CN1200286C - Multiwave multi-component earthquake data collecting system - Google Patents
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Abstract
The present invention relates to a multi-wave multi-component seismic data collecting system. The whole system is composed of a main system and a plurality of auxiliary systems controlled by the main system, wherein the main system is a portable PC which built-in control software, communication software, processing software, etc.; auxiliary systems mainly comprises a data collecting control circuit and an analog-digital conversion circuit; the auxiliary systems have power sources or are externally connected with power sources; the circuit boards of the auxiliary systems have small size and contain three channels, and the auxiliary systems can be directly embedded in a three-component wave detector to form a digital three-component wave detector; the auxiliary systems can be used as a three-channel collecting station. Remote distributed control is adopted between the main system and the auxiliary systems, and the auxiliary systems are connected in series through multi-core shielded cables; the auxiliary systems can be freely combined without redundant devices. The system adopts the digital transmission of collected signals, and therefore, the system has high interference resistance; the whole system integrates the geophysics, the modern electronic technology, the communication and information processing technology, etc., and therefore, the system has light weight, powerful function and wide range of application; the present invention can be used for multi-wave multi-component seismic exploration in all types, multi-wave engineering investigation and survey, surface wave exploration, etc.
Description
Technical field
The invention belongs to the geophysical exploration technology field, is a kind of seismic prospecting equipment, is applicable to the multiwave multicomponent earthquake exploration, many ripples engineering investigation, ground roll exploration etc.
Technical background
Seismic prospecting has higher degree of accuracy, high resolution and big superiority such as penetration depth with it and forms one of geophysical exploration technology into important.Along with fast development of modern industry, industry requirements such as energy extraction and construction work have more and more meticulousr understanding to underground geologic condition, therefore seismic exploration technique have been proposed higher accuracy requirement.For making seismic prospecting adapt to the demand of engineering site better, seismic data acquisition method develops into three-dimensional from two dimension, develop into the multi-wave and multi-component exploration by simple simple component exploration, its purpose promptly is to ask for abundant more reservoir parameter with seismic prospecting data, for engineering site provides comprehensive good service.With regard to method of work, the multiwave multicomponent earthquake exploration is the effective means that improves seismic prospecting precision and the many engineering geological problems of solution at the geologic condition complex area, and to make the multiwave multicomponent earthquake exploration reach the ideal designs effect, just must guarantee its data acquisition quality, superior and suitable exploration equipment at first will be arranged.
The seismic prospecting equipment is mainly by focus, wave detector and system for acquiring seismic data are formed, system for acquiring seismic data (being seismograph) has experienced many for development course, in recent years, the extrapolated telemetric seismic instrument of new generation of state, as OPSEIS811-14, I/O SYSTEM II and SN388 etc., their principal feature is: equipment is mainly by main frame, acquisition station, intersect and stand, compositions such as power supply station, the instrument sampling rate is on the low side, generally the branch fourth gear is chosen between 0.5～4ms, 24 A/D converters have been used in the acquisition station, all simulating signal filtering have been cancelled, only adopt fixed gain amplifier, dynamic range can reach 120～130dB, and practical multichannel seismic instrument is still based on wired digital transmission, and transmission medium is twisted-pair feeder or concentric cable.Novel system for acquiring seismic data also is in the development research stage in China, at present domestic also ripe without comparison telemetric seismic instrument of new generation.With regard to external system for acquiring seismic data of new generation, although it has digital transmission, the road number is many, advantages such as distributed control, yet its part high-performance is to consider for commerce to a great extent, not only expend a large amount of foreign exchanges, and the three-dimensional three-component construction requirement of partial properties incompatibility, though and telemetric seismic instrument of new generation utilizes the acquisition station of distributed control to shorten the transmission range of simulating signal, but and fail to eliminate the transmission of simulating signal and the cross talk effects between analog channel, the twentieth century end, the imagination that Japan OYO company once proposed integrated exploration equipment does not but put into practice.
When carrying out the exploration of high resolving power multi-wave seismic, prospecting instrument also requires to carry out perfect information simultaneously and receives except that requiring to satisfy the conditions such as wide dynamic range, high s/n ratio, high sampling rate.Here so-called perfect information reception just is meant and receives multiple tracks, multi-thread, multicomponent information as far as possible.Yet utilize existing seismic prospecting equipment to carry out the multiwave multicomponent earthquake exploration, its structure and performance still have some deficits and defective, can not really realize high precision and high-level efficiency, and it is embodied in:
1. gather the analog signal transmission that all there is certain distance in front end, though novel telemetric seismic instrument uses acquisition station to shorten the transmission range of simulating signal, but do not remove the transmission of simulating signal, just make the transmission range of simulating signal suitable with conventional centralized seismograph by acquisition station, in the mimic transmission line that it still keeps, still there is intertrack crosstalk, power frequency interference and day electrical interference etc., transmission cable also can cause decay to effective output signal of wave detector in addition, and owing to wave detector differs apart from the Acquisition Circuit distance, make cable resistance not wait, also can cause the ratio of damping difference of each road wave detector, thereby influence the correct interpretation and the utilization of amplitude versus frequency characte to received signal, had a strong impact on the quality of acquired signal; A plurality of analog channels of while are also deposited, and circuit is various, the preparation of construction heaviness, and work on the spot labour intensity is big, inefficiency.
2. the quality of earthquake data acquisition is decided by each link in the gatherer process, wherein mainly comprise reception, transmission and the collection of data, the common ground of existing seismic prospecting instrument is the high target of electric property that covets, and does not note making great efforts to reach the best of breed effect of instrument.Existing seismic prospecting instrument is only pursued the high dynamic range of simulating signal and digital signal change-over circuit part, has but ignored the influence that front end receives wave detector and analog signal transmission in the link; The degree of distortion of existing super wave detector is no more than 0.1%, the relative dynamic scope is less than 60dB, add that simulated earthquake ripple signal that wave detector picks up can be subjected to the influence of various disturbing factors in transmission course, dynamic indicator further descends, therefore, the high target of change-over circuit part can not really play a role.
3. all there is the contradiction of system's road ability size and range of application in existing various seismic prospecting instruments, and modifiability of its total configuration is poor.At present, be used for the conventional centralized seismograph of shallow seismic exploration, owing to adopt centralized control, the road number of its configuration is generally limited, mostly is fixedly road number, as 6,12,24 roads etc., the road ability is alternative poor, and instrument dynamic range is generally less, and antijamming capability is not strong.Though and telemetric seismic instrument has advantage such as acquisition station is many to digital transmission, the road number of main control system, distributed control, yet, because the restriction of the dynamic range of acquisition system front end wave detector and the influence of analog transmission cable, the high target parameter of part of devices is to consider for commerciality to a great extent in the seismograph, not only increased equipment cost, and the equipment system is huge, and the sampling rate of instrument is on the low side simultaneously, only is applicable to the exploration of big data quantity deep layer.Solve above these problems, must develop the road number and change new type digital multiwave multi-component earthquake data collecting system flexibly.
Summary of the invention
For adapting to the demand for development of multiwave multicomponent earthquake exploration, deficiency at existing seismic prospecting equipment, develop the novel multiwave multi-component earthquake data collecting system of a cover, the present invention utilizes the incorporate design philosophy of detection, with 3-component earthquake sensor and data acquisition, control is integrated in one with circuit such as communicate by letter, form novel digital intelligence three-component seismometer, its 3-component earthquake sensor is selected vertical, shear wave all has the core body of the different performance index of splendid response also to link to each other with the front end input channel of surface-mounted integrated circuit respectively, make the seismic signal that picks up directly send into data acquisition circuit, realize the digitizing of acquired signal original position, suppressed the influence of neighbourhood noise and other interference sources to the utmost, and Acquisition Circuit is partly through optimizing, improve the sampling rate of system simultaneously, high sampling rate is 0.02ms, increase the bandwidth of input signal, for really reaching the fine-resolution of many ripple explorations, the ink-bottle effect of dwindling earthquake data acquisition provides the highest guarantee; Intelligence three-component seismometer inside carries acquisition software and data communication software, therefore gathering number can pass through software setting as required, under the situation that hardware remains unchanged, both can be used for the three-component data acquisition of special multi-wave and multi-component exploration, can be used for the simple component data acquisition of conventional survey again, thereby strengthen the applicability of instrument.Secondly, utilize high performance portable PC as main control unit, and dispose corresponding monitoring software, communication software, recording storage, pre-service, data processing, many ripples are resolved and visual software, and on this basis according to the characteristics employing bus type structure realization main frame of seismic data transmission systems and the interconnection of each intelligent three-component seismometer, realize the reliable transmission of data between each node by formulating perfect Data Transport Protocol, main frame and each intelligent wave detector are all by the communication protocol design of communications software of formulating, and then the digitalized network of formation system for acquiring seismic data; The quantity of intelligence wave detector can increase or reduce according to user's needs, make total system both improve the quality of antijamming capability and acquired signal, but flexible combination and fractionation has again simultaneously strengthened its scope of application.The multiwave multi-component earthquake data collecting system principal feature is as follows:
1. intelligent three-component seismometer has been realized the digitizing of acquired signal original position, suppressed the influence of neighbourhood noise and other interference sources to the utmost, for really reaching the fine-resolution of many ripple explorations, the ink-bottle effect of dwindling earthquake data acquisition provides the highest guarantee, and intelligent three-component seismometer inside carries acquisition software and data communication software, therefore gathering number can pass through software setting as required, under the situation that hardware remains unchanged, both can be used for the three-component data acquisition of special multi-wave and multi-component exploration, can be used for the simple component data acquisition of conventional survey again, thereby strengthen the applicability of instrument.
2. for adapting to the requirements at the higher level of seismic prospecting to wave detector, the each several part of the Acquisition Circuit of intelligent three-component seismometer formed be optimized, simplify hardware configuration, improve the sampling rate of system simultaneously, increase the bandwidth of input signal, thereby make intelligent wave detector have the response splendid to longitudinal and transverse ripple, the tracer signal dynamic range is big, bandwidth, precision height.
With high-grade portable PC as main control system, total system is carried out control able to programme, systemic-function has obtained enhancing; Easy to operate, the automaticity height.The built-in monitoring of main frame, communication, recording storage, pre-service, data processing and visualization procedure module; The function of main frame is to issue various command by close friend's man-machine interface and communication interface to each intelligent wave detector on the one hand, make intelligent wave detector on request image data and will gather after data be sent to main frame, the data of gathering can be stored with user-defined format simultaneously, and can carry out format conversion; Be exactly data processing on the other hand, data processing focuses on the dissection process of multi-wave and multi-component exploration, simultaneously compatible various conventional digital processing methods, and utilize small echo and analysis of neural network method, the data-handling capacity of raising system, the achievement data 3 d visualization of processing.
4. main frame and each intelligent wave detector adopt bus type structure to realize interconnection, and main frame and each intelligent wave detector are all regarded a node in the network as.Main frame is articulated on the data transmission bus by the bus interface converter, and each intelligent wave detector is articulated on the data transmission bus by communication interface; System carries out master-slave mode communication according to distributed control strategy, portable main machine is made main website, each intelligent wave detector is made slave station, realize the reliable transmission of data between each node by formulating perfect Data Transport Protocol, main frame and each intelligent wave detector are all by the communication protocol design of communications software of formulating, and then the digitalized network of formation system for acquiring seismic data; Actual needs according to system for acquiring seismic data, data transmission bus can selection standard RS-485 bus or CAN bus, the principal feature of native system data transmission is: (1) main frame and each intelligent wave detector are all regarded a node in the network as, each node carries data buffer, the transmission of image data does not require real-time Transmission, data transmission rate only is subjected to the restriction that the time interval requires between twice data acquisition, thereby can reduce the requirement to data transmission rate; (2) each intra-node carries communication software, and data transfer sequence can arbitrarily be provided with by software, with the residing location independent of each node, thereby has increased the dirigibility of arranged; (3) node number---be the quantity of intelligent wave detector, can increase easily as required or reduce, a whole set of equipment energy combination in any, main frame drives few to a slave, up to a hundred slaves of as many as, slave quantity only is subjected to the restriction of message transmission rate and serial port of host computer configuring condition, thus the contradiction of resolution system road ability size and range of application well, and wiring is simple, cost performance is high.
Embodiment
The present invention is achieved in that characteristics and the requirement according to the multiwave multicomponent earthquake exploration, at first come the composition structure of sophisticated systems equipment electric part with intelligent, incorporate mentality of designing, promptly the acquisition controlling of seismic signal and analog to digital conversion are put into system foremost, combine together with three-component seismometer, form digital wave detector truly.Multiwave multi-component earthquake data collecting system mainly is made up of main frame and a plurality of intelligent three-component seismometer, softwares such as the built-in control of main frame, communication and processing, and link to each other with slave by serial communication bus, realize distributed control (as Fig. 1), slave mainly comprises earthquake data acquisition circuit and acquisition control circuit, be aided with power circuit, start-up circuit and communication interface, only be connected (see figure 2) between main frame and slave and slave and slave with First Five-Year Plan core shielded cable, slave quantity can increase and decrease arbitrarily according to the real work needs, on-the-spot combined and instant and irredundant equipment.
Table 1 is listed the comparison of the key technical indexes between the present invention's (multiwave multi-component earthquake data collecting system) and several representative existing equipment, as seen main equipment of the present invention only is made up of portable main machine and intelligent three-component seismometer, when being used for the multiwave multicomponent earthquake exploration, equipment system is simplified greatly.
The comparison of several existing exploration systems of table 1. when exploration (be used for many ripples) and the design system
The software and hardware of multiwave multi-component earthquake data collecting system is composed as follows:
1. main frame
(1) host hardware requirement
The main frame of multiwave multi-component earthquake data collecting system is become by high-grade portable PC mechanism, its hardware index is: the above processor of PIII800MHz, the above RAM of 64M, the above hard-disk capacity of 10G, WIN98 and above operating system are installed, and are equipped with the RS232 serial ports.Main frame is connected with the bus interface converter by the RS232 serial ports, interface convertor links to each other with the bus interface of slave by bus, principal and subordinate's machine carries out beam communication according to addresses distributed, and slave is realized long-distance distribution formula data acquisition and control by main frame issued command parameter acquisition and with sending data.
(2) control of data acquisition and communication
The control that host data is gathered is finished by " the multiwave multicomponent earthquake data acquisition software " of supporting exploitation, the major function of this software is to control a plurality of slaves by the serial ports of main frame, to the slave issue an order, the information that the reception slave returns or the data of collection, the oscillogram that shows the slave image data, and a data of gathering stores with certain format.Software master interface is made up of a main viewfinder (display is set to 800 * 600 or 1024 * 768 pixels) and two rows control key, and main viewfinder shows the multiple tracks waveform, but window level and vertical scrolling.Last row's control key comprises: collecting location, survey line numbering, sampling interval, height cut-off frequency, communication serial ports, slave addresses, sampling number, sampling time-delay, work component and display mode.Under arrange control key and have: displaing coordinate, confirm, shake hands, put ginseng, back of the body inspection, sampling, transmission, enhancing, record.
(3) data processing
Multiwave multicomponent earthquake exploration and routinely the difference of seismic exploration be that the signal of its reception had both comprised compressional wave, comprise shear wave and transformed wave again, when being used for the ground roll exploration, useful signal is again a ground roll, therefore the requirement of multiple seismic event fine processing can not be satisfied in conventional earthquake data processing work station, must develop corresponding data processing software, " the multiwave multicomponent earthquake data processing software " of the supporting exploitation of the present invention mainly comprises: show and modular converter, pretreatment module, data processing module, many ripples parsing module and visualization model, the system acquisition data are stored with user-defined format, and can carry out format conversion, it also can be handled on other workstations and explain, data processing focuses on the dissection process of multi-wave and multi-component exploration, simultaneously compatible various conventional digital processing methods, and utilize methods such as small echo and analysis of neural network, the data-handling capacity of raising system, the achievement data 3 d visualization of processing.The workstation major function comprises:
1. format conversion
The data that the multiwave multicomponent earthquake data acquisition software is noted are stored with user-defined format, and user-defined format is " file header+road ginseng+track data ", 128 bytes of file head length wherein, and long 20 bytes of road ginseng, track data is sampling number (an integer number).Software can convert log file to the general SEG form of geological data, and seismologic record conversion cost system user-defined format that also can other record formats are known is wrapped at the multiwave multicomponent earthquake data processing software and to be handled and explain.
2. pre-service
Pre-service mainly comprises: the road computing, take out collection, amplitude balance, normal moveout correction etc.
3. conventional digital signal processing
Conventional digital signal processing comprises: filtering, analysis of spectrum, infinitesimal analysis, skew, stack etc.
4. special processing
Special processing is: wavelet analysis and analysis of neural network.
5. many ripples are resolved
The multi-wave and multi-component engineering investigation utilizes the data message that enriches of many ripples exploration, resolves, calculates the required various dynamic mechanics parameters of engineering design, becomes modulus, modulus of shearing etc. as unit weight, Poisson ratio, the body of destination media body.
6. visual
After two dimension, the processing of three-dimensional many ripples survey data, the achievement data form two dimension, 3-D data volume.
2. slave
Multiwave multi-component earthquake data collecting system is as the instrument of working in the open air, removing requires system to have the high-fidelity of picking up, the ability of high s/n ratio and high-resolution seismic exploration signal, also should make total system miniature, low-power consumption, its main principle of design is: simplify analog-and digital-circuit all in the conventional earthquake data acquisition equipment to the utmost, the seismic data processing function of former cause hardware circuit realization, giving host data process software system realizes, adopt wideband during collection, the Guangxin breath receives, like this, both can reduce the hardware circuit volume, and can avoid again causing the property irretrievable of useful signal to lose because of the valve effect of analog device.Slave hardware circuit principle block diagram such as Fig. 4 mainly comprise:
(1) acquisition control circuit
The slave data acquiring control circuit is mainly formed by microprocessor (MCU), after MCU receives the order of main frame transmission, system is carried out initialization, and the control Acquisition Circuit is carried out data acquisition by the parameter that receives, gather the data of coming and deposit in earlier among the RAM, the retrieval command of sending by main frame is sent to main frame with the data among the RAM by serial line interface then.
(2) data acquisition circuit
The slave data acquisition circuit is made up of passage front-end circuit, multistage programmable amplifier, multi-way switch and analog to digital converter (being called for short ADC) etc., the triple channel simulating signal is imported by the passage front end, behind the one-level programmable amplifier, enter multi-way switch, and then enter the secondary programmable amplifier, carry out analog to digital conversion by A/D converter afterwards, the digital signal after the conversion is read and is stored in RAM by control circuit control.
(3) other
Slave hardware also comprises: trigger starting circuit, power circuit and communication interface etc., the slave power supply can be by inside or external power source, internal electric source is made up of Ni-MH battery and a power transfer module of two joint 2Ah, can guarantee that the slave continuous working is more than 8 hours.External power source can drive several slaves for direct current 5V input by a power supply during field work.
(4) major parameter index
Passage: 3
Gain: 0～72db
Precision: 16 or 24
Sampling interval: 0.02～4ms manually is provided with
Sampling number: 512,1024,2048
Program control filtering: numeral input
Supply voltage: 5v
Unit power consumption: 0.6W
Size: Φ 100 * 70mm
3
Weight:＜2Kg
3. relevant auxiliary equipment
The equipment relevant with multiwave multi-component earthquake data collecting system has focus and detector core body,
(1) focus
Multiwave multi-component earthquake data collecting system is at different method of works, requirement to focus is the seismic event that will gather that can inspire suitable energy, the focus test should be carried out according to exploration task and condition of work in the scene, by the suitable relatively focus of test and Selection.
(2) detector core body
According to the characteristic of three-component seismometer detection signal, in conjunction with the test of various core body performance parameters is gone and found out what's going on, consider the range of application of multi-wave and multi-component exploration simultaneously, the optional scope of its each component performance parameter index sees Table 2:
The technical indicator distribution range of table 2 three-component seismometer core body
| Title | The X component | The Y component | Z component |
| Free-running frequency (Hz) | 8～14±2.5％ | 8～14±2.5％ | 40～60±2.5％ |
| Coil resistance (Ω) | 300～750±2.5％ | 300～750±2.5％ | 500～800±2.5％ |
| The open circuit damping | 0.25～0.30 | 0.25～0.30 | 0.25～0.35 |
| And resistance damping | 0.6～0.7±2.5％ | 0.6～0.7±2.5％ | 0.65～0.75±2.5％ |
| Sensitivity (V/cm/s) | 0.25～0.28±2.5％ | 0.25～0.28±2.5％ | 0.27～0.29±2.5％ |
| Distortion (%) | ＜0.1 | ＜0.1 | ＜0.05～0.1 |
| Alias (Hz) | 200～250 | 200～250 | 350～500 |
| Coasting body quality (g) | 10～12 | 10～12 | 10～15 |
| Insulation resistance (Ω) | ＞tens of megohms | ||
The work on the spot flow process of multiwave multi-component earthquake data collecting system is: before the test, base area seismic exploration task and exploration geology condition are selected the work on the spot method, design arrangement survey line and measuring point during on-the-spot test, are installed slave earlier, focus is set, and they are communicated with main frame, explosive source starts the slave image data then, slave is with image data loopback main frame, and main frame receives and record data.
Description of drawings
Fig. 1 is the composition structural drawing of multi-wave and multi-component data acquisition system (DAS), constitute by the some intelligent three-component seismometer under main frame and the control thereof, each slave---be that intelligent three-component seismometer has the triple channel input, when using RS-485 bus building network, individual host management slave quantity is no more than 127, when using CAN bus building network, individual host management slave quantity is no more than 109.
Fig. 2 illustrates the structure function of five core lines between main frame and slave and slave, and wherein 2,3 is data line, and 4 for starting the line positive pole, 1 positive source during for slave use external power source, and 5 is shared ground wire.
Fig. 3 is host data collection and processing main flow block diagram, after the start, start " multiwave multicomponent earthquake data acquisition software ", at first the serial ports that will use is carried out initialization, send to slave then and shake hands and put the ginseng order, at this moment, the operator can utilize " back of the body inspection " function to observe the ground unrest situation, and eliminate noise source as far as possible, when also can be used as post-processed, its noise background picks the reference of making an uproar.Afterwards, explosive source, triggering each slave samples simultaneously, and loopback image data, main frame shows the data of gathering and can repeatedly strengthen in the enhancement region with the form of oscillogram, data after the enhancing go on record with user-defined format, and recording data files is in " multiwave multicomponent earthquake data processing work station " enterprising row format conversion and various processing and explanation.
Fig. 4 slave schematic block circuit diagram mainly is made up of acquisition control circuit, data acquisition circuit, random access memory, trigger starting circuit, power circuit and communication interface.
Fig. 5 provides the main flow of slave work, during work on the spot, open slave, slave promptly enters init state, wait for receiving the main frame issued command,, then after command interpretation, press order request and carry out corresponding operation if in the time of waiting for permission, receive Host Command, interrupt if wait timeout is then opened serial ports, enter idle mode.
Fig. 6 is the slave data acquisition flow, slave is when carrying out data acquisition, at first the ginseng order of putting that sends by main frame sets acquisition parameter, check then and have or not synchronous triggering signal, then open counter controls A/D and carry out analog to digital conversion if having, convert up to required sampling number, then once gather and finish.
Fig. 7 is the on-the-spot main process flow diagram of installing and operating of multiwave multi-component earthquake data collecting system.
Claims (5)
1. multiwave multi-component earthquake data collecting system, it mainly is made of main frame and some intelligent 3-component earthquake detectors, wherein main frame is high performance portable PC, and disposes corresponding monitoring, communication, recording storage, format conversion, pre-service, data processing, the parsing of many ripples and visual software; Intelligent 3-component earthquake detector is that 3-component earthquake sensor and data acquisition, control and telecommunication circuit are integrated in one, its 3-component earthquake sensor selects all have the core body of the different performance index of splendid response also to link to each other with the front end input channel of collecting circuit board respectively to longitudinal and transverse ripple, make the seismic signal that picks up directly send into data acquisition circuit, realize the digitizing of acquired signal original position, and its Acquisition Circuit is partly through optimizing, improve the sampling rate of system simultaneously, increase the bandwidth of input signal, wave detector inside carries acquisition software and data communication software; Main frame and each intelligent wave detector adopt bus type structure to realize interconnection, and main frame links to each other with the bus interface converter by the RS232 serial ports, and interface convertor links to each other with the communication interface of slave, and its service wire comprises data line, external power cord and startup line; System carries out master-slave mode communication according to distributed control strategy, portable main machine is made main website, each intelligent wave detector is made slave station, realize the reliable transmission of data between each node by formulating perfect Data Transport Protocol, main frame and each intelligent wave detector are all by the communication protocol design of communications software of formulating, thus the digitalized network of formation system for acquiring seismic data; During work, be connected in series in twos between the big bundle of lines main frame that constitutes with five core shielded cables and wave detector and wave detector, principal and subordinate's machine carries out beam communication according to addresses distributed, main frame drives few to a slave, as many as tens, up to a hundred slaves, the quantity of slave, can increase and decrease easily as required, the control of host data collection and data processing are finished by the multiwave multicomponent earthquake data acquisition software and the data processing software of supporting exploitation, main frame is issued various command by friendly man-machine interface and communication interface to each intelligent wave detector, data after slave also will be gathered by main frame issued command parameter acquisition data send main frame to, main frame demonstrates the oscillogram that receives data in main viewfinder, and the data storage of gathering is got up with user-defined format, data file to storage can be carried out format conversion, pre-service and data processing are at last with the achievement data 3 d visualization of handling.
2. multiwave multi-component earthquake data collecting system according to claim 1, it is characterized in that: main frame is become by portable PC mechanism, its hardware index is: the above processor of PIII800MHz, the above RAM of 64M, the above hard-disk capacity of 10G, WIN98 and above operating system are installed, and are equipped with the RS232 serial ports, the built-in software of main frame mainly comprises: monitoring module, communication module, recording storage module, pretreatment module, data processing module, many ripples are resolved and visualization model; The function of main frame is to issue various command by close friend's man-machine interface and communication interface to each intelligent wave detector on the one hand, make intelligent wave detector on request image data and will gather after data send main frame to, main frame is stored the data of gathering with user-defined format, and can carry out format conversion; Be exactly to carry out data pre-service and data processing on the other hand, data processing focuses on the dissection process of multi-wave and multi-component exploration, simultaneously compatible various conventional digital processing methods, and utilize small echo and analysis of neural network method, the data-handling capacity of raising system, the achievement data 3 d visualization of processing.
3. multiwave multi-component earthquake data collecting system according to claim 1, it is characterized in that: intelligent 3-component earthquake detector is that 3-component earthquake sensor and data acquisition, control and telecommunication circuit are integrated in one, realize the digitizing of acquired signal original position, its hardware components mainly is made up of seismic sensor core body, acquisition control circuit, data acquisition circuit, random access memory, trigger starting circuit, power circuit and communication interface; The intelligence three-component seismometer is articulated on the data transmission bus by communication interface, and accept the order that main frame sends by communication interface, carry out setting, background inspection and the data acquisition operation of acquisition parameter according to the requirement of order, gather the data of coming and deposit in earlier among the RAM, the retrieval command of sending by main frame sends the data among the RAM to main frame by serial ports then.
4. multiwave multi-component earthquake data collecting system according to claim 1, it is characterized in that: intelligent three-component seismometer inside carries acquisition software and data communication software, therefore gathering number can pass through software setting as required, under the situation that hardware remains unchanged, both can be used for the three-component data acquisition of special multi-wave and multi-component exploration, can be used for the simple component data acquisition of conventional survey again.
5. multiwave multi-component earthquake data collecting system according to claim 1, it is characterized in that: main frame and each intelligent three-component seismometer adopt bus type structure to realize interconnection, main frame is articulated on the bus by the bus interface converter, actual needs according to system for acquiring seismic data, data transmission bus can selection standard RS-485 bus or CAN bus, the principal feature of native system data transmission is: (1) main frame and each intelligent wave detector are all regarded a node in the network as, each node carries data buffer, the transmission of image data does not require real-time Transmission, data transmission rate only is subjected to the restriction at interval between twice data acquisition, thereby can reduce the requirement to data transmission rate; (2) each intra-node carries communication software, and data transfer sequence can arbitrarily be provided with by software, with the residing location independent of each node, thereby has increased the dirigibility of arranged; (3) node number---be the quantity of intelligent wave detector, can increase and decrease easily as required, and wiring is simple, the cost performance height.
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| CN100485412C (en) * | 2006-03-01 | 2009-05-06 | 北京中油天强勘探技术有限公司 | Method for controlling field earthquake prospecting collection process |
| CN100480731C (en) * | 2006-12-19 | 2009-04-22 | 中国矿业大学(北京) | Portable mine intrinsic safety seismograph |
| CN102073060B (en) * | 2009-11-24 | 2013-01-23 | 成都理工大学 | Simulation method for random properties of nuclear signals |
| CN102662191A (en) * | 2012-06-05 | 2012-09-12 | 上海通振建设工程有限公司 | Underground pipeline tomography system for underground space |
| CN104155683B (en) * | 2013-05-14 | 2016-12-28 | 中国石油集团东方地球物理勘探有限责任公司 | A kind of focus monitoring method in highly effective gathering |
| CN103760794A (en) * | 2013-12-31 | 2014-04-30 | 南京南瑞集团公司 | Automatic addressing data acquisition system and method thereof |
| TWI541528B (en) * | 2014-12-24 | 2016-07-11 | 財團法人國家實驗研究院 | Method of multi-triggering |
| CN104614760B (en) * | 2015-01-27 | 2017-03-29 | 吉林大学 | Data transmission method between multiprocessor seismic signals downhole collecting unit |
| CN107170349A (en) * | 2017-07-19 | 2017-09-15 | 东华理工大学 | Exploration geophysics teaching experiment data harvester based on wireless network |
| CN110515119A (en) * | 2018-05-22 | 2019-11-29 | 南京相同轴网络科技有限公司 | The mixed function station design scheme of digital seismograph cross-station and power station |
| CN110320551B (en) * | 2019-07-16 | 2022-01-25 | 北京建筑大学 | Full wave field data acquisition system and method for mine working face |
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2002
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