CN204988496U - Two cantilever vibration sensor - Google Patents
Two cantilever vibration sensor Download PDFInfo
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- CN204988496U CN204988496U CN201520711147.1U CN201520711147U CN204988496U CN 204988496 U CN204988496 U CN 204988496U CN 201520711147 U CN201520711147 U CN 201520711147U CN 204988496 U CN204988496 U CN 204988496U
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- cantilever
- pair
- magnetic circuit
- permanent magnet
- sensing coil
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- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 229910000859 α-Fe Inorganic materials 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910052779 Neodymium Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical group [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Abstract
The utility model discloses a two cantilever vibration sensor, including the two cantilevers of U type, sensor coil and magnetic circuit, the relative setting of sensor coil and magnetic circuit and sets up an annular magnet gap of circle on the magnetic circuit on the inner wall of two cantilevers of the two cantilevers of U type, the one end of sensor coil is fixed on the two cantilevers of U type, and the other end of sensor coil is placed in ring shape magnet gap, magnetic circuit comprises permanent magnet, end terminal and magnetic pole piece, permanent magnet and end terminal rigid connection, and the concentric installation of permanent magnet and end terminal, magnetic pole piece sets up on permanent magnet. Reach and acquire the vibration signal in the very narrow frequency range of scope, realize the purpose that the high accuracy frequency select to the eigen vibration.
Description
Technical field
The utility model relates to field of sensing technologies, particularly, relates to a kind of two cantilever vibration sensor.
Background technology
Vibration transducer is a kind of energy converter of pickup inspected object mechanical vibration, and common form has following several.(1) electric vortex type, adopt eddy effect to be the Vibratory transducer of principle of work, it belongs to non-contacting sensor.(2) inductance type, according to a kind of vibration transducer of electromagnetic induction principle design.Induction type vibration sensor is provided with magnet and mechanical vibration parameter is converted into electric parameter signal by magnetic conductor, can be applicable to vibration velocity, the isoparametric measurement of acceleration.(3) condenser type, obtain variable capacitance by the change of gap or public area, then measure electric capacity and then obtain mechanical vibration parameter.(4) piezoelectric type, utilizes the piezoelectric effect of crystal to complete vibration survey, and after the vibration of testee is to piezoelectric vibration pickup mineralization pressure, crystal element will produce corresponding electric charge, charge number can be scaled vibration parameters.(5) resistance-strain type vibration, expresses a kind of vibration transducer of testee mechanical vibration amount with resistance change.But above-mentioned several vibration transducer all can not obtain vibration signal in the frequency range of narrow range.
Utility model content
The purpose of this utility model is, for the problems referred to above, proposes a kind of two cantilever vibration sensor, to realize the advantage realizing high precision frequency selection purposes for eigen vibration.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of two cantilever vibration sensor, comprise U-shaped pair of cantilever, sensing coil and magnetic circuit system, what described sensing coil was relative with magnetic circuit system is arranged on the inwall of two cantilevers of U-shaped pair of cantilever, and magnetic circuit system is arranged the magnetic gap of an annular, one end of sensing coil is fixed on U-shaped pair of cantilever, the other end of sensing coil is placed in annular magnetic gap, described magnetic circuit system is made up of permanent magnet, pole shoe and pole piece, described permanent magnet and pole shoe are rigidly connected, and the concentric installation of permanent magnet and pole shoe, described pole piece is arranged on permanent magnet.
Preferably, described sensing coil is copper or the enameled wire loop of alumina based material formation.
Preferably, described enameled wire loop is connected on U-shaped pair of cantilever by UV adhesive curing.
Preferably, the material of described U-shaped pair of cantilever is steel, wooden or carbon fiber matter.
Preferably, described permanent magnet is cylindrical, and the permanent magnet of column type is neodymium ferromagnet, Ferrite or samarium-cobalt magnet.
Preferably, magnetic circuit system is also connected on U-shaped pair of cantilever by UV adhesive curing.
Preferably, also comprise housing, described U-shaped pair of cantilever, sensing coil and magnetic circuit system are all arranged in housing, and housing arranges output interface, and described sensing coil is electrically connected with output interface.
Preferably, described case material is: ABS, PP, PC or PE.
Preferably, the stiff end of described U-shaped pair of cantilever is fixedly connected with housing.
The technical solution of the utility model has following beneficial effect:
The technical solution of the utility model, provides a kind of two cantilever vibration sensor, comprises U-shaped pair of cantilever, sensing coil and magnetic circuit system, by the adjustment of three parameters in installation site of the material to cantilever, jib-length and sensing coil and magnetic circuit system.Thus obtain very excellent frequency selectivity.Reach and obtain vibration signal in the frequency range of narrow range, realize the object of high precision frequency selection purposes for eigen vibration.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the two cantilever vibration sensors described in the utility model embodiment.
By reference to the accompanying drawings, in the utility model embodiment, Reference numeral is as follows:
The two cantilever of 1-U type; 2-sensing coil; 3-pole piece; 4-permanent magnet; 5-pole shoe; 6-housing; 7-output interface; The stiff end of the two cantilever of 8-U type.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
As shown in Figure 1, a kind of two cantilever vibration sensor, comprise U-shaped pair of cantilever 1, sensing coil 2 and magnetic circuit system, what sensing coil 2 was relative with magnetic circuit system is arranged on the inwall of two cantilevers of U-shaped pair of cantilever 1, and magnetic circuit system is arranged the magnetic gap of an annular, one end of sensing coil is fixed on U-shaped pair of cantilever 1, the other end of sensing coil 2 is placed in annular magnetic gap, magnetic circuit system is by permanent magnet 4, pole shoe 5 and pole piece 3 are formed, permanent magnet 4 and pole shoe 5 are rigidly connected, and the concentric installation of permanent magnet 4 and pole shoe 5, pole piece 3 is arranged on permanent magnet 4.
Technical solutions of the utility model adopt two cantilever as the frequency response structure of vibration transducer, and sensing coil and magnetic circuit system are relatively arranged on inside two cantilevers, sensing coil and side cantilever, and magnetic circuit system and opposite side cantilever maintaining rigidness connect.Can the response frequency of accurate adjustment sensor by the structural parameters adjusting two cantilever.Thus very excellent frequency selectivity can be obtained.
It is the steel of high elastic modulus, the material of wooden, carbon fiber matter that double-cantilever structure can be selected, and double-cantilever structure is U-shaped structure, by adjust two arm lengths and weight proportion obtain different response frequencies.
Sensing coil is copper or one in alumina based material, and enameled wire loop that is copper or aluminium matter is bound up on by UV adhesive curing inside an arm of U-shaped pair of cantilever.
In magnetic circuit system, the permanent magnet of column type can select the one in neodymium ferromagnet, Ferrite or samarium-cobalt magnet.
The permanent magnet of magnetic circuit system and pole shoe rigid connection, ensure that permanent magnet is installed with the structure of pole shoe is concentric, magnetic circuit system forms a narrow annular magnetic gap, and magnetic circuit system is also bound up on inside another arm of U-shaped pair of cantilever by UV adhesive curing, relative with sensing coil.
Sensing coil is placed in the annular magnetic gap space of magnetic circuit system, ensures mutually not interfere.
Two wire taps of sensing coil are fixed on by soldering on the pad of output interface 7, are realized the output of vibration signal by extraneous wire.
The housing 6 of sensor adopts the materials such as ABS, PP, PC, PE to make, and the stiff end of U-shaped pair of cantilever is fixed on housing 6.
The stiff end 8 of U-shaped pair of cantilever is fixedly connected with housing 6.
The operational process of numerous electronic product has the vibration frequency of its feature, therefore analyze its frequency spectrum can the running status of judgment device fast whether normal.Take design speed as the motor of 3000rmp be example, need the resonant frequency avoiding its single order---i.e. the frequency band of 50Hz.
Corresponding two this frequency range point of cantilever vibration Sensor monitoring of design.Adopt high density wood materials as U-shaped cantilever, copper enameled wire loop, as sensing coil, selects Ferrite as permanent magnet.
Copper enameled wire loop and magnetic circuit system are all bound up on two inner sides of U-shaped pair of cantilever by UV adhesive curing, toward each other.Ensure during installation that enameled wire loop sensing unit vibrates in magnetic gap mutually not interfere with the part of magnetic circuit.Sensor housing adopts ABS, and U-shaped pair of cantilever adopts hot-forming being fixed on housing.The assemble flow of vibration transducer is:
1, U-shaped pair of cantilever, sensing coil, magnetic circuit system, housing and signaling interface is processed;
2, sensing coil, magnetic circuit system UV are solidificated in the inner side of U-shaped pair of cantilever;
3, in hot-forming process, U-shaped pair of cantilever is fixed on sensor housing;
4, output interface is arranged on housing;
5, the tap lead of regular sensing coil, and lead-in wire is soldered on the pad of output interface;
6, adopt cover closure sensor, detection signal exports.
Sensor machines rear employing high performance PE glue and is fixed on electric machine casing, and connects two pads of output interface with high-quality oxygen-free copper signal cable.System can adopt Adio Spectrom Analyzer to detect the Vibration Condition of motor after installing.
The sensing coil that vibration signal obtains by being fixed on two cantilever is formed, and encapsulating housing plays good protection to whole sensor-based system.To be that the magnetic circuit system of main body is relative on double-cantilever structure set up for sensing coil and permanent magnet, sensing coil is in the axial region of annular magnetic gap of permanent magnet, two cantilever excited vibration, sensing coil vibrates cutting magnetic line in permanent magnet, induced signal electric current exports, and the spectrum analysis outputed signal through back segment obtains result of oscillation.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. a two cantilever vibration sensor, it is characterized in that, comprise U-shaped pair of cantilever, sensing coil and magnetic circuit system, what described sensing coil was relative with magnetic circuit system is arranged on the inwall of two cantilevers of U-shaped pair of cantilever, and magnetic circuit system is arranged the magnetic gap of an annular, one end of sensing coil is fixed on U-shaped pair of cantilever, the other end of sensing coil is placed in annular magnetic gap, described magnetic circuit system is by permanent magnet, pole shoe and pole piece are formed, described permanent magnet and pole shoe are rigidly connected, and the concentric installation of permanent magnet and pole shoe, described pole piece is arranged on permanent magnet.
2. according to claim 1 pair of cantilever vibration sensor, is characterized in that, described sensing coil is copper or the enameled wire loop of alumina based material formation.
3. according to claim 2 pair of cantilever vibration sensor, is characterized in that, described enameled wire loop is connected on U-shaped pair of cantilever by UV adhesive curing.
4. according to claim 1 pair of cantilever vibration sensor, is characterized in that, the material of described U-shaped pair of cantilever is steel, wooden or carbon fiber matter.
5. according to claim 1 pair of cantilever vibration sensor, is characterized in that, described permanent magnet is cylindrical, and the permanent magnet of column type is neodymium ferromagnet, Ferrite or samarium-cobalt magnet.
6. according to claim 1 pair of cantilever vibration sensor, is characterized in that, magnetic circuit system is also connected on U-shaped pair of cantilever by UV adhesive curing.
7. the two cantilever vibration sensors according to any one of claim 1 to 6, it is characterized in that, also comprise housing, described U-shaped pair of cantilever, sensing coil and magnetic circuit system are all arranged in housing, and housing arranges output interface, described sensing coil is electrically connected with output interface.
8. according to claim 7 pair of cantilever vibration sensor, is characterized in that, described case material is: ABS, PP, PC or PE.
9. according to claim 7 pair of cantilever vibration sensor, is characterized in that, the stiff end of described U-shaped pair of cantilever is fixedly connected with housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711147.1U CN204988496U (en) | 2015-09-15 | 2015-09-15 | Two cantilever vibration sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520711147.1U CN204988496U (en) | 2015-09-15 | 2015-09-15 | Two cantilever vibration sensor |
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| Publication Number | Publication Date |
|---|---|
| CN204988496U true CN204988496U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520711147.1U Active CN204988496U (en) | 2015-09-15 | 2015-09-15 | Two cantilever vibration sensor |
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| Country | Link |
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| CN (1) | CN204988496U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181114A (en) * | 2015-09-15 | 2015-12-23 | 国家电网公司 | Double-cantilever vibration sensor |
| CN109900927A (en) * | 2019-04-01 | 2019-06-18 | 中电科技集团重庆声光电有限公司 | A kind of piezoelectric acceleration sensor and preparation method thereof |
-
2015
- 2015-09-15 CN CN201520711147.1U patent/CN204988496U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181114A (en) * | 2015-09-15 | 2015-12-23 | 国家电网公司 | Double-cantilever vibration sensor |
| CN105181114B (en) * | 2015-09-15 | 2018-05-15 | 国家电网公司 | Double cantilever vibration sensors |
| CN109900927A (en) * | 2019-04-01 | 2019-06-18 | 中电科技集团重庆声光电有限公司 | A kind of piezoelectric acceleration sensor and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |