CN106323159A - Strain gauge of double vibratory string type - Google Patents
Strain gauge of double vibratory string type Download PDFInfo
- Publication number
- CN106323159A CN106323159A CN201610777219.1A CN201610777219A CN106323159A CN 106323159 A CN106323159 A CN 106323159A CN 201610777219 A CN201610777219 A CN 201610777219A CN 106323159 A CN106323159 A CN 106323159A
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- China
- Prior art keywords
- vibratory string
- strain gauge
- exciting
- vibration signal
- vibratory
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/24—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in magnetic properties
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention discloses a strain gauge of a double vibratory string type, and the strain gauge comprises two vibratory strings with different lengths, two shock excitation solenoid coils, and a detection instrument. Through the correlation processing of the frequencies, amplitudes and attenuation coefficients of vibration signals generated by the shock excitation of the vibratory strings with different lengths under the same tension strain, the strain gauge improves the sensitivity and confidence of the vibration signals, and effectively reduces the interference signals caused by temperature and external vibration.
Description
Art
The present invention relates to a kind of the cannot-harm-detection device, particularly relate to a kind of dual-vibrating-spring type strain gauge.
Background technology
Vibrating string extensometer is structural strain monitoring device conventional in engineering, due to the working environment of vibrating string extensometer
Complex, in actual application, its certainty of measurement can be by ambient temperature and the interference effect of Extraneous vibrations, due to these
The impact of factor, causes the effectiveness of data to reduce.
Summary of the invention
It is an object of the invention to overcome the deficiency of prior art, it is provided that a kind of dual-vibrating-spring type strain gauge, use two not
With vibratory string and two exciting solenoids of length, design a kind of dual-vibrating-spring type strain gauge.
The technical solution adopted for the present invention to solve the technical problems is: a kind of dual-vibrating-spring type strain gauge, including two not
Vibratory string, two exciting solenoids, detecting instruments with length, it is characterised in that: the vibratory string of said two different length is side by side
Parallel it is fixed between same front end seat and rear end seat so that the vibratory string of two different lengths is by identical tension；Described
Two exciting solenoids are respectively wound around on a vibratory string；Two exciting solenoids electrically connect with detecting instrument；Described inspection
Survey instrument vibratory string for excitation its winding of two exciting solenoid excitings, and measure the vibration signal of vibratory string；Described detection
The vibration signal parameter that two exciting solenoids are measured is compared by instrument and dependency processes, described vibration signal parameter
Including frequency, amplitude and attenuation quotient, described dependency processes the addition subtraction multiplication and division referring to data and the stress obtained according to experiment
Correlation function calculates, and to improve sensitivity and the confidence level of vibration signal, effectively reduces the interference that temperature, Extraneous vibrations etc. cause
Signal.
The invention has the beneficial effects as follows, a kind of dual-vibrating-spring type strain gauge, use the vibratory string of two different lengths and two swash
Shake solenoid, designs a kind of dual-vibrating-spring type strain gauge, by producing the vibratory string of different length exciting under identical tension
The dependency of the raw frequency of vibration signal, amplitude and attenuation quotient processes, and improves sensitivity and the confidence level of vibration signal, has
Effect reduces the interference signal that temperature, Extraneous vibrations etc. cause.
Below in conjunction with embodiment, the present invention is described in further detail, but a kind of dual-vibrating-spring type strain gauge of the present invention is not
It is confined to embodiment.
Accompanying drawing explanation
The present invention is further described for middle embodiment.
Fig. 1 is a kind of dual-vibrating-spring type strain gauge schematic diagram of the embodiment of the present invention.
In figure, 10. vibratory string, 11. vibratory strings, 20. exciting solenoids, 21. exciting solenoids, 30. front end seats, after 31.
End seat, 4. detecting instrument.
Detailed description of the invention
Embodiment, such as Fig. 1, a kind of dual-vibrating-spring type strain gauge, including 10,11, two excitings of vibratory string of two different lengths
Solenoid 20,21, detecting instrument 4, it is characterised in that: vibratory string 10,11 side by side parallel of said two different length is fixed on
Between same front end seat 30 and rear end seat 31 so that the vibratory string 10,11 of two different lengths is by identical tension；Described two
Individual exciting solenoid 20,21 is respectively wound around on a vibratory string 10,11；Two exciting solenoids 20,21 and detecting instrument 4
Electrical connection；Described detecting instrument 4 is for its vibratory string 10,11 being wound around of two exciting solenoid 20,21 excitings of excitation, and measures
The vibration signal of vibratory string 10,11；The vibration signal parameter that two exciting solenoids 20,21 are measured by described detecting instrument 4 is entered
Row comparison and dependency process, and described vibration signal parameter includes frequency, amplitude and attenuation quotient, and described dependency processes and refers to
The addition subtraction multiplication and division of data and the stress correlation function obtained according to experiment calculate, to improve sensitivity and the confidence of vibration signal
Degree, effectively reduces the interference signal that temperature, Extraneous vibrations etc. cause.
Above-described embodiment is only used for further illustrating a kind of dual-vibrating-spring type strain gauge of the present invention, but the present invention does not limit to
In embodiment, every above example is made according to the technical spirit of the present invention any simple modification, equivalent variations with repair
Decorations, each fall within the protection domain of technical solution of the present invention.
Claims (1)
1. a dual-vibrating-spring type strain gauge, including vibratory string, two exciting solenoids, the detecting instruments of two different lengths, its
It is characterised by: the vibratory string side by side parallel of said two different length is fixed between same front end seat and rear end seat；Described two
Individual exciting solenoid is respectively wound around on a vibratory string；Two exciting solenoids electrically connect with detecting instrument；Described detection
Instrument is for its vibratory string being wound around of two exciting solenoid excitings of excitation, and measures the vibration signal of vibratory string；Described detector
The vibration signal parameter that two exciting solenoids are measured is compared by device and dependency processes, described vibration signal parameter bag
Including frequency, amplitude and attenuation quotient, described dependency processes the addition subtraction multiplication and division referring to data and the stress phase obtained according to experiment
Pass function calculates, to improve sensitivity and the confidence level of vibration signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777219.1A CN106323159B (en) | 2016-08-31 | 2016-08-31 | A kind of dual-vibrating-spring type strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610777219.1A CN106323159B (en) | 2016-08-31 | 2016-08-31 | A kind of dual-vibrating-spring type strain gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106323159A true CN106323159A (en) | 2017-01-11 |
| CN106323159B CN106323159B (en) | 2018-08-03 |
Family
ID=57788556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610777219.1A Active CN106323159B (en) | 2016-08-31 | 2016-08-31 | A kind of dual-vibrating-spring type strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106323159B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608664A (en) * | 2019-09-30 | 2019-12-24 | 中铁第一勘察设计院集团有限公司 | Bridge type vibrating wire strain gauge based on online correction |
| CN111521316A (en) * | 2020-05-19 | 2020-08-11 | 兰州理工大学 | Multi-gear vibrating wire type bolt state monitoring device and use and identification method thereof |
| CN116481584A (en) * | 2023-04-27 | 2023-07-25 | 中国科学院武汉岩土力学研究所 | Intelligent frequency reading method and wireless vibrating wire type acquisition instrument suitable for low-temperature environment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986839B (en) * | 2019-12-26 | 2021-07-23 | 长安大学 | Double-vibrating-string strain gauge based on time division multiplexing and working method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070759A (en) * | 1989-05-12 | 1991-12-10 | Hoover Alan A | String vibration sustaining device |
| CN2170512Y (en) * | 1993-06-16 | 1994-06-29 | 山东矿业学院 | Double-coil steel-string exactor |
| CN2257019Y (en) * | 1995-09-08 | 1997-06-25 | 陕西青华机电研究所 | Differential vibrating wire accelerometer |
| CN2684149Y (en) * | 2003-07-25 | 2005-03-09 | 金坛市土木工程仪器厂 | Differential vibrating wire type clinometer |
| CN101762286A (en) * | 2010-01-08 | 2010-06-30 | 邓铁六 | Double-coil four-string restrict constant current steel chord self-excited excitation circuit |
-
2016
- 2016-08-31 CN CN201610777219.1A patent/CN106323159B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070759A (en) * | 1989-05-12 | 1991-12-10 | Hoover Alan A | String vibration sustaining device |
| CN2170512Y (en) * | 1993-06-16 | 1994-06-29 | 山东矿业学院 | Double-coil steel-string exactor |
| CN2257019Y (en) * | 1995-09-08 | 1997-06-25 | 陕西青华机电研究所 | Differential vibrating wire accelerometer |
| CN2684149Y (en) * | 2003-07-25 | 2005-03-09 | 金坛市土木工程仪器厂 | Differential vibrating wire type clinometer |
| CN101762286A (en) * | 2010-01-08 | 2010-06-30 | 邓铁六 | Double-coil four-string restrict constant current steel chord self-excited excitation circuit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608664A (en) * | 2019-09-30 | 2019-12-24 | 中铁第一勘察设计院集团有限公司 | Bridge type vibrating wire strain gauge based on online correction |
| CN111521316A (en) * | 2020-05-19 | 2020-08-11 | 兰州理工大学 | Multi-gear vibrating wire type bolt state monitoring device and use and identification method thereof |
| CN116481584A (en) * | 2023-04-27 | 2023-07-25 | 中国科学院武汉岩土力学研究所 | Intelligent frequency reading method and wireless vibrating wire type acquisition instrument suitable for low-temperature environment |
| CN116481584B (en) * | 2023-04-27 | 2024-04-09 | 中国科学院武汉岩土力学研究所 | Intelligent frequency reading method and wireless vibrating wire type acquisition instrument suitable for low-temperature environment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106323159B (en) | 2018-08-03 |
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