CN202696584U - Wireless communication system used for mine - Google Patents
Wireless communication system used for mine Download PDFInfo
- Publication number
- CN202696584U CN202696584U CN 201220370515 CN201220370515U CN202696584U CN 202696584 U CN202696584 U CN 202696584U CN 201220370515 CN201220370515 CN 201220370515 CN 201220370515 U CN201220370515 U CN 201220370515U CN 202696584 U CN202696584 U CN 202696584U
- Authority
- CN
- China
- Prior art keywords
- wireless communication
- communication system
- signal
- modulator
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a wireless communication system used for a mine. The wireless communication system used for the mine comprises an emission device and one or more portable reception devices, wherein the emission device comprises a continuous phase frequency shift keying type modulator and a high-power transmitter, wherein the wireless communication system further comprises a computer and a radio paging system coding type encoder; the computer edits and deals with messages needed to be sent out and outputs the messages to the encoder; the encoder processes the messages into binary system digital signals and outputs the digital signals to the modulator; then the modulator modulates the binary number 0 into a first frequency signal and the binary number 1 as a second frequency signal, and then outputs the frequency signals to the high-power transmitter to be transmitted. The high-power transmitter comprises a multi-level amplifier, an annular antenna and the like; the reception device comprises a reception circuit, a continuous phase frequency shift keying type demodulator and a radio paging system coding type decoder all of which are connected in sequence; and the reception device further comprises a microprocessor, a display and an incoming call prompter. By adopting a double-frequency working carrier mode to send the messages, the wireless communication system used for the mine, disclosed by the utility model, has the advantage of improving anti-interference capability of the system.
Description
Technical field
The utility model relates to wireless communication field, relates in particular to a kind of mine wireless communication system that is applicable to the industries such as colliery.
Background technology
In the industries such as colliery, the miner usually underground hundreds of rice in addition on carry out operation under the condition of km, therefore need between the miner of ground command center and down-hole, set up effective means of communication, make ground command center various information can be distributed to immediately the miner of down-hole, particularly gas explosion, drive are bright collapses etc. during major accident occuring, should issue rapidly corresponding emergence message to the down-hole, and organize, command the miner of down-hole safely, promptly to withdraw from danger position.
The Safety production questions of colliery industry is very important, and is subject to the extensive concern of national governments always.In January, 2002,1331 of fatal accidents occured in China's coal-mine enterprise altogether to May, and death toll reaches 2341 people.By setting up effective mine wireless communication system, one of important measures that reduce the causality losses such as accident rate, minimizing death toll, so the countries such as the U.S., Canada, Australia have all successively built up oneself mine wireless communication system and first-aid system.These high-tech means have greatly promoted the raising of downhole production efficient and lsafety level.For example, on July 24th, 2002, drive bright collapsing in Pennsylvania, United States colliery by means of the emergency information distribution function of mine with wireless communication system, just makes the miner be withdrawn rapidly just.
In the existing mine wireless communication equipment, the most advanced with the PED system of U.S. peace Fes company, for example in some mines of the Mining in Datong Mining Administration of China, Zhengzhou mineral bureau, the PED system has been installed all.Because there is following shortcoming in existing mine wireless communication equipment, so fail to apply in large quantities:
(1) existing mine adopts single carrier wave to transmit with wireless communication system usually, for example adopt the single carrier wave of 5 KHz (KHz) or 8KHz, antijamming capability is not strong, and the technical difficulty of enforcement is larger, required components and parts are many, cause its cost high.Traditional long wave equipment is comprised of auxiliary equipment such as sender, antenna, power supply, terminal equipment and cooling, control, protection and mirror surveys; and the auxiliary equipment such as sender, antenna, power supply, terminal equipment and cooling, control, protection and monitoring are to adopt traditional discrete component to make, and equipment is very huge and complicated.And existing 5 KHz (KHz) or 8KHz), adopting traditional modulating mode, antijamming capability is more weak.
(2) information editing of whole system, the independent operating between modulation and the high-power transmitter that transmits can not immediate feedback and processing to the fault of loop aerial.
(3) operation interface is single, to the processing of can only simply lining up of the message of needs emissions, can not make further Function Extension.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of high-performance, mine wireless communication system cheaply are provided, and to improve accident early warning and the accident rescue ability of bargh, reduces casualties and property loss.
For achieving the above object, described mine wireless communication system, comprise emitter and at least one receiving system that is complementary with this emitter, described emitter comprises be used to the modulator that transmits and high-power transmitter, the signal that described modulator sends needs is modulated to the signal of preset frequency, and output in the high-power transmitter and send, be characterized in, also comprise computer and radio paging system coding standard encoder in the described emitter, described computer is used for the information that editing and processing need to send and outputs to described encoder, and described encoder is binary digital signal with described information processing and outputs to described modulator; Described modulator is Continuous phase frequency shift keying formula modulator, and this modulator is modulated to the first frequency signal with ' 0 ' of binary number, and ' 1 ' is modulated to the second frequency signal, outputs to described high-power transmitter again and launches.
Preferably, described high-power transmitter comprises the casacade multi-amplifier that amplifies for the signal to described modulator output, and the loop aerial that is connected with described casacade multi-amplifier; Described high-power transmitter also comprises antenna protective circuit and power subsystem.
Preferably, described receiving system comprises receiving circuit, Continuous phase frequency shift keying formula demodulator and the radio paging system coding standard decoder that connects in turn, and described receiving system also comprises microprocessor, display and incoming call prompting device; Described microprocessor is controlled the work of described demodulator and decoder, and to the corresponding signal that drives of described prompting device output, exports corresponding display to described display simultaneously.
Preferably, also comprise the emergence message unit that is connected with described encoder communication in the described emitter, described emergence message stores at least one emergence message in the unit, and be furnished with the danger button corresponding with each bar emergence message, press a certain danger button, described emergence message unit transfers to corresponding emergence message in the described encoder.
Preferably, described antenna protective circuit comprise detecting unit for detection of described loop aerial failure condition, the power control unit of described power subsystem being controlled according to the output signal of described detecting unit and the fault logic analytic unit that carries out accident analysis according to the output signal of described detecting unit; The output signal of described fault logic analytic unit is sent to described computer and shows and record.
Preferably, casacade multi-amplifier in the described high-power transmitter comprises signal isolation circuit, driving amplifier and the insulated gate bipolar transistor that connects in turn, described signal isolation circuit is connected with the output communication of described modulator, and to receive the frequency signal of its output: the output of described insulated gate bipolar transistor is connected to described loop aerial.
Preferably, described display is liquid crystal display, and described prompting device is one or more in electroluminescent lamp, vibrator and the buzzer.
Preferably, described first frequency and second frequency are between 7～50 KHz.
Preferably, described first frequency is 10 KHz, and described second frequency is 13 KHz.
The beneficial effects of the utility model are that described mine adopts the two-frequency operation carrier mode to come emission information with wireless communication system, has improved the antijamming capability of system, the ability of radio wave transmission rock is strengthened, transmission range increases, and simultaneously required component number reduces, and cost reduces greatly; The information editing of whole system, transmit modulation and high-power transmitter mutual cooperation, but automatic feedback and the various fault messages of processing; Operation interface is more humane, can carry out complicated message queueing and other Function Extension; After this mine applied with wireless communication system, accident early warning and the accident rescue ability of bargh be can improve, casualties and property loss reduced.
Description of drawings
Fig. 1 shows the functional-block diagram that mine described in the utility model is used wireless communication system.
Fig. 2 shows the schematic diagram that the encoder shown in Fig. 1 and modulator integrate.
Fig. 3 shows the schematic diagram of the high-power transmitter shown in Fig. 1.
Fig. 4 shows the schematic diagram of the receiving system shown in Fig. 1.
Embodiment
The utility model is described in more detail below in conjunction with the drawings and specific embodiments:
Fig. 1 shows mine described in the utility model with the functional-block diagram of wireless communication system, as shown in Figure 1, is emitter 10 in the dotted line frame, and right lower quadrant is three portable receivers 20 that match with described emitter 10.Particularly, in described emitter 10, the information that need to be sent by computer 11 editing and processing first also outputs to radio paging system coding standard encoder 12, be to be scheduled to the binary coded signal of standard and to output to emission signal modulator 13 by encoder 12 with this information processing again, this modulator 13 is modulated to the first frequency signal with ' 0 ' of binary number, ' 1 ' is modulated to the second frequency signal, outputs to high-power transmitter 14 again, is launched by its loop aerial 16.
During implementation, described high-power transmitter 14 is installed in pithead, loop aerial 16 is installed in the mine, computer 11, encoder 12 and modulator 13 are then arranged according to the actual conditions in colliery, normally be installed in neighbouring or several kilometers outside command centre, so need between modulator 13 and the high-power transmitter 14 to be connected to transmit signal after the modulation with cable.
A principal character of the present utility model is to adopt two carrier waves to transmit, modulator 13 wherein is CPFSK (Continuous-Phase Frequency Shift Keying, Continuous phase frequency shift keying) modulator 13, its operating frequency for example can adopt following several groups of fixing frequencies 1 between 7～50KHz) 10.25KHz+11.346KHz; 2) 14.448KHz+16.91KHz; 3) 21.673KHz+23.865KHz; 4) 34.988KHz+38.732KHz; 5) 43.25KHz+47.346KHz; 6) 53.561KHz+58.236KHz; 7) 60.925KHz+67.134KHz; And can change arbitrarily above two carrier frequency groups by software.In the present embodiment, ' 0 ' of binary number is modulated to the 10KHz frequency signal, ' 1 ' is modulated to the 13KHz frequency signal.That is to say, namely use 10KHz signal indication ' 0 ', and with 13KHz signal indication ' 1 '.After adopting this two-frequency operation carrier mode, can greatly improve the antijamming capability of system, the ability of radio wave transmission rock is strengthened, transmission range increases, (its data rate is 512BPS in the utility model for example to send one 2 milliseconds, be about 0.5KHz) low level ' 0 ', or send out one 2 milliseconds (equally, its data rate is 512BPS, be about 0.5KHz) high level ' 1 ' time, carrier wave will be operated in 10KHz or 13KHz, since 13KHz/O.5KHz=26,10KHz/0.5KHz=20.Correspondingly, the square pulse of 20 100 microseconds or 26 76 microseconds will be sent.And after setting up synchronously between receiving and sending, receiving system 20 only need to monitor the pulse of 100 microseconds more than 3 or the pulse of 76 microseconds within the time of a certain segment sync, just can judge it is ' 0 ' or ' 1 ', so have extremely strong error correcting capability.On the other hand, adopt highly integrated high-speed dsp (digital signal processor) chipset in the present embodiment, can greatly reduce required component number, thereby cost is reduced greatly.
Fig. 2 shows the schematic diagram that the encoder 12 shown in Fig. 1 and modulator 13 integrate, and as shown in Figure 2, each functional module in the whole dotted line frame can adopt a High Performance DSP to realize.Whole DSP is connected with computer 11 by the RS232 interface.In DSP, adopt first POCSAG (radio paging system coding) encoder 12 to encode, the information processing that computer 11 is sent here is the binary code of predetermined format (POCSAG); Deliver to modulator 13 again and launch modulation, incite somebody to action ' 0 ' and be modulated to the 10KHz signal, ' 1 ' is modulated to the 13KHz signal; The signal that modulates is sent to high-power transmitter 14 by cable again and launches after the Hyblid Buffer Amplifier cell processing.The POCSAG coded system has than low transmission rate, and extremely strong signal error correction, repair function.Because wireless signal in transmission course, can be subject to unavoidably all interference and stop, cause signal incompleteness, error code, therefore error correction, the repair function of coding have conclusive effect for the reliability of remote controller.The automatic error correction function that pocsag code has been arranged, even under the environment of the abominable signal of wireless signal, also can receive reliably message, reliability is high, its technology realizes also ripe simultaneously.
As can be seen from Figure 2, also be provided with an emergence message unit in the described emitter 10, can store three (or more) emergence messages in this emergence message unit, article three, emergence message is furnished with one to one three danger buttons, press a certain danger button then directly to the corresponding emergence message of encoder 12 outputs, then encoded, modulation is rear is launched by high-power transmitter 14.When there being emergency to occur, or computer 11 presses danger button when breaking down, and can not rely on computer 11 and directly sends emergency instruction.
By adopting highly integrated DSP embedded, can independently, automatically carry out the transmission of signal, can take into account the control signal that the treatment system leading portion feeds back again, and be reflected on the operation interface comprehensively.This DSP also can be used for finishing the message queueing function, in addition, by adopting suitable air interface protocols, need not any additional equipment, just can be by the Hyblid Buffer Amplifier unit among Fig. 2 to receiving system 20 direct transmission information, to revise the various parameters of receiving system 20.
Fig. 3 shows the schematic diagram of the emitter 10 shown in Fig. 1, and as shown in Figure 3, described high-power transmitter 14 comprises casacade multi-amplifier, power subsystem, loop aerial 16 and antenna protective circuit etc.Wherein, described casacade multi-amplifier comprises signal isolation circuit, driving amplifier and the 1GBT (insulated gate bipolar transistor) that connects in turn.Wherein signal isolation circuit can be connected with the Hyblid Buffer Amplifier unit among Fig. 2, and to receive the frequency signal of modulator 13 outputs, the output of 1GBT then is connected to loop aerial 16.
As can be seen from Figure 3, comprise a plurality of detecting units 15 that the failure conditions such as overcurrent to loop aerial 16, open circuit, electric leakage detect, the power control unit of power subsystem being controlled according to the output signal of each detecting unit 15 and the fault logic analytic unit (not drawing in the drawings) that carries out accident analysis according to the output signal of each detecting unit 15 in wherein the antenna protective circuit; The output signal of fault logic analytic unit can be sent to computer 11 through the integrated modem module shown in Fig. 2 and show and record.
It can also be seen that from Fig. 3 whole high-power transmitter 14 is by the civil power Alternating Current Power Supply, be provided with in the power supply anti-interference, full-bridge rectification, power frequency filtering, etc. circuit.
Fig. 4 shows the schematic diagram of the receiving system 20 shown in Fig. 1, as shown in Figure 4, described receiving system 20 comprises in turn receiving circuit, Continuous phase frequency shift keying formula demodulator and the radio paging system coding standard decoder that connects, and wherein receiving circuit is comprised of preamplifier, band pass filter and limiting amplifier: also comprise microprocessor (AR5020OTP), liquid crystal display (LCD) in the receiving system 20 and be contained in warning light (being cap lamp) on the miner's safety helmet.The wherein work of microprocessor control demodulator and decoder, and to the corresponding signal that drives of the relay output of warning light, make it glimmer to produce the incoming call prompting effect, export corresponding display to liquid crystal display simultaneously.Except above-mentioned warning light, also available vibrator or buzzer increase the incoming call prompting effect.As can be seen from the figure, the power supply of whole receiving system 20 is taken from the warning light battery on the miner's safety helmet.
Utilize mine wireless communication system described in the utility model, when edit at computer 11 need emission information after, by the RS232 serial cable these information are transferred on the integration module shown in Figure 2 from computer 11; By this module first to these information carry out POCSAG (the radio paging system coding〉coding, to ' 0 ' by 2CPFSK modulator 13 again, ' 1 ' is modulated to respectively two myriametric waves, after the Hyblid Buffer Amplifier unit amplifies, delivers on the myriametric wave high-power transmitter 14 by twisted-pair feeder more again; Described high-power transmitter 14 is amplified to signal about 1 kilowatt and delivers to ring Shape antenna, electromagnetic radiation by loop aerial 16 is sent to each radio receiver 20, when described receiving system 20 is received information, miner's warning light can glimmer, buzzer sends and pipes, and the display of receiving system 20 will demonstrate the command information that command centre sends simultaneously.
When System Operation, be connected across the operating state of the antenna protective circuit Real Time Monitoring loop aerial 16 on the loop aerial 16: when the situations such as short circuit, electric leakage, fracture occurring when loop aerial 16, these information can be caught by antenna failure detecting unit 15, after the fault logic analytic unit was analyzed, corresponding indicator light can send prompting; Cut off simultaneously rapidly the power supply of loop aerial 16 and these information are delivered to computer 11 through modulator 13 modules record and show.
Being the utility model preferred embodiment only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should belong to technology category of the present utility model.
Claims (9)
1. mine wireless communication system, comprise emitter and at least one receiving system that is complementary with this emitter, described emitter comprises be used to the modulator that transmits and high-power transmitter, the signal that described modulator sends needs is modulated to the signal of preset frequency, and output in the high-power transmitter and send, it is characterized in that: also comprise computer and radio paging system coding standard encoder in the described emitter, described computer is used for the information that editing and processing need to send and outputs to described encoder, and described encoder is binary digital signal with described information processing and outputs to described modulator; Described modulator is Continuous phase frequency shift keying formula modulator, and this modulator is modulated to the first frequency signal with ' 0 ' of binary number, and ' 1 ' is modulated to the second frequency signal, outputs to described high-power transmitter again and launches.
2. mine wireless communication system according to claim 1 is characterized in that: described high-power transmitter comprises the casacade multi-amplifier that amplifies for the signal to described modulator output, and the loop aerial that is connected with described casacade multi-amplifier; Described high-power transmitter also comprises antenna protective circuit and power subsystem.
3. mine wireless communication system according to claim 1, it is characterized in that: described receiving system comprises receiving circuit, Continuous phase frequency shift keying formula demodulator and the radio paging system coding standard decoder that connects in turn, and described receiving system also comprises microprocessor, display and incoming call prompting device; Described microprocessor is controlled the work of described demodulator and decoder, and to the corresponding signal that drives of described prompting device output, exports corresponding display to described display simultaneously.
4. mine wireless communication system according to claim 1, it is characterized in that: also comprise the emergence message unit that is connected with described encoder communication in the described emitter, described emergence message stores at least one emergence message in the unit, and be furnished with the danger button corresponding with each bar emergence message, press a certain danger button, described emergence message unit transfers to corresponding emergence message in the described encoder.
5. mine wireless communication system according to claim 2 is characterized in that: described antenna protective circuit comprises the power control unit of described power subsystem being controlled for detection of the detecting unit of described loop aerial failure condition, according to the output signal of described detecting unit and the fault logic analytic unit that carries out accident analysis according to the output signal of described detecting unit; The output signal of described fault logic analytic unit is sent to described computer and shows and record.
6. mine wireless communication system according to claim 2, it is characterized in that: the casacade multi-amplifier in the described high-power transmitter comprises signal isolation circuit, driving amplifier and the insulated gate bipolar transistor that connects in turn, described signal isolation circuit is connected with the output communication of described modulator, and to receive the frequency signal of its output: the output of described insulated gate bipolar transistor is connected to described loop aerial.
7. mine wireless communication system according to claim 3, it is characterized in that: described display is liquid crystal display, described prompting device is one or more in electroluminescent lamp, vibrator and the buzzer.
8. the described mine wireless communication system of any one in 7 according to claim 1, it is characterized in that: described first frequency and second frequency are between 7～50 KHz.
9. mine wireless communication system according to claim 8, it is characterized in that: described first frequency is 10 KHz, described second frequency is 13 KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370515 CN202696584U (en) | 2012-07-30 | 2012-07-30 | Wireless communication system used for mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370515 CN202696584U (en) | 2012-07-30 | 2012-07-30 | Wireless communication system used for mine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202696584U true CN202696584U (en) | 2013-01-23 |
Family
ID=47552134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220370515 Expired - Fee Related CN202696584U (en) | 2012-07-30 | 2012-07-30 | Wireless communication system used for mine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202696584U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052505A (en) * | 2013-11-07 | 2014-09-17 | 无锡泽太微电子有限公司 | Single-chip wireless transmitter, transmitting chip and signal transmitting method |
| CN105840241A (en) * | 2016-06-08 | 2016-08-10 | 陈魏魏 | Wireless transmission station for long-distance tunnel |
-
2012
- 2012-07-30 CN CN 201220370515 patent/CN202696584U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104052505A (en) * | 2013-11-07 | 2014-09-17 | 无锡泽太微电子有限公司 | Single-chip wireless transmitter, transmitting chip and signal transmitting method |
| CN105840241A (en) * | 2016-06-08 | 2016-08-10 | 陈魏魏 | Wireless transmission station for long-distance tunnel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100538017C (en) | Mine safety early warning and rescue information systems | |
| CN104851266A (en) | Water level monitoring system based on wireless transmission | |
| CN201437473U (en) | Failure monitoring system for belt conveyor | |
| CN105240685A (en) | Gas remote monitoring system based on GPRS communication | |
| CN202696584U (en) | Wireless communication system used for mine | |
| CN201732476U (en) | Traffic signal monitoring system for slope ramp of mine based on radio frequency identification technology | |
| CN202707136U (en) | Safety pre-warning and rescuing system for mine | |
| CN202949429U (en) | Detecting device of transponder transmission module | |
| CN1251423C (en) | Underground wireless communication system | |
| CN202261270U (en) | Mine through-the-earth communication rescue information system | |
| CN110920679A (en) | Railway protection construction equipment early warning alarm and recording method based on LTE-R | |
| CN203012900U (en) | Smoke alarm with remote control detection function | |
| CN205247590U (en) | Colliery relay protection definite value wireless transmission system based on WLAN | |
| CN204433995U (en) | Be applied to the tele-control system of building hoist | |
| CN201774524U (en) | D-wave communication rescue system for mine disasters | |
| CN205578034U (en) | Mine personnel location system | |
| CN205644663U (en) | Long statistical system when regional resident | |
| CN217926253U (en) | High-temperature protection system | |
| CN216269284U (en) | Intelligent early warning system for safety protection of railway on-track operators | |
| CN203504295U (en) | Remote visual monitoring system for transformer stations | |
| CN204198321U (en) | A kind of mine endless rope electric controll winch device | |
| CN203596076U (en) | Household multichannel infrared smoke-sensing fire alarm based on GSM network | |
| CN204489906U (en) | A kind of belt of adhesive tape machine width monitoring device | |
| CN203012932U (en) | A wireless voice alarm signal long-distance transmitter | |
| CN218103218U (en) | Twisted-pair ultra-long distance DSL module for coal mine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20150730 |
|
| EXPY | Termination of patent right or utility model |