CN203673078U - Earthquake signal acquisition device with parallel acquisition channels - Google Patents
Earthquake signal acquisition device with parallel acquisition channels Download PDFInfo
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- CN203673078U CN203673078U CN201320768919.6U CN201320768919U CN203673078U CN 203673078 U CN203673078 U CN 203673078U CN 201320768919 U CN201320768919 U CN 201320768919U CN 203673078 U CN203673078 U CN 203673078U
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Abstract
The utility model discloses an earthquake signal acquisition device with parallel acquisition channels, comprising a signal conditioning circuit, an A/D converter and a microcontrolle connected in order with a detector. The signal conditioning circuit is a signal acquisition module provided with parallel data input channels. A single-ended-to-differential circuit connected with the A/D converter is arranged on the signal conditioning circuit. The device of the utility model employs high integrated hardware structure, realizes parallel input and processing of multichannel earthquake signals, satisfies requirements for high integration and low power consumption, and increases portability of the device. Thus, the device is suitable for applying to seismic detection such as field construction , poor geological conditions and the like with excellent practicality.
Description
Technical field
The utility model relates to signals collecting field, specifically, is the seismic signal acquisition device with parallel acquisition passage.
Background technology
Along with developing rapidly of national economy, the speed of urban construction is also more and more faster, meanwhile, anti-seismic problem based on urban architecture is also increasingly important, in the prior art, shallow earthquake (being engineering seismology) exploration is reconnoitred as Search For Hidden tomography, tectonic structure and the technical way of Tunnel prediction, has brought into play very important effect in engineering geological survey and evaluation field.At present, the shallow seismic exploration of main flow adopts multiple tracks to cover the acquisition method of stack conventionally, it is the parallel acquisition of multiple tracks seismic signal, its principle is as follows: adopt FPGA(field programmable gate array) or the multiple tracks signal acquisition method of industrial computer be applied in centralized seismograph (as: DZQ48), in the time that reality is used, conventionally take the integrated 12 road A/D(analog to digital converters of veneer), controlled by 4 FPGA, although this mode has stronger parallel acquisition ability, but greatly increase the volume and weight of instrument self, especially centralized project organization has more limited the construction ability of equipment under complex environment.Therefore, for the problems referred to above, the utility model proposes a kind of seismic signal acquisition device of pocket, can not only realize collection and the storage of geological data, can also increase integrated degree and the portability of acquisition station, there is fabulous promotional value.
Utility model content
The purpose of this utility model is to provide the seismic signal acquisition device with parallel acquisition passage, the feeble signal that adopts signal conditioning circuit can effectively pick up wave detector, and be sent to microcontroller by parallel data input channel and process, can realize the multi pass acquisition of seismic signal, and improve the degree of accuracy of earthquake information, be particularly useful in the severe seismic survey of field construction and geologic condition, practical.
The utility model is achieved through the following technical solutions: the seismic signal acquisition device with parallel acquisition passage, comprise the signal conditioning circuit being connected with wave detector successively, A/D converter and microcontroller, signal conditioning circuit is the signal acquisition module that is provided with parallel data input channel, on signal conditioning circuit, be provided with the single-ended transfer difference circuit connecting for A/D converter, the utility model adopts the design of parallel data input channel can realize the multi pass acquisition of seismic signal, simultaneously, adopt single-ended transfer difference circuit, the design of the modules such as A/D converter, the requirement of also integrated this device Highgrade integration and low-power consumption, thereby realize the object of simplifying this device hardware configuration, and there is good portability.
For the feeble signal better wave detector being discharged gathers, the utility model adopts signal conditioning circuit to gather it, in the time that reality is used, the seismic signal that wave detector discharges is by parallel data input channel, its structure is as follows: the quantity Wei Si road of described parallel data input channel, all parallel join is between wave detector and single-ended transfer difference circuit, every channel parallel data input channel is mainly by the prime amplifier being connected successively, program-controlled amplifier and frequency overlapped-resistable filter composition, prime amplifier acts on wave detector, frequency overlapped-resistable filter is connected on single-ended transfer difference circuit.
For better realizing said structure, prime amplifier described in the utility model is OPA2188; Described program-controlled amplifier is PGA205; Described frequency overlapped-resistable filter is MAX263.
In the utility model, described microcontroller is the control module being connected with computing machine, on microcontroller, be provided with the wireless communication interface connecting for computer radio, in the time that reality is used, the a large amount of geological datas that gather gained can be stored in storage space therein by microcontroller, meanwhile, also data can be sent to computing machine (being Master Control Center) by wireless communication interface and control, improve the pocket of device.
The utility model is simple in structure, and described wireless communication interface is the wireless transceiver being connected with microcontroller.
For better realizing the utility model, described microcontroller is MSP430F149; Described wireless transceiver is nRF24L01.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is reasonable in design, adopt the design of parallel data input channel can realize multi pass acquisition and the processing of seismic signal, the feeble signal that can not only farthest discharge wave detector is picked up, improve the degree of accuracy of earthquake information,, can also be sent on computing machine by wireless communication interface meanwhile, thereby further improve the pocket of this device, be particularly useful in the severe seismic survey of field construction and geologic condition, practicality is extremely strong.
(2) the utility model can be realized the parallel input of four road collection signals, and after amplification, low-pass filtering, send into the A/D converter of single-ended transfer difference circuit with coupling rear end simultaneously, this structure has not only met the demand of the highly integrated and low-power consumption of system, simultaneously, also realized and simplified the object of hardware configuration, and there is good portability.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment:
Take You 12 road A/D(analog to digital converters based on existing seismograph) and 4 FPGA realize parallel acquisition and process existing defect, the utility model proposes the seismic signal acquisition device with parallel acquisition passage, this device can pass through highly integrated hardware configuration, realize parallel input and the processing of multi pass acquisition signal, in meeting the highly integrated and low-power consumption demand of system, also improved the portability of device, make it more be conducive to the application in seismic survey environment such as badly of field construction and geologic condition, practicality is extremely strong.Its structure as shown in Figure 1, main by the signal conditioning circuit being connected successively, single-ended transfer difference circuit, A/D converter and microcontroller composition, wherein, signal conditioning circuit is the signal acquisition module that is provided with parallel data input channel, in the time that reality is used, signal conditioning circuit acts on wave detector, the multi pass acquisition signal that the design of above-mentioned parallel data input channel can effectively discharge wave detector is realized parallel input and is processed, and then send into single-ended transfer difference circuit to mate the A/D converter of rear end, more existing seismograph adopts 12 road A/D(analog to digital converters) and 4 circuit structures that FPGA gather and process, there is higher integrated level, thereby also there is higher portability in guaranteeing its performance, be particularly useful in the severe seismic survey of field construction and geologic condition, practicality is extremely strong.
In seismic survey process, according to the difference of the condition of field construction and geologic media, method of exploration, all require seismographic acquisition system parameter to adjust according to actual conditions, can farthest pick up with assurance system the slight earthquake signal that man-made explosion excites.And in the utility model, because the wave detector of system front end is moving-coil geophone, this equipment is mainly to pick up artificial earthquake signal by inductively lower vibrations in high sensitivity, this feeble signal is the one momentary signal faster of decaying, and under different execution conditions, its signal amplitude and variation range are also different, therefore, the utility model proposes the setting of signal conditioning circuit, the parallel data input channel composition that this circuit You Si road is parallel, its front end is connected on wave detector, can input the seismic signal that No. four wave detectors discharge, its rear end is connected on single-ended transfer difference circuit, and its structure mainly as shown in Figure 1, every channel parallel data input channel is mainly by the prime amplifier being connected successively, program-controlled amplifier and frequency overlapped-resistable filter composition, wherein, prime amplifier acts on wave detector, frequency overlapped-resistable filter is connected on single-ended transfer difference circuit, in the time that reality is used, the adjustable parameter of this circuit structure comprises gain amplifier, filter cutoff frequency, sampling rate, sampling length etc., be mainly used in amplifying the feeble signal of front end wave detector, the input of employing multichannel, can also effectively improve the degree of accuracy of sampled data, certainly, in actual fabrication process, this design can also improve integrated degree and the portability of harvester, and for better realizing said structure, prime amplifier adopts OPA2188, with 5 times of fixed gains, the signal of wave detector is amplified, and then coordinate program-controlled amplifier to realize adjustable gain enlarging function, can adopt PGA205, its input offset voltage is 50 μ V minimum in prime amplifier, and the input offset voltage of OPA2188 is 10 μ V, frequency overlapped-resistable filter can be used for eliminating the frequency alias phenomenon causing because of the various noises of field condition, conventionally adopts MAX263.
Can send into the A/D converter of single-ended transfer difference circuit with coupling rear end through signal conditioning circuit signal after treatment, in order to meet integrated and low-power consumption demand, the utility model adopts the A/D converter (as: ADS1256) of the integrated 4 tunnel difference inputs of monolithic to complete analog-digital conversion function, and control each Elementary Function by microcontroller, in the time that reality is used, microcontroller can adopt the low power processor MSP430F149 of 16, in its course of work, a large amount of geological datas is temporary in the internal storage space of MSP430F149, simultaneously, send data to Master Control Center (that is: computing machine) by wireless communication interface again, therefore, the utility model is also provided with the wireless communication interface connecting for computer radio on microcontroller, as shown in Figure 1, this wireless communication interface is the wireless transceiver being connected with microcontroller, can adopt nRF24L01.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection domain of the present utility model.
Claims (8)
1. there is the seismic signal acquisition device of parallel acquisition passage, it is characterized in that: comprise the signal conditioning circuit, A/D converter and the microcontroller that are connected with wave detector successively, signal conditioning circuit is the signal acquisition module that is provided with parallel data input channel, is provided with the single-ended transfer difference circuit connecting for A/D converter on signal conditioning circuit.
2. the seismic signal acquisition device with parallel acquisition passage according to claim 1, it is characterized in that: the quantity Wei Si road of described parallel data input channel, all parallel join is between wave detector and single-ended transfer difference circuit, every channel parallel data input channel is mainly made up of the prime amplifier being connected successively, program-controlled amplifier and frequency overlapped-resistable filter, prime amplifier acts on wave detector, and frequency overlapped-resistable filter is connected on single-ended transfer difference circuit.
3. the seismic signal acquisition device with parallel acquisition passage according to claim 2, is characterized in that: described prime amplifier is OPA2188; Described program-controlled amplifier is PGA205.
4. the seismic signal acquisition device with parallel acquisition passage according to claim 3, is characterized in that: described frequency overlapped-resistable filter is MAX263.
5. according to the seismic signal acquisition device with parallel acquisition passage described in claim 1～4 any one, it is characterized in that: described microcontroller is the control module being connected with computing machine, on microcontroller, be provided with the wireless communication interface connecting for computer radio.
6. the seismic signal acquisition device with parallel acquisition passage according to claim 5, is characterized in that: described wireless communication interface is the wireless transceiver being connected with microcontroller.
7. the seismic signal acquisition device with parallel acquisition passage according to claim 6, is characterized in that: described microcontroller is MSP430F149.
8. the seismic signal acquisition device with parallel acquisition passage according to claim 7, is characterized in that: described wireless transceiver is nRF24L01.
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| CN201320768919.6U CN203673078U (en) | 2013-11-29 | 2013-11-29 | Earthquake signal acquisition device with parallel acquisition channels |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133411A (en) * | 2014-08-12 | 2014-11-05 | 江苏艾倍科科技有限公司 | Portable data acquisition instrument |
| CN104833297A (en) * | 2015-05-26 | 2015-08-12 | 上海工程技术大学 | Signal processing unit for multichannel micro-strain data acquisition system |
| CN105652756A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Safe multichannel data collection system |
| CN105652755A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Safe and improved multichannel data collection system |
| CN105651342A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Multichannel data collection system |
| CN105761472A (en) * | 2016-03-21 | 2016-07-13 | 成都爆米花信息技术有限公司 | Novel multi-channel data acquisition system with function of noise reduction |
| CN105761473A (en) * | 2016-03-21 | 2016-07-13 | 成都爆米花信息技术有限公司 | Multi-channel data acquisition system capable of reducing noise |
| CN105807659A (en) * | 2016-03-21 | 2016-07-27 | 成都爆米花信息技术有限公司 | Improved multi-way data collecting system |
| CN105843113A (en) * | 2016-03-21 | 2016-08-10 | 成都爆米花信息技术有限公司 | Multipath data acquisition system |
| CN106154310A (en) * | 2016-08-18 | 2016-11-23 | 安徽惠洲地质安全研究院股份有限公司 | A kind of Portable city geologic anomaly seismic acquisition system and method |
| CN106707895A (en) * | 2017-02-24 | 2017-05-24 | 中国石油大学(北京) | High-precision synchronous vibration data collection card for various types of detection signals |
| CN112098709A (en) * | 2020-08-14 | 2020-12-18 | 陕西千山航空电子有限责任公司 | Acquisition circuit of self-adaptive microvolt analog voltage signal |
| CN113625338A (en) * | 2021-08-11 | 2021-11-09 | 成都理工大学 | Seismic weak signal extraction method based on difference |
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- 2013-11-29 CN CN201320768919.6U patent/CN203673078U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104133411A (en) * | 2014-08-12 | 2014-11-05 | 江苏艾倍科科技有限公司 | Portable data acquisition instrument |
| CN104833297A (en) * | 2015-05-26 | 2015-08-12 | 上海工程技术大学 | Signal processing unit for multichannel micro-strain data acquisition system |
| CN105652756A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Safe multichannel data collection system |
| CN105652755A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Safe and improved multichannel data collection system |
| CN105651342A (en) * | 2016-03-21 | 2016-06-08 | 成都爆米花信息技术有限公司 | Multichannel data collection system |
| CN105761472A (en) * | 2016-03-21 | 2016-07-13 | 成都爆米花信息技术有限公司 | Novel multi-channel data acquisition system with function of noise reduction |
| CN105761473A (en) * | 2016-03-21 | 2016-07-13 | 成都爆米花信息技术有限公司 | Multi-channel data acquisition system capable of reducing noise |
| CN105807659A (en) * | 2016-03-21 | 2016-07-27 | 成都爆米花信息技术有限公司 | Improved multi-way data collecting system |
| CN105843113A (en) * | 2016-03-21 | 2016-08-10 | 成都爆米花信息技术有限公司 | Multipath data acquisition system |
| CN106154310A (en) * | 2016-08-18 | 2016-11-23 | 安徽惠洲地质安全研究院股份有限公司 | A kind of Portable city geologic anomaly seismic acquisition system and method |
| CN106707895A (en) * | 2017-02-24 | 2017-05-24 | 中国石油大学(北京) | High-precision synchronous vibration data collection card for various types of detection signals |
| CN106707895B (en) * | 2017-02-24 | 2019-02-12 | 中国石油大学(北京) | A kind of high-precise synchronization vibrating data collection card of collection polymorphic type detection signal |
| CN112098709A (en) * | 2020-08-14 | 2020-12-18 | 陕西千山航空电子有限责任公司 | Acquisition circuit of self-adaptive microvolt analog voltage signal |
| CN113625338A (en) * | 2021-08-11 | 2021-11-09 | 成都理工大学 | Seismic weak signal extraction method based on difference |
| CN113625338B (en) * | 2021-08-11 | 2023-07-11 | 成都理工大学 | Differential-based seismic weak signal extraction method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20141129 |
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| EXPY | Termination of patent right or utility model |