CN102183785B - Multi-redundant synchronous data acquiring device and method of non-cable seismograph - Google Patents
Multi-redundant synchronous data acquiring device and method of non-cable seismograph Download PDFInfo
- Publication number
- CN102183785B CN102183785B CN 201110048931 CN201110048931A CN102183785B CN 102183785 B CN102183785 B CN 102183785B CN 201110048931 CN201110048931 CN 201110048931 CN 201110048931 A CN201110048931 A CN 201110048931A CN 102183785 B CN102183785 B CN 102183785B
- Authority
- CN
- China
- Prior art keywords
- acquisition
- clock
- synchronous
- time service
- master control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Electric Clocks (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a multi-redundant synchronous data acquiring device and method of a non-cable seismograph. The method is a multi-redundant synchronous data acquiring method of a non-cable seismograph based on a UTC (universal time coordinated) time system, and comprises the following steps: through introducing a local auxiliary UTC time service system and combining a GNSS (global navigation satellite system) time service technology, constructing a multi-redundant TUC time service system so as to guarantee that a non-cable seismograph acquiring station can synchronize the data acquisition under the condition of loading a GNSS time service signal; before acquiring the seismic data, firstly timing the local UTC, selecting one of continuous record or UTC time interval or UTC time point to set a synchronous acquiring task so as to generate a synchronous data acquiring task list; and marking the UTC time scale information on the acquired seismic data according to the UTC time service information, storing in a local memory, and finally obtaining a complete synchronous single shot record. The synchronous seismic data can be acquired by the non-cable seismograph acquiring station under any severe satellite signal condition by using the acquiring device and the acquiring method; and the synchronous precision is superior to 4 microseconds, and the synchronous requirement of resource exploration is completed satisfied.
Description
Technical field:
The present invention relates in a kind of geophysical survey without the cable telemetric seismic instrument, especially relate to without the many redundant datas take UTC Universal Time Coordinated as synchronous base in cable memory-type seismograph and gather synchronous method.
Background technology:
The seismograph development experience simulated earthquake instrument, centralized seismograph, three large stages of Modern distribution formula telemetric seismic instrument, current main flow seismograph is the wire-link telemetry seismograph, and its Typical Representative is 408UL, the 428XL of French Sercel company and the Scorpion seismic prospecting system of American I/O N company.Take 428XL as example, modern telemetric seismic instrument adopts the wired connection client/server, and measuring system is comprised of master station (control and management overall measurement workflow), cross-station (forwarding measuring command and data), acquisition station (seismic data acquisition unit) and power station (power supply unit).Thousands of up to ten thousand earthquake-capturing stations link together by data transmission cable, and are connected with cross-station, and cross-station is connected with main frame by cable, consist of a geological data measurement network.The earthquake-capturing station is " single station single track " structure, a seismic sensor (vibro-pickup is responsible at a station, claim again seismoreceiver) collection of simulant signal, the total data that the sum of all acquisition stations is measuring system gathers the road number, and seismic prospecting requires the synchronously log-on data collection of all acquisition channels.428XL is in order to realize the synchronous data collection of all acquisition channels, set special-purpose acquisition and synchronizing signal and built synchronization mechanism in data transmission cable, acquisition and the synchronizing signal that send by data transmission cable line monitoring master station at all earthquake-capturings station, acquisition station is log-on data collection immediately after synchronizing signal being detected, thereby realizes the synchronous data collection of all acquisition channels.After the acquisition station data acquisition, by the data transmission cable line, data are sent to master station, master station receives the also geological data of all acquisition station synchronous acquisitions of playback, and the Real-Time Monitoring collection result also deposits hard disk in.The seismographic advantage of modern wire-link telemetry is that data communication speed is fast, the road load capacity is high, is widely used; But for the earthquake data acquisition under the complex-terrain surface conditions, as mountain region, Loess Gullys etc., the wire-link telemetry seismograph is due to the constraint of cable, and inconvenience is large in surface relief, the area construction of ravines and guillies criss-cross.In order to solve the earthquake data acquisition problem in complex-terrain area, can adopt the earthquake-capturing station structure without the cable memory-type, cable is broken away from the earthquake-capturing station, the geological data of field acquisition is stored in internal non-volatile memory, thereby adapt to the data acquisition of complex area, Here it is without the cable telemetric seismic instrument.Without the cable telemetric seismic instrument in order synchronously to need a kind of common Time Service System.
Current, usually adopt the time service of gps satellite positioning system as Time Service System without the cable telemetric seismic instrument, that CN01134726.0 discloses a kind of " gps satellite time service telemetering seismograph " and CN200910169540.1 discloses is a kind of " utilize note carry out that seismograph is controlled and the method for data transmission and short message control and transmission type without the cable seismograph " all adopt the gps satellite time service as synchronous clock, and then realize the synchronous data collection between many earthquake-capturings stations.But, near mountain, under the relatively poor condition of the satellite-signal such as jungle dense area, GPS positioning system time service information can not obtain, or because may causing a collection of acquisition station, the reason gps signal losing locks such as electromagnetic interference (EMI) can't realize synchronous data collection, make whole acquisition system to work and then to paralyse, this has limited to a great extent without the seismographic application of cable.
Summary of the invention:
Purpose of the present invention is exactly for above-mentioned the deficiencies in the prior art, provides a kind of without many redundancies of cable seismograph synchronous data collection device;
The purpose of this invention is to provide a kind of without many redundancies of cable seismograph synchronous data collection method.
The objective of the invention is to be achieved through the following technical solutions:
Without many redundancies of cable seismograph synchronous data collection device, to connect one to one 1-128 without the cable seismograph acquisition station by PC through the 1-128 of school clock controller interface, 1 power supply adaptor is connected in parallel 1-128 without the cable seismograph acquisition station, the GNSS receiver module is through bus driver 1-128 the Bussing connector that be connected in parallel, and 1-128 Bussing connector connects 1-128 one to one without the cable seismograph acquisition station.
Acquisition station is to connect respectively CF card, GPS receiver, Ethernet interface and synchronous DRAM by the ARM-Linux system, the ARM-Linux system is connected with the simulated modulation circuit through programmable logic device (PLD), programmable logic device (PLD) connects GPS receiver pulse per second (PPS) output terminal, constant-temperature crystal oscillator connects digital filter and programmable logic device (PLD), and the four-way analog input connects and composes through simulated modulation circuit, Δ ∑ modulator and digital filter and programmable logic device (PLD).
acquisition station school clock controller is by the GNSS receiver module, FPGA intelligent clock system, crystal oscillator and acquisition station master control and acquisition system consist of, GNSS receiver module time service information is exported and is connected with acquisition station master control system and acquisition system through the COM2 mouth, GNSS synchronization pulse CLK2 is connected with acquisition station master control and acquisition system with self-lock controller, FPGA intelligent clock system is by self-lock controller, frequency divider, Gregorian calendar clock intelligent counter, SPI interface and put the digital-to-analogue piece and consist of, put the school clock information that the reception acquisition station master control of digital-to-analogue piece and acquisition system send through the CRL2 mouth, and insert Gregorian calendar clock counter, self-lock controller, frequency divider and crystal oscillator consist of the counting gauge tap of Gregorian calendar clock counter, controlled through CRL1 by acquisition station master control and acquisition system, Gregorian calendar clock intelligent counter synchronizing pulse CLK1 is connected with acquisition station master control and acquisition system, the time service information of Gregorian calendar clock intelligent counter is connected with acquisition station master control and acquisition system by COM port or COM device or COM1 by the SPI interface conversion.
The acquisition station synchronous data collection is to be connected with analog channel by analog channel 1 to connect digital filter through Δ ∑ modulator I respectively, analog channel 3 is connected with analog channel respectively and is connected digital filter through Δ ∑ modulator II, and external sync clock, crystal oscillator connect respectively digital filter and consist of.
The acquisition station master control is connected to be connected with receiver module through multipath clock switch, self-locking trigger controller and data acquisition system (DAS) by local UTC Time Service System to be connected with master control system with acquisition system, master control system is connected with the multipath clock switch, and master control system connects respectively local UTC Time Service System and receiver module consists of.
Without many redundancies of cable seismograph synchronous data collection method, comprise following order and step:
A, before carrying out earthquake data acquisition, during at first to local UTC timekeeping system school, be referenced as the UTC time service information of GNSS during its school;
Export the positive pulse of a fixed width after b, GNSS receiver module are located successfully p.s., CLK2 is the second synchronizing pulse train of GNSS receiver module output, and its rising edge identifies this second initial time; After each second synchronizing pulse, COM2 follows output UTC time service information;
At first c, acquisition station master control system are controlled self-lock controller and are closed the output of frequency divider clock, make Gregorian calendar clock counter be in halted state, then in t
2Insert in Gregorian calendar clock counter after constantly playing the extraction UTC time and this time being added 1 second, open self-lock controller after set of time is complete;
The next second synchronizing pulse of d, GNSS receiver module can cause the counter-rotating of self-locking flip-flop states, and frequency divider is in t
3Constantly start elapsed time clock CP output, drive Gregorian calendar clock counter and UTC time reference time synchronisation, from t
4Constantly play output high precision synchronizing pulse second CLK1.Gregorian calendar clock timer temporal information is by the output of SPI interface, and collaborative CLK1 signal provides high precision standby markers for acquisition station;
E, selection continuous recording or one of UTC time interval or three kinds of patterns of UTC time point are carried out the synchronous acquisition task setting, generate the synchronous data collection task list;
F, lay without the cable seismograph in the work-yard, at first detect GNSS time service synchronized clock system by special device without the cable seismograph, if satellite-signal is effective, adopt GNSS time service synchronous clock as the reference synchronization source of Acquisition Circuit, the acquisition tasks list that implementation step e sets;
G, by step f, satellite-signal is detected, if satellite-signal is invalid, switch synchronous clock source, adopt local UTC time system as the reference synchronization source of Acquisition Circuit;
H, each earthquake acquisition station according to the UTC Time Service System time service information of self, are stamped UTC time scale information with the geological data that collects according to default task type and the autonomous implementation data acquisition tasks of task list, deposit local storage in;
I, all seismic-data traces of contained UTC time tag in geological data are carried out absolute UTC time unifying, finally obtain complete synchronous single shot record.
Beneficial effect: can guarantee to realize synchronous earthquake data acquisition without the cable seismograph acquisition station under any abominable satellite-signal condition without many redundancies of cable seismograph data acquisition simultaneous techniques, synchronization accuracy is better than 4 microseconds, satisfies the synchronous requirement of resource exploration fully.
Description of drawings:
The local UTC time system of accompanying drawing 1 bus type is school clock controller structured flowchart in batches
Accompanying drawing 2 earthquake-capturing station structure block diagrams
Accompanying drawing redundancy more than 3 UTC Time Service System structured flowchart
Accompanying drawing 4 is without cable seismograph acquisition station synchronous data acquisition circuit structured flowchart
Accompanying drawing redundancy clock more than 5 commutation circuit structured flowchart
The local UTC time system of accompanying drawing 6 is to the clock sequential chart
Embodiment:
Be described in further detail below in conjunction with drawings and Examples:
Without many redundancies of cable seismograph synchronous data collection device, to connect one to one 1-128 without the cable seismograph acquisition station by PC through the 1-128 of school clock controller interface, 1 power supply adaptor is connected in parallel 1-128 without the cable seismograph acquisition station, the GNSS receiver module is through bus driver 1-128 the Bussing connector that be connected in parallel, and 1-128 Bussing connector connects 1-128 one to one without the cable seismograph acquisition station.
Acquisition station is to connect respectively CF card, GPS receiver, Ethernet interface and synchronous DRAM by the ARM-Linux system, the ARM-Linux system is connected with the simulated modulation circuit through programmable logic device (PLD), programmable logic device (PLD) connects GPS receiver pulse per second (PPS) output terminal, constant-temperature crystal oscillator connects digital filter and programmable logic device (PLD), and the four-way analog input connects and composes through simulated modulation circuit, Δ ∑ modulator and digital filter and programmable logic device (PLD).
acquisition station school clock controller is by the GNSS receiver module, FPGA intelligent clock system, crystal oscillator and acquisition station master control and acquisition system consist of, GNSS receiver module time service information is exported and is connected with acquisition station master control system and acquisition system through the COM2 mouth, GNSS synchronization pulse CLK2 is connected with acquisition station master control and acquisition system with self-lock controller, FPGA intelligent clock system is by self-lock controller, frequency divider, Gregorian calendar clock intelligent counter, SPI interface and put the digital-to-analogue piece and consist of, put the school clock information that the reception acquisition station master control of digital-to-analogue piece and acquisition system send through the CRL2 mouth, and insert Gregorian calendar clock counter, self-lock controller, frequency divider and crystal oscillator consist of the counting gauge tap of Gregorian calendar clock counter, controlled through CRL1 by acquisition station master control and acquisition system, Gregorian calendar clock intelligent counter synchronizing pulse CLK1 is connected with acquisition station master control and acquisition system, the time service information of Gregorian calendar clock intelligent counter is connected with acquisition station master control and acquisition system by COM port or COM device or COM1 by the SPI interface conversion.
The acquisition station synchronous data collection is to be connected with analog channel by analog channel 1 to connect digital filter through Δ ∑ modulator I respectively, analog channel 3 is connected with analog channel respectively and is connected digital filter through Δ ∑ modulator II, and external sync clock, crystal oscillator connect respectively digital filter and consist of.
The acquisition station master control is connected to be connected with receiver module through multipath clock switch, self-locking trigger controller and data acquisition system (DAS) by local UTC Time Service System to be connected with master control system with acquisition system, master control system is connected with the multipath clock switch, and master control system connects respectively local UTC Time Service System and receiver module consists of.
Without many redundancies of cable seismograph synchronous data collection method, comprise following order and step:
A, before carrying out earthquake data acquisition, during at first to local UTC timekeeping system school, be referenced as the UTC time service information of GNSS during its school;
Export the positive pulse of a fixed width after b, GNSS receiver module are located successfully p.s., CLK2 is the second synchronizing pulse train of GNSS receiver module output, and its rising edge identifies this second initial time; After each second synchronizing pulse, COM2 follows output UTC time service information;
At first c, acquisition station master control system are controlled self-lock controller and are closed the output of frequency divider clock, make Gregorian calendar clock counter be in halted state, then in t
2Insert in Gregorian calendar clock counter after constantly playing the extraction UTC time and this time being added 1 second, open self-lock controller after set of time is complete;
The next second synchronizing pulse of d, GNSS receiver module can cause the counter-rotating of self-locking flip-flop states, and frequency divider is in t
3Constantly start elapsed time clock CP output, drive Gregorian calendar clock counter and UTC time reference time synchronisation, from t
4Constantly play output high precision synchronizing pulse second CLK1.Gregorian calendar clock timer temporal information is by the output of SPI interface, and collaborative CLK1 signal provides high precision standby markers for acquisition station;
E, selection continuous recording or one of UTC time interval or three kinds of patterns of UTC time point are carried out the synchronous acquisition task setting, generate the synchronous data collection task list;
F, lay without the cable seismograph in the work-yard, at first detect GNSS time service synchronized clock system by special device without the cable seismograph, if satellite-signal is effective, adopt GNSS time service synchronous clock as the reference synchronization source of Acquisition Circuit, the acquisition tasks list that implementation step e sets;
G, by step f, satellite-signal is detected, if satellite-signal is invalid, switch synchronous clock source, adopt local UTC time system as the reference synchronization source of Acquisition Circuit;
H, each earthquake acquisition station according to the UTC Time Service System time service information of self, are stamped UTC time scale information with the geological data that collects according to default task type and the autonomous implementation data acquisition tasks of task list, deposit local storage in;
I, all seismic-data traces of contained UTC time tag in geological data are carried out absolute UTC time unifying, finally obtain complete synchronous single shot record.
Based on the UTC time system without the synchronous seismic data acquisition method of the many redundancies of cable seismograph, by introducing local auxiliary UTC (universal coordinated time) Time Service System, in conjunction with GNSS (GLONASS (Global Navigation Satellite System)) Service of Timing, build the UTC Time Service System of many redundancies, to guarantee without the cable seismograph acquisition station in the situation that lose the GNSS time signal still can synchronous data collection.
Take the UTC time as time standard, by time section, time point or the continuous recording start time of appointment, be the additional time scale information of the geological data of field acquisition without the cable seismograph acquisition station; After data record, then adopt special synchronizing software, with data synchronizing, systematization.
Local UTC Time Service System by the Special Purpose Programmable integrated chip, design a calendar year calendar clock, can carry out calendar year accurate timing when walking, and possesses the clocking informations such as year, month, day, hour, min, second, week, possesses leap year calculating debugging functions; Synchronizing signal second of output simultaneously.For guaranteeing the precision of local UTC time system, guarantee on the one hand the degree of accuracy of its initial time, adopt on the other hand the crystal oscillator of high stability, improve its timekeeping performance.Its initial time precision by the school clock network of GNSS time service device structure bus type, can be carried out the school clock of each maximum 128 acquisition stations in batches, and its initial time is synchronizeed with international standard UTC; The timekeeping performance of local calendar clock depends on the precision of local crystal oscillator, its error is progressively accumulated when walking the time, accumulate time error in the scope of a permission for controlling local calendar clock, adopt when school " periodically " mode of operation: before carrying out acquisition tasks every day without the cable seismograph, at first by clock network school, school clock, then it is walked time error and just can be controlled in certain limit in n hours at most continuously thereafter.Through textual criticism, adopt 10
-10The crystal oscillator of degree of stability is as the clock source of calendar clock, and the cumulative maximum error in 10 hours is 3.6 microseconds, can reach the demand that use in the resource exploration field fully.
In order to stamp the UTC markers without the geological data that the cable seismograph acquisition station collects, designed the UTC clock synchronization circuit, the core of two CS5372 and a slice CS5376 composition data Acquisition Circuit, local UTC time system or GNSS system second synchronizing signal as the synchronisation source of acquisition station, mode log-on data Acquisition Circuit running with external break events finally realizes the synchronous data collection of a plurality of acquisition stations; Two synchronous clock sources are each other after school clock once in 10 hours of regulation, its synchronism can satisfy the requirement of resource exploration, namely both all can be used as the synchronous clock source of Acquisition Circuit, when the GNSS satellite-signal is available, preferentially adopt the GNSS time signal as the data collection synchronous clock source; In addition, for can be GNSS loses satellite-signal because of external cause after system still can synchronous acquisition, designed the synchronous clock commutation circuit, in time the synchronizing signal with data acquisition circuit switches to standby local UTC time system.
By above-mentioned many redundancies UTC simultaneous techniques, GNSS time dissemination system and local UTC time system are as the synchronous clock source of two complementations, can guarantee effectively and in two kinds of situations of GNSS receiving system loss satellite-signal all can guarantee the synchronism of acquisition station data acquisition at the GNSS satellite-signal, reach the purpose of reliable synchronization.
The present invention is based on coordinate universal time and builds without the local UTC Time Service System of cable seismograph acquisition station, combine with the GNSS time dissemination system and consist of many redundancies UTC Time Service System, for the acquisition station earthquake data acquisition provides reliable synchronous clock, guarantee all earthquake-capturings stations data collection synchronous.Wherein the GNSS time dissemination system as main synchronous clock source, adopts as preferential clock source when the GNSS satellite-signal is effective; Local UTC time timekeeping system adopted when the GNSS satellite-signal loses efficacy as standby synchronous clock source.
Adopt default task list mode without cable seismograph acquisition station field construction, task type comprises continuous recording, UTC time interval and UTC time point isotype.Each earthquake acquisition station according to the UTC Time Service System time service information of self, is stamped UTC time scale information with the geological data that collects according to default task type and the autonomous implementation data acquisition tasks of task list, deposits local storage in.
Without the cable seismograph acquisition station many redundancy times service system as shown in Figure 1, the time service via satellite of GNSS receiver module, can export the UTC temporal information, and be aided with a second synchronizing signal, consist of the main Time Service System at earthquake-capturing station, it depends on the quality of work-yard satellite-signal, when the place satellite-signal is effective, preferentially adopts this synchronous clock source; Local UTC timekeeping system is as shown in Fig. 1 dotted line frame, by Gregorian calendar clock intelligent counter, crystal oscillator, frequency divider, self-lock controller, put the digital-to-analogue piece, the SPI interface forms, crystal oscillator produces the high precision oscillator signal, after the frequency divider frequency division as the work clock of Gregorian calendar clock intelligent counter, Gregorian calendar clock intelligent counter is completed the clocking capability of date, Hour Minute Second, and output second synchronizing signal; Self-lock controller, when putting the digital-to-analogue piece and being used for the school; The SPI interface is used for output Gregorian calendar temporal information, and it consists of the standby time system at earthquake-capturing station together with synchronizing signal CLK2 with second, the UTC synchronizing information is provided when the GNSS satellite-signal is invalid.In continuous 10 hours scopes after when effective period of service of local UTC timekeeping system is once the school.
Before carrying out earthquake data acquisition, during at first to local UTC timekeeping system school, be referenced as the UTC time service information of GNSS during its school.During the school, process as shown in Figure 2, is exported the positive pulse of a fixed width p.s. after the GNSS receiver is located successfully, and CLK2 is the second synchronizing pulse train of GNSS receiver output, and its rising edge identifies this second initial time; After each second synchronizing pulse, COM2 follows output UTC time service information.At first the acquisition station master control system is controlled self-lock controller and is closed the output of frequency divider clock, makes Gregorian calendar clock counter be in halted state, then in t
2Insert in Gregorian calendar clock counter after constantly playing the extraction UTC time and this time being added 1 second, open self-lock controller after set of time is complete; The next second synchronizing pulse of GNSS receiver can cause the counter-rotating of self-locking flip-flop states, and frequency divider is in t
3Constantly start elapsed time clock CP output, drive Gregorian calendar clock counter and UTC time reference time synchronisation, from t
4Constantly play output high precision synchronizing pulse second CLK1.Gregorian calendar clock timer temporal information is by the output of SPI interface, and collaborative CLK1 signal provides high precision standby markers for acquisition station.
Efficient during for the raising school has designed school Time Controller in batches, and its structure as shown in Figure 3.Take GNSS receiver module reference clock during as the school, bus when building the school by bus driver; Network when each earthquake acquisition station accesses the school by Bussing connector.The school Time Controller is connected with exterior PC, instruction when its receives from the school of PC computer, and when when controlling corresponding acquisition station and opening the school, switch carries out the school, and state returns to PC during high-ranking officers; Each acquisition station is completed this process successively, the purpose when reaching quick school.
After during through the school without the cable seismograph acquisition station, the satellite-signal state of Real-Time Monitoring GNSS receiver, when satellite-signal is effective, synchronous clock source take the GNSS time dissemination system as acquisition station, process one by one default task list, by the system for acquiring seismic data that second, the synchronizing signal triggering was made of CS5372 and CS5376, circuit structure as shown in Figure 4; When the GNSS satellite-signal is lost, immediately enable local calendar clock timer, clock switch circuit as shown in Figure 5, the acquisition station master control system determines satellite-signal lose after, by the multipath clock switch with set the synchronous refernce clocks source of Acquisition Circuit from the lock control trigger.
After completing corresponding data acquisition task without the cable seismograph acquisition station by default task list, geological data is recovered to the mass memory unit of workstation by the Special back receiving apparatus.By extracting the UTC synchronous time mark information in each acquisition station geological data file, the geological data of all acquisition stations is carried out the alignment of UTC absolute time, just can obtain complete synchronous single shot record.
Claims (4)
1. one kind without many redundancies of cable seismograph synchronous data collection device, it is characterized in that, to connect one to one 1-128 without the cable seismograph acquisition station by PC through the 1-128 of school clock controller interface, 1 power supply adaptor is connected in parallel 1-128 without the cable seismograph acquisition station, the GNSS receiver module is through bus driver 1-128 the Bussing connector that be connected in parallel, and 1-128 Bussing connector connects 1-128 one to one without the cable seismograph acquisition station;
To connect respectively CF card, GPS receiver, Ethernet interface and synchronous DRAM by the ARM-Linux system without the cable seismograph acquisition station, the ARM-Linux system is connected with the simulated modulation circuit through programmable logic device (PLD), programmable logic device (PLD) connects GPS receiver pulse per second (PPS) output terminal, constant-temperature crystal oscillator connects digital filter and programmable logic device (PLD), and the four-way analog input connects and composes through simulated modulation circuit, Deltasigma modulator and digital filter and programmable logic device (PLD);
the school clock controller is by the GNSS receiver module, FPGA intelligent clock system, crystal oscillator and acquisition station master control and acquisition system consist of, GNSS receiver module time service information is exported and is connected with acquisition station master control system and acquisition system through the COM2 mouth, GNSS synchronization pulse CLK2 is connected with acquisition station master control and acquisition system with self-lock controller, FPGA intelligent clock system is by self-lock controller, frequency divider, Gregorian calendar clock intelligent counter, SPI interface and put the digital-to-analogue piece and consist of, put the school clock information that the reception acquisition station master control of digital-to-analogue piece and acquisition system send through the CRL2 mouth, and insert Gregorian calendar clock intelligent counter, self-lock controller, frequency divider and crystal oscillator consist of the counting gauge tap of Gregorian calendar clock intelligent counter, controlled through CRL1 by acquisition station master control and acquisition system, Gregorian calendar clock intelligent counter synchronizing pulse CLK1 is connected with acquisition station master control and acquisition system, the time service information of Gregorian calendar clock intelligent counter is connected with acquisition station master control and acquisition system by COM port or COM device or COM1 by the SPI interface conversion.
According to claimed in claim 1 without many redundancies of cable seismograph synchronous data collection device, it is characterized in that, to be connected with analog channel by analog channel 1 to connect digital filter through the Deltasigma modulator I respectively without the synchronous data collection of cable seismograph acquisition station, analog channel 3 is connected with analog channel respectively and is connected digital filter through the Deltasigma modulator II, and external sync clock, crystal oscillator connect respectively digital filter and consist of.
According to claimed in claim 1 without many redundancies of cable seismograph synchronous data collection device, it is characterized in that, the acquisition station master control is connected to be connected through multipath clock switch, self-locking trigger controller with the GNSS receiver module by local UTC Time Service System to be connected with data acquisition system (DAS) with acquisition system, data acquisition system (DAS) is connected with master control system, master control system is connected with the multipath clock switch, and master control system connects respectively local UTC Time Service System and the GNSS receiver module consists of.
4. according to the acquisition method without many redundancies of cable seismograph synchronous data collection device claimed in claim 1, it is characterized in that, comprise the following steps:
A, before carrying out earthquake data acquisition, during at first to local UTC Time Service System school, be referenced as the UTC time service information of GNSS during its school;
Export the positive pulse of a fixed width after b, GNSS receiver module are located successfully p.s., CLK2 is the second synchronizing pulse train of GNSS receiver module output, and its rising edge identifies this second initial time; After each second synchronizing pulse, COM2 follows output UTC time service information;
At first c, acquisition station master control and acquisition system are controlled self-lock controller and are closed the output of frequency divider clock, make Gregorian calendar clock intelligent counter be in halted state, then in t
2Insert in Gregorian calendar clock intelligent counter after constantly playing the extraction UTC time and this time being added 1 second, open self-lock controller after set of time is complete;
The next second synchronizing pulse of d, GNSS receiver module can cause the counter-rotating of self-locking flip-flop states, and frequency divider is in t
3Constantly start elapsed time clock CP output, drive Gregorian calendar clock intelligent counter and UTC time reference time synchronisation, from t
4Constantly play output high precision synchronizing pulse second CLK1, Gregorian calendar clock intelligent counter temporal information is by the output of SPI interface, and collaborative CLK1 signal provides high precision standby markers for acquisition station master control and acquisition system;
E, selection continuous recording or one of UTC time interval or three kinds of patterns of UTC time point are carried out the synchronous acquisition task setting, generate the synchronous data collection task list;
F, lay without the cable seismograph in the work-yard, at first detect GNSS time service synchronized clock system by special device without the cable seismograph, if satellite-signal is effective, adopt GNSS time service synchronous clock as the reference synchronization source without cable seismograph acquisition station synchronous data acquisition circuit, the acquisition tasks list that implementation step e sets;
G, by step f, satellite-signal is detected, if satellite-signal is invalid, switch synchronous clock source, adopt local UTC Time Service System as the reference synchronization source without cable seismograph acquisition station synchronous data acquisition circuit;
H, task type and the autonomous implementation data acquisition tasks of task list respectively preset without cable seismograph acquisition station basis according to the local UTC Time Service System time service information of self, are stamped the UTC time scale information with the geological data that collects, and deposit local storage in;
I, all seismic-data traces of contained UTC time tag in geological data are carried out absolute UTC time unifying, finally obtain complete synchronous single shot record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110048931 CN102183785B (en) | 2011-03-01 | 2011-03-01 | Multi-redundant synchronous data acquiring device and method of non-cable seismograph |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110048931 CN102183785B (en) | 2011-03-01 | 2011-03-01 | Multi-redundant synchronous data acquiring device and method of non-cable seismograph |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102183785A CN102183785A (en) | 2011-09-14 |
| CN102183785B true CN102183785B (en) | 2013-05-08 |
Family
ID=44569983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110048931 Expired - Fee Related CN102183785B (en) | 2011-03-01 | 2011-03-01 | Multi-redundant synchronous data acquiring device and method of non-cable seismograph |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102183785B (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164927B (en) * | 2011-12-15 | 2015-04-01 | 中国核动力研究设计院 | Earthquake monitoring system of dual-redundancy nuclear power station |
| CN103163544A (en) * | 2013-03-20 | 2013-06-19 | 中国海洋石油总公司 | Method and system for positioning shot point |
| CN103558648B (en) * | 2013-11-08 | 2016-09-28 | 吉林大学 | Untethered well ground electrical method and microseism combined system and method for testing |
| CN103605153B (en) * | 2013-11-13 | 2016-03-02 | 吉林大学 | The compatible synchronous device of polytype earthquake source and synchronous method |
| CN103760594B (en) * | 2014-01-21 | 2014-10-01 | 武汉大学 | Integrated system of GNSS receiver and seismometer |
| CN103885093A (en) * | 2014-03-07 | 2014-06-25 | 吉林大学 | Method for fault localization of cable-free seismograph |
| CN104267622B (en) * | 2014-09-09 | 2017-02-08 | 中国航天科技集团公司第九研究院第七七一研究所 | Satellite telemetering acquisition device and method based on tasks and time |
| CN104270567B (en) * | 2014-09-11 | 2019-12-17 | 深圳市南航电子工业有限公司 | High-precision synchronous multi-channel image acquisition system and time synchronization method thereof |
| CN104391321B (en) * | 2014-12-16 | 2017-05-24 | 吉林大学 | Low-power-consumption power supply management system and management method for cable-less storage type seismograph |
| CN104950329A (en) * | 2015-05-13 | 2015-09-30 | 北京中矿大地地球探测工程技术有限公司 | In-seam seismic focus triggering recorder and recording method thereof |
| CN106507433B (en) * | 2016-11-30 | 2019-08-20 | 吉林大学 | A kind of seismic detector sub-data transmission cluster Design of Routing Protocol method |
| CN108693553A (en) * | 2017-04-06 | 2018-10-23 | 河南理工大学 | System is monitored based on the mine microquake of internet and supercomputer |
| CN108227561A (en) * | 2017-12-08 | 2018-06-29 | 中国航空工业集团公司成都飞机设计研究所 | A kind of markers alignment schemes of multiplicated system data acquisition |
| CN107894609B (en) * | 2017-12-15 | 2024-04-09 | 合肥国为电子有限公司 | Low-power-consumption portable vibration trigger switch integrated with wireless transmitting function |
| CN109738954B (en) * | 2019-03-14 | 2024-03-15 | 南方科技大学 | Clock synchronization circuit, clock synchronization method and submarine seismograph |
| CN110177220B (en) * | 2019-05-23 | 2020-09-01 | 上海图趣信息科技有限公司 | Camera with external time service function and control method thereof |
| CN110286406A (en) * | 2019-06-20 | 2019-09-27 | 合肥国为电子有限公司 | A kind of active source node type seismic acquisition system and acquisition method based on threshold triggers |
| CN110673201B (en) * | 2019-09-12 | 2022-03-08 | 吉林大学 | Low-power-consumption wired seismograph based on single-chip FPGA and high-speed ad hoc network method thereof |
| CN111090115B (en) * | 2020-01-03 | 2021-09-07 | 吉林大学 | Distributed integrated single-channel node seismograph |
| CN111679316B (en) * | 2020-06-19 | 2023-04-28 | 中煤科工集团西安研究院有限公司 | Time alignment method and system for mining multi-seismic acquisition system |
| CN112785828B (en) * | 2020-12-14 | 2022-04-22 | 江苏集萃微纳自动化系统与装备技术研究所有限公司 | Seismic exploration system and method with wireless communication and wired network mixed |
| CN113534242B (en) * | 2021-07-15 | 2024-08-23 | 南方海洋科学与工程广东省实验室(广州) | Method, device, equipment and storage medium for acquiring microseism observation data |
| CN114019563B (en) * | 2022-01-05 | 2022-04-01 | 南京邮电大学 | Seismic exploration synchronous acquisition method based on GPS and 5G dual-channel high-precision time service |
| CN118034012B (en) * | 2024-02-28 | 2024-09-17 | 中国科学院地质与地球物理研究所 | GNSS clock synchronization method and device based on low power consumption |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442706A (en) * | 2002-03-01 | 2003-09-17 | 法国石油研究所 | Method and equipment for proceeding earthquate survey using synchronous emitted earthquake signal based on false random sequence |
| CN101839996A (en) * | 2009-03-20 | 2010-09-22 | 中国石油天然气集团公司 | Synchronization method for collecting large-range seismic data |
| JP2010281771A (en) * | 2009-06-08 | 2010-12-16 | Mitsutoyo Corp | Synchronous recording system and synchronous recording method |
-
2011
- 2011-03-01 CN CN 201110048931 patent/CN102183785B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1442706A (en) * | 2002-03-01 | 2003-09-17 | 法国石油研究所 | Method and equipment for proceeding earthquate survey using synchronous emitted earthquake signal based on false random sequence |
| CN101839996A (en) * | 2009-03-20 | 2010-09-22 | 中国石油天然气集团公司 | Synchronization method for collecting large-range seismic data |
| JP2010281771A (en) * | 2009-06-08 | 2010-12-16 | Mitsutoyo Corp | Synchronous recording system and synchronous recording method |
Non-Patent Citations (1)
| Title |
|---|
| 杨泓渊等.无缆遥测地震仪网络同步采样技术.《仪表技术与传感器》.2009,(第3期),第15-18页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102183785A (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102183785B (en) | Multi-redundant synchronous data acquiring device and method of non-cable seismograph | |
| CN102866621B (en) | High-precision GPS (Global Positioning System) 1pps (1 Pulse Per Second) timer and timing method of spacecraft | |
| CN102291169B (en) | Onboard high-accuracy time synchronization method for satellite | |
| US7885143B2 (en) | Seismic acquisition system | |
| CN102880045B (en) | Synchronous clock time output system based on global positioning system (GPS), compass satellite, optical fiber B code and high-accuracy constant-temperature crystal oscillator | |
| CN103152117B (en) | A kind of embedded high-precision network time server system | |
| CN202798718U (en) | Electric power time synchronization device for Beidou GPS (global positioning system) double satellite system | |
| CN101741401B (en) | Time service system of radio receiver and time service method | |
| CN101202545A (en) | High-accuracy data receiving time service instrument | |
| CN101540500B (en) | Data synchronization method of digital optical fiber differential protective clock by relay method | |
| CN102710409A (en) | Time synchronizing device with safety isolation function | |
| CN102566408A (en) | Calibration system for satellite clock and calibration method thereof | |
| CN101534003A (en) | Data synchronization method for digitized fiber differential protection device | |
| CN209433024U (en) | Clock synchronization circuit and ocean bottom seismograph | |
| CN105511256A (en) | Insulation online high-precision synchronization measurement and time marking method based on master station GPS | |
| WO2020181852A1 (en) | Clock synchronization circuit, clock synchronization method and seabed seismograph | |
| CN111257608B (en) | Synchronous processing method of multi-core intelligent electric energy meter and multi-core intelligent electric energy meter | |
| CN202818369U (en) | Clock server supporting IEC61850 clock information publishing | |
| CN105242974A (en) | Time acquisition method and device | |
| CN103064109A (en) | Method and apparatus for correcting timing function in nodal seismic data acquisition unit | |
| CN113015175B (en) | Method and device for any-duty-cycle synchronous networking of high-frequency ground wave radar | |
| CN110231655A (en) | One kind being suitable for underground in-seam seismograph | |
| CN109714125A (en) | Wireless time synchronous method, system and satellite between satellite capsule | |
| CN109039515A (en) | A kind of high-precision real-time time source generation method that B code is synchronous | |
| CN115865252B (en) | High-precision GNSS time synchronization method capable of setting period |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20140301 |