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CN112859177B - Control method and system for automatic acquisition of wide-area electromagnetic method - Google Patents

Control method and system for automatic acquisition of wide-area electromagnetic method Download PDF

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CN112859177B
CN112859177B CN202011630267.0A CN202011630267A CN112859177B CN 112859177 B CN112859177 B CN 112859177B CN 202011630267 A CN202011630267 A CN 202011630267A CN 112859177 B CN112859177 B CN 112859177B
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area electromagnetic
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CN112859177A (en
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李成龙
裴婧
蒋奇云
何继善
宾亚新
杨海平
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Central South University
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Abstract

本发明提供了一种广域电磁法自动采集的控制方法和系统，涉及电磁测深技术领域。本发明通过广域电磁法自动采集控制参数生成装置控制广域电磁发射装置和广域电磁接收装置自动发射和接收，并收集勘探数据，完成自动采集和控制。本发明可用于地面可控源探测，在野外勘探时无需专业仪器操作人员干预，可以使仪器自动采集勘探所需的可控源时域数据，采集效率高，工作速度快，自动规范勘探约束，成本大幅度降低。

Figure 202011630267

The invention provides a control method and system for automatic acquisition by a wide-area electromagnetic method, and relates to the technical field of electromagnetic sounding. The invention controls the automatic transmission and reception of the wide-area electromagnetic transmitting device and the wide-area electromagnetic receiving device through the automatic acquisition and control parameter generating device of the wide-area electromagnetic method, collects the exploration data, and completes the automatic acquisition and control. The invention can be used for ground controllable source detection, without the intervention of professional instrument operators during field exploration, and can make the instrument automatically collect the controllable source time domain data required for exploration, with high collection efficiency, fast working speed, and automatic regulation of exploration constraints. Costs are greatly reduced.

Figure 202011630267

Description

Control method and system for automatic acquisition by wide-area electromagnetic method
Technical Field
The invention relates to the technical field of electromagnetic sounding, in particular to a control method and a system for automatic acquisition by a wide-area electromagnetic method.
Background
The wide-area electromagnetic method is proposed with respect to the conventional Controlled Source Audio Magnetotelluric (CSAMT) method and the MELOS method. The method inherits the advantages of using an artificial field source to overcome field source randomness by the CSAMT method and inherits the advantages of non-remote area measurement by the MELOS method; the disadvantage of weak far-zone signals of the CSAMT method is abandoned, the observation application range is expanded, meanwhile, the correction method of the MELOS method is abandoned, and the higher-order terms in the calculation formula are retained; the apparent resistivity is calculated by a formula suitable for the universe without using a Carnia formula or correcting a non-far region to a near region, so that the observation range of an artificial source electromagnetic method is greatly expanded, and the observation speed, the observation precision and the field work efficiency are improved. The wide-area electromagnetic method and the pseudo-random signal electrical method are combined to form a novel electrical prospecting method with unique characteristics.
When the existing wide-area electromagnetic prospecting system is used for field prospecting operation, a high-power wide-area electromagnetic transmitter is generally arranged to embed two AB pole plate groups to send multi-frequency pseudorandom square wave signals to the ground, an instruction is transmitted through a mobile phone or an interphone during each operation, and an operator of the wide-area electromagnetic transmitter sets frequency wave codes and frequency group codes in a pseudorandom multi-frequency wave controller according to the instruction to realize the switching and the transmission of the pseudorandom square wave signals. And then transmitting the ready transmission to wide-area electromagnetic receiver operators distributed at a plurality of measuring points through a mobile phone or an interphone, and controlling the wide-area electromagnetic receiver through a local area network by the receiver operators through operating wide-area electromagnetic receiver control software on a computer to complete one pseudorandom frequency group acquisition operation of the current station.
Therefore, the operation mode of the existing wide-area electromagnetic prospecting system needs a plurality of personnel to cooperate with the operation in a mobile phone or interphone mode, and certain specialized operation training is needed for both transmitting personnel and receiving personnel. If the transmitter is far away from the receiver, the intercom communication loss is caused, meanwhile, in an unmanned area or a mountainous area in the field, when a mobile phone signal is weak or has no signal at all, the whole wide-area electromagnetic exploration system can work normally, transmitting and receiving personnel can be informed only through a vehicle or in a hiking way and back, the waste of great manpower resources is caused, the cost is increased sharply, and the wide-area electromagnetic method in the prior art is low in working efficiency.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a control method and a control system for automatic acquisition of a wide-area electromagnetic method, which solve the technical problem of low working efficiency of the wide-area electromagnetic method in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the invention provides a control method for automatic acquisition by a wide-area electromagnetic method, which comprises the following steps:
acquiring a time node control constraint formula from a parameter information table of an exploration target;
acquiring key control time nodes in the automatic acquisition process of the wide-area electromagnetic system based on the time control constraint formula, and adding the key control time nodes into a parameter information table;
defining a communication control code and a data structure packet, and distributing the parameter information table with the key control time node to a sending end and an acquisition end of a wide-area electromagnetic method system based on the communication control code, the data structure packet and a communication mechanism algorithm;
and inputting the parameter information table with the key control time node into an automatic control core, and performing operation and processing of an automatic acquisition control algorithm to finish acquisition of exploration data.
Preferably, the obtaining of the time node control constraint formula based on the parameter information table of the exploration target includes:
calculating transmitted specific frequency wave code Fw based on parameter information table of exploration targetiAnd a frequency group coding FgiThe one-time complete acquisition task comprises n groups of sent pseudo-random signals, and a time node control constraint formula is derived according to the working principle of a wide-area electromagnetic system and the links of the control acquisition process, wherein the formula is shown as (1):
Figure BDA0002874435750000031
wherein:
Tnrepresenting the total time required for a complete acquisition task;
i represents the number of times;
Trdy(x) Fw representing the x-th orderiFg of frequency waveiThe transmission preparation time of the frequency group is calculated by the following formula (2):
Trdy(x)＝δt*fmin(Fw(Fg(x)))+Tsw (2)
in the formula, deltatTo transmit coefficients, TswTime is consumed for switching the circuit;
Tsnd(x) Fw of the x-th orderiFg of frequency waveiThe transmission holding time of the frequency group signal is calculated by the following formula (3), (4) and (5):
Tsnd(x)＝Ro+Rgain(x)+Rsamp(x) (3)
Rgain(x)＝θt*fmax(Fw(Fg(x)))*Wcnt (4)
Rsamp(x)＝fmin(Fw(Fg(x)))*NPeriod*Wcnt (5)
in the formula, RoFor acquisition of control core initialization time, θtTo adjust the coefficient, WcntNumber of operations, NPeriodNumber of common cycles, Rgain(x) Calculating time for the x-th automatic gain, Rsamp(x) Time spent for the x-th automatic acquisition, fmax(x) And fmin(x) Respectively extracting FwiFrequency wave FgiThe maximum and minimum frequencies in a frequency group are time consuming.
Preferably, the obtaining of the key control time node in the automatic acquisition process of the wide-area electromagnetic method system based on the time control constraint formula and the adding of the key control time node into the parameter information table include:
the total time T required by the automatic acquisition of a complete acquisition task of a key control time node in the automatic acquisition process of the wide-area electromagnetic method system can be calculated by a time control constraint formulanWherein the transmission starting time node of each sub-frequency group is Ti-1The acquisition control time node for the sending frequency group to enter the stable state is T(i-1)+Trdy(i) The time control node for completing the emission and the collection of the frequency group is TiWill Ti-1、T(i-1)+Trdy(i) And TiAdding the data into a parameter information table.
Preferably, defining a communication control code and a data structure packet, and distributing the parameter information table with the key control time node to a sending end of a wide-area electromagnetic method system and collecting the parameter information table based on the communication control code, the data structure packet and a communication mechanism algorithm, includes:
the communication operation code mainly comprises: the request control table sends a code Event _ ReqSendTbl and a reply response code Event _ AskSendTbl; the data structure packet is composed of a data structure header and an attached data stream, and the data structure header EMEP _ MSG mainly includes: message source, connection type, control code, operation code, channel code, data type, sub-packet size, total packet size and check code; the transmitting end of the wide-area electromagnetic method system sends a request for establishing communication connection to the receiving end, and after the communication connection is successfully established in response, each subsystem of the wide-area electromagnetic method system starts to transmit heartbeat packets at regular time to update system state information;
after a communication link is established, a transmitting end of the wide area electromagnetic method system creates an Event _ ReqSendTbl operation code request control table with an automatic acquisition time control node and control parameters through a data structure packet construction function, transmits a data structure body packet head EMEP _ MSG and an attached transmission data stream defined by the packet head, and distributes the attached transmission data stream to each subsystem of the wide area electromagnetic method system; after receiving the attached transmission data stream defined by the data structure packet header EMEP _ MSG and the packet header, the receiving end respectively checks the integrity and the correctness of the attached transmission data stream, and then forwards the attached transmission data stream to the message queue to sequentially analyze the data structure packet header and the transmission data stream; analyzing and responding a data structure body packet with an Event _ AskSendTbl operation code to a transmitting end of the wide-area electromagnetic method system; the parameter information table with the key control time node is directionally, completely and accurately distributed to each subsystem of the wide-area electromagnetic method system through a communication mechanism with request, response, transmission and verification.
Preferably, the step of inputting the parameter information table with the key control time node and the control parameter into an automatic control core, and performing operation and processing of an automatic acquisition control algorithm to complete acquisition of the exploration data includes:
according to the data acquisition requirement of the exploration task, the parameter information table with the key control time nodes comprises acquisition parameter information and key control time nodes, and the acquisition parameter information is input into an automatic control core to carry out operation and processing of an automatic acquisition control algorithm.
The invention also provides a control system for wide-area electromagnetic method automatic acquisition, which comprises:
the wide-area electromagnetic emission device is used for emitting multi-frequency pseudo-random square wave signals;
the wide-area electromagnetic receiving device is used for receiving the multi-frequency pseudo-random signal;
the wide-area electromagnetic method automatic acquisition control parameter generation device is used for controlling the wide-area electromagnetic emission device and the wide-area electromagnetic receiving device to automatically emit and receive based on a parameter information table of an exploration target and collecting exploration data, and specifically comprises the following steps:
acquiring a time node control constraint formula based on a parameter information table of an exploration target;
acquiring key control time nodes in the automatic acquisition process of the wide-area electromagnetic system based on the time control constraint formula, and adding the key control time nodes into a parameter information table;
defining a communication control code and a data structure packet, and distributing a parameter information table to a sending end and a collecting end of a wide-area electromagnetic method system based on the communication control code, the data structure packet and a communication mechanism algorithm;
and inputting the acquisition parameter information into an automatic control core, and performing operation and processing of an automatic acquisition control algorithm.
Preferably, the automatic control core includes: the system comprises an emission automatic control core and an acquisition automatic control core, wherein the emission automatic control core is used for controlling a wide-area electromagnetic emission device to emit multi-frequency pseudo-random square wave signals, and an acquisition automatic control center is used for a wide-area electromagnetic receiving device to receive the multi-frequency pseudo-random signals.
Preferably, the obtaining of the time node control constraint formula based on the parameter information table of the exploration target includes:
calculating transmitted specific frequency wave code Fw based on parameter information table of exploration targetiAnd a frequency group coding FgiThe one-time complete acquisition task comprises n groups of sent pseudo-random signals, and a time node control constraint formula is derived according to the working principle of a wide-area electromagnetic system and the links of the control acquisition process, wherein the formula is shown as (1):
Figure BDA0002874435750000061
wherein:
Tnrepresenting the total time required for a complete acquisition task;
i represents the number of times;
Trdy(x) Fw representing the x-th orderiFg of frequency waveiThe transmission preparation time of the frequency group is calculated by the following formula (2):
Trdy(x)＝δt*fmin(Fw(Fg(x)))+Tsw (2)
in the formula, deltatTo transmit coefficients, TswTime is consumed for switching the circuit;
Tsnd(x) Fw of the x-th orderiFg of frequency waveiThe transmission holding time of the frequency group signal is calculated by the following formula (3), (4) and (5):
Tsnd(x)＝Ro+Rgain(x)+Rsamp(x) (3)
Rgain(x)＝θt*fmax(Fw(Fg(x)))*Wcnt (4)
Rsamp(x)＝fmin(Fw(Fg(x)))*NPeriod*Wcnt (5)
in the formula, RoFor acquisition of control core initialization time, θtTo adjust the coefficient, WcntNumber of operations, NPeriodNumber of common cycles, Rgain(x) For the x-th time of the automatic gain calculation time,
Rsamp(x) Time spent for the x-th automatic acquisition, fmax(x) And fmin(x) Respectively extracting FwiFrequency wave FgiThe maximum and minimum frequencies in a frequency group are time consuming.
Preferably, the obtaining of the key control time node in the automatic acquisition process of the wide-area electromagnetic method system based on the time control constraint formula and the adding of the key control time node into the parameter information table include:
the total time T required by the automatic acquisition of a complete acquisition task of a key control time node in the automatic acquisition process of the wide-area electromagnetic method system can be calculated by a time control constraint formulanWherein the transmission starting time node of each sub-frequency group is Ti-1The acquisition control time node for the sending frequency group to enter the stable state is T(i-1)+Trdy(i) The time control node for completing the emission and the collection of the frequency group is TiWill Ti-1、T(i-1)+Trdy(i) And TiAdding the data into a parameter information table.
Preferably, defining a communication control code and a data structure packet, and distributing the parameter information table with the key control time node to a sending end of a wide-area electromagnetic method system and collecting the parameter information table based on the communication control code, the data structure packet and a communication mechanism algorithm, includes:
the communication operation code mainly comprises: the request control table sends a code Event _ ReqSendTbl and a reply response code Event _ AskSendTbl; the data structure packet is composed of a data structure header and an attached data stream, and the data structure header EMEP _ MSG mainly includes: message source, connection type, control code, operation code, channel code, data type, sub-packet size, total packet size and check code; the transmitting end of the wide-area electromagnetic method system sends a request for establishing communication connection to the receiving end, and after the communication connection is successfully established in response, each subsystem of the wide-area electromagnetic method system starts to transmit heartbeat packets at regular time to update system state information;
after a communication link is established, a transmitting end of the wide area electromagnetic method system creates an Event _ ReqSendTbl operation code request control table with an automatic acquisition time control node and control parameters through a data structure packet construction function, transmits a data structure body packet head EMEP _ MSG and an attached transmission data stream defined by the packet head, and distributes the attached transmission data stream to each subsystem of the wide area electromagnetic method system; after receiving the attached transmission data stream defined by the data structure packet header EMEP _ MSG and the packet header, the receiving end respectively checks the integrity and the correctness of the attached transmission data stream, and then forwards the attached transmission data stream to the message queue to sequentially analyze the data structure packet header and the transmission data stream; analyzing and responding a data structure body packet with an Event _ AskSendTbl operation code to a transmitting end of the wide-area electromagnetic method system; the parameter information table with the key control time node is directionally, completely and accurately distributed to each subsystem of the wide-area electromagnetic method system through a communication mechanism with request, response, transmission and verification.
(III) advantageous effects
The invention provides a control method and a system for automatic acquisition by a wide-area electromagnetic method. Compared with the prior art, the method has the following beneficial effects:
the control method and the system for the automatic acquisition of the wide-area electromagnetic method can be used for the detection of the ground controllable source, do not need the intervention of professional instrument operators during field exploration, can enable the instrument to automatically acquire the controllable source time domain data required by exploration, and have the advantages of high acquisition efficiency, high working speed, automatic specification of exploration constraint and substantial reduction of cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a block diagram of a control method for automatic acquisition by a wide-area electromagnetic method;
FIG. 2 is a block diagram of EMEP _ MSG;
fig. 3 is a control schematic diagram of wide-area electromagnetic method automatic acquisition.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the application provides a control method for automatic acquisition by a wide area electromagnetic method, solves the technical problem of low work efficiency of the wide area electromagnetic method in the prior art, realizes the work of cooperative acquisition of exploration data by an automatic acquisition system, and improves the work efficiency.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
the existing wide-area electromagnetic prospecting system operation mode needs a plurality of personnel to cooperate with the operation in a mobile phone or interphone mode, and certain specialized operation training is needed for transmitting personnel and receiving personnel. If the transmitter is far away from the receiver, the intercom communication loss is caused, meanwhile, in an unmanned area or a mountainous area in the field, when a mobile phone signal is weak or has no signal at all, the whole wide-area electromagnetic prospecting system can not work normally, transmitting and receiving personnel can be notified only through a vehicle or by walking to and fro in two places, so that the great manpower resource waste is caused, the cost is increased sharply, and the operation efficiency is low. In addition, when the multi-frequency pseudorandom signal is sent or switched each time, manual operation is required to be performed by a transmitter operator and a receiver operator, so that the operation difficulty is increased, and a certain misoperation rate also exists. In particular to exploration areas with high altitude and bad terrain, such as Sichuan-Tibet plateau, and the construction difficulty and the time and labor cost are greatly increased. Therefore, a control method for wide-area electromagnetic method automatic acquisition is urgently needed for field exploration. The embodiment of the invention provides a brand-new control method for automatically acquiring a wide-area electromagnetic method, which obtains a method for calculating a key control time node by deducing a time node control constraint formula, subsequently defines a set of communication control codes and a data structure packet, correctly and completely distributes parameter information of the automatic acquisition control method with the key control time node to a control core of the wide-area electromagnetic method system through a communication mechanism algorithm with request, response, transmission and verification, and finally designs an automatic acquisition control algorithm running in the automatic control core according to the acquisition data requirement of an exploration task to finish the work of cooperatively acquiring exploration data of the automatic acquisition system. The method can realize automatic acquisition of field exploration in exploration areas with high altitude, severe relief and bad terrain, and can obtain high-precision and accurate exploration acquisition data without the intervention of professional operators.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
The embodiment of the invention provides a control method for automatic acquisition by a wide-area electromagnetic method, which comprises the following steps of S1-S4:
s1, acquiring a time node control constraint formula from a parameter information table of the exploration target;
s2, acquiring key control time nodes in the automatic acquisition process of the wide-area electromagnetic method system based on the time control constraint formula, and adding the key control time nodes into a parameter information table;
s3, defining a communication control code and a data structure packet, and distributing a parameter information table with a key control time node to a sending end and a collecting end of the wide-area electromagnetic method system based on the communication control code, the data structure packet and a communication mechanism algorithm;
and S4, inputting the parameter information table with the key control time node into the automatic control core, and performing operation and processing of an automatic acquisition control algorithm to finish acquisition of exploration data.
The control method for the automatic acquisition of the wide-area electromagnetic method can be used for ground controllable source detection, does not need the intervention of professional instrument operators during field exploration, can enable the instrument to automatically acquire controllable source time domain data required by exploration, and has the advantages of high acquisition efficiency, high working speed, automatic specification of exploration constraint and substantial reduction of cost.
The following describes each step in detail:
in step S1, a time node control constraint formula is obtained based on the parameter information table of the exploration target, and the specific implementation process is as follows:
calculating transmitted specific frequency wave code Fw based on parameter information table of exploration targetiAnd a frequency group coding FgiThe one-time complete acquisition task comprises n groups of sent pseudo-random signals, and a time node control constraint formula is derived according to the working principle of a wide-area electromagnetic system and the links of the control acquisition process, wherein the formula is shown as (1):
Figure BDA0002874435750000111
wherein:
Tnrepresenting the total time required for a complete acquisition task;
i represents the number of times;
Trdy(x) Fw representing the x-th orderiFg of frequency waveiThe transmission preparation time of the frequency group is calculated by the following formula (2):
Trdy(x)＝δt*fmin(Fw(Fg(x)))+Tsw (2)
in the formula, deltatTo transmit coefficients, TswTime is consumed for switching the circuit;
Tsnd(x) Fw of the x-th orderiFg of frequency waveiThe transmission holding time of the frequency group signal is calculated by the following formula (3), (4) and (5):
Tsnd(x)＝Ro+Rgain(x)+Rsamp(x) (3)
Rgain(x)＝θt*fmax(Fw(Fg(x)))*Wcnt (4)
Rsamp(x)＝fmin(Fw(Fg(x)))*NPeriod*Wcnt (5)
in the formula, RoFor acquisition of control core initialization time, θtTo adjust the coefficient, WcntNumber of operations, NPeriodNumber of common cycles, Rgain(x) Calculating time for the x-th automatic gain, Rsamp(x) Time spent for the x-th automatic acquisition, fmax(x) And fmin(x) Respectively extracting FwiFrequency wave FgiThe maximum and minimum frequencies in a frequency group are time consuming.
In step S2, a key control time node in the automatic acquisition process of the wide-area electromagnetic system is obtained based on the time control constraint formula, and the key control time node is added to the parameter information table. The specific implementation process is as follows:
the total time T required by the automatic acquisition of a complete acquisition task of a key control time node in the automatic acquisition process of the wide-area electromagnetic method system can be calculated by a time control constraint formulanWherein the transmission starting time node of each sub-frequency group is Ti-1The acquisition control time node for the sending frequency group to enter the stable state is T(i-1)+Trdy(i) The time control node for completing the emission and the collection of the frequency group is Ti. Will Ti-1、T(i-1)+Trdy(i) And TiAdding the data into a parameter information table.
In step S3, a communication control code and a data structure packet are defined, and based on the communication control code, the data structure packet and a communication mechanism algorithm, a parameter information table with a key control time node is distributed to a sending end and a collecting end of the wide-area electromagnetic method system. The specific implementation process is as follows:
the communication operation code mainly comprises: the request control table transmits a code Event _ ReqSendTbl and a reply response code Event _ ask sendtbl. The data structure packet is composed of a data structure header and an attached data stream, and the data structure header EMEP _ MSG mainly includes: the structure of the message source, connection type, control code, operation code, channel code, data type, packet size, total packet size, check code, EMEP _ MSG is shown in fig. 2. And the transmitting terminal of the wide-area electromagnetic method system sends a request for establishing communication connection to the receiving terminal, and after the communication connection is successfully established in response, each subsystem of the wide-area electromagnetic method system starts to transmit heartbeat packets at regular time to update the state information of the system.
After a communication link is established, a transmitting end of the wide area electromagnetic method system creates an Event _ ReqSendTbl operation code request control table with an automatic acquisition time control node and control parameters through a data structure packet construction function, transmits a data structure body packet head EMEP _ MSG and an attached transmission data stream defined by the packet head, and distributes the attached transmission data stream to each subsystem of the wide area electromagnetic method system; after receiving the attached transmission data stream defined by the data structure packet header EMEP _ MSG and the packet header, the receiving end respectively checks the integrity and the correctness of the attached transmission data stream, and then forwards the attached transmission data stream to the message queue to sequentially analyze the data structure packet header and the transmission data stream; analyzing and responding a data structure body packet with an Event _ AskSendTbl operation code to a transmitting end of the wide-area electromagnetic method system; the parameter information table with the key control time node is directionally, completely and accurately distributed to each subsystem of the wide-area electromagnetic method system through a communication mechanism with request, response, transmission and verification.
In step S4, the parameter information table with the key control time node and the control parameters are input to the automatic control core, and the operation and processing of the automatic acquisition control algorithm are performed to complete the acquisition of the exploration data. The specific implementation process is as follows:
according to the data acquisition requirement of the exploration task, the parameter information table with the key control time nodes can be obtained through the steps S1-S3, the parameter information table with the key control time nodes comprises acquisition parameter information and key control time nodes, the acquisition parameter information is input into an automatic control core (the automatic control core comprises an acquisition automatic control core and a transmission automatic control core), and the operation and processing of an automatic acquisition control algorithm are carried out. Firstly, initializing an acquisition automatic control core to enable the acquisition automatic control core to enter a processing state; acquiring the total number N of acquisition parameter informationcntChecking each piece of information ID1To
Figure BDA0002874435750000131
If not, entering further processing. Entry ID using a polling mechanism to establish a loopiTreatment from NcntGet ID iniTo check the current IDiWhether the entry is complete; accumulating entry count ID if donei+1And jumps to the next entry IDi+1Processing, otherwise, continuing to check IDiWhether the project name and the task name in the entry are consistent with the transmitting terminal information of the current wide-area electromagnetic method system or not; accumulating entry count ID if donei+1And jumps to the next entry IDi+1Processing, otherwise checking IDiThe working method identification in the item; if the mode IS a non-automatic acquisition mode (such as CS, IS, WFEM and the like), calculating storage address and coordinate information and entering single-mode sampling; if the mode is an automatic acquisition mode (AWFEM), after the control core obtains the synchronous signal, a temporary item linked list is established
Figure BDA0002874435750000132
And accumulating the total number of entries McntUntil the total number N of the parameter information is acquiredcntIs polled. Next based on the item linked list
Figure BDA0002874435750000133
And total number McntEntering an AWFEM working mode, acquiring system synchronous state information and confirming to enter a synchronous working state; the item linked list can be obtained according to the total time formula in the above step S1
Figure BDA0002874435750000134
Total time of
Figure BDA0002874435750000135
Let total time of day be TdayCalculating the number of cycles of the day cycle
Figure BDA0002874435750000136
The second count calculation of the current time taken by the synchronization system is currently in the fourth cycle, i.e.
Figure BDA0002874435750000137
Controlling the time node according to the transmission in the above step S2
Figure BDA0002874435750000138
Acquisition control time node
Figure BDA0002874435750000139
Figure BDA00028744357500001310
And the number of seconds that the current cycle period has elapsed
Figure BDA00028744357500001311
The next linked list to be automatically collected and controlled can be obtained
Figure BDA0002874435750000141
Specific item i ofsp(ii) a If ispEqual to 0, the termination entry is identified as ESAssigned a value of McntOtherwise, it is marked as isp(ii) a Then get the ithspAll control information of the entry, when checking its completion flag as incomplete, allocates a time domain numberObtaining coordinate information according to the storage address and the space and updating the coordinate information into the control parameters; next, the time of the day second information of the synchronous system is monitored, and time nodes are controlled according to the acquisition
Figure BDA0002874435750000142
Figure BDA0002874435750000143
Calculating the number of acquisition waiting seconds, and entering after the acquisition time arrives
Figure BDA0002874435750000144
Collecting; setting a channel used for collection and an AD sampling rate, carrying out gain self-adaptive calculation, then setting the number of sampling data, a sampling identifier and a synchronous identifier of boundary alignment, starting an interrupted collection function, caching the collected data into 64 eMMC blocks after the collected data enters each channel cache region, and continuously writing the data into a storage body until the data is cached into 64 eMMC blocks until the data is cached into the storage body
Figure BDA0002874435750000145
Finishing data acquisition, updating the size of the acquired channel data into the control parameters, and continuing to enter the step ispIn the next entry of (1), by
Figure BDA0002874435750000146
And termination entry identification ESJudging until the whole item linked list is completed
Figure BDA0002874435750000147
Collecting work of (1); and finally writing the updated control parameters into the parameter storage area.
In the actual operation process, the specific method of the control method for the wide-area electromagnetic method automatic acquisition is as follows:
(1) designing working parameters: and according to the exploration target, obtaining coordinate information of target measuring lines and measuring points, and designing a proper frequency wave and frequency group combination for transmitting the pseudo-random signals. And calculating key control nodes in the automatic acquisition process of the wide-area electromagnetic method system according to a time node control constraint formula.
(2) And (3) control parameter distribution: and establishing an automatic acquisition time control node and control parameters through an EMEP _ MSG data structure packet construction function, and correctly and completely distributing the parameter information of the automatic acquisition control method with the key time node to a wide-area electromagnetic method system control core through a communication mechanism algorithm with request, response, transmission and verification.
(3) And controlling the processing core to run an automatic acquisition control algorithm. And (4) after the wide-area electromagnetic method system obtains the acquisition parameter information with the automatic acquisition time control node and the control parameter, inputting the acquisition parameter information into a control processing core, carrying out operation and processing of an automatic acquisition control algorithm, and obtaining the acquisition data information of the exploration area after processing by the method of the step S4.
An embodiment of the present invention further provides a control system for wide-area electromagnetic method automatic acquisition, as shown in fig. 3, the system includes: the wide-area electromagnetic emission device, the wide-area electromagnetic receiving device and the wide-area electromagnetic method automatic acquisition control parameter generation device.
Wherein:
the wide-area electromagnetic transmitting device is used for transmitting multi-frequency pseudo-random square wave signals and comprises a wide-area high-power transmitter, a pseudo-random signal controller and the like. The wide-area electromagnetic receiving device is used for receiving the multi-frequency pseudorandom signals, and both the wide-area electromagnetic transmitting device and the wide-area electromagnetic receiving device are the prior art and are not described herein again.
The wide-area electromagnetic method automatic acquisition control parameter generation device is used for controlling the wide-area electromagnetic emission device and the wide-area electromagnetic receiving device to automatically emit and receive based on a parameter information table of an exploration target and collecting exploration data. The specific operation is as follows:
acquiring a time node control constraint formula based on a parameter information table of an exploration target;
acquiring key control time nodes in the automatic acquisition process of the wide-area electromagnetic system based on the time control constraint formula, and adding the key control time nodes into a parameter information table;
defining a communication control code and a data structure packet, and distributing a parameter information table with key control time nodes to a sending end and an acquisition end of a wide-area electromagnetic method system based on the communication control code, the data structure packet and a communication mechanism algorithm;
and inputting the acquisition parameter information into an automatic control core, and performing operation and processing of an automatic acquisition control algorithm.
The automatic control core comprises an automatic emission control core and an automatic acquisition control core, wherein the automatic emission control core is used for controlling a wide-area electromagnetic emission device (an emission end in a corresponding method) to emit multi-frequency pseudo-random square wave signals, and the automatic acquisition control core is used for a wide-area electromagnetic receiving device (a receiving end in a corresponding method) to receive the multi-frequency pseudo-random signals.
It can be understood that the task scheduling system of the control system for automatic acquisition by the wide-area electromagnetic method provided in the embodiment of the present invention corresponds to the task scheduling method of the control system for automatic acquisition by the wide-area electromagnetic method, and the explanation, the example, the verification, and other related contents thereof may refer to corresponding contents in the task scheduling method of the control system for automatic acquisition by the wide-area electromagnetic method, and are not described herein again.
In summary, compared with the prior art, the method has the following beneficial effects:
1. the embodiment of the invention realizes the automatic acquisition and exploration work of the wide-area electromagnetic method system, so that the field exploration can be completed without the intervention of professional instrument operators through automatic control, and compared with the traditional method, the method is simpler and more intelligent, and has high acquisition efficiency and high working speed.
2. By using the method of the embodiment of the invention, the method can play a prominent role particularly in the local harsh environment which cannot be adapted by professional technicians in areas with high altitude and severe terrain conditions, such as the Sichuan-Tibet plateau and the like, and can simply engage local residents to complete exploration by using the control technology of the wide-area electromagnetic system for automatic acquisition. A professional technician can perform intelligent exploration operation by the method of the embodiment of the invention only by completing automatic acquisition and basic parameter constraint design at a site.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1.一种广域电磁法自动采集的控制方法，其特征在于，包括：1. a control method for automatic collection of wide-area electromagnetic method, is characterized in that, comprises: 基于勘探目标的参数信息表获取时间节点控制约束公式；Obtain the time node control constraint formula based on the parameter information table of the exploration target; 基于所述时间控制约束公式获取广域电磁法系统自动采集过程中的关键控制时间节点，将所述关键控制时间节点加入到参数信息表中；Acquire key control time nodes in the automatic acquisition process of the wide-area electromagnetic method system based on the time control constraint formula, and add the key control time nodes to the parameter information table; 定义通信控制码和数据结构包，基于通信控制码、数据结构包和通信机制算法，将所述带有关键控制时间节点的参数信息表分发至广域电磁法系统发送端和采集端；Define a communication control code and a data structure package, and distribute the parameter information table with key control time nodes to the sending end and the collecting end of the wide-area electromagnetic method system based on the communication control code, the data structure package and the communication mechanism algorithm; 将所述带有关键控制时间节点的参数信息表输入到自动控制核心，进行自动采集控制算法的运行和处理，完成采集勘探数据；其中，所述基于勘探目标的参数信息表获取时间节点控制约束公式，包括：The parameter information table with key control time nodes is input into the automatic control core, and the operation and processing of the automatic acquisition control algorithm are performed to complete the acquisition of exploration data; wherein, the parameter information table based on the exploration target obtains time node control constraints formulas, including: 基于勘探目标的参数信息表计算发送的特定频波编码Fwi和频组编码Fgi的组合信息，一次完整的采集任务包含n组发送的伪随机信号，根据广域电磁法系统工作原理和控制采集过程环节，推导出时间节点控制约束公式，如式(1)所示：Based on the parameter information table of the exploration target , the combination information of the specific frequency wave code Fwi and the frequency group code Fg i is calculated. A complete acquisition task includes n groups of pseudo-random signals sent. In the acquisition process, the time node control constraint formula is derived, as shown in formula (1):
Figure FDA0003320297600000011
Figure FDA0003320297600000011
 其中：in: Tn表示一次完整的采集任务所需的总时间；T n represents the total time required for a complete acquisition task; i表示次数；i represents the number of times; Trdy(x)表示第x次的Fwi频波的Fgi频组的发送准备时间，由如式(2)计算所得：T rdy (x) represents the transmission preparation time of the Fgi frequency group of the xth Fwi frequency wave, which is calculated by the formula (2): Trdy(x)＝δt*fmin(Fw(Fg(x)))+Tsw (2)T rdy (x)=δ t *f min (Fw(Fg(x)))+T sw (2) 式中，δt为发送系数，Tsw为切换电路耗时；In the formula, δ t is the transmission coefficient, and T sw is the switching circuit time consumption; Tsnd(x)为第x次的Fwi频波的Fgi频组信号的发送维持时间，由如式(3)(4)(5)计算所得：T snd (x) is the transmission holding time of the Fg i frequency group signal of the xth Fw i frequency wave, which is calculated by the formula (3) (4) (5): Tsnd(x)＝Ro+Rgain(x)+Rsamp(x) (3)T snd (x)=R o +R gain (x)+R samp (x) (3) Rgain(x)＝θt*fmax(Fw(Fg(x)))*Wcnt (4)R gain (x)=θ t *f max (Fw(Fg(x)))*W cnt (4) Rsamp(x)＝fmin(Fw(Fg(x)))*NPeriod*Wcnt (5)R samp (x)=f min (Fw(Fg(x)))*N Period *W cnt (5) 式中，Ro为采集控制核心初始化时间，θt为调增系数，Wcnt工作次数，NPeriod公共周期数，Rgain(x)为第x次的自动增益计算时间，Rsamp(x)为第x次的自动采集消耗时间，fmax(x)和fmin(x)分别是提取Fwi频波Fgi频组里的最大和最小频率耗时。In the formula, R o is the initialization time of the acquisition control core, θ t is the adjustment coefficient, W cnt works times, N Period public period number, R gain (x) is the x-th automatic gain calculation time, R samp (x) is the consumption time of the x-th automatic acquisition, f max (x) and f min (x) are respectively the time consumption of extracting the maximum and minimum frequencies in the frequency group of Fw i frequency wave Fg i . 2.如权利要求1所述的广域电磁法自动采集的控制方法，其特征在于，所述基于所述时间控制约束公式获取广域电磁法系统自动采集过程中的关键控制时间节点，将所述关键控制时间节点加入到参数信息表中，包括：2. The control method for automatic acquisition of the wide-area electromagnetic method according to claim 1, wherein the key control time node in the automatic acquisition process of the wide-area electromagnetic method system is obtained based on the time control constraint formula, and the The key control time nodes described above are added to the parameter information table, including: 由时间控制约束公式可以计算出广域电磁法系统自动采集过程中的关键控制时间节点，自动采集一次完整的采集任务所需的总时间Tn，其中每一次频组的发射起始时间节点为Ti-1，发送频组进入稳定状态的采集控制时间节点为T(i-1)+Trdy(i)，频组的发射和采集完成的时间控制节点为Ti，将Ti-1、T(i-1)+Trdy(i)和Ti加入到参数信息表中。The key control time node in the automatic acquisition process of the wide-area electromagnetic method system can be calculated from the time control constraint formula, and the total time T n required for automatic acquisition of a complete acquisition task, where the transmission start time node of each frequency group is T i-1 , the acquisition control time node at which the sending frequency group enters a stable state is T (i-1) +T rdy (i), and the time control node at which the transmission and acquisition of the frequency group are completed is T i , the T i-1 , T (i-1) + T rdy (i) and T i are added to the parameter information table. 3.如权利要求1所述的广域电磁法自动采集的控制方法，其特征在于，定义通信控制码和数据结构包，基于通信控制码、数据结构包和通信机制算法，将所述带有关键控制时间节点的参数信息表分发至广域电磁法系统发送端和采集，包括：3. the control method of wide-area electromagnetic method automatic acquisition as claimed in claim 1, it is characterized in that, define communication control code and data structure package, based on communication control code, data structure package and communication mechanism algorithm, described with The parameter information table of key control time nodes is distributed to the transmitter of the wide-area electromagnetic method system and collected, including: 通信操作码为主要包括：请求控制表发送码Event_ReqSendTbl和回复应答码Event_AskSendTbl；数据结构包由数据结构包头和附带数据流组成，数据结构包头EMEP_MSG主要包括：消息源、连接类型、控制编码、操作码、通道编码、数据类型、分包大小、总包大小、校验码；广域电磁法系统的发射端向接收端发送建立通信连接请求，应答成功建立通信连接后，广域电磁法系统各个子系统开始定时传送心跳包，将系统状态信息进行更新；The communication operation code mainly includes: the request control table sending code Event_ReqSendTbl and the reply response code Event_AskSendTbl; the data structure packet is composed of a data structure header and an accompanying data stream. The data structure header EMEP_MSG mainly includes: message source, connection type, control code, operation code , channel code, data type, packet size, total packet size, check code; the transmitter of the wide-area electromagnetic method system sends a request to establish a communication connection to the receiving end, and after the response is successfully established, each sub-system of the wide-area electromagnetic method system The system starts to transmit heartbeat packets regularly to update the system status information; 建立通信链路后广域电磁法系统的发射端通过数据结构包构建函数创建带自动采集时间控制节点和控制参数的Event_ReqSendTbl操作码请求控制表发送数据结构体包头EMEP_MSG和包头所定义的附带传输数据流，并将其分发至广域电磁法系统各个子系统；接收端收到数据结构体包头EMEP_MSG和包头所定义的附带传输数据流后分别对其进行完整性和正确性校验，再转送到消息队列中依次进行数据结构体包头和传输数据流的解析处理；解析处理后应答带Event_AskSendTbl操作码的数据结构体包至广域电磁法系统的发射端；其中带关键控制时间节点的参数信息表通过带请求、应答、传输、校验的通信机制，定向完整精确的分发至广域电磁法系统各个子系统中。After the communication link is established, the transmitter of the wide-area electromagnetic method system creates the Event_ReqSendTbl opcode with automatic acquisition time control node and control parameters through the data structure package construction function, and requests the control table to send the data structure header EMEP_MSG and the incidental transmission data defined by the header. After receiving the data structure header EMEP_MSG and the incidental transmission data stream defined by the header, it will be checked for integrity and correctness, and then forwarded to In the message queue, the data structure packet header and the transmission data stream are parsed and processed in turn; after the parsing process, the data structure packet with the Event_AskSendTbl opcode is responded to the transmitter of the wide-area electromagnetic method system; the parameter information table with the key control time node is included. Through the communication mechanism with request, response, transmission and verification, it is distributed to each subsystem of the wide-area electromagnetic system in a complete and accurate direction. 4.如权利要求1所述的广域电磁法自动采集的控制方法，其特征在于，所述将所述带有关键控制时间节点的参数信息表和控制参数输入到自动控制核心，进行自动采集控制算法的运行和处理，完成采集勘探数据，包括：4. The control method for automatic acquisition of wide-area electromagnetic method as claimed in claim 1, wherein the described parameter information table with key control time node and control parameters are input into the automatic control core, and automatic acquisition is performed. Control the operation and processing of the algorithm to complete the acquisition of exploration data, including: 根据勘探任务的采集数据需求，带有关键控制时间节点的参数信息表包括采集参数信息和关键控制时间节点，将采集参数信息输入到自动控制核心，进行自动采集控制算法的运行和处理。According to the acquisition data requirements of exploration tasks, the parameter information table with key control time nodes includes acquisition parameter information and key control time nodes, and the acquisition parameter information is input into the automatic control core to run and process the automatic acquisition control algorithm. 5.一种广域电磁法自动采集的控制系统，其特征在于，包括：5. A control system for automatic collection of wide-area electromagnetic methods, characterized in that, comprising: 广域电磁发射装置用于发射多频伪随机方波信号；The wide-area electromagnetic transmitter is used to transmit multi-frequency pseudo-random square wave signals; 广域电磁接收装置用于接收多频伪随机信号；The wide-area electromagnetic receiving device is used for receiving multi-frequency pseudo-random signals; 广域电磁法自动采集控制参数生成装置用于基于勘探目标的参数信息表控制广域电磁发射装置和广域电磁接收装置自动发射和接收，并收集勘探数据，具体为：The wide-area electromagnetic method automatic acquisition and control parameter generation device is used to control the automatic transmission and reception of the wide-area electromagnetic transmitting device and the wide-area electromagnetic receiving device based on the parameter information table of the exploration target, and collect exploration data, specifically: 基于勘探目标的参数信息表获取时间节点控制约束公式；Obtain the time node control constraint formula based on the parameter information table of the exploration target; 基于所述时间控制约束公式获取广域电磁法系统自动采集过程中的关键控制时间节点，将所述关键控制时间节点加入到参数信息表中；Acquire key control time nodes in the automatic acquisition process of the wide-area electromagnetic method system based on the time control constraint formula, and add the key control time nodes to the parameter information table; 定义通信控制码和数据结构包，基于所述通信控制码、数据结构包和通信机制算法，将参数信息表分发至广域电磁法系统发送端和采集端；Define a communication control code and a data structure package, and distribute the parameter information table to the sending end and the collecting end of the wide-area electromagnetic method system based on the communication control code, the data structure package and the communication mechanism algorithm; 将采集参数信息输入到自动控制核心，进行自动采集控制算法的运行和处理；Input the acquisition parameter information into the automatic control core to run and process the automatic acquisition control algorithm; 其中，所述基于勘探目标的参数信息表获取时间节点控制约束公式，包括：Wherein, the time node control constraint formula obtained from the parameter information table based on the exploration target includes: 基于勘探目标的参数信息表计算发送的特定频波编码Fwi和频组编码Fgi的组合信息，一次完整的采集任务包含n组发送的伪随机信号，根据广域电磁法系统工作原理和控制采集过程环节，推导出时间节点控制约束公式，如式(1)所示：Based on the parameter information table of the exploration target , the combination information of the specific frequency wave code Fwi and the frequency group code Fg i is calculated. A complete acquisition task includes n groups of pseudo-random signals sent. In the acquisition process, the time node control constraint formula is derived, as shown in formula (1):
Figure FDA0003320297600000041
Figure FDA0003320297600000041
 其中：in: Tn表示一次完整的采集任务所需的总时间；T n represents the total time required for a complete acquisition task; i表示次数；i represents the number of times; Trdy(x)表示第x次的Fwi频波的Fgi频组的发送准备时间，由如式(2)计算所得：T rdy (x) represents the transmission preparation time of the Fgi frequency group of the xth Fwi frequency wave, which is calculated by the formula (2): Trdy(x)＝δt*fmin(Fw(Fg(x)))+Tsw (2)T rdy (x)=δ t *f min (Fw(Fg(x)))+T sw (2) 式中，δt为发送系数，Tsw为切换电路耗时；In the formula, δ t is the transmission coefficient, and T sw is the switching circuit time consumption; Tsnd(x)为第x次的Fwi频波的Fgi频组信号的发送维持时间，由如式(3)(4)(5)计算所得：T snd (x) is the transmission holding time of the Fg i frequency group signal of the xth Fw i frequency wave, which is calculated by the formula (3) (4) (5): Tsnd(x)＝Ro+Rgain(x)+Rsamp(x) (3)T snd (x)=R o +R gain (x)+R samp (x) (3) Rgain(x)＝θt*fmax(Fw(Fg(x)))*Wcnt (4)R gain (x)=θ t *f max (Fw(Fg(x)))*W cnt (4) Rsamp(x)＝fmin(Fw(Fg(x)))*NPeriod*Wcnt (5)R samp (x)=f min (Fw(Fg(x)))*N Period *W cnt (5) 式中，Ro为采集控制核心初始化时间，θt为调增系数，Wcnt工作次数，NPeriod公共周期数，Rgain(x)为第x次的自动增益计算时间，Rsamp(x)为第x次的自动采集消耗时间，fmax(x)和fmin(x)分别是提取Fwi频波Fgi频组里的最大和最小频率耗时。In the formula, R o is the initialization time of the acquisition control core, θ t is the adjustment coefficient, W cnt works times, N Period public period number, R gain (x) is the x-th automatic gain calculation time, R samp (x) is the consumption time of the x-th automatic acquisition, f max (x) and f min (x) are respectively the time consumption of extracting the maximum and minimum frequencies in the frequency group of Fw i frequency wave Fg i . 6.如权利要求5所述的广域电磁法自动采集的控制系统，其特征在于，所述自动控制核心包括：发射自动控制核心和采集自动控制核心，发射自动控制核心用于控制广域电磁发射装置发射多频伪随机方波信号，采集自动控制中心用于广域电磁接收装置接收多频伪随机信号。6. The control system for automatic acquisition of wide-area electromagnetic method as claimed in claim 5, wherein the automatic control core comprises: a launch automatic control core and an acquisition automatic control core, and the launch automatic control core is used to control the wide-area electromagnetic method The transmitting device transmits a multi-frequency pseudo-random square wave signal, and the collection automatic control center is used for the wide-area electromagnetic receiving device to receive the multi-frequency pseudo-random signal. 7.如权利要求5所述的广域电磁法自动采集的控制系统，其特征在于，所述基于所述时间控制约束公式获取广域电磁法系统自动采集过程中的关键控制时间节点，将所述关键控制时间节点加入到参数信息表中，包括：7. The control system for automatic acquisition of the wide-area electromagnetic method according to claim 5, wherein the key control time node in the automatic acquisition process of the wide-area electromagnetic method system is obtained based on the time control constraint formula, and the The key control time nodes described above are added to the parameter information table, including: 由时间控制约束公式可以计算出广域电磁法系统自动采集过程中的关键控制时间节点，自动采集一次完整的采集任务所需的总时间Tn，其中每一次频组的发射起始时间节点为Ti-1，发送频组进入稳定状态的采集控制时间节点为T(i-1)+Trdy(i)，频组的发射和采集完成的时间控制节点为Ti，将Ti-1、T(i-1)+Trdy(i)和Ti加入到参数信息表中。The key control time node in the automatic acquisition process of the wide-area electromagnetic method system can be calculated from the time control constraint formula, and the total time T n required for automatic acquisition of a complete acquisition task, where the transmission start time node of each frequency group is T i-1 , the acquisition control time node at which the sending frequency group enters a stable state is T (i-1) +T rdy (i), and the time control node at which the transmission and acquisition of the frequency group are completed is T i , the T i-1 , T (i-1) + T rdy (i) and T i are added to the parameter information table. 8.如权利要求5所述的广域电磁法自动采集的控制系统，其特征在于，定义通信控制码和数据结构包，基于通信控制码、数据结构包和通信机制算法，将所述带有关键控制时间节点的参数信息表分发至广域电磁法系统发送端和采集，包括：8. The control system for automatic collection of wide-area electromagnetic methods as claimed in claim 5, characterized in that, a communication control code and a data structure package are defined, and based on the communication control code, the data structure package and the communication mechanism algorithm, the The parameter information table of key control time nodes is distributed to the transmitter of the wide-area electromagnetic method system and collected, including: 通信操作码为主要包括：请求控制表发送码Event_ReqSendTbl和回复应答码Event_AskSendTbl；数据结构包由数据结构包头和附带数据流组成，数据结构包头EMEP_MSG主要包括：消息源、连接类型、控制编码、操作码、通道编码、数据类型、分包大小、总包大小、校验码；广域电磁法系统的发射端向接收端发送建立通信连接请求，应答成功建立通信连接后，广域电磁法系统各个子系统开始定时传送心跳包，将系统状态信息进行更新；The communication operation code mainly includes: the request control table sending code Event_ReqSendTbl and the reply response code Event_AskSendTbl; the data structure packet is composed of a data structure header and an accompanying data stream. The data structure header EMEP_MSG mainly includes: message source, connection type, control code, operation code , channel code, data type, packet size, total packet size, check code; the transmitter of the wide-area electromagnetic method system sends a request to establish a communication connection to the receiving end, and after the response is successfully established, each sub-system of the wide-area electromagnetic method system The system starts to transmit heartbeat packets regularly to update the system status information; 建立通信链路后广域电磁法系统的发射端通过数据结构包构建函数创建带自动采集时间控制节点和控制参数的Event_ReqSendTbl操作码请求控制表发送数据结构体包头EMEP_MSG和包头所定义的附带传输数据流，并将其分发至广域电磁法系统各个子系统；接收端收到数据结构体包头EMEP_MSG和包头所定义的附带传输数据流后分别对其进行完整性和正确性校验，再转送到消息队列中依次进行数据结构体包头和传输数据流的解析处理；解析处理后应答带Event_AskSendTbl操作码的数据结构体包至广域电磁法系统的发射端；其中带关键控制时间节点的参数信息表通过带请求、应答、传输、校验的通信机制，定向完整精确的分发至广域电磁法系统各个子系统中。After the communication link is established, the transmitter of the wide-area electromagnetic method system creates the Event_ReqSendTbl opcode with automatic acquisition time control node and control parameters through the data structure package construction function, and requests the control table to send the data structure header EMEP_MSG and the incidental transmission data defined by the header. After receiving the data structure header EMEP_MSG and the incidental transmission data stream defined by the header, it will be checked for integrity and correctness, and then forwarded to In the message queue, the data structure packet header and the transmission data stream are parsed and processed in turn; after the parsing process, the data structure packet with the Event_AskSendTbl opcode is responded to the transmitter of the wide-area electromagnetic method system; the parameter information table with the key control time node is included. Through the communication mechanism with request, response, transmission and verification, it is distributed to each subsystem of the wide-area electromagnetic system in a complete and accurate direction.
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