CN201622354U - Three-way low-frequency piezoelectric digital seismograph - Google Patents
Three-way low-frequency piezoelectric digital seismograph Download PDFInfo
- Publication number
- CN201622354U CN201622354U CN2010201093994U CN201020109399U CN201622354U CN 201622354 U CN201622354 U CN 201622354U CN 2010201093994 U CN2010201093994 U CN 2010201093994U CN 201020109399 U CN201020109399 U CN 201020109399U CN 201622354 U CN201622354 U CN 201622354U
- Authority
- CN
- China
- Prior art keywords
- low
- frequency piezoelectric
- frequency
- piezoelectric
- management unit
- 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
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
本实用新型公开了一种三分向低频压电数字地震仪，包括外壳和密封于外壳内的数据采集管理单元、隔离板以及三个相互正交的低频压电加速度计；数据采集管理单元与三个低频压电加速度计之间分别电连接，并通过电缆对外输出采集信号；隔离板位于数据采集管理单元与三个低频压电加速度计之间；其结构缩短了连接环节的电缆长度，降低了信号衰减和干扰。多层组合一体化压电陶瓷晶片的使用，显著提高了加速度计的敏感性和灵敏度。阻抗适配器使地震仪可以记录低频天然地震信号。整个装置体积和重量大大减小，系统噪声低，功能强，可充分适用于对弱小低频信号的有效监测。
The utility model discloses a three-component low-frequency piezoelectric digital seismograph, which comprises a housing, a data acquisition management unit sealed in the housing, an isolation plate and three mutually orthogonal low-frequency piezoelectric accelerometers; the data acquisition management unit and the The three low-frequency piezoelectric accelerometers are electrically connected to each other, and the acquisition signal is output through the cable; the isolation board is located between the data acquisition management unit and the three low-frequency piezoelectric accelerometers; its structure shortens the cable length of the connection link, reduces signal attenuation and interference. The use of the multi-layer combined piezoelectric ceramic chip significantly improves the sensitivity and sensitivity of the accelerometer. Impedance adapters allow seismometers to record low frequency natural seismic signals. The volume and weight of the whole device are greatly reduced, the system noise is low, and the function is strong, which can be fully applied to the effective monitoring of weak low-frequency signals.
Description
Technical field
The utility model relates to fields such as seismic monitoring, seismic prospecting, earthquake engineering, geologic hazard monitoring, Geological Engineering prospecting, relates in particular to a kind of three-component low frequency piezoelectricity digital seismograph of earthquake and artificial earthquake being monitored use.
Background technology
Earthquake is huge to the mankind's influence, and its destructive power and influence power all are unprecedented.Seismic process is shifted to an earlier date and accurately forecasts all is the direction that the seismologist makes great efforts all the time.According to of research and the monitoring of domestic and international research institution to seismic process, can produce very weak microvibration before the earthquake, if can in time monitor, will improve human greatly to the monitoring level of earthquake and the needs used of seismic exploration, earthquake engineering, geologic hazard monitoring contentedly to sort signal.The accelerometer that the various seismic monitorings of using are at present used also is difficult to record to this microvibration, although it can monitor low frequency signal, but sensitivity is lower, is difficult to satisfy the demand of observation weak signal, particularly to the observation of 0.1Hz even lower monitor signal.Piezoelectric ceramic wafer has very high sensitivity, can monitor very weak signal, even can monitor butterfly through the out-of-date signal that flutters, if adopting piezoelectric ceramic wafer to make accelerometer monitors earthquake or artificial earthquake, will overcome the deficiency of present seismograph aspect the monitoring weak signal, in seismic monitoring, earthquake engineering, will play a significant role.This is the starting point of this device development just also.
Summary of the invention
In view of above-mentioned existing situation, the utility model aims to provide a kind of existing high sensitivity, can monitor the three-component low frequency piezoelectricity digital seismograph of low frequency signal again.
The utility model is achieved through the following technical solutions:
Three-component low frequency piezoelectricity digital seismograph, comprise shell and be sealed in shell interior data capture management unit, division board and three mutually orthogonal low frequency piezoelectric accelerometers, data capture management unit, division board and three low frequency piezoelectric accelerometers are separately fixed in the shell; Be electrically connected respectively between data capture management unit and three the low frequency piezoelectric accelerometers, and externally export acquired signal by cable; Division board is between data capture management unit and three low frequency piezoelectric accelerometers.
Be provided with frame in the described shell, frame is provided with the cavity of three relatively independent and quadratures, and three low frequency piezoelectric accelerometers are embedded in respectively in three cavitys.
Three cavitys on the described frame are three through holes, and the profile of three low frequency piezoelectric accelerometers is cylindrical, and cylindrical low frequency piezoelectric accelerometer is embedded in the through hole.
Described low frequency piezoelectric accelerometer comprises housing and the pedestal, piezoelectric ceramic wafer, current-carrying plate, mass and the impedance adapter that are positioned at housing, and pedestal is fixed on the bottom of housing inner chamber, and piezoelectric ceramic wafer is fixed on the pedestal top; Mass is connected on the piezoelectric ceramic wafer by current-carrying plate; Impedance adapter is embedded in the mass top, and impedance adapter is electrically connected with current-carrying plate, and impedance adapter is connected with the data capture management unit by external cable.
Described piezoelectric ceramic wafer is the integrated piezoelectric ceramic wafer of multiple layer combination.
Described piezoelectric ceramic wafer and pedestal are structure as a whole.
Described pedestal is embedded in the bottom of housing inner chamber.
Described data capture management unit comprises the collection plate and the motherboard of mutual electrical connection, collection plate is connected with three mutually orthogonal low frequency piezoelectric accelerometers respectively by external cable, and collection plate is sent on the motherboard after the analog signal conversion that collects is become digital signal; Motherboard is accepted the work of instruction control collection plate and digital signal is transmitted to the external world in this locality storage or by cable.
Described collection plate and motherboard are structure as a whole.
Three-component low frequency piezoelectricity digital seismograph described in the utility model adopts the integrated piezoelectric ceramic wafer of multiple layer combination that seismic monitoring, earthquake engineering are surveyed, and has significantly improved the susceptibility and the sensitivity of accelerometer; The impedance adapter that is embedded in the mass top makes accelerometer can write down the natural or artificial earthquake signal of low frequency, and its low-frequency range expands to below 0.1 hertz; Division board between data capture management unit and three mutually orthogonal low frequency piezoelectric accelerometers, three-component low frequency piezoelectric accelerometer and data capture management unit are integrated, reduced the cable length of connecting link, reduced system noise, reduced the decay of signal, help digitizer and detect weak earthquake information, improved the dynamic range and the anti-jamming capacity of seismometer.Three-component low frequency piezoelectricity digital seismograph volume and weight after the improvement reduces greatly, and system noise is low, and function is strong, can fully satisfy the effective monitoring requirement for small and weak low frequency signal.
Description of drawings
Fig. 1 is a structural representation cut-open view of the present utility model;
Fig. 2 is the structural representation cut-open view of low frequency piezoelectric accelerometer.
Embodiment
Below in conjunction with accompanying drawing 1, Fig. 2 the utility model is further described:
Three-component low frequency piezoelectricity digital seismograph described in the utility model comprises shell 7 and data capture management unit 2, division board 3 and three mutually orthogonal cylindrical low frequency piezoelectric accelerometers 1 of being sealed in the shell 7.Data capture management unit 2, division board 3 and three low frequency piezoelectric accelerometers 1 are separately fixed in the shell 7, and shell 7 tops are provided with capping 4, and capping 4 is sealed in data capture management unit 2, division board 3 and three low frequency piezoelectric accelerometers 1 in the shell 7.Division board 3 is between data capture management unit 2 and three low frequency piezoelectric accelerometers 1, division board 3 can effectively reduce the mutual interference mutually between data capture management unit 2 and the low frequency piezoelectric accelerometer 1, shorten simultaneously the transmission range between the two to greatest extent, guarantee the transmission quality of Information Monitoring, avoid signal attenuation that sensitive monitoring and accuracy are brought influence.
Wherein, low frequency piezoelectric accelerometer 1 comprises a cylindrical housings 11 and the pedestal 15, piezoelectric ceramic wafer 14, current-carrying plate 13, mass 12 and the impedance adapter 10 that are positioned at housing 11.Pedestal 15 is embedded in the bottom of housing 11 inner chambers, piezoelectric ceramic wafer 14 is the integrated piezoelectric ceramic wafer of multiple layer combination, incorporate piezoelectric ceramic wafer 14 is into a single integrated structure with pedestal 15 top design, can significantly improve the structural stability of 14 of pedestal 15 and piezoelectric ceramic wafers like this, guarantee the sensitivity and the reliability of piezoelectric ceramic wafer 14 detection process.Current-carrying plate 13 is connected piezoelectric ceramic wafer 14 tops, mass 12 is connected current-carrying plate 13 tops, impedance adapter 10 is embedded in mass 12 tops, impedance adapter 10 is electrically connected with current-carrying plate 13 by lead 16, impedance adapter 10 receives from the charge variation situation that produces on the piezoelectric ceramic wafer 14 and converts corresponding electric signal to, at last, impedance adapter 10 is sent to this information in the housing 11 data capture management unit 2 outward by external cable 9, finishes the processing again of Information Monitoring in data capture management unit 2.
Data capture management unit 2 comprises the collection plate and the motherboard of mutual electrical connection, collection plate and motherboard are made into integrative-structure, collection plate is connected with impedance adapter 10 on three mutually orthogonal low frequency piezoelectric accelerometers 1 respectively by external cable 9, and reception is from the information on the impedance adapter 10.Motherboard is by accepting the work of external command control collection plate, and the signal after the analog to digital conversion that collection plate is collected by cable 5 to external world's transmission, realize externally that finally digital signal observes, realize digital monitoring, the analysis of microvibration before the earthquake.
For ease of stable, firm three low frequency piezoelectric accelerometers 1 are fixed in the shell 7, in shell 7 with respect to also being provided with frame 6 on the position of three low frequency piezoelectric accelerometers 1, frame 6 is fixed in the shell 7, frame 6 is provided with three mutually orthogonal through holes, three low frequency piezoelectric accelerometers 1 are embedded in respectively in three through holes, through hole fixedly secures low frequency piezoelectric accelerometer 1 and fully contacts with low frequency piezoelectric accelerometer 1, guarantee the structural stability of low frequency piezoelectric accelerometer 1 in shell 7, guaranteed the reliability that its observation process uses.
Certainly, in the said structure, pedestal 15 also can adopt alternate manner to be fixed on the bottom of housing 11 inner chambers, and piezoelectric ceramic wafer 14 can not be structure as a whole with pedestal 15 yet, is connected pedestal 15 tops firmly, fully as long as can guarantee piezoelectric ceramic wafer 14.And be arranged at the through hole of the relatively independent and quadrature of in the frame 6 three, equally also can be mutually orthogonal and the cavity of three other shapes independently, as long as the shape of these three cavitys is complementary with the profile of three low frequency piezoelectric accelerometers 1 respectively, so just three low frequency piezoelectric accelerometers 1 fully can be fixed in three cavitys, guarantee the steadiness and the reliability of its structure.
In the actual monitoring process, three-component low frequency piezoelectricity digital seismograph is placed on with needing monitoring, when seismic signal produces, the piezoelectric ceramic wafer 14 of the integral structure of multiple layer combination pushes, is out of shape under the effect of mass 12, simultaneously, piezoelectric ceramic wafer 14 intramolecules that are subjected to the external force effect produce polarization phenomena, and two surperficial upward generation quantity equates, the electric charge of opposite in sign, has promptly produced electromotive force.Electromotive force is communicated with impedance adapter 10 by current-carrying plate 13 and lead 16, impedance adapter 10 is the high impedance output transform of piezoelectric ceramic wafer 14 Low ESR output, simultaneously, collection plate is gathered from the information in the impedance adapter 10 on three directions, after analog to digital conversion, read through motherboard respectively, storage, and send to the external world by cable 5, finally obtain monitoring digital signal monitoring and observation on three directions in ground in the external world, realized situation awareness and the grasp of people, thereby provide strong data guarantee for the huge injury of effectively avoiding earthquake that the mankind are caused the earthquake feeble signal.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201093994U CN201622354U (en) | 2010-02-08 | 2010-02-08 | Three-way low-frequency piezoelectric digital seismograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201093994U CN201622354U (en) | 2010-02-08 | 2010-02-08 | Three-way low-frequency piezoelectric digital seismograph |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622354U true CN201622354U (en) | 2010-11-03 |
Family
ID=43025813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201093994U Expired - Fee Related CN201622354U (en) | 2010-02-08 | 2010-02-08 | Three-way low-frequency piezoelectric digital seismograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622354U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181582A (en) * | 2013-05-24 | 2014-12-03 | 北京嘉岳同乐极电子有限公司 | Vibration monitor and earthquake vibration monitoring apparatus |
| CN106291667A (en) * | 2016-07-25 | 2017-01-04 | 西安石油大学 | Lamination nanometer piezoelectric acceleration digital geophone |
| CN112197855A (en) * | 2020-10-09 | 2021-01-08 | 尹涛 | Integrated triaxial acquisition and storage device for low-frequency environment vibration signals |
-
2010
- 2010-02-08 CN CN2010201093994U patent/CN201622354U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181582A (en) * | 2013-05-24 | 2014-12-03 | 北京嘉岳同乐极电子有限公司 | Vibration monitor and earthquake vibration monitoring apparatus |
| CN106291667A (en) * | 2016-07-25 | 2017-01-04 | 西安石油大学 | Lamination nanometer piezoelectric acceleration digital geophone |
| CN112197855A (en) * | 2020-10-09 | 2021-01-08 | 尹涛 | Integrated triaxial acquisition and storage device for low-frequency environment vibration signals |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104181579B (en) | Full-digital three-component VSP (vertical seismic profile) system and measuring method thereof | |
| CN201247061Y (en) | Multichannel synchronized signal collection device | |
| CN102628960B (en) | Velocity and acceleration two-parameter digital geophone | |
| CN103278846A (en) | Microseismograph, microseism signal acquiring and de-noising method, and microseism signal acquiring method | |
| CN103513273A (en) | Land-use four-component digital geophone | |
| CN105403912A (en) | Device and system for collecting seismic data | |
| CN201340457Y (en) | General-purpose seismic data collecting and recording device | |
| CN201622354U (en) | Three-way low-frequency piezoelectric digital seismograph | |
| CN106199687A (en) | Simple component geophone | |
| CN112197855A (en) | Integrated triaxial acquisition and storage device for low-frequency environment vibration signals | |
| CN201804122U (en) | Integrated multi-channel digital seismic detector | |
| CN215369816U (en) | Vertical shaft microseismic measuring device | |
| CN102680155A (en) | Stress and vibration measurement device for rotary machine | |
| CN206161147U (en) | Bridge vibration monitoring devices | |
| CN1176387C (en) | Intelligent 3-component earthquake detector | |
| CN205228750U (en) | Wall body antidetonation rank detects machine | |
| CN212843958U (en) | Wireless intelligent vibration sensor adopting LoRa communication technology | |
| CN206347993U (en) | A kind of inclination measurement device | |
| CN201368921Y (en) | Vibration signal receiving device | |
| CN206594317U (en) | Hydrophone sensitivity detector and its sound pressure signal collecting mechanism | |
| CN115453653A (en) | Very low frequency underwater sound and ground wave combined measurement system | |
| CN102831665A (en) | Power transmission tower intensity and vibration off-line intelligent routing inspection system and early warning method thereof | |
| CN203745427U (en) | Acquiring device for vibration reflected signal | |
| CN109471160B (en) | Moving coil detector for simultaneously detecting speed and acceleration | |
| CN209357210U (en) | A kind of Geological Hazards Monitoring device based on 51 single-chip microcontrollers and Hall effect |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20140208 |