A hall sensor measurement device applied to a capacitive pen

Abstract

The application discloses and provides a Hall sensor measuring device applied to a capacitance pen, which is simple in structure, accurate in detection and convenient in operation. The application comprises a mounting plate, a capacitance pen Hall sensor measuring carrier plate module is arranged on the mounting plate, a pressing plate module is further arranged on the mounting plate, a pressing block matched with the capacitance pen and an electromagnet magnetic field excitation module are arranged on a lifting plate of the pressing plate module; during measurement, the capacitance pen is placed on the capacitance pen Hall sensor measuring carrier plate module, the pressing plate module drives the lifting plate to descend, the pressing block on the lifting plate presses the capacitance pen, the electromagnet magnetic field excitation module also descends along with the lifting plate and approaches one end of the Hall sensor of the capacitance pen, the electromagnet magnetic field excitation module generates a magnetic field with a specific intensity, the sensing data of the Hall sensor of the capacitance pen are uploaded to an upper computer by the capacitance pen Hall sensor measuring carrier plate module, and then whether the Hall sensor of the capacitance pen is qualified is judged. The application is applied to the technical field of the Hall sensor measuring device applied to the capacitance pen.

Description

Technical Field

[0001] This invention relates to a Hall sensor measuring device, and more particularly to a Hall sensor measuring device applied to a capacitive pen. Background Technology

[0002] Capacitive pens, especially smart pens designed for tablets, have seen widespread adoption in consumer electronics in recent years. Capacitive pens utilize internal electronic structures to interact with the host device, with Hall effect sensors playing a crucial role. In smart pens, Hall switches are used for position detection, measuring changes in position over time to improve recognition accuracy and enhance user experience. Specifically, the Hall sensors inside capacitive pens are used for various functions, including pen tip levitation sensing, magnetic attachment detection, charging dock recognition, and mode switching. For example, when the pen cap rotates to different switch positions, the Hall switch detects the magnetic field strength in different directions and calculates the angle value to achieve precise switching between various modes. Capacitive pens are generally battery-powered, thus requiring high power consumption from the Hall sensors. Omnipolar low-power Hall switches are already available on the market, operating at 1.65~5.5V and with a current of only 3μA, suitable for battery-powered products. Furthermore, the limited space within capacitive pens necessitates extremely high precision in the size and layout of the Hall sensors.

[0003] In the manufacturing process of capacitive pens, after the Hall sensor is installed on the circuit board of the pen body, a comprehensive inspection is required to ensure its quality. The pen body is typically elongated (approximately 8-10mm in diameter and 150-180mm in length), with extremely limited internal circuit board space. A key technical challenge in the capacitive pen manufacturing and testing process is accurately determining whether the Hall sensor's response to a magnetic field, switching threshold, and output characteristics meet design specifications after the sensor is actually installed on the circuit board and subjected to precise magnetic field excitation. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a Hall sensor measuring device for capacitive pens that is simple in structure, accurate in detection, and easy to operate.

[0005] The technical solution adopted in this invention is as follows: This invention includes a mounting plate, on which a capacitive pen Hall sensor measurement carrier module is provided. The mounting plate also includes a pressure plate module. The lifting plate of the pressure plate module is equipped with a pressure block adapted to the capacitive pen and an electromagnet magnetic field excitation module. During measurement, the capacitive pen is placed on the capacitive pen Hall sensor measurement carrier module. The pressure plate module drives the lifting plate to descend, and the pressure block on the lifting plate presses down on the capacitive pen. The electromagnet magnetic field excitation module also descends with the lifting plate and approaches one end of the capacitive pen's Hall sensor. The electromagnet magnetic field excitation module generates a magnetic field of a specific intensity. The sensing data from the capacitive pen Hall sensor measurement carrier module is uploaded to a host computer to determine whether the capacitive pen's Hall sensor is qualified.

[0006] Furthermore, the mounting plate is provided with two sets of the capacitive pen Hall sensor measurement carrier plate modules, and each set of the capacitive pen Hall sensor measurement carrier plate modules is provided with an electromagnet magnetic field excitation module above it.

[0007] Furthermore, each set of capacitive pen Hall sensor measuring carrier plate modules is provided with a pressure plate module above it, and the electromagnet magnetic field excitation module is provided on the lifting plate.

[0008] Furthermore, the pressure plate module includes a Y-axis horizontal motion module disposed on the mounting plate and a Z-axis vertical motion module disposed on the Y-axis horizontal motion module; the lifting plate is disposed at the lifting end of the Z-axis vertical motion module; during measurement, the capacitive pen is placed on the capacitive pen Hall sensor measurement carrier module, and the capacitive pen is located in the X-axis horizontal direction.

[0009] Furthermore, the Y-axis horizontal motion module includes a slide rail mounted on the mounting plate, a slider slidably mounted on the slide rail, and front and rear cylinders mounted on the mounting plate and driving the slider to move; the Z-axis vertical motion module is mounted on the slider.

[0010] Furthermore, the Z-axis vertical motion module includes a lifting cylinder mounted on the slider, a lifting plate connected to the output end of the lifting cylinder, and a limiting block mounted on the side of the lifting cylinder; the lifting plate is provided with an upper limit component and a lower limit component, which are located above and below the limiting block, respectively.

[0011] Furthermore, both the upper limit component and the lower limit component are buffers, and a limit screw is also provided on the lifting plate above the limit block.

[0012] Furthermore, the electromagnet magnetic field excitation module includes an iron core disposed on the lifting plate, a coil wound on the iron core, and a current control unit electrically connected to the coil; the iron core is cylindrical, and the axis of the cylindrical iron core is in the vertical direction.

[0013] Furthermore, the Hall sensor measuring device applied to a capacitive pen also includes a control box, the mounting plate is disposed on the control box, the control box is provided with a control module, and the capacitive pen Hall sensor measuring carrier plate module, the pressure plate module, and the electromagnet magnetic field excitation module are all connected to the control module.

[0014] Furthermore, the mounting plate is equipped with a material sensor and a capacitive pen position sensor connected to the control module. The material sensor is used to detect whether there is a capacitive pen on the capacitive pen Hall sensor measuring carrier module, and the capacitive pen position sensor is used to detect whether the capacitive pen on the capacitive pen Hall sensor measuring carrier module is misaligned. The mounting plate is also equipped with a protective cover adapted to the pressure plate module. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention without the control box; Figure 3 This is a structural schematic diagram of the present invention from another perspective, excluding the control box; Figure 4 This is a structural schematic diagram of the pressure plate module; Figure 5 This is a schematic diagram of the structure of the capacitive pen Hall sensor measurement carrier board module.

[0016] Figure label: 1. Mounting plate; 2. Capacitive pen Hall effect sensor Measurement carrier plate module; 3. Pressure plate module; 4. Lifting plate; 8. Y-axis horizontal movement module; 5. Capacitive pen; 6. Pressure block; 7. Electromagnetic magnetic field excitation module; 9. Z-axis vertical motion module; 81. Slide rail; 82. Slider; 83 Front and rear cylinders; 91 Lifting cylinder; 92 Limit block; 93 Upper limit switch assembly; 94 Lower limit switch assembly; 95 Limit screw; 10. Control box; 11. Material sensor; 12. Capacitive pen position sensor; 13. Protective cover. Detailed Implementation

[0017] like Figures 1 to 5 As shown, in this embodiment, the present invention includes a mounting plate 1, on which a capacitive pen Hall sensor measurement carrier module 2 is mounted. A pressure plate module 3 is also mounted on the mounting plate 1. The lifting plate 4 of the pressure plate module 3 is equipped with a pressure block 6 adapted to the capacitive pen 5 and an electromagnet magnetic field excitation module 7. During measurement, the capacitive pen 5 is placed on the capacitive pen Hall sensor measurement carrier module 2. The pressure plate module 3 drives the lifting plate 4 to descend, and the pressure block 6 on the lifting plate 4 presses down on the capacitive pen 5. The electromagnet magnetic field excitation module 7 also descends with the lifting plate 4 and approaches one end of the Hall sensor of the capacitive pen 5. The electromagnet magnetic field excitation module 7 generates a magnetic field of a specific intensity. The sensing data of the Hall sensor of the capacitive pen 5 by the capacitive pen Hall sensor measurement carrier module 2 is uploaded to a host computer to determine whether the Hall sensor of the capacitive pen 5 is qualified.

[0018] In this embodiment, the mounting plate 1 serves as the basic support platform, providing rigid support for the capacitive pen Hall sensor measurement carrier module 2 and the pressure plate module 3, ensuring that the overall structure remains free from displacement and deformation during repeated movements, and guaranteeing the long-term consistency of the detection benchmark. The capacitive pen Hall sensor measurement carrier module 2 is specifically designed for the Hall sensor end of the capacitive pen 5, enabling signal acquisition and accurately capturing weak Hall voltage changes, providing high signal-to-noise ratio raw data to the host computer and avoiding environmental electromagnetic interference. The pressure plate module 3 and the lifting plate 4 constitute a precision linear motion mechanism, achieving synchronous and controllable downward pressing through mechanical linkage. This design ensures minimal positioning height error of the capacitive pen 5 in each test, greatly improving test repeatability and eliminating random deviations caused by manual placement. The pressure block 6 precisely matches the shape of the capacitive pen 5 and is covered with a soft material to achieve uniform pressing without damaging the pen body during the pressing process. The electromagnet magnetic field excitation module 7 moves synchronously with the lifting plate 4, precisely approaching the Hall sensor end while the pressure block 6 presses the capacitive pen 5, generating a controllable, stable, and directional excitation magnetic field. This design, by adjusting the current intensity, can simulate different working magnetic field environments, verifying the sensor's response capability under critical thresholds. The excitation magnetic field is a known strong signal, which can effectively cover stray magnetic fields in the environment, improve the detection signal-to-noise ratio, avoid wear and signal crosstalk caused by mechanical contact, and extend the equipment's lifespan. The Hall voltage collected by carrier module 2 is uploaded after analog-to-digital conversion. The system automatically determines whether it is qualified or not based on preset thresholds (such as voltage offset and response slope), realizing fully automated, traceable, and highly efficient batch testing.

[0019] For products where customers have high requirements for testing accuracy (such as requiring a magnetic field in the range of -12mT to -16mT, the testing device of this invention can be adjusted vertically in the Z direction and the accuracy is guaranteed to be ±0.1mT), this invention realizes dual-channel testing, and the dual-channel testing can also achieve individual testing or parallel testing between channels.

[0020] In this embodiment, the mounting plate 1 is provided with two sets of capacitive pen Hall sensor measurement carrier modules 2, and each set of capacitive pen Hall sensor measurement carrier modules 2 is provided with an electromagnet magnetic field excitation module 7 above it. The mounting plate 1 is provided with two sets of capacitive pen Hall sensor measurement carrier modules 2, which can simultaneously place two capacitive pens 5 to complete the detection in parallel, directly halving the detection time of a single batch, and adapting to the high cycle time requirements of the production line.

[0021] In this embodiment, the two workstations are integrated on the same mounting plate 1, sharing the same peripheral structure. This eliminates the need for additional equipment, significantly reducing the equipment footprint and lowering production line layout costs. Using the same mounting plate 1 as a reference carrier, the positioning reference of the two sets of capacitive Hall sensor measurement carrier modules 2 is unified. Combined with their respective corresponding electromagnet magnetic field excitation modules 7, the magnetic field excitation intensity and detection parameters of the two workstations are completely consistent, avoiding reference drift issues caused by repetitive operations at a single workstation. The two workstations can be set with different detection parameters and are compatible with Hall sensor detection from two different specifications of capacitive pens 5, eliminating the need for model changes and adjustments, thus improving the equipment's flexibility and adaptability.

[0022] In this embodiment, a pressure plate module 3 is provided above each set of capacitive pen Hall sensor measuring carrier module 2, and the electromagnet magnetic field excitation module 7 is disposed on the lifting plate 4. Each set of capacitive pen Hall sensor measuring carrier module 2 corresponds to a dedicated pressure plate module 3, which can independently control the lifting action of the corresponding station. The two stations can asynchronously complete the loading, testing, and unloading processes without synchronous waiting, further improving the production line flow efficiency. The electromagnet magnetic field excitation module 7 is integrated on the lifting plate 4 of the corresponding pressure plate module 3 and can descend synchronously with the pressure block 6, accurately fitting the Hall sensor end of the capacitive pen 5, ensuring that the excitation magnetic field of each station is completely consistent with the relative position of the measured part, eliminating the detection deviation between different stations. The two sets of pressure plate modules 3 can be independently set with downward stroke and pressing force parameters. Combined with the carrier module 2 of the corresponding station, it can simultaneously accommodate the clamping and testing of capacitive pens 5 of different shapes and sizes without changing the entire set of tooling, greatly reducing the cost of changeover and debugging. The single pressure plate module 3, lifting plate 4 and matching electromagnet magnetic field excitation module 7 are independent modules. When a fault occurs at a certain workstation, they can be disassembled and replaced separately without affecting the normal operation of another workstation, thus significantly improving the equipment utilization rate.

[0023] In this embodiment, the pressure plate module 3 includes a Y-axis horizontal motion module 8 mounted on the mounting plate 1 and a Z-axis vertical motion module 9 mounted on the Y-axis horizontal motion module 8; the lifting plate 4 is mounted on the lifting end of the Z-axis vertical motion module 9; during measurement, the capacitive pen 5 is placed on the capacitive pen Hall sensor measurement carrier module 2, and the capacitive pen 5 is located in the X-axis horizontal direction. The Y-axis horizontal motion module 8 of the pressure plate module 3 can drive the Z-axis vertical motion module 9 to move precisely in the Y direction, allowing the lifting plate 4 and the electromagnet magnetic field excitation module 7 to be precisely aligned with the Hall sensor end of the capacitive pen 5 placed in the X-axis direction without manual adjustment. The Y-axis horizontal motion module 8 and the Z-axis vertical motion module 9 form a dual-axis linkage, which can achieve micron-level position adjustment, ensuring that the relative distance and alignment angle between the electromagnet magnetic field excitation module 7 and the Hall sensor of the capacitive pen 5 are completely consistent, avoiding fluctuations in detection data caused by alignment deviation. Leveraging the travel coverage of the Y-axis horizontal motion module 8, a single pressure plate module 3 can be adapted to multiple capacitive pen Hall sensor measurement carrier modules 2 arranged along the X-axis. This eliminates the need to configure a separate set of pressure plate modules 3 for each workstation, significantly reducing equipment manufacturing costs and structural redundancy. Both dual-axis modules are standardized industrial motion modules, allowing for rapid parameter changes for different models of capacitive pens 5 via preset motion paths on a host computer, without requiring replacement of mechanical tooling and significantly shortening the production line debugging cycle.

[0024] like Figure 4 As shown, in this embodiment, the Y-axis horizontal motion module 8 includes a slide rail 81 mounted on the mounting plate 1, a slider 82 slidably mounted on the slide rail 81, and front and rear cylinders 83 mounted on the mounting plate 1 and driving the slider 82. The Z-axis vertical motion module 9 is mounted on the slider 82. The slide rail 81 and slider 82 of the Y-axis horizontal motion module 8 form a high-rigidity linear guide pair, which can stably bear the overall weight of the Z-axis vertical motion module 9. There is no obvious shaking or deformation during operation, ensuring the straightness of the Y-axis movement. The front and rear cylinders 83 directly drive the slider 82 to complete the Y-axis reciprocating motion, eliminating intermediate transmission components such as lead screws and synchronous belts. The action response speed is greatly improved, and the station alignment can be completed quickly, shortening the detection cycle of a single capacitive pen 5. The entire Y-axis motion component consists only of the slide rail 81, slider 82, and front and rear cylinders 83. The number of parts is small and the integration is high. Compared with servo motor drive solutions, the purchase and maintenance costs are lower, making it suitable for the cost-effective transformation needs of automated testing equipment. The front and rear cylinders 83, together with the end limit structures, can precisely control the stopping position of the slider 82, ensuring that the Z-axis vertical motion module 9 mounted on the slider 82 can stop at the preset precise position every time, so that the relative position of the electromagnet magnetic field excitation module 7 and the Hall sensor end of the capacitive pen 5 is completely unified, eliminating the detection error caused by the alignment deviation.

[0025] like Figure 4 As shown, in this embodiment, the Z-axis vertical motion module 9 includes a lifting cylinder 91 mounted on the slider 82, a lifting plate 4 connected to the output end of the lifting cylinder 91, and a limiting block 92 mounted on the side of the lifting cylinder 91. The lifting plate 4 is equipped with an upper limit component 93 and a lower limit component 94, which are located above and below the limiting block 92, respectively. The lifting cylinder 91 drives the lifting plate 4 to complete vertical movement. By cooperating with the upper limit component 93 and the lower limit component 94 with the limiting block 92 on the side of the lifting cylinder 91, the upper and lower limit positions of the lifting plate 4 can be precisely locked, ensuring a completely consistent downward stroke and preventing excessive pressure from the pressure block 6 from damaging the capacitive pen 5. The dual-limit structure effectively absorbs the impact vibration at the end of the lifting cylinder 91's movement, eliminating positional deviation caused by motion impact. This ensures that the electromagnet magnetic field excitation module 7 accurately stops at the preset excitation height each time, maintaining a constant relative distance between the magnetic field and the Hall sensor of the capacitive pen 5, thus improving the repeatability of the detection data. The upper limit component 93 and the lower limit component 94 can be flexibly adjusted in installation position to quickly adapt to the downward stroke requirements of capacitive pens 5 with different thicknesses, without the need to replace other mechanical parts, significantly shortening product changeover and debugging time. The dual mechanical limits provide robust protection, preventing the lifting cylinder 91 from overtravel due to air circuit malfunctions or signal abnormalities, and preventing hard collisions between the lifting plate 4 and surrounding components, effectively extending the service life of the equipment's core moving parts.

[0026] In this embodiment, both the upper limit component 93 and the lower limit component 94 are buffers, and a limit screw 95 is also provided on the lifting plate 4 above the limit block 92. The upper limit component 93 and the lower limit component 94, as buffers, can significantly absorb the impact force when the lifting cylinder 91 drives the lifting plate 4 to its upper and lower limit positions, preventing hard collisions that could damage the capacitive pen 5 and the electromagnet magnetic field excitation module 7, thus reducing the equipment failure rate. The limit screw 95 on the lifting plate 4 can work with the buffer to perform secondary limit calibration, precisely limiting the minimum downward pressure height of the lifting plate 4, ensuring that the pressure of the pressure block 6 on the capacitive pen 5 is always within a safe range, preventing loosening due to insufficient pressure or damage to the pen body due to excessive pressure. By fine-tuning the screw depth of the limit screw 95, the downward stroke requirements of capacitive pens 5 with different thicknesses can be quickly adapted without modifying other structures, significantly shortening the product changeover and debugging cycle. The flexible buffer of the shock absorber and the rigid limit screw 95 form a double protection. Even if the air circuit of the lifting cylinder 91 is abnormal, it can completely prevent the lifting plate 4 from overtravel and ensure the long-term stable operation of the whole device.

[0027] In this embodiment, the electromagnet magnetic field excitation module 7 includes an iron core disposed on the lifting plate 4, a coil wound on the iron core, and a current control unit electrically connected to the coil. The iron core is cylindrical, with its axis in the vertical direction. The current control unit of the electromagnet magnetic field excitation module 7 can precisely adjust the magnitude of the current flowing into the coil, achieving continuous and controllable output of magnetic field strength based on Ampere's circuital law, adapting to the calibration and detection requirements of Hall sensors of different specifications of capacitive pens 5. When the cylindrical iron core is magnetized by the coil, the magnetic field generated by the coil can be greatly enhanced. Compared with a coreless structure, sufficient excitation magnetic field can be obtained with lower power consumption, while reducing leakage magnetic interference. The cylindrical iron core is arranged vertically, forming a uniform axial magnetic field perpendicularly downward on the end face facing the Hall sensor of the capacitive pen 5. The magnetic field lines are concentrated and output along the axis of the iron core, avoiding magnetic field deviation and ensuring that the magnetic field direction and range of action are completely consistent for each detection. This modular structure can be quickly adapted to the detection needs of various capacitive pens by replacing coils with different numbers of turns and adjusting current parameters. It has a simple and durable structure and good magnetic field output consistency under long-term operation.

[0028] In this embodiment, the Hall sensor measuring device for a capacitive pen also includes a control box 10. The mounting plate 1 is mounted on the control box 10, and a control module is housed within the control box 10. The capacitive pen Hall sensor measuring carrier module 2, the pressure plate module 3, and the electromagnet magnetic field excitation module 7 are all connected to the control module. The mounting plate 1 is directly mounted on the control box 10, integrating all actuators and the control module into one unit, eliminating the need for redundant wiring in a distributed layout. The overall structure of the device is compact, facilitating transport and deployment on the production line. The control module within the control box 10 can uniformly schedule the action sequence of the capacitive pen Hall sensor measuring carrier module 2, the pressure plate module 3, and the electromagnet magnetic field excitation module 7, achieving fully automated closed-loop operation of the entire process from material loading, clamping, magnetic field excitation, to data acquisition. No manual step-by-step operation is required, significantly improving detection efficiency. The signal lines of all controlled components are connected to the control module within the control box 10, avoiding the messy wiring and signal interference problems caused by distributed wiring. Subsequent troubleshooting and program upgrades can be completed directly at the control box 10, significantly reducing maintenance costs. Under the centralized control architecture, the data collected and operating status of each module can be preprocessed directly within the control module before being uploaded to the host computer, reducing signal loss and interference over long distances and ensuring the stability and consistency of the detection data.

[0029] In this embodiment, the mounting plate 1 is provided with a material sensor 11 and a capacitive pen position sensor 12 connected to the control module. The material sensor 11 is used to detect whether there is a capacitive pen 5 on the capacitive pen Hall sensor measuring carrier module 2, and the capacitive pen position sensor 12 is used to detect whether the capacitive pen 5 on the capacitive pen Hall sensor measuring carrier module 2 is misaligned. The mounting plate 1 is also provided with a protective cover 13 adapted to the pressure plate module 3.

[0030] In this embodiment, the material sensor 11 can detect in real time whether a capacitive pen 5 is placed on the carrier plate module 2 measured by the capacitive pen Hall sensor. Only after the material is detected to be in place will the control module trigger the subsequent pressing action of the pressure plate module 3, avoiding invalid actions caused by no-load operation and greatly improving the operating efficiency of the equipment. The capacitive pen position sensor 12 can accurately identify whether the capacitive pen 5 is misaligned. Once the placement position is detected to be off, the control module will directly trigger an alarm and pause the process, avoiding problems such as the pressure block 6 damaging the pen body and the magnetic field excitation module 7 being misaligned due to the misalignment of the capacitive pen 5, and ensuring the validity of the detection data. The protective cover 13 adapted to the pressure plate module 3 can completely cover the moving Y-axis horizontal direction movement module 8 and Z-axis vertical direction movement module 9, preventing operators from accidentally touching the moving parts and causing safety hazards. At the same time, it blocks external dust and foreign objects from entering the moving parts, extending the service life of core components such as the slide rail 81 and the slider 82. Material sensor 11 and capacitive pen position sensor 12 are directly connected to the control module in the control box 10, which can synchronize the material status and position information to the whole process logic in real time, realize the fully closed-loop automated operation of "material arrival - position verification - automatic detection", and further improve the automation level of the production line.

[0031] Although the embodiments of the present invention are described with reference to actual solutions, they do not constitute a limitation on the meaning of the present invention. Modifications to the embodiments and combinations with other solutions based on this specification will be obvious to those skilled in the art.

Claims

1. A Hall sensor measuring device for use in a capacitive pen, comprising a mounting plate (1), characterized in that: The mounting plate (1) is provided with a capacitive pen Hall sensor measurement carrier module (2), and the mounting plate (1) is also provided with a pressure plate module (3). The lifting plate (4) of the pressure plate module (3) is provided with a pressure block (6) adapted to the capacitive pen (5) and an electromagnet magnetic field excitation module (7). During measurement, the capacitive pen (5) is placed on the capacitive pen Hall sensor measurement carrier module (2). The pressure plate module (3) drives the lifting plate (4) to descend. The pressure block (6) on the lifting plate (4) presses down the capacitive pen (5). The electromagnet magnetic field excitation module (7) also descends with the lifting plate (4) and approaches the Hall sensor end of the capacitive pen (5). The electromagnet magnetic field excitation module (7) generates a magnetic field of a specific intensity. The sensing data of the Hall sensor of the capacitive pen (5) by the capacitive pen Hall sensor measurement carrier module (2) is uploaded to the host computer, and then it is determined whether the Hall sensor of the capacitive pen (5) is qualified.

2. The Hall sensor measuring device for a capacitive pen according to claim 1, characterized in that: The mounting plate (1) is provided with two sets of capacitive pen Hall sensor measurement carrier plate modules (2), and each set of capacitive pen Hall sensor measurement carrier plate modules (2) is provided with an electromagnet magnetic field excitation module (7) above it.

3. The Hall sensor measuring device for a capacitive pen according to claim 2, characterized in that: Each set of capacitive pen Hall sensor measuring carrier plate module (2) is provided with a pressure plate module (3) above it, and the electromagnet magnetic field excitation module (7) is provided on the lifting plate (4).

4. A Hall sensor measuring device for a capacitive pen according to any one of claims 1 to 3, characterized in that: The pressure plate module (3) includes a Y-axis horizontal motion module (8) and a Z-axis vertical motion module (9) set on the mounting plate (1); the lifting plate (4) is set at the lifting end of the Z-axis vertical motion module (9); during measurement, the capacitive pen (5) is placed on the capacitive pen Hall sensor measuring carrier plate module (2), and the capacitive pen (5) is located in the X-axis horizontal direction.

5. A Hall sensor measuring device for a capacitive pen according to claim 4, characterized in that: The Y-axis horizontal motion module (8) includes a slide rail (81) mounted on the mounting plate (1), a slider (82) slidably mounted on the slide rail (81), and front and rear cylinders (83) mounted on the mounting plate (1) and driving the slider (82) to move; the Z-axis vertical motion module (9) is mounted on the slider (82).

6. The Hall sensor measuring device for a capacitive pen according to claim 4, characterized in that: The Z-axis vertical motion module (9) includes a lifting cylinder (91) mounted on the slider (82), a lifting plate (4) connected to the output end of the lifting cylinder (91), and a limiting block (92) mounted on the side of the lifting cylinder (91). The lifting plate (4) is provided with an upper limit component (93) and a lower limit component (94), which are located above and below the limiting block (92), respectively.

7. A Hall sensor measuring device for a capacitive pen according to claim 6, characterized in that: The upper limit component (93) and the lower limit component (94) are both buffers, and a limit screw (95) is also provided on the lifting plate (4) above the limit block (92).

8. The Hall sensor measuring device for a capacitive pen according to claim 1, characterized in that: The electromagnet magnetic field excitation module (7) includes an iron core disposed on the lifting plate (4), a coil wound on the iron core, and a current control unit electrically connected to the coil; the iron core is cylindrical, and the axis of the cylindrical iron core is in the vertical direction.

9. A Hall sensor measuring device for use in a capacitive pen according to claim 1, characterized in that: The Hall sensor measuring device for a capacitive pen also includes a control box (10), the mounting plate (1) is mounted on the control box (10), the control box (10) contains a control module, and the capacitive pen Hall sensor measuring carrier plate module (2), the pressure plate module (3), and the electromagnet magnetic field excitation module (7) are all connected to the control module.

10. A Hall sensor measuring device for a capacitive pen according to claim 9, characterized in that: The mounting plate (1) is provided with a material sensor (11) and a capacitive pen position sensor (12) connected to the control module. The material sensor (11) is used to detect whether there is a capacitive pen (5) on the capacitive pen Hall sensor measuring carrier module (2). The capacitive pen position sensor (12) is used to detect whether the capacitive pen (5) on the capacitive pen Hall sensor measuring carrier module (2) is misaligned. The mounting plate (1) is also provided with a protective cover (13) that is compatible with the pressure plate module (3).

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