CN102012518B - Intrinsically-safe 24-bit seismic data acquisition circuit board - Google Patents
Intrinsically-safe 24-bit seismic data acquisition circuit board Download PDFInfo
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Abstract
The invention relates to an intrinsically-safe 24-bit seismic data acquisition circuit board, which consists of hardware and software, wherein the hardware comprises a power conversion circuit, an acquisition control circuit, a signal conditioning circuit, an analog/digital conversion circuit and an auxiliary circuit; and the software comprises a communication module, an acquisition control module, a low-power consumption management module and a drifting calibration module. By the acquisition circuit board, the acquisition and storage of adjustable seismic signals and the transmission of digital signals in channels from 1 to 3 can be realized; the intrinsically-safe explosion prevention of a circuit is realized by selecting high-performance and low low-power consumption devices and the optimization design and low-power consumption management of the circuit; the acquisition circuit board has the characteristics of small volume, low power consumption, high accuracy, dust prevention, water prevention and explosion prevention; the acquisition circuit board can be encapsulated in the same shell with a seismic signal transducer to form a 24-bit digital three-component detector, and can be encapsulated singly to form a 24-bit three-channel seismic data acquisition station; and the intrinsically-safe 24-bit seismic data acquisition circuit board is suitable for seismic data acquisition of engineering sites and underground coal mine.
Description
Technical field
The invention belongs to the geophysical exploration technology field, is a kind of earthquake data acquisition equipment for high-resolution seismic survey, is applicable to the distributed earthquake data acquisition system (DAS) under engineering site and the coal mine.
Technical background
Geophysical probing technique because of its have harmless, easy, in advance, rapidly and efficiently, outstanding technical advantage such as low cost, solve the necessary new technical means of many mines (engineering) geological problem and become gradually.Existing mine geophysical exploration technology mainly comprises method of exploration such as seismic wave method, DC electrical method, electromagnetic wave and slot wave, these methods have all obtained certain achievement in application in practice, but existing mine geophysical exploration instrument ubiquity precision is low, poor stability, function singleness or problem such as portable not enough, do not catch up with the develop rapidly of current geophysical exploration technology and instrument and equipment, therefore restricting their application under mine.
Seismic prospecting has the seismic wave propagation distance, the wave field abundant information can be carried out characteristics such as multiattribute parametric inversion, the multiwave multicomponent earthquake exploration that its newly-developed gets up is used for solving a kind of seismic prospecting new technology of complex area detected with high accuracy and engineering geological problems especially, use the seismic wave information of enriching of three-component acquisition seismic wave field, accurately provide precondition in the road of exploration to the seismic prospecting trend, the equipment that the three-dimensional 3-component earthquake exploration in ground is at present used is all the large-scale telemetry system of external import, 3-component earthquake exploration is still seldom used in the engineering field, and particularly colliery engineering does not more have the geophysical equipment that this technology is carried out in suitable down-hole because of its environmental baseline and specific (special) requirements (explosion-proof).
At present, the seismograph that use in the engineering field mostly is centralized simple component collection, the AD conversion accuracy is generally less than 24, based on 12 and 16, because the big line heaviness of Centralized Control System, can not split, therefore its reception channel number is generally few, mostly be 12,24 roads, and engineering seismology exploration geology job change is various, the scale exploration of certain area is arranged, also there is local zonule to survey, so centralized seismograph often is difficult to satisfy the engineering exploration requirement, simultaneously, because centralized control, analog signal transmission, easily produce channels crosstalk, extraneous telecommunication interference etc., the difference of each channel analog signal transmission range also can cause the signal attenuation difference, makes to utilize geological data to carry out attributive analysis formation systematic errors such as AVO; Because need equip light and flexible during the mine seismic survey work, the equipment that uses under the coal mine must have explosion-proof performance, so should being designed to the essential safe type portable instrument, the mine earthquake data acquisition just has applicability, the present invention is directed to mine earthquake data acquisition precision prescribed height, weak signal is picked up and strong anti-interference performance, the flexible portable requirement that waits, design a kind of high-performance earthquake data acquisition circuit, by selecting novel programmable instrumentation amplifier and 24 for use, the multi-channel synchronous A/D converter, constitute high-performance earthquake data acquisition circuit, this collecting circuit board both can be packaged in seismic signal sensor (detector core body) and constitute high-performance 24 bit digital three-component seismometers in the same housing, can encapsulate separately again simultaneously and constitute high-performance triple channel earthquake data acquisition station, utilize portable mine intrinsic safety seismograph (to obtain patent, patent No. ZL200610165382.9) controls, form distributed earthquake data acquisition system (DAS), to improve the overall performance of acquisition system.
Principle of work of the present invention is: by the seismic event of epicenter excitation generation, after underground medium is propagated, carry the structural information of medium inside and returning ground, being detected the device core body at each measuring point place receives, detector core body is converted to electric signal with tested vibration signal, send into the input end of anti-confusion filtering circuit by signal input interface, send into the input end of variable gain operational amplifier again through filtered signal, send into 24 high-performance A/D converters through amplified analog signal and carry out data-switching, digital signal after the conversion at first deposits in the data-carrier store, be sent to external host by serial line interface then, main frame shows and the record acquisition data that recorded treated parsing can obtain relevant geology achievement.
Summary of the invention
For satisfying the application needs of high precision seismic data acquisition, a kind of 24 earthquake data acquisition circuit boards have been designed and developed, it mainly is made of hardware and software two parts, hardware mainly is made of power converting circuit, acquisition control circuit, signal conditioning circuit, mould/number conversion circuit and auxiliary circuit, and software mainly is made of communication module, acquisition control module, low-power consumption administration module and drift calibration module.Wherein power converting circuit adopts the separately mode of power supply of digital power and analog power, is made of corresponding digital power translation circuit and analog power translation circuit respectively; The acquisition control circuit part mainly is made up of the trigger circuit that microcontroller, startup are gathered; Signal conditioning circuit mainly is made up of anti-confusion filtering circuit and variable gain operational amplifier; Mould/number conversion circuit mainly is made of reference source circuit, A/D converter and data-carrier store; Auxiliary circuit mainly is made up of reset circuit, condition indication circuit, signal input interface and serial communication interface.In the design for reaching low-power consumption, small size, high precision, high-resolution purpose of design, signal amplifier is selected novel, low-noise programmable instrument amplifier AD8253, analog to digital converter is selected 24 of high-performance for use, 4 passages are gathered A/D converter ADS1274 synchronously, microcontroller (Micro-Controller Unit is called for short MCU) is selected high-performance for use, little power consumption, 16 digit RISC micro controller MSP430F2232, extend out the low power consumption data storer FM26L256 of 2 32Kb * 8 in addition for the application needs that satisfy the big data quantity collection, the selected device of Acquisition Circuit and wire laying mode all satisfy the design of essence safety requirement, circuit board evenly sprays three times three anti-lacquers after debugging is finished, this collecting circuit board can be realized the adjustable seismic signal collection of 1～3 passage, storage and digital data transmission function, by selecting high-performance for use, low energy-consumption electronic device and circuit optimization design, the low-power consumption management, realized the circuit inbeing safe explosion prevention, it is little to have volume, low in energy consumption, the precision height, dustproof, waterproof, explosion-proof characteristics, this collecting circuit board both can be packaged in seismic signal sensor (detector core body) and constitute high-performance 24 bit digital wave detectors in the same housing, can encapsulate simultaneously formation high-performance triple channel acquisition station again separately, be applicable to the earthquake data acquisition under engineering site and the coal mine.The key technical indexes of earthquake data acquisition circuit board is as follows:
Port number: 3
Sampling interval: 100us～2ms increases progressively optional
Sampling number: 512,1024,2048 is optional
Allow dynamic range:＞110dB
Common-mode rejection ratio:＞100dB (G=10)
Before put noise:＜1.0uV
Operating voltage: ± 12V
Non-linear:＜0.05%
Physical dimension: π * 50
2Mm
2
Description of drawings
The hardware composition frame chart of Fig. 1 earthquake data acquisition circuit board
Fig. 2 signal Conditioning Circuit Design
The interface of Fig. 3 MCU and ADS1274
The interface of Fig. 4 MCU and FM25L256
The design cycle of Fig. 5 acquisition control module
The design cycle of Fig. 6 communication module
The design cycle of Fig. 7 low-power consumption administration module
Embodiment
1 hardware design
Fig. 1 is the hardware composition frame chart of earthquake data acquisition circuit board, in the design mimic channel and digital circuit are separately powered, analog power is only given signal conditioning circuit, A/D converter and reference source circuit power supply, and digital power partly powers for digital circuits such as MCU, storer, communication interface.The seismic signal signal of sensor is at first sent into collecting circuit board by signal input interface, send into A/D converter through filtering with after amplifying, data after mould/number conversion at first deposit among the FRAM, deliver to main frame by the RS-485 serial communication interface then, trigger circuit be gather when realizing distributed earthquake data acquisition start constantly with outside focus synchronously.
(1) signal conditioning circuit design
The function of signal conditioning circuit is that the simulating signal amount that sensor picks up is carried out suitable adjustment and processing, in order to provide corresponding measurement to physical characteristics, the structure of modulate circuit and performance depend on electrical characteristics and the output of sensor.Based on simplified structure and prevent signal distortion two aspect factors, in Acquisition System Design, removed the simulation low-cut filter, only add one-level anti-confusion filtering device at data input pin, its filtering circuit is as shown in Figure 2.Among the figure+IN ,-IN represents the differential input signal from the simulated earthquake sensor respectively, by R, C
DAnd C
CSend into the input end of instrument amplifier after the low-pass filter filtering that constitutes, capacitor C
DWith C
CParallel connection can reduce effectively because two input end C
CThe AC CMR error that does not match and cause is worked as C
DCompare C
CBig 10 times, then can be with owing to C
CThe CMR error that causes that do not match reduces by 20 times.
The analog to digital converter of selecting for use among the design is high speed, 24 delta sigma pattern number converters, its principal feature is to have good AC and DC characteristic, sampling rate reaches as high as 128KSPS, and signal to noise ratio (snr) can reach 111dB when working in high precision mode, and offset drift is 0.8 μ V/ ℃.Consider that the performance of each device of composition system all can influence the overall performance of acquisition system, add input signal again and be an amount that changes with service condition, so the amplification driving circuit in the design system selects is the programmable instrumentation amplifier of high performance index for use.
In system for acquiring seismic data, preceding discharge road has the greatest impact to total system, and its performance is directly connected to system to the antijamming capability of input signal and the output sensitivity of wave detector (being output efficiency).Because differential amplifier is made input circuit, have characteristics such as input impedance height, anti-common mode interference ability be strong, and can not cause the phase distortion of composite signal, therefore selected for use single chip integrated three transporting discharging type instrument amplifier AD8253 as prime amplifier in the design, it has characteristics such as volume is little, noise is low, Time Created is short, thereby is very suitable for the design needs of broadband, high-resolution signal collection.Because the amplitude from three-channel seismic signal has certain difference, therefore used three prime amplifiers respectively three road input signals to be nursed one's health so that each road amplitude balanced in the design.Fig. 2 has provided the application circuit of AD8253, in the design for ADS1274 coupling, adopt differential mode output, simultaneously with the current potential translation 2.5V to satisfy the level requirement of ADS1274.
(2) design of data acquisition circuit
In the design of data acquisition circuit, the performance of A/D converter (being called for short ADC) is directly connected to the quality of signals collecting, the main performance index of weighing ADC has sampling rate and sampling precision, wherein sampling rate has determined to allow the effective frequency range of input signal, be the bandwidth of input signal, sampling precision has determined the dynamic range of input signal.
In the design of this Acquisition Circuit, select for use ADC mainly to consider from following factor: the one, gathered the frequency band of signal: being mainly used in gathering, shallow earthquake wave reflection signal here, the useful signal frequency range is many at tens Hz～hundreds of Hz, reaches as high as more than the 1000Hz when being used for the ground surface works exploration; The 2nd, the precision of sampling: the seismic signal of conventional epicenter excitation can be from the uV level to hundreds of mV, in order to record seismic signal from different depth (signal intensity increase with the degree of depth and weak gradually), requires the dynamic range of ADC should be greater than 110dB; The 3rd, the power consumption of acquisition system and volume: this acquisition system circuit board requires to embed in the conventional three-component analog detector housing, adopts powered battery, thereby wants cube little, low in energy consumption.In the design of native system from demand analyses such as power consumption, integrated level, sampling rate, precision, determine to select for use 24, at a high speed, delta sigma type ADC.
In concrete model is selected by consulting relevant new component data, choose novel 24 high-speed AD converter AD7760, the AD7764 of ADI company and novel 24 high-speed AD converter ADS1271, the ADS1274 of TI company respectively and carry out performance evaluation and comparison, by taking all factors into consideration the index of present new A DC, single channel, single AD scheme are selected in decision for use, in order to save the space, select the analog to digital converter ADS127 of integrated four ADC of monolithic, the interface circuit of ADS1274 and microcontroller MCU as shown in Figure 3.
In the design in flexible aspect power consumption, the precision, the mode of operation of ADS1274 is set to adjustable mode, sample frequency is set to adjustable according to the needs of practical application, the data output rating of ADS1274 is relevant with the clock rate C LK of chip after model selection, utilize the output of ACLK of MCU as CLK in the practical application, frequency can be by the program setting; The SPI interface is adopted in data output, The data TDM pattern displacement output after the conversion, in the design with FORMAT[2:0] be set to 000, make serial data output adopt the SPI interface protocol, the logical DOUT1 pin of all crossing of the data that all passages are gathered is exported, and each passage outputs data bits is put the employing dynamic assignment.VREFP and VREFN are the reference power source of A/D conversion among the figure, connect the reference voltage signal of 2.5V in the design.
(3) storer and Interface design thereof
In the design of Acquisition Circuit, the data that need to gather deposit in the storer, select the data of novel ferroelectric storer FM25L256 storage of collected in the design for use, FM25L256 is produced, is had the low-power consumption sections electrical storage (hereinafter to be referred as FRAM) of 256Kb by RAMTRON, it had both had the characteristic of SRAM and DRAM fast reading and writing, the non-volatile characteristic that has EEPROM and Flash again, the system of formation have that interface is simple, occupying system resources is few, non-volatile, do not have characteristics that read-write postpones.Utilize FM25L256 to realize image data buffer-stored function in the design, Fig. 4 is the interface circuit of FM25L256 and MSP430F2232, adopts the spi bus transmission data of standard among the design.
(4) auxiliary circuit and explanation thereof
Auxiliary circuit mainly is made up of reset circuit, condition indication circuit, signal input interface and serial communication interface, and wherein reset circuit comprises electrification reset and hand-reset, realizes by external reset button during hand-reset; Condition indication circuit is used to indicate the Acquisition Circuit current working state, does the state indication with two kinds of change color of dichromatic LED in the design; Signal input interface is used for the seismic signal signal of sensor is sent into the input port of Acquisition Circuit, can send into the triple channel differential signal in the design; Serial communication interface is used for carrying out the information transmission with external host, uses the RS-485 communication interface in the design.
The design of 2 softwares
(1) program design of acquisition control module
The software section of earthquake data acquisition circuit board mainly comprises: communication module, acquisition control module, low-power consumption administration module, drift calibration module, wherein the function of acquisition control module is the collection of control data under the condition that sets acquisition parameter, and the data after will gathering deposit in the random access memory; Before the data acquisition, at first carry out the initialization setting of acquisition parameter, wait for the trigger pip that outside focus starts then, Fig. 5 is the program design flow process of earthquake data acquisition control module, when carrying out data acquisition, all interruptions of system mask, and enter the triggering state for the treatment of, in case detect the trigger collection signal, system namely starts A/D converter and carries out data acquisition, multi-channel data after the conversion is at first sent in the register of MCU, writes then among the random access memory FRAM, and the biography that provides according to main frame is counted order and sent the data of gathering to main frame by serial ports at last.
(2) program design of communication module
The function of communication module is order transmission and the exchanges data of finishing between main frame and the collecting circuit board.Communicating by letter each time all by host-initiated between main frame and the collecting circuit board, correctly reply end with collecting circuit board (abbreviation slave), be the order of response main frame transmission in time, avoid information dropout, receive the The data inquiry mode, and when receiving, each field is carried out real-time inspection by agreement, to improve the reliability of communication.The order that main frame sends has two kinds of forms, and a kind of is the order that each slave is carried out respectively, the order of for example shaking hands, puts ginseng order, and it needs each slave to reply respectively, and at this moment the address of communicating by letter with slave of main frame and each slave is to send in turn in the cycle; Another kind of order is the broadcast type order, be that each slave needs the order of execution simultaneously, for example acquisition, background inspection order, at this moment all slaves are carried out corresponding operation simultaneously after receiving order, but only by the wherein a certain slave return response information of main frame appointment.Be the reliability of guaranteeing to communicate by letter, when main frame sends command frame to slave, be provided with overtime detection and retransmitting function (allowing to retransmit number of times is three times), the program design flow process of communication module as shown in Figure 6.
(3) program design of drift calibration module
Zero point drift refers to that the output valve of measurement departs from the value at zero point when input signal is zero.Whether the size of zero point drift and zero point stable is one of main source that causes measuring error, eliminates this influence should select for use at hardware on the one hand lowly drift about, amplifier and A/D converter that temperature stability is high, make drift value as far as possible little; Be exactly the advantage of utilizing microprocessor on the other hand, adjust by software.The implementation procedure of this Acquisition Circuit drift calibration is: at first the ginseng order of putting that sends according to main frame sets acquisition parameter, forward the ground connection input end to by microprocessor control MUX then, start back of the body inspection operation, gather one group of data, then these group data are tried to achieve a mean value, this average is deposited in the internal RAM unit of MCU, in the data acquisition afterwards, the data after at every turn will gathering and the average that records previously subtract each other get final product the data after proofreading and correct.In the gatherer process afterwards, revise acquisition parameter if desired, then remeasure a drift value by above-mentioned steps again and deposit in the former unit and get final product, the mathematical model of computing is:
D=drift value in the formula; Each sample value of I=; N=sampling point ordinal number; The total number of samples of N=.
(4) program design of low-power consumption administration module
In order to realize low power operation and the management to acquisition system, corresponding low power consumption control signal will be provided on hardware design on the one hand, will cooperate corresponding supervisory instruction exactly on software on the other hand, Fig. 7 is the low-power consumption management process of this Acquisition Circuit system.After the start, system initialization, wait for the control command that receives main frame, at this moment should keep normal operation to guarantee receiving the Host Command at any time except communicating circuit, remaining circuit all is in invalid running status, should make them enter low-power consumption stand-by state (analog-to-digital conversion module and memory module place idle mode) this moment, after acquisition system receives the order that main frame sends, just makes corresponding circuit module enter normal operating conditions.For avoiding communicating circuit and MCU to be in blindly waiting status, be provided with overtime testing circuit in the design, if wait timeout then MCU enter the standby mode, open serial ports and interrupt, have only when detecting the serial ports interruption, MCU just returns normal operating conditions.
Claims (4)
1. 24 earthquake data acquisition circuit boards of an intrinsic safety type, constituted by hardware and software two parts, hardware components mainly comprises: power converting circuit, acquisition control circuit, signal conditioning circuit, mould/number conversion circuit and auxiliary circuit, and software section mainly comprises: communication module, acquisition control module, low-power consumption administration module and drift calibration module; Wherein power converting circuit adopts the separately mode of power supply of digital power and analog power, is made of corresponding digital power translation circuit and analog power translation circuit respectively; The acquisition control circuit part mainly is made up of the trigger circuit that microcontroller, startup are gathered; Signal conditioning circuit mainly is made up of anti-confusion filtering circuit and variable gain operational amplifier; Mould/number conversion circuit mainly is made up of reference source circuit, 24 high-performance A/D converters and data-carrier store; Auxiliary circuit mainly is made up of reset circuit, condition indication circuit, signal input interface and serial communication interface; The annexation of each several part is: signal input interface is used for inserting the output signal of outside triple channel seismic sensor, the signal that inserts directly with three independently the input end of anti-confusion filtering circuit be connected, the output terminal of filtering circuit is connected to three independently input ends of variable gain amplifier, the output signal line of amplifier is connected with three pairs of differential input ends of A/D converter respectively, the data output signal line of A/D converter is connected with the data input pin of microprocessor, the signal wire of data-carrier store is connected with the corresponding port of microcontroller respectively, serial communication interface chip one end is connected with microcontroller, the other end is connected with the interface of external transmission lines, analog power output and modulate circuit, the power input of A/D converter and reference source circuit is connected, the output of digital power and data-carrier store, microcontroller, the power input of reset circuit digital device connects; This collecting circuit board can be realized collection, storage and the digital data transmission function of the seismic signal that 1～3 passage is adjustable; The output signal of outside earthquake signal transducer is sent into the input end of anti-confusion filtering circuit by signal input interface, send into the input end of variable gain operational amplifier again through filtered signal, send into 24 high-performance A/D converters through amplified analog signal and carry out mould/number conversion, digital signal after the conversion at first deposits in the data-carrier store, is sent to external host by serial line interface then; This collecting circuit board can cooperate with main frame, form distributed earthquake data acquisition system (DAS), this collecting circuit board can and main frame between realize transmission and the data exchanging function of order, acquisition parameter, background inspection, data acquisition, data transmission can be set according to the command execution that main frame sends, be data exchange operation, wherein acquisition parameter comprises port number, sampling interval, sampling number; The acquisition channel number can be set to 3 passages, 2 passages or 1 passage by software, and it is optional that sampling interval is that 100us～2ms increases progressively, sampling number be 512,1024,2048 optional; By selecting high-performance, low energy-consumption electronic device and circuit optimization design, low-power consumption management for use, realized the circuit inbeing safe explosion prevention, have that volume is little, low in energy consumption, precision is high, dustproof, waterproof, explosion-proof characteristics, this collecting circuit board both can with the seismic signal sensor, be that detector core body is packaged in formation high-performance 24 bit digital three-component seismometers in the same housing, can encapsulate simultaneously 24 triple channel earthquake data acquisitions of formation high-performance station again separately, be applicable to the distributed earthquake data acquisition system (DAS) under engineering site and the coal mine.
2. earthquake data acquisition circuit board according to claim 1, it is characterized in that: the hardware and software that is integrated with the seismic signal collection, storage and the digital data transmission that realize that 1～3 passage is adjustable on the collecting circuit board, the device that each channel selecting is identical constitutes independently anti-confusion filtering circuit and amplifying circuit respectively, by selecting high-performance, low energy-consumption electronic device and circuit optimization design, low-power consumption management for use, realized the circuit inbeing safe explosion prevention; Wherein amplifier is selected high performance programmable instrument amplifier AD8253 for use, analog to digital converter is selected for use is 24 of the TI company high-performance of producing, 4 passages are gathered analog to digital converter ADS1274 synchronously, can realize the synchronous acquisition function of four-way at most, that the microcontroller reason device that realization collection is controlled is selected for use is super low-power consumption type microcontroller MSP430F2232, select the data of novel ferroelectric storer FM25L256 storage of collected for use, the selected device of Acquisition Circuit and wire laying mode all satisfy the design of essence safety requirement, it is little that circuit board even three times three anti-lacquers of spraying after debugging is finished, collecting circuit board have a volume, low in energy consumption, the precision height, dustproof, waterproof, explosion-proof characteristics.
3. earthquake data acquisition circuit board according to claim 1, it is characterized in that: this collecting circuit board can cooperate with main frame, form distributed earthquake data acquisition system (DAS), this collecting circuit board can and main frame between realize transmission and the data exchanging function of order, acquisition parameter, background inspection, data acquisition, data transmission can be set according to the command execution that main frame sends, be data exchange operation, wherein acquisition parameter comprises port number, sampling interval, sampling number; The acquisition channel number can be set to 3 passages, 2 passages or 1 passage by software, and sampling number is 512,1024,2048 optional, and it is optional that sampling interval is that 100us～2ms increases progressively.
4. earthquake data acquisition circuit board according to claim 1, it is characterized in that: this Acquisition Circuit plate bulk is little, and its physical dimension only is π * 50
2Mm
2Both can with the seismic signal sensor, be that detector core body is packaged in 24 three-component digital geophones of formation high-performance in the same housing, can encapsulate separately again simultaneously and constitute 24 triple channel earthquake data acquisitions of high-performance station, leave on the collecting circuit board triple channel seismic signal input interface, with the RS-485 serial communication interface of main-machine communication, be applicable to the earthquake data acquisition under engineering site and the coal mine.
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|---|---|---|---|---|
| CN102722961A (en) * | 2012-06-03 | 2012-10-10 | 孙骏 | Geomagnetic anomaly alarm |
| CN102809760A (en) * | 2012-07-24 | 2012-12-05 | 合肥国为电子有限公司 | Self-adaptive low-power consumption method suitable for overland geophysical exploration data acquisition station |
| CN103389512B (en) * | 2013-07-17 | 2016-05-18 | 中国海洋石油总公司 | For the digital collection transmission circuit of air gun source near-field wavelet and auxiliary signal |
| CN104749629A (en) * | 2015-03-27 | 2015-07-01 | 承德石油高等专科学校 | Tight sandstone oil and gas reservoir multiwave AVO response system |
| CN104749636A (en) * | 2015-04-09 | 2015-07-01 | 北京中矿大地地球探测工程技术有限公司 | Distributed slot wave seismic prospecting system and prospecting method thereof |
| CN105425713A (en) * | 2015-11-02 | 2016-03-23 | 合肥国为电子有限公司 | Low-consumption control method suitable for geophysical exploration cross station |
| CN107453754A (en) * | 2017-06-30 | 2017-12-08 | 南京理工大学 | Positive pressure of shock wave signal condition system |
| CN110031892A (en) * | 2019-04-19 | 2019-07-19 | 中国电建集团铁路建设有限公司 | Round 7 node interactive mode fine motion data collection systems and process |
| CN111208557A (en) * | 2020-03-03 | 2020-05-29 | 何良 | Intelligent data recovery and correction method for underground distributed channel wave seismograph |
| CN112711212A (en) * | 2021-01-10 | 2021-04-27 | 上海东庭自动化技术有限公司 | A acquisition circuit for explosion-proof robot is patrolled and examined to intelligence |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101221422A (en) * | 2008-01-04 | 2008-07-16 | 北京工业大学 | Portable vibration data collector and method based on embedded technology |
| CN201340457Y (en) * | 2009-01-22 | 2009-11-04 | 北京港震机电技术有限公司 | General-purpose seismic data collecting and recording device |
| CN201546712U (en) * | 2009-10-12 | 2010-08-11 | 西安威尔罗根能源科技有限公司 | Multi-channel AD parallel conversion acoustic logging instrument |
| EP1483601B1 (en) * | 2002-03-12 | 2010-10-27 | Sercel, Inc. | Data management for seismic acquisition using variable compression ratio as a function of background noise |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6934219B2 (en) * | 2002-04-24 | 2005-08-23 | Ascend Geo, Llc | Methods and systems for acquiring seismic data |
-
2010
- 2010-11-25 CN CN 201010558921 patent/CN102012518B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1483601B1 (en) * | 2002-03-12 | 2010-10-27 | Sercel, Inc. | Data management for seismic acquisition using variable compression ratio as a function of background noise |
| CN101221422A (en) * | 2008-01-04 | 2008-07-16 | 北京工业大学 | Portable vibration data collector and method based on embedded technology |
| CN201340457Y (en) * | 2009-01-22 | 2009-11-04 | 北京港震机电技术有限公司 | General-purpose seismic data collecting and recording device |
| CN201546712U (en) * | 2009-10-12 | 2010-08-11 | 西安威尔罗根能源科技有限公司 | Multi-channel AD parallel conversion acoustic logging instrument |
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