Mechanism for realizing position detection by using tunnel magnetoresistance effect

Abstract

The utility model belongs to the technical field of position detection, and particularly relates to a mechanism for realizing position detection by using a tunnel magnetoresistance effect, which comprises a circuit board and a trigger mechanism, and the trigger mechanism can rotate around a preset axial direction between a starting position and an ending position; the mechanism for realizing position detection by using the tunnel magnetoresistive effect further comprises a sensor arranged on the circuit board; the magnetic part is fixed to the trigger mechanism and located above the sensor, and the trigger mechanism drives the magnetic part to be close to or away from the sensor when rotating; and the microcontroller is arranged on the circuit board and is connected with the sensor. The non-contact structure of the sensor and the magnetic piece is used, and the reasonable structural design is matched, so that the game player has the advantages of being simple in structure, good in smoothness, easy to assemble, lower in power consumption, more energy-saving, better in linearity and better in game experience.

Description

Technical Field

[0001] The utility model belongs to the technical field of position detection, and in particular relates to a mechanism for realizing position detection by utilizing tunnel magnetoresistance effect. Background Art

[0002] In various gaming peripherals, such as game controllers and VR devices, the trigger is a very commonly used and important mechanism. The performance of the trigger directly affects the user's gaming experience.

[0003] Linearity is an important parameter of trigger performance. The better the linearity, the closer the detected position is to the actual position, the smaller the error, and the better the gaming experience. For example, the throttle in racing games is controlled by the trigger. The better the trigger linearity, the more uniform the throttle control and the more constant the car's acceleration. When the trigger linearity is poor, the throttle control is uneven, the car's acceleration is not constant, and it fluctuates. Smoothness and power consumption are also important parameters of trigger performance.

[0004] In the prior art, there are two main ways to realize the trigger principle. One is to use the potentiometer principle, which has the advantages of good linearity and low power consumption, but the disadvantage is that it needs to use a connecting rod mechanism, which has a complex structure, has large friction resistance, and is not smooth.

[0005] The other is to use the Hall principle. The advantages of this method are simple structure and good smoothness, but the disadvantages are high power consumption and poor linearity. Utility Model Content

[0006] The utility model aims to provide a mechanism for realizing position detection by using the tunnel magnetoresistance effect, in view of the technical problems that the prior art uses the potentiometer principle or the Hall principle to realize the trigger principle, such as complex structure, large friction resistance, poor smoothness, or high power consumption and poor linearity.

[0007] In order to solve the above technical problems, the utility model provides a mechanism for realizing position detection by using the tunnel magnetoresistance effect, wherein the mechanism for realizing position detection by using the tunnel magnetoresistance effect comprises a circuit board and a rotatable trigger mechanism, wherein the trigger mechanism can rotate around a preset axial direction between a starting position and an end position;

[0008] The mechanism for realizing position detection by utilizing the tunnel magnetoresistance effect also includes:

[0009] A tunnel magnetoresistive sensor, wherein the tunnel magnetoresistive sensor is disposed on the circuit board;

[0010] A magnetic member, wherein the magnetic member is fixed on the trigger mechanism and is located above the tunnel magnetoresistive sensor, and when the magnetic member is driven by the trigger mechanism to rotate, it moves closer to or farther from the tunnel magnetoresistive sensor;

[0011] A microcontroller is disposed on the circuit board and is connected to the tunnel magnetoresistive sensor.

[0012] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, the magnetic member is a magnet, and the magnet is one of an electromagnet and a permanent magnet.

[0013] Optionally, in the mechanism for realizing position detection by utilizing the tunnel magnetoresistance effect as described above, the central axis of the tunnel magnetoresistance sensor and the central axis of the magnetic component are located on the same vertical plane.

[0014] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, the distance between the vertical plane where the central axis of the tunnel magnetoresistance sensor is located and the vertical plane where the central axis of the magnetic member is located is not greater than 1 mm.

[0015] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the starting position, an angle of 15 to 20 degrees is formed between the bottom surface of the magnetic member and the upper surface of the circuit board where the tunnel magnetoresistance sensor is located.

[0016] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the end position, the bottom surface of the magnetic member is parallel to the upper surface of the circuit board where the tunnel magnetoresistance sensor is located.

[0017] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the end position, an angle of no more than 3 degrees is formed between the bottom surface of the magnetic member and the upper surface of the circuit board where the tunnel magnetoresistance sensor is located.

[0018] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the end position, the distance between the lower surface of the magnetic member and the upper surface of the tunnel magnetoresistance sensor is between 1.5 mm and 3.5 mm.

[0019] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the end position, the edge of the magnetic member and the center of the tunnel magnetoresistance sensor are located on the same vertical plane.

[0020] Optionally, in the mechanism for realizing position detection by using the tunnel magnetoresistance effect as described above, at the end position, the vertical distance between the edge of the magnetic member and the center line of the tunnel magnetoresistance sensor is not greater than 1 mm.

[0021] The positive and progressive effects of the utility model are:

[0022] 1. The utility model uses a non-contact structure of a tunnel magnetoresistive sensor and a magnetic part, and cooperates with a reasonable structural design. Compared with the connecting rod structure of a potentiometer, it has the advantages of simple structure, good smoothness, and easy assembly.

[0023] 2. The utility model uses a tunnel magnetoresistive sensor and a reasonably designed positional relationship with a magnetic part, and has a reasonable structure. Compared with the Hall trigger mechanism, it has lower power consumption, is more energy-efficient, has better linearity, and provides a better gaming experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The disclosure of the present invention will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are only for illustrative purposes and are not intended to limit the scope of protection of the present invention. In the drawings:

[0025] Figure 1 It is a structural cross-sectional view of the utility model when it is in the starting position;

[0026] Figure 2 It is a structural schematic diagram of the utility model when it is in the end position. DETAILED DESCRIPTION

[0027] The following is an explanation of the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] It should be noted that the following embodiments and features therein may be combined with each other if there is no conflict.

[0029] In the description of the present invention, it should be noted that directional words such as the terms "outside", "middle", "inside", "outside", etc., which indicate directions and positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0031] Reference Figure 1 and Figure 2 An embodiment of the utility model provides a mechanism for realizing position detection by using the tunnel magnetoresistance effect. The mechanism for realizing position detection by using the tunnel magnetoresistance effect includes a circuit board 10, a rotatable trigger mechanism 20, a tunnel magnetoresistance sensor 30, a magnetic member 40 and a microcontroller 50.

[0032] The trigger mechanism 20 can rotate around a preset axis between the starting position and the ending position. The rotating structure of the trigger mechanism 20 is a prior art and will not be described in detail here.

[0033] The tunnel magnetoresistive sensor 30 is a sensor capable of detecting the magnetic induction intensity when the magnetic member 40 approaches or moves away from the magnetic member 40 . The tunnel magnetoresistive sensor 30 is disposed on the circuit board 10 .

[0034] The magnetic member 40 is fixed on the trigger mechanism 20 and is located above the tunnel magnetoresistive sensor 30 . The magnetic member 40 is driven by the trigger mechanism 20 to rotate so as to move closer to or farther from the tunnel magnetoresistive sensor 30 .

[0035] The microcontroller 50 is disposed on the circuit board 10 , and the microcontroller 50 is connected to the tunnel magnetoresistive sensor 30 .

[0036] The utility model utilizes the rotation of the trigger mechanism 20 to drive the change of the position of the magnetic member 40, thereby changing the magnetic induction intensity of the magnetic member 40 at the position of the tunnel magnetoresistive sensor 30, and realizes the detection of the trigger position by detecting the strength of the magnetic induction intensity through the tunnel magnetoresistive sensor 30. The magnetic induction intensity detected by the tunnel magnetoresistive sensor 30 is converted into an analog voltage signal and transmitted to the microcontroller 50, and the microcontroller 50 determines the position of the trigger according to the magnitude of the voltage signal.

[0037] The microcontroller 50 in this embodiment is a microcontroller 50 with a built-in analog-to-digital conversion function.

[0038] It can be understood by those skilled in the art that the relevant modules involved in the present utility model and the functions they implement can be implemented by carrying conventional computer software programs or relevant protocols in the prior art on the improved hardware and the devices, components or systems that constitute it, and it is not an improvement on the computer software programs or relevant protocols in the prior art. For example, the improved computer hardware system can still implement the specific functions of the hardware system by loading the existing software operating system. Therefore, it can be understood that the innovation of the present utility model lies in the improvement of the hardware modules in the prior art and their connection and combination relationship, rather than the improvement of the software or protocols installed in the hardware modules to realize the relevant functions.

[0039] Specifically, the corresponding computer software / program loaded in the microcontroller 50 in this embodiment adopts the algorithm program in the application number 202310245325.5 for calculating the change of the trigger 20 pressed according to the change of the digital signal output by the Hall sensor 400.

[0040] The algorithm program in the utility model and the 202310245325.5 patent is essentially a signal change curve that approximates linear fitting to the trigger position.

[0041] Therefore, the corresponding computer software / program loaded by the microcontroller 50 in the present invention is a program that can be obtained by slightly modifying the parameters of an existing mature computer program, and is a conventional application of a known computer program.

[0042] In some embodiments, the trigger structure 20 is made of non-magnetic material, such as plastic material.

[0043] In some embodiments, the magnetic member 40 is preferably positioned on the trigger mechanism 20 close to the upper side of the tunnel magnetoresistance sensor. The magnetic member 40 can be attached to the bottom or side of the trigger mechanism 20 close to the tunnel magnetoresistance sensor, and is preferably embedded in the bottom or side of the trigger mechanism 20 close to the tunnel magnetoresistance sensor.

[0044] In some embodiments, the microcontroller 50 may be a microcontroller independent of the gaming peripherals, in which case the microcontroller 50 of the present application is connected to the microcontroller of the gaming peripherals.

[0045] Microcontroller 50 is preferably a microcontroller shared with gaming peripherals.

[0046] The microcontroller 50 is preferably a microcontroller based on a single chip microcomputer architecture.

[0047] In some embodiments, the magnetic member 40 is a magnet, and the magnet is an electromagnet or a permanent magnet.

[0048] When the magnet is an electromagnet, the electromagnet can be connected to a circuit board, and the circuit board can supply power to the magnet.

[0049] In some embodiments, the central axis of the tunnel magnetoresistive sensor 30 and the central axis of the magnetic member 40 are located on the same vertical plane.

[0050] like Figure 1 The cross section of the cross-sectional view is a vertical plane, that is, the vertical plane in this embodiment is a plane perpendicular to the upper surface of the circuit board, and the central axis of the tunnel magnetoresistive sensor 30 and the central axis of the magnetic component 40 are both located on this plane.

[0051] In some embodiments, the distance between the vertical plane where the central axis of the tunnel magnetoresistive sensor 30 is located and the vertical plane where the central axis of the magnetic member 40 is located is no more than 1 mm.

[0052] In this embodiment, the vertical plane where the central axis of the tunnel magnetoresistive sensor 30 is located is allowed to be on a different vertical plane from the vertical plane where the central axis of the magnetic member 40 is located. A certain error may exist, and the error range is limited.

[0053] When the position of the tunnel magnetoresistive sensor 30 and the position of the magnetic element 40 are not designed to match, the analog voltage signal output by the tunnel magnetoresistive sensor 30 may not be monotonically increasing or monotonically decreasing, which will lead to inaccurate position detection and even failure to check the trigger position. The utility model adopts the reasonable position layout of the tunnel magnetoresistive sensor 30 and the magnetic element 40 within a certain error, and can obtain a position signal with better linearity.

[0054] In some embodiments, reference Figure 1 When the trigger mechanism 20 rotates to the starting position, there is a certain angle between the bottom surface of the magnetic member 40 and the upper surface of the circuit board 10 where the tunnel magnetoresistive sensor 30 is located, and the angle a ranges from 15 degrees to 20 degrees.

[0055] In some embodiments, reference Figure 2 When the trigger mechanism 20 rotates to the end position, the bottom surface of the magnetic member 40 is parallel to the upper surface of the circuit board 10 where the tunnel magnetoresistive sensor 30 is located.

[0056] In some embodiments, when the trigger mechanism 20 rotates to the end position, an angle of no greater than 3 degrees is formed between the bottom surface of the magnetic member 40 and the upper surface of the circuit board 10 where the tunnel magnetoresistive sensor 30 is located.

[0057] In this embodiment, at the end position, the bottom surface of the magnetic member 40 is allowed to be non-parallel to the upper surface of the circuit board 10 where the tunnel magnetoresistive sensor 30 is located, and a certain angle deviation is allowed, and the deviation angle is limited to no more than 3 degrees.

[0058] In some embodiments, when the trigger mechanism 20 rotates to the end position, the upper and lower surfaces of the magnetic member 40 are magnetic surfaces, that is, the lower surface of the magnetic member 40 is the S pole and the upper surface is the N pole, or the lower surface of the magnetic member 40 is the N pole and the upper surface is the S pole, and the distance between the lower surface of the magnetic member 40 and the upper surface of the tunnel magnetoresistive sensor 30 is between 1.5 mm and 3.5 mm, and the distance is preferably the shortest distance between the two.

[0059] In some embodiments, reference Figure 2 When the trigger mechanism 20 rotates to the end position, the edge of the magnetic member 40 and the center of the tunnel magnetoresistive sensor 30 are located on the same vertical plane.

[0060] Specifically, when the trigger mechanism 20 is located on the right side of the tunnel magnetoresistive sensor 30 , the left edge of the magnetic member 40 and the center of the tunnel magnetoresistive sensor 30 are located on the same vertical plane.

[0061] In some embodiments, when the trigger mechanism 20 rotates to the end position, the vertical distance between the edge of the magnetic member 40 and the center line of the tunnel magnetoresistive sensor 30 is no greater than 1 mm.

[0062] In this embodiment, at the end position, the edge of the magnetic member 40 and the center line of the tunnel magnetoresistive sensor 30 are allowed to be located on different vertical planes with a certain error distance, and the error distance is limited to be no greater than 1 mm.

[0063] The utility model is described in detail above in conjunction with the embodiments of the drawings. A person skilled in the art can make various variations of the utility model according to the above description. Therefore, some details in the embodiments should not constitute a limitation of the utility model, and the utility model shall be protected within the scope defined by the attached claims.

Claims

1. A mechanism for realizing position detection by using the tunnel magnetoresistance effect, the mechanism for realizing position detection by using the tunnel magnetoresistance effect comprising a circuit board and a rotatable trigger mechanism, wherein the trigger mechanism can rotate around a preset axis between a starting position and an end position; It is characterized in that The mechanism for realizing position detection by utilizing the tunnel magnetoresistance effect also includes: A tunnel magnetoresistive sensor, wherein the tunnel magnetoresistive sensor is disposed on the circuit board; A magnetic member, wherein the magnetic member is fixed on the trigger mechanism and is located above the tunnel magnetoresistive sensor, and when the magnetic member is driven by the trigger mechanism to rotate, it moves closer to or farther from the tunnel magnetoresistive sensor; A microcontroller is disposed on the circuit board and is connected to the tunnel magnetoresistive sensor.

2. The mechanism for realizing position detection by using the tunnel magnetoresistance effect as claimed in claim 1, characterized in that: The magnetic part is a magnet, and the magnet is an electromagnet or a permanent magnet.

3. The mechanism for realizing position detection by using tunnel magnetoresistance effect as claimed in claim 1, characterized in that: The distance between the vertical plane where the central axis of the tunnel magnetoresistive sensor is located and the vertical plane where the central axis of the magnetic component is located is not greater than 1 mm.

4. The mechanism for realizing position detection by using the tunnel magnetoresistance effect as claimed in claim 3, characterized in that: The central axis of the tunnel magnetoresistive sensor and the central axis of the magnetic component are located on the same vertical plane.

5. The mechanism for realizing position detection by using the tunnel magnetoresistance effect according to any one of claims 1 to 4, characterized in that: At the starting position, an angle of 15 to 20 degrees is formed between the bottom surface of the magnetic member and the upper surface of the circuit board where the tunnel magnetoresistive sensor is located.

6. The mechanism for realizing position detection by using the tunnel magnetoresistance effect according to any one of claims 1 to 4, characterized in that: At the end position, an angle of no more than 3 degrees is formed between the bottom surface of the magnetic member and the upper surface of the circuit board where the tunnel magnetoresistive sensor is located.

7. The mechanism for realizing position detection by using the tunnel magnetoresistance effect as claimed in claim 6, characterized in that: At the end position, the bottom surface of the magnetic member is parallel to the upper surface of the circuit board where the tunnel magnetoresistive sensor is located.

8. The mechanism for realizing position detection by using the tunnel magnetoresistance effect as claimed in claim 6, characterized in that: At the end position, the distance between the lower surface of the magnetic member and the upper surface of the tunnel magnetoresistive sensor is between 1.5 mm and 3.5 mm.

9. The mechanism for realizing position detection by using tunnel magnetoresistance effect as claimed in claim 6, characterized in that: At the end position, the vertical distance between the edge of the magnetic member and the center line of the tunnel magnetoresistive sensor is no greater than 1 mm.

10. The mechanism for realizing position detection by using the tunnel magnetoresistance effect as claimed in claim 9, characterized in that: At the end position, the edge of the magnetic member and the center of the tunnel magnetoresistive sensor are located on the same vertical plane.

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