CN1571313A - Shortwave meteorological data transmission method and transmission system - Google Patents
Shortwave meteorological data transmission method and transmission system Download PDFInfo
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- CN1571313A CN1571313A CNA2004100261099A CN200410026109A CN1571313A CN 1571313 A CN1571313 A CN 1571313A CN A2004100261099 A CNA2004100261099 A CN A2004100261099A CN 200410026109 A CN200410026109 A CN 200410026109A CN 1571313 A CN1571313 A CN 1571313A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention is a shortwave-based weather data transmitting method and system, composed of master control computer, network controller, shortwave station, transmitting aerial, receiving antenna and shortwave receiver, where RS-232 terminal of the network controller is connected with COM1 or COM2 port of the master control computer, ACC1 terminal of the network controller is connected with REM1 terminal of the shortwave station and the shortwave receiver is a shortwave single-sideband receiver. Classify the real-time collected weather information by the master control computer to generate weather forecast information data of each sea region, primarily input the information data to the network controller for grouping, convert the grouped information data to audio frequency information to send to the shortwave station, adopt shortwave single-sideband channel to transmit multiple packets in multicahnnel packet auto-transmitting mode, adopt a multichannel auto-scanning receiving mode to receive them many times, join and integrate the exact data according to packet number into a piece of complete information. It can provide accurate, in-time, reliable weather forecast information service and other business service for moving ships.
Description
Technical field
The present invention relates to a kind of shortwave meteorological data transmission method and transmission system.Can be that the mobile ship that is in different waters in 0～1000 kilometer range, different time sections and different weather provides accurately, timely, reliable weather forecast information service and other commerce services.
Background technology
Radio paging system of the prior art adopts VHF or uhf band, often needs the high antenna of frame or set up a plurality of base stations to cover the coverage to satisfy.Marine paging target is disperseed, the coverage is big, and be difficult to set up a plurality of base stations, therefore, general land paging system be difficult to that the mobile ship of different waters, different time sections and different weather provides accurately in 0～1000 kilometer range in order to be in, in time, reliable weather forecast information service and other commerce services.
Summary of the invention
The technical problem that the present invention solves: a kind of shortwave meteorological data transmission method and transmission system are provided, adopt the monolateral band of shortwave (SSB) channel, the broadcast communication mode that the multichannel grouping sends, the mode of operation that the multichannel automatic scan receives is carried out data information transmission.Can be that the mobile ship that is in different waters in 0～1000 kilometer range, different time sections and different weather provides accurately, timely, reliable weather forecast information service and other commerce services.
Technical solution of the present invention:
Shortwave meteorological data transmission method:
1. generate each sea area weather forecast information data behind the weather information collating sort that real-time collecting is arrived by main control computer, then with the disposable injection network controller of these data, with this packet, and the data message after will dividing into groups is sent into short-wave radio set after converting audio-frequency information to by network controller.
2. adopt by short-wave radio set that shortwave is monolateral takes a message, the multichannel automatic send mode that divides into groups makes every group of information carry out many bag distributions.
3. adopt multichannel automatic scan receive mode by the shortwave single side-band receiver, every group of information is repeatedly received, utilize the majority decision method then, reject the data of wrong Bale No., correct data are integrated into a complete information by the Bale No. splicing.
Shortwave meteorological data transmission system, form by main control computer, network controller, short-wave radio set, transmitting antenna, reception antenna and short-wave receiver, be connected with transmitting antenna on the short-wave radio set, be connected with reception antenna on the short-wave receiver, the RS-232 terminal of network controller is connected with the COM1 of main control computer or COM2 port, the ACC1 terminal of network controller is connected with the REM1 terminal of short-wave radio set, and short-wave receiver is the shortwave single side-band receiver.
Short-wave radio set is made up of radio station, power amplifier and antenna tuner, the input of the output termination power amplifier in radio station, the radio frequency interface of power amplifier connects the radio frequency interface input of antenna tuner, the control interface of power amplifier connects the control interface of antenna tuner, and the output of antenna tuner connects transmitting antenna.
Network controller is made up of interface circuit, microprocessing unit and modem module, interface circuit is connected with the input of microprocessing unit, the output of microprocessing unit is connected with the input of modem module, and the audio interface of modem module is connected with the REM1 terminal of short-wave radio set.
Short-wave receiver is by housing (1), display (2), control button (3) and control circuit are formed, display (2) and control button (3) are arranged on the front of housing (1), control circuit is arranged in the housing (1), control circuit is by filter, the large-signal amplitude limiter, first mixting circuit, frequency selection circuit, second mixting circuit, the audio compression circuit, modulator-demodulator, microprocessor, the temperature compensation circuit, frequency selection circuit and phase-locked loop circuit are formed, the input of reception antenna and filter joins, the input of the output of filter and first mixting circuit joins, the output of first mixting circuit and the input of frequency selection circuit join, the input of the output of frequency selection circuit and second mixting circuit joins, the input of the output of second mixting circuit and audio compression circuit joins, the input of the input modulator-demodulator of the output of audio compression circuit joins, the output of modulator-demodulator and the input of microprocessor join, the output of temperature compensation circuit joins with the input of frequency selection circuit and phase-locked loop circuit respectively, the input of the output of phase-locked loop circuit and first mixting circuit joins, the input of the output of frequency selection circuit and second mixting circuit joins, the output of microprocessor is connected with the input of phase-locked loop circuit, and display (2) all is connected with the corresponding port of microprocessor with control button (3).
Advantage that the present invention compared with prior art has and effect:
1, the present invention is in order to adapt to the characteristics of short wave communication equipment, the disposable injection network controller of data that main control computer is sent, network controller adopts the cutting techniques that breaks the whole up into parts after receiving data, make every group of information carry out many bag distributions, guaranteed the reliability service of equipment, prevented of the interference of short wave communication equipment, also laid a good foundation simultaneously for the receiver reliable reception to computer.
2, receiver adopts the redundant mode that receives, and every group of information repeatedly receives, and utilizes the majority decision method, rejects the data of wrong Bale No., and correct data are integrated into a complete information by the Bale No. splicing.The employing of this method has reduced the influence of short wave channel variation to transfer of data, has guaranteed the integrality and the reliability of receiving data information.
3, the system centre platform adopts the higher high-power transmitter of frequency stability, makes the information wide coverage of transmission, and signal stabilization is easy to receive.The pattern that adopts many class frequencys repeatedly to send simultaneously, the ship that guarantees to be in different waters in time reliable reception arrives weather forecast information.According to the variation of weather and the different frequency channels combinations that also can select the best arbitrarily of time, the assurance whole system is carried out reliable weather information transmission at the channel condition of the best.
4, in order to guarantee that the receiver that is in different waters can both in time receive accurately, reliable weather forecast information, receiver has adopted the class adaptive technique, in case the selected channel frequency group of real time scan is capturing information then automatic reception, processing, storage and demonstration.
5, in order to reduce the cost of receiver, receiver has adopted two local oscillator technology of single-conversion, makes receiver not only guarantee receptivity but also reduced cost.
6, behind this system implementation, make the fishery ship of China's open sea regions can grasp the weather information in each marine site, ship place timely and accurately, ensured the safe fishing operation of each fishery ship, and opened up new space for the development of meteorological department.
Description of drawings
Fig. 1 is a block diagram of the present invention,
Fig. 2 is the block diagram of an embodiment of the present invention,
Fig. 3 is the structural representation of short-wave receiver of the present invention,
Fig. 4 is the structural representation of network controller of the present invention,
Fig. 5 is the circuit block diagram of short-wave receiver of the present invention,
Fig. 6 is the circuit block diagram of network controller of the present invention.
Embodiment
2,3,4,5,6 a kind of embodiment of the present invention is described in conjunction with the accompanying drawings.
Transmission method:
1. generate each sea area weather forecast information data behind the weather information collating sort that real-time collecting is arrived by main control computer, then with the disposable injection network controller of these data, with this packet, and the data message after will dividing into groups is sent into short-wave radio set after converting audio-frequency information to by network controller.
2. adopt by short-wave radio set that shortwave is monolateral takes a message, the multichannel automatic send mode that divides into groups makes every group of information carry out many bag distributions.
3. adopt multichannel automatic scan receive mode by the shortwave single side-band receiver, every group of information is repeatedly received, utilize the majority decision method then, reject the data of wrong Bale No., correct data are integrated into a complete information by the Bale No. splicing.
Transmission system: form by main control computer, network controller, short-wave radio set, transmitting antenna, reception antenna and short-wave receiver, be connected with transmitting antenna on the short-wave radio set, be connected with reception antenna on the short-wave receiver, the RS-232 terminal of network controller is connected with the COM1 of main control computer or COM2 port, ACC 1 terminal of network controller is connected with the REM1 terminal of short-wave radio set, and short-wave receiver is the shortwave single side-band receiver.
Short-wave radio set is made up of radio station, power amplifier and antenna tuner, the input of the output termination power amplifier in radio station, the radio frequency interface of power amplifier connects the radio frequency interface input of antenna tuner, the control interface of power amplifier connects the control interface of antenna tuner, and the output of antenna tuner connects transmitting antenna.
Network controller is made up of interface circuit, microprocessing unit and modem module, interface circuit is connected with the input of microprocessing unit, the output of microprocessing unit is connected with the input of modem module, and the audio interface terminal of modem module is connected with the REM1 terminal of short-wave radio set.
Short-wave receiver is by housing (1), display (2), control button (3) and control circuit are formed, display (2) and control button (3) are arranged on the front of housing (1), control circuit is arranged in the housing (1), control circuit is by filter, the large-signal amplitude limiter, first mixting circuit, frequency selection circuit, second mixting circuit, the audio compression circuit, modulator-demodulator, microprocessor, the temperature compensation circuit, frequency selection circuit and phase-locked loop circuit are formed, the input of reception antenna and filter joins, the input of the output of filter and first mixting circuit joins, the output of first mixting circuit and the input of frequency selection circuit join, the input of the output of frequency selection circuit and second mixting circuit joins, the input of the output of second mixting circuit and audio compression circuit joins, the output of audio compression circuit and the input of modulator-demodulator join, the output of modulator-demodulator and the input of microprocessor join, the output of temperature compensation circuit joins with the input of frequency selection circuit and phase-locked loop circuit respectively, the input of the output of phase-locked loop circuit and first mixting circuit joins, the input of the output of frequency selection circuit and second mixting circuit joins, the output of microprocessor is connected with the input of phase-locked loop circuit, and display (2) all is connected with the corresponding port of microprocessor with control button (3).
The system centre operation principle:
System centre receives the meteorological data of China Meteorological Administration and each side in real time, these meteorological datas are carried out generate real-time weather forecast information after the processing of science, after collating sort generates each sea area weather forecast information, by meteorological receiver issue weather forecast information of the central control board boat-carrying shortwave that (0～1000 kilometer) has networked or has been incorporated into the power networks in being in the area under one's jurisdiction scope and various information on services.
The short-wave receiver operation principle:
Short-wave receiver is portable single side-band receiver, can in 4.00MHz to 7.99MHz frequency range, carry out multifrequency point, automatic scan communication (3 frequencies of tentative use, can suitably increase and decrease by actual operating position), communication distance is that 0～1000Km is (relevant with the transmitting power size in system centre radio station, the 500W radio station is used in the system centre suggestion), in this communication range, can finish the reliable reception and the demonstration of data message.This operation of receiver kind is USB, mainly passes receiving terminal as the shortwave number and uses, and also can change a little, is used as monolateral band voice receiver and uses.
The various information (comprising weather information and information on services) of short-wave receiver receiving center platform issue at any time, and the various information of receiving are handled, storage and showing.Remain the up-to-date weather information of receiving real-time roll display on LCD screen; Whenever receiving that up-to-date weather forecast information all provides sound and light alarm prompting immediately, make the user can in time grasp up-to-date weather information and make correct decision-making.
Short-wave receiver adopts the double conversion technology, therefore needs two local oscillators.Under the prerequisite that reduces cost, use the temperature compensation oscillator of a high frequency stability, the frequency that this temperature compensation oscillator produces makes it as the reference frequency that produces another local oscillator again both as a local oscillator.Utilize PHASE-LOCKED LOOP PLL TECHNIQUE to compare with reference frequency, thereby obtain another local oscillator with the same stability of temperature compensation oscillator by the frequency that VCO produces.
The operation principle of short wave channel receiving element is, at first the radiofrequency signal that receives is mixed with a local oscillator, then through amplification, filtering, obtain intermediate frequency 10.24MHz, again the amplification of 10.24MHz intermediate-freuqncy signal, filtering and two local oscillator mixing are obtained audio signal, will send into modem module after the compressed processing of the audio signal that obtain.
During short-wave receiver work, at first send the pre-selected frequency data to frequency synthesizer and subrane filter at interval with predetermined timing, make of the three class frequency cocycles scanning of short wave channel receiving element in preliminary election by microprocessor unit.Any one frequency acquisition is to synchronizing signal and synchronously in three frequencies of institute's preliminary election, modem module is sent into synchronizing signal to microprocessor unit immediately, microprocessor unit receives that synchronizing signal then no longer send data to frequency synthesizer and subrane filter, and stops scan channel and rest on the radio frequency channel of having selected.At this moment, modem module is opened and inserted to the voice-grade channel path, audio signal is converted to data-signal and sends into microprocessor unit after demodulation, whether microprocessor unit is all foundation mutually according to the correctness or the reception information of Data Receiving, selects to preserve still to abandon.Since data that zone center sent with many bags distribute, when repeatedly synchronous mode transfer, so the meteorological receiver of shortwave receives data, also with repeatedly synchronous, the modes of many bag receptions receive.Whenever capture synchronizing signal and synchronously after, stop scan channel; After a bag Data Receiving is finished, enter scanning mode automatically, receive next bag data at any time.In case when the digital information of receiving can be integrated into a complete file, microprocessor unit was finished the preservation and the demonstration (on liquid crystal display screen) of data, and provides acousto-optic hint.
The strong error-correcting performance of modem module makes short-wave signal still can demodulate correct data message under very poor situation, has guaranteed that the meteorological receiver of shortwave receives the superior function of data.
The pattern that the short-wave receiver multichannel scanning receives makes every part of information of reception that the repeatedly characteristics of reception, random integration all be arranged, and has guaranteed every part of information integrity, reliability and redundancy.Realized short-wave receiver simultaneously in the zone that zone center can cover (in zone center 1000 kilometer range), any time, anywhere can both be in real time all information of receiving center platform transmission reliably.
Equipment is installed
1, short-wave receiver is installed
Short-wave receiver is installed belowdecks according to customer requirements, and antenna installation sets up according to the ship size reasonable.
2, system centre is installed
System centre is removed antenna and automatic antenna tuner and is installed in outdoorly, and all the other equipment are installed in indoor, and wherein the distance of the placement between computer and short-wave transmitter is at least 3 meters, and system's ground wire rationally connects and reliable ground.
This system also can provide information services such as fishing feelings, fishing season, fishery materials, fishing goods market except that being used for marine forecast service and SMS (Short Message Service).
Claims (5)
1, a kind of shortwave meteorological data transmission method is characterized in that:
1. generate each sea area weather forecast information data behind the weather information collating sort that real-time collecting is arrived by main control computer, then with the disposable injection network controller of these data, with this packet, and the data message after will dividing into groups is sent into short-wave radio set after converting audio-frequency information to by network controller.
2. adopt by short-wave radio set that shortwave is monolateral takes a message, the multichannel automatic send mode that divides into groups makes every group of information carry out many bag distributions.
3. adopt multichannel automatic scan receive mode by the shortwave single side-band receiver, every group of information is repeatedly received, utilize the majority decision method then, reject the data of wrong Bale No., correct data are integrated into a complete information by the Bale No. splicing.
2, a kind of shortwave meteorological data transmission system, form by main control computer, network controller, short-wave radio set, transmitting antenna, reception antenna and short-wave receiver, be connected with transmitting antenna on the short-wave radio set, be connected with reception antenna on the short-wave receiver, it is characterized in that: the RS-232 terminal of network controller is connected with the COM1 of main control computer or COM2 port, the ACC1 terminal of network controller is connected with the REM1 terminal of short-wave radio set, and short-wave receiver is the shortwave single side-band receiver.
3, shortwave meteorological data transmission system according to claim 2, it is characterized in that: short-wave radio set is made up of radio station, power amplifier and antenna tuner, the input of the output termination power amplifier in radio station, the radio frequency interface of power amplifier connects the radio frequency interface input of antenna tuner, the control interface of power amplifier connects the control interface of antenna tuner, and the output of antenna tuner connects transmitting antenna.
4, shortwave meteorological data transmission system according to claim 2, it is characterized in that: network controller is made up of interface circuit, microprocessing unit and modem module, interface circuit is connected with the input of microprocessing unit, the output of microprocessing unit is connected with the input of modem module, and the audio interface of modem module is connected with the REM1 terminal of short-wave radio set.
5, shortwave meteorological data transmission system according to claim 2, it is characterized in that: short-wave receiver is by housing (1), display (2), control button (3) and control circuit are formed, display (2) and control button (3) are arranged on the front of housing (1), control circuit is arranged in the housing (1), control circuit is by filter, the large-signal amplitude limiter, first mixting circuit, frequency selection circuit, the second mixting circuit audio compression circuit, modulator-demodulator, microprocessor, the temperature compensation circuit, frequency selection circuit and phase-locked loop circuit are formed, the input of reception antenna and filter joins, the input of the output of filter and first mixting circuit joins, the output of first mixting circuit and the input of frequency selection circuit join, the input of the output of frequency selection circuit and second mixting circuit joins, the input of the output of second mixting circuit and audio compression circuit joins, the input of the input modulator-demodulator of the output of audio compression circuit joins, the output of modulator-demodulator and the input of microprocessor join, the output of temperature compensation circuit joins with the input of frequency selection circuit and phase-locked loop circuit respectively, the input of the output of phase-locked loop circuit and first mixting circuit joins, the input of the output of frequency selection circuit and second mixting circuit joins, the output of microprocessor is connected with the input of phase-locked loop circuit, and display (2) all is connected with the corresponding port of microprocessor with control button (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100261099A CN1571313A (en) | 2004-04-22 | 2004-04-22 | Shortwave meteorological data transmission method and transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100261099A CN1571313A (en) | 2004-04-22 | 2004-04-22 | Shortwave meteorological data transmission method and transmission system |
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| CN1571313A true CN1571313A (en) | 2005-01-26 |
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| CNA2004100261099A Pending CN1571313A (en) | 2004-04-22 | 2004-04-22 | Shortwave meteorological data transmission method and transmission system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306018A (en) * | 2011-06-09 | 2012-01-04 | 民航数据通信有限责任公司 | System and method for digitally controlling radio transmitter in real time |
| CN107135433A (en) * | 2017-05-19 | 2017-09-05 | 交通运输部南海航海保障中心 | Multifunctional groups protect equipment in the boat of high frequency data transfer |
| CN108784685A (en) * | 2018-05-24 | 2018-11-13 | 北京维康恒科技有限公司 | EGC waveform data processing method and processing device |
| CN114615120A (en) * | 2022-02-08 | 2022-06-10 | 陕西烽火实业有限公司 | Communication system and communication method for short-wave frequency band oceanographic meteorological information data |
-
2004
- 2004-04-22 CN CNA2004100261099A patent/CN1571313A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306018A (en) * | 2011-06-09 | 2012-01-04 | 民航数据通信有限责任公司 | System and method for digitally controlling radio transmitter in real time |
| CN102306018B (en) * | 2011-06-09 | 2013-03-20 | 民航数据通信有限责任公司 | System and method for digitally controlling radio transmitter in real time |
| CN107135433A (en) * | 2017-05-19 | 2017-09-05 | 交通运输部南海航海保障中心 | Multifunctional groups protect equipment in the boat of high frequency data transfer |
| CN107135433B (en) * | 2017-05-19 | 2023-11-07 | 交通运输部南海航海保障中心 | Multifunctional aviation protection equipment based on high-frequency data transmission |
| CN108784685A (en) * | 2018-05-24 | 2018-11-13 | 北京维康恒科技有限公司 | EGC waveform data processing method and processing device |
| CN114615120A (en) * | 2022-02-08 | 2022-06-10 | 陕西烽火实业有限公司 | Communication system and communication method for short-wave frequency band oceanographic meteorological information data |
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