CN204064530U - A kind of no trace force test system based on micro electronmechanical acceleration chip - Google Patents
A kind of no trace force test system based on micro electronmechanical acceleration chip Download PDFInfo
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- CN204064530U CN204064530U CN201420430648.8U CN201420430648U CN204064530U CN 204064530 U CN204064530 U CN 204064530U CN 201420430648 U CN201420430648 U CN 201420430648U CN 204064530 U CN204064530 U CN 204064530U
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- 230000001133 acceleration Effects 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 14
- 238000004891 communication Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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Abstract
Based on a no trace force test system for micro electronmechanical acceleration chip, relate to bridge cable testing and monitoring technical field, the analysing terminal comprising signal pickup assembly and be connected by wireless signal with it, signal pickup assembly is arranged on drag-line; Signal pickup assembly comprises the wireless transmitter module of micro electronmechanical acceleration chip, signal amplifilter, digital to analog converter and the transmission inhaul cable vibration signal responding to inhaul cable vibration; Signal amplifilter is connected with the micro electronmechanical output terminal of acceleration chip, the input end of digital to analog converter respectively, and the output terminal of digital to analog converter is connected with wireless transmitter module; Analysing terminal comprises the signal processing module of wireless receiving module, in real time display waveform signal and the real time spectral analysis receiving wireless transmitter module transmission vibration signal, and wireless receiving module is connected with signal processing module.This system bulk quality is little, cheap, it is low to consume energy, resonance frequency is high and the response time is short, reduces testing cost and reduces potential safety hazard.
Description
Technical field
The utility model relates to bridge cable testing and monitoring technical field, is specifically a kind of no trace force test system based on micro electronmechanical acceleration chip.
Background technology
Drag-line is power transmission important in rope bridge girder construction and primary structure member, generally comprises the hoist cable (or suspension rod) of the suspension cable of cable-stayed bridge, suspension bridge and arch bridge.The large young pathbreaker of Cable power directly has influence on full-bridge at construction and safety case during one's term of military service, and therefore its Measurement accuracy has very important effect in such bridge construction control, later stage bridge maintenance management and health monitoring.
In current domestic and international project application, the measuring method that Cable power is commonly used has oil pressure gauge determination method, pressure transducer method, electromagnetic measurement method, vibration frequency method etc.Vibration frequency method due to measure simple and easy to do, accuracy is high, with low cost and obtain wide popularization and application, one-tenth bridge drag-line domestic at present detects or health monitoring work is all adopt frequency method.It is generally that degree of will speed up sensor is fixed on drag-line surface pickup vibration signal that frequency method measures Suo Li, through signal amplification, filtering and digital-to-analog conversion, again spectrum analysis is carried out to signal and obtain drag-line natural frequency, then calculated the rope force value of drag-line by the funtcional relationship between drag-line frequency and Suo Li.
Based on cable force measurement instrument widespread use in engineering of frequency method, existing cable force measurement instrument adopts traditional acceleration transducer and wire communication mode usually, and need to be equipped with special signal transacting and analytical equipment, complete laggard line frequency analysis of spectrum in signals collecting and obtain drag-line natural frequency.When engineering site uses, wire communication mode can reduce work efficiency, and circuit easily damages and there is certain potential safety hazard; When measuring Cable power with frequency method during bridge operation, vehicular traffic and environmental load all can produce certain influence to inhaul cable vibration, the signal quality of Different periods collection has difference relative to the measurement of drag-line natural frequency, spectrum analysis is analyzed after signals collecting completes again, then can not judge the vibration signal quality gathered in time, likely obtain inaccurate drag-line natural frequency.
In addition, traditional sensor profile is column type, and some sensor base have a circle magnet, are adsorbed on drag-line on the surface during for measuring, and what have does not then have, then need with rope band colligation on drag-line.When sensor is fixed on bridge cable, sensor bottom surface and drag-line surface contact, because drag-line surface is the face of cylinder, and traditional sensors bottom surface is plane or single circular arc camber, therefore the contact between sensor and drag-line is single line contact, this fixed form is very infirm, can produce certain impact to the quality of collection signal.
Utility model content
For the defect existed in prior art, the purpose of this utility model is to provide a kind of no trace force test system based on micro electronmechanical acceleration chip, the utility model has that volume mass is little, cheap, consume energy low, the advantage such as resonance frequency is high and the response time is short, reduces testing cost and reduces potential safety hazard.
For reaching above object, the technical scheme that the utility model is taked is: a kind of no trace force test system based on micro electronmechanical acceleration chip, the analysing terminal that system is comprised signal pickup assembly and is connected by wireless signal with it, described signal pickup assembly is arranged on drag-line; Signal pickup assembly comprises the wireless transmitter module of micro electronmechanical acceleration chip, signal amplifilter, digital to analog converter and the transmission inhaul cable vibration signal responding to inhaul cable vibration; Described signal amplifilter is connected with the micro electronmechanical output terminal of acceleration chip, the input end of digital to analog converter respectively, and the output terminal of digital to analog converter is connected with wireless transmitter module; Analysing terminal comprises the signal processing module of wireless receiving module, in real time display waveform signal and the real time spectral analysis receiving wireless transmitter module transmission vibration signal, and wireless receiving module is connected with signal processing module.
On the basis of technique scheme, described analysing terminal is that smart mobile phone or PC are dull and stereotyped.
On the basis of technique scheme, described signal amplifilter comprises two-stage amplifying circuit, Anti-aliasing Filter Circuits and 128 rank digital filters.
On the basis of technique scheme, described signal pickup assembly communicates with adopting wireless wifi network between analysing terminal.
On the basis of technique scheme, the shell of signal pickup assembly and the position of drag-line exterior surface are bicircular arcs curved surface, and the xsect at itself and drag-line exterior surface position is two-point contact.
The beneficial effects of the utility model are:
1, the utility model have employed micro electronmechanical acceleration chip, compared with the conventional acceleration sensor of same level performance, has that volume mass is little, cheap, consume energy low, the advantage such as resonance frequency is high and the response time is short.
2, the utility model adopt the smart mobile phone carried with of people or PC dull and stereotyped as analysing terminal, instead of traditional data processing and inversion equipment, reduce testing cost.
3, adopt wireless wifi network to carry out data communication in the utility model between signal pickup assembly and analysing terminal, there is not wire communication line, convenient and swift during on-the-spot test, and reduce potential safety hazard.
4, analysing terminal of the present utility model carries out the display of real-time vibrational waveform and spectrum analysis, make engineering staff can conveniently judge collection signal quality and survey the accuracy of drag-line frequency.
5, in the utility model, the shell of signal pickup assembly and drag-line surface contact position are designed to bicircular arcs curved surface, and the xsect at itself and drag-line exterior surface position is two point contact, and therefore fixed effect is good, and inhaul cable vibration signal can be gathered preferably.
6, in the utility model, multiple signal pickup assembly fixed placement, on multiple drag-line, is set up and is formed cable tension test network, can monitor comprehensively and effectively bridge.
Accompanying drawing explanation
Fig. 1 is the structural representation based on the no trace force test system of micro electronmechanical acceleration chip in the utility model embodiment;
Fig. 2 is the structural representation of signal pickup assembly in the utility model embodiment;
Fig. 3 is the composition frame chart based on the no trace force test system of micro electronmechanical acceleration chip in the utility model embodiment.
Reference numeral:
1-signal pickup assembly; 11-micro electronmechanical acceleration chip; 12-signal amplifilter; 13-digital to analog converter; 14-wireless transmitter module;
2-analysing terminal; 21-wireless receiving module; 22-signal processing module;
3-drag-line.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Shown in Figure 1, a kind of no trace force test system based on micro electronmechanical acceleration chip, the analysing terminal 2 comprising signal pickup assembly 1 and be connected by wireless signal with it, described signal pickup assembly 1 is arranged on drag-line 3.
Shown in Figure 2, the shell of signal pickup assembly 1 and the position of drag-line 3 exterior surface are bicircular arcs curved surface, the xsect at itself and drag-line 3 exterior surface position is doublet contact, the drag-line 3 when different-diameter in front axle beam can be adapted to, doublet contact with drag-line 3 way of contact, fixed form is firmly effective, can avoid the fixing firm not certain interference brought signals collecting on drag-line 3 of traditional sensors form.
Preferably, described analysing terminal 2 is that smart mobile phone or PC are dull and stereotyped.The smart mobile phone utilizing people to carry with or PC flat board, convenient and swift, no longer need extra analyzing and processing equipment; Instead of traditional data processing and inversion equipment, reduce testing cost.
Preferably, described signal pickup assembly 1 communicates with adopting wireless wifi network between analysing terminal 2, does not re-use wire communication mode, can increase work efficiency, and reduces potential safety hazard.
Shown in Figure 3, signal pickup assembly 1 comprises micro electronmechanical (MEMS) acceleration chip 11 that induction drag-line 3 vibrates, signal amplifilter 12, digital to analog converter 13, sends the wireless transmitter module 14 of drag-line 3 vibration signal, the conventional acceleration sensor that the utility model adopts micro electronmechanical acceleration chip to replace, has that volume mass is little, cheap, consume energy low, the advantage such as resonance frequency is high and the response time is short.Described signal amplifilter 12 is connected with the output terminal of micro electronmechanical acceleration chip 11, the input end of digital to analog converter 13 respectively, and the output terminal of digital to analog converter 13 is connected with wireless transmitter module 14; Described signal amplifilter 12 comprises two-stage amplifying circuit, Anti-aliasing Filter Circuits and 128 rank digital filters, can effective compressed signal noise, improves the signal to noise ratio (S/N ratio) of vibration signal further.
Analysing terminal 2 comprises wireless receiving module 21 and signal processing module 22, and wireless receiving module 21 is connected with signal processing module 22; Described wireless receiving module 21 receives drag-line 3 vibration signal that wireless transmitter module 14 sends over, and carries out real-time waveform Signal aspects and real time spectral analysis by signal processing module 22.
Using method of the present utility model:
When carrying out the measurement of bridge cable 3 Suo Li, signal pickup assembly 1 is fixed on bridge cable 3, micro electronmechanical acceleration chip 11 gathers the vibration signal of drag-line 3 and converts analog voltage signal to, then amplification is carried out and filtering through signal filtering amplifier 12 pairs of vibration signals, to remove certain noise factor, next change into digital signal by digital to analog converter 13, then be sent to intelligent mobile phone terminal 2 through wireless transmitter module 14.In intelligent mobile phone terminal 2, wireless receiving module 21 receives the vibration signal from signal pickup assembly 1, and signal processing module 22 carries out real-time waveform Signal aspects and real time spectral analysis.
The utility model is not only confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the utility model or akin technical scheme, all within its protection domain.
Claims (5)
1. the no trace force test system based on micro electronmechanical acceleration chip, it is characterized in that: the analysing terminal (2) that system is comprised signal pickup assembly (1) and is connected by wireless signal with it, described signal pickup assembly (1) is arranged on drag-line (3);
Signal pickup assembly (1) comprise induction drag-line (3) vibrate micro electronmechanical acceleration chip (11), signal amplifilter (12), digital to analog converter (13) and transmission drag-line (3) vibration signal wireless transmitter module (14); Described signal amplifilter (12) is connected with the output terminal of micro electronmechanical acceleration chip (11), the input end of digital to analog converter (13) respectively, and the output terminal of digital to analog converter (13) is connected with wireless transmitter module (14);
Analysing terminal (2) comprises the signal processing module (22) of wireless receiving module (21), in real time display waveform signal and the real time spectral analysis receiving wireless transmitter module (14) transmission vibration signal, and wireless receiving module (21) is connected with signal processing module (22).
2. as claimed in claim 1 based on the no trace force test system of micro electronmechanical acceleration chip, it is characterized in that: described analysing terminal (2) is smart mobile phone or PC flat board.
3., as claimed in claim 1 based on the no trace force test system of micro electronmechanical acceleration chip, it is characterized in that: described signal amplifilter (12) comprises two-stage amplifying circuit, Anti-aliasing Filter Circuits and 128 rank digital filters.
4., as claimed in claim 1 based on the no trace force test system of micro electronmechanical acceleration chip, it is characterized in that: between described signal pickup assembly (1) with analysing terminal (2), adopt wireless wifi network to communicate.
5. as claimed in claim 1 based on the no trace force test system of micro electronmechanical acceleration chip, it is characterized in that: the shell of signal pickup assembly (1) and the position of drag-line (3) exterior surface are bicircular arcs curved surface, the xsect at itself and drag-line (3) exterior surface position is two-point contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430648.8U CN204064530U (en) | 2014-07-31 | 2014-07-31 | A kind of no trace force test system based on micro electronmechanical acceleration chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420430648.8U CN204064530U (en) | 2014-07-31 | 2014-07-31 | A kind of no trace force test system based on micro electronmechanical acceleration chip |
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| Publication Number | Publication Date |
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| CN204064530U true CN204064530U (en) | 2014-12-31 |
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| CN201420430648.8U Expired - Lifetime CN204064530U (en) | 2014-07-31 | 2014-07-31 | A kind of no trace force test system based on micro electronmechanical acceleration chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106617907A (en) * | 2016-10-09 | 2017-05-10 | 全普光电科技(上海)有限公司 | Healthy mattress |
| CN111242058A (en) * | 2020-01-16 | 2020-06-05 | 江苏东印智慧工程技术研究院有限公司 | Android and HHT-based time-varying cable force identification method |
-
2014
- 2014-07-31 CN CN201420430648.8U patent/CN204064530U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106617907A (en) * | 2016-10-09 | 2017-05-10 | 全普光电科技(上海)有限公司 | Healthy mattress |
| CN111242058A (en) * | 2020-01-16 | 2020-06-05 | 江苏东印智慧工程技术研究院有限公司 | Android and HHT-based time-varying cable force identification method |
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| GR01 | Patent grant | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: 103 No. 430000 Hubei Province in Qiaokou District of Wuhan city road construction Patentee after: BRIDGE SCIENCE AND TECHNOLOGY INSTITUTE CO., LTD., CHINA RAILWAY ENGINEERING GROUP Patentee after: Group Co., Ltd., Zhongtie Daqiao Bureau Address before: 103 No. 430000 Hubei Province in Qiaokou District of Wuhan city road construction Patentee before: China Zhongtie Major Bridge Engineering Group Co., Ltd. Patentee before: Group Co., Ltd., Zhongtie Daqiao Bureau |