CN114944873A - Mine information acquisition method, device, equipment and storage medium - Google Patents
Mine information acquisition method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of optical fiber sensing, and discloses a mine information acquisition method, a mine information acquisition device, mine information acquisition equipment and a storage medium. The method comprises the following steps: acquiring voice sound wave signals sent by workers in a mine through the laid optical cables; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station; demodulating the received pulse optical signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents. The application realizes the efficient collection of the voice information in the mine.
Description
Technical Field
The invention relates to the technical field of optical fiber sensing, in particular to a mine information acquisition method, a mine information acquisition device, mine information acquisition equipment and a storage medium.
Background
Along with the development of economic society, the demand of people for various mineral resources is increased, so that the development and collection of various mineral resources are increased gradually. However, the phenomenon of personnel group death and group injury caused by frequent mine accidents due to the complicated underground natural geographic environment of the mine is still common. And after a serious mine accident happens, the conditions of power failure and network breaking, mine roadway collapse and road blockage and the like are often caused, and underground persons in danger cannot get in touch with rescue workers. In order to avoid the occurrence of related mine disaster events and ensure that the ground can timely know the conditions in the mine and communicate with trapped personnel after the mine disaster occurs, the related environmental information and personnel information in the mine need to be collected, and the information early warning and personnel information exchange of the mine are well done.
Most of the existing mining information communication and emergency rescue are based on an electric power system, relevant environment information is collected through various electric power devices, and a radio system is used for communicating with personnel in a mine, but when a power supply system is broken down due to the occurrence of partial accidents based on the information collection of electric power, the continuous collection of the relevant environment information and the collection of voice information of the personnel in the mine cannot be realized, and great difficulty is brought to the work of the relevant mine. Namely, the existing mine information acquisition method is easy to increase the acquisition difficulty due to accidents.
Disclosure of Invention
The invention mainly aims to solve the problem that the existing mine information acquisition method is easy to increase the acquisition difficulty due to accidents.
The invention provides a mine information acquisition method, which is applied to a mine information acquisition system, wherein the mine information acquisition system comprises a plurality of mutually connected laying optical cables and an optical sensing communication monitoring base station arranged at the end part of the laying optical cables, and the mine information acquisition method comprises the following steps: acquiring voice sound wave signals sent by workers in a mine through the laid optical cables; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station; demodulating the received pulse optical signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents.
Optionally, in a first implementation manner of the first aspect of the present invention, the signal parameters include a phase parameter and a frequency parameter, the modulated pulsed light signal includes a first pulsed light signal and a second pulsed light signal, and the signal parameters of the original pulsed light signal in the laid optical cable are optically strain-modulated based on the vibration state quantity to obtain the modulated pulsed light signal, including: performing optical phase modulation on the phase parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a first pulse optical signal; or, performing optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal.
Optionally, in a second implementation manner of the first aspect of the present invention, the optical sensing communication monitoring base station includes a plurality of sub optical sensing communication monitoring base stations and a total optical sensing communication monitoring base station, and the transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station includes: transmitting the modulated pulse optical signals to a sub-optical sensing communication monitoring base station connected with the end part of the laid optical cable; each sub-optical sensing communication monitoring base station performs signal integration on the received pulse optical signals according to preset unit time to obtain integrated pulse optical signals; and transmitting the integrated pulse optical signals integrated by the sub optical sensing communication monitoring base stations to a total optical sensing communication monitoring base station.
Optionally, in a third implementation manner of the first aspect of the present invention, each sub optical sensing communication monitoring base station performs signal integration on the received pulsed light signal according to a preset unit time, and obtaining an integrated pulsed light signal includes: each sub-optical sensing communication monitoring base station superposes the received pulse optical signals according to a preset unit time to obtain a single integrated pulse optical signal after distributed modulation; or, each sub-optical sensing communication monitoring base station multiplexes the received pulse optical signals according to a preset unit time to obtain the integrated pulse optical signals after sequence distributed modulation.
Optionally, in a fourth implementation manner of the first aspect of the present invention, the demodulating, by the optical sensing communication monitoring base station, the received pulsed optical signal to obtain corresponding data acquisition content includes: acquiring modulation signal parameters corresponding to the original pulse optical signals, and matching corresponding coherent demodulation strategies by using the modulation signal parameters; and carrying out backward coherent positioning on the received pulse light signals according to the coherent demodulation strategy to obtain the position of the voice sound wave signals, and carrying out signal extraction and voice conversion on the signals corresponding to the position of the voice sound wave signals to obtain corresponding data acquisition contents.
Optionally, in a fifth implementation manner of the first aspect of the present invention, the performing backward coherent positioning on the received pulsed light signal according to the coherent demodulation strategy to obtain a position of a voice sound wave signal includes: acquiring an incident pulse optical signal generated by the optical sensing communication monitoring base station; and carrying out light coherence and differential accumulation operation on the incident pulse light signal and the received pulse light signal to obtain the position of the voice sound wave signal.
Optionally, in a sixth implementation manner of the first aspect of the present invention, the information acquisition system of the mine further includes a plurality of information receiving terminals and a monitoring platform connected to the laid optical cable, and after the pushing the data acquisition content, the information acquisition system of the mine further includes: receiving feedback information returned by the monitoring platform through the optical sensing communication monitoring base station, and performing pulse modulation on the feedback information to obtain a feedback pulse optical signal; sending the fed back pulse light signals to each information receiving terminal through the laid optical cable; and demodulating the fed back pulse optical signals through the information receiving terminal to obtain data feedback contents in corresponding formats.
A second aspect of the present invention provides a mine information acquisition apparatus, including: the signal acquisition module is used for acquiring voice sound wave signals sent by workers in a mine through the laid optical cables; the information modulation module is used for analyzing the vibration state quantity of the voice sound wave signal, performing optical strain modulation on signal parameters of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station; and the information demodulation module is used for demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents and pushing the data acquisition contents.
Optionally, in a first implementation manner of the second aspect of the present invention, the information modulation module includes: the phase modulation unit is used for carrying out optical phase modulation on the phase parameters of the original pulse optical signals in the laid optical cable based on the vibration state quantity to obtain first pulse optical signals; and the frequency modulation unit is used for carrying out optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal.
Optionally, in a second implementation manner of the second aspect of the present invention, the information modulation module further includes: the transmission unit is used for transmitting the modulated pulse optical signals to a sub-optical sensing communication monitoring base station connected with the end part of the laid optical cable; the integrating unit is used for performing signal integration on the received pulse optical signals by each sub-optical sensing communication monitoring base station according to preset unit time to obtain integrated pulse optical signals; and the collecting unit is used for transmitting the integrated pulse optical signals integrated by the sub optical sensing communication monitoring base stations to the total optical sensing communication monitoring base station.
Optionally, in a third implementation manner of the second aspect of the present invention, the integration unit includes: each sub-optical sensing communication monitoring base station superposes the received pulse optical signals according to a preset unit time to obtain a single integrated pulse optical signal after distributed modulation; or, each sub-optical sensing communication monitoring base station multiplexes the received pulse optical signals according to a preset unit time to obtain the integrated pulse optical signals after sequence distributed modulation.
Optionally, in a fourth implementation manner of the second aspect of the present invention, the information demodulation module includes: the strategy matching unit is used for acquiring modulation signal parameters corresponding to the original pulse optical signals and matching corresponding coherent demodulation strategies by using the modulation signal parameters; and the data extraction unit is used for carrying out backward coherent positioning on the received pulse light signals according to the coherent demodulation strategy to obtain the position of the voice sound wave signals, and carrying out signal extraction and voice conversion on the signals corresponding to the position of the voice sound wave signals to obtain corresponding data acquisition contents.
Optionally, in a fifth implementation manner of the second aspect of the present invention, the data extraction unit includes: acquiring an incident pulse optical signal generated by the optical sensing communication monitoring base station; and carrying out light coherence and differential accumulation operation on the incident pulse light signals and the received pulse light signals to obtain the position of the voice sound wave signal.
Optionally, in a sixth implementation manner of the second aspect of the present invention, the mine information collecting device further includes an information feedback module, where the information feedback module includes: the feedback modulation unit is used for receiving feedback information returned by the monitoring platform through the optical sensing communication monitoring base station and carrying out pulse modulation on the feedback information to obtain a feedback pulse optical signal; a signal transmitting unit for transmitting the fed back pulse light signals to each of the information receiving terminals through the laid optical cable; and the feedback demodulation unit is used for demodulating the fed back pulse optical signals through the information receiving terminal to obtain data feedback contents in corresponding formats.
A third aspect of the present invention provides a mine information collecting apparatus, comprising: a memory and at least one processor, the memory having instructions stored therein; the at least one processor invokes the instructions in the memory to cause the mine information collection device to perform the steps of the mine information collection method described above.
A fourth aspect of the present invention provides a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the steps of the mine information acquisition method described above.
In the technical scheme provided by the invention, the voice sound wave signals sent by workers in a mine are obtained through the laid optical cables; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to an optical sensing communication monitoring base station; and demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents. Compared with the prior art, the optical cable strain modulation system has the advantages that related voice information is directly acquired through the optical cable to carry out strain modulation on the pulse optical signals, the modulated pulse optical signals are transmitted to the optical sensing communication monitoring base station, the transmitted pulse optical signals are demodulated, and information collected through the optical cable is obtained. The voice information collection and analysis in the mine under the condition of no electricity in the mine are realized when mine accidents occur, the collection efficiency of the related voice information in the mine is improved, and communication between the inside and the outside of the mine is ensured.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a mine information acquisition method in an embodiment of the invention;
FIG. 2 is a schematic diagram of an information acquisition system of a mine of the mine information acquisition method in the embodiment of the invention;
FIG. 3 is a schematic diagram of a second embodiment of a mine information collection method according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a third embodiment of a mine information acquisition method in an embodiment of the invention;
FIG. 5 is a schematic diagram of one embodiment of a mine information acquisition device in an embodiment of the invention;
FIG. 6 is a schematic diagram of another embodiment of a mine information acquisition device in an embodiment of the invention;
fig. 7 is a schematic diagram of an embodiment of mine information collection equipment in an embodiment of the invention.
Detailed Description
The embodiment of the invention provides a mine information acquisition method, a mine information acquisition device, mine information acquisition equipment and a storage medium, wherein the method comprises the following steps: the method comprises the following steps: acquiring voice sound wave signals sent by workers in a mine through each laid optical cable; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station; demodulating the received pulse optical signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents. The application realizes the efficient collection of the voice information in the mine.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," or "having," and any variations thereof, are intended to cover non-exclusive inclusions, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
For convenience of understanding, a specific flow of an embodiment of the present invention is described below, and referring to fig. 1, a first embodiment of a mine information acquisition method in an embodiment of the present invention includes:
101. acquiring voice sound wave signals sent by workers in a mine through each laid optical cable;
it is to be understood that the executing main body of the present invention may be a mine information collecting device, and may also be a terminal or a server, which is not limited herein. The embodiment of the present invention is described by taking a server as an execution subject.
The embodiment of the application can acquire and process related data based on the optical fiber sensing technology. Among them, the optical fiber sensing technology (AI) is a theory, method, technique and application system that simulates, extends and expands human Intelligence using a digital computer or a machine controlled by a digital computer, senses the environment, acquires knowledge and uses the knowledge to obtain the best result.
The optical fiber sensing technology base technologies generally include technologies such as sensors, dedicated optical fiber sensing technology chips, cloud computing, distributed storage, big data processing technologies, operation/interaction systems, and mechatronics. The optical fiber sensing technology mainly comprises a computer vision technology, a robot technology, a biological recognition technology, a voice processing technology, a natural language processing technology, machine learning/deep learning and the like.
In this embodiment, the laying of the optical cables refers to laying corresponding optical cables in each mine passage according to corresponding laying rules, and the optical cables are connected together through the optical sensing communication monitoring base station to collect and transmit optical signals; the voice acoustic signal refers to a voice communication signal which is generated by the mine worker directly or indirectly on the optical cable and is used for sensing communication.
In practical application, as shown in fig. 2, the information acquisition system of the mine based on the optical cable and the optical sensing communication monitoring base station which are connected with each other comprises a laying optical cable (201) connected with each other, a plurality of communication acquisition integrated terminals (202) installed on the laying optical cable, a plurality of information receiving terminals (203) connected with the laying optical cable, mine workers (204), an optical sensing communication monitoring base station (205), a monitoring platform (206) and the like.
The method comprises the steps that the voice acoustic signals in the mine are obtained through the optical cables which are laid in all mine ways and connected with one another, and the better realization mode is that workers in the mine directly speak to the mine way optical cables at the positions, or the mine way optical cables at the positions are knocked through corresponding tools according to a preset voice coding strategy (such as SOS knocking three times of long knocking and three times of short knocking and then three times of long knocking) to obtain the voice acoustic signals in the mine.
102. Analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to an optical sensing communication monitoring base station;
in this embodiment, the vibration state quantity refers to a vibration physical quantity corresponding to voice sound wave information; the optical sensing communication monitoring base station is a signal processing and transmitting transfer station which is used for connecting and laying an optical cable, receiving signals transmitted from the ground and pulse optical signals in the optical cable, and carrying out optical pulse modulation and demodulation processing on the received signals; the optical strain modulation refers to that an external signal field (a field to be measured) modulates light waves in an optical cable strain modulation optical fiber in a certain spatial distribution mode, forms a modulation signal phase and a spectrum band in a certain measurement domain, modulates the signal spectrum band, and can measure the size and spatial distribution of the external signal field through detection (demodulation); the pulse optical signal refers to an optical discrete pulse signal modulated by an optical sensing communication monitoring base station.
In practical application, external vibration signals are simulated by selecting slapping, 20 Hz square waves and 200 Hz sine waves in advance, collected signals are subjected to differential accumulation denoising, and finally vibration waveform restoration is realized through a fitting algorithm. It is known that the optical fiber sensing communication system has a good frequency response characteristic to vibration signals below 1 kHz over a length of 12 km optical fiber. Converting a vibration physical state quantity of a voice sound wave signal received by the optical cable to obtain a vibration state quantity corresponding to the voice sound wave signal, and further performing optical phase modulation on a phase parameter of an original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal (or performing optical shift frequency modulation on a frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal); and then transmitting the modulated pulse light signals to sub-optical sensing communication monitoring base stations connected with the end of the laid optical cable, wherein each sub-optical sensing communication monitoring base station superposes the received pulse light signals according to a preset unit time to obtain a single distributed modulated integrated pulse light signal (or each sub-optical sensing communication monitoring base station multiplexes the received pulse light signals according to a preset unit time to obtain a sequence distributed modulated integrated pulse light signal), so that the integrated pulse light signals integrated by each sub-optical sensing communication monitoring base station are transmitted to a total optical sensing communication monitoring base station. The optical sensing communication monitoring base station comprises a plurality of sub optical sensing communication monitoring base stations and a main optical sensing communication monitoring base station.
103. And demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents.
In this embodiment, the pulsed light signal received by the optical sensing communication monitoring base station may be returned to the optical sensing communication monitoring base station based on backward scattering light or forward scattering light generated by rayleigh scattering, raman scattering, or brillouin scattering, so as to receive a return light signal carrying a voice sound wave signal.
In practical application, modulation signal parameters corresponding to an original pulse optical signal are obtained, and the modulation signal parameters are matched with a corresponding coherent demodulation strategy; acquiring an incident pulse optical signal generated by an optical sensing communication monitoring base station; and carrying out light coherence and differential accumulation operation on the incident pulse light signals and the received pulse light signals to obtain voice sound wave signal positions, and carrying out signal extraction and voice conversion on signals corresponding to the voice sound wave signal positions to obtain corresponding data acquisition contents. A preferred implementation manner here is that the optical sensing communication monitoring base station receives the pulsed light signal generated and returned by the corresponding modulation principle, and the received pulsed light signal and the local oscillator light signal in the optical sensing communication monitoring base station perform optical interference to obtain a target interference light signal; then, frequency conversion and analog-to-digital conversion are carried out on the target interference optical signal, the signal is subjected to differential accumulation denoising, finally, vibration waveform restoration is achieved through a fitting algorithm to obtain a corresponding target electric signal, a preset signal identification algorithm is adopted to identify the target electric information, and corresponding data acquisition content is obtained; and then the processed data acquisition content is sent to a monitoring platform, and the monitoring platform analyzes according to the received data acquisition content to generate corresponding feedback information. The feedback information can carry out emergency communication or work indication on mine workers, can regulate and control corresponding control equipment in a mine, and can adjust the mine environment and mine production. The mine information acquisition and analysis system realizes efficient acquisition and analysis processing of mine information so as to improve mine production and daily and emergency communication of workers in the mine.
In the embodiment of the invention, the voice sound wave signals sent by workers in a mine are obtained through the laid optical cables; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to an optical sensing communication monitoring base station; and demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents. Compared with the prior art, the optical cable strain modulation system has the advantages that related voice information is directly acquired through the optical cable to carry out strain modulation on the pulse optical signals, the modulated pulse optical signals are transmitted to the optical sensing communication monitoring base station, the transmitted pulse optical signals are demodulated, and information collected through the optical cable is obtained. The voice information collection and analysis in the mine under the condition of no electricity in the mine are realized when mine accidents occur, the collection efficiency of the related voice information in the mine is improved, and communication between the inside and the outside of the mine is ensured.
Referring to fig. 3, a second embodiment of the mine information collecting method according to the embodiment of the present invention includes:
301. acquiring voice sound wave signals sent by workers in a mine through each laid optical cable;
302. performing optical phase modulation on phase parameters of original pulse optical signals in the laid optical cable based on the vibration state quantity to obtain first pulse optical signals;
in the present embodiment, the phase parameter refers to optical property phase information in the optical pulse signal; the optical phase modulation here means modulating the phase in the pulse optical signal.
In practical application, the obtained voice sound wave signal is analyzed to obtain a corresponding vibration state quantity, the vibration state quantity generates corresponding strain on an optical cable, the refractive index of an optical fiber in the optical cable is changed, the original pulse light signal is subjected to phase change modulation by using the strain effect and the photoelastic effect, a corresponding phase change quantity is calculated by using a Young modulus and a Poisson system corresponding to the optical fiber, and then the original pulse light signal is subjected to optical phase modulation of backward Rayleigh scattering through phase parameters to obtain a first pulse light signal.
303. Performing optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal;
in the present embodiment, the frequency parameter refers to optical property frequency information in the optical pulse signal; the optical shift modulation here means modulating the frequency in the pulse optical signal.
In practical application, the obtained voice sound wave signal is analyzed to obtain a corresponding vibration state quantity, the vibration state quantity generates corresponding strain on the optical cable, and the original pulse light signal in the optical cable is modulated by stress change, so that frequency drift is generated based on backward Brillouin scattering light, and a second pulse light signal is obtained.
304. Transmitting the modulated pulse optical signals to a sub-optical sensing communication monitoring base station connected with the end part of a laid optical cable;
in this embodiment, the sub optical sensing communication monitoring base station refers to each sub optical sensing communication monitoring base station distributed in the mine tunnel for transferring, i.e., amplifying, integrating, and the like.
In practical application, the pulse optical signals modulated by each laid optical cable in a mine are transmitted to the sub-optical sensing communication monitoring base station connected with the end part of the laid optical cable.
305. Each sub-optical sensing communication monitoring base station performs signal integration on the received pulse optical signals according to preset unit time to obtain integrated pulse optical signals;
in this embodiment, the unit time refers to a preset time period, and the pulse optical signals received by the sub optical sensing communication monitoring base station for uniformly transmitting corresponding data amount are transmitted.
In practical application, according to preset unit time, preliminarily demodulating each received pulse optical signal transmitted to the sub-optical sensing communication monitoring base station, and further superposing and arranging the voice sound wave signals into a single signal according to a preset single signal compiling mode to obtain a single integrated pulse optical signal after distributed modulation; or multiplexing each received pulse optical signal transmitted to the sub-optical sensing communication monitoring base station according to a preset unit time, and performing signal multiplexing on each pulse optical signal through a corresponding signal multiplexing mode (frequency division multiplexing, time division multiplexing, and the like) to obtain an integrated pulse optical signal after sequence distributed modulation.
306. Transmitting the integrated pulse optical signals integrated by each sub optical sensing communication monitoring base station to a total optical sensing communication monitoring base station;
in this embodiment, the total optical sensing communication monitoring base station refers to a monitoring base station used for connecting and receiving pulsed optical signals sent by all the sub optical sensing communication monitoring base stations.
In practical application, the integrated pulse optical signals integrated by each sub optical sensing communication monitoring base station in the mine are transmitted to the total optical sensing communication monitoring base station by using the connected optical cable. Therefore, limitation caused by injecting laser light into the optical fiber in the traditional optical communication can be avoided, the difficulty of optical communication construction is greatly reduced without cutting, shunting and coupling the optical fiber, and meanwhile, each physical point of the whole optical cable can be used as an information loading point, so that distributed voice sound wave signals are collected.
307. And demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents.
In the embodiment of the invention, the phase parameter of the original pulse optical signal in the laid optical cable is subjected to optical phase modulation based on the vibration state quantity to obtain a first pulse optical signal; performing optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal; transmitting the modulated pulse optical signals to a sub-optical sensing communication monitoring base station connected with the end part of a laid optical cable; each sub-optical sensing communication monitoring base station performs signal integration on the received pulse optical signals according to preset unit time to obtain integrated pulse optical signals; and transmitting the integrated pulse optical signals integrated by each sub optical sensing communication monitoring base station to the total optical sensing communication monitoring base station. Compared with the prior art, this application carries out the light to change the modulation to each pronunciation sound wave signal of laying the optical cable and acquireing, and integrate the pulse optical signal after the modulation of each optical cable transmission of laying, can avoid traditional optical communication to inject into the limitation that optic fibre brought with laser light, need not cut off optic fibre, shunt, the coupling greatly reduced the degree of difficulty of optical communication construction, can regard each physical point of whole optical cable as speech information load point simultaneously, the terminal access of distributing type has been realized. And the communication system based on the optical sensing technology is very suitable for the acquisition and return scenes of the sensing data in the underground, underwater, overhead and other environments, can realize a distributed access and plug-and-play sensing communication network, and greatly improves the acquisition efficiency of the voice information in the mine.
Referring to fig. 4, a third embodiment of the mine information collecting method according to the embodiment of the present invention includes:
401. acquiring voice sound wave signals sent by workers in a mine through each laid optical cable;
402. analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to an optical sensing communication monitoring base station;
403. acquiring modulation signal parameters corresponding to the original pulse optical signals, and matching corresponding coherent demodulation strategies by using the modulation signal parameters;
in this embodiment, the modulation signal parameter refers to a modulation parameter generated by a corresponding physical state quantity, such as rayleigh scattering with phase change, brillouin scattering with frequency shift change, and the like; the coherent demodulation strategy refers to that there are corresponding distributed optical fiber sensing demodulation methods (such as an optical time domain demodulation method, a brillouin time domain demodulation method, etc.) in the mine according to different modulation parameters.
In practical application, the optical sensing communication base station performs parameter identification on pulse optical signals of various return optical sensing communication monitoring base stations so as to acquire modulation parameters corresponding to environmental information; and then the modulation parameters are used for matching the corresponding distributed demodulation strategies. A preferred implementation here is to match the optical time domain demodulation strategy if the modulation parameter is rayleigh scattering, and to match the brillouin time domain demodulation strategy if the modulation parameter is brillouin scattering. By matching the different modulated pulse light signals with the corresponding demodulation strategies, the information carried in the modulated pulse light signals can be demodulated better, faster and without distortion.
404. Carrying out backward coherent positioning on the received pulse light signals according to a coherent demodulation strategy to obtain voice sound wave signal positions, and carrying out signal extraction and voice conversion on signals corresponding to the voice sound wave signal positions to obtain corresponding data acquisition contents;
in the embodiment, an incident pulse optical signal generated by an optical sensing communication monitoring base station is acquired according to a coherent demodulation strategy; the method comprises the steps of carrying out light coherent demodulation and differential accumulation operation on incident pulse light signals and received pulse light signals to obtain voice sound wave signal positions, further carrying out voice signal extraction on signals corresponding to the voice sound wave signal positions, extracting required voice sound wave signals and filtering other noise signals (such as various environment signals), converting the extracted voice sound signals into voice display information, and obtaining corresponding data acquisition contents.
405. Receiving feedback information returned by the monitoring platform through the optical sensing communication monitoring base station, and performing pulse modulation on the feedback information to obtain a feedback pulse optical signal;
in this embodiment, the feedback information refers to communication information generated by the monitoring platform according to the collected information and with mine workers, instructions for controlling operation of corresponding machines in the mine, and the like.
In practical application, the optical sensing communication monitoring base station receives feedback information returned by the monitoring platform, further performs optical modulation on the received feedback information, acquires a corresponding continuous optical signal, and performs optical coupling on the continuous optical signal according to a preset proportion to obtain a coupling output optical signal and a local oscillator optical signal; and then, performing signal modulation on the coupling output optical signal by adopting a preset modulation mode to obtain a modulated optical signal, and performing frequency boosting and power amplification on the modulated optical signal to obtain a feedback pulse optical signal.
406. Sending the fed back pulse optical signals to each information receiving terminal by laying an optical cable;
in this embodiment, the information receiving terminal refers to the above-mentioned communication acquisition integrated terminal, various handheld receiving devices of mine workers, or other machine devices.
In practical application, the fed back pulse optical signals are sent to at least one information receiving terminal corresponding to the position information through corresponding laid optical cables.
407. And demodulating the fed back pulse optical signal through the information receiving terminal to obtain data feedback contents in corresponding formats.
In this embodiment, the information receiving terminal demodulates the fed-back pulsed light signal, so as to obtain data feedback contents in a corresponding format sent by the monitoring center, so that mine personnel can communicate with the monitoring center through an optical cable, or the monitoring center sends a corresponding instruction to a corresponding mine machine, and the production operation of the mine or the adjustment of the corresponding mine environment is adjusted.
In the embodiment of the invention, modulation signal parameters corresponding to an original pulse optical signal are obtained, and the modulation signal parameters are matched with a corresponding coherent demodulation strategy; carrying out backward coherent positioning on the received pulse light signals according to a coherent demodulation strategy to obtain voice sound wave signal positions, and carrying out signal extraction and voice conversion on signals corresponding to the voice sound wave signal positions to obtain corresponding data acquisition contents; receiving feedback information returned by the monitoring platform through the optical sensing communication monitoring base station, and performing pulse modulation on the feedback information to obtain a feedback pulse optical signal; sending the fed back pulse optical signals to each information receiving terminal by laying an optical cable; and demodulating the fed back pulse optical signal through the information receiving terminal to obtain data feedback contents in corresponding formats. Compared with the prior art, the method and the device have the advantages that the received pulse light signals are demodulated according to the corresponding coherent demodulation strategy to obtain the corresponding data acquisition contents, the feedback contents of the monitoring center are obtained, and the feedback contents are sent to the corresponding information receiving terminal through the corresponding light modulation and demodulation, so that the information bidirectional communication is realized. The system realizes efficient collection and analysis and bidirectional communication of information in the mine, thereby ensuring that the monitoring center is communicated with information collection and communication of mine personnel when mine accidents and no electricity occur.
In the above description of the mine information collection method in the embodiment of the present invention, referring to fig. 5, the mine information collection device in the embodiment of the present invention is described below, and an embodiment of the mine information collection device in the embodiment of the present invention includes:
a signal obtaining module 501, configured to obtain, through each laid optical cable, a voice sound wave signal sent by a worker in a mine;
the information modulation module 502 is configured to analyze a vibration state quantity of the voice sound wave signal, perform optical strain modulation on a signal parameter of the original pulsed light signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulsed light signal, and transmit the modulated pulsed light signal to the optical sensing communication monitoring base station;
the information demodulation module 503 is configured to demodulate the received pulsed light signal through the optical sensing communication monitoring base station to obtain corresponding data acquisition content, and push the data acquisition content.
In the embodiment of the invention, the voice sound wave signals sent by workers in a mine are obtained through the laid optical cables; analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to an optical sensing communication monitoring base station; and demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents. Compared with the prior art, the optical cable strain modulation system has the advantages that related voice information is directly acquired through the optical cable to perform strain modulation on the pulse optical signals, the modulated pulse optical signals are transmitted to the optical sensing communication monitoring base station, the transmitted pulse optical signals are demodulated, and information collected through the optical cable is obtained. The voice information collection and analysis in the mine under the condition of no electricity in the mine are realized when mine accidents occur, the collection efficiency of the related voice information in the mine is improved, and communication between the inside and the outside of the mine is ensured.
Referring to fig. 6, another embodiment of the mine information collecting device in the embodiment of the present invention includes:
a signal obtaining module 501, configured to obtain, through each laid optical cable, a voice sound wave signal sent by a worker in a mine;
the information modulation module 502 is configured to analyze a vibration state quantity of the voice sound wave signal, perform optical strain modulation on a signal parameter of the original pulsed light signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulsed light signal, and transmit the modulated pulsed light signal to the optical sensing communication monitoring base station;
the information demodulation module 503 is configured to demodulate the received pulsed light signal through the optical sensing communication monitoring base station to obtain corresponding data acquisition content, and push the data acquisition content.
Further, the information modulation module 502 includes:
the phase modulation unit 5021 is used for performing optical phase modulation on the phase parameters of the original pulse optical signals in the laid optical cable based on the vibration state quantity to obtain first pulse optical signals;
the frequency modulation unit 5022 is configured to perform optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal.
Further, the information modulation module 502 further includes:
the transmission unit 5023 is used for transmitting the modulated pulse optical signals to the sub-optical sensing communication monitoring base station connected with the end part of the laid optical cable;
the integrating unit 5024 is used for performing signal integration on the received pulse optical signals by each sub-optical sensing communication monitoring base station according to preset unit time to obtain integrated pulse optical signals;
the summarizing unit 5025 is used for transmitting the integrated pulse optical signals integrated by the sub optical sensing communication monitoring base stations to the main optical sensing communication monitoring base station.
Further, the integration unit 5024 is also configured to:
each sub-optical sensing communication monitoring base station superposes the received pulse optical signals according to a preset unit time to obtain a single integrated pulse optical signal after distributed modulation;
or,
and each sub-optical sensing communication monitoring base station multiplexes the received pulse optical signals according to a preset unit time to obtain the integrated pulse optical signals after sequence distributed modulation.
Further, the information demodulation module 503 includes:
a strategy matching unit 5031, configured to obtain a modulation signal parameter corresponding to the original pulsed light signal, and match a corresponding coherent demodulation strategy with the modulation signal parameter;
the data extracting unit 5032 is configured to perform backward coherent positioning on the received pulsed light signal according to the coherent demodulation strategy to obtain a position of a voice sound wave signal, and perform signal extraction and voice conversion on a signal corresponding to the position of the voice sound wave signal to obtain corresponding data acquisition content.
Further, the data extracting unit 5032 is further configured to:
acquiring an incident pulse optical signal generated by the optical sensing communication monitoring base station;
and carrying out light coherence and differential accumulation operation on the incident pulse light signals and the received pulse light signals to obtain the position of the voice sound wave signal.
Further, the mine information collecting device further includes an information feedback module 504, and the information feedback module 504 includes:
the feedback modulation unit 5041 is configured to receive feedback information returned by the monitoring platform through the optical sensing communication monitoring base station, and perform pulse modulation on the feedback information to obtain a fed-back pulse optical signal;
a signal transmitting unit 5042 configured to transmit the fed back pulsed light signal to each of the information receiving terminals through the laid optical cable;
a feedback demodulation unit 5043, configured to demodulate the fed-back pulsed optical signal through the information receiving terminal, so as to obtain data feedback content in a corresponding format.
In the embodiment of the invention, the voice sound wave signals are directly or indirectly modulated into corresponding physical state quantities such as temperature, vibration, stress, deformation, an electric field, a magnetic field and the like, and the physical quantities are directly modulated into pulse optical signals in the optical fiber by adopting an optical sensing technology, so that the modulation and the transmission of information are realized; and the monitoring center generates corresponding feedback information by using the modulated pulse light signals and sends the feedback information to the corresponding terminal, so that the communication of the information is realized. Compared with the prior art, the optical fiber sensor has the advantages that limitation caused by the fact that laser light is injected into optical fibers in the traditional optical communication can be avoided, the optical fibers do not need to be cut off, the optical communication construction is divided, coupling is greatly reduced, each physical point of the whole optical cable can be used as an information loading point, a distributed access and plug-and-play sensing communication network is achieved, the collection efficiency of mine information is improved, and the information collection and the information communication of related personnel during mine accidents are guaranteed.
Fig. 5 and 6 describe the mine information collection device in the embodiment of the present invention in detail from the perspective of the modular functional entity, and the mine information collection device in the embodiment of the present invention is described in detail from the perspective of hardware processing.
Fig. 7 is a schematic structural diagram of a mine information collection device 700 according to an embodiment of the present invention, where the mine information collection device 700 may have a relatively large difference due to different configurations or performances, and may include one or more processors (CPUs) 710 (e.g., one or more processors) and a memory 720, one or more storage media 730 (e.g., one or more mass storage devices) storing an application 733 or data 732. Memory 720 and storage medium 730 may be, among other things, transient storage or persistent storage. The program stored on the storage medium 730 may include one or more modules (not shown), each of which may include a series of instructions operating on the mine information collection device 700. Further, the processor 710 may be configured to communicate with the storage medium 730 to execute a series of instruction operations in the storage medium 730 on the mine information collection device 700.
The mine information collection apparatus 700 may also include one or more power supplies 740, one or more wired or wireless network interfaces 750, one or more input-output interfaces 760, and/or one or more operating systems 731, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, and the like. Those skilled in the art will appreciate that the mine information collection device configuration shown in fig. 7 does not constitute a limitation of the mine information collection device and may include more or fewer components than shown, or some components in combination, or a different arrangement of components.
The invention also provides mine information acquisition equipment, which comprises a memory and a processor, wherein computer readable instructions are stored in the memory, and when being executed by the processor, the computer readable instructions cause the processor to execute the steps of the mine information acquisition method in the embodiments.
The present invention also provides a computer readable storage medium, which may be a non-volatile computer readable storage medium, or a volatile computer readable storage medium, having stored therein instructions, which, when run on a computer, cause the computer to perform the steps of the mine information acquisition method.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable consumer electronics, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like. The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; 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 (10)
1. A mine information acquisition method is applied to a mine information acquisition system, the mine information acquisition system comprises a plurality of mutually connected laying optical cables and an optical sensing communication monitoring base station arranged at the end part of the laying optical cable, and the mine information acquisition method is characterized by comprising the following steps:
acquiring voice sound wave signals sent by workers in a mine through the laid optical cables;
analyzing the vibration state quantity of the voice sound wave signal, carrying out optical strain modulation on the signal parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station;
and demodulating the received pulse optical signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents, and pushing the data acquisition contents.
2. The mine information collection method according to claim 1, wherein the signal parameters include phase parameters and frequency parameters, the modulated pulsed light signals include a first pulsed light signal and a second pulsed light signal, and the signal parameters of the original pulsed light signals in the laid optical cable are optically strain-modulated based on the vibration state quantity to obtain modulated pulsed light signals, including:
performing optical phase modulation on the phase parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a first pulse optical signal;
or,
and performing optical frequency shift modulation on the frequency parameter of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a second pulse optical signal.
3. The mine information collection method of claim 1, wherein the optical sensing communication monitoring base station comprises a plurality of sub optical sensing communication monitoring base stations and a total optical sensing communication monitoring base station, and the transmitting the modulated pulsed optical signal to the optical sensing communication monitoring base station comprises:
transmitting the modulated pulse optical signals to a sub-optical sensing communication monitoring base station connected with the end part of the laid optical cable;
each sub-optical sensing communication monitoring base station performs signal integration on the received pulse optical signals according to preset unit time to obtain integrated pulse optical signals;
and transmitting the integrated pulse optical signals integrated by the sub optical sensing communication monitoring base stations to a total optical sensing communication monitoring base station.
4. The mine information collection method of claim 3, wherein the sub-optical sensing communication monitoring base stations perform signal integration on the received pulsed light signals according to a preset unit time to obtain integrated pulsed light signals, and the method comprises:
each sub-optical sensing communication monitoring base station superposes the received pulse optical signals according to a preset unit time to obtain a single integrated pulse optical signal after distributed modulation;
or,
and each sub-optical sensing communication monitoring base station multiplexes the received pulse optical signals according to a preset unit time to obtain the integrated pulse optical signals after sequence distributed modulation.
5. The mine information collection method of claim 1, wherein the demodulating the received pulsed light signal by the light sensing communication monitoring base station to obtain corresponding data collection content comprises:
acquiring modulation signal parameters corresponding to the original pulse optical signals, and matching corresponding coherent demodulation strategies by using the modulation signal parameters;
and carrying out backward coherent positioning on the received pulse light signals according to the coherent demodulation strategy to obtain the position of the voice sound wave signals, and carrying out signal extraction and voice conversion on the signals corresponding to the position of the voice sound wave signals to obtain corresponding data acquisition contents.
6. The mine information acquisition method of claim 5, wherein the obtaining of the position of the voice sound wave signal by performing backward coherent positioning on the received pulsed light signal according to the coherent demodulation strategy comprises:
acquiring an incident pulse optical signal generated by the optical sensing communication monitoring base station;
and carrying out light coherence and differential accumulation operation on the incident pulse light signal and the received pulse light signal to obtain the position of the voice sound wave signal.
7. The mine information collection method of claim 4, wherein the mine information collection system further comprises a plurality of information receiving terminals and a monitoring platform connected to the fiber-optic cable, and after the pushing the data collection content, comprises:
receiving feedback information returned by the monitoring platform through the optical sensing communication monitoring base station, and performing pulse modulation on the feedback information to obtain a feedback pulse optical signal;
sending the fed back pulse light signals to each information receiving terminal through the laid optical cable;
and demodulating the fed back pulse optical signal through the information receiving terminal to obtain data feedback contents in corresponding formats.
8. The mine information acquisition device is characterized in that the mine information acquisition system comprises a plurality of mutually connected laying optical cables and an optical sensing communication monitoring base station arranged at the end part of the laying optical cable, and the mine information acquisition device comprises:
the signal acquisition module is used for acquiring voice sound wave signals sent by workers in a mine through the laid optical cables;
the information modulation module is used for analyzing the vibration state quantity of the voice sound wave signal, performing optical strain modulation on signal parameters of the original pulse optical signal in the laid optical cable based on the vibration state quantity to obtain a modulated pulse optical signal, and transmitting the modulated pulse optical signal to the optical sensing communication monitoring base station;
and the information demodulation module is used for demodulating the received pulse light signals through the optical sensing communication monitoring base station to obtain corresponding data acquisition contents and pushing the data acquisition contents.
9. A mine information collection device, comprising: a memory and at least one processor, the memory having instructions stored therein;
the at least one processor invokes the instructions in the memory to cause the mine information collection device to perform the steps of the mine information collection method of any of claims 1-7.
10. A computer readable storage medium having instructions stored thereon, wherein the instructions, when executed by a processor, implement the steps of the mine information collection method of any of claims 1-7.
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