Automatic motor tester for measuring speed and judging direction by using FG and Hall signals
By designing an automatic motor tester that combines FG and Hall signal speed measurement to determine direction, the problems of high cost, difficult operation, and poor portability of brushless motor testing equipment have been solved. It enables accurate testing of motor function and direction, especially testing of motor stall function, thus improving testing efficiency and portability.
Patent Information
- Application Number
- CN202520225490.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-02-12
AI Technical Summary
Existing brushless motor testing equipment is costly, difficult to operate, has fixed functions and low flexibility, and cannot be portable or accurately test the motor's direction of rotation. It cannot effectively solve the problem of testing the motor's stall function, and the testing equipment has poor portability.
An automatic motor tester that combines FG and Hall signal speed measurement to determine direction is designed. It includes a wiring box, test components and various fixing structures. It is connected to the motor through a controller, uses Hall signals to determine the motor's direction of rotation, and performs motor stall function testing through a stall head.
It improves the applicability and testing efficiency of motor testing, enables accurate testing of motor function and direction, especially the testing of motor stall function, reduces equipment cost and improves portability.
Smart Images
Figure CN223624382U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of brushless motor testing technology, and in particular to an automatic motor tester that uses both FG and Hall signals to measure speed and determine direction. Background Technology
[0002] Sensing square wave driven brushless motors, with their simple control and low cost, occupy a place in applications where control precision requirements are not high and cost considerations are dominant. They are widely used in industrial robots, CNC machine tools, and various automated machinery. After the brushless motor is manufactured, its function needs to be tested. Therefore, an automatic motor tester that combines FG and Hall signal speed measurement to determine direction is needed to test the brushless motor.
[0003] Existing brushless motor testing typically uses traditional brushless motor testers with a host computer interface, controlled by pre-prepared code or accompanying software. However, this method is costly, difficult to debug, has fixed functions and low flexibility, and requires a different test bench if the test model is changed. For speed testing, the FG signal output by the motor is used, but the direction of rotation cannot be determined solely by the FG signal, often requiring personnel to visually determine the motor's rotation direction. Furthermore, it cannot test the motor's stall function, and the testing equipment has poor portability. Utility Model Content
[0004] To address the aforementioned issues, this invention proposes an automatic motor tester that combines FG and Hall signal speed measurement for direction determination, thereby more accurately resolving the problems of poor applicability and portability of the aforementioned testers.
[0005] This utility model is achieved through the following technical solution:
[0006] This utility model proposes an automatic motor tester that uses both FG and Hall signals to measure speed and determine direction. It includes a wiring box with a hollow interior and detachable side panels. A test component is installed on top of the wiring box, which can test the performance of the brushless motor.
[0007] Furthermore, the cable tray has through holes on its side wall and top, and a sturdy frame plate is bolted to the top of the cable tray.
[0008] Furthermore, the stabilizing plate is made of acrylic sheet, the cross-section of the stabilizing plate is L-shaped, and the stabilizing plate is located above the wire hole.
[0009] Furthermore, the test assembly includes a controller, a test bench, a mounting frame, a mounting base, a fixing component, a pressing handle, and a connecting component. The controller is mounted on the side wall of the stable frame plate, the test bench is bolted to the top of the cable tray, the mounting frame is bolted to the top of the cable tray, the mounting base is bolted to the side wall of the mounting frame, the fixing component is bolted to the side wall of the mounting base, the pressing handle is rotatably mounted on the side wall of the fixing component, and the connecting component is rotatably sleeved on the outside of the pressing handle.
[0010] Furthermore, the controller includes a chip, control buttons, a display screen, and a wiring port. The connector has an H-shaped cross-section, the pressing handle is inclined, and the pressing handle is covered with an anti-slip sleeve.
[0011] Furthermore, the test platform has grooves on its surface, a cover plate is rotatably mounted on the top of the test platform, and a damping structure is provided between the cover plate and the test platform.
[0012] Furthermore, the test assembly also includes a pressure rod, a connecting plate, a limiting seat, a slider, a vertical rod, a buffer spring, and a stopper. The pressure rod is rotatably mounted at the end of the connecting piece, the connecting plate is mounted at the bottom end of the pressure rod, the limiting seat is bolted to the side wall of the fixed frame, the slider is slidably mounted outside the limiting seat, the vertical rod is inserted into the connecting plate, the buffer spring is mounted outside the vertical rod, and the stopper is mounted at the bottom end of the vertical rod.
[0013] Furthermore, the pressure rod is slidably disposed with the fixing member, the slider is fixedly connected to the connecting plate, and the buffer spring is located between the connecting plate and the stop head.
[0014] The beneficial effects of this utility model are:
[0015] This utility model proposes an automatic motor tester that combines FG and Hall signal speed measurement for direction determination. With test components, including a test platform, groove, and cover plate, the motor can be limited and fixed. The controller is connected to the power supply and the motor under test according to their respective function lines and powered on. Pressing the corresponding control button allows for testing and acquisition of the motor's PWM enable, FR commutation, BK braking, FG function, and direction of rotation, improving the tester's applicability and testing efficiency. With the combination of a handle, connector, fixing component, pressure rod, connecting plate, limit seat, slider, vertical rod, and stall head, the motor's stall function can be tested. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the wiring box and test bench structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the test component structure of this utility model;
[0019] Figure 4 This is a cross-sectional view of the blocking head of this utility model.
[0020] The attached figures are labeled as follows:
[0021] In the diagram: 1. Cable management box; 2. Cable threading hole; 3. Stabilizing bracket; 4. Controller; 5. Test bench; 6. Groove; 7. Cover plate; 8. Fixing bracket; 9. Fixing base; 10. Fixing component; 11. Press handle; 12. Connecting component; 13. Pressure rod; 14. Connecting plate; 15. Limiting seat; 16. Sliding block; 17. Vertical rod; 18. Buffer spring; 19. Stopper head. Detailed Implementation
[0022] To more clearly and completely illustrate the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, will further explain this utility model.
[0023] Please refer to Figures 1-4 This utility model proposes an automatic motor tester that combines FG and Hall signal speed measurement for direction determination. It includes a wiring box 1, which is hollow inside. The side panels of the wiring box 1 are detachable. A testing component is located on top of the wiring box 1, which can test the performance of a brushless motor. Wiring holes 2 are provided on the side walls and top of the wiring box 1. A stabilizing plate 3 is bolted to the top of the wiring box 1. The stabilizing plate 3 is made of acrylic sheet and has an L-shaped cross-section. The stabilizing plate 3 is located above the wiring holes 2. With the wiring holes 2 and the wiring box 1 in place, connecting wires between the controller 4, power supply, and motor can be threaded through. The controller 4 can be installed and fixed with the stabilizing plate 3.
[0024] The testing assembly includes a controller 4, a test bench 5, a mounting frame 8, a mounting base 9, a fixing component 10, a pressing handle 11, a connecting component 12, a pressure rod 13, a connecting plate 14, a limit seat 15, a slider 16, a vertical rod 17, a buffer spring 18, and a stopper head 19. The controller 4 is mounted on the side wall of the stable frame 3. The test bench 5 is bolted to the top of the cable tray 1. The mounting frame 8 is bolted to the top of the cable tray 1. The mounting base 9 is bolted to the side wall of the mounting frame 8. The fixing component 10 is bolted to the side wall of the mounting base 9. The pressing handle... Handle 11 is rotatably mounted on the side wall of fixing member 10. Connector 12 is rotatably sleeved on the outside of pressing handle 11. Controller 4 includes a chip, control button, display screen, and wiring port. Connector 12 has an H-shaped cross-section. Press handle 11 is inclined and covered with an anti-slip sleeve. The surface of test platform 5 has a groove 6. A cover plate 7 is rotatably mounted on the top of test platform 5. A damping structure is provided between cover plate 7 and test platform 5. Pressure rod 13 is rotatably mounted on the end of connector 12. Connecting plate 14 is mounted on the pressure rod. At the bottom end of rod 13, the limiting seat 15 is bolted to the side wall of the fixing frame 8. The slider 16 is slidably mounted on the outside of the limiting seat 15. The vertical rod 17 is inserted into the connecting plate 14. The buffer spring 18 is mounted on the outside of the vertical rod 17. The stopper head 19 is mounted at the bottom end of the vertical rod 17. The pressure rod 13 is slidably disposed with the fixing member 10. The slider 16 is fixedly connected to the connecting plate 14. The buffer spring 18 is located between the connecting plate 14 and the stopper head 19. The user motor is installed in the groove 6 on the surface of the test bench 5. The cover plate 7 is used to control the electric motor. The machine is limited, and then the controller 4 is connected to the power supply and the motor under test according to the names of each function line and powered on. Then, the corresponding control button is pressed to test the function of the motor. The user pulls the handle 11 downward. Under the limiting cooperation of the connector 12 and the fixing part 10, the pulling of the handle 11 causes the pressure rod 13 to move down. The downward movement of the pressure rod 13 drives the connecting plate 14 to move down. With the setting of the limit seat 15 and the slider 16, the vertical movement of the connecting plate 14 can be guaranteed. The downward movement of the connecting plate 14 drives the vertical rod 17 and the stall head 19 to move down, thus completing the test of the motor stall function.
[0025] In this embodiment
[0026] When using this automatic motor tester that combines FG and Hall signal speed measurement for direction determination, the connecting wires between the controller 4, power supply, and motor can be threaded through the wiring hole 2 and the wiring box 1. The controller 4 can be installed and fixed in place with the support plate 3. When testing the motor, the user installs the motor in the groove 6 on the surface of the test bench 5, uses the cover plate 7 to limit the motor's position, and then connects the controller 4, power supply, and the motor under test according to their respective function line names and powers it on. Subsequently, pressing the corresponding control button tests the motor's functions. During the test, the control of the direction and braking functions is directly achieved by inverting the GPIO port level. The chip captures the input FG (H1) signal, obtains the level change interval, calculates the cycle time of each revolution, and obtains the motor speed. The precise direction recognition, which is the focus of this optimization, relies on two Hall signal inputs. H1 can be used as a normal FG signal. The entry time is marked in the capture interrupt, and then the external interrupt of the GPIO port is entered by using the H2 signal inversion. The interval between the last H1 signal capture interrupt and the current external interrupt is obtained in it. Since the interval between H1 and H2 is 60° when rotating forward and 120° when rotating backward, the interval between their trigger signals is different. Based on this, the direction of motor rotation is determined, and the various functions and directions of the motor are tested and obtained, which improves the applicability and testing efficiency of the tester. When it is necessary to test the motor's stall function, the user pulls down the pressing handle 11. Under the limiting cooperation of the connecting part 12 and the fixing part 10, the pulling of the pressing handle 11 causes the pressure rod 13 to move down. The downward movement of the pressure rod 13 drives the connecting plate 14 to move down. With the setting of the limiting seat 15 and the slider 16, the vertical movement of the connecting plate 14 can be guaranteed. The downward movement of the connecting plate 14 drives the vertical rod 17 and the stall head 19 to move down, thus completing the test of the motor's stall function.
[0027] Of course, there may be other implementations of this utility model. Based on this implementation, other implementations obtained by those skilled in the art without any creative effort are all within the scope of protection of this utility model.
Claims
1. An automatic motor tester that combines FG and Hall signal speed measurement for direction determination, characterized in that, The device includes a cable tray, which is hollow inside. The side panels of the cable tray are detachable. A testing assembly is installed on top of the cable tray to test the performance of the brushless motor.
2. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 1, is characterized in that, The cable tray has cable threading holes on its side walls and top, and a sturdy frame plate is bolted to the top of the cable tray.
3. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 2, is characterized in that... The stabilizing plate is made of acrylic sheet, and the cross-section of the stabilizing plate is L-shaped. The stabilizing plate is located above the wire hole.
4. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 1, is characterized in that... The test assembly includes a controller, a test bench, a mounting frame, a mounting base, a fixing component, a pressing handle, and a connecting component. The controller is mounted on the side wall of the stable frame plate. The test bench is bolted to the top of the cable management box. The mounting frame is bolted to the top of the cable management box. The mounting base is bolted to the side wall of the mounting frame. The fixing component is bolted to the side wall of the mounting base. The pressing handle is rotatably mounted on the side wall of the fixing component. The connecting component is rotatably sleeved on the outside of the pressing handle.
5. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 4, is characterized in that... The controller includes a chip, control buttons, a display screen and a wiring port. The connector has an H-shaped cross-section, the push handle is inclined, and the push handle is covered with an anti-slip sleeve.
6. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 4, is characterized in that... The test bench has a groove on its surface, and a cover plate is rotatably installed on the top of the test bench. A damping structure is provided between the cover plate and the test bench.
7. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 1, is characterized in that... The test assembly also includes a pressure rod, a connecting plate, a limiting seat, a slider, a vertical rod, a buffer spring, and a stopper. The pressure rod is rotatably mounted on the end of the connecting piece, the connecting plate is mounted on the bottom end of the pressure rod, the limiting seat is bolted to the side wall of the fixed frame, the slider is slidably mounted on the outside of the limiting seat, the vertical rod is inserted into the connecting plate, the buffer spring is mounted on the outside of the vertical rod, and the stopper is mounted on the bottom end of the vertical rod.
8. An automatic motor tester for determining direction using both FG and Hall signals for speed measurement, as described in claim 7, is characterized in that... The pressure rod is slidably disposed with the fixing component, the slider is fixedly connected to the connecting plate, and the buffer spring is located between the connecting plate and the stop head.