CN204101168U - A kind of vibration transducer - Google Patents
A kind of vibration transducer Download PDFInfo
- Publication number
- CN204101168U CN204101168U CN201420616488.6U CN201420616488U CN204101168U CN 204101168 U CN204101168 U CN 204101168U CN 201420616488 U CN201420616488 U CN 201420616488U CN 204101168 U CN204101168 U CN 204101168U
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- CN
- China
- Prior art keywords
- vibration transducer
- housing
- electromagnet
- spring leaf
- strain gage
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a kind of vibration transducer, belongs to sensor technical field.It solve the change limited extent of vibration transducer ratio of damping in prior art, and the technical matters of control procedure inconvenience.This vibration transducer comprises housing, mass, spring leaf, the resistance strain gage with hollow cavity, one end of described spring leaf is fixed on the inwall of housing, one end is fixed with mass in addition, the upper and lower surface correspondence of described spring leaf is provided with several resistance strain gage, described resistance strain gage is connected with metering circuit, it is characterized in that, described housing cavity extend oil magnetic rheological liquid, housing exterior walls is provided with electromagnet.The utility model is beneficial to magnetic rheological liquid and electromagnet coordinates, and realizes significantly regulating fast vibration transducer ratio of damping, has the advantages such as the ratio of damping amplitude of accommodation is large, control is convenient.
Description
Technical field
The utility model relates to a kind of vibration transducer, the vibration transducer that particularly a kind of ratio of damping is adjustable.
Background technology
Existing resistance-strain type vibration transducer, there is a mass inside, the vibrations of mass cause spring leaf to bend, distortion, thus cause the resistance strain gage be pasted onto on spring leaf to produce strain, thus the resistance of resistance strain gage is changed, the bridge road that the change of resistance causes resistance strain gage to form occurs uneven, thus output voltage, so just can measure vibration acceleration and the vibration frequency of object being measured.
But due to the character of this kind of sensor mechanical structure, ratio of damping is fixed, the test frequency of sensor and amplitude is made to be suitable for certain scope restriction.For addressing this problem, existing technology adopts and pour silicone oil in sensor body, and to change the ratio of damping of seismic mass, but this method is not only to the change limited extent of ratio of damping, and control procedure is very inconvenient.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, propose a kind of ratio of damping amplitude of accommodation large, control vibration transducer easily.
The purpose of this utility model realizes by following technical proposal: a kind of vibration transducer, comprise housing, mass, spring leaf, the resistance strain gage with hollow cavity, one end of described spring leaf is fixed on the inwall of housing, one end is fixed with mass in addition, the upper and lower surface correspondence of described spring leaf is provided with several resistance strain gage, described resistance strain gage is connected with metering circuit, and described housing cavity is filled with magnetic rheological liquid, and housing exterior walls is provided with electromagnet.
In above-mentioned a kind of vibration transducer, described electromagnet is DC electromagnet.
In above-mentioned a kind of vibration transducer, the two poles of the earth of described electromagnet are connected in control circuit, are also in series with rheostat, power supply, switch and reometer successively in described control circuit.
In above-mentioned a kind of vibration transducer, described rheostat is slide rheostat.
Compared with prior art, the utility model is beneficial to magnetic rheological liquid and electromagnet coordinates, and realizes significantly regulating fast vibration transducer ratio of damping, has the advantages such as the ratio of damping amplitude of accommodation is large, control is convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, housing; 2, mass; 3, spring leaf; 4, resistance strain gage; 5, magnetic rheological liquid; 6, electromagnet; 7, metering circuit; 8, control circuit; 9, vibration source; 10, power supply; 11, rheostat; 12, reometer; 13, switch;
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in the figure, a kind of vibration transducer, comprise housing 1, mass 2, spring leaf 3, the resistance strain gage 4 with hollow cavity, one end of described spring leaf 3 is fixed on the inwall of housing 1, and one end is fixed with mass 2 in addition, and the upper and lower surface correspondence of described spring leaf is provided with several resistance strain gage 4, described resistance strain gage 4 is connected with metering circuit 7, described housing 1 lumen loading has magnetic rheological liquid 5, and housing 1 outer wall is provided with electromagnet 6, and described housing 1 is fixed on vibration source 9.
By controlling the electromagnetic field that electromagnet 6 produces, the viscosity coefficient making to be in the magnetic rheological liquid 5 under electromagnetic field effect changes, thus realizes the object significantly regulated fast to vibration transducer ratio of damping.
Specifically, described electromagnet 6 is DC electromagnets.It is convenient that DC electromagnet has control, and magnetic field is with or without reaching direct control by power-off; The intensity size in magnetic field, also can be controlled by electric current and coil two kinds of modes, not single; DC electromagnet can change the direction of magnetic pole by the access direction of electric current.
Specifically, the two poles of the earth of described electromagnet 6 are connected in control circuit 8, are also in series with rheostat 11, power supply 10, switch 13 and reometer 12 successively in described control circuit 8.The size of current in control circuit 8 can be realized by standardsizing rheostat 11, thus the intensity size in regulating magnet 6 magnetic field, switch 13 can control electromagnet 6 and whether produce magnetic field.
Specifically, described rheostat 11 is slide rheostats.Slide rheostat can arbitrarily regulate and can realize continuously changing resistance in its Standard resistance range, thus can realize the electric current that continuously changes in circuit.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ 1 herein, housing; 2, mass; 3, spring leaf; 4, resistance strain gage; 5, magnetic rheological liquid; 6, electromagnet; 7, metering circuit; 8, control circuit; 9, vibration source; 10, power supply; 11, rheostat; 12, reometer; 13, the term such as switch, but do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (4)
1. a vibration transducer, comprise the housing (1) with hollow cavity, mass (2), spring leaf (3), resistance strain gage (4), one end of described spring leaf (3) is fixed on the inwall of housing (1), one end is fixed with mass (2) in addition, the upper and lower surface correspondence of described spring leaf is provided with several resistance strain gage (4), described resistance strain gage (4) is connected with metering circuit (7), it is characterized in that, described housing (1) lumen loading has magnetic rheological liquid (5), housing (1) outer wall is provided with electromagnet (6).
2. a kind of vibration transducer according to claim 1, is characterized in that, described electromagnet (6) is DC electromagnet.
3. a kind of vibration transducer according to claim 2, it is characterized in that, the two poles of the earth of described electromagnet (6) are connected in control circuit (8), are also in series with rheostat (11), power supply (10), switch (13) and reometer (12) in described control circuit (8) successively.
4. a kind of vibration transducer according to claim 3, is characterized in that, described rheostat (11) is slide rheostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616488.6U CN204101168U (en) | 2014-10-23 | 2014-10-23 | A kind of vibration transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616488.6U CN204101168U (en) | 2014-10-23 | 2014-10-23 | A kind of vibration transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204101168U true CN204101168U (en) | 2015-01-14 |
Family
ID=52269587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420616488.6U Expired - Fee Related CN204101168U (en) | 2014-10-23 | 2014-10-23 | A kind of vibration transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204101168U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969825A (en) * | 2017-05-27 | 2017-07-21 | 山东罗泰风机有限公司 | A kind of Monitoring System of Fan Vibration |
| CN110332983A (en) * | 2019-06-21 | 2019-10-15 | 武汉科技大学 | A kind of sensor |
| CN111307273A (en) * | 2020-03-27 | 2020-06-19 | 重庆理工大学 | Inductance type vibration sensor based on magnetic sensitive material |
| CN112710381A (en) * | 2020-12-18 | 2021-04-27 | 重庆理工大学 | Vertical vibration detection device |
| WO2021121288A1 (en) * | 2019-12-17 | 2021-06-24 | 山东大学 | Real-time wear state monitoring device for tbm rotary cutter, and method |
-
2014
- 2014-10-23 CN CN201420616488.6U patent/CN204101168U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969825A (en) * | 2017-05-27 | 2017-07-21 | 山东罗泰风机有限公司 | A kind of Monitoring System of Fan Vibration |
| CN106969825B (en) * | 2017-05-27 | 2023-08-29 | 山东罗泰风机有限公司 | Fan vibration monitoring system |
| CN110332983A (en) * | 2019-06-21 | 2019-10-15 | 武汉科技大学 | A kind of sensor |
| WO2021121288A1 (en) * | 2019-12-17 | 2021-06-24 | 山东大学 | Real-time wear state monitoring device for tbm rotary cutter, and method |
| GB2611850A (en) * | 2019-12-17 | 2023-04-19 | Univ Shandong | Real-time wear state monitoring device for TBM rotary cutter, and method |
| GB2611850B (en) * | 2019-12-17 | 2023-10-11 | Univ Shandong | Real-time wear state monitoring device for TBM rotary cutter, and method |
| CN111307273A (en) * | 2020-03-27 | 2020-06-19 | 重庆理工大学 | Inductance type vibration sensor based on magnetic sensitive material |
| CN111307273B (en) * | 2020-03-27 | 2021-12-17 | 重庆理工大学 | Inductance type vibration sensor based on magnetic sensitive material |
| CN112710381A (en) * | 2020-12-18 | 2021-04-27 | 重庆理工大学 | Vertical vibration detection device |
| CN112710381B (en) * | 2020-12-18 | 2022-09-30 | 重庆理工大学 | Vertical vibration detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20151023 |
|
| EXPY | Termination of patent right or utility model |