Method for increasing sensitivity of magnetic induction element

Abstract

The invention provides a method for increasing the sensitivity of a magnetic induction element, which comprises a magnetic induction element and a measured magnetic part, a limiter and a conductive magnet are added at the induction end of the magnetic induction element, and the limiter is arranged between the magnetic induction element and the conductive magnet and is used for changing the position between the conductive magnet and the magnetic induction element. And the conduction magnet is used for focusing a surrounding magnetic field and focusing the magnetic field of the tested magnetic element so as to improve the sensitivity of the magnetic induction element. According to the invention, only the original magnetic induction element needs to be transformed and upgraded, the conduction magnet capable of focusing the magnetic field is added to the end part of the magnetic induction element, the performance of the original product can be improved through simple improvement and upgrading, and huge benefits are brought. By adding the adjusting device, the spatial position of conduction magnetism can be changed, then magnetic fields in different spatial areas are focused, the positions of a magnetic induction element and a measured magnetic piece do not need to be changed, the transformation cost is low, the transformation efficiency is high, and the device can be applied to various switch, measurement and induction elements or scenes.

Description

Technical Field

[0001] The present invention relates to the field of magnetic induction technology, and in particular to a method for increasing the sensitivity of a magnetic induction element. Background Art

[0002] Magnetic induction elements play a vital role in many fields such as automation control, non-destructive testing, medical equipment and information security. There are many magnetic induction elements on the market, such as a wide-distance door magnetic switch disclosed in Chinese utility model patent 211404398U, and a magnetic induction distance detection device disclosed in Chinese invention patent 101514907B. Magnetic induction elements have been widely used. However, existing magnetic induction elements are often subject to large external interference, short sensing distance, or unsatisfactory sensitivity, and cannot be adjusted according to the actual use environment. To this end, a method for increasing the sensitivity of magnetic induction elements is proposed to solve the above problems. Summary of the invention

[0003] In view of this, the present invention provides a method for increasing the sensitivity of a magnetic induction element, aiming to significantly improve the sensitivity of the magnetic induction element and enable it to be effectively adjusted according to different actual use environments.

[0004] The embodiment of the present invention provides a method for increasing the sensitivity of a magnetic induction element, including a magnetic induction element and a magnetic part to be measured. The main method is to add a stopper and a conductive magnet to the induction end of the magnetic induction element. The stopper is between the magnetic induction element and the conductive magnet, and is used to change the position between the conductive magnet and the magnetic induction element; the conductive magnet is used to focus the surrounding magnetic field, focus the magnetic field of the magnetic part to be measured, so as to improve the sensitivity of the magnetic induction element. By setting the conductive magnet around the magnetic induction element, the dispersed magnetic field is concentrated in the induction area, and the sensitivity is further improved.

[0005] Further describing the above solution, the limiter is of a fixed type, and different sensitivities are added to the magnetic sensing element by setting different thicknesses.

[0006] More preferably, the diameter of the conductive magnet is less than or equal to the diameter of the magnetic induction element, and the conductive magnet has magnetic poles placed corresponding to the polarity of the magnetic part to be measured. The smaller the diameter of the conductive magnet, the larger the adjustable sensitivity range.

[0007] Furthermore, the switch type inside the magnetic sensing element can be one or more of a magnetic switch, a reed switch, a reed switch, a reed switch, a Hall effect switch, a triac, and a transistor switch.

[0008] More preferably, the limiter is cylindrical and sleeved on one end of the magnetic induction element, and a spiral groove is provided on the limiter. A protrusion is provided on the circumference of the magnetic induction element. The limiter rotates on the magnetic induction element through the spiral groove and the protrusion to adjust the position of the conducted magnetism.

[0009] Furthermore, an adjusting device is provided between the limiter and the conductive magnet, and the adjusting device can adjust the relative position of the conductive magnet and the magnetic induction element.

[0010] To further describe the above scheme, the adjusting device is in the shape of a screw, one end of which is installed on the end of the limiter through a thread, and the other end is fixedly connected to the conductive magnet. The relative distance between the conductive magnet and the magnetic induction element can be changed by rotating the adjusting device.

[0011] The above solution is further optimized, the adjusting device is rotatably installed at the end of the limiter, the installation position of the conductive magnet deviates from the rotation axis of the adjusting device, and the angle between the conductive magnet and the magnetic induction element can be changed by rotating the adjusting device.

[0012] Furthermore, the shape of the limiter can be any one of a sheet shape, a cylinder shape, a square shape, a triangle shape, and a trapezoid shape.

[0013] Compared with the prior art, the present invention only needs to modify and upgrade the original magnetic induction element, and add a conductive magnet that can focus the magnetic field at the end of the magnetic induction element. The overall structure is simple, the failure rate is low, and the maintenance cost is low. It has a wide range of application scenarios, and the performance of the original product can be improved through simple improvements and upgrades, bringing huge benefits. By adding an adjustment device, the spatial position of the conductive magnet can be changed, and the magnetic field in different spatial areas can be focused. There is no need to change the position of the magnetic induction element or the magnetic part being measured. The modification cost is low and the modification efficiency is high. It can be applied to various switching, measuring, and sensing elements or scenarios, and the actual application effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 , Figure 2 , Figure 3 A schematic diagram provided for Example 1 of the present invention;

[0016] Figure 4 A schematic diagram provided for Embodiment 2 of the present invention;

[0017] Figure 5A schematic diagram provided for Embodiment 3 of the present invention;

[0018] Figure 6 This is a schematic diagram provided for Example 4 of the present invention.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Magnetic induction element; 11. Protrusion; 2. Limiter; 21. Spiral groove; 22. Threaded hole; 3. Conductive magnetism; 4. Adjustment device; 5. Magnetic part to be measured.

[0021] The above drawings have shown clear embodiments of the present invention, which will be described in more detail below. These drawings and text descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0024] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] See also Figure 1 , 2As shown in Figures 3, embodiment 1 of the present invention includes a magnetic induction element 1 and a measured magnetic part 5. A limiter 2 and a conductive magnet 3 are added to the induction end of the magnetic induction element 1. The limiter 2 and the conductive magnet 3 are both cylindrical, and the limiter 2 is between the magnetic induction element 1 and the conductive magnet 3 to change the position between the conductive magnet 3 and the magnetic induction element 1. The conductive magnet 3 is used to focus the surrounding magnetic field and focus the magnetic field of the measured magnetic part 5 to improve the sensitivity of the magnetic induction element 1. Figure 1 , 2 The limiter 2 in 3 is of fixed type, and different sensitivities are added to the magnetic sensing element 1 by setting different thicknesses. The diameter of the conductive magnet 3 is less than or equal to the diameter of the magnetic sensing element 1, and the conductive magnet 3 places the magnetic poles correspondingly according to the polarity of the magnetic part 5 to be measured. The smaller the diameter of the conductive magnet 3, the larger the adjustable sensitivity range. The switch type inside the magnetic sensing element 1 can be one or more of a magnetic switch, a reed switch, a magnetic reed switch, a reed switch, a Hall effect switch, a triac, and a transistor switch.

[0027] Example 2

[0028] like Figure 4 As shown, on the basis of Example 1, the stopper 2 is modified, the stopper 2 is cylindrical and sleeved on one end of the magnetic induction element 1, and a spiral groove 21 is provided on the stopper 2, and a protrusion 11 is provided on the circumference of the magnetic induction element 1. The stopper 2 rotates on the magnetic induction element 1 through the spiral groove 21 and the protrusion 11 to adjust the position of the conductive magnet 3. It should be noted that if the conductive magnet 3 is installed in the center of the stopper 2, when the stopper 2 rotates, only the axial distance between the conductive magnet 3 and the magnetic induction element 1 is changed; if the conductive magnet 3 is installed at a position deviating from the rotation axis of the stopper 2, when the stopper 2 rotates, not only the axial distance between the conductive magnet 3 and the magnetic induction element 1 is changed, but also the radial distance between the conductive magnet 3 and the magnetic induction element 1 is changed.

[0029] Example 3

[0030] like Figure 5 As shown, on the basis of Example 1, the limiter 2 is modified, the limiter 2 is sleeved on the induction end of the magnetic induction element 1, and a threaded hole 22 is opened in the center of the limiter 2, a screw-shaped adjustment device 4 is installed on the limiter 2 through the threaded hole 22, and the conductive magnet 3 is installed at the other end of the adjustment device 4. The axial distance between the conductive magnet 3 and the magnetic induction element 1 can be changed by rotating the adjustment device 4.

[0031] Example 4

[0032] like Figure 6As shown, Example 3 is optimized, the threaded hole 22 of the limiter 2 is a through hole, the adjusting device 4 is adsorbed on the end of the limiter 2 by magnetic force, the installation position of the conductive magnet 3 deviates from the rotation axis of the adjusting device 4, and the angle between the conductive magnet 3 and the magnetic induction element 1 can be changed by rotating the adjusting device 4, thereby changing the radial distance between the conductive magnet 3 and the magnetic induction element 1.

[0033] In summary, the present invention adds a conductive magnet 3 between the original magnetic induction element 1 and the measured magnetic part 5 to focus the magnetic field. The addition of a limiter 2 and an adjustment device 4 can change the position of the conductive magnet 3, thereby focusing the magnetic field on a specific space, and quickly increasing the sensitivity of the magnetic induction element 1. The overall structure is simple, the failure rate is low, the maintenance cost is low, and the application scenarios are wide.

[0034] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the present invention. This application is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The specification and examples are to be considered exemplary only, and the true scope and spirit of the present invention are indicated by the following claims.

[0035] It should be understood that the present invention is not limited to the exact construction that has been described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for increasing the sensitivity of a magnetic induction element, comprising a magnetic induction element (1) and a magnetic part to be measured (5), characterized in that: A stopper (2) and a conductive magnet (3) are added to the induction end of the magnetic induction element (1); the stopper (2) is located between the magnetic induction element (1) and the conductive magnet (3); the stopper (2) is used to change the position between the conductive magnet (3) and the magnetic induction element (1); and the conductive magnet (3) is used to focus the surrounding magnetic field and focus the magnetic field of the measured magnetic component (5) to improve the sensitivity of the magnetic induction element (1).

2. A method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: The stopper (2) is of a fixed type and can increase different sensitivities for the magnetic sensing element (1) by setting different thicknesses.

3. A method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: The diameter of the conductive magnet (3) is less than or equal to the diameter of the magnetic induction element (1), and the magnetic poles of the conductive magnet (3) are placed correspondingly according to the polarity of the magnetic component (5) to be measured.

4. A method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: The switch type inside the magnetic sensing element (1) can be one or more of a magnetic switch, a reed switch, a reed switch, a reed switch, a Hall effect switch, a triac, and a transistor switch.

5. The method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: The stopper (2) is cylindrical and sleeved on one end of the magnetic induction element (1), and a spiral groove (21) is provided on the stopper (2). A protrusion (11) is provided on the circumference of the magnetic induction element (1). The stopper (2) is rotated on the magnetic induction element (1) through the spiral groove (21) and the protrusion (11) to adjust the position of the conductive magnetism (3).

6. A method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: An adjusting device (4) is provided between the stopper (2) and the conductive magnet (3), and the adjusting device (4) can adjust the relative position of the conductive magnet (3) and the magnetic induction element (1).

7. A method for increasing the sensitivity of a magnetic induction element according to claim 6, characterized in that: The adjusting device (4) is in the shape of a screw, one end of which is screw-mounted on the end of the stopper (2) and the other end of which is fixedly connected to the conductive magnet (3). The relative distance between the conductive magnet (3) and the magnetic induction element (1) can be changed by rotating the adjusting device (4).

8. A method for increasing the sensitivity of a magnetic induction element according to claim 6, characterized in that: The adjusting device (4) is rotatably mounted on the end of the stopper (2); the mounting position of the conductive magnet (3) deviates from the rotation axis of the adjusting device (4); and the angle between the conductive magnet (3) and the magnetic induction element (1) can be changed by rotating the adjusting device (4).

9. A method for increasing the sensitivity of a magnetic induction element according to claim 1, characterized in that: The shape of the stopper (2) can be sheet-shaped, cylindrical, square, triangular, or trapezoidal.

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