Distance fixing device of high-sensitivity counter, design method and movement detection device

Abstract

The invention relates to the technical field of water meter counter design, and discloses a distance fixing device of a high-sensitivity counter, a design method and a movement detection device.The distance fixing device of the high-sensitivity counter comprises a mounting frame, a movement clamp and a motor clamp, a sensor used for detecting the number of rotation turns of the movement plum-blossom needle is installed on the movement clamp, a controller connected with the motor is installed on the installation frame, and a distance adjuster used for adjusting the distance between the movement and the motor is installed on the installation frame. The farthest distance between the movement and the motor is determined through debugging, so that the sensitivity of the counter is improved.

Description

Technical Field

[0001] The present application relates to the technical field of water meter counter design, and in particular to a distance setting device, a design method and a movement detection device of a high-sensitivity counter. Background Art

[0002] In the existing water meter, the magnet arranged on the impeller is coupled with the magnet on the movement, and the water flow drives the rotation of the impeller, which further drives the counter inside the movement to operate.

[0003] The existing counter sensitivity detection is mainly through the water flow to drive the impeller of the movement to rotate, thereby driving the counter to rotate through the magnetic steel coupling principle. This type of water meter has high sensitivity requirements because the impeller needs a certain initial friction to start. It is difficult to achieve effective detection when the flow rate is low. Summary of the invention

[0004] In order to improve the sensitivity of a counter, the present application provides a distance device, a design method and a movement detection device of a high-sensitivity counter.

[0005] In a first aspect, the present application provides a distance device for a high-sensitivity counter, which adopts the following technical solution: A design method for a high-sensitivity counter includes a mounting frame and a movement fixture and a motor fixture mounted on the mounting frame, wherein a sensor for detecting the number of revolutions of a movement plum blossom needle is mounted on the movement fixture, a controller connected to the motor is mounted on the mounting frame, and a distance adjuster for adjusting the distance between the movement and the motor is mounted on the mounting frame.

[0006] By adopting the above technical solution, the movement is installed on the movement fixture, the sensor detects the number of rotations of the movement plum blossom needle, the motor is installed on the motor fixture, the motor and the controller are connected, the controller controls the motor to set the corresponding number of rotations according to the flow rate, and the distance regulator is used to adjust the distance between the movement and the motor, and change the coupling force between the motor and the movement. If the coupling force is too large, the friction force on the center wheel of the counter will increase, so the initial friction force will be large and the sensitivity will be low. If the coupling force is too small, the counter may be out of gear if the movement impeller accelerates too fast at an instant. The movement and the motor are debugged to determine the farthest distance to minimize the initial friction of the counter, and the corresponding products are produced according to the determined distance. The movement and the motor of qualified products maintain the optimal distance, thereby improving the sensitivity of the counter.

[0007] Optionally, a guide block for guiding the movement fixture to slide up and down is installed on the mounting frame, and the motor fixture is fixedly installed on the mounting frame.

[0008] By adopting the above technical solution, the design of the guide block makes the movement fixture more stable when sliding up and down, avoiding the problem of inaccurate positioning due to shaking or offset.

[0009] Optionally, the distance adjuster includes two adjusting rods and a support block, the two adjusting rods are rotatably connected via a rotating shaft, the support block and the rotating shaft are fixedly connected, one end of the adjusting rod away from the support block is rotatably mounted on the mounting frame, one end of the adjusting rod away from the support block is hinged with the adjusting block, the adjusting block is horizontally slidably mounted on the mounting frame, the mounting frame is equipped with a fixing part for fixing the adjusting block, and the movement abuts against the support block.

[0010] By adopting the above technical solution, the movement is in contact with the support block. Through the cooperation of two adjustment rods and a support block, the height position of the support block can be changed, thereby changing the position of the movement. The support block can support and adjust the height of the movement.

[0011] Optionally, the fixing member is a screw rod, the screw rod is threadedly mounted on the mounting frame, and the screw rod is rotationally connected to the adjusting block.

[0012] By adopting the above technical solution, the screw is used as a fixing part, and the adjusting block can be firmly fixed by threaded connection to prevent it from moving or loosening during the test. This helps to keep the distance between the movement and the motor constant. Turning the screw can also drive the adjusting block to slide.

[0013] Optionally, the guide block is provided with a guide groove, one end of the rotating shaft is inserted into the guide groove, and the rotating shaft is slidably installed in the guide groove along with the movement of the supporting block.

[0014] By adopting the above technical solution, the cooperation between the guide rod and the guide groove makes the support block move more smoothly and accurately, avoiding positioning errors caused by shaking or offset.

[0015] In a second aspect, the present application provides a design method for a high-sensitivity counter, which adopts the following technical solution: A design method of a high-sensitivity counter is designed by using the distance device of the high-sensitivity counter mentioned above. Determine the motor model, the magnet on the motor output end, and the corresponding movement model; The motor is mounted on the motor fixture, and the motor is connected to the controller; The movement is installed on the movement fixture, the controller controls the motor to rotate, and the sensor synchronously detects the number of revolutions of the movement's plum blossom needle; Use the distance regulator to adjust the distance between the movement and the motor, test from far to near, or from near to far, to obtain the farthest startable distance between the movement and the motor.

[0016] By adopting the above technical solution, by determining parameters such as the motor model, magnet and movement model, as well as the connection and testing of the motor, movement, controller and sensor, the distance between the movement and the motor is adjusted, the farthest starting distance between the movement and the motor is obtained, the starting friction of the counter is minimized, and the sensitivity of the counter is improved.

[0017] In a third aspect, the present application provides a high-sensitivity counter movement detection device, which adopts the following technical solution: A movement detection device for a high-sensitivity counter, comprising a motor mounted on a test frame, wherein a magnetic steel is detachably mounted on the motor, and wherein a fixing component for fixing the movement and a lifting component for driving the motor to rise and fall are mounted on the test frame; the movement detection device also comprises a controller, a sensor and an indicator light electrically connected to the controller, and wherein the controller controls the number of revolutions of the motor.

[0018] By adopting the above technical solution, according to the distance determined during the design, after adjusting the magnetic steel distance between the movement and the motor, a test is carried out to check whether the number of revolutions at the speed corresponding to the minimum flow is consistent, and whether the number of revolutions of the motor is consistent with the number of revolutions of the movement. If they are not consistent, the indicator light gives a signal, and it can be judged that the production of the movement is unqualified, otherwise it is qualified.

[0019] Optionally, the fixing assembly includes a first clamping block fixedly mounted on the test frame, a mounting rod is mounted on the first clamping block, a second clamping block is slidably mounted on the mounting rod and a nut is threadedly connected to the mounting rod.

[0020] By adopting the above technical solution, after the first clamping block and the second clamping block are clamped, the nut is pressed against the second clamping block, so that the movement can be firmly fixed.

[0021] Optionally, the lifting assembly includes a fixed seat, a movable seat and a driving rod threadedly connected to the fixed seat, the driving rod and the movable seat are rotatably connected, the fixed seat is fixedly installed on the test frame, and the movable seat is slidably installed on the test frame.

[0022] By adopting the above technical solution, the lifting function of the motor is realized through the combination of the fixed seat, the movable seat and the driving rod. This design not only allows the position of the motor to be flexibly adjusted, but also enables the precise control of the lifting height of the motor through the rotation of the driving rod. This helps to meet the needs under different test conditions.

[0023] In summary, the present application includes at least one of the following beneficial effects: 1. Before the production of the product, the distance between the motor and the movement is determined, and the maximum distance between the movement and the motor is obtained without the movement being out of gear. Then the corresponding product is produced to reduce the initial friction of the counter and improve the sensitivity of the counter; 2. After the product is produced, install the motor and movement according to the distance determined during the design to test whether the movement is qualified. If the number of revolutions of the motor is inconsistent with the number of revolutions of the movement, the indicator light gives a signal, which can be judged that the production of the movement is unqualified, otherwise it is qualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the distance device of the high-sensitivity counter in the embodiment of the present application; Figure 2 is a cross-sectional view of the overall structure of the distance device of the high-sensitivity counter in an embodiment of the present application; Figure 3 It is a schematic diagram of a specific structure of a distance adjuster in a distance-fixing device of a high-sensitivity counter in an embodiment of the present application; Figure 4 It is a schematic top view of the overall structure of the distance device of the high-sensitivity counter in an embodiment of the present application; Figure 5 It is a schematic diagram of the overall structure of the movement detection device of the high-sensitivity counter according to the embodiment of the present application.

[0025] Description of reference numerals: 100, mounting frame; 110, guide block; 111, slide groove; 112, guide groove; 120, guide rail; 200, movement fixture; 210, first clamping plate; 211, slider; 220, second clamping plate; 230, slide rod; 300, motor fixture; 310, first positioning plate; 320, second positioning plate; 330, positioning rod; 400, distance adjuster; 410, adjusting rod; 411 , fixing rod; 420, supporting block; 421, guide rod; 430, rotating shaft; 440, adjusting block; 450, screw rod; 460, connecting rod; 500, test frame; 600, fixing assembly; 610, first clamping block; 620, mounting rod; 630, second clamping block; 700, lifting assembly; 710, fixing seat; 720, moving seat; 730, driving rod; 10, motor; 11, magnet; 20, movement. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-5 This application is described in further detail.

[0027] The embodiment of the first aspect of the present application discloses a distance device for a high-sensitivity counter.

[0028] Reference Figure 1 and Figure 2A distance device of a high-sensitivity counter includes a mounting frame 100 and a movement fixture 200 and a motor fixture 300 mounted on the mounting frame 100. The mounting frame 100 is equipped with a distance adjuster 400 for adjusting the distance between the movement fixture 200 and the motor fixture 300. A sensor for detecting the number of rotations of the plum blossom needle of the movement 20 is installed on the movement fixture 200. The mounting frame 100 is equipped with a controller. The controller is electrically connected to the sensor and the motor 10, and the controller is also connected to a signal indicator light. The specific installation positions of the controller, sensor and indicator light are not shown in the figure. The connection method and principle of the controller, sensor and indicator light are prior art, and this application will not elaborate on them. The sensor specifically adopts a laser sensor. The laser sensor, also known as a laser sensor, is a sensor that uses laser technology for measurement and detection. The laser sensor is prior art and this application does not make any improvements.

[0029] Specifically, refer to Figure 1 The motor 10 is mounted on the motor fixture 300, and the movement 20 is mounted on the movement fixture 200. The motor 10 drives the magnetic coupler to drive the counter to rotate. The motor 10 sets different counter sensitivity starting speeds through the controller. After the counter is coupled, it also rotates at the corresponding speed. The counter plum blossom needle pulse quantity can be synchronously collected through the sensor. The motor 10 maintains a fixed speed, and the distance between the movement 20 and the motor 10 is controlled by the distance regulator 400 to change the coupling force between the motor 10 and the movement 20. If the coupling force is too large, the friction force on the center wheel of the counter will increase, so the initial friction force will be large and the sensitivity will be low. If the coupling force is too small, if the impeller of the movement 20 accelerates too fast at an instant, the counter may be out of gear.

[0030] Reference Figure 1 and Figure 2 Specifically, the movement fixture 200 includes a first clamping plate 210 and a second clamping plate 220. The first clamping plate 210 is fixedly connected to a slide bar 230, and the second clamping plate 220 is slidably mounted on the slide bar 230. The slide bar 230 is threadedly connected with a nut. A guide block 110 for guiding the up and down sliding of the first clamping plate 210 is installed on the mounting frame 100. The first clamping plate 210 can only be slid up and down and is installed on the guide block 110. The first clamping plate 210 is fixedly connected to a slider 211. A slide groove 111 is provided on the guide block 110, and the slider 211 slides in the slide groove 111. After the movement 20 is clamped by the first clamping plate 210 and the second clamping plate 220, the nut is pressed against the second clamping plate 220. Different models of movements 20 are installed on the movement fixture 200, and the magnetic steel 11 of the motor 10 also changes accordingly. During debugging, the distance between the movement 20 and the motor 10 is controlled by the distance regulator 400 , and only the distance between the movement 20 and the magnetic steel 11 of the motor 10 changes.

[0031] The motor fixture 300 is fixedly mounted on the mounting frame 100. The motor fixture 300 includes a first positioning plate 310 and a second positioning plate 320. The first positioning plate 310 is fixedly mounted on the mounting frame 100. The first positioning plate 310 is fixedly connected with a positioning rod 330. The second positioning plate 320 is slidably mounted on the first positioning plate 310. The positioning rod 330 is also threadedly connected with a nut. After the motor 10 is clamped by the first positioning plate 310 and the second positioning plate 320, the nut is tightly pressed against the second positioning plate 320.

[0032] Reference Figure 2 and Figure 3 The distance adjuster 400 includes two adjusting rods 410 and a support block 420. The support block 420 is used to support the movement 20. The two adjusting rods 410 are rotatably connected through a rotating shaft 430. The support block 420 and the rotating shaft 430 are fixedly connected. A fixed rod 411 is rotatably installed at one end of the adjusting rod 410 away from the support block 420. The fixed rod 411 is fixedly installed on the guide block 110 of the mounting frame 100. The other adjusting rod 410 is rotatably connected with an adjusting block 440. The adjusting block 440 is horizontally slidably installed on the mounting frame 100. A guide rail 120 for guiding the sliding of the adjusting block 440 is fixedly installed on the mounting frame 100. A fixing member for fixing the adjusting block 440 is installed on the mounting frame 100. The adjusting block 440 slides on the guide rail 120, and the adjusting rod 410 and the adjusting block 440 rotate relatively to change the angle between the two adjusting rods 410. The height position of the support block 420 also changes accordingly, so that the height of the movement 20 is adjusted.

[0033] When the adjustment block 440 slides on the guide rail 120 and the height position of the support block 420 changes, the support block 420 also rotates with the fixed rod 411 as the rotation center. Since the lower surface of the movement 20 abuts against the support block 420, when the height position of the movement 20 is adjusted, the contact area between the support block 420 and the movement 20 also changes, but it does not affect the supporting effect of the support block 420 on the movement 20.

[0034] Reference Figure 3 The support block 420 is attached to the guide block 110. The guide block 110 is provided with a guide groove 112. One end of the rotating shaft 430 of the support block 420 is inserted into the guide groove 112. The guide groove 112 is an arc groove. The center of the guide groove 112 coincides with the rotation center line of the rotating shaft 430. When the support block 420 moves up and down, the guide rod 421 is slidably installed in the guide groove 112 to enhance the stability of the support block 420.

[0035] Reference Figure 2 The fixing member is a screw rod 450. Usually, the screw rod 450 is threadedly mounted on the mounting frame 100. One end of the screw rod 450 is rotatably connected to the adjusting block 440. The rotation of the screw rod 450 drives the adjusting block 440 to move.

[0036] Reference Figure 4 , the embodiment of the present application has four groups of distance adjusters 400, and the four groups of distance adjusters 400 are distributed at four corners to increase the contact area between the support block 420 and the movement 20. Every two groups of distance adjusters 400 share a screw rod 450, and a connecting rod 460 is fixedly connected between the adjustment blocks 440 of the two groups of distance adjusters 400. The screw rod 450 and the connecting rod 460 are rotatably connected, and the heights of the two groups of distance adjusters 400 can be adjusted synchronously. More specifically, a driving motor (not shown in the figure) that drives the screw rod 450 to rotate can be installed, and the two driving motors rotate synchronously, thereby enabling the support blocks 420 of the four groups of distance adjusters 400 to move upward or downward synchronously.

[0037] The implementation principle of the distance device of a high-sensitivity counter in the embodiment of the present application is as follows: When using the distance device to test the sensitivity of the counter, firstly, it is necessary to select the appropriate motor 10 model, the magnet 11 and the corresponding movement 20 model according to the test requirements; then, the motor 10 is installed on the motor fixture 300 and connected to the controller; then, the movement 20 is installed on the movement fixture 200 and connected to the controller through the sensor; at this time, the motor 10 can be started to rotate by the controller, and the signal output by the sensor can be observed at the same time to judge the rotation of the plum blossom needle of the movement 20; In order to obtain the farthest startable distance between the movement 20 and the motor 10, the distance between the movement fixture 200 and the motor fixture 300 can be gradually adjusted through the distance adjuster 400. During the adjustment process, the output signal of the sensor can be continuously observed. If the number of turns of the movement 20 and the motor 10 is consistent, the signal indicator light is always on / or a certain color, etc., and if they are inconsistent, the indicator light flashes / a certain specified color, etc., until the farthest distance that can stably start the movement 20 is found, so that the initial friction of the counter is minimized, thereby improving the sensitivity of the counter.

[0038] The embodiment of the second aspect of the present application discloses a design method for a high-sensitivity counter.

[0039] A design method of a high-sensitivity counter is designed by using the distance device of the high-sensitivity counter mentioned above. Determine the model of the motor 10, the magnetic steel 11 on the output end of the motor 10, and the corresponding model of the movement 20; The motor 10 is mounted on the motor fixture 300, and the motor 10 is connected to the controller; The movement 20 is mounted on the movement fixture 200, the controller controls the motor 10 to rotate, and the sensor synchronously detects the number of revolutions of the plum blossom needle of the movement 20; The distance between the movement 20 and the motor 10 is adjusted by the distance adjuster 400 , and the test is performed from far to near, or from near to far, to obtain the farthest startable distance between the movement 20 and the motor 10 .

[0040] Specifically, the controller controls the rotation of the motor 10, and the sensor synchronously detects the number of rotations of the plum blossom needle of the movement 20. After the motor 10 completes the specified number of rotations, the controller determines whether the number of rotations of the plum blossom needle of the movement 20 obtained by the sensor is consistent with the specified number of rotations of the motor 10. If they are consistent, the indicator light will be always on / or a certain color, etc., and if they are inconsistent, the indicator light will flash / a specified color, etc.

[0041] During the specific test, the distance between the movement 20 and the motor 10 is adjusted. The test can be conducted from far to near, or from near to far, to obtain the farthest startable distance. For example, when the distance between the movement 20 and the motor 10 is tested from far to near, because the distance is far and the coupling force is small, the counter will be out of gear under high-speed operation, and the next test section can be entered; the distance is continuously reduced until the number of rotations of the movement 20 and the number of revolutions of the motor 10 are the same, and the distance with the minimum coupling force is obtained. At this time, not only the problem of out of gear is avoided under the maximum flow rate, but also the distance between the movement 20 and the motor 10 is the farthest, the coupling force is minimized, the force exerted by the magnetic force on the impeller is also small, the initial friction force is small, and the sensitivity can be adjusted to the optimal state.

[0042] The design method of the high-sensitivity counter tests the maximum distance between the movement 20 and the motor 10, and then produces the corresponding product according to the obtained maximum distance.

[0043] The embodiment of the third aspect of the present application discloses a movement detection device for a high-sensitivity counter.

[0044] Reference Figure 5 A high-sensitivity counter movement detection device includes a test frame 500, a motor 10 detachably mounted on the test frame 500, and a magnet 11 detachably mounted on the motor 10. The movement 20 detection device also includes a controller, a sensor and an indicator light electrically connected to the controller, and the controller controls the number of revolutions of the motor 10. The specific installation positions of the controller, the sensor, and the indicator light are not shown in the figure. The connection method and principle of the controller, the sensor, and the indicator light are prior art, and this application will not elaborate on them.

[0045] The test stand 500 is provided with a fixing assembly 600 for fixing the movement 20 and a lifting assembly 700 for driving the motor 10 to rise and fall.

[0046] Specifically, the fixing assembly 600 includes a first clamp block 610 fixedly mounted on the test frame 500, the first clamp block 610 is fixedly connected to two mounting rods 620, the mounting rods 620 are penetrated by a second clamp block 630, the second clamp block 630 is slidably mounted on the mounting rods 620, a nut is threadedly connected on the mounting rods 620, the movement 20 is fixed between the first clamp block 610 and the second clamp block 630, and the movement 20 remains stationary during testing.

[0047] The lifting assembly 700 includes a fixed seat 710 fixedly mounted on the test frame 500, a movable seat 720 slidably mounted on the test frame 500, and a driving rod 730 threadedly mounted on the fixed seat 710. The driving rod 730 and the movable seat 720 are rotatably connected. By rotating the driving rod 730, the movable seat 720 moves upward toward the movement 20 or downward away from the movement 20 along the test frame 500. The fixed seat 710 is distributed with scales (not shown in the figure), and the movable seat 720 adjusts its position according to the designed size, and then installs the corresponding motor 10, magnetic steel 11 and movement 20.

[0048] The motor 10 has a motor base, and the motor 10 base and the moving base 720 are connected by screws. The movement 20 is first installed on the fixed assembly 600. If the position of the movement 20 changes, the installation position of the motor 10 is manually adjusted according to the position of the movement 20, so that the magnetic steel 11 in the movement 20 and the magnetic steel 11 on the motor 10 are aligned with each other for testing.

[0049] The implementation principle of the movement detection device of a high-sensitivity counter in the embodiment of the present application is as follows: Through the above-mentioned design method, different types of products can obtain the best sensitivity. Before the movement 20 leaves the factory, it is necessary to provide a detection device to check whether the produced products are qualified. According to the size of the originally designed magnetic steel 11 of different products, the magnetic steel 11 as the end of the motor 10 is replaced, and the distance between the magnetic steel 11 of the movement 20 and the magnetic steel 11 of the motor 10 is adjusted (the distance at the time of design). Then, a test is carried out to check whether the number of rotations of the motor 10 and the number of rotations of the movement 20 are consistent at the speed corresponding to the minimum flow rate. If they are inconsistent, the indicator light gives a signal, and it can be judged that the production of the movement 20 is unqualified, otherwise it is qualified.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A distance device for a high-sensitivity counter, characterized in that: The invention comprises a mounting frame (100), and a movement fixture (200) and a motor fixture (300) mounted on the mounting frame (100); a sensor for detecting the number of revolutions of a plum blossom needle of a movement (20) is mounted on the movement fixture (200); a controller connected to a motor (10) is mounted on the mounting frame (100); and a distance adjuster (400) for adjusting the distance between the movement (20) and the motor (10) is mounted on the mounting frame (100).

2. The distance device of a high-sensitivity counter according to claim 1, characterized in that: A guide block (110) for guiding the movement fixture (200) to slide up and down is installed on the mounting frame (100), and the motor fixture (300) is fixedly installed on the mounting frame (100).

3. The distance device of a high-sensitivity counter according to claim 2, characterized in that: The distance adjuster (400) comprises two adjusting rods (410) and a supporting block (420); the two adjusting rods (410) are rotatably connected via a rotating shaft (430); the supporting block (420) and the rotating shaft (430) are fixedly connected; one end of the adjusting rod (410) away from the supporting block (420) is rotatably mounted on the mounting frame (100); one end of the adjusting rod (410) away from the supporting block (420) is hingedly connected to the adjusting block (440); the adjusting block (440) is horizontally slidably mounted on the mounting frame (100); a fixing member for fixing the adjusting block (440) is installed on the mounting frame (100); and the movement (20) abuts against the supporting block (420).

4. The distance device of a high-sensitivity counter according to claim 3, characterized in that: The fixing member is a screw rod (450), the screw rod (450) is threadedly mounted on the mounting frame (100), and the screw rod (450) is rotatably connected to the adjustment block (440).

5. The distance device of a high-sensitivity counter according to claim 3, characterized in that: The guide block (110) is provided with a guide groove (112), one end of the rotating shaft (430) is inserted into the guide groove (112), and the rotating shaft (430) is slidably installed in the guide groove (112) along with the movement of the supporting block (420).

6. A method for designing a high-sensitivity counter, designed according to a distance device of a high-sensitivity counter according to any one of claims 1 to 5, characterized in that: Determine the model of the motor (10), the magnetic steel (11) on the output end of the motor (10), and the corresponding model of the movement (20); The motor (10) is mounted on the motor fixture (300), and the motor (10) is connected to the controller; The movement (20) is mounted on the movement fixture (200), the controller controls the motor (10) to rotate, and the sensor synchronously detects the number of revolutions of the plum blossom needle of the movement (20); The distance between the movement (20) and the motor (10) is adjusted by means of a distance adjuster (400), and the test is performed from far to near, or from near to far, to obtain the farthest startable distance between the movement (20) and the motor (10).

7. A high-sensitivity counter movement detection device, characterized in that: The invention comprises a test frame (500), a motor (10) mounted on the test frame (500), a magnetic steel (11) being detachably mounted on the motor (10), a fixing component (600) for fixing a movement (20), and a lifting component (700) for driving the motor (10) to move up and down being mounted on the test frame (500); the movement detection device further comprises a controller, a sensor and an indicator light electrically connected to the controller, and the controller controls the number of revolutions of the motor (10).

8. The high-sensitivity counter movement detection device according to claim 7, characterized in that: The fixing assembly (600) comprises a first clamping block (610) fixedly mounted on the test frame (500), a mounting rod (620) being mounted on the first clamping block (610), a second clamping block (630) being slidably mounted on the mounting rod (620) and being threadedly connected with a nut.

9. The high-sensitivity counter movement detection device according to claim 7, characterized in that: The lifting assembly (700) comprises a fixed seat (710), a movable seat (720), and a driving rod (730) threadedly connected to the fixed seat (710), the driving rod (730) and the movable seat (720) are rotatably connected, the fixed seat (710) is fixedly mounted on the test frame (500), and the movable seat (720) is slidably mounted on the test frame (500).

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