Testing device of brushless motor control circuit board and testing method thereof

Abstract

The invention discloses a brushless motor control circuit board testing device and a testing method thereof, and relates to the technical field of circuit board testing, the brushless motor control circuit board testing device comprises a detection table, the detection table is provided with a testing mechanism used for testing electrical variables of a circuit board, and the testing mechanism comprises an electrical variable detector placed on the detection table and used for detecting the electrical variables of the circuit board; the electrical variable detector is electrically connected with a power supply of the detection table; the detection terminal is in plug-in connection with the electrical variable detector, and the detection terminal is used for being in contact with a detection part of the circuit board and transmitting electrical variable information of the circuit board to the electrical variable detector; the display screen is fixedly connected to the top of the electrical variable detector, and the display screen is used for displaying the electrical variable information data of the circuit board. By arranging the fixing mechanism, the circuit board can be conveniently fixed by utilizing the clamping mechanism, so that the test is facilitated, and the clamping mechanism and the circuit board can be driven to turn over through the turnover mechanism in the later period, so that the double-sided circuit board can be conveniently tested.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board testing, and particularly relates to a testing device and a testing method for a brushless motor control circuit board. Background Art

[0002] With the development of motor technology, various motors have emerged, and the relatively common one is the brushless motor. The brushless DC motor consists of a motor main body and a driver, and is a typical mechatronic product. Since the brushless DC motor operates in a self-controlled manner, it does not require an additional starting winding on the rotor like a synchronous motor under variable-frequency speed regulation during heavy-load starting, nor does it generate oscillations and loss of synchronization when the load changes suddenly. When a brushless motor is in use, it is generally equipped with a corresponding control circuit board to control the operation of the brushless motor.

[0003] Circuits are distributed on the control circuit board of the brushless motor, and the brushless motor is controlled through these circuits. The control circuit board is usually divided into a single-sided circuit board and a double-sided circuit board.

[0004] Currently, during the production or later maintenance and repair of the control circuit board, the circuit board needs to be tested. Generally, a corresponding testing instrument is used to test the control circuit board. During the testing process, in order to maintain the stability of the test, a fixing mechanism is generally used to fix the circuit board. However, since some fixing mechanisms have only a single fixing effect and cannot be flipped well, when facing the testing of a double-sided circuit board, it is necessary to repeat positioning and clamping, which is rather inconvenient. Therefore, we propose a testing device and a testing method for a brushless motor control circuit board. Summary of the Invention

[0005] The purpose of the present invention is to provide a testing device and a testing method for a brushless motor control circuit board. By setting a fixing mechanism, it is convenient to fix the circuit board by using a clamping mechanism, thus facilitating testing. Later, the clamping mechanism and the circuit board can be driven to flip by a flipping mechanism, so as to facilitate the testing of the double-sided circuit board.

[0006] To achieve the above object, the present invention provides the following technical solution: A testing device for a brushless motor control circuit board, including a detection table, on which a testing mechanism for testing the electrical variables of the circuit board is provided. The testing mechanism includes:

[0007] An electrical variable detector, which is placed on the detection table and is electrically connected to the power supply of the detection table;

[0008] Detection terminals, which are plugged into the electrical variable detector and are used to contact the detection part of the circuit board and transmit the electrical variable information of the circuit board to the electrical variable detector;

[0009] A display screen, which is fixedly connected to the top of the electrical variable detector, and the display screen is used to display the electrical variable information data of the circuit board;

[0010] A fixing mechanism, which is arranged on one side of the electrical variable detector, and the fixing mechanism is used to fix the circuit board. The fixing mechanism includes a clamping mechanism and a flipping mechanism connected to the clamping mechanism. The clamping mechanism is used to fix the circuit board, and the flipping mechanism is used to drive the clamping mechanism to rotate.

[0011] Preferably, the clamping mechanism includes:

[0012] A support base, which is connected to the outer surface of the test bench;

[0013] A fixing plate, which is arranged on one side of the support base. Two sliding rods are symmetrically and fixedly connected to one side of the fixing plate. One ends of the two sliding rods are fixedly connected with connecting blocks, and a telescopic component is fixedly connected between the two connecting blocks;

[0014] An extrusion threaded rod, the end of the telescopic component is threadedly connected with the extrusion threaded rod, one end of the extrusion threaded rod is rotatably connected with a clamping plate, and both ends of the clamping plate are inserted into the corresponding sliding rods;

[0015] A locking component, which is arranged in the middle of the telescopic component, and the locking component is used to lock the telescopic position of the telescopic component;

[0016] A driving component, which is arranged between the locking component and the extrusion threaded rod, and the driving component is used to drive the locking component or drive the extrusion threaded rod to move.

[0017] Preferably, the support base includes a horizontal plate and a vertical plate fixedly connected to the top of the horizontal plate;

[0018] The telescopic component includes a positioning sleeve fixedly connected to the end face of the connecting block and a moving sleeve slidably connected to the inside of the positioning sleeve.

[0019] Preferably, the locking component includes:

[0020] A moving block, moving blocks are inserted into both sides of the middle of the moving sleeve. One end of the moving block extending to the outside of the moving sleeve is fixedly connected with a locking plate, one end of the moving block extending to the inside of the moving sleeve is fixedly connected with a locking block, and inclined grooves are formed at both ends of the locking block;

[0021] A bracket, two brackets are symmetrically and fixedly connected to the inside of the moving sleeve, a double-headed threaded sleeve is rotatably connected between the two brackets, and trapezoidal blocks are threadedly connected to both ends of the double-headed threaded sleeve.

[0022] Preferably, the driving component includes:

[0023] A movable rod is inserted inside the double-headed threaded sleeve. One end of the movable rod extending outside the movable sleeve is fixedly connected with a connecting round block, and one end of the movable rod extending inside the movable sleeve is fixedly connected with a plug block;

[0024] An upper convex block, one end of the double-headed threaded sleeve is fixedly connected with an upper convex block. An upper slot is opened at one end of the upper convex block. One end of the extrusion threaded rod is fixedly connected with a lower convex block, and a lower slot is opened at one end of the lower convex block.

[0025] Preferably, the flipping mechanism includes:

[0026] A rotating shaft is rotatably connected to the middle of the support seat, and one end of the rotating shaft is fixedly connected to the middle of the fixed plate;

[0027] A turning handle assembly is fixedly connected to the other end of the rotating shaft;

[0028] A handle assembly, one end of the turning handle assembly is connected with a handle assembly, and the handle assembly cooperates with the turning handle assembly to drive the rotating shaft to rotate;

[0029] A clamping component is arranged on the turning handle assembly, and the clamping component is used to lock the rotation angle of the turning handle assembly.

[0030] Preferably, the turning handle assembly includes a rotating sleeve fixedly connected to the end face of the rotating shaft and a moving plate slidably connected inside the rotating sleeve. The handle assembly is arranged at one end of the moving plate.

[0031] Preferably, the clamping component includes:

[0032] A disc, one side of the support seat is fixedly connected with a disc. A plurality of card slots are evenly opened on the outer surface of the disc. The card slot is composed of a guiding slot opened on the side of the disc and a slot opening opened on one side of the guiding slot;

[0033] A connecting rod, one end of the moving plate is fixedly connected with a connecting rod. A clamping spring is sleeved on one end of the connecting rod extending outside the rotating sleeve. The other end of the moving plate is fixedly connected with a clamping block, and a rubber sleeve is fixedly connected to the outer surface of the clamping block.

[0034] Preferably, the handle assembly includes:

[0035] A fixed sleeve, one side of the end of the rotating sleeve is fixedly connected with a fixed sleeve, and one end of the fixed sleeve is fixedly connected with a connecting sleeve;

[0036] Slider, one side of the moving plate is fixedly connected with a slider, one side of the rotating sleeve is provided with a sliding groove for the slider to slide, one side of the slider is fixedly connected with a pressure-receiving block, and one side of the fixed sleeve is provided with a through groove for the pressure-receiving block to pass through. One end of the connecting sleeve close to the fixed sleeve is threadedly connected with a pressing sleeve;

[0037] Extrusion rod, an extrusion rod is inserted into the connecting sleeve. An extrusion ring is fixedly connected to the outer side of the extrusion rod. A return spring is sleeved on the outer surface of the extrusion rod. One end of the extrusion rod extending into the fixed sleeve is fixedly connected with an extrusion block, and one end of the extrusion rod extending outside the connecting sleeve is fixedly connected with a fixed round block.

[0038] Second, the present invention provides a test method for the test device of the brushless motor control circuit board. The specific steps of the test method are as follows:

[0039] Step 1: Place the circuit board between the clamping plate and the fixing plate, and then move the moving sleeve along the positioning sleeve until both the clamping plate and the fixing plate are in close contact with the circuit board. Subsequently, lock the position of the moving sleeve through the locking component, and then further drive the clamping plate to move through the extrusion screw rod so that the clamping plate fixes the circuit board:

[0040] Step 2: Insert the detection terminal into the corresponding interface of the electrical variable detector, and then contact the detection terminal with the circuit board, so as to transmit the electrical variable data generated by the contact of the circuit board via the detection terminal to the electrical variable detector and display it via the display screen, so as to facilitate the electrical variable test of the circuit board. The electrical variable detector is detected based on the detection system. The detection system includes an information collection module, a processing and conversion module, and a display module. The information collection module is used to collect the circuit board detection parameter information. The processing and conversion module is used to process the parameter information and perform conversion. The converted parameter information is displayed on the display module. The detection system is detected based on the current-voltage measurement and conversion algorithm. The processing and conversion module processes the parameter information collected by the information collection module based on the correction model. The specific content of the correction model is as follows:

[0041] The current information is collected multiple times by the processing information collection module. It is set to collect the current information five times. At this time, the five current information data are respectively recorded as A, B, C, D, and E. Subsequently, the magnitudes of the five current information data are compared to obtain the data with the largest value and the data with the smallest value. Here, it is assumed that A is the largest and B is the smallest. Substitute A into the weakening correction formula to obtain the data RA. The calculation formula for RA is: RA = A * X, where the value range of X is 0.5 to 0.8. Substitute B into the strengthening correction formula to obtain the data QB. The calculation formula for QB is: QB = B * Y, where the value range of Y is 1.2 to 1.5. Finally, substitute RA, QB, C, D, and E into the averaging formula to obtain the result S. The calculation formula for S is: S = (RA + QB + C + D + E) / 5. Then display S on the display module to judge the detection result accordingly;

[0042] Step 3: Drive the rotary handle assembly to rotate through the handle assembly, thereby rotating the clamping mechanism and its circuit board to detect the other side of the circuit board. Then temporarily fix the angle of the flipping mechanism using the clamping component, and further stably lock the angle of the flipping mechanism through the handle assembly.

[0043] The technical effects and advantages of the present invention:

[0044] (1) The circuit board is preliminarily fixed by the clamping mechanism. At this time, insert the interface where the detection terminal is docked with the electrical variable detector, and then bring the detection terminal into contact with the part of the circuit board that needs to be detected. The electrical variables generated when the detection terminal contacts the circuit board are transmitted to the electrical variable detector for processing, and the test results are displayed on the display screen. When one side of the double-sided circuit board is detected, the flipping mechanism can drive the clamping mechanism and its circuit board to rotate, facilitating the detection of the other side of the circuit board;

[0045] (2) The clamping plate is driven by the telescopic component to closely adhere to the circuit board. Subsequently, the locking component is driven to move by the driving component to lock the telescopic position of the telescopic component. Then separate the driving component from the locking component and connect the driving component to the extrusion threaded rod to drive the extrusion threaded rod to rotate, thereby fixing the circuit board using the fixing plate and the clamping plate. The telescopic component and the locking component are used in cooperation for pre-clamping, and then stable clamping is achieved through the extrusion threaded rod. When clamping circuit boards of different sizes, compared with the traditional single threaded rod driving method, this method has a faster clamping speed and is also convenient for operation;

[0046] (3) It is connected by the connecting sleeve thread. At the same time, since one end of the pressure block is still outside the through groove, the extrusion sleeve will squeeze the side of the pressure block, so that the clamping block and the clamping groove are stably clamped. At the same time, the moving plate will also squeeze the rubber protrusions on both sides, so that the moving plate, so that after the rotating shaft is fixed, it will not easily deflect, avoiding the instability of the clamping assembly during the test, so as to facilitate the circuit board test. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0048] Figure 2 of the present invention Figure 1 is a schematic diagram of the enlarged partial structure at A in the present invention;

[0049] Figure 3 is a schematic diagram of the structure of the fixing mechanism of the present invention;

[0050] Figure 4 of the present invention Figure 3 is a schematic diagram of the enlarged partial structure at B in the present invention;

[0051] Figure 5 of the present invention Figure 4 is a schematic diagram of the enlarged partial structure at C in the present invention;

[0052] Figure 6 of the present invention Figure 3 is a schematic diagram of the enlarged partial structure at D in the present invention;

[0053] Figure 7 is a schematic diagram of the plug block structure of the present invention;

[0054] Figure 8 is a schematic diagram of the partial structure of one-third of the disc of the present invention;

[0055] Figure 9 is a schematic diagram of the connection structure between the rotating sleeve and the moving plate of the present invention.

[0056] In the figure: 1. Detection table; 2. Electric variable detector; 3. Detection terminal; 4. Display screen; 5. Support base, 501. Horizontal plate; 502. Vertical plate; 6. Twist grip assembly, 601. Rotating sleeve; 602. Moving plate; 7. Clamping assembly, 701. Disc; 702. Card slot, 7021. Guide slot; 7022. Notch; 703. Connecting rod; 704. Clamping spring; 705. Clamping block; 706. Rubber sleeve; 8. Handle assembly, 801. Fixed sleeve; 802. Connecting sleeve; 803. Slide groove; 804. Slide block; 805. Compressed block; 806. Extrusion rod; 807. Extrusion ring; 808. Return spring; 809. Extrusion block; 810. Fixed round block; 811. Extrusion sleeve; 812. Through groove; 9. Fixed plate; 10. Slide rod; 11. Connecting block; 12. Clamping plate; 13. Telescopic assembly, 1301. Positioning sleeve; 1302. Moving sleeve; 14. Locking assembly, 1401. Moving block; 1402. Locking plate; 1403. Locking block; 1404. Inclined groove; 1405. Bracket; 1406. Double-headed threaded sleeve; 1407. Trapezoidal block; 15. Extrusion threaded rod; 16. Driving assembly, 1601. Moving rod; 1602. Connecting round block; 1603. Insert block; 1604. Upper convex block; 1605. Upper slot; 1606. Lower convex block; 1607. Lower slot; 17. Rotating shaft. Detailed implementation manner

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0058] The present invention provides a test device for a brushless motor control circuit board as shown in Figures 1-9 Figure

[0059] Embodiment 1

[0060] It includes a detection table 1, on which a test mechanism for testing the electrical variables of a circuit board is provided. The test mechanism includes: an electrical variable detector 2, which is placed on the detection table 1 and is electrically connected to the power supply of the detection table 1; a detection terminal 3, which is plugged into the electrical variable detector 2 and is used to contact the detection part of the circuit board and transmit the electrical variable information of the circuit board to the electrical variable detector 2; a display screen 4, which is fixedly connected to the top of the electrical variable detector 2 and is used to display the electrical variable information data of the circuit board; a fixing mechanism, which is arranged on one side of the electrical variable detector 2 and is used to fix the circuit board. The fixing mechanism includes a clamping mechanism and a flipping mechanism connected to the clamping mechanism. The clamping mechanism is used to fix the circuit board, and the flipping mechanism is used to drive the clamping mechanism to rotate; the circuit board is fixed in advance by the clamping mechanism. At this time, the interface where the detection terminal 3 is docked with the electrical variable detector 2 is plugged, and then the detection terminal 3 is contacted with the part of the circuit board that needs to be detected. The electrical variables generated when the detection terminal 3 contacts the circuit board are transmitted to the electrical variable detector 2 for processing, and the test results are displayed on the display screen 4. When one side of the double-sided circuit board is detected, the flipping mechanism can drive the clamping mechanism and the circuit board to rotate, so as to facilitate the testing of the other side of the circuit board.

[0061] Embodiment 2

[0062] Embodiment 2 further discloses a clamping mechanism on the basis of Embodiment 1. The clamping mechanism includes: a support base 5, and the support base 5 is connected to the outer surface of the detection table 1; a fixing plate 9, the fixing plate 9 is arranged on one side of the support base 5, and two sliding rods 10 are symmetrically and fixedly connected to one side of the fixing plate 9. One ends of the two sliding rods 10 are fixedly connected with connecting blocks 11, and a telescopic assembly 13 is fixedly connected between the two connecting blocks 11; an extrusion threaded rod 15, the end of the telescopic assembly 13 is threadedly connected with the extrusion threaded rod 15, one end of the extrusion threaded rod 15 is rotatably connected with a clamping plate 12, and both ends of the clamping plate 12 are inserted into the corresponding sliding rods 10; a locking assembly 14, the locking assembly 14 is arranged in the middle of the telescopic assembly 13, and the locking assembly 14 is used to lock the telescopic position of the telescopic assembly 13; a driving assembly 16, a driving assembly 16 is arranged between the locking assembly 14 and the extrusion threaded rod 15, and the driving assembly 16 is used to drive the locking assembly 14 or drive the extrusion threaded rod 15 to move; by placing the circuit board between the fixing plate 9 and the clamping plate 12, then using the telescopic assembly 13 to expand and contract, so that the clamping plate 12 is close to the circuit board, then connecting the driving assembly 16 with the locking assembly 14, driving the locking assembly 14 to move through the driving assembly 16, thereby locking the telescopic position of the telescopic assembly 13, then separating the driving assembly 16 from the locking assembly 14, connecting the driving assembly 16 with the extrusion threaded rod 15, thereby driving the extrusion threaded rod 15 to rotate, and further enabling the clamping plate 12 to press the circuit board, so as to fix the circuit board by using the fixing plate 9 and the clamping plate 12. At the same time, rubber pads are fixedly connected to the outer surfaces of the clamping plate 12 and the fixing plate 9, so as to avoid damaging the circuit board.

[0063] Further, the support base 5 includes a horizontal plate 501 and a vertical plate 502 fixedly connected to the top of the horizontal plate 501; the telescopic assembly 13 includes a positioning sleeve 1301 fixedly connected to the end face of the connecting block 11 and a moving sleeve 1302 slidably connected to the inside of the positioning sleeve 1301; by sliding the moving sleeve 1302 along the inside of the positioning sleeve 1301, the clamping plate 12 is driven to move, and the extrusion threaded rod 15 is threadedly connected to the end of the moving sleeve 1302.

[0064] Further, the locking component 14 includes: a moving block 1401, the moving blocks 1401 are inserted on both sides of the middle of the moving sleeve 1302, one end of the moving block 1401 extending to the outside of the moving sleeve 1302 is fixedly connected with a locking plate 1402, one end of the moving block 1401 extending to the inside of the moving sleeve 1302 is fixedly connected with a locking block 1403, and inclined slots 1404 are formed at both ends of the locking block 1403; a bracket 1405, two brackets 1405 are symmetrically and fixedly connected inside the moving sleeve 1302, and a double-headed threaded sleeve 1406 is rotatably connected between the two brackets 1405, and trapezoidal blocks 1407 are threadedly connected to both ends of the double-headed threaded sleeve 1406; when the moving sleeve 1302 moves along the positioning sleeve 1301 and the clamping plate 12 is closely attached to the circuit board, the driving component 16 can be connected to the locking component 14. At this time, by rotating the driving component 16, the double-headed threaded sleeve 1406 is driven to rotate. The double-headed threaded sleeve 1406 drives the two trapezoidal blocks 1407 to approach each other, thereby squeezing the inclined slots 1404, so that the locking block 1403 drives the moving block 1401 to move outwards, so that the locking plate 1402 squeezes the inner wall surface of the positioning sleeve 1301, thereby locking the position of the moving sleeve 1302 by using the locking component 14. When it is necessary to change the position of the moving sleeve 1302 again later, by reversing the driving component 16, the trapezoidal block 1407 no longer squeezes the inner wall surface of the inclined slot 1404.

[0065] Further, the driving component 16 includes: a movable rod 1601, the movable rod 1601 is inserted into the double-headed threaded sleeve 1406, one end of the movable rod 1601 extending to the outside of the moving sleeve 1302 is fixedly connected with a connecting round block 1602, and one end of the movable rod 1601 extending to the inside of the moving sleeve 1302 is fixedly connected with a plug block 1603; an upper convex block 1604, one end of the double-headed threaded sleeve 1406 is fixedly connected with an upper convex block 1604, an upper slot 1605 is formed at one end of the upper convex block 1604, one end of the extrusion threaded rod 15 is fixedly connected with a lower convex block 1606, and a lower slot 1607 is formed at one end of the lower convex block 1606; by moving the connecting round block 1602 outwards, the movable rod 1601 moves along the inside of the double-headed threaded sleeve 1406 until the plug block 1603 is inserted into the upper slot 1605. At this time, by rotating the connecting round block 1602, the double-headed threaded sleeve 1406 can be rotated by the mutual limitation between the plug block 1603 and the upper slot 1605. Later, by moving the connecting round block 1602 inwards, the plug block 1603 is separated from the upper slot 1605, and the plug block 1603 is inserted into the lower slot 1607, and then by rotating the connecting round block 1602, the extrusion threaded rod 15 can be rotated, thereby driving the clamping plate 12 to move. The inner contour of the upper slot 1605 and the inner contour of the lower slot 1607 are adapted to the outer contour of the plug block 1603.

[0066] Embodiment 3

[0067] Embodiment 3 further discloses a flipping mechanism on the basis of Embodiment 2. The flipping mechanism includes: a rotating shaft 17, the rotating shaft 17 is rotatably connected to the middle of the support base 5, and one end of the rotating shaft 17 is fixedly connected to the middle of the fixing plate 9; a handle assembly 6, the handle assembly 6 is fixedly connected to the other end of the rotating shaft 17; a handle component 8, one end of the handle assembly 6 is connected to the handle component 8, and the handle component 8 cooperates with the handle assembly 6 to drive the rotating shaft 17 to rotate; a clamping component 7, the clamping component 7 is arranged on the handle assembly 6, and the clamping component 7 is used to lock the rotation angle of the handle assembly 6; by driving the handle assembly 6 and its rotating shaft 17 to rotate through the handle component 8, thereby driving the clamping mechanism and its circuit board to rotate. After adjustment, the rotation angle of the handle assembly 6 can be temporarily fixed by using the clamping component 7, and then further locked by using the handle component 8, so that the clamping mechanism will not easily deflect.

[0068] Furthermore, the handle assembly 6 includes a rotating sleeve 601 fixedly connected to the end face of the rotating shaft 17 and a moving plate 602 slidably connected to the inside of the rotating sleeve 601, and the handle component 8 is arranged at one end of the moving plate 602; the clamping component 7 includes: a disc 701, one side of the support base 5 is fixedly connected to the disc 701, a plurality of clamping grooves 702 are uniformly formed on the outer surface of the disc 701, and the clamping grooves 702 are composed of a guiding groove 7021 formed on the side of the disc 701 and a notch 7022 formed on one side of the guiding groove 7021; a connecting rod 703, one end of the moving plate 602 is fixedly connected to the connecting rod 703, a clamping spring 704 is sleeved on the outer end of the connecting rod 703 extending to the outside of the rotating sleeve 601, and a clamping block 705 is fixedly connected to the other end of the moving plate 602, and a rubber sleeve 706 is fixedly connected to the outer surface of the clamping block 705; by sliding the moving plate 602 along the inside of the rotating sleeve 601, the connecting rod 703 is pressed against the clamping spring 704 until the clamping block 705 is separated from the clamping groove 702. At this time, the rotating shaft 17 can be driven to rotate by using the handle component 8. Later, the connecting rod 703 is driven to reset by the clamping spring 704, so that the clamping block 705 moves along the guiding groove 7021 and is thus clamped into the notch 7022, thereby temporarily fixing the rotating shaft 17.

[0069] Further, the handle assembly 8 includes: a fixed sleeve 801, one side of the end of the rotating sleeve 601 is fixedly connected to the fixed sleeve 801, and one end of the fixed sleeve 801 is fixedly connected to a connecting sleeve 802; a slider 804, one side of the moving plate 602 is fixedly connected to the slider 804, a sliding groove 803 for the slider 804 to slide is formed on one side of the rotating sleeve 601, one side of the slider 804 is fixedly connected to a pressure receiving block 805, a through groove 812 for the pressure receiving block 805 to pass through is formed on one side of the fixed sleeve 801, and an extrusion sleeve 811 is threadedly connected to the end of the connecting sleeve 802 close to the fixed sleeve 801; an extrusion rod 806, the extrusion rod 806 is inserted into the connecting sleeve 802, an extrusion ring 807 is fixedly connected to the outer side of the extrusion rod 806, a return spring 808 is sleeved on the outer surface of the extrusion rod 806, one end of the extrusion rod 806 extending into the fixed sleeve 801 is fixedly connected to an extrusion block 809, and one end of the extrusion rod 806 extending outside the connecting sleeve 802 is fixedly connected to a fixed round block 810; by rotating the extrusion sleeve 811, the extrusion sleeve 811 is no longer threadedly connected to the connecting sleeve 802, and then hold the extrusion sleeve 811 by hand, and press the fixed round block 810 with the thumb, so that the fixed round block 810 drives the extrusion rod 806 to move, so that the extrusion ring 807 squeezes the return spring 808, the extrusion block 809 will squeeze the pressure receiving block 805, so that the pressure receiving block 805 gradually moves out of the through groove 812, the pressure receiving block 805 drives the slider 804 to slide along the sliding groove 803, thereby driving the moving plate 602 to move by using the pressure receiving block 805, so that the clamping block 705 is separated from the clamping groove 702. At this time, the extrusion sleeve 811 can be rotated, so that the extrusion sleeve 811 drives the fixed sleeve 801 and its handle assembly 6 to rotate, thereby driving the rotating shaft 17 to rotate. When the adjustment is completed, release the fixed round block 810, and the return spring 808 drives the extrusion ring 807 and its extrusion rod 806 to reset, so that the extrusion block 809 no longer squeezes the pressure receiving block 805. At this time, the clamping spring 704 drives the moving plate 602 to reset, so that the clamping block 705 is clamped with the corresponding clamping groove 702. Then move the extrusion sleeve 811 inward, and make the extrusion sleeve 811 rotate by itself and be threadedly connected to the connecting sleeve 802. At the same time, since one end of the pressure receiving block 805 is still outside the through groove 812, the extrusion sleeve 811 will squeeze the side of the pressure receiving block 805, so that the clamping block 705 continuously clings to the inside of the clamping groove 702, so that the rubber sleeve 706 clings to the clamping groove 702, so as to be stably clamped with the clamping groove 702. At the same time, the moving plate 602 will also squeeze the rubber protrusions on both sides, so that after the rotating shaft 17 is fixed, it will not easily deflect, which is convenient for circuit board testing and can realize multi-angle adjustment and rotation. For example, the circuit board can be in an inclined state, which is convenient for detection. At the same time, the overall structure is relatively compact and will not interfere with the hand detection operation.

[0070] A test method for a test device of a brushless motor control circuit board. The specific steps of the test method are as follows:

[0071] Step 1: Place the circuit board between the clamping plate 12 and the fixing plate 9, then move the moving sleeve 1302 along the positioning sleeve 1301 until both the clamping plate 12 and the fixing plate 9 are in close contact with the circuit board. Subsequently, lock the position of the moving sleeve 1302 through the locking assembly 14, and then further drive the clamping plate 12 to move through the extrusion screw rod 15, so that the clamping plate 12 fixes the circuit board:

[0072] Step 2: Insert the detection terminal 3 into the corresponding interface of the electrical variable detector 2, and then bring the detection terminal 3 into contact with the circuit board, so as to transmit the electrical variable data generated by the contact of the circuit board via the detection terminal 3 to the electrical variable detector 2 and display it via the display screen 4, thereby facilitating the electrical variable test of the circuit board. The electrical variable detector 2 performs detection based on the detection system. The detection system includes an information collection module, a processing and conversion module, and a display module. The information collection module is used to collect the circuit board detection parameter information. The processing and conversion module is used to process the parameter information and perform conversion. The converted parameter information is displayed on the display module. The detection system performs detection based on the current-voltage measurement and conversion algorithm. The processing and conversion module processes the parameter information collected by the information collection module based on the correction model. The specific content of the correction model is as follows:

[0073] Collect the current information multiple times through the processing information collection module. It is set to collect the current information five times. At this time, the five current information data are respectively recorded as A, B, C, D, and E. Subsequently, compare the magnitudes of the five current information data to obtain the data with the largest value and the data with the smallest value. Here, it is assumed that A is the largest and B is the smallest. Substitute A into the weakening correction formula to obtain the weakening correction data RA. The calculation formula of RA is: RA = A * X, where the value range of X is 0.5 - 0.8. Substitute B into the strengthening correction formula to obtain the strengthening correction data QB. The calculation formula of QB is: QB = B * Y, where the value range of Y is 1.2 - 1.5. Finally, substitute RA, QB, C, D, and E into the averaging formula to obtain the averaged data S. The calculation formula of S is: S = (RA + QB + C + D + E) / 5, and then display the averaged data S on the display module to judge the detection result accordingly. By setting the correction model, it can effectively avoid the situation of misjudgment caused by unstable test voltage or current, resulting in unstable or abnormal test data of the circuit board.

[0074] The specific content of the current-voltage measurement and conversion algorithm is:

[0075] Given the resistance value, calculate the voltage through the current (according to Ohm's law V = I × R),

[0076] # Define the resistance value (unit: ohm)

[0077] resistance = 100

[0078] # Define the current value obtained from analog measurement (unit: ampere)

[0079] measured_current = 0.05

[0080] # Perform the current-to-voltage conversion according to Ohm's law

[0081] measured_voltage = measured_current * resistance

[0082] print(f"The measured current value is: {measured_current} amperes")

[0083] print(f"The calculated voltage value is: {measured_voltage} volts");

[0084] Step 3: Drive the throttle assembly 6 to rotate through the handle assembly 8, thereby rotating the clamping mechanism and its circuit board, so as to detect the other side of the circuit board. Then, temporarily fix the angle of the flipping mechanism by means of the clamping assembly 7, and then further stably lock the angle of the flipping mechanism through the handle assembly 8.

[0085] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A test device for a brushless motor control circuit board, comprising a test bench (1), characterized in that: The testing platform (1) is provided with a testing mechanism for testing the electrical variables of the circuit board, and the testing mechanism comprises: An electric variable detector (2), the electric variable detector (2) being placed on the detection platform (1), and the electric variable detector (2) being electrically connected to a power supply of the detection platform (1); A detection terminal (3), the detection terminal (3) being plugged into the electric variable detector (2), and the detection terminal (3) being used to contact a detection portion of the circuit board and transmit the circuit board electric variable information to the electric variable detector (2); A display screen (4), wherein the display screen (4) is fixedly connected to the top of the electric variable detector (2), and the display screen (4) is used to display the electric variable information data of the circuit board; A fixing mechanism is arranged on one side of the electric variable detector (2) and is used to fix the circuit board. The fixing mechanism comprises a clamping mechanism and a flipping mechanism connected to the clamping mechanism. The clamping mechanism is used to fix the circuit board, and the flipping mechanism is used to drive the clamping mechanism to rotate.

2. A brushless motor control circuit board testing device according to claim 1, characterized in that: The clamping mechanism comprises: A support base (5), wherein the support base (5) is connected to the outer surface of the detection platform (1); A fixed plate (9), the fixed plate (9) being arranged on one side of the support seat (5), two sliding rods (10) being symmetrically fixedly connected to one side of the fixed plate (9), one end of each of the two sliding rods (10) being fixedly connected to a connecting block (11), and a telescopic assembly (13) being fixedly connected between the two connecting blocks (11); An extruded threaded rod (15), the end of the telescopic assembly (13) is threadedly connected to the extruded threaded rod (15), one end of the extruded threaded rod (15) is rotatably connected to a clamping plate (12), and both ends of the clamping plate (12) are respectively plugged into corresponding sliding rods (10); A locking component (14), wherein the locking component (14) is disposed in the middle of the telescopic component (13), and the locking component (14) is used to lock the telescopic position of the telescopic component (13); A driving assembly (16) is provided between the locking assembly (14) and the extruded threaded rod (15), and the driving assembly (16) is used to drive the locking assembly (14) or the extruded threaded rod (15) to move.

3. A brushless motor control circuit board testing device according to claim 2, characterized in that: The support seat (5) comprises a horizontal plate (501) and a vertical plate (502) fixedly connected to the top of the horizontal plate (501); The telescopic assembly (13) comprises a positioning sleeve (1301) fixedly connected to the end surface of the connection block (11) and a movable sleeve (1302) slidably connected to the inside of the positioning sleeve (1301).

4. A brushless motor control circuit board testing device according to claim 3, characterized in that: The locking assembly (14) comprises: A moving block (1401), both sides of the middle of the moving sleeve (1302) are plugged with moving blocks (1401), one end of the moving block (1401) extending to the outside of the moving sleeve (1302) is fixedly connected to a locking plate (1402), one end of the moving block (1401) extending to the inside of the moving sleeve (1302) is fixedly connected to a locking block (1403), and both ends of the locking block (1403) are provided with inclined grooves (1404); The movable sleeve (1302) is symmetrically and fixedly connected with two brackets (1405) inside, and a double-threaded sleeve (1406) is rotatably connected between the two brackets (1405), and both ends of the double-threaded sleeve (1406) are threadedly connected with a trapezoidal block (1407).

5. A brushless motor control circuit board testing device according to claim 4, characterized in that: The drive assembly (16) comprises: A movable rod (1601), the inside of the double-threaded sleeve (1406) is plugged with the movable rod (1601), one end of the movable rod (1601) extending to the outside of the movable sleeve (1302) is fixedly connected to a connecting round block (1602), and one end of the movable rod (1601) extending to the inside of the movable sleeve (1302) is fixedly connected to an insert block (1603); An upper protrusion (1604), one end of the double-headed threaded sleeve (1406) is fixedly connected to the upper protrusion (1604), one end of the upper protrusion (1604) is provided with an upper slot (1605), one end of the extruded threaded rod (15) is fixedly connected to the lower protrusion (1606), and one end of the lower protrusion (1606) is provided with a lower slot (1607).

6. A brushless motor control circuit board testing device according to claim 5, characterized in that: The flip mechanism includes: A rotating shaft (17), wherein the rotating shaft (17) is rotatably connected to the middle portion of the support seat (5), and one end of the rotating shaft (17) is fixedly connected to the middle portion of the fixing plate (9); A handlebar assembly (6), wherein the handlebar assembly (6) is fixedly connected to the other end of the rotating shaft (17); A handle assembly (8), one end of the handle assembly (6) is connected to the handle assembly (8), and the handle assembly (8) cooperates with the handle assembly (6) to drive the rotating shaft (17) to rotate; A clamping assembly (7), wherein the clamping assembly (7) is arranged on the throttle assembly (6), and the clamping assembly (7) is used to lock the rotation angle of the throttle assembly (6).

7. A brushless motor control circuit board testing device according to claim 6, characterized in that: The turning handle assembly (6) comprises a rotating sleeve (601) fixedly connected to the end surface of the rotating shaft (17) and a moving plate (602) slidably connected to the inside of the rotating sleeve (601), and the handle assembly (8) is arranged at one end of the moving plate (602).

8. The brushless motor control circuit board testing device according to claim 7, characterized in that: The clamping assembly (7) comprises: A disc (701), one side of the support seat (5) is fixedly connected with the disc (701), the outer surface of the disc (701) is evenly provided with a plurality of slots (702), and the slots (702) are composed of a guide groove (7021) provided on the side of the disc (701) and a notch (7022) provided on one side of the guide groove (7021); A connecting rod (703), one end of the movable plate (602) is fixedly connected to the connecting rod (703), one end of the connecting rod (703) extending to the outside of the rotating sleeve (601) is sleeved with a clamping spring (704), the other end of the movable plate (602) is fixedly connected to a clamping block (705), and the outer surface of the clamping block (705) is fixedly connected to a rubber sleeve (706).

9. A brushless motor control circuit board testing device according to claim 8, characterized in that: The handle assembly (8) comprises: A fixed sleeve (801), one side of the end of the rotating sleeve (601) is fixedly connected to the fixed sleeve (801), and one end of the fixed sleeve (801) is fixedly connected to the connecting sleeve (802); A slider (804), one side of the movable plate (602) is fixedly connected with the slider (804), one side of the rotating sleeve (601) is provided with a sliding groove (803) for the slider (804) to slide, one side of the slider (804) is fixedly connected with a pressure block (805), one side of the fixed sleeve (801) is provided with a through groove (812) for the pressure block (805) to pass through, and the end of the connecting sleeve (802) close to the fixed sleeve (801) is threadedly connected with an extrusion sleeve (811); An extrusion rod (806), the connecting sleeve (802) is plugged with the extrusion rod (806), the outer side of the extrusion rod (806) is fixedly connected with an extrusion ring (807), the outer surface of the extrusion rod (806) is sleeved with a return spring (808), the extrusion rod (806) extends to the inside of the fixed sleeve (801) and is fixedly connected with an extrusion block (809), and the extrusion rod (806) extends to the outside of the connecting sleeve (802) and is fixedly connected with a fixed round block (810).

10. The testing method of a brushless motor control circuit board testing device according to any one of claims 1 to 9, characterized in that: The specific steps of the test method are as follows: Step 1: Place the circuit board between the clamping plate (12) and the fixed plate (9), and then move the movable sleeve (1302) along the positioning sleeve (1301) until the clamping plate (12) and the fixed plate (9) are both in close contact with the circuit board, then lock the position of the movable sleeve (1302) by the locking assembly (14), and then further drive the clamping plate (12) to move by squeezing the threaded rod (15), so that the clamping plate (12) fixes the circuit board: Step 2: inserting the detection terminal (3) into the corresponding interface of the electric variable detector (2), and then contacting the detection terminal (3) with the circuit board, so as to transmit the electric variable data generated by the circuit board through the contact of the detection terminal (3) to the electric variable detector (2), and displaying it through the display screen (4), so as to facilitate the electric variable test of the circuit board. The electric variable detector (2) performs detection based on the detection system. The detection system includes an information collection module, a processing conversion module and a display module. The information collection module is used to collect circuit board detection parameter information. The processing conversion module is used to process the parameter information and convert it. The converted parameter information is displayed on the display module. The detection system performs detection based on current and voltage measurement and conversion algorithm. The processing conversion module processes the parameter information collected by the information collection module based on the correction model. The specific content of the correction model is as follows: The current information is collected multiple times through the processing information collection module, and it is set to collect the current information five times. At this time, the five current information data are recorded as A, B, C, D, and E respectively. Then the five current information data are compared to obtain the data with the largest value and the data with the smallest value. Here, it is assumed that A is the largest and B is the smallest. Substitute A into the weakening correction formula to obtain the data RA. The calculation formula of RA is: RA=A*X, and the value range of X is 0.5~0.

8. Substitute B into the strengthening correction formula to obtain the data QB. The calculation formula of QB is: QB=B*Y, and the value range of Y is 1.2~1.

5. Finally, RA, QB, C, D, and E are substituted into the equalization formula to obtain the result S. The calculation formula of S is: S=(RA+QB+C+D+E) / 5, and then S is displayed on the display module to judge the detection result; Step 3: The handle assembly (8) drives the turning handle assembly (6) to rotate, thereby rotating the clamping mechanism and its circuit board, so as to detect the other side of the circuit board, and then temporarily fix the angle of the flipping mechanism using the clamping assembly (7), and then further stabilize and lock the angle of the flipping mechanism using the handle assembly (8).

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