Miniaturized digital vibration sensor

Abstract

The invention relates to the technical field of vibration sensors, and discloses a miniaturized digital vibration sensor, which comprises a shell, one side of the shell is connected with a shell cover, and one side of the shell cover is provided with a detection assembly for detecting vibration; the detection assembly comprises a shielding seat and a connecting rod, one side of the top of the shielding seat is provided with a magnet, and the top of the magnet is provided with a magnetic core; a coil sleeving the outer side of the magnetic core is adhered to the bottom of the connecting rod; a ruby in contact with a to-be-detected object is fixed at the top of the connecting rod; the inner wall of the shell cover is in threaded connection with a pressing ring, the top of the pressing ring is connected with a second spring piece, the top of the second spring piece is connected with a supporting frame, when vibration is generated through rotation of the bearing, the ruby makes contact with an outer ring of the bearing and transmits the vibration to the connecting rod, and the connecting rod drives the coil to move on the outer side of the magnetic core, cuts magnetic lines of force and generates induction voltage. The electromagnetic induction principle ensures that a vibration signal can be accurately converted into an electric signal, so that high-precision vibration measurement is realized.

Description

Technical Field

[0001] The invention relates to the technical field of vibration sensors, in particular to a miniaturized digital vibration sensor. Background Art

[0002] Vibration sensor is a sensor used to detect impact force. In the highly developed modern industry, the development of modern testing technology towards digitalization and informatization has become an inevitable development trend. The front end of the test system is the sensor, which is the soul of the entire test system and is listed as a cutting-edge technology by countries around the world. In particular, the rapid development of IC technology and computer technology in recent years has provided a good and reliable scientific and technological foundation for the development of sensors. The development of sensors is getting better and better, and digitalization, multi-function and intelligence are important features of the development of modern sensors.

[0003] In the existing vibration sensor technology, mechanical or analog sensors have problems such as low accuracy, large size, inconvenient installation and slow response speed. Traditional sensors often have complex structures and large friction losses between components, which leads to increased measurement errors and are not easy to integrate into miniaturized systems. Therefore, a miniaturized digital vibration sensor is proposed. Summary of the invention

[0004] The object of the present invention is to provide a miniaturized digital vibration sensor to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a miniaturized digital vibration sensor, comprising a housing, one side of the housing is connected to a housing cover, and one side of the housing cover is provided with a detection component for detecting vibration;

[0006] The detection assembly includes a shielding seat and a connecting rod, a magnet is installed on one side of the top of the shielding seat, and a magnetic core is installed on the top of the magnet;

[0007] The bottom of the connecting rod is bonded with a coil sleeved on the outside of the magnetic core;

[0008] A ruby ​​in contact with the object to be detected is fixed on the top of the connecting rod;

[0009] The inner wall of the shell cover is threadedly connected with a clamping ring, the top of the clamping ring is connected with a second spring sheet, the top of the second spring sheet is connected with a support frame, and the top of the support frame is connected with a first spring sheet;

[0010] The bottom of the clamping ring is connected with an annular magnet.

[0011] Preferably, a second wiring hole is provided on one side of the shell cover, and a first wiring hole connected to the second wiring hole is provided on one side of the shell body.

[0012] Preferably, the outer sides of the connecting rod are respectively inserted into the centers of the first spring sheet and the second spring sheet.

[0013] Preferably, outer sides of the first spring sheet, the support frame and the second spring sheet are inserted into the inner side wall of the shell cover, and the top of the first spring sheet is bonded to the inner side wall of the shell cover.

[0014] Preferably, the outer side of the shielding seat is mounted on the top inner wall of the shell.

[0015] Preferably, the outer side of the top of the connecting rod passes through one side of the shell cover, and the inner side of the annular magnet is sleeved on the outer side of the coil.

[0016] Preferably, the top of the magnetic core is hemispherical in shape.

[0017] Preferably, two limit blocks are provided on the outer side of the connecting rod, and two sides of the limit blocks are respectively attached to one side of the first spring sheet and the second spring sheet.

[0018] Preferably, when one side of the ruby ​​is squeezed, the connecting rod drives the coil to move.

[0019] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0020] 1. When the bearing rotates and generates vibration, the ruby ​​contacts the outer ring of the bearing and transmits the vibration to the connecting rod. The connecting rod drives the coil to move outside the magnetic core, cutting the magnetic lines of force and generating an induced voltage. The principle of electromagnetic induction ensures that the vibration signal can be accurately converted into an electrical signal, thereby achieving high-precision vibration measurement.

[0021] Second, the sensitivity of the sensor is significantly improved by adding an annular magnet between the upper end of the coil and the second spring sheet. The annular magnet strengthens the magnetic field at the working position of the coil, allowing the coil to cut the magnetic lines of force more effectively during movement, thereby generating a larger induced voltage. The annular magnet also helps to reduce the attenuation and linear deviation in the frequency response, thereby improving the linearity of the sensor.

[0022] 3. The parts in the detection assembly are compact in structure and smaller in volume than existing sensors. The miniaturized design of the present invention not only makes the sensor lighter, easier to install and carry, but also improves the response speed and dynamic performance of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0025] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure from a third viewing angle of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the first wiring hole of the present invention;

[0028] Figure 5 It is a schematic diagram of the structure of the ruby ​​of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the second wiring hole of the present invention;

[0030] Figure 7 It is a schematic diagram of the cross-sectional structure of the shell cover of the present invention;

[0031] Figure 8 It is a schematic diagram of the exploded view structure of the detection component of the present invention;

[0032] Fig. 9 It is a schematic diagram of the connecting rod structure of the present invention;

[0033] Fig.10 A vibration velocity waveform diagram of a bearing tested by the vibration sensor of the present invention;

[0034] Fig.11 It is a position waveform diagram of the vibration sensor of the present invention testing the bearing;

[0035] Fig.12 The waveform diagram of the induced voltage of the vibration sensor of the present invention when testing the bearing;

[0036] Fig.13 This is a waveform diagram of the vibration test of the bearing by the vibration sensor of the present invention.

[0037] Explanation of the accompanying drawings: 1. Shell; 2. Shell cover; 3. Detection component; 31. Ruby; 32. Ring magnet; 33. Coil; 34. Magnet; 35. Shielding seat; 36. Clamping ring; 37. First spring sheet; 38. Support frame; 39. Second spring sheet; 310. Magnetic core; 311. Connecting rod; 312. Limit block; 4. First wiring hole; 5. Second wiring hole. DETAILED DESCRIPTION

[0038] 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 only 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.

[0039] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0040] Example

[0041] See also Figure 1-13 The present invention provides a technical solution: a miniaturized digital vibration sensor, comprising a housing 1, a housing cover 2 connected to one side of the housing 1, a detection component 3 for detecting vibration provided on one side of the housing cover 2, the vibration sensor comprising the housing 1, the housing cover 2 and the detection component 3;

[0042] The detection assembly 3 includes a shielding seat 35 and a connecting rod 311. A magnet 34 is installed on one side of the top of the shielding seat 35. A magnetic core 310 is installed on the top of the magnet 34. The shielding seat 35 shields the magnetic field generated by the magnet 34 to prevent magnetic leakage. The material of the magnetic core 310 is a magnetic conductive material to control the density and direction of the magnetic flux.

[0043] A coil 33 sleeved on the outside of the magnetic core 310 is bonded to the bottom of the connecting rod 311; a ruby ​​31 in contact with the object to be detected is fixed to the top of the connecting rod 311; a clamping ring 36 is threadedly connected to the inner wall of the shell cover 2, a second spring sheet 39 is connected to the top of the clamping ring 36, a support frame 38 is connected to the top of the second spring sheet 39, and a first spring sheet 37 is connected to the top of the support frame 38. The first spring sheet 37 and the second spring sheet 39 provide a restoring force when the connecting rod 311 moves, ensuring that the force is in the vertical direction without affecting its own movement;

[0044] An annular magnet 32 ​​is connected to the bottom of the clamping ring 36, and the clamping ring 36 is threadedly connected to the shell cover 2, so that the first spring sheet 37, the support frame 38 and the second spring sheet 39 are spaced apart from each other. The annular magnet 32 ​​strengthens the magnetic field at the working position of the coil 33, and strengthens and supplements the magnetic field of the magnetic circuit. A second wiring hole 5 is provided on one side of the shell cover 2, and a first wiring hole 4 connected to the second wiring hole 5 is provided on one side of the shell 1. The outer sides of the connecting rod 311 are respectively inserted into the centers of the first spring sheet 37 and the second spring sheet 39.

[0045] The outer sides of the first spring sheet 37, the support frame 38 and the second spring sheet 39 are inserted into the inner wall of the shell cover 2, the top of the first spring sheet 37 is bonded to the inner wall of the shell cover 2, the outer side of the shielding seat 35 is installed on the top inner wall of the shell 1, the top outer side of the connecting rod 311 passes through one side of the shell cover 2, the inner side of the annular magnet 32 ​​is sleeved on the outer side of the coil 33, the coil 33 cuts the magnetic field and generates an induced voltage, and the coil 33 is connected to the external circuit to transmit electrical signals.

[0046] The top of the magnetic core 310 is hemispherical in shape. The hemispherical magnetic core 310 makes the magnetic field distribution more uniform and the magnetic induction intensity is also improved, which optimizes the sensitivity and frequency response of the vibration sensor. Two limit blocks 312 are provided on the outside of the connecting rod 311. The two sides of the limit blocks 312 are respectively attached to one side of the first spring sheet 37 and the second spring sheet 39. When one side of the ruby ​​31 is squeezed, the connecting rod 311 drives the coil 33 to be in a moving state.

[0047] The test data of this vibration sensor is as follows:

[0048] The vibration velocity waveform of the bearing tested by the vibration sensor is as follows: Fig.10 As shown;

[0049] The position waveform of the vibration sensor testing the bearing is as follows Fig.11 As shown;

[0050] The induced voltage waveform of the vibration sensor on the bearing test is as follows Fig.12 As shown;

[0051] The waveform of the vibration sensor's bearing vibration test is as follows: Fig.13 shown.

[0052] Working principle: When it is necessary to measure the vibration of the bearing, first install the vibration sensor on one side of the bearing vibration measuring instrument, pass the wire through the first wiring hole 4 and the second wiring hole 5 in sequence, and connect one end of the wire to the coil 33, and the other end of the wire to the external circuit, and transmit the electrical signal through the wire;

[0053] The ruby ​​31 is in contact with the outer ring of the bearing. At this time, the bearing rotates, so that the vibration generated by the bearing hits the ruby ​​31, so that the ruby ​​31 pushes the connecting rod 311 to move. At this time, the connecting rod 311 drives the coil 33 to move. When the coil 33 continuously moves outside the magnetic core 310, the coil 33 cuts the magnetic lines of force generated by the magnetic core 310, generates an induced voltage, and converts the output analog quantity into an output digital quantity. By capturing the generated induced voltage, amplifying and processing it, the bearing vibration can be measured.

[0054] At the same time, an annular magnet 32 ​​is added between the upper end of the coil 33 and the second spring sheet 39. The annular magnet 32 ​​improves the sensitivity of the sensor and reduces the attenuation and linear deviation in the frequency response.

[0055] At the same time, the parts in the detection component 3 are compact in structure and smaller in volume than the existing ones, so that the sensor of the present invention is relatively light in weight, the performance of the sensor is improved, and the sensitivity and linearity of the vibration sensor are improved.

[0056] In summary, when the bearing rotates and generates vibration, the ruby ​​31 contacts the outer ring of the bearing and transmits the vibration to the connecting rod 311. The connecting rod 311 drives the coil 33 to move outside the magnetic core 310, cutting the magnetic lines of force and generating an induced voltage. The principle of electromagnetic induction ensures that the vibration signal can be accurately converted into an electrical signal, thereby achieving high-precision vibration measurement.

[0057] The sensitivity of the sensor is significantly improved by adding an annular magnet 32 ​​between the upper end of the coil 33 and the second spring sheet 39. The annular magnet 32 ​​strengthens the magnetic field at the working position of the coil 33, so that the coil 33 can more effectively cut the magnetic lines of force during movement, thereby generating a larger induced voltage. The annular magnet 32 ​​also helps to reduce the attenuation and linear deviation in the frequency response, thereby improving the linearity of the sensor.

[0058] The parts in the detection component 3 are compact in structure and smaller in volume than those of existing sensors. The miniaturized design of the present invention not only makes the sensor lighter and easier to install and carry, but also improves the response speed and dynamic performance of the sensor.

[0059] It will be appreciated by those skilled in the art that the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways, even if such combinations and / or combinations are not explicitly described in the present invention. In particular, the features described in the various embodiments and / or claims of the present invention may be combined and / or combined in various ways without departing from the spirit and teachings of the present invention. All of these combinations and / or combinations fall within the scope of the present invention.

Claims

1. A miniaturized digital vibration sensor, comprising a housing (1), characterized in that: One side of the housing (1) is connected to a housing cover (2), and one side of the housing cover (2) is provided with a detection component (3) for detecting vibration; The detection assembly (3) comprises a shielding seat (35) and a connecting rod (311); a magnet (34) is mounted on one side of the top of the shielding seat (35); and a magnetic core (310) is mounted on the top of the magnet (34); A coil (33) sleeved on the outside of the magnetic core (310) is bonded to the bottom of the connecting rod (311); A ruby ​​(31) in contact with the object to be detected is fixed on the top of the connecting rod (311); The inner wall of the shell cover (2) is threadedly connected with a clamping ring (36), the top of the clamping ring (36) is connected with a second spring sheet (39), the top of the second spring sheet (39) is connected with a support frame (38), and the top of the support frame (38) is connected with a first spring sheet (37); The bottom of the clamping ring (36) is connected to an annular magnet (32).

2. A miniaturized digital vibration sensor according to claim 1, characterized in that: A second wiring hole (5) is provided on one side of the shell cover (2), and a first wiring hole (4) connected to the second wiring hole (5) is provided on one side of the shell body (1).

3. A miniaturized digital vibration sensor according to claim 1, characterized in that: The outer sides of the connecting rod (311) are respectively inserted into the centers of the first spring sheet (37) and the second spring sheet (39).

4. A miniaturized digital vibration sensor according to claim 1, characterized in that: The outer sides of the first spring sheet (37), the support frame (38) and the second spring sheet (39) are inserted into the inner side wall of the shell cover (2), and the top of the first spring sheet (37) is bonded to the inner side wall of the shell cover (2).

5. A miniaturized digital vibration sensor according to claim 1, characterized in that: The outer side of the shielding seat (35) is mounted on the top inner wall of the housing (1).

6. A miniaturized digital vibration sensor according to claim 1, characterized in that: The outer side of the top of the connecting rod (311) penetrates one side of the shell cover (2), and the inner side of the annular magnet (32) is sleeved on the outer side of the coil (33).

7. A miniaturized digital vibration sensor according to claim 1, characterized in that: The top of the magnetic core (310) is in a hemispherical shape.

8. A miniaturized digital vibration sensor according to claim 1, characterized in that: Two limit blocks (312) are provided on the outside of the connecting rod (311), and two sides of the limit blocks (312) are respectively attached to one side of the first spring sheet (37) and the second spring sheet (39).

9. A miniaturized digital vibration sensor according to claim 1, characterized in that: When one side of the ruby ​​(31) is squeezed by force, the connecting rod (311) drives the coil (33) to move.

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