CN206146523U - Be used for super low frequency vibration signal processing system of bridge - Google Patents

Be used for super low frequency vibration signal processing system of bridge Download PDF

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Publication number
CN206146523U
CN206146523U CN201621127484.7U CN201621127484U CN206146523U CN 206146523 U CN206146523 U CN 206146523U CN 201621127484 U CN201621127484 U CN 201621127484U CN 206146523 U CN206146523 U CN 206146523U
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CN
China
Prior art keywords
bridge
low frequency
processing system
super low
frequency vibration
Prior art date
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
Application number
CN201621127484.7U
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Chinese (zh)
Inventor
罗东云
王萍
蔡苗苗
张友木
游芳
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Jiujiang University
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Jiujiang University
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Publication date
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Priority to CN201621127484.7U priority Critical patent/CN206146523U/en
Application granted granted Critical
Publication of CN206146523U publication Critical patent/CN206146523U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a be used for super low frequency vibration signal processing system of bridge, a serial communication port, including the super low frequency vibration sensor of a plurality of developments of connecting the bridge, a plurality of signal amplification circuit are connected respectively to the super low frequency vibration sensor of developments, signal amplification circuit connects filter circuit respectively, filter circuit all connects adc, adc connects the ARM treater, the display is connected to the ARM treater. The beneficial effect of the utility model: through setting up super low frequency vibration dynamic sensor, it is not only small, can realize the exact detection of bridge ultralow frequency absolute vibration signal, determine that vibration system's modal parameter estimates, guarantee the dough stability and the accuracy that detect, can monitor the multichannel simultaneously.

Description

One kind is used for bridge superlow frequency vibrating signal processing system
Technical field
This utility model is related to bridge superlow frequency vibrating detection technique field, it particularly relates to one kind is super for bridge Low-frequency vibration signal processing system.
Background technology
In engineering, the either vibration monitoring and fault diagnosis of Large Hydroelectric Set or precision machine tool, or bridge The vibration analysis of beam engineering structure and modal test, are required to detect intrasonic absolute vibration signal, and measure analysis it The superlow frequency vibrating signal that produces in running.In engineering, Jing frequently with the detection vibrated to bridge construction structural environment, Great quality problems, the reliability of inspection building structure are whether there is in construction, is assessed and is built to determine the dynamic trait of structure, veritify The safe coefficient of structure.The ambient vibration natural frequency of general bridge is more than relatively low, between 0.3Hz-10Hz. with large span The emergence of bridge, the frequency of the ambient vibration of these building structure is lower.These belong to superlow frequency vibrating signal, due to Amplitude change is slow, and the cycle is very long, the factor such as environmental disturbances and measuring system drift, for ultra-low frequency signal collection with The stability of processing system and the requirement of precision are all very high, and need the direct current for more focusing on signal special in circuit design Property, the integrity of signal DC characteristic is kept as far as possible.
For the problem in correlation technique, effective solution is not yet proposed at present.
Utility model content
The purpose of this utility model is to provide one kind for bridge superlow frequency vibrating signal processing system, can solve the problem that existing Bridge vibration detecting system is poor to the stability of superlow frequency vibrating signal detection, the not high technical problem of precision.
The purpose of this utility model is achieved through the following technical solutions:
One kind is used for bridge superlow frequency vibrating signal processing system, it is characterised in that including some dynamics of connection bridge Ultra-low Frequency Vibration Sensor, the dynamic Ultra-low Frequency Vibration Sensor connects respectively some signal amplification circuits, and the signal is put Big circuit connects respectively filter circuit, and the filter circuit is all connected with analog-digital converter, and the analog-digital converter connects ARM process Device, the arm processor connects display.
Further, the chip model of the amplifier is OP27B.
The beneficial effects of the utility model:By arranging superlow frequency vibrating dynamic pickup, not only small volume, and can be real The accurate detection of existing bridge intrasonic absolute vibration signal, determine the modal parameter estimation of vibrational system, it is ensured that detection is stablized Property and accuracy, while multichannel can be monitored.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to this A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is that the one kind according to this utility model embodiment is used for bridge superlow frequency vibrating signal processing system structure Schematic diagram;
Fig. 2 is that the one kind according to this utility model embodiment is filtered for bridge superlow frequency vibrating signal processing system Circuit diagram;
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole Embodiment.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained all belongs to In the scope of this utility model protection.
As shown in Figure 1-2, it is a kind of to be used for bridge superlow frequency vibrating signal processing system, including some dynamics of connection bridge Ultra-low Frequency Vibration Sensor, the dynamic Ultra-low Frequency Vibration Sensor connects respectively some signal amplification circuits, and the signal is put Big circuit connects respectively filter circuit, and the filter circuit is all connected with analog-digital converter, and the analog-digital converter connects ARM process Device, the arm processor connects display, and the chip model of the amplifier is OP27B.
The cut-off frequency of filter circuit is:Preferably, R in circuit14=1M, M are unit of resistance, and M is 1×106Ohmage, C40=300nF, nF are unit of capacity, and nF is 1 × 10-9Method, the cut-off frequency of such filter circuit is 0.5 hertz, the signal higher than 0.5 hertz of general bridge will be filtered out, and the chip model that amplifier is adopted is put for OP27B Big multipleThis filter circuit can filter useless signal wave, while useful signal wave is amplified into place Reason, is processed after the converted process of the incoming analog-digital converter of amplified signal wave into arm processor, and by showing Device is shown.
It is described in the utility model a kind of for bridge superlow frequency vibrating signal processing system, by arranging superlow frequency vibrating Dynamic pickup, not only small volume, and the accurate detection of bridge intrasonic absolute vibration signal can be realized, determine vibrational system Modal parameter estimation, it is ensured that the stability and accuracy of detection, while multichannel can be monitored.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit this utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in this utility model Protection domain within.

Claims (2)

1. it is a kind of to be used for bridge superlow frequency vibrating signal processing system, it is characterised in that super including some dynamics of connection bridge Low-frequency shock transducer, the dynamic Ultra-low Frequency Vibration Sensor connects respectively some signal amplification circuits, and the signal amplifies Circuit connects respectively filter circuit, and the filter circuit is all connected with analog-digital converter, and the analog-digital converter connects ARM process Device, the arm processor connects display.
2. it is according to claim 1 a kind of for bridge superlow frequency vibrating signal processing system, it is characterised in that described to put The chip model of big device is OP27B.
CN201621127484.7U 2016-10-17 2016-10-17 Be used for super low frequency vibration signal processing system of bridge Expired - Fee Related CN206146523U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621127484.7U CN206146523U (en) 2016-10-17 2016-10-17 Be used for super low frequency vibration signal processing system of bridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621127484.7U CN206146523U (en) 2016-10-17 2016-10-17 Be used for super low frequency vibration signal processing system of bridge

Publications (1)

Publication Number Publication Date
CN206146523U true CN206146523U (en) 2017-05-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621127484.7U Expired - Fee Related CN206146523U (en) 2016-10-17 2016-10-17 Be used for super low frequency vibration signal processing system of bridge

Country Status (1)

Country Link
CN (1) CN206146523U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750974A (en) * 2020-06-30 2020-10-09 天津市职业大学 Bridge pier vibration measurement system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111750974A (en) * 2020-06-30 2020-10-09 天津市职业大学 Bridge pier vibration measurement system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170503

Termination date: 20171017

CF01 Termination of patent right due to non-payment of annual fee