CN113252160A - Vibration data acquisition and electric quantity conversion method for large-span bridge - Google Patents
Vibration data acquisition and electric quantity conversion method for large-span bridge Download PDFInfo
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- CN113252160A CN113252160A CN202110509930.XA CN202110509930A CN113252160A CN 113252160 A CN113252160 A CN 113252160A CN 202110509930 A CN202110509930 A CN 202110509930A CN 113252160 A CN113252160 A CN 113252160A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000013016 damping Methods 0.000 claims abstract description 14
- 238000011160 research Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 9
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- 230000009467 reduction Effects 0.000 claims description 8
- 230000001133 acceleration Effects 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 7
- 230000003993 interaction Effects 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/12—Measuring characteristics of vibrations in solids by using direct conduction to the detector of longitudinal or not specified vibrations
- G01H1/14—Frequency
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Abstract
The invention discloses a vibration data acquisition and electric quantity conversion method of a large-span bridge, which comprises a passive vibration-damping and current-collecting integrated device, wherein the passive vibration-damping and current-collecting integrated device comprises a support plate, two ends of the support plate are both connected with outer frames, the top end of the support plate is provided with a mass block, four corners of the bottom end of the mass block are respectively provided with a roller, two ends of the mass block and the outer frames are both connected with permanent magnets, and a coil is sleeved between the two permanent magnets, so that the passive vibration-damping and current-collecting integrated device not only can effectively reduce bridge vibration and collect vibration energy through the interaction of the permanent magnet coils to realize the conversion from environmental vibration energy to electric energy, green and environmental protection and high safety factor.
Description
Technical Field
The invention relates to the technical field of vibration data acquisition and electric quantity conversion, in particular to a vibration data acquisition and electric quantity conversion method for a large-span bridge.
Background
In order to ensure the safety of the bridge and predict the service life of the bridge, people install safety monitoring equipment at key parts of the structure of the bridge, and the monitoring equipment needs to supply power for a long time to meet the requirement of real-time safety monitoring on the bridge, but because the climate on a large-span bridge surface is influenced by various loads such as wind load, wave load and the like, the power supply of the monitoring equipment is often interfered, so that the method is also a research field which is quite concerned by people for converting environmental vibration energy into favorable electric energy; the environmental vibration problem of large-span bridge is incredibly avoided, environmental vibration is everywhere also in nature, in order to reduce the destructive effect and the environmental pollution that brings that environmental vibration produced human body, equipment etc. to the environmental vibration, people's design and research has made various damping devices, these damping devices generally convert vibrational energy into energy forms such as acoustic energy, heat energy and dissipate to atmospheric environment, therefore the energy of vibration does not obtain effective utilization, cause the waste of energy, on the other hand still can produce the secondary pollution of sound, heat to the environment, if can collect and utilize the partial vibration energy that damping device dissipated, not only can realize the secondary utilization of energy, can also reduce the pollution to the environment simultaneously.
Disclosure of Invention
The invention provides a vibration data acquisition and electric quantity conversion method for a large-span bridge, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the vibration data acquisition and electric quantity conversion method of the large-span bridge comprises a passive vibration reduction and current collection integrated device, wherein the passive vibration reduction and current collection integrated device comprises a supporting plate, outer frames are connected to two ends of the supporting plate, a mass block is placed at the top end of the supporting plate, idler wheels are installed at four corners of the bottom end of the mass block, permanent magnets are connected to two ends of the mass block and the outer frames, and coils are sleeved between the two permanent magnets.
According to the technical scheme, the passive vibration-damping and current-collecting integrated device is installed below the bridge.
According to the technical scheme, the vibration reappearance test platform of the bridge in the wind wave load excitation environment is characterized in that the vibration reappearance test platform comprises the following components in parts by weight of 1: an experiment platform model is constructed in a proportion of 500, a bridge model is arranged in a water tank, a wave making plate is arranged on the right side of the water tank to simulate wave load, a fan is arranged in front of the outer portion of the water tank to simulate wind load, and a passive vibration reduction and current collection integrated device is arranged below a bridge to perform experiments;
the method comprises the steps of respectively utilizing a laser displacement sensor to collect time domain signals of vibration signals of a bridge model, utilizing an FFT (fast Fourier transform) analyzer to convert the time domain signals into frequency domains, taking the attenuation rates of peak acceleration, peak displacement, root mean square acceleration and root mean square displacement as main evaluation standards, verifying the reliability and effectiveness of the vibration damper, and utilizing a signal collector to collect electric energy converted by the vibration damper in experiments.
According to the technical scheme, the conversion method comprises the steps of developing research and data collection work, reading and analyzing, further summarizing research results obtained by predecessors and the subject group in earlier project research, determining bridge working conditions, establishing a vibration time domain model under the response working conditions, analyzing vibration characteristics of the bridge excited by wind wave load, and researching vibration change rules of the bridge on the frequency domain.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure and safe and convenient use:
1. the passive nonlinear vibration damping and current collection integrated vibration device is provided for analyzing and researching the vibration under the excitation of a multi-load working condition and a low-frequency load aiming at the problems frequently occurring in the current bridge design, and can effectively reduce the vibration of a bridge.
2. The passive vibration reduction and current collection integrated device can effectively reduce bridge vibration, collects vibration energy sources through interaction of the permanent magnet coils, achieves conversion from environment vibration energy sources to electric energy, and is green and high in safety factor.
3. The vibration energy is converted into electric energy and provided for the safety monitoring equipment of the bridge, particularly, the safety of the bridge can be greatly improved under the severe environment condition, and the research of the project provides a powerful application basis for the safety design of the bridge in the future.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the calculation of the repulsive force of the permanent magnet according to the present invention;
FIG. 3 is a schematic diagram of the resulting repulsive force resultant of the permanent magnets of the present invention;
reference numbers in the figures: 1. a support plate; 2. an outer frame; 3. a mass block; 4. a roller; 5. a permanent magnet; 6. and a coil.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example (b): as shown in fig. 1, the invention provides a technical scheme, and the method for vibration data acquisition and electric quantity conversion of a large-span bridge comprises a passive vibration-damping and current-collecting integrated device, wherein the passive vibration-damping and current-collecting integrated device comprises a support plate 1, both ends of the support plate 1 are connected with outer frames 2, a mass block 3 is placed at the top end of the support plate 1, four corners of the bottom end of the mass block 3 are respectively provided with a roller 4, both ends of the mass block 3 and the outer frames 2 are respectively connected with permanent magnets 5, and a coil 6 is sleeved between the two permanent magnets 5.
When vibration reduction is carried out, the mass block 4 drives the permanent magnet 5 to move in the coil 6 to cut magnetic induction lines, so that electromotive force is generated, electric energy is output, vibration reduction is realized, and energy conversion is completed at the same time.
According to the technical scheme, the passive vibration-damping and current-collecting integrated device is arranged below the bridge.
According to the technical scheme, the vibration reappearance test platform of the bridge in the wind wave load excitation environment is characterized in that 1: an experiment platform model is constructed in a proportion of 500, a bridge model is arranged in a water tank, a wave making plate is arranged on the right side of the water tank to simulate wave load, a fan is arranged in front of the outer portion of the water tank to simulate wind load, and a passive vibration reduction and current collection integrated device is arranged below a bridge to perform experiments; the method comprises the steps of respectively utilizing a laser displacement sensor to collect time domain signals of vibration signals of a bridge model, utilizing an FFT (fast Fourier transform) analyzer to convert the time domain signals into frequency domains, taking the attenuation rates of peak acceleration, peak displacement, root mean square acceleration and root mean square displacement as main evaluation standards, verifying the reliability and effectiveness of the vibration damper, and utilizing a signal collector to collect electric energy converted by the vibration damper in experiments.
According to the technical scheme, the conversion method comprises the steps of developing research and data collection work, reading and analyzing, further summarizing research results obtained by predecessors and the subject group in earlier project research, determining bridge working conditions, establishing a vibration time domain model under the response working conditions, analyzing vibration characteristics of the bridge excited by wind wave load, and researching vibration change rules of the bridge on the frequency domain.
As shown in fig. 2-3: wherein the magnet parameters are as follows:
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 changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A vibration data acquisition and electric quantity conversion method for a large-span bridge is characterized by comprising the following steps: including passive form damping current collection integrated device, passive form damping current collection integrated device includes backup pad (1), backup pad (1) both ends all are connected with frame (2), quality piece (3) have been placed on backup pad (1) top, gyro wheel (4) are all installed in quality piece (3) bottom four corners, quality piece (3) both ends all are connected with permanent magnet (5), two coil (6) have been cup jointed between permanent magnet (5).
2. The vibration data acquisition and power conversion method for the large-span bridge according to claim 1, wherein the passive vibration damping and current collection integrated device is installed below the bridge.
3. The vibration data acquisition and electric quantity conversion method for the large-span bridge according to claim 2, wherein the vibration reproduction test platform of the bridge in the wind wave load excitation environment is characterized in that the vibration reproduction test platform comprises the following steps of 1: an experiment platform model is constructed in a proportion of 500, a bridge model is arranged in a water tank, a wave making plate is arranged on the right side of the water tank to simulate wave load, a fan is arranged in front of the outer portion of the water tank to simulate wind load, and a passive vibration reduction and current collection integrated device is arranged below a bridge to perform experiments;
the method comprises the steps of respectively utilizing a laser displacement sensor to collect time domain signals of vibration signals of a bridge model, utilizing an FFT (fast Fourier transform) analyzer to convert the time domain signals into frequency domains, taking the attenuation rates of peak acceleration, peak displacement, root mean square acceleration and root mean square displacement as main evaluation standards, verifying the reliability and effectiveness of the vibration damper, and utilizing a signal collector to collect electric energy converted by the vibration damper in experiments.
4. The method for vibration data acquisition and power conversion of a long-span bridge according to claim 3, wherein the conversion method comprises the steps of conducting research and data collection, conducting reading analysis, further summarizing research results obtained in earlier project research of predecessors and the subject group, establishing bridge working conditions, establishing a vibration time domain model under response working conditions, analyzing vibration characteristics of the bridge excited by wind and wave loads, and researching vibration change rules of the bridge on frequency domains.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110509930.XA CN113252160A (en) | 2021-05-11 | 2021-05-11 | Vibration data acquisition and electric quantity conversion method for large-span bridge |
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| CN202110509930.XA CN113252160A (en) | 2021-05-11 | 2021-05-11 | Vibration data acquisition and electric quantity conversion method for large-span bridge |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035347A (en) * | 2010-12-29 | 2011-04-27 | 湖南工程学院 | Large-scaled bridge vibration amplitude displacement power generator and application |
| CN102497133A (en) * | 2011-11-25 | 2012-06-13 | 河北工业大学 | Electromagnetic vibration generating device of permanent magnet and application thereof in vibration detection system |
| CN102493572A (en) * | 2011-12-27 | 2012-06-13 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Adjustable damping energy storage type tuned mass damper |
| US20160153829A1 (en) * | 2013-06-20 | 2016-06-02 | Per-Axel UHLIN | Vibration sensor |
| CN106411094A (en) * | 2016-11-30 | 2017-02-15 | 杨明远 | Potable permanent-magnet vibration generation power supply |
| CN106979816A (en) * | 2017-03-09 | 2017-07-25 | 江苏科技大学 | It is a kind of can self power generation encircling type marine riser vibration monitor system |
| CN111719725A (en) * | 2020-05-18 | 2020-09-29 | 长江大学 | Building vibration suppression and energy recovery device based on electromagnetic damping |
-
2021
- 2021-05-11 CN CN202110509930.XA patent/CN113252160A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035347A (en) * | 2010-12-29 | 2011-04-27 | 湖南工程学院 | Large-scaled bridge vibration amplitude displacement power generator and application |
| CN102497133A (en) * | 2011-11-25 | 2012-06-13 | 河北工业大学 | Electromagnetic vibration generating device of permanent magnet and application thereof in vibration detection system |
| CN102493572A (en) * | 2011-12-27 | 2012-06-13 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Adjustable damping energy storage type tuned mass damper |
| US20160153829A1 (en) * | 2013-06-20 | 2016-06-02 | Per-Axel UHLIN | Vibration sensor |
| CN106411094A (en) * | 2016-11-30 | 2017-02-15 | 杨明远 | Potable permanent-magnet vibration generation power supply |
| CN106979816A (en) * | 2017-03-09 | 2017-07-25 | 江苏科技大学 | It is a kind of can self power generation encircling type marine riser vibration monitor system |
| CN111719725A (en) * | 2020-05-18 | 2020-09-29 | 长江大学 | Building vibration suppression and energy recovery device based on electromagnetic damping |
Non-Patent Citations (1)
| Title |
|---|
| 倪玲: "塔式结构的振动控制分析研究" * |
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Application publication date: 20210813 |