CN106802429A - 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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Abstract
The present invention relates to a kind of quasi real time untethered network seismic detector system based on super wideband wireless module, aobvious control central station and multigroup acquisition node are provided with.Aobvious control central station is provided with host computer, super wideband wireless modules A, seismic source trigger, intelligent battery and Voltage stabilizing module A；Acquisition node is provided 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 are compiled, and every group is specified an 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 the wireless Internet of Things of group after the system start, super wideband wireless modules A, B work in 3.1~10.6GHz；The system small in volume, low cost, battery power consumption are low, anti-tampering power strong, and each node relative position can Automatic solution, positioning precision ± 1.0cm, the μ s of synchronization accuracy 1.The system is suitable to the popularization and application in geological prospecting.
Description
Technical field
The present invention relates to a kind of untethered network seismic detector system, concretely relate to one kind and be applied to engineering exploration, with
And the Exploration Domain such as oil, geology, coalfield, artificial or earthquake data can be synchronized with collection, 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 observe seismic signal in earth's surface using instrument, and carries out Treatment Analysis to it, so as 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 part of process.The seismic wave produced by focus during underground propagation, when running into different wave impedance
Stratum when the phenomenons such as reflection, refraction will occur, now received by the wave detector installed on ground, the number of record seismic wave
According to then treatment being analyzed with computer, so as to be inferred to subsurface structure and physical properties of rock, and oil, gas, coal and other ore deposits
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
The functions such as collection, time synchronized, storage and transmission.
At present, the data transfer mode that seismic detector is used 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 three classes：It is blind to adopt
System, half-blindness extraction system and real-time system.
Wired seismic detector that tradition has cable system is firstly because systems bulky and is difficult to carry, and secondly road number is restricted,
The ordered array of 100,000 road ranks is unable to reach, cost is high in addition has had influence on it and applied in actual seismic exploration.Have
Line, the wireless seismic detector for mixing, carry out data acquisition still by the way of wired between wave detector and acquisition station, exist in real time
Property it is poor, the problems such as gathered data error is larger, still there are many inconvenience in seismic prospecting.Also have untethered acquisition system by
Laid according to wired combination, single acquisition station separate records keep time what is be combined using satellite time transfer and local clock
The method of synchronization, does not need cable connection between acquisition station, can be according to the quality of data of different acquisition point during later stage processing data
To determine combination, big combination or small combination can be taken, it is also possible to do not combine, make data processing more convenient, flexible, this
Also seismic data processing technique is enriched, but quality monitoring cannot be carried out because it uses to be locally stored, in actual seismic exploration
It is still inconvenient during middle application.
In the past data were realized because all seismographic acquisition stations of untethered memory-type can not send data to display and control terminal
Real-time quality is controlled, and this is the problem of very bad solution.The real-time quality for not having data is controlled, and cannot at the scene know earthquake
The quality of data acquisition, including excitation energy power, whether acquisition station work 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 substantial amounts of irregular working number to discovery after indoor playback
According to, then carry out mend big gun will take for a large amount of man power and materials.So, the seismographic construction method of untethered memory-type is not also by China
Seismic prospecting circle received.
, there is following point in current untethered seismic detector：
(1) wireless communication frequency bands use 2.4GHz mostly, and the frequency range is commonly used due to WIFI's, easily by co-channel interference；
(2) communications protocol complexity is, it is necessary to operate on the main control device with operating system, it is necessary to main control processor function
Powerful, the shortcoming thus brought is big high cost, power consumption；
(3) lacks positioning function, it is necessary to in-site measurement；Although GPS can be used but low precision, although differential GPS energy
Meet required precision, but high cost, increased the equipment amount of acquisition node；
Either use ICP/IP protocol, or Zigbee protocol wireless sensor network, although with networking work(
Can, but implement more complicated, it is necessary to operating system supports that the requirement to master control hardware is higher；
(5) does not possess synchronizing function, it is necessary to the method synchronization being combined of being kept time using time service and local clock, increased and adopt
Collect the equipment complexity of node, useless data (95% is hash) largely stored in the period that need to do not excited in focus,
Requirement to storing is higher；
(6) the major parts seismographic acquisition node of untethered memory-type in real time can not return to gathered data and working condition
Main control computer, can not receive the control instruction of main control computer, it is impossible to judge the state of on-site data gathering quality and instrument.
To solve above-mentioned problem, 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 have developed untethered telemetric seismic instrument, but its operation maximum average power consumption 4.4W, it is necessary to high capacity cell is supplied
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, the technology is the introducing Wi-Fi wireless communication modules on the basis of untethered seismograph acquisition station, profit
The seismic detector main frame of seismograph acquisition station and status monitoring, notebook computer or PDA are constituted into nothing with Wireless Network
Line LAN, untethered seismic detector working condition wireless monitor is carried out by formulating special communications protocol.It is using central station+wireless
Rerouting station+acquisition station three-level network structure, the seismic instrument system of the multiple analog detectors of each acquisition station connection, but the technology
There are problems that the complicated network structure, equipment be more, network transmission efficiency is low.
The technology positioned using GPS or the Big Dipper is also proposed, such as " the untethered memory-type disclosed in 2015.03.04 China
Shake instrument low-power dissipation power supply management system and management method ", application number：2014107783271, the technology is preset in acquisition station
Low-power dissipation power supply management module, connect single-chip microcomputer, big dipper module, collecting unit, GPS location respectively through on-off circuit by power supply
Unit, method for managing power supply is controlled untethered seismic detector with handheld terminal, the webserver or Big Dipper host computer, and then is solved
To the problem of more seismic detector low power consumption control in large area region, but there is high cost in the technology, increased and adopted with earthquake
The problems such as collecting unrelated equipment amount (such as handheld terminal, the webserver, Big Dipper host computer).
In sum, cost, volume, power consumption, communication modes, and quasi real time collection requirement, as restriction untethered ground
The key factor of shake instrument development.Therefore a kind of necessary synchronization that can realize untethered acquisition system of exploitation, node locating, standard are real
When on-site transfer, low-power consumption and the inexpensive untethered network seismic detector system that passes through self-defined wireless network communication agreement, with gram
The defect of existing instrument and technology is taken, is conducive to the development of extensive earthquake-capturing.
The content of the invention
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 for providing has synchronously and positioning precision is high, flexibility is good,
Can high speed transmission data, quasi real time display data the features such as, also with low cost, lightweight, small volume, it is low in energy consumption the features such as,
The quality that exploration can be improved, the progress for accelerating engineering, the labour intensity for reducing operator, are suitable for popularization and application on a large scale.
To achieve the above object, the present invention is adopted the technical scheme that：A kind of standard based on super wideband wireless module is provided
Real-time untethered network seismic detector system, is provided with aobvious control central station and a multigroup acquisition node, shows control central station as host node,
Acquisition node is used as from node；
Described aobvious control central station is by host computer, ultra-wideband antenna A, super wideband wireless modules A, seismic source trigger, intelligence
Battery is constituted with Voltage stabilizing module A, is connected using USB modes between host computer and super wideband wireless modules A, super wideband wireless module
Connected using serial ports between A and seismic source trigger；Power management software and the network equipment are installed in the host computer of aobvious control central station
The software of monitoring function, host computer is used for man-machine interaction and controls whole untethered network seismic detector system and storage geological data,
Management intelligent battery and Voltage stabilizing module A, acquisition node position display and acquisition node status display；Described seismic source trigger is used
In connection focus, and synchronous acquisition signal is produced, run simultaneously all acquisition nodes；The ultra wide band of described aobvious control central station
Wireless module A after powering can ad-hoc wireless Internet of Things, wireless Internet of Things with the super wideband wireless module B in each acquisition node
Net serves as a connection between aobvious control central station and each acquisition node, is responsible for synchronous each acquisition node, obtains for respectively adopting
Collect the information of the TWT between " principal and subordinate " or " from from " node of node locating, complete communication between acquisition node and
Data-transformation facility；
Described multigroup acquisition node is to weave into 14 groups by wireless communication frequency, and an acquisition node is specified in every group
Used as aggregation node, the acquisition node in every group carries out TWT range finding, other institutes in group according to ID orders between any two
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 provided with one-chip computer module, ultra-wideband antenna B, super wideband wireless in described multigroup acquisition node
Module B, signal condition and data acquisition module, wave detector module, FLASH modules, intelligent battery and Voltage stabilizing module B；Single-chip microcomputer
Module connects intelligent battery and Voltage stabilizing module B by iic bus, and the super wideband wireless module B of all acquisition nodes has
The module of communication, synchronization and positioning integration；Acquisition node is used for the synchronous acquisition of geological data, transmits order, data and adopts
Collection node location Automatic solution；
Super wideband wireless module B on the acquisition node is received when send after synchronous acquisition signal acquisition and collection
Order long is to one-chip computer module, the conditioning of one-chip computer module enabling signal and data collecting module collected signal, and each acquisition node is complete
Into after gathering and store 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 holding state.
All of acquisition node is arranged according to rectangular grid or trigonal lattice structure.
The order that the host computer of described aobvious control central station sends when man-machine interaction works includes：Synchronous acquisition, transmission
Data, signal condition and data acquisition module sample rate are set, preamplification gain is set, sampling initial time is set, each collection
The hourage inquiry life of Electromagnetic Wave Propagation between communication path inquiry, each acquisition node between node and aobvious control central station
Order, and path, the order whether acquisition node connects, connects, and distinguished with red for not connected acquisition node terminal
Display.
After described aobvious control central station receives each acquisition node completion collection signal feedback, backstage sends transmission data automatically
Order to each acquisition node, each acquisition node by respective aggregation node the host computer of data transfer to aobvious control central station, respectively
Super wideband wireless module B intercepts state to save power consumption in standby after aggregation node completes data transfer.
One-chip computer module in described 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 grasping in real time the electricity of battery so as to charging in time.
Radio communication, synchronization and positioning in described super wideband wireless modules A and super wideband wireless module B use ultra-wide
Tape pulse position modulation system, pulse width 0.8ns, working frequency is 3.1~10.6GHz, and instant bandwidth is 500MHz, is divided into
15 channels, 1~64Mbps of traffic rate is adjustable；Between module using TWT system find range, range accuracy better than ±
1cm, synchronization accuracy is better than 1 μ s.
Described super wideband wireless modules A and super wideband wireless module B is according to seismic prospecting data type is single, data
Amount is big, data transportation requirements two-forty the characteristics of build communication protocol, content includes：
(1) is communication objective：Transmission order and data；
(2) orders are divided into：Positioning, synchronous acquisition transmits data, and data is activation is completed, and data receiver is completed, acquisition node
In data acquisition module at gather holding state, 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 collection 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；Xian Kong centers
After station receives the positional information of all acquisition nodes, Location Request is sent one by one to neighbouring acquisition node, and obtain distance letter
All range informations, are then sent to positioning calculation engine by breath, calculate the relative position relation between each acquisition node, and
It is displayed in control central station host computer interface, facilitates operator to judge whether calculation result is correct, the relative position of acquisition node
The relation of putting is important support parameter necessary to follow-up seismic data process；
(4) communications are master-slave mode, show the super wideband wireless modules A of control central station as communication host, often
All as communication slave, communication host distributes one No. ID to the super wideband wireless module B of individual acquisition node with each communication slave,
Communication host controls 14 groups of communication slaves, the communication slave of all acquisition nodes to transmit data to aggregation node successively in order
Communication slave, all data are sent in sequence to aobvious control central station by 14 groups of communication slaves of aggregation node again；
(5) broadcast modes a, TX controls N number of RX simultaneously, and order is in the way of broadcasting or one-to-many or man-to-man side
Formula sends.
During untethered network seismic detector system data storage of the invention, by the special SEG-2 or SEG-D data of seismic prospecting
Form carries out layout and storage to data.The geological data for storing is shown software by aobvious control central station by seismic prospecting
It is displayed on host computer screen, convenient use person judges the quality of data, is analyzed by simple data and treatment draws preliminary conclusion.
Untethered network seismic detector system of the invention, is arranged, geological data for seismic acquisition node using array
The features such as measuring big, it is necessary to quasi real time transmit data, and need synchronous and positioning function, self-organizing forms seismic detector private radio
Internet of Things.Wireless Internet of Things does not use the communication protocol of complicated maturation, to guarantee to complete transmission of seismic data near real-time
It is required that.Quasi real time it is meant that, after each big gun gathered data terminates, shows control central station and collect all of by wireless Internet of Things
Acquisition node geological data, be able to will data show on host computer screen in 20s.
Untethered network seismic detector system of the invention can be according to the rectangular grid or three of setting 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 be by TWT principle
Automatically measure, because the topological relation between node is previously known, the relative position relation between each node can use less
Operand is calculated (be competent at by general commercial notes present processor), is shown control central station and is configured a GPS or Big Dipper positioning
System can just calculate the absolute position (see formula (1)) of each node
Wherein (xi ref, yi ref, zi ref) be with aobvious control central site be 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) it is the world coordinates of acquisition node i.
Because radio ranging system bandwidth reaches 500MHz, positioning precision reaches 1cm, and the positional precision of final statement is reachable
± 1.0cm, meets seismic prospecting application demand.Time-consuming manual measurement is this eliminated, although can also be certainly using differential GPS
Dynamic measurement, but the complexity of cost, power consumption and collection node is the increase in, EMC Design pressure is big.
Host computer, wave detector module, signal condition and data acquisition module in the present invention etc. use ripe product,
Signal condition is A/D modular converters with the data acquisition module in data acquisition module, is not repeated one by one herein.
The operation that uses of untethered seismic detector system of the invention mainly includes：
1. equipment detection
Needed to detect its acquisition performance before acquisition node use, be the geological data accuracy for subsequently being gathered
Provide 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, with detect acquisition node whether normal work, 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,
SFDR, double-tone intermodulation distortion, multitone intermodulation distortion, and battery electric quantity 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 positional information is obtained automatically
After be installed in place for all of acquisition node by appointed place, operating personnel need to be by host computer by institute for workmen
There is acquisition node to switch to working condition, i.e., communicated with all acquisition nodes at scene by super wideband wireless modules A.Upper
Monitored in the management software of machine after all acquisition node working conditions are in normal network communication state, click on 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 relative position relation between control central station end engine of positioning software Automatic solution acquisition node and
The position of acquisition node and the position of epicenter excitation point are 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 collection in every group is all by the information of collection by distribution
, to aggregation node, each aggregation node is again using the channel specified data transfer to aobvious control central station for channel time sharing transmissions.
6. show control central station Display Vertices evidence, judge and preserve
After all data upload completion, operator can send order and geological data is pressed into seismic prospecting in upper computer end
Special record format carries out layout and stores, and is then shown to the operation interface of host computer.Operator may determine that data matter
Measure and preliminary treatment and explanation are carried out to data.
The technical performance of this untethered network seismic detector system is as follows with index：
Time synchronizing method：System broadcasts
Timing tracking accuracy：Less than or equal to 1 μ s
Acquisition node number：2~32678 is any optional
Sample frequency：100Hz~100KHz is optional
Maximum sampling length：360K points/road
A/D is changed：24
Cross-talk suppresses：>80dB
Frequency response：1Hz~20000Hz
Dynamic range：>130dB
Noise：It is 10 μ V under full range state
Time 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, the detectable focus of internal trigger sonic transducer embedding nearby
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 (pin without insertion soil)
A kind of of the invention quasi real time untethered network seismic detector system based on super wideband wireless module has the beneficial effect that：
1st, the wireless communication frequency band of this untethered network seismic detector system uses 3.1~10.6GHz, avoids GSM, WIFI etc.
Focus frequency range, the probability that radio communication, positioning are disturbed is small, in addition, ultra wide band spread spectrum communication system has stronger resisting in itself
Interference performance；Because signal bandwidth is big, processing gain is high, under the conditions of 1km communication distances are met, to transmission signal mean power
It is required that low, no more than 10dBmw, therefore wireless communication module is low in energy consumption, less than 20dBmw.
2nd, untethered network seismic detector system of the invention can be prevented effectively from data-signal and other circuits are received in transmitting procedure
Interference or be limited by the communication of orographic condition and be obstructed, and avoid the signal attenuation in transmitting procedure from being lost, therefore can be effective
Improve the final acquisition precision and quality for obtaining data.
3rd, 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 the single-chip microcomputer of common 16 can be competent, it is contemplated that the power consumption of A/D collections is not yet
Height, either the 24 of TI or ADI A/D, less than 10KBPS sample rates, power consumption is less than 10mw, it is considered to power-efficient, entirely adopts
The fully loaded power consumption of collection node can be controlled within 500mw, by the way that to power management, stand-by power consumption is less than 30mw, in practical application,
Acquisition node can continuously work 10~30 days.
4th, it is of the invention because communication, positioning and synchronizing function share same hardware, acquisition node simple structure；And due to
It is that, using super wideband wireless simultaneous techniques, synchronization accuracy reaches 1 μ s, fully meets seismic prospecting application demand.
5th, a large amount of geological datas for collecting can be passed in 20s using untethered network seismic detector system of the invention aobvious
Control central station host node and scene shows, facilitate scene to enter to result of detection after checking data acquisition quality and simple process
Row initial analysis.
6th, acquisition node of the invention uses intelligent power technology, the information such as battery electric quantity and node power consumption can be sent
Shown to aobvious control central station, facilitate operator to judge the state of instrument.
7th, biggest advantage of the present invention is completely identical with there is cable seismic detector operation, but is omitted the cable of heaviness.This
Acquisition node has cable wave detector slightly larger also known as digital detector than traditional in invention, all few mistake 30% of volume, weight, adopts
Collection node only needs naked eyes to estimate, substantially by certain regularly arranged, to be not required to manual measurement when laying, operate more convenient.
Brief description of the drawings
Fig. 1 is untethered network seismic detector system structural representation of the invention.
Fig. 2 is the aobvious control central station structured flowchart of untethered network seismic detector system of the invention.
Fig. 3 is acquisition node structured flowchart of the invention.
Fig. 4 is acquisition node assembly structure diagram of the invention.
In above-mentioned figure, 1- circuit boards, 2- supports, 3- intelligent batteries and Voltage stabilizing module B, 4- are switched, 5- ultra-wideband antenna B,
6- top covers, 7- wave detector modules, 8- cylinders, 9- bottoms, 10- pins.
Specific embodiment
Untethered network seismic detector system of the invention is illustrated without limitation with reference to specific embodiment.This skill
The those of ordinary skill in art field, without departing from the spirit and scope of the present invention, can also make respectively to the present invention
Plant and change and modifications, but all equivalent technical schemes 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, its
Structure is as shown in figure 1, be provided with aobvious control central station and a multigroup acquisition node, aobvious control central station is used as host node, acquisition node
As from node.In survey area arrangement one aobvious control central station and multigroup acquisition node.The present embodiment is with 224 acquisition nodes
Example.Acquisition node is divided into 14 groups according to communication channel, and every group of 16 acquisition nodes, first acquisition node in every group is configured to
Aggregation node, the acquisition node in every group is arranged according to rectangular lattice structure.
Referring to Fig. 2, show control central station by host computer, ultra-wideband antenna A, super wideband wireless modules A, seismic source trigger, intelligence
Can battery and Voltage stabilizing module A compositions.Host computer is made up of general notebook, installs power management software in host computer and network sets
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 management, parameter setting, data acquisition to on-site terminal equipment (host node and auxiliary device) from node.
Connected using USB modes between host computer and super wideband wireless modules A, carry out information exchange；Host computer can show and adopt simultaneously
Collection node electricity, receives, stores and display acquisition node data function, its collected and storage data fit seismic prospecting
Reference format SEG-2 or SEG-D, can be further provided to other supporting exclusive data analysis softwares and use.Super wideband wireless
Connected using serial ports between modules A and seismic source trigger；The voice signal that epicenter excitation is produced is converted to electric signal to be sent to
Super wideband wireless modules A, triggering collection node synchronous acquisition signal.
Referring to Fig. 3, each described 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.Collection 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 with circuit board 1, the A/D converter in signal condition and 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 arranged on support 2
Lower section, and integral installation is in cylinder 8, wave detector module 7 is arranged on cylinder top, and wave detector module uses moving-coil type technology,
Bottom 9 and pin 10 are bolted on the lower section of cylinder 8；Top cover 6 is additionally provided with above cylinder, ultra-wide is installed on top cover 6
Band antenna B5 and switch 4.
The untethered network seismic detector system technical performance of the present embodiment is as follows with index：
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 changed：24
Cross-talk suppresses：>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 (without pin insertion soil part)
Embodiment 2：The present invention provides a kind of quasi real time untethered network seismic detector system based on super wideband wireless module, its
Structure and the course of work are substantially same as Example 1, are provided with aobvious control central station and a multigroup acquisition node, acquisition node according to
Communication channel is divided into 14 groups, and different simply every group of the present embodiment have 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 uses blaster mode.
Untethered network seismic detector system energy ad-hoc wireless Internet of Things of the invention, system bulk is small, lightweight, cost
Low, battery power consumption is low, anti-tampering power is strong, and positioning precision and synchronization accuracy are high, on operating experience and has cable seismic detector system phase
Together, it is possible to increase the quality of geological prospecting, the progress for accelerating engineering, the labour intensity of reduction field work, it is suitable in geology
Popularization and application 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, is provided with an aobvious control central station and many
Group acquisition node, shows control central station as host node, and acquisition node is used as from node；It is characterized in that：
Described 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 composition, connected using USB modes between host computer and super wideband wireless modules A, super wideband wireless modules A and
Connected using serial ports between seismic source trigger；Power management software and network equipment monitoring are installed in the host computer of aobvious control central station
The software of function, host computer is used for man-machine interaction and controls whole untethered network seismic detector system and storage geological data, management
Intelligent battery and Voltage stabilizing module A, acquisition node position display and acquisition node status display；Described seismic source trigger is used to connect
Focus is connect, and produces synchronous acquisition signal, run simultaneously all acquisition nodes；The super wideband wireless of described 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 exists
Served as a connection between aobvious control central station and each acquisition node, be responsible for synchronous each acquisition node, obtained for each collection section
The information of the TWT between " principal and subordinate " of point location or " from from " node, completes the communication between acquisition node and data
Transfer function；
Described 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 carries out TWT range finding, other all remittances in group according to ID orders between any two
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 provided with one-chip computer module, ultra-wideband antenna B, super wideband wireless module in described 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 have communication,
Synchronous and positioning integration module；Acquisition node is used for the synchronous acquisition of geological data, transmission order, data and acquisition node
Position Automatic solution；
Super wideband wireless module B on the acquisition node sends acquisition with long life when gathering after receiving synchronous acquisition signal
Make to one-chip computer module, the conditioning of one-chip computer module enabling signal and data collecting module collected signal, each acquisition node completes to adopt
After collecting and storing the data to local FLASH modules, the signal of the one-chip computer module feedback collection of aggregation node gives Xian Kong centers
The computer stood, while signal condition and data acquisition module are switched into holding state.
2. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：All of acquisition node is arranged according to rectangular grid or trigonal lattice structure.
3. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：The order that the host computer of described aobvious control central station sends when man-machine interaction works includes：Synchronous acquisition, transmission number
Set according to, signal condition and data acquisition module sample rate, preamplification gain is set, sampling initial time is set, each collection section
The hourage inquiry life of Electromagnetic Wave Propagation between communication path inquiry, each acquisition node between point and aobvious control central station
Order, and path, the order whether acquisition node connects, connects, and distinguished with red for not connected acquisition node terminal
Display.
4. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：After described aobvious control central station receives each acquisition node completion collection signal feedback, backstage sends transmission data life automatically
Make to each acquisition node, each acquisition node, data transfer to the host computer of aobvious control central station, is respectively converged by respective aggregation node
Super wideband wireless module B intercepts state to save power consumption in standby after poly- node completes data transfer.
5. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：One-chip computer module in described 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 grasping in real time the electricity of battery so as to charging in time.
6. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：Radio communication, synchronization and positioning in described super wideband wireless modules A and super wideband wireless module B use ultra wide band
Pulse position modulation system, pulse width 0.8ns, working frequency is 3.1~10.6GHz, and instant bandwidth is 500MHz, is divided into 15
Individual channel, 1~64Mbps of traffic rate is adjustable；Between module using TWT system find range, range accuracy better than ±
1cm, synchronization accuracy is better than 1 μ s.
7. the quasi real time untethered network seismic detector system based on super wideband wireless module according to claim 1, its feature
It is：Described super wideband wireless modules A and super wideband wireless module B is according to seismic prospecting data type is single, data volume
Greatly, communication protocol is built the characteristics of data transportation requirements two-forty, content includes：
(1) is communication objective：Transmission order and data；
(2) orders are divided into：Positioning, synchronous acquisition transmits data, and data is activation is completed, and data receiver is completed, in acquisition node
Holding state is gathered 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, and 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 positional 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, the relative position relation between each acquisition node is calculated, and show
In aobvious control central station host computer interface, operator is facilitated to judge whether calculation result is correct, the relative position of acquisition node is closed
System is important support parameter necessary to follow-up seismic data process；
(4) communications are master-slave mode, show the super wideband wireless modules A of control central station as communication host, and each is adopted
Collect the super wideband wireless module B of node all as communication slave, communication host distributes one No. ID, communication with each communication slave
14 groups of communication slaves of host computer control, the communication slave of 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 believer in a certain religion's machine, 14 groups of communication slaves of aggregation node again；
(5) broadcast modes, a TX are while control N number of RX, order is in the way of broadcast or one-to-many or man-to-man mode is sent out
Send.
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