CN106802429B - A kind of quasi real time untethered network seismic detector system based on super wideband wireless module - Google Patents
A kind of quasi real time untethered network seismic detector system based on super wideband wireless module Download PDFInfo
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- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/22—Transmitting seismic signals to recording or processing apparatus
- G01V1/223—Radioseismic systems
Abstract
The present invention relates to a kind of quasi real time untethered network seismic detector system based on super wideband wireless module is equipped with aobvious control central station and multigroup acquisition node.Aobvious control central station is equipped with host computer, super wideband wireless modules A, seismic source trigger, intelligent battery and Voltage stabilizing module A；Acquisition node is equipped with one-chip computer module, super wideband wireless module B, signal condition and data acquisition module, intelligent battery and Voltage stabilizing module B；It is 14 groups that all acquisition nodes, which are compiled, every group of specified aggregation node, and data are dealt into aggregation node by other acquisition nodes in order in group, and data are dealt into aobvious control central station by each aggregation node again.Can be from group wireless internet of things after this system booting, super wideband wireless modules A, B work in 3.1~10.6GHz；This system small in volume, at low cost, battery power consumption is low, anti-tampering power is strong, each node relative position can Automatic solution, positioning accuracy ± 1.0cm, 1 μ s of synchronization accuracy.This system is suitable for promoting and applying in geological prospecting.
Description
Technical field
The present invention relates to a kind of untethered network seismic detector systems, concretely relate to one kind and being applied to engineering exploration, with
And the Exploration Domains such as oil, geology, coalfield, can artificial or earthquake data be synchronized with acquisition, storage and passed in real time
The defeated quasi real time untethered network seismic detector system based on super wideband wireless module.
Background technology
Seismic prospecting is to carry out processing analysis in surface observation seismic signal, and to it using instrument, to obtain ground
The technology of lower construction and physical properties of rock and resource information.The instrument of seismic wave is observed, including wave detector and seismic detector are explorations
The indispensable component part of process.The seismic wave generated by focus is during underground propagation, when encountering different wave impedance
Stratum when phenomena such as reflection, refraction will occur, pass through at this time the wave detector installed on ground receive, the number of record seismic wave
According to then analyzing processing being carried out with computer, to be inferred to subsurface structure and physical properties of rock, and oil, gas, coal and other mines
Produce the preservation situation of resource, it can also be used to engineering exploration and geological hazards prediction etc..Seismic detector must have high-precision data
Acquisition, time synchronization such as store and transmit at the functions.
Currently, the data transfer mode that seismic detector uses includes wire transmission mode (having cable system), wired, wireless mixing
Data transfer mode (few cable system) and wireless transmission method (untethered system).Untethered seismic detector can be divided into three classes：It is blind to adopt
System, half-blindness extraction system and real-time system.
Tradition has wired seismic detector of cable system to be firstly because systems bulky to be not easy to carry, and secondly road number is restricted,
It is unable to reach the ordered array of 100,000 ranks, in addition cost is high has influenced it and applied in actual seismic exploration.Have
Line, the seismic detector wirelessly mixed, carry out data acquisition still by the way of wired between wave detector and acquisition station, exist in real time
The problems such as property is poor, and gathered data error is larger, still remains many inconvenience in seismic prospecting.Also have untethered acquisition system by
It is laid according to wired combination, single acquisition station separate records, is combined using satellite time transfer and local clock are punctual
The method of synchronization, does not need cable connection between acquisition station, and whens post-processing data can be according to the quality of data of different acquisition point
It determines combination, big combination or small combination can be taken, can not also be combined, keep data processing more convenient flexibly, this
Also seismic data processing technique is enriched, but quality monitoring can not be carried out since it uses to be locally stored, is explored in actual seismic
It is still inconvenient when middle application.
In the past data were realized since all seismographic acquisition stations of untethered memory-type cannot send data to display and control terminal
Real-time quality controls, this is the problem of very bad solution.There is no the real-time quality of data to control, cannot know earthquake at the scene
The quality of data acquisition, including whether the work of the power of excitation energy, acquisition station normal, whether wave detector work normal etc..And
In constructing in the wild, hundreds of big guns can be excited to record daily, if having a large amount of irregular working number to discovery after indoor playback
According to, then carry out mend big gun will spend a large amount of man power and materials.So the seismographic construction method of untethered memory-type is not yet by China
Seismic prospecting circle received.
Current untethered seismic detector, there are following points：
(1) wireless communication frequency bands mostly use greatly 2.4GHz, and the frequency range is commonly used due to WIFI's, easily by co-channel interference；
(2) communications protocol is complicated, needs to operate on the main control device with operating system, needs main control processor function
Powerful, the shortcomings that thus bringing is that of high cost, power consumption is big；
(3) lacks positioning function, needs in-site measurement；Although GPS may be used but low precision, although differential GPS energy
Meet required precision, but it is of high cost, increase the equipment amount of acquisition node；
(4) either uses the wireless sensor network of ICP/IP protocol or Zigbee protocol, although having networking work(
Can, but implement more complicated, need operating system to support, to the more demanding of master control hardware；
(5) does not have synchronizing function, needs to use time service synchronous with the punctual method being combined of local clock, increases and adopt
The equipment complexity for collecting node, need to largely store useless data (95% is hash) within the period that focus does not excite,
To the more demanding of storage；
(6) the seismographic acquisition node of major parts untethered memory-type cannot in real time return to gathered data and working condition
Main controller can not receive the control instruction of main controller, can not judge on-site data gathering quality and the state of instrument.
It is above-mentioned to solve the problems, such as, in recent years, research and development are carried out to untethered memory-type seismic detector both at home and abroad,
Domestic Lin Jun team also has developed untethered telemetric seismic instrument, but its operation maximum average power consumption 4.4W, and high capacity cell is needed to supply
Electricity could realize the long-term work in field.
The country " wireless monitoring method of untethered digit storage seismic detector working condition ", Shen disclosed in November, 2011
Please number：2011100781106, which is introducing Wi-Fi wireless communication modules on the basis of untethered seismograph acquisition station, profit
The seismic detector host of seismograph acquisition station and status monitoring, laptop or PDA are formed into nothing with wireless networking technology
Line LAN carries out untethered seismic detector working condition wireless monitor by formulating special communications protocol.It is using central station+wireless
Rerouting station+acquisition station three-level network structure, each acquisition station connect the seismic instrument system of multiple analog detectors, but the technology
There are the complicated network structure, equipment is more, network transmission efficiency is low the problems such as.
The technology positioned using GPS or the Big Dipper is also proposed, as disclosed in 2015.03.04 China " untethered memory-type
Shake instrument low-power dissipation power supply management system and management method ", application number：2014107783271, which is preset in acquisition station
Low-power dissipation power supply management module, be separately connected microcontroller, big dipper module, collecting unit, GPS positioning through switching circuit by power supply
Unit, method for managing power supply controls untethered seismic detector with handheld terminal, network server or Big Dipper host computer, and then solves
To the problem of more seismic detector low power consumption control in large area region, but the technology is increased and is adopted with earthquake there are of high cost
The problems such as collecting unrelated equipment amount (such as handheld terminal, network server, Big Dipper host computer).
In conclusion the requirement of cost, volume, power consumption, communication modes and quasi real time collection, becomes with restricting untethered
An important factor for shaking instrument development.Therefore a kind of synchronization that can realize untethered acquisition system of necessary exploitation, node locating, standard are real
When on-site transfer, low-power consumption and the inexpensive untethered network seismic detector system by self-defined wireless network communication agreement, with gram
The defect for taking existing instrument and technology is conducive to the development of extensive earthquake-capturing.
Invention content
The invention aims to overcome the shortcomings of existing untethered seismic detector technology, and provide a kind of new based on ultra wide band
The quasi real time untethered network seismic detector system of wireless module, and the system provided is high with synchronous and positioning accuracy, flexibility is good,
Can high speed transmission data, quasi real time display data the features such as, also have the characteristics that it is at low cost, light-weight, small, low in energy consumption,
The quality that exploration can be improved, the progress for accelerating engineering, the labor intensity for reducing operator, are suitable for promoting and applying on a large scale.
To achieve the above object, the technical solution adopted by the present invention is that：A kind of standard based on super wideband wireless module is provided
Real-time untethered network seismic detector system shows control central station as host node if there are one aobvious control central station and multigroup acquisition node,
Acquisition node is used as from node；
The aobvious control central station is by host computer, ultra-wideband antenna A, super wideband wireless modules A, seismic source trigger, intelligence
Battery is formed with Voltage stabilizing module A, is connected using USB modes between host computer and super wideband wireless modules A, super wideband wireless module
It is connected using serial ports between A and seismic source trigger；Installation power management software and the network equipment in the host computer of aobvious control central station
The software of monitoring function, host computer is for human-computer interaction and controls entire untethered network seismic detector system and storage seismic data,
Management intelligent battery is shown with Voltage stabilizing module A, acquisition node position and acquisition node status display；The seismic source trigger is used
In connection focus, and synchronous acquisition signal is generated, all acquisition nodes is made to run simultaneously；The ultra wide band of the aobvious control central station
Super wideband wireless module B in wireless module A and each acquisition node after powering can ad-hoc wireless Internet of Things, wireless Internet of Things
Net serves as a connection between aobvious control central station and each acquisition node, is responsible for synchronizing each acquisition node, obtain for respectively adopting
The information for collecting the TWT between " principal and subordinate " or " from from " node of node locating, complete communication between acquisition node and
Data-transformation facility；
Multigroup acquisition node is to weave into 14 groups by wireless communication frequency, and an acquisition node is specified in every group
As aggregation node, the acquisition node in every group carries out TWT ranging according to ID sequences between any two, organizes other interior institutes
There is aggregation node to transmit data to aobvious control central station again, aggregation node and aobvious control central station are communicated by specified fixed channel；
Each acquisition node is equipped with one-chip computer module, ultra-wideband antenna B, super wideband wireless in multigroup acquisition node
Module B, signal condition and data acquisition module, wave detector module, FLASH modules, intelligent battery and Voltage stabilizing module B；Microcontroller
Module connects intelligent battery and Voltage stabilizing module B by iic bus, and the super wideband wireless module B of all acquisition nodes has
Communication synchronizes and positions integrated module；Acquisition node is used for the synchronous acquisition of seismic data, transmits order, data and adopts
Collect node location Automatic solution；
Super wideband wireless module B on the acquisition node is received when sending acquisition and acquisition after synchronous acquisition signal
To one-chip computer module, the conditioning of one-chip computer module enabling signal and data collecting module collected signal, each acquisition node are complete for long order
At after acquiring and storing the data to local FLASH modules, the signal of the one-chip computer module feedback collection of aggregation node is to aobvious control
The computer of central station, while signal condition and data acquisition module are switched into standby mode.
All acquisition nodes are arranged according to rectangular grid or trigonal lattice structure.
The order that the host computer of the aobvious control central station is sent when human-computer interaction works includes：Synchronous acquisition, transmission
Data, signal condition and the setting of data acquisition module sample rate, preamplification gain setting, the setting of sampling initial time, each acquisition
The hourage inquiry of Electromagnetic Wave Propagation is ordered between communication path inquiry, each acquisition node between node and aobvious control central station
Enable and acquisition node whether connect, the path that connect, sequence, and for not connected acquisition node terminal with red differentiation
Display.
The aobvious control central station receives each acquisition node and completes after acquiring signal feedback, and backstage is automatic to send transmission data
Order to each acquisition node, each acquisition node by respective aggregation node data transmission to the host computer of aobvious control central station, respectively
Super wideband wireless module B intercepts state to save power consumption in standby after aggregation node completes data transmission.
One-chip computer module in the acquisition node read by iic bus intelligent battery and Voltage stabilizing module B electricity,
Voltage, current information, and the information of intelligent battery and Voltage stabilizing module B is sent to by aggregation node by aobvious control central station, aobvious
Control central station shows the information about power of each acquisition node, realizes and grasps the electricity of battery in real time to charge in time.
The super wideband wireless modules A uses ultra-wide with wirelessly communicating in super wideband wireless module B, synchronous and positioning
Tape pulse position modulation system, pulse width 0.8ns, working frequency are 3.1~10.6GHz, and instant bandwidth 500MHz is divided into
15 channels, 1~64Mbps of traffic rate is adjustable；Between module use TWT system ranging, range accuracy better than ±
1cm, synchronization accuracy are better than 1 μ s.
The super wideband wireless modules A and super wideband wireless module B is single, data according to seismic prospecting data type
The characteristics of amount is big, data transportation requirements high-speed builds communication protocol, and content includes：
(1) is communication objective：Transmit order and data；
(2) orders are divided into：Positioning, synchronous acquisition, transmission data, data are sent completely, and data receiver is completed, acquisition node
In data acquisition module at acquire standby mode, it is standby, show control central station activation, channel distribution；
(3) is put into aobvious control central station near epicenter excitation point, shows control central station and sends preparation for acquiring order, each acquisition section
After point receives the order, the range information of each acquisition node is sent to aobvious control central station by every group of aggregation node；Aobvious control center
After station receives the location information of all acquisition nodes, Location Request is sent one by one to neighbouring acquisition node, and obtains distance letter
All range informations, are then sent to positioning calculation engine, calculate the relative position relation between each acquisition node by breath, and
It is shown in control central station host computer interface, the person of being conveniently operated judges whether calculation result is correct, the opposite position of acquisition node
The relationship of setting is important support parameter necessary to subsequent seismic data process；
(4) communications are master-slave mode, show the super wideband wireless modules A of control central station as communication host, often
The super wideband wireless module B of a acquisition node is used as communication slave, communication host to distribute an ID number with each communication slave,
Communication host controls 14 groups of communication slaves, and the communication slave of all acquisition nodes transmits data to aggregation node successively in order
Communication slave, all data are sent in sequence to aobvious control central station by the communication slaves of 14 groups of aggregation nodes again；
(5) broadcast modes, TX control N number of RX simultaneously, and order is in the way of broadcasting or one-to-many or one-to-one side
Formula is sent.
When the untethered network seismic detector system data storage of the present invention, by the dedicated SEG-2 or SEG-D data of seismic prospecting
Format carries out layout and storage to data.The seismic data stored is shown software by aobvious control central station by seismic prospecting
It is shown on host computer screen, convenient for users to judging the quality of data, preliminary conclusion is obtained by simple data analysis and processing.
The untethered network seismic detector system of the present invention is arranged for seismic acquisition node using array, seismic data
Amount is big, and the features such as needing quasi real time transmission data, and need synchronous and positioning function, self-organizing forms seismic detector private radio
Internet of Things.Wireless internet of things do not use the communication protocol of complicated maturation, to guarantee to complete transmission of seismic data near real-time
It is required that.It is quasi real time meant that, after each big gun gathered data, aobvious control central station is collected all by wireless internet of things
All data can be shown on host computer screen by acquisition node seismic data in 20s.
The untethered network seismic detector system of the present invention can be according to the rectangular grid of setting or three due to system acquisition node
Angular lattice structure arrangement or the arrangement of other topological structures, the distance two-by-two of each acquisition node can pass through TWT principle
Automatically it measures, since the topological relation between node is previously known, the relative position relation between each node may be used smaller
Operand calculates (general commercial notes present processor can be competent at), shows control central station and configures a GPS or Big Dipper positioning
System can calculate the absolute position of each node (see formula (1))
Wherein (xi ref, yi ref, zi ref) be using aobvious control central site it is the acquisition node i of origin under rectangular coordinate system
Coordinate, (xg, yg, zg) it is the aobvious world coordinates for controlling central site, (xi abs, yi abs, zi abs) be acquisition node i world coordinates.
Since radio ranging system bandwidth reaches 500MHz, positioning accuracy reaches 1cm, and the positional precision of final statement is reachable
± 1.0cm meets seismic prospecting application demand.Time-consuming manual measurement is eliminated in this way, although can also be certainly using differential GPS
It is dynamic to measure, but it is the increase in cost, power consumption and the complexity for acquiring node, EMC Design pressure is big.
Host computer, wave detector module, signal condition and data acquisition module in the present invention etc. are all made of ripe product,
Signal condition and data acquisition module, that is, A/D conversion modules in data acquisition module, do not repeat one by one herein.
The use of the untethered seismic detector system of the present invention operates：
1. equipment detects
It needs to be detected its acquisition performance before acquisition node use, for the seismic data accuracy subsequently acquired
It provides safeguard.Operator can send sense command in upper computer end, and equipment is carried out to acquisition node by super wideband wireless modules A
Detection, to detect whether acquisition node works normally, if meet earthquake data acquisition application demand.Detection content includes sensitive
The ratio between degree, natural frequency, damping, the distortion factor, impedance, signal-to-noise ratio, signal and noise+distortion, number of significant digit, total harmonic mistuning,
Spurious-free dynamic range, double-tone intermodulation distortion, multitone intermodulation distortion and battery capacity etc..
2. acquisition node is laid
Survey area, acquisition node quantity, node arrangement mode and spacing are determined according to surveying tasks, according to live earth's surface
Coverage condition lays acquisition node, determines epicenter excitation position.
3. acquisition node location information obtains automatically
After all acquisition nodes are installed in place by construction personnel in appointed place, operating personnel need to be by host computer by institute
There is acquisition node to switch to working condition, i.e., is communicated by super wideband wireless modules A and all acquisition nodes at scene.Upper
It is monitored in the management software of machine after all acquisition node working conditions are in normal network communication state, clicks acquisition node
After position acquisition button, super wideband wireless module B starts TWT distance measurement function two-by-two in system, and range information is passed
Give aobvious control central station end, show the relative position relation between control central station end engine of positioning software Automatic solution acquisition node and
The position of the position and epicenter excitation point of acquisition node is shown on host computer display interface, can be transferred to down after operator's confirmation is errorless
One step works.
4. epicenter excitation and acquisition node synchronous acquisition
After accomplishing fluently shot hole by requirement of engineering and design requirement in the wild, placing explosive (or hammering), blaster (or hammering
Vibroswitch) it is connected by cables to the seismic source trigger of aobvious control central station.After focus triggering, seismic source trigger starts synchronous acquisition
Broadcasting command, each acquisition node gathered data.Each acquisition node after the completion of acquisition in every group will all acquire information by distribution
Channel time sharing transmissions are to aggregation node, and each aggregation node is again using specified channel data transmission to aobvious control central station.
6. aobvious control central station Display Vertices evidence judges and preserves
After all data, which upload, to be completed, operator can send order in upper computer end and seismic data is pressed seismic prospecting
Dedicated record format carries out layout and stores, and is then shown to the operation interface of host computer.Operator may determine that data matter
It measures and preliminary treatment and explanation is carried out to data.
The technical performance and index of this untethered network seismic detector system are as follows：
Time synchronizing method：System broadcasts
Timing tracking accuracy：Less than or equal to 1 μ s
Acquisition node number：2~32678 is arbitrary optional
Sample frequency：100Hz~100KHz is optional
Maximum sampling length：360K points/road
A/D is converted：24
Cross-talk inhibits：>80dB
Frequency response：1Hz~20000Hz
Dynamic range：>130dB
Noise：It is 10 μ V under full range state
Delay：0~9999ms
Signal enhancing function, can be by multiple epicenter excitation by signal enhancing, to improve signal-to-noise ratio
Triggering：External trigger can use blaster, hammering switch triggering, internal trigger to can detect sonic transducer embedding near focus
It is triggered
Power supply mode：Built-in 7.4VDC lithium batteries
Acquisition node power consumption：Power consumption is less than 500mW when maximum rate works, and dormancy power consumption electric current is no more than 30mW
Instrument use environment temperature：- 20~+60 DEG C
Instrument storage temperature：- 40~+80 DEG C
Acquisition node weight：Less than 600g
Acquisition node volume：No more than 80mm × 80mm × 40mm (without the pin for being inserted into soil)
A kind of quasi real time untethered network seismic detector system based on super wideband wireless module of the invention has the beneficial effect that：
1, the wireless communication frequency band of this untethered network seismic detector system uses 3.1~10.6GHz, avoids GSM, WIFI etc.
Hot spot frequency range, the probability that wireless communication, positioning are disturbed is small, in addition, ultra wide band spread spectrum communication system itself has stronger resist
Interference performance；Since signal bandwidth is big, processing gain is high, under the conditions of meeting 1km communication distances, to emitting average power signal
It is required that it is low, it is not more than 10dBmw, therefore wireless communication module is low in energy consumption, is less than 20dBmw.
2, untethered network seismic detector system of the invention can effectively avoid data-signal in transmission process by other circuits
Interference or be limited by the communication of orographic condition and be obstructed, and avoid the signal attenuation loss in transmission process, therefore can be effective
Improve the final acquisition precision and quality for obtaining data.
3, untethered network seismic detector system of the present invention due to the communication protocol for seismic prospecting applied customization it is fairly simple
Practicality, the requirement to one-chip computer module is relatively low, and common 16 microcontrollers can be competent at, it is contemplated that the power consumption of A/D acquisitions is not yet
24 A/D of height, either TI or ADI are less than 10KBPS sample rates, and power consumption is less than 10mw, considers power-efficient, entirely adopts
Collection node, which is fully loaded with power consumption, to be controlled within 500mw, and by power management, stand-by power consumption is less than 30mw, in practical application,
Acquisition node can be 10~30 days with continuous work.
4, of the invention since communication, positioning and synchronizing function share the same hardware, acquisition node is simple in structure；And due to
It is that super wideband wireless simultaneous techniques, synchronization accuracy is used to reach 1 μ s, fully meet seismic prospecting application demand.
5, untethered network seismic detector system using the present invention can pass to collected a large amount of seismic datas in 20s aobvious
Control central station host node and scene show, after facilitating scene to check data acquisition quality and simple process to result of detection into
Row preliminary analysis.
6, acquisition node of the invention uses intelligent power technology, the information such as battery capacity and node power consumption can be sent
Show that the person of being conveniently operated judges the state of instrument to aobvious control central station.
7, biggest advantage of the present invention be operation completely with have cable seismic detector identical, but be omitted bulky cable.This
Acquisition node is also known as digital detector in invention, has cable wave detector slightly larger than traditional, and all few mistake 30% of volume, weight is adopted
Collection node only needs naked eyes to estimate substantially to be not required to manual measurement, operation is more convenient by certain regularly arranged when laying.
Description of the drawings
Fig. 1 is the untethered network seismic detector system structural schematic diagram of the present invention.
Fig. 2 is the aobvious control central station structure diagram of the untethered network seismic detector system of the present invention.
Fig. 3 is the acquisition node structure diagram of the present invention.
Fig. 4 is the acquisition node assembly structure diagram of the present invention.
In above-mentioned figure, 1- circuit boards, 2- holders, 3- intelligent batteries and Voltage stabilizing module B, 4- switch, 5- ultra-wideband antenna B,
6- head covers, 7- wave detector modules, 8- cylinders, 9- bottom covers, 10- pins.
Specific implementation mode
The untethered network seismic detector system of the present invention is illustrated without limitation With reference to embodiment.This skill
The those of ordinary skill in art field can also make the present invention respectively without departing from the spirit and scope of the present invention
Kind change and modification, but all equivalent technical solutions belong to scope of the invention.
Embodiment 1：The present invention provides a kind of quasi real time untethered network seismic detector system based on super wideband wireless module,
Structure is as shown in Figure 1, set there are one aobvious control central station and multigroup acquisition node, and aobvious control central station is as host node, acquisition node
As from node.In one aobvious control central station of survey area arrangement and multigroup acquisition node.The present embodiment is with 224 acquisition nodes
Example.Acquisition node is divided into 14 groups according to communication channel, every group of 16 acquisition nodes, and first acquisition node in every group is configured to
Aggregation node, the acquisition node in every group are arranged according to rectangular lattice structure.
Referring to Fig. 2, control central station is shown by host computer, ultra-wideband antenna A, super wideband wireless modules A, seismic source trigger, intelligence
It can battery and Voltage stabilizing module A compositions.Host computer is made of general notebook, installs power management software in host computer and network is set
The software of standby monitoring function, realizes the power management and network equipment monitoring function of host computer, while host computer has by software
There are the control functions such as the management to on-site terminal equipment (host node and from the auxiliary device of node), parameter setting, data acquisition.
It is connected using USB modes between host computer and super wideband wireless modules A, carries out information exchange；Host computer can show adopt simultaneously
Collect node electricity, receives, stores and show acquisition node data function, collected and storage data fit seismic prospecting
Reference format SEG-2 or SEG-D can be further provided to other mating exclusive data analysis softwares and use.Super wideband wireless
It is connected using serial ports between modules A and seismic source trigger；The voice signal that epicenter excitation generates is converted to electric signal to be transmitted to
Super wideband wireless modules A, triggering collection node synchronous acquisition signal.
Referring to Fig. 3, each acquisition node is equipped with one-chip computer module, ultra-wideband antenna B5, super wideband wireless mould
Block B, signal condition and data acquisition module, wave detector module 7, FLASH modules, intelligent battery and Voltage stabilizing module B3.Acquisition section
The object construction of point is as shown in Figure 4.One-chip computer module, super wideband wireless module B in Fig. 4 in acquisition node, signal condition with
Data acquisition module, FLASH modules are installed along in circuit board 1, signal condition and the A/D converter in data acquisition module
It is not less than 100KBPS analog-to-digital conversion sampling A/D chips using 24.Circuit board 1, intelligent battery and Voltage stabilizing module B3 are mounted on holder 2
Lower section, and integral installation, in cylinder 8, wave detector module 7 is mounted on above cylinder, wave detector module uses moving-coil type technology,
Bottom cover 9 and pin 10 are bolted on 8 lower section of cylinder；It is additionally provided with head cover 6 above cylinder, ultra-wide is installed on head cover 6
Band antenna B5 and switch 4.
The untethered network seismic detector system technical performance and index of the present embodiment are as follows：
Time synchronizing method：System broadcasts
Timing tracking accuracy：Less than or equal to 1 μ s
Sample frequency：100Hz~100KHz is optional
Acquisition node frequency response：10Hz~20KHz
Maximum sampling length：360K points/road
A/D is converted：24
Cross-talk inhibits：>80dB
Dynamic range：>130dB
Noise：It is 10 μ V under full range state
Triggering：External trigger can use blaster or hammering switch triggering
Power supply mode：Built-in 7.4VDC lithium batteries
Instrument use environment temperature：- 20~+60 DEG C
Instrument storage temperature：- 40~+80 DEG C
Acquisition node weight：Less than 600g
Acquisition node power consumption：Power consumption is less than 500mW when maximum rate works, and dormancy power consumption electric current is no more than 30mW
Acquisition node volume：No more than 80mm × 80mm × 40mm (being inserted into soil part without pin)
Embodiment 2：The present invention provides a kind of quasi real time untethered network seismic detector system based on super wideband wireless module,
Structure and the course of work are substantially same as Example 1, if there are one aobvious control central station and multigroup acquisition node, acquisition node according to
Communication channel is divided into 14 groups, and different only every group of the present embodiment has 1000 acquisition nodes, totally 14000 acquisition nodes；Often
First acquisition node in group is configured to aggregation node.In addition sample frequency is 10KHz, and acquisition node frequency response is 1Hz
~1000Hz, triggering mode use blaster mode.
The untethered network seismic detector system energy ad-hoc wireless Internet of Things of the present invention, system bulk is small, light-weight, cost
Low, battery power consumption is low, anti-tampering power is strong, and positioning accuracy and synchronization accuracy are high, on operating experience and have cable seismic detector system phase
Together, the quality that can improve geological prospecting, the progress for accelerating engineering, the labor intensity for reducing field work, are suitable in geology
It is promoted and applied on a large scale in exploration.
Claims (7)
1. a kind of quasi real time untethered network seismic detector system based on super wideband wireless module, if there are one aobvious control central stations and more
Group acquisition node shows control central station as host node, and acquisition node is used as from node；It is characterized in that：
The aobvious control central station is by host computer, ultra-wideband antenna A, super wideband wireless modules A, seismic source trigger, intelligent battery
With Voltage stabilizing module A form, connected using USB modes between host computer and super wideband wireless modules A, super wideband wireless modules A and
It is connected using serial ports between seismic source trigger；Installation power management software and network equipment monitoring in the host computer of aobvious control central station
The software of function, host computer is for human-computer interaction and controls entire untethered network seismic detector system and storage seismic data, management
Intelligent battery is shown with Voltage stabilizing module A, acquisition node position and acquisition node status display；The seismic source trigger is for connecting
Focus is connect, and generates synchronous acquisition signal, all acquisition nodes is made to run simultaneously；The super wideband wireless of the aobvious control central station
Super wideband wireless module B in modules A and each acquisition node after powering can ad-hoc wireless Internet of Things, wireless internet of things exist
It serves as a connection between aobvious control central station and each acquisition node, is responsible for synchronizing each acquisition node, obtains and saved for each acquisition
The information of TWT between " principal and subordinate " of point location or " from from " node, completes the communication between acquisition node and data
Transfer function；
Multigroup acquisition node is to weave into 14 groups by wireless communication frequency, and an acquisition node conduct is specified in every group
Aggregation node, the acquisition node in every group carry out TWT ranging according to ID sequences between any two, organize in other all remittances
Poly- node transmits data to aobvious control central station again, and aggregation node and aobvious control central station are communicated by specified fixed channel；
Each acquisition node is equipped with one-chip computer module, ultra-wideband antenna B, super wideband wireless module in multigroup acquisition node
B, signal condition and data acquisition module, wave detector module, FLASH modules, intelligent battery and Voltage stabilizing module B；One-chip computer module
Connect intelligent battery and Voltage stabilizing module B by iic bus, the super wideband wireless module B of all acquisition nodes be all with communication,
Synchronize and position integrated module；Acquisition node is used for the synchronous acquisition of seismic data, transmission order, data and acquisition node
Position Automatic solution；
Super wideband wireless module B on the acquisition node sends acquisition and long life when acquiring after receiving synchronous acquisition signal
It enables to one-chip computer module, the conditioning of one-chip computer module enabling signal and data collecting module collected signal, each acquisition node completion is adopted
After collecting and storing the data to local FLASH modules, the signal of the one-chip computer module feedback collection of aggregation node gives aobvious control center
The computer stood, while signal condition and data acquisition module are switched into standby mode；
Described is quasi real time meant that, after each big gun gathered data, aobvious control central station is collected by wireless internet of things
All data can be shown on host computer screen by all acquisition node seismic datas in 20s.
2. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：All acquisition nodes are arranged according to rectangular grid or trigonal lattice structure.
3. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：The order that the host computer of the aobvious control central station is sent when human-computer interaction works includes：Synchronous acquisition, transmission number
According to, signal condition and the setting of data acquisition module sample rate, preamplification gain setting, the setting of sampling initial time, each acquisition section
The hourage inquiry of Electromagnetic Wave Propagation is ordered between communication path inquiry, each acquisition node between point and aobvious control central station
Enable and acquisition node whether connect, the path that connect, sequence, and for not connected acquisition node terminal with red differentiation
Display.
4. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：The aobvious control central station receives each acquisition node and completes after acquiring signal feedback, and the automatic transmission data that sends in backstage is ordered
It enables to each acquisition node, each acquisition node is by respective aggregation node data transmission to the host computer of aobvious control central station, each remittance
Super wideband wireless module B intercepts state to save power consumption in standby after poly- node completes data transmission.
5. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：One-chip computer module in the acquisition node reads electricity, the electricity of intelligent battery and Voltage stabilizing module B by iic bus
Pressure, current information, and the information of intelligent battery and Voltage stabilizing module B is sent to by aggregation node by aobvious control central station, in aobvious control
Central station shows the information about power of each acquisition node, realizes and grasps the electricity of battery in real time to charge in time.
6. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：The super wideband wireless modules A uses ultra wide band with wirelessly communicating in super wideband wireless module B, synchronous and positioning
Pulse position modulation system, pulse width 0.8ns, working frequency are 3.1~10.6GHz, and instant bandwidth 500MHz is divided into 15
A channel, 1~64Mbps of traffic rate is adjustable；Between module use TWT system ranging, range accuracy better than ±
1cm, synchronization accuracy are better than 1 μ s.
7. the quasi real time untethered network seismic detector system according to claim 1 based on super wideband wireless module, feature
It is：The super wideband wireless modules A and super wideband wireless module B is single, data volume according to seismic prospecting data type
Greatly, the characteristics of data transportation requirements high-speed, builds communication protocol, and content includes：
(1) is communication objective：Transmit order and data；
(2) orders are divided into：Positioning, synchronous acquisition, transmission data, data are sent completely, and data receiver is completed, in acquisition node
Standby mode is acquired at data acquisition module, it is standby, show control central station activation, channel distribution；
(3) is put into aobvious control central station near epicenter excitation point, shows control central station and sends preparation for acquiring order, each acquisition node connects
After receiving the order, the range information of each acquisition node is sent to aobvious control central station by every group of aggregation node；Aobvious control central station is received
To after the location information of all acquisition nodes, Location Request is sent one by one to neighbouring acquisition node, and obtain range information, so
All range informations are sent to positioning calculation engine afterwards, calculate the relative position relation between each acquisition node, and show
In aobvious control central station host computer interface, the person of being conveniently operated judges whether calculation result is correct, and the relative position of acquisition node is closed
System is important support parameter necessary to subsequent seismic data process；
(4) communications are master-slave mode, show the super wideband wireless modules A of control central station as communication host, each adopt
The super wideband wireless module B for collecting node is used as communication slave, communication host to distribute an ID number, communication with each communication slave
The communication slave of 14 groups of communication slaves of host computer control, all acquisition nodes transmits data to the logical of aggregation node successively in order
All data are sent in sequence to aobvious control central station by the communication slave of believer in a certain religion's machine, 14 groups of aggregation nodes again；
(5) broadcast modes, a TX control N number of RX simultaneously, and order is in the way of broadcast or one-to-many or one-to-one mode is sent out
It send.
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| CN107589444B (en) * | 2017-07-31 | 2020-04-10 | 中国石油天然气集团公司 | Seismic data processing method and device |
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| CN110716229A (en) * | 2019-11-06 | 2020-01-21 | 吉林大学 | Seismic data transmission system based on UWB multi-hop network architecture |
| CN110907986B (en) * | 2019-11-11 | 2022-07-19 | 湖南奥成科技有限公司 | Method and device for acquiring seismic data |
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