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 PDFInfo
- 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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- Prior art keywords
- bridge
- low frequency
- processing system
- super low
- frequency vibration
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
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
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.
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 |
Family
ID=58620087
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)
| 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 |
-
2016
- 2016-10-17 CN CN201621127484.7U patent/CN206146523U/en not_active Expired - Fee Related
Cited By (1)
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |