw 34 can rotate clockwise, and the pressing slider 35 drives the test piece 5 to move downward; the pressing screw 34 rotates counterclockwise, and the pressing slider 35 drives the test piece 5 to move upward.

[0052] In the present invention, an infrared switch can be set on the pressing platform 31, and the downward position of the pressing slider 35 can be limited by the infrared switch to prevent the pressing slider 35 from moving downward excessively and to prevent the pressing slider 35 from driving the test piece 5 to damage the Hall plate 2.

[0053] Specifically, the test piece 5 includes a fixed plate 51 fixedly connected to the output end of the downward driving mechanism 3, and a test plate 52 is fixedly provided at the bottom of the fixed plate 51; a test contact 53 is provided at the bottom of the test plate 52, and the test contact 53 moves together with the downward driving mechanism 3 through the test plate 52, and the test contact 53 and the detection point 22 are arranged corresponding to each other, so as to achieve the effect of detecting the Hall element 21 on the Hall plate 2.

[0054] Specifically, adjacent dividing columns 12 are combined to form isolation grooves 13 for isolating the test contacts 53 on the test piece 5. When the test piece 5 is pressed down to make the test contacts 53 contact the detection points 22, the isolation grooves 13 can separate and isolate adjacent isolation grooves 13 to prevent accidental touches.

[0055] Specifically, the display control mechanism 4 includes a shell 41 arranged on the downward pressing drive mechanism 3, and a control switch 42 is provided on the shell 41. The control switch 42 includes an emergency stop switch, an operation switch, a reset switch and a rotation switch. The emergency stop switch is used to control the downward pressing drive mechanism 3 to pause in an emergency. The operation switch is used to control the downward pressing drive mechanism 3. The reset switch can control the downward pressing drive mechanism 3 to temporarily rise back to the initial setting position at the top. The rotation switch can control the rotating motor 9 to drive the turntable 6 to rotate.

[0056] A detection board 43 is provided inside the shell 41. In the utility model, the detection board 43 adopts an atmega2560 single-chip microcomputer. The detection board 43 can read the output data of the Hall plate 2, and compare the output data with the theoretical data. For the Hall plate 2 within a reasonable range of data deviation, the display screen 45 will display it as qualified. When the output line of the Hall plate 2 is short-circuited, open-circuited, or the Hall element 21 is damaged, the display screen 45 will display the number of the damaged Hall element 21 and the cause of the damage.

[0057] One end of the detection board 43 is electrically connected to the test board 52 on the test piece 5 through a flexible connecting line 44, and the other end of the detection board 43 is electrically connected to a display screen 45 arranged on the shell 41 through a flexible connecting line 44. The detection board 43 provides power to the Hall plate 2, and the Hall plate 2 then feeds back a signal to the detection board 43, thereby achieving the effect of quickly and efficiently detecting the Hall plate 2.

[0058] In the present invention, the detection board 43 is connected to an external power supply through a power converter, and the external power supply is used for power supply. The detection board 43 can supply power to the Hall plate 2 through the flexible connection line 44, and can provide +5V power to the Hall plate 2.

[0059] In the utility model, the detection board 43 is electrically connected to the test board 52 on the test piece 5 through a flexible connecting line 44. Since the test piece 5 will move up and down with the downward driving mechanism 3, a tank chain can be set outside the flexible connecting line 44. By setting the flexible connecting line 44 inside the tank chain, the tank chain can organize the flexible connecting line 44 and protect the flexible connecting line 44 when the test piece 5 moves. The flexible connecting line 44 can also move back and forth with the tank chain to prevent the flexible connecting line 44 from being entangled, worn, pulled off, and scattered, resulting in device failure.

[0060] Specifically, a limit column 14 for limiting the inner ring of the Hall plate 2 is extended outward from the top of the test bench 1, and a limit ring 15 for limiting the outer ring of the Hall plate 2 is extended outward from the top of the Hall plate 2. Through the setting of the limit column 14 and the limit ring 15, the radial direction of the Hall plate 2 can be limited, and the radial movement of the Hall plate 2 along the test bench 1 can be prevented. The position of the Hall plate 2 on the test bench 1 is locked to prevent the Hall plate 2 from moving at will, thereby improving the stability of the docking between the test contact 53 and the detection point 22, and further ensuring the stability and firmness of the detection.

[0061] In the present invention, the top of the limiting column 14 and the top of the limiting ring 15 are located on the same horizontal plane, which makes it convenient to install the Hall plate 2.

[0062] Specifically, a turntable 6 is movably provided at the axial position of the limit column 14, and detection magnets 8 are detachably provided on both sides of the top of the turntable 6 through fixed blocks 7; a rotating motor 9 is provided at the bottom of the turntable 6, and the rotating motor 9 is fixedly arranged in a detection slot 16 inside the limit column 14. By arranging the detection magnet 8 on the inner side of the Hall plate 2 and driving the detection magnet 8 on the turntable 6 to rotate by the rotating motor 9, the relative position relationship between the Hall element 21 and the detection magnet 8 can be changed. The Hall element 21 senses the change in magnetic field strength, the Hall signal on the tested Hall plate 2 changes, and the output signal also changes accordingly. The working logic state and fault state signal of the tested Hall plate 2 can be quickly detected and identified, so as to achieve the effect of quickly detecting the Hall plate 2 and greatly improve the detection reliability.

[0063] In the utility model, since the detection magnet 8 can be rotatably installed on the turntable 6, the relative position relationship between the detection magnet 8 and the Hall element 21 can be changed, thereby changing the magnetic flux passing through the Hall element 21, so as to obtain a better magnetic field sensing position, thereby improving the detection accuracy.

[0064] In the present utility model, the Hall signal output by the Hall element 21 is output to the display control mechanism 4 through the test piece 5, and the operating status of the Hall plate 2 function can be intuitively expressed through the display screen 45, which reduces the operation steps and improves the detection efficiency and reliability.

[0065] Specifically, the detection magnet 8 includes a first magnet 81 and a second magnet. The first magnet 81 and the second magnet are magnets of the same specification, and the first magnet 81 and the second magnet are located on the inner side of the Hall plate 2 .

[0066] The first magnet 81 and the second magnet are arranged corresponding to each other, and the polarities of the first magnet 81 and the second magnet facing the outer ends are different, so that the north (N) pole of the first magnet 81 faces outward and the south (S) pole of the second magnet faces outward, or the south (S) pole of the first magnet 81 faces outward and the north (N) pole of the second magnet faces outward.

[0067] Depending on the type of Hall element 21, different Hall elements 21 will produce different signal actions when their front and back sides pass through a magnetic field of a specific strength, such as: outputting a rising edge signal, a falling edge signal, a signal hold, etc. When the first magnet 81 and the end of the second magnet embedded in the turntable 6 sweep over the Hall element 21, the Hall element 21 senses the change in magnetic field strength, and the output signal will change accordingly. In this way, the Hall element 21 outputs a low level when it senses the south (S) pole, and outputs a high level when it senses the north (N) pole. By alternately installing the N pole and the S pole of the first magnet 81 and the second magnet, when the position of the first magnet 81 and the second magnet changes, the output level of the Hall element 21 will also change.

[0068] Specifically, the accommodating groove 11 and the Hall element 21 are arranged corresponding to each other, and the dividing column 12 can pass through the dividing groove 23 to locate the position of the Hall plate 2. The test bench 1 can position and clamp the Hall plate 2 by snapping the dividing groove 23 with the dividing column 12, which can prevent the Hall plate 2 from moving along the circumferential direction of the test bench 1, lock the position of the Hall plate 2 on the test bench 1, and prevent the Hall plate 2 from rotating at will, thereby improving the stability of the docking between the test contact 53 and the detection point 22, and further ensuring the stability and firmness of the detection.

[0069] Specifically, three Hall elements 21 are arranged around the bottom of the Hall plate 2 , and the intervals between adjacent Hall elements 21 are equal. The three Hall elements 21 are distributed in a ring shape at the bottom of the Hall plate 2 , and the three Hall elements 21 are distributed at an angle of 120 degrees to each other.

[0070] In the utility model, the Hall element 21 adopts the programmable Hall ATS636LSB. The characteristic of this Hall element 21 is that it generates its own magnetic field. In this way, the detection magnet 8 can adopt the same polarity. When the detection magnet 8 approaches the Hall element 21, the level of the Hall element 21 changes, and the Hall element 21 outputs a high level. When the detection magnet 8 leaves the Hall element 21, the level of the Hall element 21 changes, and the Hall element 21 outputs a low level.

[0071] In the utility model, the pins of the Hall element 21 are welded to the circuit board of the Hall plate 2 through the through holes provided on the Hall plate 2. A protective cover can be put on the pins of the Hall element 21 as needed to protect the pins of the Hall element 21 from being bent, broken or other damage.

[0072] In the utility model, the height of the dividing column 12 is higher than the limiting column 14 and the limiting ring 15. When placing the Hall plate 2, the dividing column 12 will be inserted into the dividing groove 23 of the Hall plate 2 first, and then the limiting column 14 will limit the inner circle of the Hall plate 2, and the limiting ring 15 will limit the outer circle of the Hall plate 2, so that it is convenient to install the Hall plate 2.

[0073] Working principle:

[0074] Before testing, the brushless motor Hall plate 2 detection device is powered on first, and then the reset switch is pressed to return the various components in the device to the initial state. Then, the dividing column 12 on the test bench 1 is inserted into the dividing groove 23 of the Hall plate 2, so that the limit column 14 limits the inner ring of the Hall plate 2, and the limit ring 15 limits the outer ring of the Hall plate 2. At this point, the placement of the Hall plate 2 and the positioning of the position of the Hall plate 2 are completed.

[0075] When the brushless motor Hall plate 2 detection device is detecting, the rotary switch is first used to control the rotary motor 9 to drive the turntable 6 to rotate, and then the first magnet 81 and the second magnet on the turntable 6 are driven to rotate, generating an N / S alternating magnetic field. The first magnet 81 and the second magnet rotate and interact with the Hall element 21 in the Hall plate 2, so that the level of the Hall element 21 changes. Then, the running switch is pressed. After waiting for 2 seconds, the pressing motor 33 controls the pressing screw 34 to rotate clockwise and operate the pressing screw 34, so that the pressing slider 35 drives the test piece 5 to move downward, and slowly makes the test contact 53 on the test piece 5 contact the detection point 22 on the Hall plate 2.

[0076] After the test contact 53 on the test piece 5 contacts the detection point 22 on the Hall plate 2, a +5V power supply is provided to the Hall plate 2. The alternating magnetic field will cause the output level of the Hall element 21 to change, causing the Hall signal of the Hall plate 2 under test to change. The Hall plate 2 then feeds back a signal to the detection board 43. The detection board 43 can quickly detect the Hall plate 2 and identify faults of the Hall plate 2, and can quickly determine whether the functional operation status of the Hall plate 2 is normal. The feedback signal of the Hall plate 2 under test is processed by the detection board 43 and transmitted to the display screen 45, which can intuitively express the functional operation status of the Hall plate 2.

[0077] After the detection, the brushless motor Hall plate 2 detection device presses the rotation switch again, the rotating motor 9 stops running and the turntable 6 stops rotating, and then the reset switch is pressed again, the pressing motor 33 controls the pressing screw 34 to rotate counterclockwise and operate the pressing screw 34, so that the pressing slider 35 drives the test piece 5 to move upward, so that the test contact 53 on the test piece 5 is separated from the detection point 22 on the Hall plate 2, and then the Hall plate 2 that has been detected is taken out to complete the detection of the Hall plate 2.

[0078] If you need to test the Hall plates 2 in batches, just repeat the above steps.

[0079] Finally, it should be noted that the above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A brushless motor Hall plate detection device, comprising a test bench (1) and a Hall plate (2) arranged on the top of the test bench (1), characterized in that: A plurality of Hall elements (21) are arranged at the bottom of the Hall plate (2), and a receiving groove (11) capable of receiving the Hall elements (21) is arranged on the test bench (1); The top array of the Hall plate (2) is provided with a plurality of detection points (22), and dividing grooves (23) are provided between adjacent detection points (22); A dividing column (12) is provided on the top of the test bench (1) extending outward, and the dividing column (12) passes through a dividing groove (23) to divide adjacent detection points (22); A downward pressing driving mechanism (3) is provided on the side of the test bench (1), and a display control mechanism (4) is provided on the downward pressing driving mechanism (3); The output end of the downward pressing driving mechanism (3) is provided with a test piece (5), and the test piece (5) can be brought into contact with a detection point (22) under the driving of the downward pressing driving mechanism (3); The test piece (5) can perform reciprocating motion under the drive of the downward pressure driving mechanism (3), and the moving direction of the test piece (5) points to the detection point (22).

2. A brushless motor Hall plate detection device according to claim 1, characterized in that: The downward pressing driving mechanism (3) comprises a pressing platform (31) fixedly connected to the test platform (1), and a pressing frame (32) is fixedly arranged on the top of the pressing platform (31); A downward pressing motor (33) is fixedly arranged on the top of the pressing frame (32), and a downward pressing screw rod (34) is arranged at the output end of the downward pressing motor (33); The pressing screw rod (34) can control the pressing slider (35) thereon to move up and down, and a test piece (5) is fixedly provided on the pressing slider (35).

3. A brushless motor Hall plate detection device according to claim 1, characterized in that: The test piece (5) comprises a fixing plate (51) fixedly connected to the output end of the downward pressure driving mechanism (3), and a test plate (52) is fixedly provided at the bottom of the fixing plate (51); A test contact point (53) is provided at the bottom of the test board (52), and the test contact point (53) and the detection point (22) are arranged corresponding to each other.

4. A brushless motor Hall plate detection device according to claim 1, characterized in that: Adjacent segmentation columns (12) are combined to form isolation grooves (13) for isolating test contacts (53) on the test piece (5).

5. The brushless motor Hall plate detection device according to claim 1, characterized in that: The display control mechanism (4) comprises a housing (41) arranged on the downward pressing driving mechanism (3), a control switch (42) is arranged on the housing (41), and a detection board (43) is arranged inside the housing (41); One end of the detection board (43) is electrically connected to a test board (52) on a test piece (5) via a flexible connection line (44), and the other end of the detection board (43) is electrically connected to a display screen (45) provided on a housing (41) via a flexible connection line (44).

6. A brushless motor Hall plate detection device according to claim 1, characterized in that: A limiting column (14) is provided on the top of the test bench (1) to limit the inner ring of the Hall plate (2), and a limiting ring (15) is provided on the top of the Hall plate (2) to limit the outer ring of the Hall plate (2).

7. A brushless motor Hall plate detection device according to claim 6, characterized in that: A rotating disk (6) is movably provided at the axial position of the limiting column (14), and detection magnets (8) are detachably provided on both sides of the top of the rotating disk (6) via fixed blocks (7); A rotating motor (9) is provided at the bottom of the rotating disk (6), and the rotating motor (9) is fixedly arranged in a detection slot (16) inside the limiting column (14).

8. The brushless motor Hall plate detection device according to claim 7, characterized in that: The detection magnet (8) comprises a first magnet (81) and a second magnet, and the first magnet (81) and the second magnet are located on the inner side of the Hall plate (2); The first magnet (81) and the second magnet are arranged corresponding to each other, and the polarities of the first magnet (81) and the second magnet toward the outer ends are different.

9. The brushless motor Hall plate detection device according to claim 1, characterized in that: The accommodating groove (11) and the Hall element (21) are arranged corresponding to each other, and the dividing column (12) can pass through the dividing groove (23) to locate the position of the Hall plate (2).

10. The brushless motor Hall plate detection device according to claim 1, characterized in that: Three Hall elements (21) are arranged around the bottom of the Hall plate (2), and the spacing between adjacent Hall elements (21) is equal.

Images