CN213632594U - Vibration sensor for LMS test bench - Google Patents
Vibration sensor for LMS test bench Download PDFInfo
- Publication number
- CN213632594U CN213632594U CN202022697993.6U CN202022697993U CN213632594U CN 213632594 U CN213632594 U CN 213632594U CN 202022697993 U CN202022697993 U CN 202022697993U CN 213632594 U CN213632594 U CN 213632594U
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- vibration
- connecting block
- vibration sensor
- coil
- lms test
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Abstract
The utility model discloses a vibration sensor for LMS test bench, which comprises a housin, the casing includes the protective housing, the inside of protective housing is provided with strong magnetic barrier layer, the inside of casing is provided with the cavity, the inside of cavity is provided with the pressure diaphragm, the last fixed surface of pressure diaphragm is connected with the vibrating diaphragm, the both sides of vibrating diaphragm are provided with exciting coil and pick up the coil of shaking, exciting coil all is provided with the connecting wire with the output of picking up the coil of shaking, the casing has two, and is the right angle and arranges. The utility model discloses, through being provided with two detection device, and relative right angle arranges, can directly carry out the detection of two directions, be fixed in same position moreover, alleviate the work load of experiment, reduced the error in detecting simultaneously, through setting up strong magnetic barrier layer, can completely cut off the influence of external magnetic field to its inside for the vibration parameter that it detected is more accurate, and the reduction error makes the experiment go on smoothly.
Description
Technical Field
The utility model relates to an experiment of experiment rack field especially relates to a vibration sensor for LMS test bench.
Background
In the highly developed modern industry, the development of modern test technology towards digitization and informatization is a certain development trend, and the most front end of the test system is a sensor, which is the soul of the whole test system and is listed as the top technology by countries in the world, in particular to the IC technology and the computer technology which are rapidly developed in recent years, so that a good and reliable scientific and technical basis is provided for the development of the sensor. The development of the sensor is changed day by day, and digitization, multifunction and intellectualization are important characteristics of the development of the modern sensor.
The vibration sensor is one of the key parts in the testing technology, and the function of the vibration sensor is mainly to receive mechanical quantity and convert the mechanical quantity into electric quantity proportional to the mechanical quantity. Since it is also an electromechanical conversion device. We sometimes refer to it as a transducer, a vibration pickup, etc.
The vibration test experiment has very important effect, and for different mechanical devices, the vibration condition of each part of the mechanical device is analyzed, so that the working performance of the mechanical device is improved conveniently, and the influence on the work of the mechanical device due to resonance is avoided. However, the existing vibration sensor can only detect the vibration in one direction in the experimental process, a plurality of sensors are needed for measuring the vibration in different directions, and the deviation of the detection position is large, so that the error of experimental data is large, and the data in the same position cannot be accurately obtained.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the vibration sensor who proposes a kind of being used for LMS test bench.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a vibration sensor for an LMS test bench comprises a shell, wherein the shell comprises a protective shell, and a strong magnetic barrier layer is arranged inside the protective shell;
a cavity is formed in the shell, a pressure diaphragm is arranged in the cavity, the upper surface of the pressure diaphragm is fixedly connected with a vibration diaphragm, two sides of the vibration diaphragm are provided with an excitation coil and a vibration pickup coil, the output ends of the excitation coil and the vibration pickup coil are provided with connecting wires, and the two shells are arranged in a right angle;
the lower fixed surface of casing is connected with the connecting block, the front fixed surface of connecting block is connected with magnet, the right flank of connecting block is provided with the adhesion layer.
As a further description of the above technical solution:
the connecting block is characterized in that a penetrating hole is formed in the connecting block, and the inside of the penetrating hole is movably connected with the connecting wire.
As a further description of the above technical solution:
and one end of the connecting wire, which is far away from the excitation coil and the vibration pickup coil, is fixedly connected with an amplifying circuit, and the excitation coil, the vibration pickup coil and the amplifying circuit form a positive feedback oscillating circuit.
As a further description of the above technical solution:
the lower surface of connecting block is provided with the spliced pole, connecting wire and spliced pole electric connection, and the quantity of spliced pole is four.
As a further description of the above technical solution:
the position of the amplifying circuit is positioned inside the connecting block.
As a further description of the above technical solution:
the connecting block is cuboid, and the material used by the strong magnetic barrier layer is soft magnetic material, preferably iron-silicon alloy.
As a further description of the above technical solution:
the left side of connecting block is provided with the connecting plate, the inside of connecting plate is provided with the fixed orifices.
As a further description of the above technical solution:
the side surface of the connecting block is provided with a groove, and the shape of the groove is arc-shaped.
The utility model discloses following beneficial effect has:
1. compared with the prior art, this a vibration sensor for LMS test bench through being provided with two detection device, and relative right angle arranges, can directly carry out the detection of two directions, is fixed in same position moreover, alleviates the work load of experiment, has reduced the error in the detection simultaneously.
2. Compared with the prior art, this a vibration sensor for LMS test bench through setting up strong magnetic barrier layer, can completely cut off the influence of external magnetic field to its inside for the vibration parameter that it detected is more accurate, reduces the error, makes the experiment go on smoothly.
3. Compared with the prior art, this a vibration sensor for LMS test bench is convenient for fix it through being provided with magnet and tie coat, simplifies fixed step, is convenient for change the machinery of experiment simultaneously.
4. Compared with the prior art, this a vibration sensor for LMS test bench is through being provided with curved recess, is convenient for realize the fixed of multiple different surfaces, enlarges application range, and area of contact increases, makes fixed more firm.
Drawings
Fig. 1 is a schematic overall structural diagram of a vibration sensor for an LMS test stand according to the present invention;
fig. 2 is an oblique view of a vibration sensor for an LMS test stand according to the present invention;
fig. 3 is a schematic diagram of an internal structure of a vibration sensor for an LMS test stand according to the present invention;
fig. 4 is a side view of a vibration sensor for an LMS test stand according to the present invention.
Illustration of the drawings:
1. a housing; 11. a protective shell; 12. a ferromagnetic barrier layer; 2. a cavity; 3. a pressure diaphragm; 4. vibrating the diaphragm; 5. exciting a coil; 6. a vibration pickup coil; 7. connecting blocks; 8. a magnet; 9. and (6) bonding layers.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1-4, the present invention provides a vibration sensor for an LMS test bench: including casing 1, casing 1 includes protective housing 11, protects inside components and parts, and the inside of protective housing 11 is provided with strong magnetic barrier layer 12, blocks outside magnetic field, prevents that magnetic field from causing the influence to its inside, and the used material of strong magnetic barrier layer 12 is soft magnetic material, and the magnetic permeability is better, is the ferrosilicon alloy best.
The shell 1 is internally provided with two cavities 2, a pressure diaphragm 3 is arranged in each cavity 2, hand pressure is used for deforming, the upper surface of each pressure diaphragm 3 is fixedly connected with a vibration diaphragm 4, each pressure diaphragm 3 deforms to cause the tension of each vibration diaphragm 4 to change, two sides of each vibration diaphragm 4 are provided with an excitation coil 5 and a vibration pickup coil 6, the vibration frequency of each vibration diaphragm 4 is detected, output ends of the excitation coil 5 and the vibration pickup coil 6 are respectively provided with a connecting wire, one end of each connecting wire, far away from the excitation coil 5 and one end of each vibration pickup coil 6, is fixedly connected with an amplifying circuit, the amplifying circuit is positioned in a connecting block 7, the excitation coil 5, the vibration pickup coil 6 and the amplifying circuit form a positive feedback oscillating circuit to supplement weak vibration signals and give out signals of the vibration frequency of the vibration diaphragms 4, the shell 1 is provided with two cavities and arranged at right angles to detect transverse and vertical bidirectional vibration, the detection is more accurate.
The lower surface of the shell 1 is fixedly connected with a connecting block 7 for connecting the two shells 1 and fixing the position of the sensor, the connecting block 7 is cuboid, so that the connecting contact surface is enlarged, the left side surface of the connecting block 7 is provided with a connecting plate, a fixing hole is arranged inside the connecting plate, a penetrating hole is arranged inside the connecting block 7, the inside of the penetrating hole is movably connected with the connecting wire, the side surface of the connecting block 7 is provided with a groove, and the shape of recess is convex, is convenient for adapt to the machinery of different shapes, and the front surface fixed connection of connecting block 7 has magnet 8, uses magnetic force to connect, and the right flank of connecting block 7 is provided with adhesion layer 9, uses glue to connect, is convenient for dismantle, and the lower surface of connecting block 7 is provided with the spliced pole, connecting wire and spliced pole electric connection, and the quantity of spliced pole is four, is convenient for be connected with the external world.
The working principle is as follows: when testing, through placing machinery on the testboard, fix sensor and machinery through connecting block 7, when testing, can measure the vibration of two directions simultaneously, when X, Y to sine experiment is being carried out, need not change vibration sensor, can continue to test, it is comparatively convenient, the step of experiment has been simplified, the frequency of holding the vibration that can be more accurate, when testing another machinery, through manual taking off can, be convenient for connect, do not use under the experimental situation, can connect through the stationary blade, make to connect more fixedly.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (8)
1. A vibration sensor for an LMS test bench comprising a housing (1), characterized in that: the shell (1) comprises a protective shell (11), and a strong magnetic barrier layer (12) is arranged inside the protective shell (11);
a cavity (2) is formed in the shell (1), a pressure diaphragm (3) is arranged in the cavity (2), a vibration diaphragm (4) is fixedly connected to the upper surface of the pressure diaphragm (3), two sides of the vibration diaphragm (4) are provided with an excitation coil (5) and a vibration pickup coil (6), connecting wires are arranged at the output ends of the excitation coil (5) and the vibration pickup coil (6), and the two shells (1) are arranged at a right angle;
the lower fixed surface of casing (1) is connected with connecting block (7), the preceding fixed surface of connecting block (7) is connected with magnet (8), the right flank of connecting block (7) is provided with bonding layer (9).
2. The vibration sensor for an LMS test stand according to claim 1, wherein: the connecting block (7) is internally provided with a penetration hole, and the inside of the penetration hole is movably connected with the connecting wire.
3. The vibration sensor for an LMS test stand according to claim 1, wherein: the connecting wire is far away from one end of the exciting coil (5) and one end of the vibration pickup coil (6) and is fixedly connected with an amplifying circuit, and the exciting coil (5), the vibration pickup coil (6) and the amplifying circuit form a positive feedback oscillating circuit.
4. The vibration sensor for an LMS test stand according to claim 1, wherein: the lower surface of connecting block (7) is provided with the spliced pole, connecting wire and spliced pole electric connection, and the quantity of spliced pole is four.
5. A vibration sensor for an LMS test stand according to claim 3, wherein: the position of the amplifying circuit is positioned inside the connecting block (7).
6. The vibration sensor for an LMS test stand according to claim 1, wherein: the connecting block (7) is cuboid, and the material used by the strong magnetic barrier layer (12) is soft magnetic material.
7. The vibration sensor for an LMS test stand according to claim 1, wherein: the left side of connecting block (7) is provided with the connecting plate, the inside of connecting plate is provided with the fixed orifices.
8. The vibration sensor for an LMS test stand according to claim 1, wherein: the side surface of the connecting block (7) is provided with a groove, and the shape of the groove is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697993.6U CN213632594U (en) | 2020-11-20 | 2020-11-20 | Vibration sensor for LMS test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022697993.6U CN213632594U (en) | 2020-11-20 | 2020-11-20 | Vibration sensor for LMS test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213632594U true CN213632594U (en) | 2021-07-06 |
Family
ID=76635155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022697993.6U Expired - Fee Related CN213632594U (en) | 2020-11-20 | 2020-11-20 | Vibration sensor for LMS test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213632594U (en) |
-
2020
- 2020-11-20 CN CN202022697993.6U patent/CN213632594U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210706 Termination date: 20211120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |