Zero debugging device for closed-loop Hall current sensor

Abstract

The utility model belongs to the technical field of current sensors, in particular to a zero debugging device for a closed-loop Hall current sensor, which comprises a case, a support frame is arranged on the upper surface of the case, a pneumatic component is arranged on the side surface of the support frame, and an upper plate is arranged on a push rod of the pneumatic component. According to the debugging device, by arranging the clamping mechanism, the industrial camera and the universal wheels, an operator can freely adjust the position of the clamping mechanism in the circular sliding groove according to the actual size and shape of the sensor, so that the sensor is accurately fixed at the optimal debugging position; due to the flexibility, the device can adapt to various closed-loop Hall current sensors with different specifications, and the universality of the device is greatly improved; the industrial camera controls the universal wheels so that the sensor body can be automatically moved to the optimal debugging position, especially when a large number of sensors at different positions need to be debugged, the disc does not need to be manually pushed to adjust the position, and time is greatly saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to current sensor technical field especially relates to a closed loop hall current sensor zero point debugging device. BACKGROUND

[0002] The hall element inside the closed loop hall current sensor is made of semiconductor material, and the characteristics of semiconductor material will change due to factors such as temperature and stress. In actual application scenarios, there may be various external magnetic field interference around the sensor, such as the magnetic field generated by nearby electrical equipment and magnets. These external magnetic fields will affect the magnetic flux distribution in the sensor magnetic core. Even if the measured current is zero, the sensor may produce a non-zero output due to the influence of external magnetic fields. Therefore, zero point debugging is needed to eliminate the error caused by external magnetic field interference.

[0003] After inquiry, a kind of closed loop hall current sensor zero point debugging device with application number 202322160865.1 is applied on China patent network, the debugging device realizes the selection of positive and negative bidirectional probe contact points by controlling adjusting switch, realizes zero point debugging, however, sensor body is placed in the recess that has been preformed, and the limiting and fixing effect of sensor body is different in different size recess, if recess size is too large, sensor body can exist in recess wobble or displacement, affect the accuracy of debugging;If recess size is too small, it can cause sensor body to be difficult to place into recess, and even can cause extrusion damage to sensor body.

[0004] In view of the above problems, the utility model provides a kind of closed loop hall current sensor zero point debugging device. INVENTION CONTENTS

[0005] Based on the technical problems of different models of sensor clamping, the utility model provides a kind of closed loop hall current sensor zero point debugging device.

[0006] The utility model provides a kind of closed loop hall current sensor zero point debugging device, including case, the upper surface of the case is provided with support frame, the side surface of the support frame is provided with pneumatic component, the push rod of the pneumatic component is provided with upper plate, the lower surface of the upper plate is provided with probe, one side of the case is provided with positive regulating switch, one side of the positive regulating switch is provided with negative regulating switch, one side of the negative regulating switch is provided with pneumatic control switch, the upper surface of the case is provided with disc, the lower surface circumferential array of the disc is provided with universal wheel, the upper surface of the disc is provided with circular slide groove, the inner wall circumferential array of the circular slide groove is slidably connected with clamping mechanism, the upper surface of the disc is placed with sensor body.

[0007] Preferably, the clamping mechanism comprises a sliding disc sliding at the inner wall of the circular sliding groove, the upper surface of the sliding disc is fixedly connected with a fixed column, the upper end of the fixed column is fixedly connected with a fixed block, the upper surface of the fixed block is provided with a fixed groove, and the inner wall of the fixed groove is fixedly connected with an air cylinder.

[0008] Preferably, one end of the piston rod of the air cylinder is fixedly connected with a connecting block, the upper end of the connecting block is fixedly connected with a fractal clamp, the two sides of the fixed groove are symmetrically provided with moving grooves, the lower end of the fractal clamp is not in contact with the upper surface of the fixed block, the two sides of the fractal clamp are slidably connected with limiting rods, and the lower end of the limiting rod is slidably connected with the inner wall of the moving groove.

[0009] Preferably, the outer side of the sliding disc is provided with a polyurethane coating.

[0010] Preferably, the lower surface of the upper plate is provided with an industrial camera, and the industrial camera is signal connected with the control system of the universal wheel through Ethernet.

[0011] Preferably, the side surface of the fractal clamp is provided with an elastic non-slip pad, and the elastic non-slip pad is made of rubber material.

[0012] The beneficial effects in the utility model are as follows:

[0013] By setting the clamping mechanism, the industrial camera and the universal wheel, the operator can freely adjust the position of the clamping mechanism in the circular sliding groove according to the actual size and shape of the sensor, so as to accurately fix the sensor at the best debugging position. The flexibility makes the device adapt to various specifications of closed-loop Hall current sensors, greatly improving the versatility of the equipment. The industrial camera controls the universal wheel to automatically move the sensor body to the best debugging position. Especially when a large number of sensors at different positions need to be debugged, manual pushing of the disc is not required to adjust the position, which greatly saves time. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 A schematic view of a closed-loop Hall current sensor zero point debugging device is provided for the utility model;

[0015] Figure 2 A front view of a closed-loop Hall current sensor zero point debugging device is provided for the utility model;

[0016] Figure 3 A front view of a closed-loop Hall current sensor zero point debugging device is provided for the utility model; Figure 2 An enlarged view of A in the middle;

[0017] Figure 4The utility model provides a closed loop hall current sensor zero point debugging device's clamping mechanism explosion map is provided.

[0018] Figure 5 The utility model provides a closed loop hall current sensor zero point debugging device's fixed block sectional view.

[0019] In the drawing: 1, sensor body; 2, machine case; 3, support frame; 4, pneumatic component; 5, upper plate; 6, probe; 7, disc; 8, clamping mechanism; 81, fixed block; 82, fixed column; 83, sliding disc; 84, fixed groove; 85, air cylinder; 86, connecting block; 87, moving groove; 88, fractal clamp; 89, limiting rod; 9, universal wheel; 10, positive regulation switch; 11, negative regulation switch; 12, pneumatic control switch; 13, industrial camera. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Referring to Figures 1-5 A kind of closed loop hall current sensor zero point debugging device, including machine case 2, the upper surface of machine case 2 is provided with support frame 3, the side of support frame 3 is provided with pneumatic component 4, the push rod of pneumatic component 4 is provided with upper plate 5, the lower surface of upper plate 5 is provided with probe 6, one side of machine case 2 is provided with positive regulation switch 10, one side of positive regulation switch 10 is provided with negative regulation switch 11, one side of negative regulation switch 11 is provided with pneumatic control switch 12, the upper surface of machine case 2 is provided with disc 7, the lower surface of disc 7 is provided with universal wheel 9 in circumferential array, disc 7 is provided with circular slide groove on the upper surface, clamping mechanism 8 is slidably connected in the inner wall circumferential array of circular slide groove, sensor body 1 is placed on the upper surface of disc 7.

[0022] In order to realize the clamping fixation of different models of sensor body 1, set up clamping mechanism 8, clamping mechanism 8 includes the sliding disc 83 that slides in the inner wall of circular slide groove, sliding disc 83 can slide in the inner wall of circular slide groove, so that clamping mechanism 8 can be adjusted at different positions on disc 7, move clamping mechanism 8 to the most suitable position, to ensure that sensor can be accurately clamped and fixed.

[0023] The upper surface of the sliding disc 83 is fixedly connected with a fixed column 82, the upper end of the fixed column 82 is fixedly connected with a fixed block 81, the upper surface of the fixed block 81 is provided with a fixed groove 84, the inner wall of the fixed groove 84 is fixedly connected with a pneumatic cylinder 85, the one end of the piston rod of the pneumatic cylinder 85 is fixedly connected with a connecting block 86, by controlling the piston rod of the pneumatic cylinder 85 to stretch or retract, the clamping force of the fractal clamp 88 on the sensor body 1 can be accurately controlled.

[0024] The upper end of the connecting block 86 is fixedly connected with the fractal clamp 88, the two sides of the fixed groove 84 are symmetrically provided with a moving groove 87, the lower end of the fractal clamp 88 is not in contact with the upper surface of the fixed block 81, the two sides of the fractal clamp 88 are slidingly inserted with a limiting rod 89, the lower end of the limiting rod 89 is slidingly connected with the inner wall of the moving groove 87, the limiting rod 89 slidingly inserted with the two sides of the fractal clamp 88 cooperates with the moving groove 87, which plays a good guiding and limiting role, avoids the position deviation of the sensor caused by unstable movement of the clamp, and thus improves the accuracy of debugging.

[0025] In order to prevent the sliding disc 83 from sliding in the circular sliding groove under the action of external force, a polyurethane coating is arranged on the outer side surface of the sliding disc 83.

[0026] Specifically, the polyurethane coating has a high friction coefficient, when the sliding disc 83 slides in the circular sliding groove, the coating can increase the friction between the sliding disc 83 and the inner wall of the sliding groove. This increased friction plays an important role, it can make the sliding disc 83 better maintain its position without external force, and it will not easily slide because of slight vibration or other interference.

[0027] In order to realize the accurate butt joint of the detection position of the sensor body 1 and the probe 6, an industrial camera 13 is arranged on the lower surface of the upper plate 5, and the industrial camera 13 is signal connected with the control system of the universal wheel 9 through Ethernet.

[0028] Specifically, the industrial camera 13 is matched with a VisionMAX visual software system, which can realize accurate positioning and alignment of the sensor body 1 and the probe 6, and through image recognition technology, it can automatically identify key feature points on the sensor body 1, such as pin position and identifier, and feed back these information to the control system of the universal wheel 9, and the control system can accurately control the movement of the disc 7 and the clamping mechanism 8 to the position directly below the probe 6 according to these information, and then make the upper plate 5 drive the probe 6 to move to the target position for debugging.

[0029] In order to realize the effective clamping of the fractal clamp 88 and different models of sensor bodies 1, an elastic non-slip pad is arranged on the side surface of the fractal clamp 88, and the elastic non-slip pad is made of rubber material.

[0030] Specifically, when the fractal clamp 88 clamps the sensor body 1, the elastic non-slip pad is in contact with the sensor surface, which can effectively increase the friction between the two. At the same time, the sensor body 1 has a certain irregularity, and the elasticity of the rubber material can make the non-slip pad deform to a certain extent according to the shape of the sensor body 1, fill the small gap between the sensor body 1 and the fractal clamp 88, and realize closer fitting.

[0031] Principle of operation:

[0032] Before zero-point debugging of the sensor body 1, the sensor body 1 is placed at the circular position of the disc 7, the operator pushes the clamping mechanism 8 to slide in the circular slot, all the air cylinders 85 are opened, the piston rod of the air cylinder 85 drives the fractal clamp 88 to slide on the upper surface of the fixed block 81 through the connecting block 86, until the fractal clamp 88 completes the fixation of the sensor body 1, the industrial camera 13 starts to monitor, and through the image recognition technology, the key feature points on the sensor body 1 and the adjustment welding points on the sensor body 1 are automatically recognized, and these information is fed back to the control system of the universal wheel 9, and the control system can accurately control the multiple universal wheels 9 to drive the disc 7 to move to the position directly below the probe 6, and the pneumatic component 4 drives the probe 6 to complete the detection.

[0033] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A closed-loop Hall current sensor zero-point debugging device, comprising a cabinet (2), the upper surface of the cabinet (2) is provided with a support frame (3), the side surface of the support frame (3) is provided with a pneumatic component (4), the push rod of the pneumatic component (4) is provided with an upper plate (5), the lower surface of the upper plate (5) is provided with a probe (6), one side of the cabinet (2) is provided with a positive adjustment switch (10), one side of the positive adjustment switch (10) is provided with a negative adjustment switch (11), one side of the negative adjustment switch (11) is provided with a pneumatic control switch (12), characterized in that: The upper surface of the case (2) is provided with a disc (7), the lower surface of the disc (7) is circumferentially provided with universal wheels (9), the upper surface of the disc (7) is provided with a circular chute, the inner wall of the circular chute is circumferentially slidably connected with a clamping mechanism (8), and the upper surface of the disc (7) is placed with a sensor body (1).

2. The closed-loop Hall current sensor zero-point debugging device according to claim 1, characterized in that: The clamping mechanism (8) comprises a sliding disc (83) sliding at the inner wall of the circular chute, a fixed column (82) fixedly connected to the upper surface of the sliding disc (83), a fixed block (81) fixedly connected to the upper end of the fixed column (82), a fixed groove (84) formed in the upper surface of the fixed block (81), and a pneumatic cylinder (85) fixedly connected to the inner wall of the fixed groove (84).

3. The closed-loop Hall current sensor zero-point commissioning device of claim 2, wherein: One end of the piston rod of the pneumatic cylinder (85) is fixedly connected with a connecting block (86), the upper end of the connecting block (86) is fixedly connected with a fractal clamp (88), both sides of the fixed groove (84) are symmetrically provided with a moving groove (87), the lower end of the fractal clamp (88) is not in contact with the upper surface of the fixed block (81), both sides of the fractal clamp (88) are slidably connected with a limiting rod (89), and the lower end of the limiting rod (89) is slidably connected with the inner wall of the moving groove (87).

4. The closed-loop Hall current sensor zero-point commissioning device of claim 3, wherein: The outer side of the sliding disc (83) is provided with a polyurethane coating.

5. The closed-loop Hall current sensor zero-point commissioning device of claim 4, wherein: The lower surface of the upper plate (5) is provided with an industrial camera (13), and the industrial camera (13) is signal connected with the control system of the universal wheel (9) through Ethernet.

6. The closed-loop Hall current sensor zero-point commissioning device of claim 5, wherein: The side surface of the fractal clamp (88) is provided with an elastic non-slip pad made of rubber.

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