Hall sensor water flow testing device and testing method thereof

Abstract

The invention discloses a Hall sensor water flow testing device and a testing method thereof, and relates to the technical field of sensor testing, the testing device comprises a positioning assembly and a water flow testing assembly, the positioning assembly comprises a positioning table, a positioning mechanism, a first connecting pipe and a second connecting pipe, and the first connecting pipe and the second connecting pipe are slidably arranged on the positioning table; the positioning mechanism is arranged on the positioning table, located between the first connecting pipe and the second connecting pipe and used for fixing the Hall sensor to be tested. The water flow testing assembly comprises a water inlet pipe, a water outlet pipe and a plurality of adjusting units, each adjusting unit comprises an adjusting pipe, a switch valve and an adjusting valve, the switch valves and the adjusting valves are arranged on the adjusting pipes, two ends of each adjusting pipe are connected with the water inlet pipe and the water outlet pipe, and the water inlet pipe is connected with the first connecting pipe. In the testing process, the multiple adjusting valves are adjusted to be in the preset water flow state, the performance of the Hall sensor in different water flow states can be tested in sequence by controlling the switching valves of the adjusting pipes one by one, and the working efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of sensor detection technology, and specifically to a Hall sensor water flow testing device and its testing method. Background Technology

[0002] Hall effect water flow sensors operate based on the Hall effect. When water flows through the measuring pipe, it causes a conductor (such as a metal blade or magnetic rotor) in a magnetic field to rotate. The rotation of the conductor cuts the magnetic field lines, thereby generating a Hall voltage. Water flow testing verifies the performance of the Hall effect in a real-world water flow environment, ensuring that the sensor accurately converts changes in water flow into an electrical signal. Therefore, to evaluate the quality of a Hall sensor, it is necessary to perform a water flow test on it before it leaves the factory.

[0003] However, existing testing devices only have one flow control valve. When it is necessary to test the performance of the Hall sensor under different water flow conditions, the flow control valve needs to be manually adjusted frequently, which is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a Hall sensor water flow testing device and its testing method. This invention solves the technical problem that in the prior art, the testing device only has one flow regulating valve, and when it is necessary to test the performance of the Hall sensor under different water flow conditions, it is necessary to manually and frequently adjust the flow regulating valve, which is time-consuming, labor-intensive, and inefficient.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a Hall sensor water flow testing device, comprising: A positioning assembly includes a positioning stage, a positioning mechanism, a first connecting tube, and a second connecting tube. At least one of the first and second connecting tubes is slidably disposed on the positioning stage. The positioning mechanism is disposed on the positioning stage and is located between the first and second connecting tubes for fixing a Hall sensor to be tested. A water flow testing component includes a main controller, an inlet pipe, an outlet pipe, and multiple regulating units. Each regulating unit includes a regulating pipe and a solenoid valve and a regulating valve mounted on the regulating pipe. Both ends of the multiple regulating pipes are connected to the inlet pipe and the outlet pipe. The multiple solenoid valves are all connected to the main controller. The inlet pipe is connected to the first connecting pipe.

[0006] In some embodiments, both the first connecting pipe and the second connecting pipe are slidably disposed on the positioning platform.

[0007] In some embodiments, the positioning mechanism is slidably disposed on the positioning platform.

[0008] In some embodiments, the positioning mechanism includes a sliding stage and a limiting cover. The sliding stage has a positioning groove for engaging a Hall sensor, and the limiting cover is movably connected to the sliding stage and can open or close the positioning groove when in motion.

[0009] In some embodiments, one end of the limiting cover is rotatably connected to the sliding table, and can cover or open the positioning groove when rotated.

[0010] In some embodiments, the positioning mechanism further includes a locking screw located at the free end of the limiting cover and threadedly connected to the sliding table when the limiting cover covers the positioning groove.

[0011] In some embodiments, the Hall sensor water flow testing device further includes a fixed frame and a drive assembly. The positioning platform is rotatably connected to the fixed frame, and the fixed frame has a test position and an unloading position. The drive assembly is connected to the positioning platform and is used to drive the positioning platform to rotate, so as to switch between the test position and the unloading position. When the positioning platform is in the test position, the first connecting pipe and the second connecting pipe can be inserted into the Hall sensor of the positioning mechanism.

[0012] In some embodiments, the drive assembly includes a drive cylinder, a rack, and a gear. The rack is slidably disposed on the fixed frame, and the gear is coaxially connected to the rotating shaft of the positioning table. The drive cylinder is connected to the rack and is used to drive the rack to slide back and forth, so that the rack drives the gear to rotate through meshing, and the gear drives the positioning table to rotate.

[0013] In some embodiments, the fixing frame has a through clearance hole, and the positioning platform can pass through the clearance hole when the positioning platform is switched from the unloading position to the test position. The positioning platform is in a vertical state in the test position and in a horizontal state in the unloading position.

[0014] Secondly, the present invention also provides a method for testing water flow rate using a Hall sensor, the method comprising the following steps: The Hall sensor to be tested is fixed in the positioning mechanism of the positioning component; Multiple regulating valves are adjusted to preset water flow positions, and control signals are sent to each solenoid valve in sequence through the main controller, so that the solenoid valves open or close in sequence, thereby controlling the water flow in different regulating pipes. Under the water flow conditions of each regulating pipe, the output signal of the Hall sensor is measured, and its performance parameters under different water flow rates are recorded. Based on the recorded performance parameters, evaluate whether the performance of the Hall sensor meets the requirements under different water flow conditions.

[0015] Compared with existing technologies, the Hall sensor water flow testing device provided by this invention has a first connecting pipe for connecting to the outlet of a water pump through the water flow testing component, and a second connecting pipe for connecting to the inlet of the water pump, so that the water pump can provide circulating water flow for testing. During the testing process, multiple regulating valves can be pre-adjusted to a preset water flow state. After the water pump stably delivers water flow, the water flow will pass through multiple regulating pipes. Therefore, it is only necessary to control the solenoid valve on each regulating pipe one by one to test the performance of the Hall sensor under different water flow states. It is convenient to operate and has high working efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the Hall sensor water flow testing device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the positioning component provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the positioning mechanism provided in an embodiment of the present invention; Figure 4 This is a schematic flowchart of the Hall sensor water flow testing method provided in an embodiment of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] To address the problem that existing testing devices only have one flow control valve, requiring frequent manual adjustment of this valve when testing the performance of a Hall sensor under different water flow conditions, which is time-consuming, labor-intensive, and inefficient, this invention provides a Hall sensor water flow testing device and method. This device enables rapid testing of the Hall sensor's performance under different water flow conditions simply by opening and closing a solenoid valve, saving time and effort while increasing efficiency.

[0019] It should be noted that the Hall sensor water flow testing device described in this invention is used for, but not limited to, Hall sensors. For ease of explanation, this invention will only use the application of the Hall sensor water flow testing device to a Hall sensor as an example. The principle of the Hall sensor water flow testing device applied to other types of equipment is essentially the same as that applied to a Hall sensor, and will not be described in detail here.

[0020] Please see Figure 1 and Figure 2 , Figure 1This is a schematic diagram of the structure of a Hall sensor water flow testing device according to an embodiment of the present invention. The Hall sensor water flow testing device includes a positioning component 1 and a water flow testing component 2. The positioning component 1 includes a positioning platform 11, a positioning mechanism 12, a first connecting pipe 13 and a second connecting pipe 14. At least one of the first connecting pipe 13 and the second connecting pipe 14 is slidably disposed on the positioning platform 11. The positioning mechanism 12 is disposed on the positioning platform 11 and is located between the first connecting pipe 13 and the second connecting pipe 14 and is used to fix the Hall sensor 3 to be tested. The water flow test assembly 2 includes a main controller, an outlet pipe 21, an inlet pipe 22, and multiple regulating units 23. Each regulating unit 23 includes a regulating pipe 231 and a solenoid valve 232 and a regulating valve 233 mounted on the regulating pipe 231. Both ends of the multiple regulating pipes 231 are connected to the outlet pipe 21 and the inlet pipe 22. The inlet pipe 22 is connected to the first connecting pipe 13, and the second connecting pipe 14 is used to connect to the outlet of the water pump. The multiple solenoid valves 232 are all connected to the main controller, which can be used to control the on / off state of all the solenoid valves 232.

[0021] In this embodiment, the Hall sensor water flow testing device achieves efficient performance testing of the Hall sensor 3 through the coordinated operation of the positioning component 1 and the water flow testing component 2. The positioning platform 11 in the positioning component 1 serves as the core support component, supporting the positioning mechanism 12, the first connecting pipe 13, and the second connecting pipe 14. At least one of the first connecting pipe 13 and the second connecting pipe 14 is slidably mounted on the positioning platform 11 to allow for flexible adjustment according to the size and installation position of the Hall sensor 3, ensuring precise alignment between the first connecting pipe 13 and the second connecting pipe 14 and the inlet and outlet of the Hall sensor 3. The positioning mechanism 12 is located between the first connecting pipe 13 and the second connecting pipe 14, used to securely fix the Hall sensor 3 to be tested, and also facilitates the insertion of the first connecting pipe 13 and the second connecting pipe 14 from both ends of the Hall sensor 3 during the testing process.

[0022] The water flow test assembly 2 is responsible for providing water flows of different rates to test the performance of the Hall sensor 3. The water flow test assembly 2 includes an outlet pipe 21, an inlet pipe 22, and multiple regulating units 23. Each regulating unit 23 consists of a regulating pipe 231 and a solenoid valve 232 and a regulating valve 233 thereon. By pre-adjusting each regulating valve 233, the water flow rate of different regulating pipes 231 can be set to different preset values, thereby simulating various water flow states. The number of regulating units 23 is not limited; for example, in this embodiment, there are five regulating units 23, which can simultaneously measure the Hall voltage of the Hall sensor 3 under five different water flow rates. In other embodiments, the number of regulating units 23 can also be set to other numbers, such as three, four, or more than five.

[0023] Each solenoid valve 232 is connected to a main controller, which sequentially controls the on / off states of multiple solenoid valves. In this embodiment, the water flow testing component 2 achieves automated control of multiple solenoid valves 232 through the main controller. The main controller, as the core control unit, is connected to the solenoid valves 232 in each regulating unit 23. These solenoid valves 232 are installed on regulating pipes 231 and are used to control the on / off state of water flow in the corresponding regulating pipes 231. During the test, the main controller sequentially sends control signals to each solenoid valve 232 according to a preset program, causing the solenoid valves to open or close in sequence, thereby achieving water flow switching between different regulating pipes 231. Through this control method, the device of this application can quickly and accurately switch between multiple preset water flow states to complete the performance test of the Hall sensor 3, improving testing efficiency and automation, and reducing manual intervention. It should be emphasized that the preset program built into the main controller is an existing program; this application simply applies this existing program to the water flow test of the Hall sensor.

[0024] During testing, by controlling the on / off state of solenoid valve 232, water is supplied sequentially through different regulating pipes 231. Under the action of water pump 6, the water flows sequentially through the second connecting pipe 14, Hall sensor 3, first connecting pipe 13, inlet pipe 22, regulating pipe 231, and outlet pipe 21. The outlet pipe 21 then returns the water flow to water pump 6, thereby enabling performance testing of Hall sensor 3 under different water flow conditions. This design not only improves testing efficiency but also reduces the need for frequent manual adjustment of the flow valve, significantly enhancing the convenience and accuracy of the test.

[0025] The water pump 6 is connected to a return water main pipe 61 and an outlet water main pipe 62, which are respectively connected to the inlet and outlet of the water pump 6. The water pump 6 is also connected to a water tank (not shown in the figure), which is filled with water for testing. When the water pump 6 is working, it can drive the water in the water tank to the outlet water main pipe 62. The end of the outlet water main pipe 62 away from the water pump 6 is connected to the second connecting pipe 14, so the water flow from the outlet water main pipe 62 can enter the second connecting pipe 14, and then pass through the above-mentioned pipes to the Hall sensor 3. The water flow output from the Hall sensor 3 is output through the first connecting pipe 13 to the water flow test component 2, and then from the water flow test component 2 to the return water main pipe 61, and finally back to the water pump 6. Specifically, the positioning component 1 also includes a water inlet connector 19 provided on the positioning platform 11. The water inlet connector 19 is connected to the second connecting pipe 14, and the end of the outlet water main pipe 62 away from the water pump 6 is connected to the water inlet connector 19.

[0026] In one embodiment, please refer to Figure 2Both the first connecting pipe 13 and the second connecting pipe 14 are slidably mounted on the positioning platform 11. In this embodiment, both the first connecting pipe 13 and the second connecting pipe 14 are slidably mounted on the positioning platform 11, allowing them to slide and adjust along a specific direction on the platform 11. This enables flexible adjustment based on the installation position and size of the Hall sensor 3. Compared to embodiments where only one connecting pipe slides, this embodiment allows both connecting pipes to slide, providing greater adjustability and greater ease of use.

[0027] The positioning assembly 1 also includes a power cylinder 15, a slider 16, a slide rail 17, and a water outlet connector 18. The slide rail 17 is fixedly mounted on the positioning platform 11. The slider 16 is slidably connected to the slide rail 17. The first connecting pipe 13 is located on the slider 16. The water outlet connector 18 is located on the slider 16 and connected to the first connecting pipe 13. After receiving water flow, the water outlet connector 18 will input water flow into the first connecting pipe 13. The drive cylinder 15 is connected to the slider 16 and can drive the slider 16 to slide back and forth. When the slider 16 slides toward the second connecting pipe 14, the first connecting pipe 13 first inserts one end of the Hall sensor 3. As the slider 16 continues to slide, the positioning mechanism 12 is slidably mounted on the positioning platform 11. The first connecting pipe 13 pushes the positioning mechanism 12 to slide toward the second connecting pipe 14 until the other end of the Hall sensor 3 is inserted into the second connecting pipe 14, thereby completing the connection between the Hall sensor 3 and the two connecting pipes. When water flows into the Hall sensor 3 through the first connecting pipe 13, the water flows through the Hall sensor 3, causing the conductor (such as a metal blade or magnetic rotor) in the magnetic field to rotate. The rotation of the conductor cuts the magnetic field lines, thereby generating a Hall voltage. The Hall sensor 3 can be connected to a voltage display to show the voltage generated by the Hall sensor 3. By observing whether the voltage is within the acceptable range, the performance of the Hall sensor 3 can be determined.

[0028] In one embodiment, please refer to Figure 3The positioning mechanism 12 includes a sliding table 121 and a limiting cover 122. The sliding table 121 has a positioning groove 123 for engaging the Hall sensor 3. The limiting cover 122 is movably connected to the sliding table 121 and can open or close the positioning groove 123 when in motion. In this embodiment, the shape of the positioning groove 123 is adapted to the Hall sensor 3 so that after the Hall sensor 3 is engaged in the positioning groove 123, the positioning groove 123 can position the Hall sensor 123 in all directions. There are various ways in which the limiting cover 122 is movably connected to the sliding table 121, such as a sliding connection or a rotating connection. In this embodiment, a rotating connection is preferred because it is convenient to operate and occupies less space. The limiting cover 122 is used to limit the top of the Hall sensor 3. When the limiting cover 122 is closed in the positioning groove 123, a locking screw 124 can be used to pass through the through hole on the limiting cover 122 and then threaded to the sliding table 121 to lock the limiting cover 122. When it is necessary to open the positioning groove 123, the locking screw 124 can be removed. When the limiting cover 122 closes the positioning groove 123, the limiting cover 122 abuts against the Hall sensor 3 in the positioning groove 123, thereby limiting the top of the Hall sensor 3 and ensuring that the Hall sensor 3 is completely fixed in the positioning groove 123, resulting in stable testing of the Hall sensor 3. After the Hall sensor 3 has been tested, the limiting cover 122 can be rotated to open the positioning groove 123, at which point the Hall sensor 3 can be removed from the positioning groove 123, and the next Hall sensor 3 to be tested can be placed into the positioning groove 123.

[0029] In addition to being locked with the locking screw 124, the free end of the aforementioned limiting cover 122 can also be locked in other ways, such as with a buckle or Velcro, without further limitation.

[0030] In one embodiment, please refer to Figure 2The Hall sensor water flow testing device also includes a fixed frame 4 and a drive assembly 5. A positioning platform 11 is rotatably connected to the fixed frame 4. The fixed frame 4 has a test position and an unloading position. The drive assembly 5 is connected to the positioning platform 11 and drives the positioning platform 11 to rotate, switching between the test position and the unloading position. When the positioning platform 11 is in the test position, the first connecting pipe 13 and the second connecting pipe 14 can be inserted into the Hall sensor 3 of the positioning mechanism 12. In this embodiment, the Hall sensor water flow testing device achieves the switching of the positioning platform 11 between the test position and the unloading position through the fixed frame 4 and the drive assembly 5. The fixed frame 4 serves as a support structure, with two workstations: a test position and an unloading position. The positioning platform 11 is mounted on the fixed frame 4 via a rotatable connection and can be position-switched under the drive of the drive assembly 5. The drive assembly 5 is located on the positioning platform 11 and achieves the rotation of the positioning platform 11 through mechanical transmission. When the positioning platform 11 is in the test position, the first connecting pipe 13 and the second connecting pipe 14 can be accurately inserted into the Hall sensor 3 fixed in the positioning mechanism 12, ensuring that the water flow can pass smoothly through the Hall sensor for testing; when the positioning platform 11 is in the unloading position, it is convenient for operators to install or remove the Hall sensor, improving testing efficiency and operational convenience.

[0031] Further, please refer to Figure 2 The drive assembly 5 includes a drive cylinder 51, a rack 52, and a gear 53. The rack 52 is slidably mounted on the fixed frame 4, and the gear 53 is coaxially connected to the rotating shaft of the positioning table 11. The drive cylinder 51 is connected to the rack 52 and drives the rack 52 to slide back and forth, so that the rack 52 drives the gear 53 to rotate through meshing, and the gear 53 drives the positioning table 11 to rotate. In this embodiment, the drive assembly 5 achieves precise rotation control of the positioning table 11 through the drive cylinder 51, rack 52, and gear 53. The rack 52 is slidably mounted on the fixed frame 4 and can move back and forth within the guide rail of the fixed frame 4. The gear 53 is coaxially connected to the rotating shaft of the positioning table 11, ensuring that the rotation of the gear 53 can directly drive the positioning table 11 to rotate. The drive cylinder 51 is connected to the rack 52, and the extension and retraction of the cylinder drives the rack 52 to slide back and forth along the guide rail of the fixed frame 4. The rack 52 meshes with the gear 53. When the rack 52 moves, it drives the gear 53 to rotate through the meshing relationship, thereby causing the positioning stage 11 to switch between the test position and the unloading position. This structure not only realizes the automated position switching of the positioning stage 11, but also improves the convenience of operation and the testing efficiency.

[0032] In one embodiment, please refer to Figure 2 The fixed frame 4 has a through clearance hole 41. When the positioning platform 11 is switched from the unloading position to the test position, the positioning platform 11 can pass through the clearance hole 41. The positioning platform 11 is in a vertical state in the test position and in a horizontal state in the unloading position. Figure 2The illustrated embodiment shows schematic diagrams of the positioning platform 11 in both the test and unloading positions. In this embodiment, the clearance hole 41 on the mounting frame 4 assists in switching the positioning platform 11 between the unloading and test positions. When the positioning platform 11 rotates from the unloading position to the test position, its structural design allows it to smoothly pass through the clearance hole 41 on the mounting frame 4. In the test position, the positioning platform 11 is in a vertical position. This vertical layout facilitates the smooth flow of water through the Hall sensor 3 (water flows from top to bottom), reducing water flow resistance and improving test accuracy. In the unloading position, the positioning platform 11 is in a horizontal position, facilitating the installation and removal of the Hall sensor 3 by the operator.

[0033] Please see Figure 4 The present invention also provides a method for testing water flow rate using a Hall sensor, the method comprising the following steps: Step 1: Fix the Hall sensor 3 to be tested inside the positioning mechanism 12 of the positioning component 1.

[0034] First, move the positioning platform 11 of the positioning component 1 to the unloading position. At this time, the positioning platform 11 is in a horizontal state, which makes it easier for the operator to install the Hall sensor 3. Open the limiting cover 122 of the positioning mechanism 12, place the Hall sensor 3 to be tested on the sliding table 121 of the positioning mechanism 12, and align the inlet and outlet of the Hall sensor 3 with the positions of the first connecting pipe 13 and the second connecting pipe 14 respectively. Adjust the position of Hall sensor 3 to ensure that it is installed correctly, then rotate the limit cover 122 to cover the positioning groove 123, and fix the limit cover 122 on the sliding table 121 by tightening screw 124, thereby firmly fixing Hall sensor 3. After the Hall sensor 3 is installed, the positioning platform 11 is driven to rotate from the unloading position to the test position by the drive component 15. At this time, the positioning platform 11 switches from the horizontal state to the vertical state, and the first connecting pipe 13 and the second connecting pipe 14 can be inserted into the inlet and outlet of the Hall sensor 3 to prepare for the subsequent water flow test.

[0035] Step 2: Adjust each of the multiple regulating valves 233 to a preset water flow position. The water flow rate opened by each regulating valve 233 is usually different to facilitate testing the performance parameters of the Hall sensor 3 under different water flow rates. Then, the main controller sends control signals to each solenoid valve 232 sequentially according to a preset test sequence and time interval, causing each solenoid valve 232 to open or close in sequence, controlling the water flow in different regulating pipes 231. During the test, only one solenoid valve 232 is in the open state, while the rest of the solenoid valves 232 are in the closed state, and the water pressure output by the water pump is constant, so as to test the performance of the Hall sensor by the controlled variable method. After receiving a control signal, each solenoid valve 232 executes a corresponding action, opening or closing the corresponding regulating pipe 231. When the solenoid valve 232 is open, water flows through the regulating pipe 231 into the Hall sensor 3; when the solenoid valve 232 is closed, the water flow is cut off. By controlling the on / off state of different solenoid valves 232, the water flow of different regulating pipes 231 is switched in sequence, thereby realizing the switching of multiple preset water flow states and providing different test conditions for Hall sensor 3. The main controller 24 can monitor the working status of the solenoid valve 232 in real time, ensuring that the solenoid valve 232 accurately executes control commands according to the preset program, thus guaranteeing the automation and reliability of the testing process.

[0036] Step 3: Under the water flow conditions of each regulating pipe, measure the output signal of the Hall sensor and record its performance parameters 3 under different water flow rates.

[0037] Under the water flow conditions of each regulating pipe 231, the Hall sensor 3 generates a corresponding output signal, such as Hall voltage, according to the change in water flow. Measuring devices such as voltmeters and data acquisition cards are connected to the output terminal of the Hall sensor 3 to measure its output signal in real time.

[0038] The measured output signal is transmitted to the data processing system for data acquisition and recording. The recorded data includes performance parameters such as the output voltage and response time of Hall sensor 3 under different water flow rates.

[0039] The data processing system can perform preliminary processing on the collected data, such as filtering and amplification, to improve the accuracy of the data.

[0040] At the same time, the recorded performance parameters can be compared with preset standard values ​​to preliminarily determine whether the performance of Hall sensor 3 is normal under the current water flow condition.

[0041] Step 4: Based on the recorded performance parameters, evaluate whether the performance of the Hall sensor meets the requirements under different water flow conditions.

[0042] The recorded performance parameters are analyzed and evaluated, and the performance parameters under each water flow condition are compared with the standard performance indicators of Hall sensor 3. The evaluation includes checking whether the output signal stability, linearity, sensitivity, and response time of Hall sensor 3 meet the requirements. For example, checking whether the output voltage is within the specified range and whether the response time meets the design requirements. Based on the evaluation results, determine whether the performance of Hall sensor 3 is qualified under different water flow conditions. If the performance parameters meet the standard requirements under all water flow conditions, the Hall sensor 3 is considered qualified; otherwise, it is deemed unqualified.

[0043] The evaluation results will be recorded and stored for subsequent quality traceability and statistical analysis. For the non-conforming Hall sensor 3, the causes of its performance problems can be further analyzed, providing a basis for product improvement and optimization.

[0044] Finally, the Hall sensor 3 is classified according to the evaluation results. Qualified products can enter the next process or be put into use, while unqualified products need to be reworked or scrapped.

[0045] To better understand this invention, the following is combined with... Figures 1 to 3 The technical solution of the present invention will be described in detail below: This application provides a Hall sensor water flow testing device, aiming to improve the testing efficiency and accuracy of Hall sensor 3 under different water flow conditions. The testing device mainly includes a positioning component 1 and a water flow testing component 2. The positioning component 1 consists of a positioning platform 11, a positioning mechanism 12, a first connecting pipe 13, and a second connecting pipe 14. The first connecting pipe 13 and the second connecting pipe 14 are both slidably mounted on the positioning platform 11 and can be flexibly adjusted according to the size of the Hall sensor 3. The positioning mechanism 12 is located between the two connecting pipes and is used to fix the Hall sensor 3 to be tested. The water flow testing component 2 includes an outlet pipe 21, an inlet pipe 22, multiple adjustment units 23, and a main controller. The adjustment unit 23 consists of an adjustment pipe 231, a solenoid valve 232, and an adjustment valve 233. The main controller sequentially controls the opening and closing of the solenoid valves to achieve the switching of different water flow states. In addition, the testing device also includes a fixing frame 4 and a drive component 5. The fixing frame 4 has a testing position and an unloading position, and the positioning platform 11 switches between the two positions through the drive component 5 (including a drive cylinder 51, a rack 52, and a gear 53). The mounting bracket 4 is also provided with clearance holes 41 so that the positioning platform 11 can pass smoothly when switching positions. The positioning platform 11 is in a vertical state in the test position and in a horizontal state in the unloading position, which optimizes the convenience of testing and operation.

[0046] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A Hall sensor water flow testing device, characterized in that, include: The positioning assembly includes a positioning stage, a positioning mechanism, a first connecting tube and a second connecting tube, at least one of the first connecting tube and the second connecting tube being slidably disposed on the positioning stage, and the positioning mechanism being disposed on the positioning stage, located between the first connecting tube and the second connecting tube and used to fix the Hall sensor to be tested. and A water flow testing component includes a main controller, an inlet pipe, an outlet pipe, and multiple regulating units. Each regulating unit includes a regulating pipe and a solenoid valve and a regulating valve mounted on the regulating pipe. Both ends of the multiple regulating pipes are connected to the inlet pipe and the outlet pipe. The multiple solenoid valves are all connected to the main controller. The inlet pipe is connected to the first connecting pipe.

2. The Hall sensor water flow testing device according to claim 1, characterized in that, Both the first connecting pipe and the second connecting pipe are slidably disposed on the positioning platform.

3. The Hall sensor water flow testing device according to claim 1, characterized in that, The positioning mechanism is slidably mounted on the positioning platform.

4. The Hall sensor water flow testing device according to claim 3, characterized in that, The positioning mechanism includes a sliding table and a limiting cover. The sliding table has a positioning groove for engaging a Hall sensor. The limiting cover is movably connected to the sliding table and can open or close the positioning groove when in motion.

5. The Hall sensor water flow testing device according to claim 4, characterized in that, One end of the limiting cover is rotatably connected to the sliding platform, and can cover or open the positioning groove when rotated.

6. The Hall sensor water flow testing device according to claim 5, characterized in that, The positioning mechanism also includes a locking screw, which is located at the free end of the limiting cover and is threadedly connected to the sliding table when the limiting cover covers the positioning groove.

7. The Hall sensor water flow testing device according to claim 1, characterized in that, The Hall sensor water flow testing device further includes a fixed frame and a drive assembly. The positioning platform is rotatably connected to the fixed frame, and the fixed frame has a test position and an unloading position. The drive assembly is connected to the positioning platform and is used to drive the positioning platform to rotate, so as to switch between the test position and the unloading position. When the positioning platform is in the test position, the first connecting pipe and the second connecting pipe can be inserted into the Hall sensor of the positioning mechanism.

8. The Hall sensor water flow testing device according to claim 7, characterized in that, The drive assembly includes a drive cylinder, a rack, and a gear. The rack is slidably mounted on the fixed frame. The gear is coaxially connected to the rotating shaft of the positioning table. The drive cylinder is connected to the rack and is used to drive the rack to slide back and forth, so that the rack drives the gear to rotate through meshing. The gear drives the positioning table to rotate.

9. The Hall sensor water flow testing device according to claim 1, characterized in that... The fixing frame has a through clearance hole. When the positioning platform is switched from the unloading position to the test position, the positioning platform can pass through the clearance hole. The positioning platform is in a vertical state in the test position and in a horizontal state in the unloading position.

10. A method for testing water flow rate using a Hall effect sensor, characterized in that, The testing method includes the following steps: The Hall sensor to be tested is fixed in the positioning mechanism of the positioning component; Multiple regulating valves are adjusted to preset water flow positions, and control signals are sent to each solenoid valve in sequence through the main controller, so that the solenoid valves open or close in sequence, thereby controlling the water flow in different regulating pipes. Under the water flow conditions of each regulating pipe, the output signal of the Hall sensor is measured, and its performance parameters under different water flow rates are recorded. Based on the recorded performance parameters, evaluate whether the performance of the Hall sensor meets the requirements under different water flow conditions.

Images