CN219162905U - Displacement measurement function display device based on magnetic sensor - Google Patents

Abstract

The utility model discloses a displacement measurement function display device based on a magnetic sensor, which comprises: the bracket is provided with an interface connected with a circuit board with a magnetic sensor; the guide rail is a linear guide rail and is arranged on the bracket, and the slide block is assembled on the guide rail and can slide left and right along the guide rail; and the magnet is arranged on the sliding block and moves back and forth relative to the guide rail along with the sliding block, and the movement displacement information of the magnet can be detected by the magnetic sensor. The utility model can simply and clearly show the displacement measurement function of the magnetic sensor.

Description

Displacement measurement function display device based on magnetic sensor

Technical Field

The utility model relates to the technical field of Hall sensors, in particular to a displacement measurement function display device based on a magnetic sensor.

Background

Hall effect is one of the magnetoelectric effects, which was found in 1879 when studying the conductive mechanism of metals. It was found that semiconductors, conductive fluids, etc. have such effects, and that the hall effect of semiconductors is much stronger than that of metals, and various hall devices made by using such phenomena are widely used in industrial automation technology, detection technology, information processing, etc.

The three-axis hall sensor can measure magnetic fields in X, Y and Z axes. The Hall effect sensor is a common method for measuring displacement in the system, has the advantages of high precision, high consistency and high reliability, and can accurately sense the information of the movement and displacement of an object in the system.

When a worker of a hall sensor introduces a function and an application of a product to a customer or related personnel, for example, introduces a displacement measurement function of the hall sensor, the worker usually adopts a means of dictating, PPT and small video to develop, but the worker is often limited by whether the product introducer understands the product in place or not, or whether the worker expresses the capability of the product in good or bad, so that the means of dictating, PPT and video have limitations. If a mechanical structure specially used for displaying the function of the Hall sensor can be designed, the displacement measurement function of the Hall sensor can be well displayed, and a vast customer group and related personnel can acquire the most visual information about the function of the product.

Therefore, there is a need for a displacement measurement function display device based on a magnetic sensor.

Disclosure of Invention

The utility model aims to provide a displacement measurement function display device based on a magnetic sensor.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows: provided is a displacement measurement function display device based on a magnetic sensor, including: a displacement measurement function presentation device based on a magnetic sensor, comprising:

the bracket is provided with an interface connected with a circuit board with a magnetic sensor;

the guide rail is a linear guide rail and is arranged on the bracket, and the slide block is assembled on the guide rail and can slide left and right along the guide rail;

the magnet is arranged on the sliding block and moves back and forth relative to the guide rail along with the sliding block, the movement displacement information of the magnet can be detected by the magnetic sensor, and the magnetization direction of the magnet is perpendicular to the movement direction of the sliding block.

The left end and the right end of the support are respectively provided with a first boss and a second boss in a protruding mode, and the left end and the right end of the guide rail are respectively fixed on the first boss and the second boss.

The magnetic force sensor further comprises a first limiting block and a second limiting block, wherein the first limiting block and the second limiting block can be movably arranged on the guide rail in a penetrating mode and are respectively arranged on two sides of the magnet.

The support is provided with a section of panel structure parallel to the extending direction of the guide rail, a section of scale part is arranged on the panel structure, and the scale part is used for indicating displacement information of the sliding block on the guide rail.

The scale part comprises a zero point value, a first scale part arranged on the left side of the zero point value and a second scale part arranged on the right side of the zero point value, and the first scale part and the second scale part are respectively provided with a scale value.

The sliding block is provided with a tip, and the tip points to the scale part.

The magnetic sensor is characterized in that a groove with a downward opening is formed in the center of the lower part of the sliding block, the magnet is embedded in the groove and is a cylindrical magnet, the magnet moves back and forth along the guide rail above the magnetic sensor along with the sliding block, and when the magnet is located right above the magnetic sensor, the sliding displacement of the magnet on the guide rail is zero.

The interface is a clamping groove formed in the lower portion of the support, the circuit board is provided with a clamping portion which enters the clamping groove, the clamping portion is matched with the clamping groove to enable the support to be connected with the circuit board, and the magnetic sensor is arranged on the clamping portion.

The lower surface of draw-in groove has seted up blind groove, be equipped with the inlay nut in the blind groove, pass through the screw through-hole of predetermineeing on the block portion with inlay nut cooperation, and will the circuit board locking is in the draw-in groove.

The circuit board is provided with an interface unit for communicating with an external device.

The utility model has the beneficial effects that:

1. the sliding block slides left and right on the guide rail, and the sliding block drives the magnet to generate displacement relative to the Hall sensor module, so that the Hall sensor module can sense the moving state and real-time displacement information of an object in the system accurately and intuitively;

2. through repeated movements of the slide block on the guide rail, the Hall effect sensor can show the advantages of high consistency, high precision and high reliability of the displacement measuring function.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

FIG. 1 is a schematic diagram illustrating one embodiment of a magnetic sensor based displacement measurement function presentation device.

Fig. 2 is another view of the magnetic sensor-based displacement measurement function presentation device shown in fig. 1.

Fig. 3 is a further view of the magnetic sensor based displacement measurement function presentation device shown in fig. 1.

Fig. 4 is a further view of the magnetic sensor based displacement measurement function presentation device shown in fig. 1.

Fig. 5 is a schematic diagram showing the slider at the zero value.

Fig. 6 is a schematic view of the slider at the second scale portion.

Fig. 7 is a schematic view of one embodiment of a stent.

Fig. 8 is another angular view of the bracket shown in fig. 7.

FIG. 9 is a schematic view of an embodiment of a rail.

FIG. 10a is a schematic diagram illustrating one embodiment of a slider.

Fig. 10b is another angular view of the slider shown in fig. 10 a.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present utility model.

In the following, the terms "comprises", "comprising", "having" and their cognate terms as used in various embodiments of the utility model are intended to refer only to a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be taken to first exclude the presence of or increase the likelihood of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.

Furthermore, the terms "first," "second," "third," and the like, as used herein, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the utility model belong. The terms (such as those defined in commonly used dictionaries) will be interpreted as having a meaning that is the same as the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in connection with the various embodiments of the utility model.

The magnetic sensor includes various types, for example: magneto-resistive effect sensors, geomagnetic sensors, hall sensors, etc., are described by taking hall sensor modules as examples in the present utility model.

Such as energizing a block of semiconductor material and exposing the semiconductor material to a magnetic field. The magnetic force lines are applied to the semiconductor material, so that charge carriers, electrons and holes in the conductive material are deflected to the other side of the semiconductor plate, and a potential difference is generated. The potential difference is processed to obtain information such as the magnitude and displacement of the magnetic field. If the hall effect sensor is sensitive to magnetic fields in only one direction, it is difficult to obtain accurate displacement information once the hall sensor is soldered to the PCB and given the magnetic field properties are not unidirectional. Three-axis Hall effect sensors are thus developed to measure the magnitude or displacement of X, Y and Z-axis magnetic fields.

As described in the background art, when a worker of a manufacturer of a hall sensor introduces a function and an application of a product to a customer or a related person, for example, when introducing a displacement measurement function of the hall sensor, the worker usually adopts means of dictating, PPT and small video to develop, but the worker often is limited by whether the product introducer understands the product in place or whether the product introducer expresses the good or bad of the capability of the product, so that the means of dictating, PPT and video have limitations. If a mechanical structure specially used for displaying the function of the Hall sensor can be designed, the displacement measurement function of the Hall sensor can be well displayed, and a vast customer group and related personnel can acquire the most visual information about the function of the product. Based on this, the applicant has filed the present application.

Referring to fig. 1-4, wherein fig. 1 and 2 are views of the present utility model from different angles above the present utility model, and fig. 3 and 4 are views of the present utility model from different angles below the present utility model.

The present utility model provides a displacement measurement function display device 100 based on a magnetic sensor, which is used for including:

a bracket 1 provided with an interface for connection with a circuit board having a magnetic sensor;

the guide rail 2 is a linear guide rail and is arranged on the bracket 1, and the slide block 3 is assembled on the guide rail 2 and can slide left and right along the guide rail 2;

a magnet 4, the magnet 4 is mounted on the slider 3 and reciprocates with the slider 3 relative to the guide rail 2, and the magnetization direction of the magnet 4 is perpendicular to the movement direction of the slider 3.

In all the embodiments of the present utility model, the magnetic sensor is taken as the hall sensor module 5 as an example, where the hall sensor module 5 is fixed relative to the guide rail 2 during actual measurement and is used for detecting the displacement information of the magnet 4 relative to the hall sensor module 5;

in addition, the external device further comprises a circuit board 6, the hall sensor module 5 is assembled on the circuit board 6, and is used for receiving and amplifying the displacement information detected by the hall sensor module 5, analyzing and processing the displacement information and then sending the displacement information to the display module for display.

It should be noted that the bracket 1 is used for providing the guide rail 2, wherein the preferred embodiment of the guide rail 2 is a linear guide rail, and the guide rail 2 is integrally formed with the bracket 1, or is fixed to the bracket 1 by means of screws, welding, or the like. The purpose of the bracket 1 is thus to mount and fix the guide rail 2 such that the guide rail 2 is in a stationary state relative to the bracket 1.

In the actual use process, in order to better enable the sliding block 3 to keep a static posture in a natural state, the measurement precision is improved, a better display effect is ensured, and the guide rail 2 and the sliding block 3 are both in a horizontal placement state.

In a specific design, referring to fig. 9, 10a, and 10b, the sliding block 3 slides left and right along the guide rail 2, and the guide rail 2 may be in a rectangular shape as shown in fig. 9, or may be in a shape of a hexagonal prism, an eight prism, a cylinder, or the like, which is not particularly limited herein. The slider 3 is designed to be a cuboid, column, or sphere structure, which is not limited herein, and needs to be provided with a structure connected to the guide rail 2, and the structure can be slidably matched with the guide rail 2, for example, may be a chute, and slidably pass through the guide rail 2 through the chute, or be a clamping pulley block, and be clamped on the guide rail 2 through the clamping pulley block. Specifically, in this embodiment: as shown in fig. 10a and 10b, a through groove 31 is designed to adapt to the shape of the guide rail 2, and is disposed through the two opposite sides of the slider 3, the through groove 31 can just pass through the guide rail 2, that is, when the guide rail 2 is in a cuboid shape as shown in fig. 9, the through groove 31 is a rectangular groove as shown in fig. 10a and 10b, which is matched with the guide rail 2, so that the slider 3 can slide on the guide rail 2 better through the through groove 31, and can maintain a stable static state.

The magnet 4 is detachably mounted on the slider 3, and the structure of the magnet 4 is generally selected from a cylinder, a hexagonal prism, a square, a rectangular parallelepiped, and the like, which are not particularly limited herein. The magnetization direction of the magnet 4 is perpendicular to the movement direction of the slider 3, that means that the plane where the movement direction of the slider 3 is located is perpendicular to the magnetization direction of the magnet 4, when the slider 3 moves, the magnetic field intensity of the magnet 4 generated by the hall sensor module 5, which can be most effectively detected by the hall sensor module 5, is in variation, and further, the displacement information of the magnet 4 is obtained through analysis and processing through the variation of the magnetic field intensity, so that the requirement of the three-axis hall sensor on displacement detection is met.

Since the slider 3 moves relative to the guide rail 2, the hall sensor module 5 is fixed relative to the guide rail 2, and the displacement information of the magnet 4 can be detected by the hall sensor module 5, that is, the magnitude of the sliding displacement of the magnet 4 needs to be within the detection range of the hall sensor module 5.

Since the hall voltage changes with the change of the magnetic field intensity, the stronger the magnetic field, the higher the hall voltage, the weaker the magnetic field, and the lower the hall voltage, but in practice, the hall voltage value is very small, usually only a few millivolts, and the hall voltage value needs to be amplified before further processing. The signal output by the hall sensor module 5 is a voltage signal, and after the voltage signal output by the hall sensor module 5 is received by the circuit board 6, the voltage signal needs to be amplified to be analyzed and processed to obtain the corresponding relative displacement information of the sliding block 3 (or the magnet 4). Therefore, the circuit board 6 needs to be provided with a voltage amplifying circuit, which is a conventional technical means and will not be described again.

The displacement information detected by the hall sensor module 5 is displayed on the display module in real time while the magnet 4 moves together with the slider 3, so that the function of measuring displacement of the hall sensor module can be displayed.

In one embodiment, referring to fig. 1, 2, 7 and 9, the left and right ends of the bracket 1 are respectively provided with a first boss 11 and a second boss 12, and the left and right ends of the guide rail 2 are respectively fixed on the first boss 11 and the second boss 12. The length between the first boss 11 and the second boss 12 is just used to set the guide rail 2. And the first boss 11 and the second boss 12 are outwards protruded far from the body of the bracket 1, so that enough movable space is reserved for the sliding block 3 when the sliding block 3 is mounted on the guide rail 2.

In this embodiment, the first boss 11 and the second boss 12 are integrally formed with the bracket 1, and in addition, the first boss 11 and the second boss 12 may be connected to the bracket 1 by means of screws, jogging, etc., while for better assembling the slider 3, the left and right ends of the guide rail 2 are connected to the first boss 11 and the second boss 12 by means of locking by means of screws 21, 22. More specifically, referring to fig. 7, the ends of the first boss 11 and the second boss 12 are respectively provided with screw holes 111 and 112, and referring to fig. 9, the left and right ends of the guide rail 2 are provided with screw holes 23 and 24 in a matching manner at corresponding positions, so that the screw 21 passes through the screw hole 23 on the guide rail 2 to be locked to the screw hole 111 on the first boss 11, and the screw 22 passes through the screw hole 24 on the guide rail 2 to be locked to the screw hole 112 on the first boss 11, thereby achieving the effect of fixedly connecting the guide rail 2 with the bracket. In addition, the connecting structure can be disassembled conveniently.

Referring to fig. 5, the magnetic assembly further includes a first limiting block 7 and a second limiting block 8, and the first limiting block 7 and the second limiting block 8 are movably disposed on the guide rail 2 in a penetrating manner, and are respectively disposed on two sides of the magnet 4.

The first limiting block 7 and the second limiting block 8 are arranged so that the sliding block 3 can be limited to move, or the sliding block 3 can be marked. The first limiting block 7 and the second limiting block 8 have two functions, firstly, detection can be ensured within a distance range of +/-20 mm, the positions of the first limiting block 7 and the second limiting block 8 are adjusted before use, then the tip-like part 32 of the sliding block 3 is aligned with a structural member graduated scale, and then the sliding block 3 is moved. The second is that the accuracy of linear displacement detection has certain relation with the size of the magnet and the displacement detection range, the accuracy of detecting + -10 mm is far greater than the accuracy of detecting + -20 mm, and the sliding block 3 can be limited within + -10 mm by using the first limiting block 7 and the second limiting block 8, so that the observation accuracy is improved.

In the embodiment shown in fig. 1, 2 and 7, the bracket 1 has a panel structure 13 parallel to the extending direction of the guide rail 2, and a scale portion 14 is provided on the panel structure 13, where the scale portion 14 is used to indicate displacement information of the slider 3 on the guide rail 2.

In this embodiment, preferably, the panel structure 13 may be a flat surface structure, the scale portion 14 may be etched on the panel structure 13, the scale portion 14 is a tool for measuring a length, specifically, in this embodiment, the scale portion 14 is information indicating a displacement of the slider 3 on the guide rail 2, specifically, physical displacement information, and a user can intuitively read the displacement information of the slider 3 from the scale portion 14, so as to provide a reference for the displacement information of the slider 3 on the guide rail 2 measured by the hall sensor module 5.

Referring to fig. 7, the scale portion 14 includes a zero point value 141, a first scale portion 141 disposed on the left side of the zero point value 140, and a second scale portion 142 disposed on the right side, wherein the first scale portion 141 and the second scale portion 142 are provided with scale values.

By providing the zero point value 140 and the first graduation portion 141 provided on the left side and the second graduation portion 142 provided on the right side of the zero point value 140, it is possible to intuitively indicate real-time physical displacement information when the slider 3 is stopped at the zero point value 140 and slid leftwards or rightwards.

Referring to fig. 7, the minimum scale of the scale values at the first and second scale parts 141 and 142 is millimeter. Through the usual application field of the hall sensor module 5, the minimum unit of the displacement information detected by the hall sensor module 5 is in millimeter or 0.1 millimeter, so that the requirements of the hall sensor module 5 on displacement measurement in most application scenes can be met.

In one embodiment, referring to fig. 2, 5 and 6, the maximum measuring range of the first graduation unit 141 and the second graduation unit 142 is 20 mm. The maximum measuring ranges of the first scale portion 141 and the second scale portion 142 are set to be 20mm, so that the displacement measurement requirements of the hall sensor module 5 in most application scenes can be met. Fig. 2 is a schematic diagram showing the maximum range of the sliding block 3 at the first scale portion, wherein the scale value at the leftmost side of the first scale portion 141 is-20 mm (for better distinction, the zero point value 140 is defined as a negative scale value on the left, and the zero point value 140 is defined as a positive scale value on the right), and fig. 5 is a schematic diagram showing the sliding block 3 at the zero point value, wherein the sliding block 3 is at the zero point value, and the initial position is set at the zero point value; fig. 6 is a schematic view of the maximum range of the sliding block 3 at the second scale portion, and fig. 6 shows that the scale value at the rightmost side of the second scale portion 142 is 20 mm.

In practical applications, the hall sensor module 5 is designed below or above the magnet. In particular to the embodiment shown in fig. 1, 2 and 5, the hall sensor module 5 is designed below the magnet 4. When the magnet 4 is located right above the hall sensor module 5, the magnetic field intensity sensed by the magnet 4 is strongest, and when the magnet 4 moves to two sides, the magnetic field intensity sensed by the magnet 4 is gradually weakened, so the scale portion is set such that the scale portion 14 includes a zero point value 141 located at the middle and a first scale portion 141 located at the left side of the zero point value 140, so that the displacement detection range of the hall sensor module 5 can be improved as much as possible, and the accuracy of detection can be improved.

In one embodiment, referring to fig. 1, 2, 10a, 10b, the slider 3 is provided with a tip portion 32, and the tip portion 32 is directed to the scale portion. By providing the tip, the displacement information of the slider 3 can be better indicated on the scale portion 14, that is, the tip 32 is as close to the scale value on the scale portion 14 as possible, so that reading is more convenient, and reading errors caused by naked eye limitation can be reduced.

Referring to the above application cases 5 and 6, other scale values within the range of the second scale portion 142 may be measured to show the measuring displacement function, accuracy and high repeatability of the hall sensor module 5.

In one embodiment, referring to fig. 10a and 10b, a recess 33 with a downward opening is formed at the center of the lower portion of the slider 3, the magnet 4 is embedded in the recess 33, and the magnet 4 is a cylindrical magnet, the magnet 4 reciprocates along the guide rail 2 with the slider above the hall sensor module 5, and when the magnet 4 is located directly above the hall sensor module 5, the sliding displacement of the magnet 4 on the guide rail 2 is zero. The provision of the recess 33 allows for a more rapid replacement of the magnet 4 for detection of different magnets 4 and can be used to verify whether the magnet 4 is producing a desired magnetic field strength.

Referring to fig. 2, 3, 4 and 7, a clamping groove 15 is formed in the lower portion of the bracket 1, the circuit board 6 has a clamping portion 61 that enters the clamping groove 15, the clamping portion 61 cooperates with the clamping groove 15 to connect the bracket 1 with the circuit board 6, and the hall sensor module is disposed on the clamping portion.

Specifically, in practical design, the whole of the bracket 1 is in a rectangular plate shape, the scale portion 14 is disposed at the center of the upper portion of the bracket 1, the clamping groove 15 is disposed at the center of the lower portion of the bracket 1, the hall sensor module 5 is welded at the center of the clamping portion 61 and is located below the guide rail 2, and when the slider 3 slides to the zero point 140 of the scale portion 14, the magnet 4 is located just above the hall sensor module 5, and at this time, the displacement of the magnet 4 (or the slider 3) detected by the hall sensor module 5 is set to 0.

Referring to the embodiment shown in fig. 4 and 8, a blind groove is formed in the lower surface of the clamping groove 15, a mosaic nut 16 is disposed in the blind groove, and a screw 17 passes through a screw through hole preset in the clamping portion 61 to cooperate with the mosaic nut 16, so as to lock the circuit board 6 in the clamping groove 15.

The clamping groove 15 is integrally formed in the bracket 1, so that by providing the insert nut 16, it is ensured that the screw 17 can say that the clamping portion 61 is locked on the clamping groove 15, and in one embodiment, the number of blind grooves is two, and one insert nut 16 is provided in each blind groove.

In an embodiment, the circuit board 6 is provided with an interface unit for communication with an external device. In this embodiment, the communication interface unit may be a wired interface unit, for example, a USB port, a Mini-USB port, a T-pec port, or a wireless communication interface unit, for example, a bluetooth unit, etc. The displacement information detected by the hall sensor module 5 is transmitted to an external device, such as a computer, through the interface unit, and is further processed through the computer.

In this embodiment, the displacement information detected by the hall sensor module 5 is a voltage signal, and after being amplified by the amplifying circuit of the circuit board 6, the signal is sent to an external device for processing and displaying by the wired interface unit, and then the signal is matched with the physical displacement indicated by the sliding block 3 at the scale portion 14, so as to verify whether the displacement information measured by the hall sensor module 5 is accurate or not, or verify that the magnet 4 can generate a magnetic field strength which is satisfactory.

In addition, if the communication interface unit is a wireless communication interface unit, the communication interface unit needs to be sent to an external device for processing and displaying through analog-to-digital conversion and then through a Bluetooth unit, and then is matched with the physical displacement indicated by the sliding block 3 at the scale portion 14 to verify whether the displacement information measured by the hall sensor module 5 is accurate or not or whether the magnet 4 is qualified or not.

In addition, a central processing unit and a display module can be arranged on the circuit board 6, and the circuit board is displayed on the display module after being analyzed and processed by the central processing unit, and then the circuit board is matched with the physical displacement indicated by the sliding block 3 at the scale part 14 so as to verify whether the displacement information measured by the Hall sensor module 5 is accurate or not or whether the magnet 4 is qualified or not.

The utility model is described below in connection with several practical measurement applications:

application case 1: referring to fig. 2, the sliding block is slid to the leftmost side of the first scale portion 141, that is, the maximum measuring range value of the first scale portion 141 is-20 mm, and the displacement information of the sliding block 3 (the magnet 4) detected by the hall sensor module 5 should be-20 mm, or a value very close to-20 mm, for example, 19.3 mm, 19.5 mm, 20.5 mm, 20.7 mm, so as to show the displacement measuring function and accuracy of the hall sensor module 5.

Application case 2: with continued reference to fig. 2, the slider 3 is moved back and forth any number of times, and finally the slider 3 is moved to the leftmost side of the first scale portion 141, that is, the maximum range value of the first scale portion 141 is-20 mm, and at this time, the displacement information of the slider 3 (the magnet 4) detected by the hall sensor module 5 should be-20 mm, or a value very close to-20 mm, for example, -19.3 mm, -19.5 mm, -20.5 mm, -20.7 mm, so as to demonstrate the displacement measurement function, accuracy and high repeatability of the hall sensor module 5.

Referring to the above application cases 1 and 2, other scale values within the range of the first scale 141 may be measured to show the displacement measurement function, accuracy and high repeatability of the hall sensor module 5.

Application case 3: referring to fig. 5, the sliding block 3 is slid to the zero point 140, at which time the physical displacement of the sliding block 3 (magnet 4) is 0mm, and the displacement information of the sliding block 3 (magnet 4) detected by the hall sensor module 5 should be 0mm, or a value very close to 0mm, for example, -0.3 mm, -0.7 mm, 0.5 mm, 0.7 mm, to show the displacement measuring function, accuracy of the hall sensor module 5.

Application case 4: referring to fig. 5, the slider 3 is moved back and forth any number of times, and finally the slider 3 is slid to the zero point 140, at which time the physical displacement of the slider 3 (magnet 4) is 0mm, and the displacement information of the slider 3 (magnet 4) detected by the hall sensor module 5 should be 0mm, or a value very close to 0mm, for example, -0.3 mm, -0.7 mm, 0.5 mm, 0.7 mm, so as to demonstrate the displacement measuring function, accuracy and high repeatability of the hall sensor module 5.

Application case 5: referring to fig. 6, the sliding block 3 is slid to the rightmost side of the second scale portion 142, that is, the maximum range value of the second scale portion 142, that is, 20mm, and the displacement information of the sliding block 3 (the magnet 4) detected by the hall sensor module 5 should be 20mm, or a value very close to 20mm, for example, 19.3 mm, 19.5 mm, 20.5 mm, 20.7 mm, so as to show the displacement measuring function of the hall sensor module 5, and the accuracy thereof.

Application case 6: with continued reference to fig. 6, the slider 3 is moved back and forth any number of times, and finally the slider 3 is slid to the rightmost side of the second scale portion 142, that is, the maximum range value of the second scale portion 142 is 20mm, and at this time, the displacement information of the slider 3 (the magnet 4) detected by the hall sensor module 5 should be 20mm, or a value very close to 20mm, for example, 19.3 mm, 19.5 mm, 20.5 mm, 20.7 mm, so as to show the displacement measurement function, accuracy and high repeatability of the hall sensor module 5.

Referring to the above application cases 5 and 6, other scale values within the range of the second scale portion 142 may be measured to show the displacement measurement function, accuracy and high repeatability of the hall sensor module 5.

The foregoing description of the preferred embodiments of the present utility model is not intended to limit the scope of the claims, which follow, as defined in the claims.

Claims (10)

1. A displacement measurement function display device based on a magnetic sensor, comprising:

the bracket is provided with an interface connected with a circuit board with a magnetic sensor;

the guide rail is a linear guide rail and is arranged on the bracket, and the slide block is assembled on the guide rail and can slide left and right along the guide rail;

and the magnet is arranged on the sliding block and moves back and forth relative to the guide rail along with the sliding block, and the movement displacement information of the magnet can be detected by the magnetic sensor.

2. The magnetic sensor-based displacement measurement function display device according to claim 1, wherein a first boss and a second boss are respectively protruded at left and right ends of the bracket, and the left and right ends of the guide rail are respectively fixed on the first boss and the second boss.

3. The magnetic sensor-based displacement measurement function display device according to claim 1, further comprising a first stopper and a second stopper, wherein the first stopper and the second stopper are movably disposed on the guide rail in a penetrating manner, and are respectively disposed on two sides of the magnet.

4. The magnetic sensor-based displacement measurement function display device according to claim 1, wherein the bracket has a panel structure parallel to the extending direction of the guide rail, and the panel structure is provided with a scale portion for indicating displacement information of the slider on the guide rail.

5. The magnetic sensor-based displacement measurement function display device according to claim 4, wherein the scale portion includes a zero point value, a first scale portion provided on a left side of the zero point value, and a second scale portion provided on a right side of the zero point value, and the first scale portion and the second scale portion are each provided with a scale value.

6. A magnetic sensor-based displacement measurement function display device according to claim 5, wherein the slider is provided with a tip portion, and the tip portion is directed toward the scale portion.

7. A magnetic sensor based displacement measurement function display device according to any one of claims 1 to 5, wherein a recess having a downward opening is provided in a center of a lower portion of the slider, the magnet is embedded in the recess, the magnet is a cylindrical magnet, the magnet reciprocates along the guide rail above the magnetic sensor along with the slider, and when the magnet is located directly above the magnetic sensor, a sliding displacement of the magnet on the guide rail is zero.

8. The magnetic sensor-based displacement measurement function display device according to any one of claims 1 to 5, wherein the interface is a slot formed in a lower portion of the bracket, the circuit board has a locking portion that enters the slot, and the locking portion cooperates with the slot to connect the bracket to the circuit board, and wherein the magnetic sensor is disposed on the locking portion.

9. The magnetic sensor-based displacement measurement function display device according to claim 8, wherein a blind groove is formed in the lower surface of the clamping groove, an embedded nut is arranged in the blind groove, and a screw penetrates through a screw through hole preset in the clamping portion to be matched with the embedded nut, so that the circuit board is locked in the clamping groove.

10. The magnetic sensor-based displacement measurement function presentation device of claim 8, wherein the circuit board is provided with an interface unit that communicates with an external device.

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