A current detection device for a Hall current sensor

Abstract

The present invention relates to the technical field of measuring electric variables, and discloses a current detection device of a Hall current sensor, comprising: a detection box, an inner core assembly mechanism is arranged inside the detection box, and the inner core assembly mechanism comprises: a circuit board and two wiring parts; the circuit board is provided with a pin hole for installing the inner core of the Hall sensor, and a magnetic ring is arranged just above the pin hole, and the inner core of the Hall sensor can be inserted into the pin hole on the circuit board, and the inner core of the Hall sensor is moved to the inside of the magnetic ring by the counterclockwise rotation of the circuit board, forming a simple plate Hall current sensor structure; the present invention realizes the rapid installation and positioning of the inner core of the Hall sensor through the inner core assembly mechanism. The pin hole design on the circuit board enables the inner core of the Hall sensor to be easily inserted and fixed, and at the same time, the inner core can be accurately moved to the inside of the magnetic ring by the counterclockwise rotation of the circuit board, forming a stable plate Hall current sensor structure.

Description

Technical Field

[0001] The invention relates to the field of measuring electric variables, and more specifically, to a current detection device of a Hall current sensor. Background Art

[0002] The Hall current sensor is made according to the Hall effect principle and applies Ampere's law, that is, a magnetic field proportional to the current is generated around the current-carrying conductor, and the Hall device is used to measure this magnetic field, thus making non-contact measurement of current possible. The Hall device is a magnetoelectric conversion device made of semiconductor materials. If a control current IC is passed through the input end, when a magnetic field B passes through the magnetic sensing surface of the device, a Hall potential VH appears at the output end.

[0003] The working principle of the Hall current sensor is based on the Hall effect, that is, when current passes through a wire, a magnetic field is generated around it. This magnetic field is sensed by the Hall element and converted into a voltage signal, thereby reflecting the magnitude of the current. However, the distribution and intensity of the magnetic field will change with the relative position of the wire and the Hall element.

[0004] However, since the Hall current sensor is based on magnetic field measurement, when the position of the wire changes, the magnetic field relationship between the Hall element and the wire will change. This change will cause the sensor to have a position error, that is, a measurement error caused by the different wire positions, which affects the accuracy of the measurement results. For this reason, we propose a current detection device for a Hall current sensor. Summary of the invention

[0005] The present invention provides a current detection device for a Hall current sensor, which solves the technical problem in the related art that measurement errors caused by different wire positions affect the accuracy of measurement results.

[0006] The present invention provides a current detection device of a Hall current sensor, comprising: a detection box, an inner core assembly mechanism is arranged inside the detection box, and the inner core assembly mechanism comprises: a circuit board and two wiring members;

[0007] The circuit board is provided with a pin hole for installing the inner core of the Hall sensor, and a magnetic ring is provided just above the pin hole. The inner core of the Hall sensor can be inserted into the pin hole on the circuit board, and the inner core of the Hall sensor moves to the inside of the magnetic ring by rotating the circuit board counterclockwise, thus forming a simple board Hall current sensor structure;

[0008] Each wiring member includes a wire rope, wherein the wire rope forms a winding section at the center of the magnetic ring to ensure that the energized wire to be detected can pass through the center of the winding section, ensuring that the energized wires of all Hall sensor cores are in the same position during the detection process.

[0009] Furthermore, a data cable is fixedly provided at one end of the detection box, and a data plug is fixedly provided at the end of the data cable away from the detection box. The detection box is also provided with a wire passing port and a core loading port, and the wire passing port is located above the core loading port, and the winding section of the current-carrying conductor is located in the wire passing port.

[0010] Furthermore, the inner core combination mechanism also includes a protective frame, the circuit board is fixed in the protective frame, a rotating cylinder is fixedly provided at one end of the protective frame away from the inner core of the Hall sensor, a torsion spring is provided in the rotating cylinder, and the protective frame is rotatably connected to the detection box through the rotating cylinder.

[0011] Furthermore, a seesaw body with an inclined structure is fixedly provided on one side of the rotating cylinder away from the protective frame, and the seesaw body and the protective frame form an obtuse angle. A universal ball cover is fixedly provided on the upper wall of one end of the seesaw body away from the rotating cylinder, a universal ball is rotatably provided in the universal ball cover, and a power column that passes through the detection box is fixedly provided on the universal ball.

[0012] Furthermore, a fixed foot balloon is fixedly embedded in the inner wall of the pin port, and a plurality of pressed balloons are fixedly embedded in the upper wall of the circuit board. The pressed balloons correspond to the pin ports one by one, and the pressed balloons are just located between the inner core of the Hall sensor and the circuit board. The pressed balloons are connected to the corresponding fixed foot balloons, and the outer surfaces of the fixed foot balloons are coated with a conductive coating.

[0013] Furthermore, a core inlet is provided on one side of the magnetic ring near the pin port, and a limit plate fixedly connected to the detection box is provided on the core inlet. The core inlet matches the inner core of the Hall sensor, and the depth of the core inlet is smaller than the height of the inner core of the Hall sensor.

[0014] Furthermore, the routing component also includes a routing frame, and the routing frame is fixedly connected to the detection box, two ends of the cable tie respectively pass through the lower left corner and the upper right corner of the routing frame, and a total cable tie is provided at the gathering point.

[0015] Furthermore, a gear plate 1 is provided at one end of the total tie rope away from the tie rope, and the total tie rope is wound on the gear plate 1. A gear plate 2 is meshedly provided on one side of the gear plate 1, and a power rope is wound on the gear plate 2. The end of the power rope away from the gear plate 2 is fixedly connected to the protective frame.

[0016] Furthermore, both the gear plate 2 and the gear plate 1 are rotatably connected to the detection box, and the diameter of the gear plate 1 is larger than the diameter of the gear plate 2.

[0017] Furthermore, a plurality of support frames are fixedly provided on the outer wall of the wire fixing frame, a rope winding wheel is rotatably provided in the support frame, the rope winding wheel and the support frame are driven by a winding spring, a pull rope wire is wound on the rope winding wheel, and the end of the pull rope wire away from the rope winding wheel passes through the wire fixing frame and is fixedly connected with the wire bundle rope, the magnetic ring is located between the two wire fixing frames, and the three do not contact each other, and at the same time, the two wire fixing frames are made of insulating materials.

[0018] The beneficial effects of the present invention are:

[0019] The present invention realizes the rapid installation and positioning of the Hall sensor core through the core combination mechanism. The pin port design on the circuit board allows the Hall sensor core to be easily inserted and fixed. At the same time, through the counterclockwise rotation of the circuit board, the core can be accurately moved to the inside of the magnetic ring to form a stable plate Hall current sensor structure. This design not only simplifies the installation steps and improves work efficiency, but also ensures the stability and accuracy of the sensor structure;

[0020] The setting of the magnetic ring not only provides a stable magnetic field environment for the inner core of the Hall sensor, but also ensures that the energized wire can pass through and remain in the same position through the winding section design at the center of the circle. This design effectively avoids the influence of the wire position offset on the detection results and improves the accuracy of the detection. At the same time, the winding method of the cable tie is simple and easy, which is convenient for users to quickly fix the wire, further improving the usability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the right view of the detection box of the present invention;

[0023] Figure 3 The present invention Figure 2 The enlarged schematic diagram at A in the middle;

[0024] Figure 4 It is a schematic diagram of the protective frame structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the compressed balloon of the present invention;

[0026] Figure 6 It is a schematic diagram of the protective frame and gear plate structure of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the magnetic ring and the inner core of the Hall sensor of the present invention;

[0028] Figure 8 It is a schematic diagram of the wire setting frame structure of the present invention;

[0029] Fig. 9 It is a schematic diagram of the top view structure of the magnetic ring of the present invention.

[0030] In the figure: 11, detection box; 12, wire passing port; 13, core loading port; 14, data cable; 15, data plug; 2, inner core assembly mechanism; 21, protection frame; 22, magnetic ring; 23, Hall sensor inner core; 24, pin port; 25, fixed foot balloon; 26, pressed balloon; 27, circuit board; 28, rotating cylinder; 29, torsion spring; 201, seesaw body; 202, universal ball cover; 203, universal ball; 204, limiting slot; 205, power column; 206, limiting plate; 207, conductive coating; 208, core feeding port; 31, cable tie; 32, side groove; 33, rope pulling wire; 34, fixed wire frame; 35, total cable tie; 36, gear plate one; 37, gear plate two; 38, power rope; 39, rope winding wheel; 301, support frame. DETAILED DESCRIPTION

[0031] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0032] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, a current detection device of a Hall current sensor comprises: a detection box 11, an inner core assembly mechanism 2 is arranged inside the detection box, and the inner core assembly mechanism 2 comprises: a circuit board 27 and two wiring members;

[0033] The circuit board 27 is provided with a pin hole 24 for installing the Hall sensor core 23, and a magnetic ring 22 is provided just above the pin hole 24. The Hall sensor core 23 can be inserted into the pin hole 24 on the circuit board 27, and the counterclockwise rotation of the circuit board 27 moves the Hall sensor core 23 to the inside of the magnetic ring 22, forming a simple plate Hall current sensor structure;

[0034] Each wiring member includes a wire tie rope 31, wherein the wire tie rope 31 forms a winding section at the center of the magnetic ring 22 to ensure that the energized wire to be detected can pass through the center of the winding section, ensuring that the energized wires of all Hall sensor cores 23 are in the same position during the detection process.

[0035] A data line 14 is fixedly provided at one end of the detection box 11, and a data plug 15 is fixedly provided at the end of the data line 14 away from the detection box 11. The detection box 11 is also provided with a wire passing opening 12 and a core loading opening 13, and the wire passing opening 12 is located above the core loading opening 13, and the winding section of the current-carrying conductor is located in the wire passing opening 12.

[0036] The inner core assembly mechanism 2 also includes a protective frame 21, in which a circuit board 27 is fixed. A rotating cylinder 28 is fixedly provided at one end of the protective frame 21 away from the Hall sensor inner core 23, in which a torsion spring 29 is provided. The protective frame 21 is rotatably connected to the detection box 11 via the rotating cylinder 28.

[0037] A seesaw body 201 with an inclined structure is fixedly provided on one side of the rotating cylinder 28 away from the protective frame 21, and the seesaw body 201 forms an obtuse angle with the protective frame 21. A universal ball cover 202 is fixedly provided on the upper wall of one end of the seesaw body 201 away from the rotating cylinder 28, a universal ball 203 is rotatably provided in the universal ball cover 202, and a power column 205 that passes through the detection box 11 is fixedly provided on the universal ball 203.

[0038] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the inner wall of the pin opening 24 is fixedly inlaid with a fixed foot balloon 25, and the upper wall of the circuit board 27 is fixedly inlaid with a plurality of pressed balloons 26. The pressed balloons 26 correspond to the pin openings 24 one by one, and the pressed balloons 26 are just between the Hall sensor inner core 23 and the circuit board 27. The pressed balloons 26 are connected to the corresponding fixed foot balloons 25, and the outer surface of the fixed foot balloons 25 is coated with a conductive coating 207.

[0039] A core inlet 208 is provided on one side of the magnetic ring 22 near the pin port 24 , and a limit plate 206 fixedly connected to the detection box 11 is provided on the core inlet 208 . The core inlet 208 matches the Hall sensor inner core 23 , and the depth dimension of the core inlet 208 is smaller than the height dimension of the Hall sensor inner core 23 .

[0040] Embodiment 1

[0041] First, pass the power wire through the wire opening 12 and the winding section of the wire tie rope 31, and start the power supply. Then install the Hall sensor core 23 from the core installation opening 13 to the circuit board 27, so that the pins of the Hall sensor core 23 are inserted into the pin opening 24. The protective frame 21 also has an opening at the position aligned with the pin opening 24. At this time, the Hall sensor core 23 is just placed on the inflated compressed balloon 26.

[0042] The data line 14 on the detection box 11 is connected to other matching devices through the data plug 15 to provide electricity and transmit data to the circuit board 27;

[0043] Secondly, the staff manually presses the power column 205 downward to retract the power column 205 downward into the detection box 11, and the power column 205 drives the universal ball 203 to apply force to the seesaw body 201, and as the universal ball 203 moves downward, it drives the protection frame 21 to rotate counterclockwise around the rotating cylinder 28 as the center of the circle, and at this time the power column 205 is stuck in the limit slot 204;

[0044] While the protective frame 21 rotates counterclockwise with the rotating cylinder 28 as the center, it drives the circuit board 27 to rotate in the same direction, so that the Hall sensor core 23 is displaced to the core inlet 208. The Hall sensor core 23 is squeezed by the limit plate 206, so that the Hall sensor core 23 squeezes multiple compressed balloons 26 at the same time, so that the air in the compressed balloons 26 enters the corresponding fixed foot balloon 25. As the air pressure in the fixed foot balloon 25 increases, it expands. Through the expansion of the fixed foot balloon 25, the pins of the Hall sensor core 23 can be tightly squeezed into the pin opening 24. At the same time, the conductive coating 207 on the surface of the fixed foot balloon 25 contacts the pins of the Hall sensor core 23, which plays a role in smooth connection.

[0045] When the detection is completed, the protective frame 21 is reset by the elasticity of the torsion spring 29, so that the Hall sensor inner core 23 is moved out from the core inlet 208. At the same time, the Hall sensor inner core 23 is pushed upward by the elasticity of the multiple compressed balloons 26, so that the Hall sensor inner core 23 is relaxed, which is convenient for the staff to take out the Hall sensor inner core 23 after the detection.

[0046] Then replace the next Hall sensor core 23 for testing. As long as the data detected by the Hall sensor core 23 is within the preset range, it means that this Hall sensor core 23 is a good product, so that this Hall sensor core 23 can complete subsequent processing and complete the processing of a complete Hall current sensor, while defective products do not require subsequent processing.

[0047] Embodiment 2

[0048] When the Hall sensor core 23 and the magnetic ring 22 form a complete Hall current sensor, the current of other wires can be detected. The current of the wire can be detected by simply replacing the energized wire passing through the wire port 12 with a wire with detection.

[0049] like Figure 6 , Figure 8 and Fig. 9 As shown, the routing member also includes a routing frame 34, and the routing frame 34 is fixedly connected to the detection box 11, the two ends of the cable tie 31 respectively pass through the lower left corner and the upper right corner of the routing frame 34, and a main cable tie 35 is provided at the gathering point.

[0050] A gear plate 1 36 is provided at one end of the total tie rope 35 away from the tie rope 31, and the total tie rope 35 is wound on the gear plate 1 36. A gear plate 2 37 is meshed with one side of the gear plate 1 36, and a power rope 38 is wound around the gear plate 2 37. The end of the power rope 38 away from the gear plate 2 37 is fixedly connected to the protective frame 21.

[0051] Both the second gear plate 37 and the first gear plate 36 are rotatably connected to the detection box 11 , and the diameter of the first gear plate 36 is larger than the diameter of the second gear plate 37 .

[0052] Several groups of support frames 301 are fixedly set on the outer wall of the wire frame 34, and a rope winding wheel 39 is rotatably set in the support frame 301. The rope winding wheel 39 and the support frame 301 are driven by a winding spring. A pull rope wire 33 is wound on the rope winding wheel 39. The end of the pull rope wire 33 away from the rope winding wheel 39 passes through the wire frame 34 and is fixedly connected to the wire rope 31. The magnetic ring 22 is located between the two wire frames 34, and the three do not contact each other. At the same time, the two wire frames 34 are made of insulating materials.

[0053] Embodiment 3

[0054] On the basis of the first and second embodiments, the protective frame 21 is rotated counterclockwise to insert the Hall sensor inner core 23 into the core inlet 208, so that the power rope 38 can be pulled, so that the power rope 38 wound by the second gear plate 37 is elongated, and the second gear plate 37 is driven to rotate, and the gear plate 1 36 is driven by the second gear plate 37 to rotate to wind up the total rope 35. Because the diameter of the gear plate 1 36 is larger than the diameter of the gear plate 2 37, the length of the wound total rope 35 can be greater than the length released by the second gear plate 37;

[0055] The total tie rope 35 is pulled to reduce the diameter of the winding section of the tie rope 31, thereby fixing the current-carrying wire at the center of the wire-passing opening 12, and the two tie ropes 31 simultaneously bind the current-carrying wire, which can ensure that the section of the current-carrying wire passing through the wire-passing opening 12 is always kept in the same position, thereby achieving the effect of accurate detection;

[0056] When the detection is completed, the pull rope wires 33 are reeled in by multiple rope winding wheels 39, and the wire tie rope 31 can be pulled simultaneously by multiple pull rope wires 33, so that the wire tie rope 31 loosens the restraint on the live wire and makes the winding section of the wire tie rope 31 tend to the side groove 32. The side groove 32 is provided on the inner wall of the wire passing opening 12, which is conducive to replacing the live wire and facilitating the insertion of the live wire.

[0057] Working steps:

[0058] Connecting devices: The data line 14 on the detection box 11 is connected to other matching devices through the data plug 15 to provide electricity and transmit data to the circuit board 27;

[0059] Preparation and installation: Pass the power wire through the wire opening 12 and the winding section of the wire tie rope 31, and start the power supply. Install the Hall sensor core 23 from the core installation opening 13 to the circuit board 27, and insert the pins of the Hall sensor core 23 into the pin opening 24;

[0060] Operate the protection frame 21: manually press the power column 205 downward, so that the power column 205 drives the protection frame 21 to rotate counterclockwise with the rotating cylinder 28 as the center. The rotation of the protection frame 21 drives the circuit board 27 to rotate in the same direction, so that the Hall sensor core 23 moves into the core inlet 208;

[0061] Fixing and connection: The Hall sensor core 23 is squeezed by the limiting plate 206, so that the Hall sensor core 23 squeezes multiple compressed balloons 26 at the same time, so that the air in the compressed balloons 26 enters the corresponding fixed foot balloons 25. The expansion of the fixed foot balloons 25 can squeeze the pins of the Hall sensor core 23 tightly into the pin openings 24. At the same time, the conductive coating 207 on the surface of the fixed foot balloons 25 contacts the pins of the Hall sensor core 23, which plays a role in smooth connection;

[0062] Detection and reset: Perform current detection. After the detection is completed, the protective frame 21 is reset by the elasticity of the torsion spring 29, so that the Hall sensor core 23 is moved out from the core inlet 208. Driven by the expansion elasticity of the multiple compressed balloons 26, the Hall sensor core 23 is pushed upward to relax the Hall sensor core 23 for easy removal;

[0063] Replacement and judgment: replace the next Hall sensor core 23, and perform detection to determine whether the data of the Hall sensor core 23 is within the preset range. If so, it is a good product and subsequent processing is performed. If not, it is a defective product and subsequent processing is not performed.

[0064] Through the combination of the magnetic ring 22 and the Hall sensor core 23, the current of the energized wire can be accurately detected. Through the design of the wire tie 31 and the wire fixing frame 34, it can be ensured that the energized wire to be detected always remains in the same position, thereby improving the accuracy of the detection.

[0065] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A current detection device for a Hall current sensor, characterized in that: include: A detection box (11) is provided with an inner core assembly mechanism (2) therein, wherein the inner core assembly mechanism (2) comprises: a circuit board (27) and two alignment components; The circuit board (27) is provided with a pin hole (24) for mounting a Hall sensor inner core (23); a magnetic ring (22) is provided directly above the pin hole (24); the Hall sensor inner core (23) can be inserted into the pin hole (24) on the circuit board (27); and the Hall sensor inner core (23) is moved into the magnetic ring (22) by the counterclockwise rotation of the circuit board (27), thereby forming a simple plate Hall current sensor structure; Each of the wiring members comprises a wiring rope (31), wherein the wiring rope (31) forms a winding section at the center of the magnetic ring (22) to ensure that the energized wire to be detected can pass through the center of the winding section, thereby ensuring that the energized wires of all Hall sensor cores (23) are in the same position during the detection process; Each of the routing components further comprises a routing frame (34), and the routing frame (34) is fixedly connected to the detection box (11), the two ends of the cable tie rope (31) respectively pass through the lower left corner and the upper right corner of the routing frame (34), and a main cable tie rope (35) is provided at the gathering point.

2. The current detection device of a Hall current sensor according to claim 1, characterized in that: A data line (14) is fixedly provided at one end of the detection box (11), and a data plug (15) is fixedly provided at one end of the data line (14) away from the detection box (11). The detection box (11) is also provided with a line passing opening (12) and a core loading opening (13), wherein the line passing opening (12) is located above the core loading opening (13), and a winding section of the current-carrying conductor is located in the line passing opening (12).

3. The current detection device of a Hall current sensor according to claim 1, characterized in that: The inner core assembly mechanism (2) further comprises a protection frame (21), the circuit board (27) being fixed in the protection frame (21), a rotating cylinder (28) being fixedly provided at one end of the protection frame (21) away from the Hall sensor inner core (23), a torsion spring (29) being provided in the rotating cylinder (28), and the protection frame (21) being rotationally connected to the detection box (11) via the rotating cylinder (28).

4. The current detection device of a Hall current sensor according to claim 3, characterized in that: A seesaw body (201) with an inclined structure is fixedly provided on one side of the rotating cylinder (28) away from the protective frame (21), and the seesaw body (201) forms an obtuse angle with the protective frame (21); a universal ball cover (202) is fixedly provided on the upper wall of one end of the seesaw body (201) away from the rotating cylinder (28); a universal ball (203) is rotatably provided in the universal ball cover (202), and a power column (205) that passes through the detection box (11) is fixedly provided on the universal ball (203).

5. The current detection device of a Hall current sensor according to claim 1, characterized in that: A foot-fixing balloon (25) is fixedly embedded in the inner wall of the pin hole (24), and a plurality of pressed balloons (26) are fixedly embedded in the upper wall of the circuit board (27). The pressed balloons (26) correspond to the pin holes (24) one by one, and the pressed balloons (26) are just located between the inner core (23) of the Hall sensor and the circuit board (27). The pressed balloons (26) are connected to the corresponding foot-fixing balloons (25), and the outer surface of the foot-fixing balloons (25) is coated with a conductive coating (207).

6. The current detection device of a Hall current sensor according to claim 1, characterized in that: A core inlet (208) is provided on one side of the magnetic ring (22) close to the pin opening (24); a limit plate (206) fixedly connected to the detection box (11) is provided on the core inlet (208); the core inlet (208) matches the Hall sensor inner core (23); and the depth dimension of the core inlet (208) is smaller than the height dimension of the Hall sensor inner core (23).

7. The current detection device of a Hall current sensor according to claim 1, characterized in that: A gear plate 1 (36) is provided at one end of the total tie rope (35) away from the tie rope (31), the total tie rope (35) is wound around the gear plate 1 (36), a gear plate 2 (37) is meshedly provided on one side of the gear plate 1 (36), a power rope (38) is wound around the gear plate 2 (37), and an end of the power rope (38) away from the gear plate 2 (37) is fixedly connected to the protective frame (21).

8. The current detection device of a Hall current sensor according to claim 7, characterized in that: The second gear plate (37) and the first gear plate (36) are both rotatably connected to the detection box (11), and the diameter of the first gear plate (36) is larger than the diameter of the second gear plate (37).

9. The current detection device of a Hall current sensor according to claim 8, characterized in that: A plurality of support frames (301) are fixedly arranged on the outer wall of the wiring frame (34), a rope reel (39) is rotatably arranged in the support frame (301), the rope reel (39) and the support frame (301) are driven by a coil spring, a pull rope (33) is wound around the rope reel (39), one end of the pull rope (33) away from the rope reel (39) passes through the wiring frame (34) and is fixedly connected to the wire harness (31), the magnetic ring (22) is located between the two wiring frames (34), and the magnetic ring (22) and the two wiring frames (34) are not in contact with each other, and the two wiring frames (34) are both made of insulating material.

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