CN104483700B - Formation fracture is monitored and early warning system and method - Google Patents

Formation fracture is monitored and early warning system and method Download PDF

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Publication number
CN104483700B
CN104483700B CN201410736490.1A CN201410736490A CN104483700B CN 104483700 B CN104483700 B CN 104483700B CN 201410736490 A CN201410736490 A CN 201410736490A CN 104483700 B CN104483700 B CN 104483700B
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module
warning
seismic wave
acceleration
data
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CN104483700A (en
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柴贺军
甘平
孟云伟
黄河
申晓青
李东链
陈卓
张宇
李真真
余欢
于明严
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Chongqing University
China Merchants Chongqing Communications Research and Design Institute Co Ltd
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Chongqing University
China Merchants Chongqing Communications Research and Design Institute Co Ltd
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Abstract

The invention discloses a kind of monitoring of formation fracture and early warning system and method, it is related to technical field of geological exploration, including sensor assembly, wireless communication module, data processing module and positioning warning module;The sensor assembly is made up of multiple MEMS digital acceleration sensors, and the feedback electromotive force that the wireless communication module is used to produce sensor group is transmitted to data processing module;The threshold value of warning for monitoring obtained earthquake shock power and setting is compared backward positioning warning module signal by data processing module by after the data processing of collection, and positioning warning module sends pre-warning signal, points out staff.Beneficial effects of the present invention:The present invention is used and gathered using extensive MEMS digital acceleration sensors and processing data, cost is low, the later stage debugging and maintenance of system are all very convenient, formation fracture situation can be monitored in real time, it is accurately positioned the position of formation fracture and notifies staff to play a part of early warning in time, and monitoring precision is high.

Description

Formation fracture is monitored and early warning system and method
Technical field
The present invention relates to geological exploration techniques, more particularly to a kind of formation fracture monitoring and early warning system and method.
Background technology
In recent years, due to global climate anomalous variation, geological disaster hidden danger is caused also to be continuously increased, in particular with people The aggravation of class activity and the continuous expansion of scope of activities, the geology destruction caused are more and more.The form of geological disaster is main Show that avalanche, landslide, mud-rock flow, geology are collapsed, settled, especially highway causes life of the earth subsidence to people because of formation fracture Life and property cause huge loss.
The monitoring method traditional to geological disaster is mainly the method participated in by mass presdiction and disaster prevention and monitoring personnel scene, existing The defect for having these monitoring methods is:1st, these existing monitoring methods are generally all using artificial operation, and manual record is manually counted The traditional approach of calculation, man power and material's cost input is big, while artificial operation is influenceed greatly by geographical environment, weather, Er Qiecao Personnel's personal safety of work also can not completely be ensured;2nd, because data are artificial taken at regular intervals, this allows for monitoring The collection capacity of data is smaller, Monitoring Data difficulty or ease accurate description, therefore the accuracy of monitoring is relatively low;Artificial gathered data is to prison Survey data progress processing and generally requires longer time, this monitoring result allowed for has certain hysteresis quality and delay Property, thus can not in time, promptly to ground-to-ground matter disaster is monitored and early warning rapidly so that can not effectively act as in advance Defend the function of geological disaster;4th, existing monitoring method can not realize round-the-clock, dynamic monitoring, therefore will occur geology The place of disaster and period may not obtain the prognostic information that early stage occurs for geological disaster in time, so as to can not send pre- in time Police avoids the loss of a large amount of personnel and property.
In summary, it is necessary to a kind of formation fracture monitoring and early warning system and method are provided, monitoring stratum in real time is played Crack situation, and be accurately positioned the position of formation fracture and notify staff to play a part of early warning in time, and possess prison Survey the degree of accuracy high, the low advantage of cost.
The content of the invention
In view of this, the technical problem to be solved in the present invention is that offer one kind is monitored in real time, monitoring precision is high, accurately Positioning, cost and the low formation fracture monitoring of use cost and early warning system and method.
The present invention solves above-mentioned technical problem by following technological means:
The invention provides a kind of monitoring of formation fracture and early warning system, including sensor assembly, wireless communication module, number According to processing module and positioning warning module;
The sensor assembly is made up of multiple MEMS digital detectors, for detecting its residing distributing position MEMS mass Block shift offset, calculate its monitor stratum reflection seismic waves feedback electromotive force, and by described feedback electromotive force transmit to Wireless communication module;
The wireless communication module is used to transmit the feedback electromotive force received to data processing module;
The data processing module is used to record the corresponding geographical position coordinates of each MEMS digital detectors and it connects The feedback electromotive force received, and numerical value conversion is carried out to the feedback electromotive force, further according to the acceleration of MEMS digital detectors inherently Degree weight coefficient and its intrinsic biasing calculate the seismic wave acceleration and seismic wave impulsive force of monitoring point, add while calculating direct wave Speed, back wave acceleration and back wave acceleration, then by the seismic wave impulsive force of monitoring point and the positioning early warning of setting Threshold value is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and Scene is sent to positioning warning module;If the seismic wave impulsive force calculated is sent less than threshold value of warning to warning module Keep green safety indicator lamp display command;
The positioning warning module is used to send pre-warning signal according to the trigger signal received.
Further, the data processing module include data acquisition module, acquisition control module, data fusion module, Memory module and three-dimensional formation inverting module;
The seismic data that collection sensor is detected is converted into electromotive force by the data acquisition module;
The acquisition control module passes through acquisition control agreement coordination data acquisition module and data fusion module;
The fusion process of the multiple MEMS digital detectors gathered datas of the data fusion module feature based layer;It is described to deposit Store up the seismic wave electromotive force data after the corresponding geographical coordinate of module stored record MEMS digital detectors and data fusion;
The seismic wave stored in memory module is fed back electromotive force data and carries out numerical value turn by the three-dimensional formation inverting module Change, the geographical position according to residing for seismic wave acceleration combination digital detector calculates X, Y, Z points of seismic wave acceleration Amount and seismic wave impulsive force, and three-dimensional formation profile is depicted, then by the seismic wave impulsive force of monitoring point and determining for setting Position threshold value of warning is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends triggering letter to warning module Number, and scene is sent to positioning warning module;If the seismic wave impulsive force calculated is less than threshold value of warning to early warning mould Block, which is sent, keeps green safety indicator lamp display command.
Further, the three-dimensional formation inverting module is according to residing for the seismic wave acceleration combination digital detector Reason position calculates seismic wave acceleration X, Y, Z component and seismic wave impulsive force step and is:S401. many digital detectors are relative Horizontal distribution, digital detector road spacing is D, and horizontal azimuth is α, and digital detector is output as Vout, then
In formula (1):It is the acceleration of vibration signal, K1 is acceleration scale factor, and K0 is bias;S402. digital detection The three-component of device measurement is denoted asHorizontal azimuth is α, i.e. componentWithAngle be α, then it is corresponding Right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
S403. resultant acceleration is setAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, i.e., It can obtain seismic wave acceleration X, Y, Z three-component
S404. when digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,It is mass relative to zero point Relative displacement.Formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained into digital detector direction of principal axis to rectangular co-ordinate XYZ equation:
Simultaneous Equations can be obtained:
(15) result that, formula (15) is calculated is the seismic wave impulsive force F's of monitoring Value.
Further, the control process for the acquisition control agreement that the acquisition control module is used for:PC is sent out to FPGA Send data acquisition command;FPGA receives the acquisition of PC transmission;FPGA sends response command to PC;FPGA starts to adopt Collect data, FPGA sends the full signal of data acquisition to PC after data acquisition completely;PC receives the full data of FPGA collections, knot Beam data acquisition.
The present invention also provides a kind of formation fracture monitoring and method for early warning, using the monitoring of above-mentioned formation fracture and early warning system System, method specifically includes following steps:
S1:It is determined that determining monitoring point distribution and particular location in monitoring region, the monitoring territorial scope that device is determined;
S2:Particular location in the monitoring point of the determination installs each and every one many MEMS digital detectors, and digital detector is used In detection its distributing position MEMS mass shift offsets, calculate it and monitor stratum reflection seismic waves feedback electromotive force, And transmit described feedback electromotive force to wireless communication module;
S3:The wireless communication module is by the electromotive force data transfer received to data processing module;
S4:The data processing module records the corresponding geographical position coordinates of each MEMS digital detectors and its reception The feedback electromotive force arrived, and numerical value conversion is carried out to the feedback electromotive force, further according to the acceleration of MEMS digital detectors inherently Degree weight coefficient and its intrinsic biasing calculate the seismic wave acceleration and seismic wave impulsive force of monitoring point, add while calculating direct wave Speed, back wave acceleration and back wave acceleration, then by the seismic wave impulsive force of monitoring point and the positioning early warning of setting Threshold value is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and Scene is sent to positioning warning module;If the seismic wave impulsive force calculated is sent less than threshold value of warning to warning module Keep green safety indicator lamp display command;
S5:Warning module sends pre-warning signal according to the trigger signal received.
Further, the data processing module include data acquisition module, acquisition control module, data fusion module, Memory module and three-dimensional formation inverting module;
The seismic data that collection sensor is detected is converted into electromotive force by the data acquisition module;
The acquisition control module passes through acquisition control agreement coordination data acquisition module and data fusion module;
The fusion process of the multiple MEMS digital detectors gathered datas of the data fusion module feature based layer;
Seismic wave after the corresponding geographical coordinate of the memory module stored record MEMS digital detectors and data fusion Electromotive force data;
The seismic wave stored in memory module is fed back electromotive force data and carries out numerical value turn by the three-dimensional formation inverting module Change, the geographical position according to residing for seismic wave acceleration combination digital detector calculates X, Y, Z points of seismic wave acceleration Amount and seismic wave impulsive force, and three-dimensional formation profile is depicted, then by the seismic wave impulsive force of monitoring point and determining for setting Position threshold value of warning is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends triggering letter to warning module Number, and scene is sent to positioning warning module;If the seismic wave impulsive force calculated is less than threshold value of warning to early warning mould Block, which is sent, keeps green safety indicator lamp display command.
Further, the three-dimensional formation inverting module is according to residing for the seismic wave acceleration combination digital detector Reason position calculates seismic wave acceleration X, Y, Z component and seismic wave impulsive force step and is:
S401. digital detector relative level is distributed, and digital detector road spacing is D, and horizontal azimuth is α, numeral inspection Ripple device is output as Vout, then
In formula (1):It is the acceleration of vibration signal, K1 is acceleration scale factor, and K0 is bias;
S402. the three-component of digital detector measurement is denoted asHorizontal azimuth is α, i.e. componentWithAngle be α, then corresponding right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
S403. resultant acceleration is setAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, i.e., It can obtain seismic wave acceleration X, Y, Z three-component
S404. when digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,It is mass relative to zero The relative displacement of point.Formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained digital detector direction of principal axis and be sat to right angle Mark XYZ equation:
Simultaneous Equations can be obtained:
(15) result that, formula (15) is calculated is the seismic wave impulsive force F's of monitoring Value.
Further, the control process for the acquisition control agreement that the acquisition control module is used for:
PC sends data acquisition command to FPGA;
FPGA receives the acquisition of PC transmission;
FPGA sends response command to PC;
FPGA starts gathered data, and FPGA sends the full signal of data acquisition to PC after data acquisition completely;
PC receives the full data of FPGA collections, terminates data acquisition command.
Beneficial effects of the present invention:(1) formation fracture of the invention is monitored includes sensor assembly with early warning system, wireless Communication module, data processing module and positioning warning module;The sensor assembly is made up of multiple MEMS digital detectors, institute Stating wireless communication module is used to transmit the feedback electromotive force received to data processing module;The data processing module is used for The corresponding geographical position coordinates of each MEMS digital detectors and its feedback electromotive force received are recorded, further according to MEMS numbers The intrinsic acceleration weight coefficient of word wave detector and its intrinsic biasing calculate seismic wave acceleration and the earthquake wave impact of monitoring point Power, while direct wave acceleration, back wave acceleration and back wave acceleration are calculated, then by the earthquake wave impact of monitoring point Power is compared with the positioning threshold value of warning set, when the seismic wave impulsive force calculated is more than or equal to threshold value of warning to early warning mould Block sends trigger signal, and scene is sent into positioning warning module, and positioning warning module sends pre-warning signal, points out work Make personnel.The present invention is used and gathered using extensive MEMS digital detectors and processing data, therefore use cost is low, system Later stage debugs and safeguarded all very convenient.
(2) formation fracture of the invention monitoring sets multiple monitoring points with early warning system in monitored area, in each prison Measuring point installs MEMS digital detectors, and the data volume for monitoring the system is big, therefore monitoring precision is high.
(3) formation fracture monitoring of the present invention realizes real-time monitoring with early warning system and method, and according to the ground collected Seismic wave acceleration calculates seismic wave acceleration X, Y, Z component and seismic wave impulsive force, and component of acceleration is directed into three Stratum inverting module is tieed up, earth formation reconstruct is carried out, three-dimensional formation profile is depicted, realization is accurately positioned formation fracture, carried The high degree of accuracy of monitoring.
(4) formation fracture of the present invention monitoring uses radio communication with early warning system and method, it is to avoid heavy cable and The distribution of complicated cable, and Data fusion technique is used, the redundancy issue of data is solved, internal memory is saved.
(5) entirely data monitoring, processing and early warning are all in formation fracture of the invention monitoring and early warning system and method Intellectuality, without manual record and calculating, the professional skill and competency profiling to operating personnel are relatively low, therefore the monitoring and early warning System is applicable to remote districts and the place of shortage of professionals, is conducive to popularization and application.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the invention;
Fig. 2 is digital detector scheme of installation of the invention;
The three-component schematic diagram that Fig. 3 measures for the digital detector of the present invention;
Fig. 4 is acquisition control agreement flow chart of the invention.
Embodiment
Below with reference to accompanying drawing, the present invention is described in detail, as shown in Figure 1:
Formation fracture monitoring and the early warning system of the present invention includes sensor assembly, wireless communication module, data processing mould Block and positioning warning module, the sensor assembly are made up of multiple MEMS digital detectors, for detecting its residing distribution position MEMS mass shift offsets are put, it is calculated and monitors stratum reflection seismic waves feedback electromotive force, and described feedback is electric Kinetic potential is transmitted to wireless communication module;The wireless communication module is used to transmit the feedback electromotive force received to data processing Module;The data processing module is used to record the corresponding geographical position coordinates of each MEMS digital detectors and it is received Feedback electromotive force, and by it is described feedback electromotive force carry out numerical value conversion, be converted into corresponding electromotive force, further according to MEMS numeral The intrinsic acceleration weight coefficient of wave detector and its intrinsic biasing calculate the seismic wave acceleration and seismic wave impulsive force of monitoring point, Direct wave acceleration, back wave acceleration and back wave acceleration are calculated simultaneously, and the seismic wave punching detected is then judged again The positioning threshold value of warning whether power meets setting is hit, trigger signal and stratum inversion chart are sent to positioning warning module if meeting Picture, will be lighted at formation fracture coordinate;The positioning warning module is used to send early warning according to the trigger signal received Signal.Sensor assembly, wireless communication module, message processing module and positioning warning module are sequentially connected with.
Message processing module includes data acquisition module, acquisition control module, data fusion module, memory module and three-dimensional Stratum inverting module, data acquisition module is used to seismic data being converted into electromotive force;Acquisition control module is used to coordinate number According to acquisition module and data fusion module, the loss of data can be avoided, omitted;The many MEMS numbers of data fusion module feature based layer The fusion process of word wave detector gathered data, reduces the redundancy of seismic data, saves the expense of memory cell;Store mould The seismic wave electromotive force data that block is used for after the corresponding geographical coordinate of stored record MEMS digital detectors and data fusion;It is three-dimensional Inverting module in stratum is used to carry out numerical value conversion to seismic data and calculates component of acceleration and seismic wave impulsive force, and retouches Draw three-dimensional formation profile.Data acquisition module, acquisition control module, data fusion module, memory module and three-dimensional formation Inverting module is sequentially connected with.
Sensor assembly gathers the seismic data of monitoring point using 4 MEMS digital detectors horizontal distributions in real time, when When the stratum of monitoring point changes, MEMS digital detectors monitor electromotive force variable quantity caused by the reflection seismic waves of stratum, The electromotive force variable quantity is transmitted to data processing module by wireless communication unit, data processing module changes the electromotive force Amount is converted into seismic wave acceleration, and the geographical position being distributed according to acceleration combination sensor calculates and obtains correspondence X-component, Y-component, Z component and seismic wave impulsive force.Component of acceleration is directed into three-dimensional formation inverting module, stratum knot is carried out Structure is reconstructed.By judging whether seismic wave impulsive force meets the positioning threshold value of warning of setting, meet then to positioning warning module hair Go out the earth formation graphics of trigger signal and reconstruct, positioning warning module is according to the starting signal and earth formation received Figure, sends pre-warning signal and shows the geographical coordinate in crack.
Acquisition control module is gathered for data processing module control data, and data processing module is by FPGA and its periphery electricity Realize on road.The specific work process of data processing module:PC sends data acquisition command to FPGA;FPGA receives PC transmissions Acquisition;FPGA sends response command to PC;FPGA starts gathered data, and FPGA sends number to PC after data acquisition completely According to the signal that collection is full;PC receives FPGA gathered datas, terminates data acquisition command.
Data fusion module carries out data fusion using the method for characteristic layer fuzzy clustering, reduces seismic wave electromotive force number According to redundancy, save the expense of memory cell.Feature-level fusion is that the observation extracting data provided from each sensor has generation The feature of table, these Fusion Features are known method for distinguishing and handled into single characteristic vector, then application mode.Based on mould Paste the data fusion of cluster:The essence of cluster is that the sample cluster represented with one group of parameter is divided according to certain specific standard The process of class.The process of fuzzy clustering is exactly to sample number according to a certain similarity measurement, difference test and stopping rule The process that characteristic parameter in is classified, the different cluster algorithm of different rule correspondences.Feature based layer is fuzzy The data fusion of cluster be by the representative feature of the extracting data for collecting sensor, by these features according to Characteristic parameter is carried out fusion for classification by a kind of similarity measurement, difference test etc., and the same section of data is removed, and retains complementary Characteristic, reduce and detect the redundancies of seismic wave electromotive force data, save memory space, improve the fortune of data processing module Scanning frequency degree.
The seismic wave that memory module is used for after the corresponding geographical coordinate of stored record MEMS digital detectors and data fusion Electromotive force data, to be supplied to three-dimensional formation inverting module to provide data supporting.
Three-dimensional formation inverting module is X points that system conversion and seismic wave acceleration are carried out to seismic data Amount, Y-component, Z component are calculated and seismic wave impact force's calculation, and depict three-dimensional formation profile.According to above-mentioned 4 MEMS numbers The seismic wave acceleration that word wave detector is detected, and combine sensor be distributed geographical position calculate obtain correspondence X-component, Y-component, Z component and seismic wave impulsive force process are:As shown in Fig. 24 MEMS digital detectors relative level distributions, number Word wave detector road spacing is D, and horizontal azimuth is α, and digital detector is output as Vout, then
In formula (1):It is the acceleration of vibration signal, unit is g;K1 is acceleration scale factor, and unit is g/V;K0 It is bias, unit is g.
As shown in figure 3, the three-component of digital detector measurement is denoted asHorizontal azimuth is α, i.e. componentWithAngle be α, then corresponding right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
Set resultant accelerationAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, i.e., It can obtain seismic wave acceleration X, Y, Z three-component
When digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,It is mass relative to zero The relative displacement of point.Formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained digital detector direction of principal axis and be sat to right angle Mark XYZ equation:
Simultaneous Equations can be obtained:
The result that formula (15) is then calculated is the size of the seismic wave impulsive force F of monitoring value.
Three-dimensional formation inverting module calculates seismic wave impact force vector by calculating each acceleration of per pass wave detector F is measured, the cross correlation between seismic wave impulsive force is detected using per pass wave detector, is finally inversed by the profile on detected stratum. Formation fracture danger threshold value F is set by Seismic DataW, as F >=FW, three-dimensional formation inverting module to positioning warning module send Trigger signal and location information;As F < FW, three-dimensional formation inverting module is sent to positioning warning module keeps green safety to indicate Lamp display command.
Present invention additionally comprises a kind of monitoring of formation fracture and the method for early warning, following steps are specifically included:
S1:It is determined that determining monitoring point distribution and particular location in monitoring region, the monitoring territorial scope that device is determined;
S2:Particular location in the monitoring point of the determination installs 4 MEMS digital detectors, and digital detector is used to examine Its distributing position MEMS mass shift offsets are surveyed, it is calculated and monitors stratum reflection seismic waves feedback electromotive force, and will Described feedback electromotive force is transmitted to wireless communication module;
S3:The wireless communication module is by the electromotive force data transfer received to data processing module;
S4:Data processing module accurately records each MEMS digital detectors correspondence by acquisition protocols and dual-cache mechanism Geographical position coordinates and its receive feedback electromotive force, by data fusion module to electromotive force Data Fusion transmit Stored into memory module;
S5:The seismic wave stored in memory module is fed back electromotive force data and carries out numerical value turn by three-dimensional formation inverting module Change, the geographical position according to residing for seismic wave acceleration combination digital detector calculates X, Y, Z component and earthquake wave impact Power, and three-dimensional formation profile is depicted, the seismic wave impulsive force calculated and the threshold value of warning of setting are compared, if meter The seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and scene is sent into given Position warning module;If the seismic wave impulsive force calculated is less than threshold value of warning sends holding green safety indicator lamp to warning module Display command;
S6:Positioning warning module sends pre-warning signal according to the trigger signal received.
As shown in figure 4, the control process of the acquisition protocols of acquisition control module is:PC sends data acquisition life to FPGA Order;FPGA receives the acquisition of PC transmission;FPGA sends response command to PC;FPGA starts gathered data, data FPGA sends the full signal of data acquisition to PC after collection is full;PC receives FPGA gathered datas, terminates data acquisition life Order.
Three-dimensional formation inverting module is that system A/D conversions and component calculating and stratigraphic separation meter are carried out to seismic signal Calculate, and depict three-dimensional formation profile.The seismic wave acceleration detected according to above-mentioned 4 MEMS digital detectors, And the geographical position calculating that combination sensor is distributed obtains correspondence X-component, Y-component, Z component and seismic wave impulsive force process For:As shown in Fig. 24 MEMS digital detectors relative level distributions, wave detector road spacing is D, and horizontal azimuth is α, detection Device is output as Vout, then
In formula (1):It is the acceleration of vibration signal, unit is g;K1 is acceleration scale factor, and unit is g/V;K0 It is bias, unit is g.
As shown in figure 3, the three-component of digital detector measurement is denoted asHorizontal azimuth is α, i.e. componentWithAngle be α, then corresponding right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
Set resultant accelerationAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, i.e., It can obtain seismic wave acceleration X, Y, Z three-component
S404. when digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,It is mass relative to zero The relative displacement of point.Formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained digital detector direction of principal axis and be sat to right angle Mark XYZ equation:
Simultaneous Equations can be obtained:
(15), formula (15) is then the size of the seismic wave impulsive force F of monitoring value.
Three-dimensional formation inverting module calculates seismic wave impact force vector by calculating each acceleration of per pass wave detector F is measured, the cross correlation between seismic wave impulsive force is detected using per pass wave detector, is finally inversed by the profile on detected stratum. Formation fracture danger threshold value F is set by Seismic DataW, as F >=FW, three-dimensional formation inverting module to positioning warning module send Trigger signal and location information;As F < FW, three-dimensional formation inverting module is sent to positioning warning module keeps green safety to indicate Lamp display command.
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to skill of the invention Art scheme is modified or equivalent substitution, and without departing from the objective and scope of technical solution of the present invention, it all should cover at this Among the right of invention.

Claims (6)

1. formation fracture is monitored and early warning system, it is characterised in that:Including sensor assembly, wireless communication module, data processing Module and positioning warning module;
The sensor assembly is made up of multiple MEMS digital acceleration sensors, for detecting its residing distributing position MEMS matter Gauge block shift offset, calculates it and monitors stratum reflection seismic waves feedback electromotive force, and described feedback electromotive force is passed through Wireless communication module is transmitted;
The feedback electromotive force that the wireless communication module is used to produce sensor group is transmitted to data processing module;
The data processing module be used for record the corresponding geographical position coordinates of each MEMS digital acceleration sensors and its The feedback electromotive force received, and numerical value conversion is carried out to the feedback electromotive force, further according to MEMS digital acceleration sensors Intrinsic acceleration weight coefficient and its intrinsic biasing calculate the seismic wave acceleration and seismic wave impulsive force of monitoring point, count simultaneously Seismic wave acceleration X, Y, Z component are calculated, is then compared the seismic wave impulsive force of monitoring point and the positioning threshold value of warning of setting Compared with, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and by scene It is sent to positioning warning module;If the seismic wave impulsive force calculated is less than threshold value of warning sends holding green peace to warning module Full indicator lamp display command;
The positioning warning module is used to send pre-warning signal according to the trigger signal received,
The data processing module includes data acquisition module, acquisition control module, data fusion module, memory module and three-dimensional Stratum inverting module;
The data acquisition module will gather the seismic signal progress A/D conversion operations that sensor is detected;
The acquisition control module is run by acquisition control agreement coordination data acquisition module and data fusion module;
The fusion process of the multiple MEMS digital acceleration sensors gathered datas of the data fusion module feature based layer;It is described Seismic wave electromotive force data after the corresponding geographical coordinate of memory module stored record MEMS digital detectors and data fusion;
The seismic wave stored in memory module is fed back electromotive force data and carries out numerical value conversion, root by the three-dimensional formation inverting module X, Y, Z component and the ground of seismic wave acceleration are calculated according to geographical position residing for seismic wave acceleration combination digital detector Seismic shock power, and three-dimensional formation profile is depicted, then by the seismic wave impulsive force of monitoring point and the positioning early warning of setting Threshold value is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and Scene is sent to positioning warning module;If the seismic wave impulsive force calculated is sent less than threshold value of warning to warning module Keep green safety indicator lamp display command.
2. formation fracture monitoring as claimed in claim 1 and early warning system, it is characterised in that:The three-dimensional formation inverting module root Seismic wave acceleration X, Y, Z component and earthquake are calculated according to geographical position residing for seismic wave acceleration combination digital detector Wave impact power step is:
S401. many digital detector relative level distributions, digital detector road spacing is D, and horizontal azimuth is α, numeral inspection Ripple device is output as Vout, then
In formula (1):It is the acceleration of vibration signal, K1 is acceleration scale factor, and K0 is bias;
S402. the three-component of digital detector measurement is denoted asHorizontal azimuth is α, i.e. componentWith's Angle is α, then corresponding right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
S403. resultant acceleration is setAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, you can To seismic wave acceleration X, Y, Z three-component
S404. when digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,Phase for mass relative to zero point To displacement, formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained into digital detector direction of principal axis to rectangular co-ordinate XYZ Equation:
Simultaneous Equations can be obtained:
The result that formula (15) is calculated is the seismic wave impulsive force F monitored value.
3. formation fracture monitoring as claimed in claim 1 and early warning system, it is characterised in that:What the acquisition control module was used The control process of acquisition control agreement is:PC sends data acquisition command to FPGA;FPGA receives the collection of PC transmission Order;FPGA sends response command to PC;FPGA starts gathered data, and FPGA sends data to PC and adopted after data acquisition completely The signal being filled with;PC receives the full data of FPGA collections, terminates data acquisition command.
4. a kind of formation fracture monitoring and method for early warning, it is characterised in that:Monitored using formation fracture as claimed in claim 1 With early warning system, following steps are specifically included:
S1:It is determined that determining monitoring point distribution and particular location in monitoring region, the monitoring territorial scope that device is determined;
S2:Particular location in the monitoring point of the determination installs multiple MEMS digital detectors, and digital detector is used to detect Its distributing position MEMS mass shift offsets, calculate its and monitor stratum reflection seismic waves feedback electromotive force, and by institute The feedback electromotive force stated is transmitted to wireless communication module;
S3:The wireless communication module is by the electromotive force data transfer received to data processing module;
S4:The data processing module records each MEMS digital detectors corresponding geographical position coordinates and it is received Electromotive force is fed back, and numerical value conversion is carried out to the feedback electromotive force, is weighed further according to the intrinsic acceleration of MEMS digital detectors Coefficient and its intrinsic biasing calculate the seismic wave acceleration and seismic wave impulsive force of monitoring point, while calculating seismic wave acceleration The seismic wave impulsive force of monitoring point and the positioning threshold value of warning of setting, are then compared, if the ground calculated by X, Y, Z component Seismic shock power is more than or equal to threshold value of warning and sends trigger signal to warning module, and scene is sent into positioning early warning mould Block;If the seismic wave impulsive force calculated is less than threshold value of warning sends holding green safety indicator lamp display life to warning module Order;
S5:Warning module sends pre-warning signal according to the trigger signal received,
The data processing module includes data acquisition module, acquisition control module, data fusion module, memory module and three-dimensional Stratum inverting module;
The data acquisition module will gather the seismic signal progress A/D conversion operations that sensor is detected;
The acquisition control module is run by acquisition control agreement coordination data acquisition module and data fusion module;The number According to the fusion process of the multiple MEMS digital detectors gathered datas of Fusion Module feature based layer;
Seismic wave after the corresponding geographical coordinate of the memory module stored record MEMS digital detectors and data fusion is electronic Gesture data;
The seismic wave stored in memory module is fed back electromotive force data and carries out numerical value conversion, root by the three-dimensional formation inverting module X, Y, Z component and the ground of seismic wave acceleration are calculated according to geographical position residing for seismic wave acceleration combination digital detector Seismic shock power, and three-dimensional formation profile is depicted, then by the seismic wave impulsive force of monitoring point and the positioning early warning of setting Threshold value is compared, if the seismic wave impulsive force calculated is more than or equal to threshold value of warning and sends trigger signal to warning module, and Scene is sent to positioning warning module;If the seismic wave impulsive force calculated is sent less than threshold value of warning to warning module Keep green safety indicator lamp display command.
5. the method for formation fracture monitoring as claimed in claim 4 and early warning, it is characterised in that:The three-dimensional formation inverting mould Root tuber according to geographical position residing for seismic wave acceleration combination digital detector calculate seismic wave acceleration X, Y, Z component and Seismic wave impulsive force step is:
S401. many digital detector relative level distributions, digital detector road spacing is D, and horizontal azimuth is α, numeral inspection Ripple device is output as Vout, then
In formula (1):It is the acceleration of vibration signal, K1 is acceleration scale factor, and K0 is bias;
S402. the three-component of digital detector measurement is denoted asHorizontal azimuth is α, i.e. componentWith's Angle is α, then corresponding right angle OUVW coordinate systems are
Rectangular co-ordinate OUVW is into standard coordinate XYZ
Formula (3) is the relation between the rectangular co-ordinate OUVW and standard rectangular coordinate system XYZ that digital detector is constituted;
S403. resultant acceleration is setAngle with plane OUV is β, so as to
Formula (4), (5) and (6), which is substituted into formula (3), can calculate each acceleration in standard OXYZ coordinate systems, you can To seismic wave acceleration X, Y, Z three-component
S404. when digital detector responds extraneous seismic wave, mass A is by an external forceThen have
In formula (10), (11), (12), λ, η, μ are the weight coefficient of XYZ axles,Phase for mass relative to zero point To displacement, formula (7), (8) and (9) substitution formula (10), (11), (12) can be obtained into digital detector direction of principal axis to rectangular co-ordinate XYZ Equation:
Simultaneous Equations can be obtained:
The result of calculation of formula (15) is the seismic wave impulsive force F monitored value.
6. formation fracture monitoring as claimed in claim 4 and method for early warning, it is characterised in that:The acquisition control module is used The control process of acquisition control agreement be:PC sends data acquisition command to FPGA;FPGA receives adopting for PC transmission Collection order;FPGA sends response command to PC;FPGA starts gathered data, and FPGA sends data to PC after data acquisition completely The full signal of collection;PC receives the full data of FPGA collections, terminates data acquisition command.
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