Intelligent drill rod communication method, system and equipment based on VMSK (Very Minimum Shift Keying) and medium

Abstract

The invention relates to an intelligent drill rod communication method, system and equipment based on VMSK, and a medium. The method comprises the following steps: carrying out VMSK modulation on input data according to a preset modulation index; after the VMSK modulation signal is converted into a magnetic signal at the sending end, the magnetic signal is sent to the receiving end through an intelligent drill rod channel, and the receiving end converts the received magnetic signal into an electric signal; and carrying out VMSK demodulation on the electric signal to obtain original input data. The input signal is modulated in a VMSK modulation mode, one-bit information is represented by one carrier period in combination with the channel characteristics of the intelligent drill rod, the digital communication frequency of 500 kHz is achieved, and the method can be widely applied to the field of intelligent drill rod communication.

Description

Technical Field

[0001] The present invention relates to an intelligent drill pipe communication method, system, device and medium based on VMSK (Very Minimum Shifting Keying), and belongs to the field of intelligent drill pipe communication. Background Art

[0002] With the evolution of modern oil drilling methods towards informatization, automation and intelligence, higher requirements are put forward for the real-time transmission efficiency of geological steering parameters (including formation resistivity, gamma ray intensity, well inclination azimuth, etc.) collected by downhole measuring instruments. The current mainstream measurement while drilling (MWD) systems adopt electromagnetic wave transmission or mud pulse transmission methods, and their theoretical channel capacity is limited by the formation attenuation effect and the impedance characteristics of drilling fluid. The actual effective transmission rate is generally lower than 15 bit / s, making it difficult to meet the data transmission rate requirements for high-precision geological steering and real-time decision-making. The networked intelligent drill pipe system developed by NOV Company in the United States constructs a high-speed downhole communication link through electromagnetic induction coupling method, and can achieve a stable transmission rate of 56 kbps under ideal working conditions, alleviating the data transmission bottleneck to a certain extent.

[0003] Existing intelligent drill pipe systems usually realize signal transmission based on the magnetic induction coupling channel at the resonant frequency point, and its digital transmission rate is positively correlated with the resonant frequency. According to the electromagnetic coupling theory, the resonant frequency formula is as follows:

[0004] In the formula, C is the stray capacitance, L is the mutual inductance of the two induction coils at the drill pipe joint, L The value of L is determined by the wire diameter and number of turns of the induction coil. The larger the f value, the higher the coupling efficiency of the signal, but the L resonant frequency L will be lower, that is, the communication rate will be lower. To increase the resonant frequency, the inductance

[0005] needs to be reduced, but the reduction of the inductance L will directly weaken the magnetic coupling coefficient, resulting in an exponential decay of the signal transmission efficiency between drill pipe nodes, thereby limiting the effective communication link length.

[0005] With current communication mechanisms such as frequency modulation, phase modulation, and amplitude modulation, generally 10 carriers are required to represent 1 information bit "0" or "1", so the actual communication rate is only 50 - 250 kHz. If 50 drill pipes are continuously transmitted, the highest communication rate is about 50 kHz. Although this rate has far exceeded other communication methods, with the rapid development and popularization of various complex structure wells and special process wells, and the data transmission requirements for more geological information such as downhole imaging, the transmission rate of intelligent drill pipes still needs to be further improved. Summary of the Invention

[0006] In view of the above problems, the objective of the present invention is to provide an intelligent drill pipe communication method and system based on VMSK. Considering the channel characteristics of the intelligent drill pipe, the VMSK method is used to modulate carrier waveforms with different positive and negative half-cycles, and information 0 and 1 are distinguished thereby. One carrier period represents one bit of information, effectively improving the communication rate.

[0007] To achieve the above objective, the present invention adopts the following technical solutions: In a first aspect, the present invention provides an intelligent drill pipe communication method based on VMSK, including the following steps: Perform VMSK modulation on the input data according to a predetermined modulation index; At the sending end, convert the VMSK modulation signal into a magnetic signal and send the magnetic signal to the receiving end through the intelligent drill pipe channel, and the receiving end converts the received magnetic signal into an electrical signal; After performing VMSK demodulation on the electrical signal, obtain the original input data.

[0008] Further, the performing VMSK modulation on the input data according to a predetermined modulation index includes: Use a function defined in the interval [0, T] respectively and to represent information bits "0" and "1"; Among them, the information bit "0" is defined as:

[0009] The information bit "1" is defined as:

[0010] Among them, T is the information bit interval, a is the modulation index, and its value range is 0 to 1; Based on the defined information bit functions, modulate the input data to obtain a VMSK modulation signal.

[0011] Further, the modulation index a is set to 0.8, the modulation waveform is a VMSK standard signal, the positive and negative half-cycle times of the information bit "0" are 800 ns and 1200 ns respectively, with a difference of -400 ns and a ratio of 4:6; the positive and negative half-cycle times of the information bit "1" are 1200 ns and 800 ns respectively, with a difference of 400 ns and a ratio of 6:4.

[0012] Further, the process of converting the VMSK modulation signal into a magnetic signal at the sending end, transmitting the magnetic signal through the intelligent drill pipe channel to the receiving end, and converting the received magnetic signal into an electrical signal at the receiving end includes: Amplify the VMSK modulation signal using a power amplifier and then transmit it to the induction coil at the sending end; The induction coil at the sending end generates a magnetic signal according to the VMSK modulation signal, and couples it to the magnetic coupler at the next drill pipe joint of the intelligent drill pipe channel through a magnetic coupler in sequence; After the magnetic coupler at the receiving end receives the magnetic signal, it is converted into an electrical signal using the induction coil at the receiving end.

[0013] Further, the resonant frequency of the induction coil at the sending end and the induction coil at the receiving end with respect to the intelligent drill pipe channel is 500 kHz, and the length of the intelligent drill pipe channel is 50 drill pipes.

[0014] Further, after performing VMSK demodulation on the electrical signal, the original input data is obtained, including: Process the electrical signal converted by the induction coil at the receiving end using a zero-crossing comparator to convert the VMSK modulation signal waveform into a square wave; Perform VMSK demodulation on the square wave signal output by the zero-crossing comparator to obtain the original input data.

[0015] Further, for the square wave signal output by the zero-crossing comparator, the positive and negative half-cycle times of the information bit "0" are 970 ns and 1030 ns respectively, and the time difference between the positive and negative half-cycles is -60 ns; the positive and negative half-cycle times of the information bit "1" are 1015 ns and 985 ns respectively, and the time difference between the positive and negative half-cycles is 30 ns.

[0016] In a second aspect, the present invention provides an intelligent drill pipe communication system based on VMSK, including: A modulation module for performing VMSK modulation on input data according to a predetermined modulation index; A transmission module for converting the VMSK modulation signal into a magnetic signal and transmitting the magnetic signal to the receiving end through the intelligent drill pipe channel, and converting the received magnetic signal into an electrical signal at the receiving end; A demodulation module for performing VMSK demodulation on the electrical signal to obtain the original input data.

[0017] In a third aspect, the present invention provides a computer-readable storage medium storing one or more programs, where the one or more programs include instructions that, when executed by a computing device, cause the computing device to execute any of the methods.

[0018] Fourthly, the present invention provides a computing device, comprising: one or more processors and a memory, wherein one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include instructions for executing any of the methods.

[0019] Due to the above technical solutions adopted by the present invention, it has the following advantages: 1. The present invention uses the VMSK modulation method to modulate the input signal. Combining with the channel characteristics of the intelligent drill pipe, one bit of information is represented by one carrier period, realizing a digital communication frequency of 500 kHz. Such a communication scheme can not only ensure long-distance signal transmission of the intelligent drill pipe but also ensure a high communication rate.

[0020] 2. The present invention realizes non-contact transmission of signals from one drill pipe to the next without electrical connection. Then the signal is transmitted to the joint at the other end of the drill pipe through a signal line and is also transmitted to the next drill pipe in a non-contact manner, finally realizing step-by-step transmission of the signal along the drill pipe.

[0021] Therefore, the present invention can be widely applied to the field of intelligent drill pipe communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference numerals are used to represent the same components. In the drawings: Figure 1 is a block diagram of the system of the intelligent drill pipe communication method based on VMSK provided in the embodiment of the present invention; Figure 2 is a channel characteristic diagram of the intelligent drill pipe provided in the embodiment of the present invention; Figure 3 is the modulation waveform of the VMSK signal under different modulation indices provided in the embodiment of the present invention; Figure 4 is the spectrum diagram of the VMSK signal under different modulation indices provided in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the protection scope of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Professor Wu Lenan and others from Southeast University in China have conducted in-depth research on VMSK and found that this modulation can represent one bit of information with one cycle of waveform. The information bit interval T, that is, the width of 1 bit of information, is fixed; and f = 1 / T is the bit rate of information transmission and also the carrier frequency of the signal. Compared with other carrier methods that use more than a dozen or even dozens of waveform cycles to represent one bit of information, the data transmission speed is greatly improved.

[0026] Based on this, in some embodiments of the present invention, there is provided an intelligent drill pipe communication method based on VMSK, which relates to the field of intelligent drill pipe communication. The method includes: performing VMSK modulation on the input data according to a predetermined modulation index; converting the VMSK modulation signal into a magnetic signal at the sending end and sending the magnetic signal through the intelligent drill pipe channel to the receiving end, and converting the received magnetic signal into an electrical signal by the receiving end; after performing VMSK demodulation on the electrical signal, obtaining the original input data. The intelligent drill pipe communication method based on VMSK adopted by the present invention can not only ensure long-distance signal transmission of the intelligent drill pipe but also ensure a high communication rate.

[0027] Correspondingly, in some other embodiments of the present invention, there is provided an intelligent drill pipe communication system, device, and medium based on VMSK.

[0028] Embodiment 1 As Figure 1 shown, this embodiment provides an intelligent drill pipe communication method based on VMSK, which includes the following steps: 1) Performing VMSK modulation on the input data according to a predetermined modulation index; 2) Converting the VMSK modulation signal into a magnetic signal at the sending end and sending the magnetic signal through the intelligent drill pipe channel to the receiving end, and converting the received magnetic signal into an electrical signal by the receiving end; 3) After performing VMSK demodulation on the electrical signal, obtaining the original input data.

[0029] Further, in the above step 1), performing VMSK modulation on the input data according to a predetermined modulation index includes: 1.1) Using a function defined in the interval [0, T] respectively and Represent the information bits "0" and "1".

[0030] Among them, the information bit "0" is defined as:

[0031] The information bit "1" is defined as:

[0032] Among them, T is the information bit interval (period), a is the modulation index, and its value range is 0 to 1. a When it changes, the time ratio and amplitude of the positive and negative half - cycles of different information bits will change.

[0033] 1.2) Modulate the input data based on the defined information bit function to obtain the VMSK modulation signal.

[0034] After modulating the input data, convert the information bit "0" into

[0035] Convert the information bit "1" into .

[0036] Furthermore, in step 1) above, considering that the intelligent drill pipe channel is a single transmission frequency point and taking into account the two factors of demodulation difficulty and signal loss, in this embodiment, the modulation index a is set to 0.8, the modulation waveform is the VMSK standard signal. The positive and negative half - cycle times of the information bit "0" are 800 ns and 1200 ns respectively, with a difference of - 400 ns and a ratio of 4:6; the positive and negative half - cycle times of the information bit "1" are 1200 ns and 800 ns respectively, with a difference of 400 ns and a ratio of 6:4.

[0037] At this time, the information bit "0" is defined as:

[0038] The information bit "1" is defined as:

[0039] To facilitate waveform capture, the normal state of the channel is always the information bit 1. The start bit of the communication data is the information bit 0, followed by 1 byte which is 10101010, and then the channel returns to the state of always being the information bit 1.

[0040] Furthermore, in step 1.2) above, at the sending end, convert the VMSK modulation signal into a magnetic signal and send it through the intelligent drill pipe channel, and send the magnetic signal to the receiving end, and the receiving end converts the received magnetic signal into an electrical signal, including: 1.2.1) Amplify the VMSK modulated signal using a power amplifier and then transmit it to the induction coil at the sending end to compensate for the attenuation caused by the non-contact transmission of the signal between drill pipes. 1.2.2) The induction coil at the sending end generates a magnetic signal according to the VMSK modulated signal and couples it to the magnetic coupler at the joint of the next drill pipe section through a magnetic coupler in sequence. 1.2.3) After the magnetic coupler at the receiving end receives the magnetic signal, it is converted into an electrical signal using the induction coil at the receiving end.

[0041] Further, in step 1.2) above, the resonant frequency of the intelligent drill pipe channel for the induction coil at the sending end and the induction coil at the receiving end is 500 kHz, and the length of the intelligent drill pipe channel is 50 drill pipe sections.

[0042] Further, in step 3) above, after VMSK demodulation of the electrical signal, the original input data is obtained, including: 3.1) Process the electrical signal converted by the induction coil at the receiving end using a zero-crossing comparator to convert the VMSK modulated signal waveform into a square wave for convenient subsequent demodulation. 3.2) Perform VMSK demodulation on the square wave signal output by the zero-crossing comparator to obtain the original input data.

[0043] Further, in step 3.1) above, for the square wave signal output by the zero-crossing comparator, the positive and negative half-cycle times of the information bit "0" are approximately 970 ns and 1030 ns respectively, and the time difference between the positive and negative half-cycles is approximately -60 ns; the positive and negative half-cycle times of the information bit "1" are approximately 1015 ns and 985 ns respectively, and the time difference between the positive and negative half-cycles is approximately 30 ns.

[0044] As Figure 2 shown, for the characteristics of the intelligent drill pipe transmission channel, the resonant point of the channel is equivalent to a narrowband filter, and most of the harmonic components in the input signal waveform are filtered out, only the fundamental frequency of 500 kHz is retained, resulting in an obvious change in the received waveform compared with the transmitted waveform. The time difference between the positive and negative half-cycles becomes only a few tens of ns, but as long as the demodulation method is reasonable, the information bits "0" and "1" can still be accurately demodulated.

[0045] As Figure 3 shown, for the VMSK signal waveforms under different modulation indices. First, the selection of the modulation index should consider the demodulation difficulty. The smaller the modulation index, the greater the difference between the "0" and "1" information bits, and the easier it is to demodulate. The larger the modulation index, that is, the closer it is to 1, the closer the waveform is to the standard sine wave, and the smaller the waveform difference between the "0" and "1" information bits, and it is not easy to demodulate. When the communication frequency point f is at a high frequency, it is even more difficult.

[0046] As Figure 4 shown, the selection of the modulation index also needs to consider the transmission loss. The smaller the modulation index, the more dispersed the spectrum, and the larger the modulation index, the more concentrated the spectrum. Due to the channel characteristics of the intelligent drill pipe as Figure 2 shown, which is a single transmission frequency point, it is expected that the larger the modulation index, the smaller the signal loss. Considering comprehensively, the modulation index is selected as 0.8.

[0047] Among them, for the signal at the output end of the zero-crossing comparator, the positive and negative half-cycle lengths of the information bit "0" represented by the output square wave are approximately 970 ns and 1030 ns respectively, and the time difference between the positive and negative half-cycles is approximately -60 ns; the positive and negative half-cycle lengths of the information bit "1" are approximately 1015 ns and 985 ns respectively, and the time difference between the positive and negative half-cycles is approximately 30 ns.

[0048] The time difference between the positive and negative half-cycles becomes only dozens of ns, but as long as the demodulation means is reasonable, the information bits "0" and "1" can still be accurately demodulated.

[0049] The present invention can achieve non-contact transmission of signals from one drill pipe to the next without electrical connection. Then, the signal is transmitted to the joint at the other end of the drill pipe through a signal line and is also transmitted to the next drill pipe in a non-contact manner, finally realizing the step-by-step transmission of the signal along the drill pipe. This method combines the channel characteristics of the intelligent drill pipe and uses one carrier cycle to represent one bit of information, achieving a digital communication frequency of 500 kHz. Such a communication scheme can not only ensure long-distance signal transmission of the intelligent drill pipe but also ensure a high communication rate.

[0050] Embodiment 2 The above Embodiment 1 provides an intelligent drill pipe communication method based on VMSK. Correspondingly, this embodiment provides an intelligent drill pipe communication system based on VMSK. The system provided in this embodiment can implement the intelligent drill pipe communication method based on VMSK in Embodiment 1, and this system can be implemented in a software, hardware, or software-hardware combination manner. For example, the system can include integrated or separate functional modules or functional units to execute the corresponding steps in each method of Embodiment 1. Since the system in this embodiment is basically similar to the method embodiment, the description process in this embodiment is relatively simple, and the relevant parts can refer to the partial description of Embodiment 1. The embodiment of the system provided in this embodiment is only illustrative.

[0051] The intelligent drill pipe communication system based on VMSK provided in this embodiment includes: A modulation module, configured to perform VMSK modulation on the input data according to a predetermined modulation index; A transmission module, configured to convert the VMSK modulation signal into a magnetic signal and send the magnetic signal to the receiving end through the intelligent drill pipe channel, and the receiving end converts the received magnetic signal into an electrical signal; A demodulation module for performing VMSK demodulation on an electrical signal to obtain original input data.

[0052] Further, the transmission module includes: A power amplifier module for amplifying the VMSK modulation signal to compensate for signal attenuation caused by non-contact signal transmission between drill pipes; A transmitting end induction coil module for converting an electrical signal into a magnetic signal and sequentially coupling it to the magnetic coupler at the joint of the next drill pipe through a magnetic coupler; A receiving end induction coil module for converting the magnetic field signal passing through the transmission channel into an electrical signal, thereby realizing non-contact transmission of signals from the upper drill pipe to the lower drill pipe without electrical connection.

[0053] Further, the demodulation module includes: A zero-crossing comparator module for converting the electrical signal waveform of the receiving end induction coil into a square wave for subsequent demodulation; A VMSK demodulation module for collecting the square wave signal generated by the zero-crossing comparator, resolving the positive and negative half-cycle lengths thereof, and restoring the original signal.

[0054] Embodiment 3 This embodiment provides a processing device corresponding to the VMSK-based intelligent drill pipe communication method provided in Embodiment 1. The processing device can be a processing device for a client, such as a mobile phone, a laptop computer, a tablet computer, a desktop computer, etc., to execute the method of Embodiment 1.

[0055] The processing device includes a processor, a memory, a communication interface, and a bus. The processor, the memory, and the communication interface are connected through the bus to complete mutual communication. A computer program that can run on the processor is stored in the memory. When the processor runs the computer program, it executes the VMSK-based intelligent drill pipe communication method provided in Embodiment 1.

[0056] Preferably, the memory can be a high-speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory, such as at least one disk memory.

[0057] Preferably, the processor can be various types of general-purpose processors such as a central processing unit (CPU), a digital signal processor (DSP), etc., which are not limited herein.

[0058] Embodiment 4 The intelligent drill pipe communication method based on VMSK in this Embodiment 1 can be specifically implemented as a computer program product. The computer program product may include a computer-readable storage medium, on which computer-readable program instructions for executing the intelligent drill pipe communication method based on VMSK described in this Embodiment 1 are uploaded.

[0059] The computer-readable storage medium can be a tangible device that holds and stores instructions used by an instruction execution device. The computer-readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any combination of the above.

[0060] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present invention. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks. These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks. These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are performed on the computer or other programmable device to generate a computer-implemented process. Thus, the instructions executed on the computer or other programmable device provide means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1Steps of the functions specified in one or more boxes.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements can still be made to the specific implementation manners of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. An intelligent drill pipe communication method based on VMSK, characterized in that, It includes the following steps: Perform VMSK modulation on the input data according to a predetermined modulation index; At the sending end, convert the VMSK modulation signal into a magnetic signal, and then send the magnetic signal to the receiving end through the intelligent drill pipe channel, and the receiving end converts the received magnetic signal into an electrical signal; After performing VMSK demodulation on the electrical signal, obtain the original input data.

2. The intelligent drill pipe communication method based on VMSK according to claim 1, characterized in that, The performing VMSK modulation on the input data according to a predetermined modulation index includes: Use a function defined on the interval [0, T] respectively and to represent the information bits "0" and "1"; Among them, the information bit "0" is defined as: The information bit "1" is defined as: where T is the information bit interval, a is the modulation index, and its value range is 0 to 1; Modulate the input data based on the defined information bit function to obtain a VMSK modulation signal.

3. The intelligent drill pipe communication method based on VMSK according to claim 2, wherein, The modulation index a is set to 0.8, the modulation waveform is a VMSK standard signal, the positive and negative half-cycle times of the information bit "0" are 800 ns and 1200 ns respectively, with a difference of -400 ns and a ratio of 4:6; the positive and negative half-cycle times of the information bit "1" are 1200 ns and 800 ns respectively, with a difference of 400 ns and a ratio of 6:

4.

4. The intelligent drill pipe communication method based on VMSK according to claim 2, wherein The converting the VMSK modulation signal into a magnetic signal at the sending end and then sending the magnetic signal to the receiving end through the intelligent drill pipe channel, and the receiving end converting the received magnetic signal into an electrical signal includes: Use a power amplifier to amplify the VMSK modulation signal and then transmit it to the sending end induction coil; The sending end induction coil generates a magnetic signal according to the VMSK modulation signal, and the magnetic signal is sequentially coupled to the magnetic coupler at the next drill pipe joint through the magnetic coupler; After the magnetic coupler at the receiving end receives the magnetic signal, it is converted into an electrical signal by the receiving end induction coil.

5. The intelligent drill pipe communication method based on VMSK according to claim 4, wherein The resonant frequency of the sending end induction coil and the receiving end induction coil for the intelligent drill pipe channel is 500 kHz, and the length of the intelligent drill pipe channel is 50 drill pipes.

6. The intelligent drill pipe communication method based on VMSK according to claim 4, characterized in that The obtaining the original input data after performing VMSK demodulation on the electrical signal includes: Use a zero-crossing comparator to process the electrical signal converted by the receiving end induction coil, and convert the VMSK modulation signal waveform into a square wave; Perform VMSK demodulation on the square wave signal output by the zero-crossing comparator to obtain the original input data.

7. The intelligent drill pipe communication method based on VMSK according to claim 6, characterized in that, For the square wave signal output by the zero-crossing comparator, the positive and negative half-cycle times of the information bit "0" are 970 ns and 1030 ns respectively, and the time difference between the positive and negative half-cycles is -60 ns; the positive and negative half-cycle times of the information bit "1" are 1015 ns and 985 ns respectively, and the time difference between the positive and negative half-cycles is 30 ns.

8. An intelligent drill pipe communication system based on VMSK, characterized in that, It includes: A modulation module for performing VMSK modulation on the input data according to a predetermined modulation index; A transmission module for converting the VMSK modulation signal into a magnetic signal and then sending the magnetic signal to the receiving end through the intelligent drill pipe channel, and the receiving end converting the received magnetic signal into an electrical signal; A demodulation module for performing VMSK demodulation on the electrical signal to obtain the original input data.

9. A computer-readable storage medium storing one or more programs, characterized in that, The one or more programs include instructions that, when executed by a computing device, cause the computing device to execute any one of the methods described in claims 1 to 7.

10. A computing device, characterized in that, It includes: One or more processors and a memory, where the memory stores one or more programs and is configured to be executed by the one or more processors, and the one or more programs include instructions for executing any one of the methods described in claims 1 to 7.

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