A current sensor test apparatus

Abstract

The utility model relates to current sensor testing arrangement technical field, especially, relate to a kind of current sensor testing equipment, including test platform, base, drive mechanism, electrically conductive part, acquisition device, test board, probe and power supply, base and electrically conductive part are installed in test platform, base is used to install the circuit board to be measured, electrically conductive part is used to be arranged in the detection hole on the circuit board to be measured, electrically conductive part has the input portion of positive pole electrical connection with power supply and the output portion of negative pole electrical connection with power supply, test board is movably assembled on test platform along first direction, probe is installed in test board, probe is electrically connected with acquisition device, drive mechanism is connected with test board, drive mechanism can drive test board to move towards the direction of approaching or away from base, to make probe contact or separate from the circuit board to be measured.When judging that the circuit board to be measured does not meet the requirements, the circuit board to be measured can be debugged, and the circuit board that meets the requirements is loaded into the current sensor shell, without causing waste.

Description

Technical Field

[0001] This utility model relates to the technical field of current sensor testing devices, and in particular to a current sensor testing device. Background Technology

[0002] A current sensor is a device used to detect the magnitude of current and convert it into a measurable signal. To ensure the measurement performance of a current sensor, its measurement accuracy needs to be tested at the factory.

[0003] An existing current sensor measuring device includes a conductive component and a power supply. The conductive component is connected to the positive and negative terminals of the power supply via wires to form a circuit. The conductive component is inserted into the detection hole of the current sensor. After the power supply is turned on, the power supply outputs current to the conductive component. The current sensor transmits the detected current magnitude signal to a data acquisition device connected to the current sensor. The data acquisition device compares the measured value of the current sensor with the current output value of the power supply and calculates whether the measured value of the current sensor is within the error range.

[0004] However, existing current sensor testing equipment can only test finished products. When the measurement results of the current sensor under test do not meet the requirements, it can only be scrapped, resulting in waste. Summary of the Invention

[0005] This utility model provides a current sensor testing device, which aims to solve the problem that existing current sensor testing devices can only test finished products. When the measurement results of the current sensor under test do not meet the requirements, it can only be scrapped, resulting in waste.

[0006] To address the aforementioned problems, this utility model provides a current sensor testing device, comprising a testing platform, a base, a driving mechanism, a conductive component, a data acquisition device, a test board, a probe, and a power supply. The base and the conductive component are mounted on the testing platform. The base is used to mount the circuit board under test, and the conductive component is used to pass through a detection hole on the circuit board under test. The conductive component has an input portion electrically connected to the positive terminal of the power supply and an output portion electrically connected to the negative terminal of the power supply. The test board is movably mounted on the test platform along a first direction. The probe is mounted on the test board and electrically connected to the acquisition device. The drive mechanism is connected to the test board and can drive the test board to move closer to or further away from the base so that the probe contacts or detaches from the circuit board under test.

[0007] Optionally, the probe is provided in multiple forms, including a positive probe and a negative probe. The positive probe is used to contact the positive contact on the circuit board under test, and the negative probe is used to contact the negative contact on the circuit board under test.

[0008] Optionally, the current sensor testing device further includes a conductive plate electrically connected to the positive terminal of the power supply. The conductive plate is mounted on the test board, and the driving mechanism is used to drive the test board to move closer to the base so that the conductive plate contacts the input section.

[0009] Optionally, the current sensor testing equipment further includes a mounting frame, which is mounted on the testing platform. The driving mechanism is mounted on the mounting frame. The mounting frame is provided with a guide rod extending along the first direction. The testing plate is provided with a guide hole, and the guide rod passes through the guide hole.

[0010] Optionally, the drive mechanism includes a connecting rod, a first rotating shaft, a transmission component, and a handle. The handle includes a first driving part extending along a second direction and a second driving part extending along the first direction. The first rotating shaft extends along a third direction, and the connecting rod and the transmission component both extend along the first direction. The first rotating shaft is connected to the mounting bracket. The end of the second driving part near the base is rotatably mounted on the first rotating shaft. The end of the transmission member near the base is hinged to the end of the connecting rod away from the base. The end of the transmission member away from the test plate is hinged to the end of the first driving part near the second driving part. The end of the transmission member near the test plate is connected to the connecting rod. The connecting rod is connected to the test plate. The second direction intersects the first direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0011] Optionally, the mounting bracket is provided with a connecting ear, and the first rotating shaft is connected to the connecting ear.

[0012] Optionally, there are two connecting ears, which are spaced apart along the third direction. The first rotating shaft bracket passes through the two connecting ears, and the second driving part is sandwiched between the two connecting ears.

[0013] Optionally, the base is provided with a through hole, and the conductive element passes through the through hole and the test platform along the first direction; The current sensor testing equipment also includes a limiting component, which is used to limit the circuit board under test on the base.

[0014] Optionally, one side of the base facing the test board is a mounting surface for mounting the circuit board to be tested. The limiting component includes a limiting rod that extends along the first direction. One end of the limiting rod away from the test board is connected to the base. The limiting rod is used to engage with a slot on the edge of the circuit board to be tested.

[0015] Optionally, multiple limiting rods are provided, and the multiple limiting rods are arranged around the through hole.

[0016] According to the current sensor testing device provided in this embodiment of the present invention, a conductive element is inserted into the detection hole of the circuit board under test. The input part of the conductive element is electrically connected to the positive terminal of the power supply, and the output part is electrically connected to the negative terminal of the power supply. The power supply provides power to the conductive element. When the test board moves towards the base, the probe on the test board contacts the circuit board, realizing the electrical connection between the circuit board and the acquisition device. The circuit board under test can detect the current on the conductive element and transmit the current value to the acquisition device. The acquisition device compares the measured current value with the current value output by the power supply. When it is determined that the circuit board under test does not meet the requirements, the circuit board under test can be adjusted, and a circuit board that meets the requirements can be installed into the current sensor housing without causing waste. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a current sensor testing device provided in an embodiment of the present invention; Figure 2 for Figure 1 Another perspective; Figure 3 for Figure 1 A schematic diagram of the structure of the central base.

[0019] Reference numerals in the accompanying drawings: 1. Test platform; 2. Mounting bracket; 3. Drive mechanism; 4. Handle; 5. First drive unit; 6. Second drive unit; 7. First rotating shaft; 8. Connecting ear; 9. Transmission component; 10. Connecting rod; 11. Mounting plate; 12. Guide rod; 13. Test plate; 14. Guide hole; 15. Probe; 16. Conductive plate; 17. Conductive component; 18. Input unit; 19. Circuit board under test; 20. Slot; 21. Base; 22. Limiting post; 23. Output unit; 24. Through hole; 25. Limiting rod; 26. Screw mounting hole; 27. Detection hole. Detailed Implementation

[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] As 1 to Figure 3 As shown in the figure, an embodiment of the present invention provides a current sensor testing device, including a test platform 1, a base 21, a drive mechanism 3, a conductive element 17, a data acquisition device, a test board 13, a probe 15, and a power supply. The base 21 and the conductive element 17 are mounted on the test platform 1. The base 21 is used to mount the circuit board 19 to be tested. The conductive element 17 is used to pass through the detection hole 27 on the circuit board 19 to be tested. The conductive element 17 has an input part 18 electrically connected to the positive terminal of the power supply and an output part 23 electrically connected to the negative terminal of the power supply.

[0023] The test board 13 is movably mounted on the test platform 1 along the first direction. The probe 15 is mounted on the test board 13 and is electrically connected to the acquisition device. The drive mechanism 3 is connected to the test board 13 and can drive the test board 13 to move closer to or further away from the base 21 so that the probe 15 contacts or detaches from the circuit board 19 under test.

[0024] In this embodiment, the detection target of the current sensor detection device is the circuit board inside the current sensor, and the circuit board is detected before being installed into the current sensor.

[0025] In this embodiment, when testing the circuit board, the conductive element 17 passes through the detection hole 27 of the circuit board 19 under test. The input part 18 of the conductive element 17 is electrically connected to the positive terminal of the power supply, and the output part 23 is electrically connected to the negative terminal of the power supply. The power supply provides power to the conductive element 17. When the test board 13 moves towards the base 21, the probe 15 on the test board 13 contacts the circuit board, realizing the electrical connection between the circuit board and the acquisition device. The circuit board 19 under test can detect the current on the conductive element 17 and transmit the current value to the acquisition device. The acquisition device compares the measured current value with the current value output by the power supply. When it is determined that the circuit board 19 under test does not meet the requirements, the circuit board 19 under test can be adjusted, and a circuit board that meets the requirements can be installed into the current sensor housing without causing waste.

[0026] In this embodiment, the first direction is the up-down direction, and the third direction is the left-right direction.

[0027] In one embodiment, a plurality of probes 15 are provided, including a positive probe 15 and a negative probe 15. The positive probe 15 is used to contact the positive contact on the circuit board 19 under test, and the negative probe 15 is used to contact the negative contact on the circuit board 19 under test.

[0028] In this embodiment, the probe 15 penetrates the test board 13 from top to bottom. The top end of the probe 15 is connected to the acquisition device via a cable, and the bottom end of the probe 15 is used to contact the circuit board.

[0029] In this embodiment, both the positive probe 15 and the negative probe 15 are connected to the data acquisition device via cables.

[0030] In this embodiment, the positive and negative contacts on the circuit board are electrically connected through the printed circuit of the circuit board. When the bottom of the positive probe 15 contacts the positive contact on the circuit board, the bottom of the negative probe 15 contacts the negative contact on the circuit board, thus realizing a current loop between the acquisition device and the circuit board, thereby transmitting the current information measured by the circuit board to the acquisition device.

[0031] In this embodiment, among the multiple probes 15, there is also a voltage probe 15, which can measure the voltage information on the circuit board when it comes into contact with the circuit board.

[0032] In one embodiment, the current sensor testing device further includes a conductive plate 16, which is electrically connected to the positive terminal of the power supply. The conductive plate 16 is mounted on the test plate 13, and the driving mechanism 3 is used to drive the test plate 13 to move towards the base 21 so that the conductive plate 16 contacts the input part 18.

[0033] In this embodiment, the bottom of the conductive element 17 is electrically connected to the power supply via a cable. In this embodiment, the test board 13 is an insulating component, the conductive plate 16 is plate-shaped, and the conductive plate 16 is connected to the test board 13 by screws.

[0034] In this embodiment, the conductive plate 16 is electrically connected to the power supply via cables soldered onto the conductive plate 16.

[0035] In this embodiment, the side of the conductive plate 16 facing the base 21 is flat. When the probe 15 on the test board 13 contacts the circuit board, the conductive plate 16 is pressed against the top of the conductive element 17 (the top of the input part 18 of the conductive element 17), thus realizing a current loop between the power supply and the conductive element 17, thereby supplying power to the conductive element 17.

[0036] In one embodiment, the current sensor testing equipment further includes a mounting frame 2, which is mounted on the test platform 1. A drive mechanism 3 is mounted on the mounting frame 2. The mounting frame 2 is provided with a guide rod 12 extending in a first direction. The test plate 13 is provided with a guide hole 14, through which the guide rod 12 passes.

[0037] In this embodiment, the mounting bracket 2 is erected vertically on the test platform 1 in the vertical direction.

[0038] In this embodiment, the guide rod 12 extends in the vertical direction, and the two guide rods 12 are spaced apart in the horizontal direction. The two guide rods 12 correspond one-to-one with the two guide holes 14 provided on the two test plates 13.

[0039] In this embodiment, the guide rod 12 can guide the test plate 13 in the vertical direction, preventing the test plate 13 from tilting when moving up and down.

[0040] In one embodiment, the drive mechanism 3 includes a connecting rod 10, a first rotating shaft 7, a transmission member 9, and a handle 4. The handle 4 includes a first drive part 5 extending in a second direction and a second drive part 6 extending in a first direction. The first rotating shaft 7 extends in a third direction, and the connecting rod 10 and the transmission member 9 both extend in the first direction.

[0041] The first rotating shaft 7 is connected to the mounting bracket 2. The end of the second driving part 6 near the base 21 is rotatably mounted on the first rotating shaft 7. The end of the transmission component 9 near the base 21 is hinged to the end of the connecting rod 10 away from the base 21. The end of the transmission component 9 away from the test plate 13 is hinged to the end of the first driving part 5 near the second driving part 6. The end of the transmission component 9 near the test plate 13 is connected to the connecting rod 10. The connecting rod 10 is connected to the test plate 13.

[0042] The second direction intersects the first direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

[0043] In this embodiment, the included angle between the first driving unit 5 and the second driving unit 6 is between 90° and 180°.

[0044] In this embodiment, the first rotating shaft 7 protrudes from the side of the mounting bracket 2 facing the base 21.

[0045] In this embodiment, the first rotating shaft 7 extends in the left-right direction, and the second driving part 6 is rotatably assembled to the first rotating shaft 7 around the axis of the first rotating shaft 7.

[0046] In this embodiment, the top end of the transmission member 9 is hinged to the position where it connects with the first driving part 5 and the second driving part 6, and the bottom end of the transmission member 9 is hinged to the top end of the connecting rod 10.

[0047] In this embodiment, a mounting plate 11 is fixed at the bottom end of the connecting rod 10, and the mounting plate 11 is screwed to the test plate 13.

[0048] In one embodiment, the mounting bracket 2 is provided with a connecting ear 8, and the first rotating shaft 7 is connected to the connecting ear 8.

[0049] There are two connecting ears 8, which are spaced apart along a third direction. The first rotating shaft 7 passes through the two connecting ears 8, and the second driving part 6 is clamped between the two connecting ears 8.

[0050] In this embodiment, the two connecting ears 8 are spaced apart to the left and right. The left end of the first rotating shaft 7 is fixed to the left connecting ear 8, and the right end of the first rotating shaft 7 is fixed to the right connecting ear 8.

[0051] In this embodiment, the bottom of the second drive unit 6 is inserted between the two connecting ears 8, and the first rotating shaft 7 passes through the second drive unit 6 in the left-right direction.

[0052] In this embodiment, the second driving part 6 is plate-shaped and has two opposite sides along a third direction. One side contacts the left connecting ear 8, and the other side contacts the right connecting ear. The two connecting ears 8 can limit the second driving part 6 and prevent the second driving part 6 from shaking.

[0053] In one embodiment, the base 21 is provided with a through hole 24, and the conductive element 17 is disposed in the through hole 24 and the test platform 1 along a first direction.

[0054] The current sensor testing equipment also includes a limiting component, which is used to limit the circuit board 19 under test on the base 21.

[0055] In this embodiment, the conductive element 17 penetrates the test platform 1 in the vertical direction, and the through hole 24 is coaxially arranged with the detection hole 27 of the circuit board under test 19, so that when the conductive element 17 passes through the through hole 24, it also passes through the detection hole 27 of the circuit board under test 19.

[0056] In this embodiment, the input portion 18 (top) of the conductive element 17 is located above the test platform 1, and the output portion 23 (bottom) of the conductive element 17 is located below the test platform 1.

[0057] In one embodiment, the side of the base 21 facing the test board 13 is a mounting surface for mounting the circuit board 19 to be tested. The limiting component includes a limiting rod 25, which extends along a first direction. The end of the limiting rod 25 away from the test board 13 is connected to the base 21. The limiting rod 25 is used to engage with the slot 20 on the edge of the circuit board 19 to be tested.

[0058] In this embodiment, the top surface of the base 21 is the mounting surface, and the limiting rod 25 extends in the vertical direction. The limiting rod 25 is used to lock into the slot 20 on the peripheral edge of the circuit board 19 to be tested, thereby limiting the circuit board 19 to be tested.

[0059] In this embodiment, the bottom surface of the test board 13 is also provided with a limiting post 22. In the vertical direction, the length of the limiting post 22 is the same as the length of the probe 15 located below the limiting plate. When the bottom of the probe 15 contacts the circuit board, the limiting post 22 abuts against the upper side of the circuit board, which can limit the circuit board in the vertical direction with respect to the base 21.

[0060] In one embodiment, multiple limiting rods 25 are provided, and the multiple limiting rods 25 are arranged around the through hole 24.

[0061] In this embodiment, multiple limiting rods 25 can make the circuit board 19 under test more stable.

[0062] In this embodiment, the base 21 is provided with screw mounting holes 26, and the base 21 is screwed to the test platform 1.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] According to the current sensor testing device provided in this embodiment of the present invention, the conductive element 17 is inserted through the detection hole 27 of the circuit board 19 under test. The input part 18 of the conductive element 17 is electrically connected to the positive terminal of the power supply, and the output part 23 is electrically connected to the negative terminal of the power supply. The power supply provides power to the conductive element 17. When the test board 13 moves towards the base 21, the probe 15 on the test board 13 contacts the circuit board, realizing the electrical connection between the circuit board and the acquisition device. The circuit board 19 under test can detect the current on the conductive element 17 and transmit the current value to the acquisition device. The acquisition device compares the measured current value with the current value output by the power supply. When it is determined that the circuit board 19 under test does not meet the requirements, the circuit board 19 under test can be adjusted, and a circuit board that meets the requirements can be installed into the current sensor housing without causing waste.

[0065] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A current sensor testing device, characterized in that, The device includes a test platform (1), a base (21), a drive mechanism (3), a conductive element (17), a data acquisition device, a test board (13), a probe (15), and a power supply. The base (21) and the conductive element (17) are mounted on the test platform (1). The base (21) is used to mount the circuit board under test (19). The conductive element (17) is used to pass through the detection hole (27) on the circuit board under test (19). The conductive element (17) has an input part (18) electrically connected to the positive terminal of the power supply and an output part (23) electrically connected to the negative terminal of the power supply. The test board (13) is movably mounted on the test platform (1) along a first direction. The probe (15) is mounted on the test board (13). The probe (15) is electrically connected to the acquisition device. The drive mechanism (3) is connected to the test board (13). The drive mechanism (3) can drive the test board (13) to move closer to or further away from the base (21) so that the probe (15) contacts or detaches from the circuit board (19) under test.

2. The current sensor testing device according to claim 1, characterized in that, The probe (15) is provided in multiple ways, including a positive probe (15) and a negative probe (15). The positive probe (15) is used to contact the positive contact on the circuit board (19) under test, and the negative probe (15) is used to contact the negative contact on the circuit board (19) under test.

3. The current sensor testing device according to claim 1, characterized in that, The current sensor testing device also includes a conductive plate (16), which is electrically connected to the positive terminal of the power supply. The conductive plate (16) is mounted on the test plate (13). The driving mechanism (3) is used to drive the test plate (13) to move closer to the base (21) so that the conductive plate (16) contacts the input part (18).

4. The current sensor testing device according to claim 1, characterized in that, The current sensor testing equipment also includes a mounting frame (2), which is mounted on the test platform (1). The drive mechanism (3) is mounted on the mounting frame (2). The mounting frame (2) is provided with a guide rod (12) extending along the first direction. The test plate (13) is provided with a guide hole (14), and the guide rod (12) passes through the guide hole (14).

5. The current sensor testing device according to claim 4, characterized in that, The drive mechanism (3) includes a connecting rod (10), a first rotating shaft (7), a transmission component (9), and a handle (4). The handle (4) includes a first drive part (5) extending in a second direction and a second drive part (6) extending in the first direction. The first rotating shaft (7) extends in a third direction. The connecting rod (10) and the transmission component (9) both extend in the first direction. The first rotating shaft (7) is connected to the mounting bracket (2). The second driving part (6) is rotatably mounted on the first rotating shaft (7) at one end near the base (21). The transmission part (9) is hinged at one end near the base (21) to the end of the connecting rod (10) away from the base (21). The transmission part (9) is hinged at one end away from the test plate (13) to the end of the first driving part (5) near the second driving part (6). The transmission part (9) is connected to the connecting rod (10) at one end near the test plate (13). The connecting rod (10) is connected to the test plate (13). The second direction intersects the first direction, the third direction is perpendicular to the first direction, and the third direction is perpendicular to the second direction.

6. The current sensor testing device according to claim 5, characterized in that, The mounting bracket (2) is provided with a connecting ear (8), and the first rotating shaft (7) is connected to the connecting ear (8).

7. The current sensor testing device according to claim 6, characterized in that, The connecting ear (8) is provided in two parts, and the two connecting ears (8) are spaced apart along the third direction. The first rotating shaft (7) is mounted through the two connecting ears (8), and the second driving part (6) is sandwiched between the two connecting ears (8).

8. The current sensor testing device according to claim 1, characterized in that, The base (21) is provided with a through hole (24), and the conductive element (17) is provided through the through hole (24) and the test platform (1) along the first direction. The current sensor testing equipment also includes a limiting component, which is used to limit the circuit board (19) under test on the base (21).

9. The current sensor testing device according to claim 8, characterized in that, The side of the base (21) facing the test board (13) is a mounting surface for mounting the circuit board to be tested (19). The limiting component includes a limiting rod (25), which extends along the first direction. The end of the limiting rod (25) away from the test board (13) is connected to the base (21). The limiting rod (25) is used to engage with the slot (20) on the edge of the circuit board to be tested (19).

10. The current sensor testing device according to claim 9, characterized in that, Multiple limiting rods (25) are provided, and the multiple limiting rods (25) are arranged around the through hole (24).

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