CN108518244B - Mining through-the-earth communication system based on ultra-low frequency transmission - Google Patents
Mining through-the-earth communication system based on ultra-low frequency transmission Download PDFInfo
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- CN108518244B CN108518244B CN201810132162.9A CN201810132162A CN108518244B CN 108518244 B CN108518244 B CN 108518244B CN 201810132162 A CN201810132162 A CN 201810132162A CN 108518244 B CN108518244 B CN 108518244B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Abstract
The invention discloses a mining through-the-earth communication system based on ultra-low frequency transmission, which comprises an underground radio station operation center, a ground mobile communication station and a rescue command center, wherein various sensors are preset underground; the underground radio station operation center comprises a wrist strap type mobile terminal and an underground radio station; the ground mobile communication station comprises a tablet computer terminal and a local radio station; the rescue command center is used for carrying out real-time data communication with the ground mobile communication station, is responsible for data analysis and storage, and can interactively command the work with personnel at the ground mobile communication station in real time. In a word, the invention constructs a data, voice and short message communication system integrating underground personnel, a ground mobile communication station and a rescue command center, greatly improves the reliability of the mine production rescue communication system, and can realize voice through-the-earth transmission of 200 meters and data and short message through-the-earth transmission of 300 meters.
Description
Technical Field
The invention relates to the technical field of through-the-earth communication, in particular to a mining through-the-earth communication system based on ultra-low frequency transmission.
Background
The mining safety production plays a vital role in economic development and energy storage, the smooth communication of a mine is an important guarantee for the mining safety production and quick and effective rescue after disasters, the communication system applied to the mining production rescue at present is mainly divided into a wired communication system and a wireless communication system, the wired communication system plays a vital role in the daily production of the mine, and when an accident occurs, the wired line equipment is easily damaged and is in a paralyzed state; the through-the-earth communication system plays an increasingly important role in mining safety production and underground accident rescue due to the characteristics of high reliability and strong survival capability in accidents.
The mainstream ground penetrating communication technology mainly comprises three directions, namely an elastic wave ground penetrating communication technology based on mechanical vibration waves, an electric field ground penetrating communication technology based on ground electrode current injection and a magnetic field ground penetrating communication technology based on antenna near field induction. The magnetic field through-the-earth communication technology based on antenna near-field induction is the main research direction of foreign scholars at present, and has achieved certain research results. In any communication mode, the working frequency is in a very low frequency, an ultra-low frequency or a lower frequency band, and the propagation of waves in the earth medium cannot be avoided. The reason is that the absorption and attenuation of the earth formation to the transmission of electromagnetic waves, especially high-frequency electromagnetic waves, are very serious, so that the current mainly-used wireless communication system cannot be applied to mine production rescue communication.
Therefore, in order to solve the problems, a reliable through-the-earth communication system suitable for the field of underground natural resource exploitation needs to be designed, which is helpful for ensuring the safe operation of production work and can quickly know the underground situation when a mine accident happens so as to timely carry out rescue work, thereby reducing casualties to the maximum extent.
Disclosure of Invention
The invention solves the technical problem that the invention provides a mine through-the-earth communication system based on ultra-low frequency transmission for solving the technical problem.
The invention has the technical scheme that the mining through-the-earth communication system based on ultra-low frequency transmission comprises an underground radio station operation center, a ground mobile communication station and a rescue command center, wherein various sensors are preset underground; the underground radio station operation center comprises a wrist strap type mobile terminal and an underground radio station, wherein the wrist strap type mobile terminal and the underground radio station are in bidirectional communication through WiFi, the underground radio station comprises an input/output module, a decoding and coding module, a DPSK/FM modulation and demodulation module, an amplifier module and a WiFi network module, the input/output module, the decoding and coding module, the DPSK/FM modulation and demodulation module and the amplifier module are sequentially connected, the input/output module is used for inputting and outputting data with the wrist strap type mobile terminal, the decoding and coding module is used for coding characters, numbers, voice and other objects into a form which is favorable for transmission and identifying and reading, the DPSK/FM modulation and demodulation module is used for converting digital baseband signals into digital modulation signals suitable for transmission of special low-frequency channels and reducing the received digital band signals into digital baseband signals, the amplifier module is used for amplifying the data signals so as to improve the quality and stability of transmission, and the WiFi network module is used for establishing network connection for underground equipment; the ground mobile communication station comprises a tablet personal computer terminal and a local radio station, wherein the local radio station comprises an input/output display module, a data receiving/transmitting module and an ARQ automatic retransmission module, the input/output display module and the ARQ automatic retransmission module are connected with the data receiving/transmitting module, the input/output display module is used for inputting and outputting data between the input/output display module and the tablet personal computer terminal, the data receiving/transmitting module is used for receiving or transmitting data to realize butt joint transfer of the data, the ARQ automatic retransmission module is used for ensuring detection and automatic retransmission of data transmission interruption, data communication is carried out between the tablet personal computer terminal and the local radio station through WiFi, and the local radio station and the underground radio station carry out data communication through ultra-low frequency; the rescue command center is used for carrying out real-time data communication with the ground mobile communication station, is responsible for data analysis and storage, and can interactively command work with personnel at the ground mobile communication station in real time.
Further, the sensor mainly includes dust sensor and gas sensor, but not only is limited to these two kinds, radio station and sensor carry out data communication transmission based on wiFi in the pit also, wherein be equipped with wiFi relay amplifier between sensor and the radio station in the pit, be equipped with wiFi relay amplifier and can effectually enlarge wiFi and make transmission distance farther, the effectual scope nature that improves the wiFi and cover, also further improvement the reliability of rescue commander.
Furthermore, voice and short message communication can be carried out between the wrist strap type mobile terminals by utilizing the WiFi network of the underground radio station.
Further, the wrist strap type mobile terminal mainly comprises a device disc, a protective cover, a flexible wrist strap and a processing module; the front side surface of the device disc is provided with a xenon lamp, the lower bottom surface of the device disc is in an arc shape, the center of the device disc is provided with a heart rate detection lamp, the upper surface of the device disc is sequentially provided with a sound raising port and a display screen from left to right, the right end of the display screen is provided with a positioning key, a light bar switch key, a multifunctional key and a microphone port, the positioning key and the light bar switch key are positioned at the right lower end of the upper surface of the device disc, the multifunctional key and the microphone port are sequentially positioned at the upper sides of the positioning key and the light bar switch key, and the left side surface and the right side; the bottom surface of the protective cover is provided with a sponge protective layer, the upper end of the sponge protective layer is provided with an anti-impact protective layer, the interior of the anti-impact protective layer is of a dense and uniform honeycomb net structure, and the center of the top surface of the protective cover is provided with a hinge shaft; an inner interlayer is arranged in the flexible wrist strap, the inner interlayer is provided with a plurality of identical hollow chambers, each hollow chamber is filled with a flexible small ball, a magnetic attraction buckle a and a magnetic attraction buckle b are arranged at the joint of the flexible wrist strap, and a convex-concave groove is arranged in the middle of the joint of the magnetic attraction buckle a and the magnetic attraction buckle b; the processing module comprises a receiving and sending module, a processing and analyzing module, a display module, an audio input/output module and an input module, the receiving and sending module, the display module, the audio input/output module and the input module are connected with the processing and analyzing module, the display module is connected with a display screen, the audio input/output module is connected with the sound-emitting port and the microphone port, the input module is connected with the positioning key, the light bar switch key and the multifunctional key, the receiving and sending module is used for transmitting and receiving data with a downhole radio station, the display module is used for converting and displaying text information on the display screen, the audio input/output module is used for converting and outputting audio information at the sound-emitting port and analyzing and identifying the audio information input at the microphone port, the input module is used for identifying and converting a control button instruction, and the requirement of a use environment can be effectively improved by adopting the wrist band device, make more reliable with the communication at rescue center to easy operation can play the guard action to the wrist through the cooperation effect of empty room and flexible bobble, and wears more comfortablely, and can accurately know personnel's life sign in the pit.
Furthermore, the wrist strap type mobile terminal is used by wearing the wrist strap type mobile terminal on a wrist through the magnetic attraction buckle a and the magnetic attraction buckle b, when rescue command information is received, the xenon lamp can flash for two times for reminding, a user can operate the wrist strap type mobile terminal in a long-time pressing mode or a multi-time pressing mode, voice communication can be carried out through long-time pressing, preset information can be sent through one key through multi-time pressing, in an emergency, the xenon lamp can be used for lighting, the current position can be automatically positioned and sent to a rescue center through pressing of the positioning key, and the heart rate detection lamp can detect the heart rate of the wearer and brings guiding decision for rescue.
Furthermore, the DPSK/FM modulation and demodulation module comprises a modulation module and a demodulation module, wherein the modulation module comprises an ultra-low frequency coding modulation module, a differential coding module, a DPSK subcarrier modulation module and a secondary FM modulation module which are sequentially connected; the DPSK subcarrier modulation module is used for carrying out DPSK subcarrier modulation on the differentially encoded signals and sending the output modulation signals to the secondary FM modulation module, and the secondary FM modulation module is used for carrying out FM secondary modulation on the DPSK subcarrier modulation signals.
Furthermore, the rescue command center uses a 4G network to carry out real-time data communication with a ground mobile communication station, voice and short message communication with underground personnel can be realized through forwarding of the local radio station, the transmission speed of the 4G network is high, and the limitation of the use environment is small.
Furthermore, the through-the-earth communication system supports three communication services of voice, data and preset short messages, can realize the through-the-earth transmission of voice with the depth of 200 meters and the through-the-earth transmission of short messages and data with the depth of 300 meters, and has the advantages of high transmission efficiency, good stability and deep transmission depth in ultra-low frequency.
Furthermore, the through-the-earth communication system is powered by a 24V lithium battery, and the standby time is about 7 days.
A mining through-the-earth communication system based on ultra-low frequency transmission comprises the following working steps:
(1) in daily work of the through-the-earth communication system, the dust sensor and the gas sensor transmit detected data to the underground radio station through the wifi relay amplifier;
(2) the underground radio station transmits data to the local radio station through an ultralow frequency channel, the ground mobile communication station transmits the data to the rescue command center through a 4G network, a plurality of underground personnel can also carry out voice and short message communication with each other through a worn wrist strap type mobile terminal by utilizing a WiFi network, and meanwhile, the wrist strap type mobile terminal can carry out voice and short message communication with the rescue command center;
(3) the command rescue center analyzes and appoints the rescue command information and sends the rescue command information to the ground mobile communication station, the rescue command information is transmitted to the underground radio station through the local radio station through the ultra-low frequency, and meanwhile, the rescue command center can send information to underground personnel through the ground mobile communication station or carry out voice talkback command rescue, so that a communication system integrating the underground personnel, the ground mobile communication station and the command center is established.
The invention has the beneficial effects that:
(1) the invention constructs a data, voice and short message communication system integrating underground personnel, a ground mobile communication station and a rescue command center, and greatly improves the reliability of the mine production rescue communication system.
(2) The through-the-earth communication system adopts ultra-low frequency transmission, and can realize the through-the-earth transmission of voice with the depth of 200 meters and the through-the-earth transmission of data and short messages with the depth of 300 meters.
(3) The wrist strap type mobile terminal can effectively improve the requirements of the use environment, enables the communication with the rescue center to be more reliable, is simple to operate, can play a role in protecting the wrist through the matching effect of the empty chamber and the flexible ball, is more comfortable to wear, and can accurately know the life signs of the personnel going into the well.
(4) The invention effectively improves the transmission efficiency through the DPSK/FM modulation and demodulation module and ensures the zero delay of information communication.
(5) The WiFi relay amplifier is arranged, so that WiFi can be effectively amplified, the transmission distance is longer, the WiFi coverage range is effectively enlarged, and the reliability of rescue command is further improved.
Drawings
Fig. 1 is a system architecture diagram of a through-the-earth communication system of the present invention.
Fig. 2 is a block diagram of the system for through-the-earth communication of the present invention.
Fig. 3 is a schematic view of the overall structure of the wrist-worn mobile terminal of the present invention.
Fig. 4 is a plan view of the wrist-worn mobile terminal body of the present invention.
The device comprises a device disc, an 11-xenon lamp, a 12-heart rate detection lamp, a 13-sliding rail, a 14-sound raising port, a 15-display screen, a 16-positioning key, a 17-lamp bar switch key, an 18-multifunctional key, a 19-microphone port, a 2-protective cover, a 21-sponge protective layer, a 22-impact-resistant protective layer, a 23-hinge shaft, a 3-flexible wrist strap, a 31-inner interlayer, a 311-hollow chamber, a 312-flexible small ball, a 32-magnetic attraction button a, a 33-magnetic attraction button b, a 41-data receiving and transmitting module, a 42-processing analysis module, a 43-display module, a 44-audio input and output module and a 45-input module.
Detailed Description
As shown in fig. 1 and 2, the mining through-the-earth communication system based on ultra-low frequency transmission comprises an underground radio station operation center, a ground mobile communication station and a rescue command center, various sensors are preset underground, including a dust sensor and a gas sensor, but not limited to the two sensors, the through-the-earth communication system adopts a 24V lithium battery for power supply, and the standby time is about 7 days; the underground radio station operation center comprises a wrist strap type mobile terminal and an underground radio station, bidirectional communication of voice and short messages is carried out between the wrist strap type mobile terminal and the underground radio station through WiFi, a WiFi relay amplifier is arranged between a sensor and the underground radio station, the WiFi relay amplifier is arranged, WiFi can be effectively amplified, the transmission distance is further, the coverage of WiFi is effectively improved, and the reliability of rescue command is further improved. The underground radio station comprises an input/output module, a decoding and coding module, a DPSK/FM modulation and demodulation module, an amplifier module and a WiFi network module, wherein the input/output module, the decoding and coding module, the DPSK/FM modulation and demodulation module and the amplifier module are sequentially connected, the input/output module is used for inputting and outputting data between the underground radio station and a wrist strap type mobile terminal, the decoding and coding module is used for coding characters, numbers, voice and other objects into a form which is favorable for transmission and identifying and reading, the DPSK/FM modulation and demodulation module is used for converting digital baseband signals into digital modulation signals suitable for ultra-low frequency channel transmission and reducing received digital band signals into digital baseband signals, the DPSK/FM modulation and demodulation module comprises two parts, and the modulation module comprises an ultra-low frequency coding modulation module, a differential coding module, an amplifier module and a, The DPSK subcarrier modulation module and the secondary FM modulation module; the DPSK subcarrier modulation module is used for performing DPSK subcarrier modulation on the differentially encoded signals and sending the output modulation signals to the secondary FM modulation module, and the secondary FM modulation module is used for performing FM secondary modulation on the DPSK subcarrier modulation signals; the amplifier module is used for amplifying the data signals so as to improve the transmission quality and stability, and the WiFi network module is used for establishing network contact for underground equipment; the ground mobile communication station comprises a tablet personal computer terminal and a local radio station, wherein the local radio station comprises an input/output display module, a data receiving/transmitting module and an ARQ automatic retransmission module, the input/output display module and the ARQ automatic retransmission module are connected with the data receiving/transmitting module, the input/output display module is used for inputting and outputting data between the input/output display module and the tablet personal computer terminal, the data receiving/transmitting module is used for receiving or transmitting data to realize butt joint transfer of the data, the ARQ automatic retransmission module is used for ensuring detection and automatic retransmission of data transmission interruption, data communication is carried out between the tablet personal computer terminal and the local radio station through WiFi, and data communication is carried out between the local radio station and a downhole radio; the rescue command center uses the 4G network to carry out real-time data communication with the ground mobile communication station, the voice and short message communication with underground personnel can be realized by forwarding of the local radio station, the 4G network has high transmission speed and small limitation on use environment, is responsible for data analysis and storage, and can carry out real-time interactive command work with the ground mobile communication station personnel, the through-the-earth communication system supports three communication services of voice, data and preset short message, and can realize voice through-the-earth transmission with the depth of 200 meters and short message and data through-the-earth transmission with the depth of 300 meters.
As shown in fig. 3 and 4, the wristband type mobile terminal mainly includes a device tray 1, a protective cover 2, a flexible wristband 3, and a processing module 4; the front side surface of the device disc 1 is provided with a xenon lamp 11, the lower bottom surface of the device disc 1 is in an arc shape, the center is provided with a heart rate detection lamp, the upper surface of the device disc 1 is sequentially provided with a sound raising port 14 and a display screen 15 from left to right, the right end of the display screen 15 is provided with a positioning key 16, a light bar switch key 17, a multifunctional key 18 and a microphone port 19, the positioning key 16 and the light bar switch key 17 are positioned at the right lower end of the upper surface of the device disc 1, the multifunctional key 18 and the microphone port 19 are sequentially positioned at the upper sides of the positioning key 16 and the light bar switch key 17, and the left side surface and the right side surface of the; the bottom surface of the protective cover 2 is provided with a sponge protective layer 21, the upper end of the sponge protective layer 21 is provided with an anti-impact protective layer 22, the interior of the anti-impact protective layer 22 is of a dense and uniform honeycomb net structure, and the center of the top surface of the protective cover 2 is provided with a hinge shaft 23; an inner interlayer 31 is arranged in the flexible wrist strap 3, the inner interlayer 31 is provided with a plurality of identical hollow chambers 311, each hollow chamber 311 is filled with a flexible small ball 312, a magnetic attraction buckle a32 and a magnetic attraction buckle b33 are arranged at the joint of the flexible wrist strap 3, and a convex-concave groove is arranged in the middle of the joint of the magnetic attraction buckle a32 and the magnetic attraction buckle b 33; the processing module comprises a receiving and sending module, a processing and analyzing module, a display module, an audio input/output module and an input module, the receiving and sending module, the display module, the audio input/output module and the input module are connected with the processing and analyzing module, the display module is connected with a display screen 15, the audio input/output module is connected with a loudspeaker port 14 and a microphone port 19, the input module is connected with a positioning key 16, a light bar switch key 17 and a multifunctional key 18, the receiving and sending module is used for transmitting and receiving data with a downhole radio station, the display module is used for converting and displaying text information on the display screen 15, the audio input/output module is used for converting and outputting audio information input at the loudspeaker port 14 and analyzing and identifying the audio information input at the microphone port 19, the input module is used for identifying and converting control button instructions, and the requirements of a use environment can be effectively improved by adopting the, make more reliable with the communication at rescue center to easy operation can play the guard action to the wrist through the cooperation effect of empty room and flexible bobble, and wears more comfortablely, and can accurately know personnel's life sign in the pit.
The application method of the wrist strap type mobile terminal comprises the steps that the wrist strap type mobile terminal is worn on a wrist through the magnetic attraction buckle a32 and the magnetic attraction buckle b33, when rescue command information is received, the xenon lamp 11 can flash for two times for reminding, a user can operate the wrist strap type mobile terminal in a long-time pressing mode or a multi-time pressing mode, voice communication can be carried out when the user presses the wrist strap type mobile terminal for a long time, preset information can be sent by pressing the xenon lamp 11 for a single time, in an emergency, the light bar switch key 17 can be pressed to use the xenon lamp 11 for illumination, the current position can be automatically located and sent to a rescue center when the user presses the positioning key 16, the heart rate detection lamp 12 can detect the heart rate of the wearer, and guiding decision.
The mining through-the-earth communication system based on the ultra-low frequency transmission comprises the following working steps:
(1) in daily work of the through-the-earth communication system, the dust sensor and the gas sensor transmit detected data to an underground radio station through the wifi relay amplifier;
(2) the underground radio station transmits data to a local radio station through an ultralow frequency channel, the ground mobile communication station transmits the data to a rescue command center through a 4G network, a plurality of underground personnel can also carry out voice and short message communication with each other through a worn wrist strap type mobile terminal by utilizing a WiFi network, and meanwhile, the wrist strap type mobile terminal can carry out voice and short message communication with the rescue command center;
(3) the command rescue center sends rescue command information to the ground mobile communication station after analyzing and specifying, the rescue command information is transmitted to the underground radio station through the local radio station through the ultra-low frequency, and meanwhile, the rescue command center can send messages to underground personnel through the ground mobile communication station or carry out voice talkback command rescue, so that a communication system integrating the underground personnel, the ground mobile communication station and the command center is established.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; 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 (7)
1. A mining through-the-earth communication system based on ultra-low frequency transmission is characterized by comprising an underground radio station operation center, a ground mobile communication station and a rescue command center, wherein various sensors are preset underground; the underground radio station operation center comprises a wrist strap type mobile terminal and an underground radio station, wherein the wrist strap type mobile terminal and the underground radio station are in bidirectional communication through WiFi, the underground radio station comprises an input/output module, a decoding and coding module, a DPSK/FM modulation and demodulation module, an amplifier module and a WiFi network module, the input/output module, the decoding and coding module, the DPSK/FM modulation and demodulation module and the amplifier module are sequentially connected, the input/output module is used for inputting and outputting data with the wrist strap type mobile terminal, the decoding and coding module is used for coding characters, numbers, voice and other objects into a form which is favorable for transmission and identifying and reading, the DPSK/FM modulation and demodulation module is used for converting digital baseband signals into digital modulation signals suitable for transmission of special low-frequency channels and reducing the received digital band signals into digital baseband signals, the amplifier module is used for amplifying the data signals to improve the transmission quality and stability, and the WiFi is used for establishing network contact for underground equipment; the ground mobile communication station comprises a tablet personal computer terminal and a local radio station, wherein the local radio station comprises an input/output display module, a data receiving/transmitting module and an ARQ automatic retransmission module, the input/output display module and the ARQ automatic retransmission module are connected with the data receiving/transmitting module, the input/output display module is used for inputting and outputting data between the input/output display module and the tablet personal computer terminal, the data receiving/transmitting module is used for receiving or transmitting data to realize butt joint transfer of the data, the ARQ automatic retransmission module is used for ensuring detection and automatic retransmission of data transmission interruption, data communication is carried out between the tablet personal computer terminal and the local radio station through WiFi, and the local radio station and the underground radio station carry out data communication through ultra-low frequency; the rescue command center is used for carrying out real-time data communication with the ground mobile communication station, is responsible for data analysis and storage, and can interactively command work with personnel at the ground mobile communication station in real time;
the wrist strap type mobile terminal mainly comprises a device disc (1), a protective cover (2), a flexible wrist strap (3) and a processing module; the device is characterized in that a xenon lamp (11) is arranged on the front side face of the device disc (1), the lower bottom face of the device disc (1) is in an arc shape, a heart rate detection lamp is arranged in the center, a sound raising port (14) and a display screen (15) are sequentially arranged on the upper surface of the device disc (1) from left to right, a positioning key (16), a light bar switch key (17), a multifunctional key (18) and a microphone port (19) are arranged at the right lower end of the upper surface of the device disc (1), the multifunctional key (18) and the microphone port (19) are sequentially arranged on the upper sides of the positioning key (16) and the light bar switch key (17), and a slide rail (13) is respectively arranged on the left side face and the right side face of the device disc (1); a sponge protective layer (21) is arranged on the bottom surface of the protective cover (2), an impact-resistant protective layer (22) is arranged at the upper end of the sponge protective layer (21), the interior of the impact-resistant protective layer (22) is of a dense and uniform honeycomb net-shaped structure, and a hinge shaft (23) is arranged in the center of the top surface of the protective cover (2); an inner interlayer (31) is arranged in the flexible wrist strap (3), the inner interlayer (31) is provided with a plurality of identical hollow chambers (311), each hollow chamber (311) is filled with a flexible small ball (312), a magnetic attraction buckle a (32) and a magnetic attraction buckle b (33) are arranged at the joint of the flexible wrist strap (3), and a convex-concave groove is arranged in the middle of the joint of the magnetic attraction buckle a (32) and the magnetic attraction buckle b (33); the processing module comprises a receiving and sending module, a processing and analyzing module, a display module, an audio input/output module and an input module, the receiving and sending module, the display module, the audio input/output module and the input module are connected with the processing and analyzing module, the display module is connected with a display screen, the audio input/output module is connected with the sound-raising port (14) and the microphone port (19), the input module is connected with the positioning key (16), the light bar switch key (17) and the multifunctional key (18), the receiving and sending module is used for transmitting and receiving data with the underground radio station, the display module is used for converting and displaying text information on the display screen (15), and the audio input/output module is used for converting and outputting audio information input at the sound-raising port (14) and analyzing and identifying the microphone port (19), the input module is used for identifying and converting the control button command;
the application method of the wrist strap type mobile terminal comprises the steps that the wrist strap type mobile terminal is worn on a wrist through a magnetic suction buckle a and a magnetic suction buckle b, when rescue command information is received, a xenon lamp can flash for two times of reminding, a user can operate in a long-time pressing mode or a multi-time pressing mode, the long-time pressing mode can carry out voice communication, the multi-time pressing mode can send preset information through one key, in an emergency, the xenon lamp can be used for lighting, the current position can be automatically positioned and sent to a rescue center when a positioning key is pressed, a heart rate detection lamp can detect the heart rate of a wearer, and guiding decision is brought to rescue;
the DPSK/FM modulation and demodulation module comprises two major parts, namely a modulation module and a demodulation module, wherein the modulation module comprises an ultra-low frequency coding modulation module, a differential coding module, a DPSK subcarrier modulation module and a secondary FM modulation module which are sequentially connected; the DPSK subcarrier modulation module is used for carrying out DPSK subcarrier modulation on the differentially encoded signals and sending the output modulation signals to the secondary FM modulation module, and the secondary FM modulation module is used for carrying out FM secondary modulation on the DPSK subcarrier modulation signals;
the working steps are as follows:
(1) in daily work of the through-the-earth communication system, the dust sensor and the gas sensor transmit detected data to the underground radio station through the wifi relay amplifier;
(2) the underground radio station transmits data to the local radio station through an ultralow frequency channel, the ground mobile communication station transmits the data to the rescue command center through a 4G network, a plurality of underground personnel can also carry out voice and short message communication with each other through a worn wrist strap type mobile terminal by utilizing a WiFi network, and meanwhile, the wrist strap type mobile terminal can carry out voice and short message communication with the rescue command center;
(3) the rescue command center sends rescue command information to the ground mobile communication station after analyzing and specifying, the rescue command information is transmitted to the underground radio station through the local radio station through the ultra-low frequency, and meanwhile, the rescue command center can send messages to underground personnel through the ground mobile communication station or carry out voice talkback command rescue, so that a communication system integrating the underground personnel, the ground mobile communication station and the command center is established.
2. The mining through-the-earth communication system based on the ultra-low frequency transmission is characterized in that the underground radio station and the sensor also carry out data communication transmission based on WiFi, wherein a WiFi relay amplifier is arranged between the sensor and the underground radio station.
3. The mining through-the-earth communication system based on ultra-low frequency transmission of claim 1, characterized in that the dust sensor and the gas sensor are in data communication transmission with a down-hole radio station based on WiFi.
4. The mining through-the-earth communication system based on ultra-low frequency transmission as claimed in claim 1, wherein the wrist-worn mobile terminals can use the WiFi network of the underground radio station to perform voice and short message communication with each other.
5. The mining through-the-earth communication system based on the ultra-low frequency transmission is characterized in that the rescue command center uses a 4G network to carry out real-time data communication with a ground motor-driven communication station, and voice and short message communication with underground personnel can be realized through forwarding of the local radio station.
6. The mining through-the-earth communication system based on the ultra-low frequency transmission is characterized in that the through-the-earth communication system supports three communication services of voice, data and preset short message.
7. The mining through-the-earth communication system based on ultra-low frequency transmission according to claim 1, characterized in that the through-the-earth communication system is powered by a 24V lithium battery.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944996A (en) * | 1974-08-05 | 1976-03-16 | Kennecott Copper Corporation | Telemetry alarm system |
| CN103200220A (en) * | 2013-02-07 | 2013-07-10 | 工田矿山通信科技(北京)有限公司 | Mine two-way through ground communication/emergency rescue command and dispatch communication system and device |
| CN103312421A (en) * | 2013-07-08 | 2013-09-18 | 高铭 | Safe refuging wireless ground penetrating communication system for mine |
| CN104989452A (en) * | 2015-06-16 | 2015-10-21 | 南华大学 | Wireless underground miner positioning and construction area environment safety intelligent monitoring system |
-
2018
- 2018-02-09 CN CN201810132162.9A patent/CN108518244B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3944996A (en) * | 1974-08-05 | 1976-03-16 | Kennecott Copper Corporation | Telemetry alarm system |
| CN103200220A (en) * | 2013-02-07 | 2013-07-10 | 工田矿山通信科技(北京)有限公司 | Mine two-way through ground communication/emergency rescue command and dispatch communication system and device |
| CN103312421A (en) * | 2013-07-08 | 2013-09-18 | 高铭 | Safe refuging wireless ground penetrating communication system for mine |
| CN104989452A (en) * | 2015-06-16 | 2015-10-21 | 南华大学 | Wireless underground miner positioning and construction area environment safety intelligent monitoring system |
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| CN108518244A (en) | 2018-09-11 |
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