Electromagnetic wave adaptive frequency selection method, system and device

Abstract

The invention belongs to the technical field of oil and gas intelligent drilling, and particularly relates to an electromagnetic wave adaptive frequency selection method, system and device. The method comprises the following steps: receiving a starting instruction, and sending a sweep frequency emission control decision; an echo signal is read, and the optimal working frequency is determined according to the echo signal; the echo signal is a result returned by emitting electromagnetic waves according to the frequency sweep emission control decision; sending out an optimal work control decision according to the optimal work frequency; the optimal work decision is used for guiding the work content executed by the electromagnetic wave adaptive frequency selection device in the current bottom layer environment. After entering a reservoir stratum, a high-frequency electromagnetic wave transmitting circuit performs frequency sweeping within a certain bandwidth, a receiving end detects the strength of a direct wave signal, the corresponding frequency when the strength of the received direct wave signal is the highest is the optimal working frequency of a transceiving antenna, and the information is fed back to the high-frequency electromagnetic wave transmitting circuit; and then transmitting at the same frequency.

Description

Technical Field

[0001] The present invention belongs to the technical field of intelligent oil and gas drilling, and in particular relates to an electromagnetic wave adaptive frequency selection method, system and device. Background Art

[0002] With the continuous development of the oil and gas industry and the increasing difficulty of exploration and development, the oil and gas industry has gradually turned to unconventional oil and gas reservoirs with thin oil and gas layers, poor physical properties and strong heterogeneity. The application of special process wells such as directional wells and horizontal wells has also increased year by year. In order to ensure that the drill bit always drills in the reservoir, it is necessary to measure the upper and lower boundaries of the reservoir while drilling to ensure that the drill bit is in the best position in the reservoir. However, in actual drilling, due to the limitations of existing measurement while drilling tools, the drill bit often penetrates the reservoir or cannot be kept in the best position in the reservoir, affecting the drilling rate of the reservoir and the recovery rate of oil and gas resources.

[0003] The radial boundary detection technology of reservoirs while drilling based on high-frequency electromagnetic wave reflection ranging can solve the above problems well. During the drilling of horizontal wells, the transmitting antenna of the radial boundary detection tool for reservoirs while drilling installed near the drill bit transmits high-frequency electromagnetic waves with a frequency of more than 100MHz into the reservoir. Due to the difference in electrical characteristics between the reservoir and the caprock, the electromagnetic waves will be reflected at the interface between the two rock formations. By detecting and processing the received reflected wave signals, the distance between the drill tool horizontally drilling in the reservoir and the upper and lower caprocks can be accurately and quantitatively calculated, so that the drill tool always drills along the best position of the reservoir, thereby improving the reservoir drilling rate and the oil and gas recovery rate of a single well.

[0004] Stratigraphic detection can be classified as a distance measurement problem, and the two core indicators are detection accuracy and detection depth. Since high-frequency electromagnetic waves have the characteristics of short wavelength, the detection accuracy is relatively high, reaching the centimeter level. The detection depth indicator is mainly determined by the attenuation, reflection, scattering and other characteristics of high-frequency electromagnetic waves when propagating in the reservoir, as well as the antenna transmission and reception efficiency, signal transmission power and reflection echo detection capability of the while-drilling reservoir radial boundary detection tool. Summary of the invention

[0005] In view of the above problems, the present disclosure provides an electromagnetic wave adaptive frequency selection method, which is applied to an electromagnetic wave adaptive frequency selection device. The method includes:

[0006] Receive the start command and issue the sweep frequency transmission control decision;

[0007] Reading an echo signal, and determining an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision;

[0008] An optimal working control decision is issued according to the optimal working frequency; the optimal working decision is used to guide the working content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

[0009] In a preferred embodiment of the present solution, the sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

[0010] In a preferred embodiment of the present solution, the preset frequency range is 400 MHz-600 MHz, and the preset step difference is 10 MHz.

[0011] In a preferred embodiment of this solution, the frequency sweep transmission includes:

[0012] According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

[0013] In a preferred embodiment of the present solution, reading the echo signal and determining the optimal operating frequency according to the echo signal includes:

[0014] reading the echo signal;

[0015] Calculating the signal voltage average value of the echo signal at different transmission frequencies;

[0016] The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

[0017] In a preferred embodiment of this solution, the method further comprises:

[0018] When the electromagnetic wave adaptive frequency selection device is in a horizontal state, a preset control decision is issued;

[0019] The preset control decision is to emit high-frequency electromagnetic waves according to a preset pulse width signal.

[0020] The present disclosure also proposes an electromagnetic wave adaptive frequency selection system, the system comprising:

[0021] The first transmitting module is used to receive a start instruction and issue a sweep frequency transmitting control decision;

[0022] A determination module, used to read an echo signal and determine an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision;

[0023] An execution module issues an optimal work control decision according to the optimal working frequency; the optimal work decision is used to guide the work content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

[0024] In a preferred embodiment of the present solution, the sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

[0025] In a preferred embodiment of this solution, the frequency sweep transmission includes:

[0026] According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

[0027] In a preferred embodiment of the present solution, the determination module is used to read the echo signal and determine the optimal operating frequency according to the echo signal, including:

[0028] The determination module is used to read the echo signal;

[0029] Calculating the signal voltage average value of the echo signal at different transmission frequencies;

[0030] The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

[0031] In a preferred embodiment of this solution, the system further includes:

[0032] The control module is used to issue a preset control decision when the electromagnetic wave adaptive frequency selection device is in a horizontal state.

[0033] The present disclosure also proposes an electromagnetic wave adaptive frequency selection device, characterized in that the device includes a main control unit, and the main control unit is used to implement any of the electromagnetic wave adaptive frequency selection methods described above.

[0034] In a preferred embodiment of the present solution, the device further comprises a continuous wave signal source, a power amplifier, a transmitting antenna, a receiving antenna and a signal acquisition and processing unit;

[0035] The continuous wave signal source is used to receive the sweep frequency transmission control decision and the optimal working control decision, and output the corresponding pulse trigger signal;

[0036] The power amplifier is used to amplify the pulse trigger signal;

[0037] The transmitting antenna is used to receive the amplified pulse trigger signal and execute the sweep frequency transmission control decision or the optimal working control decision;

[0038] The receiving antenna is used to receive the echo signal;

[0039] The signal acquisition and processing unit is used to acquire the echo signal and send the echo signal to the main control unit.

[0040] In a preferred embodiment of the present solution, the device further comprises a pulse signal source and a time domain control switch;

[0041] The pulse signal source is connected to the main control unit and receives a pulse control instruction issued by the main control unit;

[0042] The time domain control switch is arranged between the continuous wave signal source and the power amplifier, and the control switch performs a switching action according to the output of the pulse signal source.

[0043] The present disclosure also provides an electromagnetic wave adaptive frequency selection device, comprising:

[0044] Processor and memory;

[0045] The processor calls the computer program stored in the memory to execute any one of the electromagnetic wave adaptive frequency selection methods described above.

[0046] The present disclosure also provides a computer-readable storage medium,

[0047] The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute any one of the electromagnetic wave adaptive frequency selection methods described above.

[0048] The present disclosure has the following beneficial effects:

[0049] The present invention discloses that after entering the reservoir, the high-frequency electromagnetic wave transmitting circuit performs frequency scanning within a certain bandwidth, and the receiving end detects the direct wave signal strength. The frequency corresponding to when the received direct wave signal strength is the strongest is the optimal operating frequency of the transceiver antenna. This information is fed back to the high-frequency electromagnetic wave transmitting circuit, and then transmission is performed at this frequency.

[0050] The signal emitted by the present invention is an electromagnetic wave signal with a time domain pulse width in the nanosecond level, which can not only ensure that the reservoir detection tool while drilling has a high detection resolution, but also ensure that the transmitted signal can be efficiently and highly fidelity transmitted to the reservoir detection tool layer while drilling through the antenna, thereby effectively improving the detection depth of the reservoir detection tool while drilling. At the same time, this signal source has an adaptive function, can adapt to different formation environments, and output single-frequency modulated pulse signals of different frequencies.

[0051] Since different formation environments have an impact on the working frequency band of the transceiver antenna, in order to ensure the efficiency of the transmitted signal, the output signal frequency of the signal source should be consistent with the center frequency of the transmitting antenna. Therefore, after entering the reservoir, the high-frequency electromagnetic wave transmitting circuit needs to scan the frequency within a certain bandwidth, and the receiving end detects the received signal strength. The frequency corresponding to the strongest received signal strength is the optimal working frequency of the transceiver antenna. This information is fed back to the high-frequency electromagnetic wave transmitting circuit, and then transmitted at this frequency.

[0052] Other features and advantages of the present disclosure will be described in the following description, and partly become apparent from the description, or be understood by implementing the present disclosure. The purpose and other advantages of the present disclosure can be realized and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0054] Figure 1 A diagram showing a method for adaptive frequency selection of electromagnetic waves in an embodiment of the present disclosure is shown;

[0055] Figure 2 A detailed flow chart of the electromagnetic wave adaptive frequency selection method in the embodiment of the present disclosure is shown;

[0056] Figure 3 A diagram of an electromagnetic wave adaptive frequency selection system in an embodiment of the present disclosure is shown;

[0057] Figure 4 A diagram of an electromagnetic wave adaptive frequency selection device in an embodiment of the present disclosure is shown;

[0058] Figure 5 A diagram of an electromagnetic wave adaptive frequency selection device in an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0059] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the examples set forth herein; on the contrary, these embodiments are provided so that the present disclosure will be more comprehensive and complete, and the concepts of the example embodiments are fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced while omitting one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid obscuring various aspects of the present disclosure.

[0060] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware units or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0061] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the steps. For example, some steps may be decomposed, while some steps may be combined or partially combined, so the actual execution order may change according to the actual situation.

[0062] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example.

[0063] In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or sub-modules is not necessarily limited to those steps or sub-modules explicitly listed, but may include other steps or sub-modules not explicitly listed or inherent to these processes, methods, products, or apparatuses.

[0064] Since different formation environments have an impact on the working frequency band of the high-frequency electromagnetic wave antenna of the while-drilling reservoir radial boundary detection tool, it directly determines the transceiver efficiency of the high-frequency electromagnetic wave antenna of the while-drilling reservoir radial boundary detection tool, thereby affecting the detection depth of the entire system. In order to solve the above problem, the present invention proposes an electromagnetic wave adaptive frequency selection method and transmission system for a while-drilling reservoir boundary detection tool. It can adaptively transmit electromagnetic wave signals with the optimal frequency according to different formation environments, thereby improving the detection depth of the system.

[0065] like Figure 1 As shown, the present disclosure proposes an electromagnetic wave adaptive frequency selection method, which is applied to an electromagnetic wave adaptive frequency selection device, and the method includes:

[0066] Receive the start command and issue the sweep frequency transmission control decision;

[0067] Reading an echo signal, and determining an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision;

[0068] An optimal working control decision is issued according to the optimal working frequency; the optimal working decision is used to guide the working content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

[0069] Specifically, the sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

[0070] Specifically, the preset frequency range is 400 MHz-600 MHz, and the preset step difference is 10 MHz.

[0071] Specifically, the frequency sweep transmission includes:

[0072] According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

[0073] Specifically, reading the echo signal and determining the optimal operating frequency according to the echo signal includes:

[0074] reading the echo signal;

[0075] Calculating the signal voltage average value of the echo signal at different transmission frequencies;

[0076] The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

[0077] Specifically, the method further includes:

[0078] When the electromagnetic wave adaptive frequency selection device is in a horizontal state, a preset control decision is issued;

[0079] The preset control decision is to emit high-frequency electromagnetic waves according to a preset pulse width signal.

[0080] like Figure 2 As shown, the specific workflow of this method is:

[0081] Step 1: When the drill bit carries the reservoir edge detection tool while drilling to the oil and gas reservoir and starts the horizontal section operation, the main control unit of the single-frequency modulation pulse source receives the start-up command transmitted from the ground through MWD and other methods, and controls the continuous wave signal source to perform sweep frequency transmission at 400MHz to 600MHz with an interval of 10MHz, for a total of 20 times. Each fixed frequency transmission lasts for about 100ns, and the transmission interval is 10s. The signal sampling and processing unit of the reservoir edge detection tool receiver while drilling collects the received signal in real time, and the main control unit reads the received signal, calculates the average value of the voltage amplitude of the received signal under different transmission frequencies, and sets the frequency corresponding to the highest signal strength average value as the optimal operating frequency of the transceiver antenna;

[0082] Step 2: After calculating the optimal operating frequency of the transceiver antenna under the current formation environment, the main control unit controls the continuous wave signal source to transmit at this frequency. When the rotation angle sensor detects that the tool face where the antenna is located is horizontally facing upward or downward, that is, the angle is 0° or 180°, the main control unit controls the pulse signal source to output a pulse trigger signal with a voltage amplitude of about 2V and a pulse width of 5ns, thereby turning on the nanosecond time domain switch circuit and outputting a single-frequency modulated pulse signal with a pulse width of 6ns to 10ns.

[0083] like Figure 3 As shown, the present disclosure also proposes an electromagnetic wave adaptive frequency selection system, the system comprising:

[0084] The first transmitting module is used to receive a start instruction and issue a sweep frequency transmitting control decision;

[0085] A determination module, used to read an echo signal and determine an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision;

[0086] An execution module issues an optimal work control decision according to the optimal working frequency; the optimal work decision is used to guide the work content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

[0087] Specifically, the sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

[0088] Specifically, the frequency sweep transmission includes:

[0089] According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

[0090] Specifically, the determination module is used to read the echo signal and determine the optimal operating frequency according to the echo signal, including:

[0091] The determination module is used to read the echo signal;

[0092] Calculating the signal voltage average value of the echo signal at different transmission frequencies;

[0093] The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

[0094] Specifically, the system further includes:

[0095] The control module is used to issue a preset control decision when the electromagnetic wave adaptive frequency selection device is in a horizontal state.

[0096] It should be noted that, for the system embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The various units and modules of the electromagnetic wave adaptive frequency selection system are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of the units are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present invention.

[0097] The present disclosure also proposes an electromagnetic wave adaptive frequency selection device, which includes a main control unit, and the main control unit is used to implement any one of the electromagnetic wave adaptive frequency selection methods described.

[0098] Specifically, the device also includes a continuous wave signal source, a power amplifier, a transmitting antenna, a receiving antenna and a signal acquisition and processing unit;

[0099] The continuous wave signal source is used to receive the sweep frequency transmission control decision and the optimal working control decision, and output the corresponding pulse trigger signal;

[0100] The power amplifier is used to amplify the pulse trigger signal;

[0101] The transmitting antenna is used to receive the amplified pulse trigger signal and execute the sweep frequency transmission control decision or the optimal working control decision;

[0102] The receiving antenna is used to receive the echo signal;

[0103] The signal acquisition and processing unit is used to acquire the echo signal and send the echo signal to the main control unit.

[0104] Specifically, the device also includes a pulse signal source and a time domain control switch;

[0105] The pulse signal source is connected to the main control unit and receives a pulse control instruction issued by the main control unit;

[0106] The time domain control switch is arranged between the continuous wave signal source and the power amplifier, and the control switch performs a switching action according to the output of the pulse signal source.

[0107] like Figure 4 As shown, the electromagnetic wave adaptive frequency selection device mainly includes a main control unit, a continuous wave signal source, a time domain control switch, a power amplifier and a pulse signal source;

[0108] Main control unit: It is composed of ARM and FPGA. Its main functions are: reading the voltage amplitude value of the direct wave signal obtained by the signal sampling and processing unit; making control decisions on the actual transmission frequency of the continuous wave signal source; and controlling the pulse width and transmission time interval of the pulse signal source.

[0109] Continuous wave signal source: The output frequency is adjustable, and the frequency is above 100MHz.

[0110] Pulse signal source: The main control unit controls the pulse signal source to output a pulse trigger signal;

[0111] Time domain control switch: Use a pulse signal to trigger the switch to turn off, thereby modulating the continuous wave signal;

[0112] Power amplifier: amplifies the power of the single-frequency modulated pulse signal to ensure that the signal entering the transmitting antenna has sufficient transmission power.

[0113] The electromagnetic wave adaptive frequency selection device also includes a signal sampling and processing unit, a receiving antenna and a transmitting antenna;

[0114] Transmitting antenna: used to radiate high-frequency electromagnetic waves into the ground;

[0115] Receiving antenna: used to receive direct wave signals;

[0116] Signal sampling and processing unit: used to sample and process the received high-frequency electromagnetic waves.

[0117] like Figure 5 As shown, corresponding to the electromagnetic wave adaptive frequency selection method provided above, the present disclosure also provides an electromagnetic wave adaptive frequency selection device. Since the embodiment of the device is similar to the above method embodiment, the description is relatively simple. For relevant parts, please refer to the description of the above method embodiment part. The device described below is only schematic. The device may include: a processor (processor) 1, a memory (memory) 2 and a communication bus (i.e., the above device bus) and a search engine, wherein the processor 1 and the memory 2 communicate with each other through the communication bus and communicate with the outside through the communication interface. The processor 1 can call the logic instructions in the memory 2 to execute the electromagnetic wave adaptive frequency selection method.

[0118] In addition, the logic instructions in the above-mentioned memory 2 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: a storage chip, a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, and other media that can store program codes.

[0119] On the other hand, an embodiment of the present disclosure further provides a processor-readable storage medium, on which a computer program 3 is stored. When the computer program 3 is executed by the processor 1, the electromagnetic wave adaptive frequency selection method provided in the above embodiments is implemented.

[0120] The processor-readable storage medium can be any available medium or data storage device that can be accessed by the processor 1, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NANDFLASH), solid-state drive (SSD)), etc.

[0121] Those skilled in the art should understand that although the present disclosure is described in detail with reference to the aforementioned embodiments, it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An electromagnetic wave adaptive frequency selection method, applied to an electromagnetic wave adaptive frequency selection device, characterized in that: The method comprises: Receive the start command and issue the sweep frequency transmission control decision; Reading an echo signal, and determining an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision; An optimal working control decision is issued according to the optimal working frequency; the optimal working decision is used to guide the working content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

2. The electromagnetic wave adaptive frequency selection method according to claim 1, characterized in that: The sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

3. The electromagnetic wave adaptive frequency selection method according to claim 2, characterized in that: The preset frequency range is 400 MHz-600 MHz, and the preset step difference is 10 MHz.

4. The electromagnetic wave adaptive frequency selection method according to claim 2, characterized in that: The swept frequency transmission comprises: According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

5. The electromagnetic wave adaptive frequency selection method according to claim 1, characterized in that: Reading the echo signal and determining the optimal operating frequency according to the echo signal, including: reading the echo signal; Calculating the signal voltage average value of the echo signal at different transmission frequencies; The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

6. The electromagnetic wave adaptive frequency selection method according to claim 1, characterized in that: The method further comprises: When the electromagnetic wave adaptive frequency selection device is in a horizontal state, a preset control decision is issued; The preset control decision is to emit high-frequency electromagnetic waves according to a preset pulse width signal.

7. An electromagnetic wave adaptive frequency selection system, characterized in that: The system comprises: The first transmitting module is used to receive a start instruction and issue a sweep frequency transmitting control decision; A determination module, used to read an echo signal and determine an optimal operating frequency according to the echo signal; the echo signal is a result returned by the electromagnetic wave emitted according to the sweep frequency emission control decision; An execution module issues an optimal work control decision according to the optimal working frequency; the optimal work decision is used to guide the work content executed by the electromagnetic wave adaptive frequency selection device under the current underlying environment.

8. The electromagnetic wave adaptive frequency selection system according to claim 7, characterized in that: The sweep frequency transmission control decision is: within a preset frequency range, sweep frequency transmission is performed according to a preset step difference.

9. The electromagnetic wave adaptive frequency selection system according to claim 7, characterized in that: The swept frequency transmission comprises: According to the preset unit duration and transmission interval, high-frequency electromagnetic waves are emitted intermittently until the number of transmissions reaches the threshold.

10. The electromagnetic wave adaptive frequency selection system according to claim 7, characterized in that: The determination module is used to read the echo signal and determine the optimal operating frequency according to the echo signal, including: The determination module is used to read the echo signal; Calculating the signal voltage average value of the echo signal at different transmission frequencies; The transmission frequency corresponding to the time when the average value of the signal voltage is the highest is determined as the optimal operating frequency.

11. The electromagnetic wave adaptive frequency selection system according to claim 7, characterized in that: The system further comprises: The control module is used to issue a preset control decision when the electromagnetic wave adaptive frequency selection device is in a horizontal state.

12. An electromagnetic wave adaptive frequency selection device, characterized in that: The device comprises a main control unit, and the main control unit is used to implement the electromagnetic wave adaptive frequency selection method according to any one of claims 1-6.

13. The electromagnetic wave adaptive frequency selection device according to claim 12, characterized in that: The device also includes a continuous wave signal source, a power amplifier, a transmitting antenna, a receiving antenna and a signal acquisition and processing unit; The continuous wave signal source is used to receive the sweep frequency transmission control decision and the optimal working control decision, and output the corresponding pulse trigger signal; The power amplifier is used to amplify the pulse trigger signal; The transmitting antenna is used to receive the amplified pulse trigger signal and execute the sweep frequency transmission control decision or the optimal working control decision; The receiving antenna is used to receive the echo signal; The signal acquisition and processing unit is used to acquire the echo signal and send the echo signal to the main control unit.

14. The electromagnetic wave adaptive frequency selection device according to claim 13, characterized in that: The device also includes a pulse signal source and a time domain control switch; The pulse signal source is connected to the main control unit and receives a pulse control instruction issued by the main control unit; The time domain control switch is arranged between the continuous wave signal source and the power amplifier, and the control switch performs a switching action according to the output of the pulse signal source.

15. An electromagnetic wave adaptive frequency selection device, characterized in that: include: Processor and memory; The processor calls the computer program stored in the memory to execute the electromagnetic wave adaptive frequency selection method according to any one of claims 1 to 6.

16. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor is enabled to execute the electromagnetic wave adaptive frequency selection method according to any one of claims 1 to 6.

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