CN-121984603-A - Acoustic wave communication method and system, and acoustic wave signal generating and receiving device

CN121984603ACN 121984603 ACN121984603 ACN 121984603ACN-121984603-A

Abstract

The application relates to the field of oil and gas exploration, in particular to an acoustic wave communication method and system and an acoustic wave signal generating and receiving device. The method comprises the steps of obtaining communication data of a sending end, performing binary coding on the communication data of the sending end to obtain code element data of the sending end, obtaining a pseudo-random code of the sending end corresponding to the code element data of the sending end based on a set corresponding relation for any code element data of the sending end, modulating fundamental wave signals based on the pseudo-random code of the sending end to obtain communication signals, and sending out sound wave signals of the sending end based on the communication signals. The sound wave communication method and system and the sound wave signal generating and receiving device provided by the application can realize the technical effects of reducing the sound wave signal error rate and improving the sound wave communication quality and the accuracy of communication results.

Inventors

LI LEI
KE LING
LUO MINGZHANG
ZHOU LUOYU
LI XUN
ZHANG ZHENGBING

Assignees

长江大学

Dates

Publication Date: 20260505
Application Date: 20260113

Claims (10)

1. An acoustic wave communication method, characterized by being applied to an acoustic wave signal generating device, comprising: acquiring communication data of a transmitting end, and performing binary coding on the communication data of the transmitting end to obtain code element data of the transmitting end; For any transmitting end code element data, acquiring a transmitting end pseudo-random code corresponding to the transmitting end code element data based on a set corresponding relation, wherein the set corresponding relation comprises a plurality of set code elements and a plurality of set pseudo-random codes, and the set pseudo-random codes are binary codes with anti-interference performance meeting set conditions; and modulating the fundamental wave signal based on the pseudo-random code of the transmitting end to obtain a communication signal, and transmitting a sound wave signal of the transmitting end based on the communication signal.
2. The acoustic wave communication method according to claim 1, characterized by further comprising: providing a plurality of candidate pseudo-random codes, and calculating anti-interference performance parameters of each candidate pseudo-random code, wherein the anti-interference performance parameters comprise at least one of autocorrelation parameters, randomness parameters and orthogonality parameters; And selecting the candidate pseudo-random codes with a plurality of bits before the ranking of the anti-interference performance parameters as the set pseudo-random codes.
3. The acoustic wave communication method of claim 2 wherein the interference performance parameters include the autocorrelation parameters, and wherein the calculating the interference performance parameters for each of the candidate pseudorandom codes includes: and respectively calculating the main side lobe ratio of each candidate pseudo-random code as the autocorrelation parameter.
4. The acoustic wave communication method of claim 2 wherein the interference performance parameters include the autocorrelation parameters, and wherein the calculating the interference performance parameters for each of the candidate pseudorandom codes includes: and performing anti-interference analysis on each candidate pseudo random code from multiple dimensions based on a CRM method, and acquiring a data analysis result output by the CRM method as the anti-interference performance parameter, wherein the multiple dimensions comprise at least two of a balance dimension, a run characteristic dimension, an autocorrelation dimension and a complexity dimension.
5. The acoustic wave communication method of claim 2 wherein the interference performance parameters include the orthogonality parameters, and wherein the calculating the interference performance parameters for each of the candidate pseudorandom codes includes: And for any candidate pseudo-random code, respectively carrying out orthogonality test on the candidate pseudo-random code and other candidate pseudo-random codes to obtain cross-correlation values between the candidate pseudo-random code and the other candidate pseudo-random codes, and taking the cross-correlation average value of all the cross-correlation values of the candidate pseudo-random codes as the anti-interference performance parameter.
6. An acoustic wave signal generating apparatus, comprising: The data coding module is used for acquiring communication data of a transmitting end, and binary coding is carried out on the communication data of the transmitting end to obtain code element data of the transmitting end; The pseudo-random code determining module is used for acquiring a transmitting end pseudo-random code corresponding to the transmitting end code element data based on a set corresponding relation, wherein the set corresponding relation comprises a plurality of set code elements and a plurality of set pseudo-random codes, and the set pseudo-random codes are binary codes with anti-interference performance meeting set conditions; The sound wave signal generation module is used for modulating fundamental wave signals based on the pseudo-random codes of the transmitting end to obtain communication signals, and transmitting sound wave signals of the transmitting end based on the communication signals.
7. An acoustic wave communication method, characterized by being applied to an acoustic wave signal receiving apparatus, comprising: Acquiring a receiving end acoustic wave signal, and demodulating the receiving end acoustic wave signal to obtain demodulation data; Decoding the demodulation data based on the set pseudo-random code to obtain a receiving end pseudo-random code; and binary decoding is carried out on the pseudo-random code of the receiving end, so that communication data of the receiving end is obtained.
8. The acoustic wave communication method according to claim 7, further comprising: acquiring communication data of a transmitting end, and training a neural network model by using the communication data of the transmitting end, the communication data of the receiving end and the acoustic wave signals of the receiving end until the training of the neural network model is completed; And carrying out signal processing on the sound wave signal of the receiving end based on the trained neural network model to obtain the pseudo-random code of the receiving end.
9. An acoustic wave signal receiving apparatus, comprising: The sound wave signal acquisition module is used for acquiring sound wave signals of the receiving end; the demodulation module is used for demodulating the sound wave signal of the receiving end to obtain demodulation data; the first decoding module is used for decoding the demodulation data based on the set pseudo-random code to obtain a receiving end pseudo-random code; and the second decoding module is used for binary decoding the pseudo-random code of the receiving end to obtain communication data of the receiving end.
10. An acoustic wave communication system, comprising: Data measuring means, an acoustic wave signal generating means as claimed in claim 6 and an acoustic wave signal receiving means as claimed in claim 9; The data measuring device collects communication data of a transmitting end to be transmitted, the sound wave signal generating device executes the sound wave communication method according to any one of claims 1 to 5 to send sound wave signals of the transmitting end based on the communication data of the transmitting end, the sound wave signal receiving device executes the sound wave communication method according to any one of claims 7 to 8 to collect the sound wave signals to obtain sound wave signals of a receiving end, and the sound wave signals of the receiving end are demodulated to obtain communication data of the receiving end.

Description

Acoustic wave communication method and system, and acoustic wave signal generating and receiving device Technical Field The application relates to the field of oil and gas exploration, in particular to an acoustic wave communication method and system and an acoustic wave signal generating and receiving device. Background In oil and gas exploration, stable return of downhole data is always a technical difficulty. The traditional path is mainly composed of electromagnetic waves and a wired cable, wherein the transmission is realized by means of the penetration of low-frequency electromagnetic waves in a stratum, but the available bandwidth is very narrow, the speed is very low than 100 bit/s, the requirement of large data volume for real-time monitoring of multiple parameters such as temperature, pressure and flow is difficult to bear, and meanwhile, the underground metal sleeve is obviously shielded on high-frequency components, so that signal attenuation is aggravated. The latter has the hidden troubles of high layout cost, mechanical damage, fluid corrosion and the like although the link is relatively stable, and the reliability is obviously reduced in deep well/ultra-deep well scenes. In recent years, acoustic communication has become a research hotspot for a cableless solution because of its ability to propagate along pipe walls/fluids. The existing practice mostly adopts narrow-band modulation and uses single-frequency sound waves to bear data. However, the underground environment is complex, the metal pipeline structure causes strong multipath effect, the rock stratum and the non-uniform medium cause scattering, and equipment such as a pump valve and the like generate broadband mechanical noise, so that acoustic signals in acoustic communication have serious waveform distortion, high demodulation failure rate and low communication quality in the transmission process. Disclosure of Invention In view of the foregoing, it is necessary to provide an acoustic wave communication method and system, and an acoustic wave signal generating and receiving device, so as to achieve the technical effects of reducing the error rate of the acoustic wave signal and improving the quality of acoustic wave communication and the accuracy of the communication result. In order to solve the above technical problem, in a first aspect, the present application provides an acoustic wave communication method, which is applied to an acoustic wave signal generating device, the acoustic wave communication method including: acquiring communication data of a transmitting end, and performing binary coding on the communication data of the transmitting end to obtain code element data of the transmitting end; For any transmitting end code element data, acquiring a transmitting end pseudo-random code corresponding to the transmitting end code element data based on a set corresponding relation, wherein the set corresponding relation comprises a plurality of set code elements and a plurality of set pseudo-random codes, and the set pseudo-random codes are binary codes with anti-interference performance meeting set conditions; and modulating the fundamental wave signal based on the pseudo-random code of the transmitting end to obtain a communication signal, and transmitting a sound wave signal of the transmitting end based on the communication signal. In one possible embodiment, the method further comprises: providing a plurality of candidate pseudo-random codes, and calculating anti-interference performance parameters of each candidate pseudo-random code, wherein the anti-interference performance parameters comprise at least one of autocorrelation parameters, randomness parameters and orthogonality parameters; And selecting the candidate pseudo-random codes with a plurality of bits before the ranking of the anti-interference performance parameters as the set pseudo-random codes. In a possible embodiment, the interference performance parameter includes the autocorrelation parameter, and the calculating the interference performance parameter of each of the candidate pseudo random codes includes: and respectively calculating the main side lobe ratio of each candidate pseudo-random code as the autocorrelation parameter. In a possible embodiment, the interference performance parameter includes the autocorrelation parameter, and the calculating the interference performance parameter of each of the candidate pseudo random codes includes: and performing anti-interference analysis on each candidate pseudo random code from multiple dimensions based on a CRM method, and acquiring a data analysis result output by the CRM method as the anti-interference performance parameter, wherein the multiple dimensions comprise at least two of a balance dimension, a run characteristic dimension, an autocorrelation dimension and a complexity dimension. In a possible embodiment, the interference performance parameter includes the orthogonality parameter, and the calculat