WO2017056283A1

WO2017056283A1 - Exploration machine system and management method

Info

Publication number: WO2017056283A1
Application number: PCT/JP2015/077892
Authority: WO
Inventors: 真生濱本; 上村　哲也
Original assignee: 株式会社日立製作所
Priority date: 2015-09-30
Filing date: 2015-09-30
Publication date: 2017-04-06
Also published as: JPWO2017056283A1; JP6311075B2

Abstract

The present invention has: an epicenter management unit for transmitting signals to, and receiving signals from, a source controller for controlling an artificial epicenter; a plurality of sensor terminals for managing sensors for receiving reflected waves in accordance with a sampling timing period and generating vibration data; and a management device for managing the epicenter management unit and each of the sensor terminals. During a measurement phase, the epicenter management unit acquires, as first timing characteristics information, information that includes: the output timing of vibration trigger signals being outputted to the source controller among signals to be received and transmitted; and the reception timing of a vibration-start-timing signal subsequently outputted from the source controller. The management device assesses vibration characteristics of the artificial epicenter on the basis of the first timing characteristics information, calculates second timing characteristics information in accordance with the assessment results, configures the epicenter management unit with the second timing characteristics information, calculates the timing adjustment amount used in order to adjust the sampling timing for each of sensor terminals relative to the sensors, and configures each of the sensor terminals with the timing adjustment amount. During an operation phase, the epicenter management unit calculates the timing adjustment amount used in order to adjust the output timing of the vibration trigger signal on the basis of the second timing characteristics information configured from the management device.

Description

Exploration machine system and management method

The present invention relates to an exploration machine system and a management method for acquiring data by reflection seismic exploration.

As a method of exploring underground resources such as oil, gas, and minerals, there is a reflection seismic survey. In seismic reflection surveys, artificial vibration is generated using an artificial source called dynamite or a shaker, and the vibration component reflected from the underground stratum is received by the sensor, and the received vibration data. It is an exploration technique to predict the underground structure by analyzing Here, a system that acquires seismic waves generated by an artificial seismic source as data is called an exploration machine system.

There are two types of exploration system: a cable type system and a cableless type system. A cable type system is a system in which a plurality of sensors are connected to one cable, and seismic waves received by the sensors are carried in real time to a vehicle called an observation vehicle via the cable. The carried data is stored in the management system inside the observation vehicle. On the other hand, in a cableless type system, a sensor terminal having a storage connected to a sensor is installed on the ground surface, and seismic wave data received by the sensor is stored. The sensor terminal is collected after the exploration is completed, and the sensor terminal data is stored in the management system.

Currently, the exploration system mainly used in the seismic reflection survey is a cable type system. However, in recent years, along with an increasing trend in the number of installed sensors, an increase in work cost for cable installation of a cable type system has become a problem. Against this background, there is a growing demand for cableless systems that do not require cable installation work.

In reflection seismic exploration, reflected wave data is handled with the oscillation start timing of the artificial seismic source as the reference time zero seconds. In the cable type system, the artificial seismic source and the observation vehicle communicate wirelessly, and the observation vehicle can notify the sensor of the oscillation start timing of the artificial seismic source. Therefore, the sensor can start sampling using the oscillation start timing as a trigger, and the sampling timing of the sensor coincides with the oscillation start timing of the artificial seismic source. On the other hand, in a cableless system, there is no way for the sensor terminal to reliably know the oscillation start timing in real time, so the sensor sampling timing does not match the oscillation start timing of the artificial seismic source, In the meantime, a deviation time less than the sampling period of the sensor occurs. This deviation time affects the prediction result of the underground structure, and causes a decrease in the accuracy of the analysis result. That is, seismic wave data with lower quality than the cable type system is acquired.

To solve this problem, GPS (Global Positioning System) clocks are installed in the artificial seismic source and sensor terminal so that the sensor sampling time is promised in advance so that the artificial seismic source can only oscillate at the sensor sampling timing. There is a prior art 1 for designing the oscillation start timing of an artificial seismic source (Patent Document 1). In this specification, this is referred to as GPS synchronous oscillation.

US Patent Application Publication No. 2013/028563

The exploration machine system of the prior art 1 can guarantee that the sampling timing of the sensor and the oscillation start timing of the artificial seismic source coincide only with a specific exciter. For example, an explorer system that samples at 9: 10: 10.002 seconds, 9: 10: 10.004 seconds when the sensor sampling period is 2 milliseconds, the sensor sampling period is 2 millimeters Using the artificial seismic source designed on the premise of sampling at the timing of 9: 10: 10.001 seconds, 9: 10: 10.003 seconds, ... The oscillation start timing of the artificial seismic source cannot be matched. Further, the exploration machine system can realize the timing coincidence only with the exciter that provides the GPS synchronous oscillation. For example, in a shaker equipped with no GPS, the shaker that has received the oscillation request signal from the exploration operator starts oscillating after a predetermined time has elapsed since it was received. In the present specification, this is referred to as trigger-synchronized oscillation. In trigger-synchronized oscillation, the oscillation start timing depends on the timing at which the search operator presses the oscillation button, so the sensor sampling timing and the artificial seismic source oscillation start timing cannot be matched. That is, there is a problem that the exploration system of the prior art 1 cannot match the timing with the shaker already owned by the user and cannot acquire high-quality seismic wave data.

An object of the present invention is to make the oscillation start timing of the artificial seismic source coincide with the sampling timing of the sensor regardless of the oscillation characteristics of the artificial seismic source.

In order to solve the above-described problems, the present invention provides a source controller that controls an artificial seismic source, a seismic source management unit that transmits and receives signals, and a reflected wave that propagates through the formation accompanying the oscillation of the artificial seismic source. A plurality of sensor terminals that manage sensors that receive vibration according to a cycle and generate vibration data; and a management device that manages the seismic center management unit and each sensor terminal; A first timing including an output timing of an oscillation trigger signal output to the source controller and a reception timing of an oscillation start timing signal output from the source controller after the oscillation trigger signal is output. Based on measurement means for acquiring characteristic information and second timing characteristic information set from the management device A delay adjustment unit having a unit for calculating a first timing adjustment amount for adjusting an output timing of the oscillation trigger signal, and the management device is configured to obtain the first obtained by the measurement unit of the epicenter management unit. Determining the oscillation characteristics of the artificial seismic source based on the timing information of 1, and setting the second timing characteristic information in the seismic source management unit according to the determination result, and means for calculating the second timing characteristic information And a second timing adjustment amount for adjusting a sampling timing for the sensor of each sensor terminal based on the second timing characteristic information, and the second timing adjustment amount is calculated based on the second timing characteristic information. It has the means to set to a terminal, It is characterized by the above-mentioned.

According to the present invention, the oscillation start timing of the artificial seismic source and the sampling timing of the sensor can be matched regardless of the oscillation characteristics of the artificial seismic source.

It is a block diagram for demonstrating the outline | summary of the reflection method seismic survey using a shaker and a cableless type exploration system. It is a characteristic view for demonstrating the response delay time characteristic of trigger synchronous oscillation. It is a characteristic view for demonstrating the response delay time characteristic of GPS synchronous oscillation. It is a characteristic diagram for demonstrating the calculation method of the timing adjustment amount in the case of trigger synchronous oscillation. It is a characteristic view for demonstrating the calculation method of the timing adjustment amount in the case of GPS synchronous oscillation. It is a block diagram which shows the whole structure of a cableless type exploration machine system. It is a block diagram of the memory | storage part in a management apparatus. It is a block diagram of oscillation timing characteristic table information. It is a block diagram of the information of the memory | storage part in a sensor terminal. It is a block diagram of the information of the memory | storage part in an epicenter management part. It is a flowchart for demonstrating the whole process of a cableless type explorer system. It is a flowchart for demonstrating the process of the characteristic determination phase of an artificial seismic source. It is a block diagram for demonstrating the example of a display of a touchscreen. It is a sequence diagram for demonstrating the process at the time of measurement. It is a flowchart for demonstrating the process at the time of the setting in an apparatus setting phase. It is a sequence diagram for demonstrating the process at the time of the setting in an apparatus setting phase. It is a flowchart for demonstrating the process at the time of operation in a search operation phase. It is a sequence diagram for demonstrating the process at the time of operation in a search operation phase.

(Summary of Invention)
FIG. 1 is a configuration diagram for explaining the outline of a reflection seismic exploration using a shaker and a cableless exploration system. Although FIG. 1 shows an example in which a shaker is used as an artificial seismic source, dynamite may be used.

In FIG. 1, the seismic reflection survey is performed by the exciter 100 and the explorer system. The exploration machine system includes a management device 110, a plurality of sensor terminals 120, and an epicenter management unit 130. A plurality of sensor terminals 120 are arranged in a distributed manner around the shaker 100, and the shaker management unit 130, the source controller 140, and the actuator 142 are mounted on the shaker 100. When the exploration operator operates the oscillation button of the shaker 100 at the planned oscillation position, the oscillation request signal 151 is input to the epicenter management unit 130. The epicenter management unit 130 provides the oscillation trigger signal 152 to the source controller 140 in response to the oscillation request signal 151. In response to the oscillation trigger signal 152, the source controller 140 outputs a control signal 143 to the actuator 142 for oscillating the shaker 100 to drive the actuator 142. At this time, the source controller 140 outputs an oscillation start timing signal 153 to the epicenter management unit 130 at the same timing as the oscillation start by the oscillation of the shaker 100. When detecting the oscillation start timing signal 153, the epicenter management unit 130 records the detection time in the internal storage (storage unit) as the oscillation start time.

When the vibration generator 100 oscillates, the vibration is reflected by the underground layer, and the reflected wave propagates to each sensor terminal 120. Each sensor terminal 120 receives the reflected wave by a sensor such as a geophone, and stores the received reflected wave as vibration data in an internal storage (storage unit).

When the reflection seismic survey is completed, each sensor terminal 120 is collected, and each collected sensor terminal 120 is transported to a base camp in which the management device 110 is installed.

The management device 110 collects the vibration data acquired from each sensor terminal 120 and records the collected vibration data in the internal storage (storage unit). Thereby, it is possible to acquire vibration data of the reflection seismic survey when the cableless type exploration system is used.

FIG. 2 is a characteristic diagram for explaining the response delay time characteristic of the trigger synchronous oscillation. There are two types of oscillation characteristics of an artificial seismic source in a cableless type exploration system: trigger synchronization oscillation and GPS synchronization oscillation. The trigger-synchronized oscillation is characterized in that oscillation starts after a predetermined time has elapsed since the source controller 140 received the oscillation trigger signal 152.

Specifically, as shown in FIG. 2, when the epicenter management unit 130 that has received the oscillation request signal 151 outputs the oscillation trigger signal 152 to the source controller 140 at time T <b> 1, the source controller 140 sends the epicenter management unit. For 130, an oscillation start timing signal 153 indicating the time to start oscillation is output after a predetermined time has elapsed, that is, at time T2 after the response delay time D1. Thereafter, when the epicenter management unit 130 outputs the oscillation trigger signal 152 to the source controller 140 at the time T3, after the predetermined time has elapsed from the source controller 140 to the epicenter management unit 130, for example, the response delay time D2 At a later time T4, the oscillation start timing signal 153 is output. At this time, the response delay times D1 (= T2-T1) and D2 (= T4-T3) have the same relationship. That is, in the case of trigger synchronous oscillation, in response to the oscillation trigger signal 152, the oscillation start timing signal 153 is always output from the source controller 140 after a certain response delay time D1.

FIG. 3 is a characteristic diagram for explaining the response delay time characteristic of GPS synchronous oscillation. The GPS synchronous oscillation is adjusted so that the oscillation start timing of the artificial seismic source coincides with the sampling timing of the sensor used in the sensor terminal 120. Therefore, after the source controller 140 receives the oscillation trigger signal 152, The response delay time until the hypocenter starts to oscillate varies.

Specifically, as shown in FIG. 3, when the oscillation trigger signal 152 is output from the seismic center management unit 130 at time T1, the source controller 140 determines that the oscillation start timing of the artificial seismic source and the sensor sampling timing are The oscillation start timing signal 153 is output to the epicenter management unit 130 at time T2 so as to match. Next, when the oscillation trigger signal 152 is output from the seismic center management unit 130 at time T3, the source controller 140 determines the response delay time D1 so that the oscillation start timing of the artificial seismic source matches the sensor sampling timing. After a lapse of time different from, the oscillation start timing signal 153 is output to the epicenter management unit 130 at time T4. In this case, the response delay times D1 (= T2-T1) and D2 (= T4-T3) have different relationships.

As described above, since the response delay time characteristics are different between the trigger synchronous oscillation and the GPS synchronous oscillation, the response delay time from the source controller 140 is measured twice, and from the measurement result, when D1 = D2, the trigger synchronous type is used. If it is determined that the oscillation is D1 and D2 are different, it is determined that the oscillation is a GPS-synchronized oscillation, a timing adjustment amount is calculated according to the determination result, and the calculation result is set in each sensor terminal 120 or the epicenter management unit 130. The sampling timing of the sensor and the oscillation start timing of the artificial seismic source are made to coincide.

At this time, the management device 110 provides a trigger output / timing adjustment amount (adjustment time) (adjustment time for adjusting the timing from when the oscillation request signal 151 is received until the oscillation trigger signal 152 is output) First timing adjustment amount) is set, and for each sensor terminal 120, a sampling timing adjustment amount (second timing adjustment amount) is set as a timing adjustment time for the sensor sampling timing.

FIG. 4 is a characteristic diagram for explaining a method of calculating the timing adjustment amount in the case of the trigger synchronous oscillation.

When the management device 110 determines that the oscillation timing characteristic (response delay time characteristic) of the exciter 100 is the trigger-synchronized oscillation, the epicenter management unit 300 performs the sampling timing and oscillation of the maximum sampling period provided by the explorer system. The output timing of the oscillation trigger signal 152 is adjusted according to the trigger output / timing adjustment amount (first timing adjustment amount) so that the start timing signal 153 is synchronized. At this time, the sampling timing adjustment amount for each sensor terminal 120 is set to zero. Here, since the sampling period of the sensor of the explorer system is usually an integer multiple of 2 milliseconds (basic sampling period) such as 2 milliseconds, 4 milliseconds, and 8 milliseconds, the oscillation start timing signal 153 is If it is synchronized with the sampling timing of the maximum sampling period provided by the explorer system, it can be synchronized with respect to all the sampling periods provided by the explorer system.

At this time, in FIG. 4, the hypocenter management unit 130 receives the oscillation request signal 151 at time T0, and the sampling timing of the sensor that first visits after the response delay time D1 of the source controller 140 elapses from time T0. An example in the case of T2 is shown. Here, assuming that the maximum sampling cycle of the sensor is SP_max seconds and the sampling timing of the sensor is 0: 0: 0 + SP_max × N (where N is an integer), the trigger output / timing adjustment amount (first value) The timing adjustment amount can be obtained by the following equation (1).

Here, ΔT_trg means a trigger output / timing adjustment amount, and mod is a remainder operator.

That is, in the trigger-synchronized oscillation, the hypocenter management unit 130 waits for the trigger output / timing adjustment amount after receiving the oscillation request signal 151 and outputs the oscillation trigger signal 152 to the source controller 140, thereby sampling the sensor. The timing and the oscillation start timing 153 of the shaker 100 can be matched.

FIG. 5 is a characteristic diagram for explaining a method of calculating a timing adjustment amount in the case of GPS synchronous oscillation.

When the management device 110 determines that the oscillation timing characteristic (response delay time characteristic) of the exciter 100 is GPS synchronous oscillation, the sensor terminal 120 causes the sensor sampling timing and the oscillation start timing signal 153 to be synchronized. In addition, the sensor sampling timing is adjusted according to the sampling timing adjustment amount. At this time, the value of the sampling timing adjustment amount differs for each sampling period set in the sensor. The trigger output / timing adjustment amount set in the epicenter management unit 130 is set to 0 (but may be any value).

In the case of GPS synchronous oscillation, the oscillation start timing signal 153 output from the source controller 140 after receiving the oscillation trigger signal 152 is output so as to coincide with the sensor sampling timing assumed by the artificial seismic source. At this time, in reflection seismic surveying, it is common to set the sampling period as 1 power of 2 of 8 milliseconds, so the timing at which the oscillation start timing signal 153 can be output is at least 8 milliseconds. Visits periodically at intervals of a power of two or more. In other words, when the sampling period is 1 times the power of 2 in 8 milliseconds, the sampling timing of the sensor and the exciter are adjusted by adjusting the sampling timing of the sensor so that sampling can be performed at the same timing as the time T2. The oscillation start timing of 100 always matches.

At this time, FIG. 5 shows an example in which the source controller 140 receives the oscillation trigger signal 152 at time T1, and then the source controller 140 outputs the oscillation start timing signal 153 at time T2. Here, assuming that the sampling period of the sensor is SP seconds and the sampling timing of the sensor is 0 hour 0 minute 0 second + SP × N (where N is an integer), the sampling timing adjustment amount (second timing adjustment) (Quantity) can be obtained by the following equation (2).

Here, ΔT_smp means a sampling timing adjustment amount, and mod is a remainder operator.

That is, in the GPS synchronous oscillation, the sensor terminal 120 delays the sensor sampling timing by the sampling timing adjustment amount, so that the sensor sampling timing and the oscillation start timing of the exciter 100 (oscillation start timing signal 153). Output timing) can be matched.

FIG. 6 is a configuration diagram showing the overall configuration of the cableless exploration system. In FIG. 6, a cableless type exploration system 10 includes a management device 110, a plurality of sensor terminals 120-a and 120-b (hereinafter sometimes referred to as sensor terminals 120), and an epicenter management unit (seismic source management). Unit) 130, and the management apparatus 110 and each sensor terminal 120 are connected via a network 610. FIG. 6 shows a state in which the management device 110 and the epicenter management unit 130 and the management device 110 and each sensor terminal 120 are connected so as to be able to communicate with each other, but in the search operation phase, the respective connections are disconnected and cannot communicate with each other. It also becomes a configuration.

The management device 110 is a computer device that transmits and receives information to and from the epicenter management unit 130 and each sensor terminal 120 via the network 610, and manages the seismic center management unit 130 and each sensor terminal 120, and includes a processing unit 111, The storage unit 112 and a plurality of

communication units

113 and 114 are connected to each other via an internal bus 115.

The processing unit 111 includes a processor that performs overall control of the entire management apparatus 110, and executes setting processing for each sensor terminal 120 and the epicenter management unit 130. The storage unit 112 is configured as an internal storage, and various information and various programs are stored in the storage unit. The communication unit 113 is configured as a communication interface that communicates with each sensor terminal 120 via the network 610. The communication unit 114 is configured as a communication interface that communicates with the epicenter management unit 130.

Each sensor terminal 120 is a terminal that manages a sensor that generates a vibration data by receiving a reflected wave propagating through the formation according to the oscillation of the artificial seismic source according to a sampling timing cycle, and includes a communication unit 121, a control unit 122, a storage unit 123, a GPS reception unit 124, a sensor unit 125, and an antenna unit 126.

The communication unit 121 is configured as a communication interface that communicates with the management apparatus 110 via the network 610. The control unit 122 includes a processor that performs overall control of the center terminal 120. The storage unit 123 is configured as an internal storage for storing various information and programs. The sensor unit 125 has a geophone that receives the reflected wave when the vibration generated by the vibration generator 100 is reflected by the underground layer and the reflected wave propagates, and vibration data is received when the reflected wave is received. Is generated and transferred to the control unit 122. When the antenna unit 126 receives GPS radio waves, the GPS reception unit 124 outputs a time signal to the control unit 122 based on the received radio waves. At this time, the control unit 122 executes various processes based on the time obtained from the received radio wave received by the GPS receiving unit 124.

The epicenter management unit 130 is a computer unit that transmits and receives signals to and from the source controller 140 that controls the artificial seismic source, and includes a communication unit 131, a control unit 132, a storage unit 133, a GPS reception unit 134, and a delay adjustment. A unit 135, a trigger issuing unit 136, a measuring unit 137, a timing receiving unit 138, and an antenna unit 139. At this time, the epicenter management unit 130 outputs the output timing of the oscillation trigger signal 152 to be output to the source controller 140 among the signals to be transmitted and received, and the output from the source controller 140 after the oscillation trigger signal 152 is output. Information including the reception timing of the oscillation start timing signal 153 is managed as belonging to the oscillation timing characteristic information. A touch panel 160 as a display unit is connected to the control unit 132. Note that the touch panel 160 may be connected to the processing unit 111 of the management apparatus 110.

The communication unit 131 is configured as a communication interface that communicates with the communication unit 114 of the management apparatus 110. The control unit 132 includes a processor that performs overall control of the entire epicenter management unit 130, and executes various processes based on information and programs stored in the storage unit 133. The storage unit 133 is configured as an internal storage that stores various types of information and programs. When receiving the GPS radio wave received by the antenna unit 139, the GPS receiving unit 134 outputs a time signal to the delay adjusting unit 135 and the timing receiving unit 138 based on the received radio wave.

When the delay adjustment unit 135 receives the oscillation request signal 151 in response to the operation of the oscillation button 150, the delay adjustment unit 135 performs processing for delaying the trigger signal 152 for a set time, and outputs the processing result to the trigger issuing unit 136. That is, in the case of trigger-synchronized oscillation, the delay adjustment unit 135 performs a process of delaying the timing at which the oscillation trigger signal 152 is output by the trigger output / timing adjustment amount calculated by Equation (1). Parameters necessary for the delay adjustment unit 135 to calculate the trigger output / timing adjustment amount are provided from the control unit 132. The trigger issuing unit 136 outputs the oscillation trigger signal 152 to the source controller 140. The timing reception unit 138 detects the oscillation start timing signal 153 output from the source controller, and stores the detected time in the storage unit 133 as the oscillation start time. The measurement unit 137 takes in the oscillation trigger signal 152 and the oscillation start timing signal 153 at the time of measurement, measures response delay times D1 and D2 from the difference therebetween, and transfers the measurement results to the control unit 132. At this time, the control unit 132 stores the measurement result in the storage unit 133 and displays it on the display screen of the touch panel 160, and further displays the measurement result and information stored in the storage unit 133 via the communication unit 131. Transfer to the management apparatus 110.

FIG. 7A is a configuration diagram of a storage unit in the management apparatus. In FIG. 7A, the storage unit 112 of the management apparatus 110 stores oscillation timing characteristic table information 701, sampling period setting means 702, oscillation characteristic determination means 703, timing adjustment amount calculation means 704, and sampling timing setting means 705. Trigger output / timing setting means 706, oscillation characteristic determination threshold information 707, and maximum sampling period information 708 are stored.

The oscillation timing characteristic table information 701 is composed of a hypocenter identification name, a mode, a representative response delay time, and a representative oscillation start time (see FIG. 7B). The sampling period setting unit 702 is a program for setting a sampling period for each sensor of the sensor terminal 120. The oscillation characteristic determination unit 703 is a program for determining whether the oscillation timing characteristic of the exciter 100 is a GPS synchronous oscillation or a trigger synchronous oscillation based on the measurement result of the measurement unit 137. The timing adjustment amount calculation means 704 is a program for calculating the sampling timing adjustment amount of the sensor according to the equation (2). The sampling timing setting unit 705 is a program for setting the sampling timing for each sensor according to the calculation result of the timing adjustment amount calculation unit 704 (the calculation result of Formula 2). The trigger output / timing setting means 706 stores parameters (that is, representative response delay time information 901 and maximum sampling period information 902) necessary for the delay adjustment unit 135 to calculate the trigger output / timing adjustment amount in the storage unit of the epicenter management unit 130. This is a program for setting to 133. The maximum sampling period information 708 is a maximum sampling period that can be set in the sensor. The oscillation characteristic determination threshold information 707 is information on the threshold Th used when the oscillation timing characteristic determination unit 703 determines the oscillation timing characteristic of the exciter 100. For example, 50 microseconds is used as this information.

At this time, the processing unit 111 of the management device 110 determines the oscillation characteristics of the artificial seismic source based on the information stored in the storage unit 112 (measurement result information 905 managed by the epicenter management unit), and the oscillation is performed according to the determination result. Information related to oscillation characteristics is added to the timing characteristic table information 701.

FIG. 7B is a configuration diagram of oscillation timing characteristic table information. The oscillation timing characteristic table information is a table for managing the oscillation timing characteristics of one or more artificial seismic sources owned by the user. FIG. 7B shows an example in which the oscillation timing characteristics of three types of artificial seismic sources (namely, Source1, Source2, and Source3) are managed. In FIG. 7B, the oscillation timing characteristic table information 701 includes a hypocenter identification name 701A, a mode 701B, a representative response delay time 701C, and a representative oscillation start time 701D. In the hypocenter identification name 701A, for example, information of “Source1” is stored as the name of the artificial seismic center. In the mode 701B, information of “Trigger” is stored when the oscillation characteristic of the artificial seismic source is the trigger synchronous oscillation. If the oscillation characteristic of the artificial seismic source of the shaker 100 is GPS synchronous oscillation, “GPS” information is stored. In the representative response delay time 701C (represented as D here), in the case of trigger-synchronized oscillation, information “Delay1” is stored as information corresponding to the response delay time D1 measured by the measurement unit 137. In the representative oscillation start time 701D (represented as T here), in the case of trigger-synchronized oscillation, a value indicating the representative oscillation start time and information “0” indicating T = 0 is stored. . In the case of the GPS synchronous oscillation, “0” is stored in the representative response delay time 701C, and the representative oscillation start time 701D corresponds to the time T2 when the timing receiving unit 138 received the oscillation start timing signal at the time of measurement. As the information, “Time 2” is stored.

FIG. 8 is a configuration diagram of information in the storage unit in the sensor terminal. In FIG. 8, sampling period information 801, sampling timing adjustment amount information 802, sampling timing adjustment means 803, and sampling means 804 are stored in the storage unit 123 of the sensor terminal 120.

Sampling cycle information 801 is information related to the sampling cycle set in each sensor of the sensor terminal 120, and is information such as 2 milliseconds, for example. The sampling timing adjustment amount information 802 is information for adjusting the sampling timing set for each sensor of the sensor terminal 120 and is information calculated by the sampling timing adjustment amount calculation means 704. The sampling timing adjustment unit 803 is a program for adjusting the sampling timing of each sensor of the sensor terminal 120 according to the calculation result of the sampling timing adjustment amount calculation unit 704. The sampling means 804 is a program for each sensor of the sensor terminal 120 to sample vibration data.

FIG. 9 is a configuration diagram of information in the storage unit in the epicenter management unit. 9, the storage unit 133 of the epicenter management unit 130 stores representative response delay time information 901, maximum sampling period information 902, basic sampling timing information 903, measurement phase adjustment amount information 904, and measurement result information 905. Oscillation start time information 906, timing error detection means 907, timing error log information 908, oscillation timing characteristic information 909, hypocenter identification name information 910, and representative oscillation start time information 911 are stored.

The representative response delay time information 901 is a value of D1 used in Equation 1, and is information indicating the representative response delay time of the selected artificial seismic source among the representative response delay times 701C in the oscillation timing characteristic table information 701. It is. For example, when Source1 is selected, the information is Delay1. The maximum sampling period information 902 is a sampling period set for each sensor of the sensor terminal 120 and is information indicating the maximum period that can be set, for example, 8 milliseconds. The basic sampling timing information 903 is the time provided by GPS, and when the sensor sampling timing is 0: 0: 0 + SP × N (where SP is the sampling period and N is an integer), the sampling timing adjustment This is information indicating the sampling timing when the quantity (Equation 2) = 0.

The measurement phase adjustment amount information 904 is a value used in the phase adjustment process, and is information indicating, for example, 1 millisecond. The measurement result information 905 is information indicating the measurement result of the measurement unit 137. The oscillation start time information 906 is information indicating the oscillation start time corresponding to the reception time of the oscillation start timing signal 153 received by the timing receiver 138. The timing error detection means 907 is a program for detecting a difference between the reference timing and the generation timing of the oscillation trigger signal 152 in the operation phase (operation time). The timing / error log information 908 is information indicating the detection result of the timing / error detecting means 907. The oscillation timing characteristic information 909 is information indicating whether the oscillation characteristic of the artificial seismic source is a trigger type oscillation or a GPS type oscillation. The epicenter identification name information 910 is information for identifying the name of the artificial seismic center. The representative oscillation start time information 911 is a value of T2 used in Equation 2, and is information indicating the representative oscillation start time of the selected artificial seismic source among the representative oscillation start times 701D in the oscillation timing characteristic table information 701. It is.

FIG. 10 is a flowchart for explaining the entire processing of the cableless type exploration system. In FIG. 10, the process in the cableless type exploration system 10 is composed of three phases. First, in the characteristic determination phase of the artificial earthquake source, the earthquake source management unit 130 measures the response time and response delay time of the artificial earthquake source (these are also referred to as first timing characteristic information), and based on the measurement result, the earthquake source management unit 130 or the management device 110 determines whether it is a trigger synchronous oscillation or a GPS synchronous oscillation, and calculates the timing adjustment amount (first timing adjustment amount or second timing adjustment amount) based on the determination result. Necessary information is recorded in the oscillation timing characteristic table information 701 of the storage unit 112 together with the identification name of the artificial seismic source (S11).

In the equipment setting phase, information necessary for the sensor terminal 120 and the epicenter management unit 130 to adjust the timing is set in each equipment based on the identification name of the artificial seismic source to be used (S12).

In the exploration operation phase, data in which the sampling timing of the sensor of the sensor terminal 120 and the oscillation start timing of the shaker 100 are matched is acquired, and if the timings of the two do not match, processing for issuing an alert is performed. Perform (S13).

FIG. 11 is a flowchart for explaining the process of the characteristic determination phase of the artificial seismic source. This process is executed as a process when measuring the response delay time.

In FIG. 11, the operator connects the epicenter management unit 130 to the source controller 140 (S21), and sets the operation mode of the epicenter management unit 130 to the measurement mode (S22). The operation mode setting method may be a switch mounted on the device, or may be set on a GUI (Graphical User Interface). In this measurement mode, the oscillation request signal 151 generated by operating the oscillation button is identified by the epicenter management unit 130 as a measurement start signal for measurement.

Thereafter, when the operator operates the oscillation button 150, the oscillation request signal 151 is output to the epicenter management unit 130, and the delay adjustment unit 135 receives the oscillation request signal 151 as a measurement start signal (S23). Note that the oscillation button may be a button attached to the device or a button existing on the GUI.

The delay adjustment unit 135 that has received the measurement start signal acquires the reception time at which the measurement start signal was received as the time T1 from the GPS reception unit 134 (S24), stores the acquired time T1, and immediately triggers to the trigger issuing unit 136. A trigger issue signal is output as an issue (S25). The trigger issuing unit 136 that has received the trigger issue signal outputs the oscillation trigger signal 152 to the source controller 140.

After that, the timing receiver 138 receives the oscillation start timing signal 153 as a response signal from the source controller 140, and when a response is detected (S26), acquires the detection time from the GPS receiver 134 as time T2. Store (S27).

Thereafter, the measuring unit 137 calculates the first response delay time D1 as the delay D1 using the time T2 and the time T1 based on the information stored in the trigger issuing unit 136 and the timing receiving unit 138 (S28). ). Here, information including the response delay time D1 and time T2 is referred to as first timing characteristic information.

Next, the control unit 132 executes phase adjustment processing based on the measured phase adjustment amount information 904 and time T1 stored in the storage unit 133, and outputs the processing result to the delay adjustment unit 135 (S29). At this time, the delay adjustment unit 135 determines an output time for outputting the next trigger issue signal to the trigger issue unit 136 based on the measurement phase adjustment amount information 904 and the time T1. This output time is represented by Tout = time T1 + 2 milliseconds × N + (measurement phase adjustment amount information 904). N is an integer. At this time, for example, 1 millisecond is used as the measurement phase adjustment amount information 904. The delay adjusting unit 135 obtains and stores the time as the time T3 from the GPS receiving unit 134 at the output time Tout (S30), and outputs a trigger issue signal to the trigger issue unit 136 as a trigger issue (S31). . Thereafter, the trigger issuing unit 136 outputs the oscillation trigger signal 152 to the source controller 140.

In the phase adjustment process using the measurement phase adjustment amount information 904, the GPS-synchronized oscillation artificial source is erroneously determined as the trigger-synchronized oscillation artificial source between the first measurement and the second measurement. This is necessary to avoid this. In the case of GPS synchronous oscillation, depending on the combination of timings of the second oscillation trigger signal 152, the response delay times D1 and D2 may happen to be the same value. This occurs when the interval between the first and second oscillation trigger signals 152 is an integral multiple of the period at which the artificial seismic source can output the oscillation start timing signal. Since the sampling period of a sensor synchronized with GPS-synchronous oscillation is generally 2 milliseconds, at least the interval between the first and second oscillation trigger signals 152 should not be an integer multiple of 2 milliseconds. Thus, erroneous determination can be avoided. At this time, the epicenter management unit 130 determines the output timing of the oscillation trigger signal 152 in the second and subsequent measurement processes among the two or more measurement processes as the output timing of the oscillation trigger signal 152 in the first measurement process. Adjustment is made so that the interval from the output timing of the oscillation trigger signal 152 in the measurement process is different from an integer multiple of the sampling timing period for the sensor. That is, an adjustment time of about 1 millisecond is preferable, and the measurement phase adjustment amount information 904 is preferably a value of about 1 millisecond.

After step S31, when the timing reception unit 138 detects (response detection) the oscillation start timing signal 153 as a response signal from the source controller 140 (S32), the detection time is set as the time T4 from the GPS reception unit 134. Acquire and store the acquired time T4 (S33).

Next, the measurement unit 137 calculates the response delay time D2 for the second measurement as the delay D2 using the time T4 and the time T3 (S34). At this time, the measurement unit 137 outputs the first and second measurement results to the control unit 132, and the control unit 132 stores each measurement result in the storage unit 133. The first measurement result and the second measurement result are stored in the storage unit 133 as measurement result information 905, respectively. Further, the value of the time T2 detected by the timing receiver 138 is also stored as the oscillation start time information 906. Thereafter, the stored information is transferred by the control unit 132 to the storage unit 112 of the management apparatus 110 via the communication unit 131. This transfer method may be wireless communication such as WiFi, wired communication such as ETHER, or via a USB (Universal Serial Bus) memory.

Next, the processing unit 111 of the management apparatus 110 activates the oscillation characteristic determination unit 703 stored in the storage unit 112, and the oscillation characteristic is determined based on the measurement result information 905 stored in the storage unit 112. It is determined whether the oscillation or the trigger synchronous oscillation (S35). Specifically, the processing unit 111 determines whether or not | D1-D2 | is smaller than the threshold value Th (S35). If the determination result in step S35 is affirmative (Yes), the oscillation characteristic is Information that should be stored in mode 701B of the oscillation timing characteristic table information 701 is generated as mode = Trigger, and information that should be stored in the representative response delay time 701C is generated as D = D1 (Delay 1), assuming that the oscillation is the trigger-synchronized oscillation Then, information to be stored at the representative oscillation start time 701D is generated as T = 0 (S36). Here, information including the representative response delay time and the representative oscillation start time is referred to as second timing characteristic information.

On the other hand, when a negative (No) determination result is obtained in step S <b> 35, the processing unit 111 assumes that the oscillation characteristic is GPS synchronous oscillation, and mode = information as information to be stored in the mode 701 </ b> B of the oscillation timing characteristic table information 701. A GPS is generated, D = 0 is generated as information to be stored in the representative response delay time 701C, and T = T2 (Time 2) is generated as information to be stored in the representative oscillation start time 701D (S37).

Next, the processing unit 111 records the information generated in step S36 or step S37 in the storage unit 112 (S38), and ends the processing in this routine. At this time, in step S38, the processing unit 111 records the earthquake source identification name (Source name) in the earthquake source identification name 701A of the oscillation timing characteristic table information 701, and the mode 701B includes the GPS synchronous oscillation or the trigger synchronous oscillation. Mode information (mode = “Trigger” or “GPS”) is recorded, D = D1 or D = 0 is recorded as the representative response delay time 701C, and the representative oscillation start time 701D is recorded as the representative response delay time. T = 0 or T = T2 is recorded as the representative oscillation start time. Note that the processing from steps S35 to S37 can also be performed by the control unit 132 of the epicenter management unit 130.

At this time, the seismic center management unit 130 receives the oscillation request signal 151 input along with the operation of the oscillation button 150 at the time of measurement (when the measurement mode is set), as the timing of the signal to be transmitted and received, First processing for measuring the output timing of the oscillation trigger signal 152 output to the source controller 140, the reception timing of the oscillation start timing signal 153 output from the source controller 140, and the output timing of the oscillation trigger signal 152 And a second process for calculating the response delay time from the difference between the oscillation start timing signal 153 and the reception timing of the oscillation start timing signal 153 is executed at least twice, and each execution result is stored as information belonging to the oscillation timing characteristic information 909. And transfer to the management device 110.

In addition, the processing unit 111 of the management apparatus 110 has a response delay time calculated in the first measurement process based on the measurement result information 905 including the execution results of two or more times obtained by the measurement process of the epicenter management unit 130. And the response delay time calculated in the second measurement process are equal to each other, it is determined that the oscillation characteristic of the artificial seismic source is a trigger-synchronized oscillation, and the response delay time calculated in the first measurement process is 2 When the response delay times calculated in the second measurement process are different, it is possible to determine that the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation.

FIG. 12 is a configuration diagram for explaining a display example of the touch panel. In FIG. 12, a touch panel 160 is a display device (monitor) or a display unit that can be connected to the control unit 132 of the epicenter management unit 130 or the processing unit 111 of the management device 110. An operation tab 161 for switching the operation mode of the unit 130 to the operation mode, a measurement tab 162 for switching the operation mode of the epicenter management unit 130 to the measurement mode, and a mode for switching the operation mode of the epicenter management unit 130 to the setting mode A setting tab 163, a data output tab 164 for switching the operation mode of the epicenter management unit 130 to the data output mode are arranged, a measurement mode button 165 for switching on / off of the measurement mode, and the epicenter management unit 130 Measurement start button 16 for instructing the start of measurement Is arranged adjacent to the source identification name (Source name), and an input interface 167 for inputting the hypocenter identification name of the artificial seismic source is arranged. Further, in the lower display area, the epicenter management unit 130 is provided. An output window 168 for displaying a processing result in the measurement processing is arranged.

When the operation tab 161 is clicked, the exploration operation phase process is executed as the operation mode. When the measurement tab 162 is clicked, the artificial seismic source characteristic determination phase process is executed as the measurement mode, and the setting tab is displayed. When 163 is clicked, the device setting phase processing is executed. In addition, when the data output tab 164 is clicked, sensor reception data, data indicating a measurement result, and the like are output. The measurement mode button 165 is a button operated when measuring the oscillation characteristics. The measurement start button 166 is a button used when starting measurement of oscillation characteristics. The input interface 167 receives the hypocenter identification name of the artificial seismic center. In the output window 168, the measurement result of the measurement unit 137, for example, the measurement result of the first measurement and the measurement result of the second measurement are displayed, and the determination result of the mode (Mode), that is, the oscillation characteristic of the artificial seismic source is displayed. Information indicating whether the GPS synchronous oscillation or the trigger synchronous oscillation is displayed.

FIG. 13 is a sequence diagram for explaining processing at the time of measurement. In FIG. 13, when the operator 170 operates the oscillation button 150, an oscillation request signal 151 is input to the epicenter management unit 130 as a measurement start signal. The hypocenter management unit 130 outputs an oscillation trigger signal 152 to the source controller 140 in response to the measurement start signal. Thereafter, the source controller 140 outputs a control signal to the actuator and also outputs an oscillation start timing signal 153 to the epicenter management unit 130. At this time, the epicenter management unit 130 executes a delay time calculation process for calculating the response delay time D1 using the oscillation trigger signal 152 and the oscillation start timing signal 153 (S41).

Thereafter, the epicenter management unit 130 outputs the oscillation trigger signal 152 to the source controller 140, and then receives the oscillation start timing signal 153 output from the source controller 140, and receives the second oscillation trigger signal 152 and 2. A delay time calculation process for calculating the response delay time D2 is executed using the first oscillation start timing signal 153 (S42).

Next, the epicenter management unit 130 transfers the processing result of each delay time calculation process to the management apparatus 110 as a measurement result. The management device 110 executes an oscillation timing characteristic determination process for determining whether the oscillation characteristic of the artificial seismic source is a trigger synchronization type oscillation or a GPS synchronization type oscillation based on the measurement result (S43), and the processing result is stored in the storage unit 112. The registration process for registering in the oscillation timing characteristic table information 701 is executed (S44).

FIG. 14 is a flowchart for explaining processing at the time of setting in the device setting phase. First, the operator 170 selects an artificial seismic source to be used (S51), and selects a sampling period SP to be applied to the sensor terminal 120 (S52). Thereafter, when the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation, the management device 110 calculates the sensor sampling timing adjustment amount using Equation 2 (S53), and calculates the calculation result and the sampling period SP. The data is transferred to each sensor terminal 120, and setting write processing for each sensor is executed (S54).

Thereafter, the management device 110 transfers the response delay characteristic information to the epicenter management unit 130, executes processing for setting in the epicenter management unit 130 (S55), and ends the processing in this routine. Here, the response delay characteristic information includes a representative response delay time (D), a representative oscillation start time (T), an oscillation timing characteristic (mode), and a hypocenter identification name (Source name).

FIG. 15 is a sequence diagram for explaining processing at the time of setting in the device setting phase. In FIG. 15, the operator 170 selects the artificial seismic source to be used and the sampling period SP that is suitable for the sensor terminal 120. Thereafter, when the oscillation characteristic of the artificial seismic source is the GPS synchronous oscillation, the management device 110 executes a calculation process for calculating the sampling timing adjustment amount of the sensor using Equation 2 (S61), The sampling period SP and the sampling timing adjustment amount are transferred to the sensor terminals 120 (120-a, 120-b) as parameter setting values, and setting change processing for each sensor is executed (S62, S63).

Thereafter, the management device 110 transfers the response delay characteristic information to the epicenter management unit 130, and representative response delay time information (D), representative oscillation start time information (T), and oscillation timing characteristic information ( mode), setting change processing for setting the epicenter identification name information (Source name) in the storage unit 133 of the epicenter management unit 130 is executed (S64).

FIG. 16 is a flowchart for explaining processing at the time of operation in the search operation phase. First, on condition that the operator 170 has operated the oscillation button 150, the delay adjustment unit 135 of the epicenter management unit 130 receives the oscillation request signal 151 (S71), and acquires the received time as T0 from the GPS reception unit 134. Then, based on the acquired time T0, the trigger output / timing adjustment amount of Equation 1 is calculated (S73), and the trigger output / timing adjustment amount seconds from the acquired time T0 are waited for (S74). The trigger issue signal is output to the trigger issue unit 136. In response to the trigger issue signal, the trigger issue unit 136 outputs the oscillation trigger signal 152 to the source controller 140 (S75).

Thereafter, the timing receiving unit 138 receives the oscillation start timing signal 153 from the source controller 140 (S76), and acquires and stores the received time as T2 from the GPS receiving unit 134.

Thereafter, the control unit 132 executes an error check process based on the information (oscillation timing characteristic information 909) stored in the storage unit 133 (S77), and thereafter determines whether there is an error in the error check process. Determine (S78).

Here, when the oscillation characteristic of the artificial seismic source is the trigger synchronous oscillation, the control unit 132 uses the representative response delay time D, the current response delay time D1, and the threshold Th (= 50 microseconds) to | D−D1 If the value of | is larger than the threshold value Th, it is determined that there is a timing error. This is because if D and D1 do not match, the operator may have set an incorrect device in the device setting phase. When the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation, the control unit 132 uses the representative oscillation start time T, the current oscillation start time T2, the maximum sampling period SP_max that can be provided by the sensor terminal 120, and the threshold Th. If the value of TT2 | mod SP_max is greater than the threshold value Th, it is determined that there is a timing error. This is because if | T−T2 | is not an integral multiple of SP_max, it cannot be guaranteed that the oscillation start timing of the artificial seismic source can be made to coincide for all the sampling periods provided by the explorer system.

Thereafter, when the determination result of affirmative (Yes) is obtained in step S78, the control unit 132 writes the error log in the storage unit 133 (S79), and the content of the error log is displayed as a GUI display on the display screen of the touch panel 160. It is displayed (S80). At this time, in step S79, the control unit 132 writes D, D1, T, T2, mode, and source name in the storage unit 133 as a timing error log.

Next, when a negative (No) determination result is obtained in step S78, or as a process after step S80, the control unit 132 records the oscillation start time in the storage unit 133 (S81). The process ends.

At this time, when the epicenter management unit 130 receives the oscillation request signal 151 input in response to the operation of the oscillation button 150 during the operation, the output timing of the oscillation trigger signal 152 is set with the set first timing adjustment amount. The oscillation trigger signal 152 is output to the source controller 140 at the adjusted timing, and the output timing of the oscillation trigger signal 152 is recorded, and then the oscillation start timing signal 153 output from the source controller 140 is received. In this case, the reception timing at which the oscillation start timing signal 153 is received is recorded, and when the oscillation characteristic of the artificial seismic source is the trigger synchronous oscillation, the current response delay time is calculated from the output timing and the reception timing recorded at the time of operation. , Calculated response delay time and representative When the response delay time 901 is compared, and the difference between the two is larger than the threshold Th, it is determined that there is a timing error, and a timing error log is recorded, and when the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation, The current oscillation start time, which is recorded at the time of operation and indicates the reception timing of the oscillation start timing signal 153, is compared with the representative oscillation start time 911. If the difference between the two is larger than the threshold Th, it is determined that there is a timing error. Record a timing error log.

FIG. 17 is a sequence diagram for explaining processing at the time of operation in the search operation phase. In FIG. 17, on the condition that the operator 170 operates the oscillation button 150, the epicenter management unit 130 receives the oscillation request signal 151, and acquires the received time as T0 from the GPS reception unit 134 (S91).

Next, the epicenter management unit 130 calculates the trigger output / timing adjustment amount based on the acquired time T0 (S92), and waits for the trigger output / timing adjustment amount seconds from the acquired time T0 (S93). The trigger issue signal is output to the trigger issue unit 136. The trigger issuing unit 136 of the epicenter management unit 130 outputs an oscillation trigger signal 152 to the source controller 140 in response to the trigger issuing signal.

Thereafter, the source controller 140 drives the actuator and outputs an oscillation start timing signal 153 to the epicenter management unit 130.

Thereafter, the epicenter management unit 130 acquires the time at which the oscillation start timing signal 153 was received from the GPS reception unit 134, and executes an error check process based on the acquired time and information stored in the storage unit 133 ( S94). At this time, the epicenter management unit 130 determines that | T−T2 | Whether or not | D−D1 | is smaller than a threshold value Th, and is T2 synchronized with the sampling timing of the maximum sampling period of the sensor? Check.

Thereafter, if there is an error in the error check process, the epicenter management unit 130 uses D, D1, mode, and Source name as timing error information (timing error log), and stores the contents of the timing error log as an operator 170. Is displayed on the display screen of the touch panel 160 managed by the computer, and the oscillation start time is recorded in the storage unit 133 (S95). Note that the operator 170 can be notified of the occurrence of a timing error through the GUI by a pop-up or the like.

According to the present embodiment, the oscillation start timing of the artificial seismic source and the sampling timing of the sensor can be matched regardless of the oscillation characteristics of the artificial seismic source, and as a result, high-quality vibration data (seismic wave data) is acquired. be able to. That is, it is possible to match the sampling timing of the sensor and the oscillation start timing of the artificial seismic source for an arbitrary shaker, and high signal quality and flexibility can be realized. Also, the user can acquire high-quality seismic wave data by utilizing the artificial seismic source already owned by the user.

In addition, according to the present embodiment, the oscillation start timing and the sampling timing can be matched even if an artificial seismic source not equipped with GPS is used. Therefore, even when used in combination with any cable type exploration system, the quality is high. Seismic wave data can be acquired. For example, when grassland and urban areas are included in the exploration area, the user should be suitable for environmental conditions, such as installing cable type system sensors in the grassland area and installing cableless system sensor terminals in the urban area. Sensors can be installed, and efficient resource exploration can be performed while maintaining high seismic wave data quality.

In addition, this invention is not limited to the above-mentioned Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. In addition, it is possible to add, delete, and replace other configurations for a part of the configuration of the embodiment.

Also, each of the above-described configurations, functions, etc. may be realized by hardware by designing a part or all of them, for example, by an integrated circuit. Each of the above-described configurations, functions, and the like may be realized by software by interpreting and executing a program that realizes each function by the processor. Information such as programs, tables, and files that realize each function must be recorded on a recording device such as a memory, hard disk, SSD (Solid State Drive), or a recording medium such as an IC card, SD card, or DVD. Can do.

10 Cableless type exploration system, 100 shaker, 110 management device, 111 processing unit, 112 storage unit, 113 communication unit, 114 communication unit, 120 sensor terminal, 121 communication unit, 122 control unit, 123 storage unit, 124 GPS receiver unit, 125 sensor unit, 126 antenna unit, 130 epicenter management unit, 131 communication unit, 132 control unit, 133 storage unit, 134 GPS reception unit, 135 delay adjustment unit, 136 trigger issue unit, 137 measurement unit, 138 timing Receiver, 139 antenna, 140 source controller.

Claims

An epicenter control unit that transmits and receives signals to and from a source controller that controls the artificial seismic center;
A plurality of sensor terminals that manage the sensors that generate the vibration data by receiving the reflected waves propagating through the formation along with the oscillation of the artificial seismic source according to the sampling timing period;
Sending and receiving information via the network with the epicenter management unit and each sensor terminal, and having a management device for managing the epicenter management unit and each sensor terminal,
The epicenter management department
Of the signals to be transmitted and received, the output timing of the oscillation trigger signal output to the source controller and the reception timing of the oscillation start timing signal output from the source controller after the oscillation trigger signal is output. Measuring means for obtaining first timing characteristic information including:
A delay adjustment unit having means for calculating a first timing adjustment amount for adjusting the output timing of the oscillation trigger signal based on second timing characteristic information set from the management device;
The management device
Means for determining the oscillation characteristics of the artificial seismic source based on the first timing information obtained by the measuring means of the epicenter management unit, and calculating the second timing characteristic information according to the determination result;
Means for setting the second timing characteristic information in the epicenter management unit;
Based on the second timing characteristic information, a second timing adjustment amount for adjusting a sampling timing for the sensor of each sensor terminal is calculated, and the second timing adjustment amount is set in each sensor terminal. An exploration machine system comprising means for
The explorer system according to claim 1,
The epicenter management department
The first timing adjustment amount is calculated as a delay time for delaying the output timing of the oscillation trigger signal with reference to the reception timing of the oscillation request signal input to the epicenter management unit in response to the operation of the oscillation button. An exploration system characterized by
The explorer system according to claim 1,
The management device
The explorer system characterized in that the second timing adjustment amount is calculated as a delay time for delaying a sampling timing for the sensor of each sensor terminal for a predetermined time.
The explorer system according to claim 1,
The epicenter management department
A measurement operation mode for acquiring the first timing characteristic information of the artificial seismic source is provided, and when the oscillation request signal input along with the operation of the oscillation button is received in the measurement operation mode, the source controller An output timing of an oscillation trigger signal to be output; a first process for measuring a reception timing of an oscillation start timing signal output from the source controller after the oscillation trigger signal is output; and an output of the oscillation trigger signal A measurement process including a second process for calculating a response delay time from the difference between the timing and the reception timing of the oscillation start timing signal is executed at least twice, and the execution result is stored as the first timing characteristic information. And an exploration machine system that transfers to the management device.
The explorer system according to claim 4,
The management device
When the response delay time calculated in the first measurement process is equal to the response delay time calculated in the second measurement process based on the first timing characteristic information including the execution result of the second or more times , Determining that the oscillation characteristic of the artificial seismic source is a trigger synchronous oscillation, calculating second timing characteristic information based on the result of the determination and the first timing characteristic information,
When the response delay time calculated in the first measurement process is different from the response delay time calculated in the second measurement process, the oscillation characteristic of the artificial seismic source is determined to be GPS synchronous oscillation. The exploration machine system is characterized in that second timing characteristic information is calculated based on the determination result and the first timing characteristic information.
The explorer system according to claim 4,
The epicenter management department
Of the two or more measurement processes, the output timing of the oscillation trigger signal in the second and subsequent measurement processes is the same as the output timing of the oscillation trigger signal in the first measurement process and the oscillation trigger signal in the second measurement process. An exploration machine system, wherein an interval with an output timing is adjusted to be a timing different from an integer multiple of the sampling timing period for the sensor.
The explorer system according to claim 1,
The epicenter management department
An operation operation mode for acquiring vibration data by the sensor terminal, and when the oscillation request signal input in response to the operation of the oscillation button is received in the operation operation mode, the set second timing characteristic Based on the information, the first timing adjustment amount is calculated to adjust the output timing of the oscillation trigger signal, and the oscillation trigger signal is output to the source controller at the adjusted timing, and the oscillation trigger signal When the output timing is recorded and the oscillation start timing signal output from the source controller is received, the reception timing at which the oscillation start timing signal is received is recorded,
When the oscillation characteristic of the artificial seismic source is a trigger synchronous oscillation, a current response delay time is calculated from the output timing and the reception timing recorded during the operation, and the calculated current response delay time and the first response delay time are calculated. 2 is compared with the representative response delay time recorded as the timing characteristic information, and based on the difference between the two, it is determined whether or not there is a timing error. If it is determined that there is a timing error, the timing error Log,
When the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation, the current oscillation start time indicating the reception timing of the oscillation start timing signal recorded during the operation and the representative oscillation recorded as the second timing characteristic information An exploration system characterized by comparing a start time, determining whether there is a timing error based on the difference between the two, and recording a timing error log.
The explorer system according to claim 4,
A display unit that displays information managed by the epicenter management unit;
The display unit
A measurement mode tab for switching the operation mode of the epicenter management unit to a measurement operation mode;
When the epicenter management unit is switched to the measurement operation mode, a measurement start button for instructing the seismic center management unit to start measurement,
An input interface for inputting an epicenter identification name of the artificial seismic source;
An exploration machine system comprising: an output window for displaying a processing result in the measurement processing of the epicenter management unit.
An epicenter control unit that transmits and receives signals to and from a source controller that controls the artificial seismic center;
A plurality of sensor terminals that manage the sensors that generate the vibration data by receiving the reflected waves propagating through the formation along with the oscillation of the artificial seismic source according to the sampling timing period;
Transmission and reception of information via the network with the epicenter management unit and each sensor terminal, a management method in a prospecting system having a management device for managing the seismic center management unit and each sensor terminal,
The source control unit outputs the oscillation trigger signal output to the source controller among the signals to be transmitted / received, and the oscillation start output from the source controller after the oscillation trigger signal is output A management step of managing information including the reception timing of the timing signal as first timing characteristic information;
A management step in which the management device determines the oscillation characteristics of the artificial seismic source based on the first timing characteristic information managed by the epicenter management unit, and calculates and manages the second timing characteristic information according to the determination result. When,
A setting step in which the management device sets second timing characteristic information in the epicenter management unit;
The management device calculates a second timing adjustment amount for adjusting a sampling timing for the sensor of each sensor terminal based on second timing characteristic information, and the second timing adjustment amount is calculated as the second timing adjustment amount. A setting step to set in the sensor terminal;
A first timing adjustment amount for adjusting the output timing of the oscillation trigger signal based on second timing characteristic information, based on second timing characteristic information set by the management apparatus, A calculating step for calculating
The management method characterized by having.
The management method according to claim 9,
The epicenter management department
The first timing adjustment amount is calculated as a delay time for delaying the output timing of the oscillation trigger signal with reference to the reception timing of the oscillation request signal input to the epicenter management unit in response to the operation of the oscillation button. A management method characterized by:
The management method according to claim 9,
The management device
A management method characterized in that the second timing adjustment amount is calculated as a delay time for delaying a sampling timing for the sensor of each sensor terminal for a predetermined time.
The management method according to claim 9,
The epicenter management department
A measurement operation mode for acquiring the first timing characteristic information of the artificial seismic source is provided, and when the oscillation request signal input along with the operation of the oscillation button is received in the measurement operation mode, the source controller An output timing of an oscillation trigger signal to be output; a first process for measuring a reception timing of an oscillation start timing signal output from the source controller after the oscillation trigger signal is output; and an output of the oscillation trigger signal A measurement process including a second process for calculating a response delay time from the difference between the timing and the reception timing of the oscillation start timing signal is executed at least twice, and the execution result is stored as the first timing characteristic information. And transferring to the management device.
The management method according to claim 12,
The management device
When the response delay time calculated in the first measurement process is equal to the response delay time calculated in the second measurement process based on the first timing characteristic information including the execution result of the second or more times , Determining that the oscillation characteristic of the artificial seismic source is a trigger synchronous oscillation, calculating second timing characteristic information based on the result of the determination and the first timing characteristic information,
When the response delay time calculated in the first measurement process is different from the response delay time calculated in the second measurement process, the oscillation characteristic of the artificial seismic source is determined to be GPS synchronous oscillation. And a second timing characteristic information is calculated based on the result of the determination and the first timing characteristic information.
The management method according to claim 12,
The epicenter management department
Of the two or more measurement processes, the output timing of the oscillation trigger signal in the second and subsequent measurement processes is the same as the output timing of the oscillation trigger signal in the first measurement process and the oscillation trigger signal in the second measurement process. A management method comprising adjusting an interval with an output timing to be a timing different from an integer multiple of the sampling timing period for the sensor.
The management method according to claim 9,
The epicenter management department
An operation operation mode for acquiring vibration data by the sensor terminal, and when the oscillation request signal input in response to the operation of the oscillation button is received in the operation operation mode, the set second timing characteristic Based on the information, the first timing adjustment amount is calculated to adjust the output timing of the oscillation trigger signal, and the oscillation trigger signal is output to the source controller at the adjusted timing, and the oscillation trigger signal When the output timing is recorded and the oscillation start timing signal output from the source controller is received, the reception timing at which the oscillation start timing signal is received is recorded,
When the oscillation characteristic of the artificial seismic source is a trigger synchronous oscillation, a current response delay time is calculated from the output timing and the reception timing recorded during the operation, and the calculated current response delay time and the first response delay time are calculated. 2 is compared with the representative response delay time recorded as the timing characteristic information, and if the difference between the two is larger than the threshold value, it is determined whether or not there is a timing error.・ Record error log,
When the oscillation characteristic of the artificial seismic source is GPS synchronous oscillation, the current oscillation start time indicating the reception timing of the oscillation start timing signal recorded during the operation and the representative oscillation recorded as the second timing characteristic information A management method that compares a start time, determines whether there is a timing error based on a difference between the two, and records a timing error log when it is determined that there is a timing error .