CN103974461A - Mine emergent and daily dispatching communication network system - Google Patents
Mine emergent and daily dispatching communication network system Download PDFInfo
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- CN103974461A CN103974461A CN201410208530.5A CN201410208530A CN103974461A CN 103974461 A CN103974461 A CN 103974461A CN 201410208530 A CN201410208530 A CN 201410208530A CN 103974461 A CN103974461 A CN 103974461A
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Abstract
The invention relates to a mine emergent and daily dispatching communication network system which solves the problems that existing mine communication facilitates cannot meet daily commanding and dispatching, personnel positioning and mine up-down communication contact or do not have the basic communication function under the emergent situation. The mine emergent and daily dispatching communication network system comprises an overground communication unit and an underground communication unit. The overground communication unit comprises a computer and an overground ground penetrating communication device. The computer is used for sending control dispatching information to the overground ground penetrating communication device, receiving underground working state information sent by the overground ground penetrating communication device and displaying the underground working state information. The underground communication unit comprises N underground switching devices and M handheld terminals, wherein the M and the N are integers, the N is larger than or equal to 4, and the N is smaller than or equal to the M. According to the mine emergent and daily dispatching communication network system, underground communication is achieved by the adoption of a local area network, implementation is easy, the cost is low, and compared with an existing well emergent and daily dispatching communication network system, the year-to-year cost is reduced by more than 10%.
Description
Technical field
The present invention relates to a kind ofly solve existing mine communication facility and cannot not only meet daily command scheduling, personnel positioning, the upper and lower liaison of mine but also there is the emergent and scheduler routine communications network system of the mine of problem of basic communication in emergency circumstances.
Background technology
At present, mine communication system mainly contains power line carrier communication, Medium frequency induction communication, VHF leaky feeder communication, cell cellular mobile communication, system for mine personal handphone radio communication and low frequency through the earth communication.Legacy communications system utilizes proprietary communication line or existing power line and uses the circuits such as wireless channel as communication link.
Demand that traditional communication mode can tackle that daily command scheduling, personnel positioning, mine are communicated by letter up and down etc., but under landslide condition, can cause the open circuit problem of communication disruption of wire communication line.High-frequency wireless signals in corner, tunnel, tunnel landslide and built up area can not effectively penetrate formation communication link, networking base station path is also easily cut off in this case, therefore traditional mine communication system can not meet the communicating requirement under case of emergency.
Tradition low-frequency electromagnetic wave ground through communication system, the principle of utilizing low-frequency electromagnetic wave signal can penetrate large obstacle communicates, this communication mode can be realized through the earth communication, but communication frequency is low, signal sharply reduces with the increase of transceiver distance, in darker mine, can not realize effective transmission of speech information.And its system antenna size is large, be conventionally arranged in advance the fixed position of mine, be not suitable for that staff is portable to carry, be only suitable in case of emergency using, be difficult to be applied to the work that daily command scheduling, personnel positioning, mine are communicated by letter up and down.Mine communication facility cannot meet and not only meet daily command scheduling, personnel positioning, the upper and lower liaison of mine but also have basic communication in emergency circumstances, if build two cover communications facilitys, cost drops into larger.
Summary of the invention
The object of the invention is to propose more than 10% mine of a kind of cost meets an urgent need and scheduler routine communications network system.
The object of the present invention is achieved like this:
The present invention includes aboveground communication unit and underground communica tion unit, aboveground communication unit comprises computer and aboveground through the earth communication equipment;
Computer is for Control and Schedule information is sent to aboveground through the earth communication equipment, and the underground work state information that on received well, through the earth communication equipment sends, and underground work state information is shown;
Underground work state information comprises text message, voice messaging and the command information that the work state information of down-hole switching equipment, the locating information of holding hand-held terminal device personnel, hand-held terminal device send;
Control and Schedule information comprises voice messaging and text message;
Aboveground through the earth communication equipment comprises digital processing unit, aboveground conduct electricity flow field through the earth communication module, communication interface and aboveground electrical dipole antenna No. one;
No. one digital processing unit is used for the Control and Schedule information that receiving computer sends, the Control and Schedule information that modulation computer sends, and the Control and Schedule information after modulation is sent to conduct electricity flow field through the earth communication module, receive the underground work status signal that conduct electricity flow field through the earth communication module returns simultaneously and carry out demodulation, by the underground work status signal transmission after demodulation to computer;
Aboveground conduct electricity flow field through the earth communication module for the modulation that receives digital processing unit and send after Control and Schedule information, and Control and Schedule information after modulation is sent to aboveground electrical dipole antenna, underground work status signal after the modulation that on received well, electrical dipole antenna sends simultaneously, and working state signal under received well is sent to digital processing unit No. one;
Communication interface is used for connecting digital processing unit and computer, realizes between digital processing unit and computer and communicating;
Aboveground electrical dipole antenna for the modulation that receives conduct electricity flow field through the earth communication module and send after Control and Schedule information, and this information is launched to stratum, underground work state information after the modulation that under received well, switching equipment sends simultaneously, and the underground work state information after modulation is sent to aboveground conduct electricity flow field through the earth communication module;
Underground communica tion unit comprises N down-hole switching equipment and M handheld terminal; Wherein, M and N are integer, and N >=4, N≤M;
Each down-hole switching equipment comprises a WIFI module, No. two digital processing units, underground conduct electricity flow field through the earth communication module, supply module, down-hole electrical dipole antenna and WIFI antennas;
WIFI antenna Control and Schedule information after for the demodulation that receives WIFI module and send, and by the Control and Schedule information transmitting after the demodulation receiving to self carry out on the hand-held terminal device of wireless connections; The information that simultaneously receives the staff's who holds hand-held terminal device input, sends to WIFI module by the information of staff's input;
The information of described staff's input comprises voice messaging and the command information of text message, staff's input;
A WIFI module is used for the staff's who receives a WIFI antenna transmission input message, and by from WIFI antenna reception to staff's input message send to digital processing unit No. two, receive the Control and Schedule information of No. two digital processing unit transmissions simultaneously, and the Control and Schedule information receiving is sent to WIFI antenna No. one;
Down-hole electrical dipole antenna uploads for received well the Control and Schedule information that conductive flow field through the earth communication module sends; And the Control and Schedule information receiving is sent to conduct electricity flow field, down-hole through the earth communication module; The underground work state information that under received well, conduct electricity flow field through the earth communication module sends simultaneously, and underground work state information is launched to ground surface;
The Control and Schedule information that conduct electricity flow field, down-hole through the earth communication module sends for electrical dipole antenna under received well, and the Control and Schedule information receiving is sent to digital processing unit No. two; Receive the underground work state information of No. two digital processing unit transmissions simultaneously, and underground work state information is sent to down-hole electrical dipole antenna;
No. two digital processing units Control and Schedule information after for the modulation that under received well, conduct electricity flow field through the earth communication module sends, carries out demodulation to the Control and Schedule information after modulation, and the Control and Schedule information after demodulation is sent to WIFI module No. one; Receive the locating information on the hand-held terminal device that WIFI module sends simultaneously and hold the information of the staff's of hand-held terminal device input, and modulate, after modulation, be sent to conduct electricity flow field, down-hole through the earth communication module;
Supply module is used to No. two digital processing units, WIFI module, No. two digital processing units, conduct electricity flow field, down-hole through the earth communication module for power supply;
Each hand-held terminal device comprises No. two WIFI modules, No. two WIFI antennas, No. three processors, display device, audio frequency apparatus, character inputting device and battery modules;
No. two WIFI antennas are used for receiving the wireless messages sending with the down-hole switching equipment that self carries out wireless connections, and the wireless messages receiving is sent to WIFI module No. two; Receive the locating information of No. two WIFI module transmissions and the information of staff's input simultaneously, and the information of staff's input is sent to and the down-hole switching equipment that self carries out wireless connections;
The information of staff's input comprises voice messaging and the command information of text message, staff's input;
No. two WIFI modules are for receiving the wireless messages of No. two WIFI antenna transmissions, and the wireless messages of reception is sent to processor No. three, receive the locating information of No. three processor transmissions and staff's input message simultaneously, and the locating information of reception and staff's input message is sent to WIFI antenna No. two;
No. three processors are used for receiving the wireless messages of No. two WIFI module transmissions, and the wireless messages of reception is sent to display device and audio frequency apparatus; The input message of audio reception equipment and character inputting device simultaneously, and after input message is modulated, be sent to No. two WIFI module;
Display device is used for receiving the wireless messages of No. three processor transmissions, and the information receiving is shown;
Audio frequency apparatus is for inputting audio signal and playing audio signal; Audio frequency apparatus comprises microphone and earphone;
Character inputting device is for input text information;
Battery module is used to processor, display device, audio frequency apparatus, character inputting device and No. two WIFI module for power supply No. three.
Aboveground conduct electricity flow field through the earth communication module comprises digital processing unit, D/A modular converter, power amplifier module, matching network module, preposition low noise differential amplifier, band pass filter, digital Auto Gain control module, A/D modular converter, speech compression contracting circuit, speech coding decoding circuit, audio interface and serial data mouth No. four;
Serial data mouth is used for connecting No. four digital processing units and a digital processing unit, realizes the transfer of data between conduct electricity flow field through the earth communication module and a digital processing unit;
Audio interface, for being connected between the audio port of computer and speech coding decoding circuit, realizes the transmission of audio signal; The voice signal that speech coding decoding circuit sends for audio reception interface, by voice signal quantization encoding, and sends to speech compression contracting circuit by the voice signal after quantization encoding; Receive the voice signal after speech compression contracting circuit decompresses simultaneously, and the voice signal after decompressing is decoded, after decoding, be sent to serial data mouth;
The high speed voice data that speech compression contracting circuit sends for receiving speech coding decoding circuit, and be low-rate data coding by high speed voice data compression, and low-rate data coding is sent to digital processing unit No. four; Receive the low-rate data coding of No. four digital processing unit transmissions simultaneously, and the low-rate data coding decompress(ion) of No. four digital processing unit transmissions is condensed to high speed voice data, and high speed voice data are sent to speech coding decoding circuit;
D/A modular converter is used for receiving the digital waveform signal of No. four digital processing units, and digital waveform signal is converted to analog signal, and analog signal is sent to power amplifier module;
The analog signal that power amplifier module sends for receiving D/A modular converter, and the analog signal receiving is carried out to power amplification, the analog signal after power amplification is sent to matching network module;
The analog signal of matching network module after for the power amplification that receives power amplifier module and send, and carry out mating of load impedance and power amplifier characteristic impedance, acquisition maximum power output signal, and maximum power output signal is sent to aboveground electrical dipole antenna;
The analog signal that preposition low noise differential amplifier sends for electrical dipole antenna on received well, and analog signal is carried out to inhibition and the elementary amplification of common-mode signal, and the analog signal of carrying out after common mode inhibition and elementary amplification is sent to band pass filter;
The analog signal of band pass filter after for the common mode inhibition and the elementary amplification that receive preposition low noise differential amplifier and send, and this analog signal is carried out to filtering, and filtered analog signal is sent to digital Auto Gain control module;
The filtered analog signal that digital Auto Gain control module sends for reception bandpass filter, and filtered analog signal is carried out to automatic gain, and the analog signal after automatic gain is sent to A/D modular converter;
The analog signal of A/D modular converter after for the automatic gain that receives digital Auto Gain control module and send, and is converted to digital signal by this analog signal, and digital signal is sent to digital processing unit No. four;
No. four digital processing units are for receiving the digital signal of A/D modular converter transmission, and this signal is separated to be in harmonious proportion and store, and the low-rate data coding in demodulating data is sent to speech compression contracting circuit, the serial data in demodulating data is sent to serial data mouth;
Receive the serial data of serial data mouth transmission and the low-rate data coding that speech compression contracting circuit sends simultaneously, and be digital waveform by the serial data receiving and low-rate data coded modulation, and digital waveform signal is sent to D/A modular converter.
Beneficial effect of the present invention is:
The present invention is applied to the network system that mine is emergent and scheduler routine is communicated by letter.It comprises computer, aboveground through the earth communication equipment, down-hole switching equipment and hand-held terminal device.Computer is by voice and text message is realized by aboveground through the earth communication equipment and the data exchanging function of N down-hole switching equipment, down-hole switching equipment carries out networking by conduct electricity flow field through the earth communication module and other down-hole switching equipment and aboveground through the earth communication equipment, realize exchanges data, hand-held terminal device by the WIFI module in the switching equipment of down-hole and down-hole is interconnected, both met the daily command scheduling of mine work by transmit earth penetrating sends handheld terminal locating information and work state information from underground equipment to aboveground unit of conduct electricity flow field, down-hole through the earth communication module and electrical dipole antenna, personnel positioning, the upper and lower liaison of mine has realized again basic communication in emergency circumstances.And the present invention adopts local area network (LAN) to realize underground communica tion, be easy to realize, cost is low, and compared with and scheduler routine communications network system emergent with existing well, cost is more than 10% on year-on-year basis.
Brief description of the drawings
Fig. 1 is that mine of the present invention is met an urgent need and scheduler routine communications network system block diagram;
Fig. 2 is the system block diagram of aboveground through the earth communication equipment;
Fig. 3 is the system block diagram of down-hole switching equipment;
Fig. 4 is the system block diagram of hand-held terminal device;
Fig. 5 is the system block diagram of conduct electricity flow field through the earth communication module.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described further.
Mine of the present invention is met an urgent need and scheduler routine communications network system, and this system comprises aboveground communication unit and underground communica tion unit; Described aboveground communication unit comprises computer and aboveground through the earth communication equipment;
Described computer is for Control and Schedule information is sent to aboveground through the earth communication equipment, and the underground work state information that on received well, through the earth communication equipment sends, and underground work state information is shown;
Underground work state information comprises text message, voice messaging and the command information that the work state information of down-hole switching equipment, the locating information of holding hand-held terminal device personnel, hand-held terminal device send;
Control and Schedule information comprises voice messaging and text message;
Aboveground through the earth communication equipment comprises a digital processing unit, digital processing unit, aboveground conduct electricity flow field through the earth communication module, communication interface and an aboveground electrical dipole antenna;
The Control and Schedule information that digital processing unit 1 sends for receiving computer, the Control and Schedule information that modulation computer sends, and the Control and Schedule information after modulation is sent to conduct electricity flow field through the earth communication module, receive the underground work status signal that conduct electricity flow field through the earth communication module returns simultaneously and carry out demodulation, by the underground work status signal transmission after demodulation to computer;
Aboveground conduct electricity flow field through the earth communication module for the modulation that receives digital processing unit and send after Control and Schedule information, and Control and Schedule information after modulation is sent to aboveground electrical dipole antenna, underground work status signal after the modulation that on received well, electrical dipole antenna sends simultaneously, and working state signal under received well is sent to digital processing unit No. one;
Communication interface is used for connecting digital processing unit and computer, realizes between digital processing unit and computer and communicating;
Aboveground electrical dipole antenna for the modulation that receives conduct electricity flow field through the earth communication module and send after Control and Schedule information, and this information is launched to stratum, underground work state information after the modulation that under received well, switching equipment sends simultaneously, and the underground work state information after modulation is sent to aboveground conduct electricity flow field through the earth communication module;
Underground communica tion unit comprises N down-hole switching equipment and M handheld terminal; Wherein, M and N are integer, and N >=4, N≤M;
Each down-hole switching equipment comprises WIFI module 1, No. two digital processing units, underground conduct electricity flow field through the earth communication module, supply module, down-hole electrical dipole antenna and WIFI antennas;
WIFI antenna Control and Schedule information after for the demodulation that receives WIFI module and send, and by the Control and Schedule information transmitting after the demodulation receiving to self carry out on the hand-held terminal device of wireless connections; The information that simultaneously receives the staff's who holds hand-held terminal device input, sends to WIFI module by the information of staff's input;
The information of described staff's input comprises voice messaging and the command information of text message, staff's input;
A WIFI module is used for the staff's who receives a WIFI antenna transmission input message, and by from WIFI antenna reception to staff's input message send to digital processing unit No. two, receive the Control and Schedule information of No. two digital processing unit transmissions simultaneously, and the Control and Schedule information receiving is sent to WIFI antenna No. one;
Down-hole electrical dipole antenna uploads for received well the Control and Schedule information that conductive flow field through the earth communication module sends; And the Control and Schedule information receiving is sent to conduct electricity flow field, down-hole through the earth communication module; The underground work state information that under received well, conduct electricity flow field through the earth communication module sends simultaneously, and underground work state information is launched to ground surface;
The Control and Schedule information that conduct electricity flow field, down-hole through the earth communication module sends for electrical dipole antenna under received well, and the Control and Schedule information receiving is sent to digital processing unit No. two; Receive the underground work state information of No. two digital processing unit transmissions simultaneously, and underground work state information is sent to down-hole electrical dipole antenna;
No. two digital processing units Control and Schedule information after for the modulation that under received well, conduct electricity flow field through the earth communication module sends, carries out demodulation to the Control and Schedule information after modulation, and the Control and Schedule information after demodulation is sent to WIFI module No. one; Receive the locating information on the hand-held terminal device that WIFI module sends simultaneously and hold the information of the staff's of hand-held terminal device input, and modulate, after modulation, be sent to conduct electricity flow field, down-hole through the earth communication module;
Supply module is used to No. two digital processing units, WIFI module, No. two digital processing units, conduct electricity flow field, down-hole through the earth communication module for power supply;
Each hand-held terminal device comprises No. two WIFI modules, No. two WIFI antennas, No. three processors, display device, audio frequency apparatus, character inputting device and battery modules;
No. two WIFI antennas are used for receiving the wireless messages sending with the down-hole switching equipment that self carries out wireless connections, and the wireless messages receiving is sent to WIFI module No. two; Receive the locating information of No. two WIFI module transmissions and the information of staff's input simultaneously, and the information of staff's input is sent to and the down-hole switching equipment that self carries out wireless connections;
The information of staff's input comprises voice messaging and the command information of text message, staff's input;
No. two WIFI modules are for receiving the wireless messages of No. two WIFI antenna transmissions, and the wireless messages of reception is sent to processor No. three, receive the locating information of No. three processor transmissions and staff's input message simultaneously, and the locating information of reception and staff's input message is sent to WIFI antenna No. two;
No. three processors are used for receiving the wireless messages of No. two WIFI module transmissions, and the wireless messages of reception is sent to display device and audio frequency apparatus; The input message of audio reception equipment and character inputting device simultaneously, and after input message is modulated, be sent to No. two WIFI module;
Display device is used for receiving the wireless messages of No. three processor transmissions, and the information receiving is shown;
Audio frequency apparatus is for inputting audio signal and playing audio signal; Audio frequency apparatus comprises microphone and earphone;
Character inputting device is for input text information;
Battery module is used to processor, display device, audio frequency apparatus, character inputting device and No. two WIFI module for power supply No. three.
Embodiment one: in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, present embodiment is described, the emergent and scheduler routine communications network system of mine described in present embodiment, this system comprises aboveground communication unit and underground communica tion unit; Described aboveground communication unit comprises computer 1 and aboveground through the earth communication equipment 2;
Described computer 1 is for Control and Schedule information being sent to aboveground through the earth communication equipment 2, and the underground work state information that on received well, through the earth communication equipment 2 sends, and underground work state information is shown;
Underground work state information comprises text message, voice messaging and the command information that the work state information of down-hole switching equipment 3, the locating information of holding hand-held terminal device 4 personnel, hand-held terminal device 4 send;
Control and Schedule information comprises voice messaging and text message;
Aboveground through the earth communication equipment 2 comprises digital processing unit 201, digital processing unit 201, aboveground conduct electricity flow field through the earth communication module 202, communication interface 203 and an aboveground electrical dipole antenna 204;
The Control and Schedule information that digital processing unit 201 sends for receiving computer 1, the Control and Schedule information that modulation computer 1 sends, and the Control and Schedule information after modulation is sent to conduct electricity flow field through the earth communication module 202, receive the underground work status signal that conduct electricity flow field through the earth communication module 202 returns simultaneously and carry out demodulation, by the underground work status signal transmission after demodulation to computer 1;
Aboveground conduct electricity flow field through the earth communication module 202 for the modulation that receives digital processing unit 201 and send after Control and Schedule information, and Control and Schedule information after modulation is sent to aboveground electrical dipole antenna 204, underground work status signal after the modulation that on received well, electrical dipole antenna 204 sends simultaneously, and working state signal under received well is sent to digital processing unit 201 No. one;
Communication interface 203 is for connecting digital processing unit 201 and computer 1, realizes between digital processing unit 201 and computer 1 and communicating;
Aboveground electrical dipole antenna 204 for the modulation that receives conduct electricity flow field through the earth communication module 202 and send after Control and Schedule information, and this information is launched to stratum, underground work state information after the modulation that under received well, switching equipment 3 sends simultaneously, and the underground work state information after modulation is sent to aboveground conduct electricity flow field through the earth communication module 202;
Underground communica tion unit comprises N down-hole switching equipment 3 and M handheld terminal 4; Wherein, M and N are integer, and N >=4, N≤M;
Each down-hole switching equipment 3 comprises WIFI module 301, No. two digital processing units 302, underground conduct electricity flow field through the earth communication module 303, supply module 305, down-hole electrical dipole antenna 304 and WIFI antennas 306;
WIFI antenna 306 Control and Schedule information after for the demodulation that receives WIFI module 301 and send, and by the Control and Schedule information transmitting after the demodulation receiving to self carry out on the hand-held terminal device 4 of wireless connections; The information that simultaneously receives the staff's who holds hand-held terminal device 4 input, sends to WIFI module 301 by the information of staff's input;
The information of described staff's input comprises voice messaging and the command information of text message, staff's input;
WIFI module 301 is for the staff's that receives WIFI antenna 306 and send input message, and the staff's who receives from WIFI antenna 306 input message is sent to digital processing unit 302 No. two, receive the Control and Schedule information that No. two digital processing units 302 send simultaneously, and the Control and Schedule information receiving is sent to WIFI antenna 306 No. one;
Down-hole electrical dipole antenna 304 uploads for received well the Control and Schedule information that conductive flow field through the earth communication module 202 sends; And the Control and Schedule information receiving is sent to conduct electricity flow field, down-hole through the earth communication module 303; The underground work state information that under received well, conduct electricity flow field through the earth communication module 303 sends simultaneously, and underground work state information is launched to ground surface;
The Control and Schedule information that conduct electricity flow field, down-hole through the earth communication module 303 sends for electrical dipole antenna under received well 304, and the Control and Schedule information receiving is sent to digital processing unit 302 No. two; Receive the underground work state information that No. two digital processing units 302 send simultaneously, and underground work state information is sent to down-hole electrical dipole antenna 304;
The Control and Schedule information of No. two digital processing units 302 after for the modulation that under received well, conduct electricity flow field through the earth communication module 303 sends, carries out demodulation to the Control and Schedule information after modulation, and the Control and Schedule information after demodulation is sent to WIFI module 301 No. one; Receive on the hand-held terminal device that WIFI module 301 sends 4 locating information simultaneously and hold the information of the staff's of hand-held terminal device 4 input, and modulate, after modulation, be sent to conduct electricity flow field, down-hole through the earth communication module 303;
Supply module 305 is used to No. two digital processing units 302, WIFI module 301, No. two digital processing units 302, conduct electricity flow field, down-hole through the earth communication modules 303 to power;
Each hand-held terminal device 4 comprises No. two WIFI modules 403, No. two WIFI antennas 402, No. three processors 401, display device 407, audio frequency apparatus 406, character inputting device 404 and battery modules 405;
No. two WIFI antennas 402 are for receiving the wireless messages sending with the down-hole switching equipment 3 that self carries out wireless connections, and the wireless messages receiving is sent to WIFI module 403 No. two; Receive locating information that No. two WIFI modules 403 send and the information of staff's input simultaneously, and the information of staff's input is sent to and the down-hole switching equipment 3 that self carries out wireless connections;
The information of staff's input comprises voice messaging and the command information of text message, staff's input;
The wireless messages that No. two WIFI modules 403 send for receiving No. two WIFI antennas 402, and the wireless messages of reception is sent to processor 401 No. three, receive locating information that No. three processors 401 send and staff's input message simultaneously, and the locating information of reception and staff's input message is sent to WIFI antenna 402 No. two;
The wireless messages that No. three processors 401 send for receiving No. two WIFI modules 402, and the wireless messages of reception is sent to display device 407 and audio frequency apparatus 406; The input message of audio reception equipment 406 and character inputting device 404 simultaneously, and after input message is modulated, be sent to No. two WIFI module 403;
The wireless messages that display device 407 sends for receiving No. three processors 401, and the information receiving is shown;
Audio frequency apparatus 406 is for inputting audio signal and playing audio signal; Audio frequency apparatus comprises microphone and earphone;
Character inputting device 404 is for input text information;
Battery module 405 is used to No. three processors 401, display device 407, audio frequency apparatus 406, character inputting device 404 and No. two WIFI modules 403 to power.
Uphole equipment comprises computer, aboveground through the earth communication device, and aboveground through the earth communication device comprises digital processing unit, conduct electricity flow field through the earth communication module and communication interface.User obtains the operating state of current aboveground through the earth communication device, down-hole switch from computer, obtains the location status information of each handheld terminal of down-hole by down-hole switch, realizes the mutual of speech data by audio frequency apparatus.Computer is connected with the digital processing unit of aboveground communication system by communication interface, and the data that the instruction that digital processing unit responsive computer sends is sent with modulation computer are also transmitted into underground communica tion unit by the conduct electricity flow field through the earth communication module being connected; The signal that digital processing unit receives conduct electricity flow field through the earth communication module carries out demodulation, and demodulating data is transferred to computer.
Conduct electricity flow field through the earth communication module is diplex operation pattern, the modulation signal of digital processing unit utilizes the power amplifier of conduct electricity flow field through the earth communication module to send to underground communica tion unit through antenna, the faint conduction current field signal that under received well, communication unit is launched simultaneously, conduction current field signal is carried out to amplification filtering processing, be transferred to digital processing unit by communication interface.
Underground equipment comprises down-hole switching equipment, handheld terminal.Down-hole switching equipment comprises WIFI module, digital processing unit, conduct electricity flow field through the earth communication module.Wherein WIFI module, as the communication base station in underworkings, transfers to digital processing unit by personnel positioning information, text, voice and the command information of the handheld terminal that carries out with it Wireless Data Transmission No. two by communication interface.Conduct electricity flow field through the earth communication module is diplex operation pattern, the modulation signal of digital processing unit utilizes the power amplifier of conduct electricity flow field through the earth communication module, think that through electrical dipole antenna stratum launches, from stratum, receive faint conduction current field signal simultaneously, signal is amplified and filtering processing, be transferred in No. two digital processing units by communication interface.
No. two digital processing unit is modulated, signal is carried out to demodulation information, use routing algorithm, the information of down-hole switching equipment will be transmitted in stratum with the signal of destination address, routing link information and data message through conduct electricity flow field through the earth communication module, under perimeter well, switching equipment sends information modulation according to routing link information after receiving signal demodulation, until arrival target device is realized networking function.
Computer is installed monitoring software, and monitoring software shows current personnel positions information, can send broadcast or point-to-point information, monitor the working condition of each down-hole switching equipment; Monitoring software is connected with aboveground through the earth communication equipment by computer interface, and aboveground through the earth communication equipment does not have the requirement of volume and Power Limitation, and the corresponding energy has commercial power supply, transmitting power larger than the through the earth communication module of down-hole switching equipment.
No. two digital processor processes demodulating informations, according to information type, information is forwarded and is submitted to handheld terminal operation: when information destination address to should No. two digital processing units itself address time, No. two digital processing unit is given No. two WIFI modules by communication interface by data upload by data, signal destination address not to should No. two digital processing units itself address time, No. two digital processing unit determines the forwarding to information or abandons operation according to routing table; No. two digital processing units receive the user data of No. two WIFI modules: to data adding purpose address, routing iinformation and information type label, be transferred to conduct electricity flow field, down-hole through the earth communication module and sent after completing package operation by communication interface; No. two digital processing unit is safeguarded network routing information: No. two digital processing unit sends online heartbeat data packets at regular intervals, and near informing, down-hole switching equipment self information, refreshes routing table near down-hole switching equipment request route information; No. two digital processing unit No. two WIFI modules of connection the position of calculating the hand-held terminal device being attached thereto according to WIFI indoor positioning algorithm, thereby the positioning function of realization;
The WIFI module of down-hole switching equipment connects No. two digital processing units, WIFI module establishes a communications link as base station and multiple handheld terminal, processes and information in No. two digital processing units is mail to the hand-held terminal device of appointment receiving communication to two digital processing unit; Supply module provides electric energy for equipment, and it has two cover powering modes, in the non-emergent state of normal consistency, personnel positioning, intercommunication mutually, use connector head connect mine in power line power supply, and charge for providing energy-storage battery for oneself.When under emergency rating, power line can not normal power supply, supply module starts energy-storage battery powered operation pattern automatically.
Aboveground through the earth communication equipment be arranged on some down-hole switching equipment A directly over, ensure that the data of down-hole switching equipment of networking can and upload to aboveground through the earth communication equipment by described down-hole switching equipment A transfer.Described down-hole switching equipment horizontal arrangement is spaced apart the distance of 1/2 times that is not more than its horizontal communication distance.Be down-hole switching equipment C can by conduct electricity flow field through the earth communication module directly and down-hole switching equipment B and down-hole switching equipment A one of them set up DCL, produce routing table in normal operating conditions by No. two digital processing unit computings, every down-hole switching equipment is at interval of the routing table of certain hour down-hole switching equipment broadcast towards periphery oneself, computing forms the communication routing link of switching equipment C-down-hole, switching equipment B-down-hole, switching equipment A-down-hole, down-hole switching equipment E-down-hole, switching equipment D-down-hole switching equipment F, can not be worked as destroyed at down-hole switching equipment B equipment time, can form the communication routing link of switching equipment D-down-hole, switching equipment C-down-hole, switching equipment A-down-hole, down-hole switching equipment E-down-hole switching equipment F.Thereby ensure that communications network system can also normally be worked in the time that some down-hole switching equipment is destroyed and can not work.
The frequency channels that the conduct electricity flow field through the earth communication module of each down-hole switching equipment in the horizontal communication distance of down-hole switching equipment is used is each other different, the current field through the earth communication module that is down-hole switching equipment is divided into 5 channel CH1---CH5, cycle assignment is given each down-hole switching equipment successively in order, has avoided the phase mutual interference between the conduct electricity flow field through the earth communication module by signal of down-hole switching equipment.
Handheld terminal its carry out between the switching equipment of down-hole according to algorithm soft handover ensure communication unimpeded.Its No. two WIFI modules are connected with down-hole switching equipment as client, form communication link; Audio frequency apparatus comprises that loudspeaker and Mike's input are by audio-frequency information output or input; User is input to text message in handheld terminal by input equipment; Battery module provides power supply for handheld terminal, and in the situation that electric weight is low, sends low-voltage alarm.
Embodiment two, in conjunction with Fig. 5, present embodiment is described, present embodiment is further illustrating of and scheduler routine communications network system emergent to the mine described in embodiment one, aboveground conduct electricity flow field through the earth communication module 202 comprises digital processing unit 202-1 No. four, D/A modular converter 202-2, power amplifier module 202-3, matching network module 202-4, preposition low noise differential amplifier 202-5, band pass filter 202-6, digital Auto Gain control module 202-7, A/D modular converter 202-8, speech compression contracting circuit 202-9, speech coding decoding circuit 202-10, audio interface 202-11 and serial data mouth 202-12,
Serial data mouth 202-12 is used for connecting No. four digital processing unit 202-1 and a digital processing unit 201, realizes the transfer of data between conduct electricity flow field through the earth communication module 202 and a digital processing unit 201;
Audio interface 202-11, for being connected between the audio port of computer 1 and speech coding decoding circuit 202-10, realizes the transmission of audio signal; The voice signal that speech coding decoding circuit 202-10 sends for audio reception interface 202-11, by voice signal quantization encoding, and sends to speech compression contracting circuit 202-9 by the voice signal after quantization encoding; Receive the voice signal after speech compression contracting circuit 202-9 decompresses simultaneously, and the voice signal after decompressing is decoded, after decoding, be sent to serial data mouth 202-12;
The high speed voice data that speech compression contracting circuit 202-9 sends for receiving speech coding decoding circuit 202-10, and be low-rate data coding by high speed voice data compression, and low-rate data coding is sent to digital processing unit 202-1 No. four; Receive the low-rate data coding of No. four digital processing unit 202-1 transmissions simultaneously, and the low-rate data coding decompress(ion) of No. four digital processing unit 202-1 transmissions is condensed to high speed voice data, and high speed voice data are sent to speech coding decoding circuit 202-10;
D/A modular converter 202-2 is used for receiving the digital waveform signal of No. four digital processing unit 202-1, and digital waveform signal is converted to analog signal, and analog signal is sent to power amplifier module 202-3;
The analog signal that power amplifier module 202-3 sends for receiving D/A modular converter 202-2, and the analog signal receiving is carried out to power amplification, the analog signal after power amplification is sent to matching network module 202-4;
Matching network module 202-4 for receive power amplifier module 202-3 send power amplification after analog signal, and carry out mating of load impedance and power amplifier characteristic impedance, obtain maximum power output signal, and maximum power output signal is sent to aboveground electrical dipole antenna 204;
The analog signal that preposition low noise differential amplifier 202-5 sends for electrical dipole antenna 204 on received well, and this analog signal is carried out to inhibition and the elementary amplification of common-mode signal, and the analog signal of carrying out after common mode inhibition and elementary amplification is sent to band pass filter 202-6;
The analog signal of band pass filter 202-6 after for the common mode inhibition and the elementary amplification that receive preposition low noise differential amplifier 202-5 and send, and this analog signal is carried out to filtering, and filtered analog signal is sent to digital Auto Gain control module 202-7;
The filtered analog signal that digital Auto Gain control module 202-7 sends for reception bandpass filter 202-6, and filtered analog signal is carried out to automatic gain, and the analog signal after automatic gain is sent to A/D modular converter 202-8;
The analog signal of A/D modular converter 202-8 after for the automatic gain that receives digital Auto Gain control module 202-7 and send, and is converted to digital signal by this analog signal, and digital signal is sent to digital processing unit 202-1 No. four;
No. four digital processing unit 202-1 are for receiving the digital signal of A/D modular converter 202-8 transmission, and this signal is separated to be in harmonious proportion and store, and the low-rate data coding in demodulating data is sent to speech compression contracting circuit 202-9, the serial data in demodulating data is sent to serial data mouth 202-12;
Receive the serial data of serial data mouth 202-12 transmission and the low-rate data coding that speech compression contracting circuit 202-9 sends simultaneously, and be digital waveform by the serial data receiving and low-rate data coded modulation, and digital waveform signal is sent to D/A modular converter 202-2.
Power amplifier module, adopts the exemplary audio power amplifier connected mode of novel high-power audio frequency amplification circuit chip, the power that power amplifier module can continuous wave output 300W; Matching network in the present invention adopts transformer to realize, and its function is to realize mating of load impedance and power amplifier characteristic impedance, and the maximum that reaches power is exported.
Described preposition low noise differential amplifier, the input of this preposition low noise differential amplifier is the two ends of electrical dipole antenna, its common mode rejection circuit is realized the inhibitory action of common-mode signal, this part is carried out elementary amplification to signal simultaneously, signal gain is 6dB, for late-class circuit provides stronger carrying load ability; Band pass filter, adopt multi-disc have able to programme, band pass filter centre frequency can be set, the special chip cascade filter of filter quality factor function can be set.According to actual geology ambient conditions, centre frequency and the quality factor of filter are set by digital processing unit.
Digital Auto Gain control, can increase the reception dynamic range of receiver: in the time that input signal is too small, digital processor controls gain circuitry, realizes the process that increases amplifier gain; In the time that input signal is excessive, digital processor controls gain circuitry, realization reduces the process of the gain of amplifier.Process implementation output signal by this automatic control remains on best level state, and signal is unlikely to occur slicing or too small situation, thereby has increased the dynamic range of receiving of receiver.What in the present invention, numerical control automatic gain control 24 was used is programmable gain amplifier chip, and its gain ranging is 0-60dB.When circuit input signal changes within the scope of 10mV～10V, control and can make output signal basicly stable at 1.0V by digital processing unit 6.
Serial data port is realized with computer and is carried out data interconnection function, and user is connected and obtains and send short message data with digital processing unit by serial data port; Described audio interface, use be the 3.5mm microphone/ear-headphone interface of standard, with existing microphone/ear-headphone hardware compatibility; It is TLV320AIC10 speech coding decoding chip that described speech coding decoding circuit adopts model, realizes the function that analog voice signal is quantized; Described speech compression shrinking chip can be low-rate data coding by high speed voice data compression.Realize 2.4kbps and following speech data speed.
Described No. four digital processing units, taking FPGA as core, extend out SDRAM, and carry the soft core of NIOS.It adopts the slow mode of sending out of storage to the voice signal of compression in the time of emission state, the speech data of storage certain hour is in SDRAM, then carry out the modulation of QPSK signal, and send according to the information rate of 500bps, digital short message is encoded accordingly, then carry out QPSK modulation, and send according to the information rate of 50bps; In the time of accepting state, voice signal is carried out to coherent demodulation, and store demodulating data, by the time receive and speech data is input to after all voice signals to the lang sound decode operation of going forward side by side in speech compression shrinking chip, and voice signal is outputed to audio interface; Digital short message signal is carried out to coherent demodulation, and decoding, then output to computer by serial data interface.
Described D/A module, A/D module realize respectively the function that digital waveform signal is converted to analog signal and analog signal is converted to digital signal.Described power amplifier module, the exemplary audio power amplifier connected mode of employing novel high-power audio frequency amplification circuit chip, this chip has power output large single sheet continuous power output 75W; The little total distortion plus noise of distortion factor <0.5%; Defencive function comprises the advantages such as overvoltage protection, overtemperature protection, current limit function be complete; Power amplifier circuit is connected into BTL circuit form, and power utilization rate is high, power output is large, power that can continuous wave output 300W.
Matching network in the present invention adopts transformer to realize, and its function is to realize mating of load impedance and power amplifier characteristic impedance, and the maximum that reaches power is exported.Its frequency response can reach 300Hz-25KHz.And there are many taps, to adapt to the different impedance grounds of different mines.
Described preposition low noise differential amplifier, the input of this circuit is the two ends of aboveground electrical dipole antenna, receives faint conduction current field signal in stratum, its common mode rejection circuit is realized the inhibitory action of common-mode signal.Rear end adopts ultra-low noise, low distortion, difference amplifier chip, it is the difference of these two signals, for the effective input signal of circuit, the output of circuit is the amplification of the difference to these two input signals, this part is carried out elementary amplification to signal, and signal gain is 6dB, for late-class circuit provides stronger carrying load ability.
Band pass filter, adopt multi-disc have able to programme, band pass filter centre frequency can be set, the design of the special filter chip cascade of filter quality factor function can be set.According to actual geology ambient conditions, centre frequency and the quality factor of filter are set by digital processing unit, band pass filter can be accomplished the narrowest 150Hz of reaching of bandwidth, quality factor can be up to 64.Filter chip uses Chebyshev's mode filter to obtain more precipitous roll-offing, faster decay.
Claims (2)
1. mine is met an urgent need and a scheduler routine communications network system, comprises aboveground communication unit and underground communica tion unit, it is characterized in that; Aboveground communication unit comprises computer (1) and aboveground through the earth communication equipment (2);
Computer (1) is for Control and Schedule information being sent to aboveground through the earth communication equipment (2), and the underground work state information that on received well, through the earth communication equipment (2) sends, and underground work state information is shown;
Underground work state information comprises text message, voice messaging and the command information that the work state information of down-hole switching equipment (3), the locating information of holding hand-held terminal device (4) personnel, hand-held terminal device (4) send;
Control and Schedule information comprises voice messaging and text message;
Aboveground through the earth communication equipment (2) comprises a digital processing unit (201), aboveground conduct electricity flow field through the earth communication module (202), communication interface (203) and aboveground electrical dipole antenna (204);
The Control and Schedule information that a digital processing unit (201) sends for receiving computer (1), the Control and Schedule information that modulation computer (1) sends, and the Control and Schedule information after modulation is sent to conduct electricity flow field through the earth communication module (202), receive the underground work status signal that conduct electricity flow field through the earth communication module (202) returns simultaneously and carry out demodulation, by the underground work status signal transmission after demodulation to computer (1);
Aboveground conduct electricity flow field through the earth communication module (202) for receive a digital processing unit (201) send modulation after Control and Schedule information, and Control and Schedule information after modulation is sent to aboveground electrical dipole antenna (204), underground work status signal after the modulation that on received well, electrical dipole antenna (204) sends simultaneously, and working state signal under received well is sent to a digital processing unit (201);
Communication interface (203), for connecting a digital processing unit (201) and computer (1), realizes between a digital processing unit (201) and computer (1) and communicating;
Aboveground electrical dipole antenna (204) for receive conduct electricity flow field through the earth communication module (202) send modulation after Control and Schedule information, and this information is launched to stratum, underground work state information after the modulation that under received well, switching equipment (3) sends simultaneously, and the underground work state information after modulation is sent to aboveground conduct electricity flow field through the earth communication module (202);
Underground communica tion unit comprises N down-hole switching equipment (3) and M handheld terminal (4); Wherein, M and N are integer, and N >=4, N≤M;
Each down-hole switching equipment (3) comprises a WIFI module (301), No. two digital processing units (302), underground conduct electricity flow field through the earth communication module (303), supply module (305), down-hole electrical dipole antenna (304) and a WIFI antenna (306);
A WIFI antenna (306) for receive a WIFI module (301) send demodulation after Control and Schedule information, and by the Control and Schedule information transmitting after the demodulation receiving to self carry out on the hand-held terminal device (4) of wireless connections; The information that simultaneously receives the staff's who holds hand-held terminal device (4) input, sends to WIFI module (301) by the information of staff's input;
The information of described staff's input comprises voice messaging and the command information of text message, staff's input;
Staff's the input message that a WIFI module (301) sends for receiving a WIFI antenna (306), and the staff's who receives from a WIFI antenna (306) input message is sent to No. two digital processing units (302), receive the Control and Schedule information that No. two digital processing units (302) send simultaneously, and the Control and Schedule information receiving is sent to a WIFI antenna (306);
Down-hole electrical dipole antenna (304) uploads for received well the Control and Schedule information that conductive flow field through the earth communication module (202) sends; And the Control and Schedule information receiving is sent to conduct electricity flow field, down-hole through the earth communication module (303); The underground work state information that under received well, conduct electricity flow field through the earth communication module (303) sends simultaneously, and underground work state information is launched to ground surface;
The Control and Schedule information that conduct electricity flow field, down-hole through the earth communication module (303) sends for electrical dipole antenna under received well (304), and the Control and Schedule information receiving is sent to No. two digital processing units (302); Receive the underground work state information that No. two digital processing units (302) send simultaneously, and underground work state information is sent to down-hole electrical dipole antenna (304);
Control and Schedule information after the modulation that No. two digital processing units (302) send for conduct electricity flow field through the earth communication module (303) under received well, Control and Schedule information after modulation is carried out to demodulation, and the Control and Schedule information after demodulation is sent to a WIFI module (301); Receive the locating information of (4) on the hand-held terminal device that a WIFI module (301) sends simultaneously and hold the staff's of hand-held terminal device (4) the information of input, and modulate, after modulation, be sent to conduct electricity flow field, down-hole through the earth communication module (303);
Supply module (305) is used to No. two digital processing units (302), a WIFI module (301), No. two digital processing units (302), conduct electricity flow field, down-hole through the earth communication module (303) power supply;
Each hand-held terminal device (4) comprises No. two WIFI modules (403), No. two WIFI antennas (402), No. three processors (401), display device (407), audio frequency apparatus (406), character inputting device (404) and battery module (405);
No. two WIFI antennas (402), for receiving the wireless messages sending with the down-hole switching equipment (3) that self carries out wireless connections, and send to No. two WIFI modules (403) by the wireless messages receiving; Receive the locating information of No. two WIFI modules (403) transmission and the information of staff's input simultaneously, and the information of staff's input is sent to and the down-hole switching equipment (3) that self carries out wireless connections;
The information of staff's input comprises voice messaging and the command information of text message, staff's input;
The wireless messages that No. two WIFI modules (403) send for receiving No. two WIFI antennas (402), and the wireless messages of reception is sent to No. three processors (401), receive the locating information of No. three processors (401) transmission and staff's input message simultaneously, and the locating information of reception and staff's input message is sent to No. two WIFI antennas (402);
The wireless messages that No. three processors (401) send for receiving No. two WIFI modules (402), and the wireless messages of reception is sent to display device (407) and audio frequency apparatus (406); The input message of audio reception equipment (406) and character inputting device (404) simultaneously, and after input message is modulated, be sent to No. two WIFI modules (403);
The wireless messages that display device (407) sends for receiving No. three processors (401), and the information receiving is shown;
Audio frequency apparatus (406) is for inputting audio signal and playing audio signal; Audio frequency apparatus comprises microphone and earphone;
Character inputting device (404) is for input text information;
Battery module (405) is used to No. three processors (401), display device (407), audio frequency apparatus (406), character inputting device (404) and No. two WIFI modules (403) power supply.
2. a kind of mine according to claim 1 is met an urgent need and scheduler routine communications network system, it is characterized in that: described aboveground conduct electricity flow field through the earth communication module (202) comprises No. four digital processing units (202-1), D/A modular converter (202-2), power amplifier module (202-3), matching network module (202-4), preposition low noise differential amplifier (202-5), band pass filter (202-6), digital Auto Gain control module (202-7), A/D modular converter (202-8), speech compression contracting circuit (202-9), speech coding decoding circuit (202-10), audio interface (202-11) and serial data mouth (202-12),
Serial data mouth (202-12), for connecting No. four digital processing units (202-1) and a digital processing unit (201), is realized the transfer of data between conduct electricity flow field through the earth communication module (202) and a digital processing unit (201);
Audio interface (202-11), for being connected between the audio port of computer (1) and speech coding decoding circuit (202-10), realizes the transmission of audio signal; The voice signal that speech coding decoding circuit (202-10) sends for audio reception interface (202-11), by voice signal quantization encoding, and the voice signal after quantization encoding is sent to speech compression contracting circuit (202-9); Receive the voice signal after speech compression contracting circuit (202-9) decompresses simultaneously, and the voice signal after decompressing is decoded, after decoding, be sent to serial data mouth (202-12);
The high speed voice data that speech compression contracting circuit (202-9) sends for receiving speech coding decoding circuit (202-10), and be low-rate data coding by high speed voice data compression, and low-rate data coding is sent to No. four digital processing units (202-1); Receive the low-rate data coding that No. four digital processing units (202-1) send simultaneously, and the low-rate data coding decompress(ion) of No. four digital processing units (202-1) transmission is condensed to high speed voice data, and high speed voice data are sent to speech coding decoding circuit (202-10);
D/A modular converter (202-2) is for receiving the digital waveform signal of No. four digital processing units (202-1), and digital waveform signal is converted to analog signal, and analog signal is sent to power amplifier module (202-3);
The analog signal that power amplifier module (202-3) sends for receiving D/A modular converter (202-2), and the analog signal receiving is carried out to power amplification, the analog signal after power amplification is sent to matching network module (202-4);
Matching network module (202-4) for receive power amplifier module (202-3) send power amplification after analog signal, and carry out mating of load impedance and power amplifier characteristic impedance, obtain maximum power output signal, and maximum power output signal is sent to aboveground electrical dipole antenna (204);
The analog signal that preposition low noise differential amplifier (202-5) sends for electrical dipole antenna on received well (204), and analog signal is carried out to inhibition and the elementary amplification of common-mode signal, and the analog signal of carrying out after common mode inhibition and elementary amplification is sent to band pass filter (202-6);
Band pass filter (202-6) for receive preposition low noise differential amplifier (202-5) send common mode inhibition and elementary amplification after analog signal, and this analog signal is carried out to filtering, and filtered analog signal is sent to digital Auto Gain control module (202-7);
The filtered analog signal that digital Auto Gain control module (202-7) sends for reception bandpass filter (202-6), and filtered analog signal is carried out to automatic gain, and the analog signal after automatic gain is sent to A/D modular converter (202-8);
A/D modular converter (202-8) for receive digital Auto Gain control module (202-7) send automatic gain after analog signal, and this analog signal is converted to digital signal, digital signal is sent to No. four digital processing units (202-1);
The digital signal that No. four digital processing units (202-1) send for receiving A/D modular converter (202-8), and this signal is separated to be in harmonious proportion and store, and the low-rate data coding in demodulating data is sent to speech compression contracting circuit (202-9), the serial data in demodulating data is sent to serial data mouth (202-12);
Receive the serial data of serial data mouth (202-12) transmission and the low-rate data coding that speech compression contracting circuit (202-9) sends simultaneously, and be digital waveform by the serial data receiving and low-rate data coded modulation, and digital waveform signal is sent to D/A modular converter (202-2).
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| CN105306087A (en) * | 2015-11-10 | 2016-02-03 | 中煤科工集团重庆研究院有限公司 | Mining three-component magnetic wave bidirectional ground-penetrating monitoring and early-warning command system and method |
| CN105871476B (en) * | 2016-05-04 | 2019-01-15 | 哈尔滨工程大学 | Level is laid with the electromagnetic wireless ground through communication system of antenna |
| CN105871476A (en) * | 2016-05-04 | 2016-08-17 | 哈尔滨工程大学 | Electromagnetic wireless through-the-earth communication system for horizontally laying antennas |
| CN107785012B (en) * | 2016-08-26 | 2021-11-30 | 中国石油化工股份有限公司 | Control method of sound control driller display |
| CN107785012A (en) * | 2016-08-26 | 2018-03-09 | 中国石油化工股份有限公司 | A kind of control method of acoustic control driller display |
| CN106788558B (en) * | 2016-11-22 | 2019-06-11 | 北京信息科技大学 | A kind of ground through communication system |
| CN106788558A (en) * | 2016-11-22 | 2017-05-31 | 北京信息科技大学 | A kind of ground through communication system |
| CN107529153A (en) * | 2017-10-19 | 2017-12-29 | 中国矿业大学(北京) | full mine emergency communication system |
| CN107529153B (en) * | 2017-10-19 | 2023-11-28 | 中国矿业大学(北京) | Emergency communication system for whole mine |
| CN109144213A (en) * | 2018-06-29 | 2019-01-04 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling land D with reset function |
| CN108718208A (en) * | 2018-06-29 | 2018-10-30 | 河南中多科技发展有限公司 | Communicating circuit under a kind of rolling lands D |
| CN109144213B (en) * | 2018-06-29 | 2020-06-30 | 河南中多科技发展有限公司 | D-wave underground communication circuit with reset function |
| CN108718208B (en) * | 2018-06-29 | 2024-04-09 | 河南中多科技发展有限公司 | D wave underground communication circuit |
| CN111106876A (en) * | 2018-10-10 | 2020-05-05 | 北京信息科技大学 | Method and device used in tunnel rescue communication |
| CN111628829A (en) * | 2019-02-28 | 2020-09-04 | 北京信息科技大学 | Method and device for node equipment for tunnel communication |
| CN113708848A (en) * | 2021-08-05 | 2021-11-26 | 西安电子科技大学 | Elastic guided wave wireless communication system and method based on underground pipeline |
| CN115086938A (en) * | 2022-06-08 | 2022-09-20 | 伟卓石油科技(北京)有限公司 | Through-the-earth emergency wireless communication device and system |
| CN115529058A (en) * | 2022-06-16 | 2022-12-27 | 中煤科工集团西安研究院有限公司 | Mining emergency wireless communication device and communication method |
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