CN106323159B - A kind of dual-vibrating-spring type strain gauge - Google Patents
A kind of dual-vibrating-spring type strain gauge Download PDFInfo
- Publication number
- CN106323159B CN106323159B CN201610777219.1A CN201610777219A CN106323159B CN 106323159 B CN106323159 B CN 106323159B CN 201610777219 A CN201610777219 A CN 201610777219A CN 106323159 B CN106323159 B CN 106323159B
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- Prior art keywords
- vibratory string
- vibration signal
- exciting electromagnetic
- vibrating
- dual
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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 kind of dual-vibrating-spring type strain gauges, vibratory string, two exciting electromagnetic coils, detecting instruments including two different lengths, pass through the correlation processing of the frequency of the vibration signal that exciting generates under identical tensile stress of the vibratory string to different length, amplitude and attenuation coefficient, sensitivity and the confidence level for improving vibration signal, effectively reduce interference signal caused by temperature, Extraneous vibrations etc..
Description
Technical field
The present invention relates to a kind of non-destructive testing devices, more particularly to a kind of dual-vibrating-spring type strain gauge.
Background technology
Vibrating string extensometer is common structural strain monitoring device in engineering, due to the working environment of vibrating string extensometer
Complex, in actual application, measurement accuracy can be by environment temperature and the interference effect of Extraneous vibrations, due to these
The influence of factor causes the validity of data to reduce.
Invention content
It is an object of the invention to overcome the deficiency of the prior art, a kind of dual-vibrating-spring type strain gauge is provided, not using two
With the vibratory string of length and two exciting electromagnetic coils, a kind of dual-vibrating-spring type strain gauge is designed.
The technical solution adopted by 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 electromagnetic coils, detecting instruments with length, it is characterised in that：The vibratory string of described two different lengths is side by side
It is parallel to be fixed between the same preceding end seat and rear end seat so that the vibratory string of two different lengths is by identical tensile stress；It is described
Two exciting electromagnetic coils are respectively wound around on a vibratory string；Two exciting electromagnetic coils are electrically connected with detecting instrument；The inspection
It surveys instrument and is used to encourage the vibratory string of its winding of two exciting electromagnetic coil excitings, and measure the vibration signal of vibratory string；The detection
The vibration signal parameter that two exciting electromagnetic coils of instrument pair measure is compared and correlation processing, the vibration signal parameter
Including frequency, amplitude and attenuation coefficient, the correlation processing refers to the addition subtraction multiplication and division of data and the stress according to experiment acquisition
Correlation function calculates, and to improve sensitivity and the confidence level of vibration signal, effectively reduces and is interfered caused by temperature, Extraneous vibrations etc.
Signal.
The invention has the advantages that a kind of dual-vibrating-spring type strain gauge, swashed using the vibratory string and two of two different lengths
Shake electromagnetic coil, designs a kind of dual-vibrating-spring type strain gauge, and by the vibratory string to different length, exciting produces under identical tensile stress
The correlation processing of the frequency, amplitude and attenuation coefficient of raw vibration signal, improves sensitivity and the confidence level of vibration signal, has
Effect reduces interference signal caused by temperature, Extraneous vibrations etc..
Invention is further described in detail with reference to embodiments, but a kind of dual-vibrating-spring type strain gauge of the present invention is not
It is confined to embodiment.
Description of the drawings
The present invention is further described for middle embodiment below in conjunction with the accompanying drawings.
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 strings, 11. vibratory strings, 20. exciting electromagnetic coils, 21. exciting electromagnetic coils, end seat before 30., after 31.
End seat, 4. detecting instruments.
Specific implementation mode
Embodiment, such as Fig. 1, a kind of dual-vibrating-spring type strain gauge, including the vibratory string 10 of two different lengths, 11, two excitings
Electromagnetic coil 20,21, detecting instrument 4, it is characterised in that：Vibratory string 10,11 side by side parallel of described two different lengths are fixed on
Between the same preceding end seat 30 and rear end seat 31 so that the vibratory string 10,11 of two different lengths is by identical tensile stress；Described two
A exciting electromagnetic coil 20,21 is respectively wound around on a vibratory string 10,11；Two exciting electromagnetic coils 20,21 and detecting instrument 4
Electrical connection；The detecting instrument 4 is used to encourage the vibratory string 10,11 of its winding of two exciting electromagnetic coils 20,21 excitings, and measures
The vibration signal of vibratory string 10,11；The vibration signal parameter that the detecting instrument 4 measures two exciting electromagnetic coils 20,21 into
Row compares and correlation processing, and the vibration signal parameter includes frequency, amplitude and attenuation coefficient, and the correlation processing refers to
The addition subtraction multiplication and division of data and the stress correlation function calculating obtained according to experiment, to improve sensitivity and the confidence of vibration signal
Degree effectively reduces interference signal caused by temperature, Extraneous vibrations etc..
A kind of dual-vibrating-spring type strain gauge that above-described embodiment only is used for further illustrating the present invention, but the present invention does not limit to
It is every to any simple modification, equivalent variations made by above example and to repair according to the technical essence of the invention in embodiment
Decorations, each fall in the protection domain of technical solution of the present invention.
Claims (1)
1. a kind of dual-vibrating-spring type strain gauge, including the vibratory string of two different lengths, two exciting electromagnetic coils, detecting instruments,
It is characterized in that：The vibratory string side by side parallel of described two different lengths is fixed between the same preceding end seat and rear end seat so that two
The vibratory string of a different length is by identical tensile stress；Described two exciting electromagnetic coils are respectively wound around on a vibratory string；Two
Exciting electromagnetic coil is electrically connected with detecting instrument；The detecting instrument is used to encourage its winding of two exciting electromagnetic coil excitings
Vibratory string, and measure the vibration signal of vibratory string；Two exciting electromagnetic coils of the detecting instrument pair measure vibration signal parameter into
Row compares and correlation processing, and the vibration signal parameter includes frequency, amplitude and attenuation coefficient, and the correlation processing refers to
The addition subtraction multiplication and division of data and the stress correlation function calculating obtained according to experiment, to improve sensitivity and the confidence of vibration signal
Degree.
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 CN106323159A (en) | 2017-01-11 |
| CN106323159B true CN106323159B (en) | 2018-08-03 |
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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 |
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| CN (1) | CN106323159B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986839A (en) * | 2019-12-26 | 2020-04-10 | 长安大学 | A dual vibrating wire strain gauge based on time division multiplexing and its working method |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608664B (en) * | 2019-09-30 | 2024-07-05 | 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 |
| CN111521316B (en) * | 2020-05-19 | 2021-07-23 | 兰州理工大学 | A multi-position vibrating wire bolt condition monitoring device and its use and identification method |
| 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 |
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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986839A (en) * | 2019-12-26 | 2020-04-10 | 长安大学 | A dual vibrating wire strain gauge based on time division multiplexing and its working method |
| CN110986839B (en) * | 2019-12-26 | 2021-07-23 | 长安大学 | A dual vibrating wire strain gauge based on time division multiplexing and its working method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106323159A (en) | 2017-01-11 |
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