CN105357654A - Beidou-based emergency communication service system and working method thereof - Google Patents
Beidou-based emergency communication service system and working method thereof Download PDFInfo
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- CN105357654A CN105357654A CN201510743280.XA CN201510743280A CN105357654A CN 105357654 A CN105357654 A CN 105357654A CN 201510743280 A CN201510743280 A CN 201510743280A CN 105357654 A CN105357654 A CN 105357654A
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- 238000000034 method Methods 0.000 title claims abstract description 10
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- 238000007405 data analysis Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000004927 fusion Effects 0.000 claims description 15
- 230000002123 temporal effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 230000011218 segmentation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
Abstract
The invention relates to a Beidou-based emergency communication service system and a working method thereof. The emergency communication service system comprises a Beidou emergency communication client system, and a Beidou emergency communication server side system which is connected with the Beidou emergency communication client system. The Beidou-based emergency communication service system is easy to implement, can be independent of an original communication network, and has the advantages of large coverage, wide application field and high actual application value.
Description
Technical field
The present invention relates to big-dipper satellite short message communication technical field, particularly a kind of emergency communication service system based on the communication of big-dipper satellite short message and method of work thereof.
Background technology
The situations such as mobile communication interruption, power breakdown or mobile communication can not cover may be there is for natural calamity areas such as earthquakes, the condition of a disaster and disaster relief information can not obtain in time, the best disaster relief and rescue time is affected adversely, may cause more life and property loss therefrom.On the other hand, China mountain area and backwoodsman communications infrastructure construction perfect still not, meagrely-populated, there is more communication blind zone problem.Such as wind power plant enforcement is generally all placed on more from far-off regions, usually needing special messenger to patrol and examine, equipment repair and maintenance time and effort consuming, once device damage is difficult to be found in time, and likely resulting in greater loss because delaying the repair time.
Gps system only provides navigator fix, time service service, does not provide data message interactive service.The Beidou satellite system with independent intellectual property right, while China and surrounding area provide above-mentioned service, also provides unique short message service function, has application widely.
Summary of the invention
The object of the invention is to for above-mentioned about communication islanding problem such as the natural calamities such as earthquake, field scientific investigation, mobile base station from far-off regions signal cannot cover, utilize big-dipper satellite short message communication function, a kind of timely, effective, reliable emergency communication service system based on the Big Dipper and method of work thereof are provided.
In order to solve the problems of the technologies described above, the invention provides a kind of emergency communication service system based on the Big Dipper, comprising: Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
Further, described Big Dipper emergency communication FTP client FTP comprises: Big Dipper emergency communication base station, short-distance wireless communication node; Described Big Dipper emergency communication FTP client FTP is suitable for the data fusion of the information of short-distance wireless communication node, geographical location information, parsing, to provide GSM/GPRS communication service and/or the communication service of Big Dipper short message; Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server, mobile terminal and subscriber computer; Described host computer server is suitable for being communicated with long-range Big Dipper emergency communication FTP client FTP by Big Dipper emergency communication gateway.
Further, described Big Dipper emergency communication base station comprises: Big Dipper short message module, GSM/GPRS module, Beidou navigation locating module, radio communication unit, and wherein said Big Dipper short message module, GSM/GPRS module select module to be connected with a processor module respectively by first passage; And described processor module is also connected with the radio communication unit for being connected short-distance wireless communication node with Beidou navigation locating module.
Further, the information that described processor module is suitable for the positioning time obtained by Beidou navigation locating module, longitude and latitude are received with radio communication unit merges mutually; And the packet of fusion is carried out the transmission of Big Dipper short message by Big Dipper short message module, or carry out short message sending by GSM/GPRS module.
Further, described radio communication unit comprises: be suitable for the WiFi module as Wi-Fi hotspot, for the bluetooth module providing bluetooth equipment wireless access to serve; Described WiFi module, bluetooth module select module to be connected with processor module respectively by second channel; And described radio communication unit also comprises: the ZigBee module be connected with processor module; Described processor module is also connected with touch display module, and inputs corresponding control command, data message by touch display module.
Further, described processor module is suitable for that the data message inputted by touch display module and positioning time, longitude and latitude and ZigBee module are obtained data message and merges mutually, and the packet of fusion is sent by control command selection Big Dipper short message module, received Big Dipper short message, or by the transmission of GSM/GPRS module, reception note.
Further, described Big Dipper short message emergency communication base station also comprises: power module, described power module comprises: photovoltaic panel, the charging control unit be connected with this photovoltaic panel, described charging control unit charge-discharge end is connected with storage battery, and the output of described charging control unit is as the feeder ear of Big Dipper short message emergency communication base station.
Further, described Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server and/or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP;
Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
Another aspect, in order to solve same technical problem, present invention also offers a kind of method of work of the emergency communication service system based on the Big Dipper.
Described emergency communication service system comprises: Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
Further, described Big Dipper emergency communication FTP client FTP is suitable for receiving Beidou II navigation satellite signal, calculating location and temporal information, and receive Big Dipper generation satellite short message information, carry out Data Analysis and be transmitted to short-distance wireless communication node, also be suitable for receiving short-distance wireless communication nodal information, merge user profile, location and time information data, carry out short message transmission; And adopt GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication gateway of Big Dipper emergency communication service end system; Described Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server; Wherein said Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP; Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
Beneficial effect of the present invention is:
(1) provide GSM/GPRS communication service and Big Dipper short message communication service two kinds of service modes optional.
(2) Big Dipper emergency communication base station can use as terminal, both as emergency communication base station, can provide the access service of short-distance wireless communication node, also as independently emergency communication terminal, can extend equipment range of application.
(3) emergency power supply power supply in support, can be photovoltaic charged, under electric power thus supplied, cannot can pass through solar recharging, for Big Dipper emergency communication base station/terminal provides electric energy in electric power system.
(4) system can use as emergency communication function, also can as of a remote device monitoring system important composition part.
(5) the short message two-way communications capabilities utilizing Beidou satellite system to provide, original communication network can not relied on, all can use in China and surrounding area, wide coverage, do not limit by geographic distance, effectively solve China in the natural calamity situation taken place frequently, implement emergency disaster relief and the unimpeded problem of guarantee information, the emergency communication systems such as earthquake relief work, field work, forest fire protection, traffic, water conservancy, ocean operation can be widely used in, economic results in society are obvious, have stronger application value realistic.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the theory diagram of the emergency communication service system based on the Big Dipper of the present invention;
Fig. 2 is the theory diagram of Big Dipper emergency communication FTP client FTP of the present invention;
Fig. 3 is the communication means flow chart of Big Dipper short message emergency communication base station of the present invention.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment 1
Fig. 1 is the theory diagram of the emergency communication service system based on the Big Dipper of the present invention.
As shown in Figure 1, a kind of emergency communication service system based on the Big Dipper of the present invention, comprising: Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
Concrete, described Big Dipper emergency communication FTP client FTP comprises: Big Dipper emergency communication base station, short-distance wireless communication node; Described Big Dipper emergency communication FTP client FTP is suitable for the data fusion of the information of short-distance wireless communication node, geographical location information, parsing, to provide GSM/GPRS communication service and/or the communication service of Big Dipper short message; Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server, mobile terminal and subscriber computer; Described host computer server is suitable for being communicated with long-range Big Dipper emergency communication FTP client FTP by Big Dipper emergency communication gateway.
Wherein, short-distance wireless communication node includes but not limited to adopt several ZigBee temperature and humidity sensing node, Android panel computer, smart mobile phones;
Described Big Dipper emergency communication service end system also comprises: mobile terminal and subscriber computer, and mobile terminal is several IOS or Android intelligent.
Fig. 2 is the theory diagram of Big Dipper emergency communication FTP client FTP of the present invention.
Further, described Big Dipper emergency communication base station comprises: Big Dipper short message module, GSM/GPRS module, Beidou navigation locating module, radio communication unit, and wherein said Big Dipper short message module, GSM/GPRS module select module to be connected with a processor module respectively by first passage; And described processor module is also connected with the radio communication unit for being connected short-distance wireless communication node with Beidou navigation locating module.
Further, the information that described processor module is suitable for the positioning time obtained by Beidou navigation locating module, longitude and latitude are received with radio communication unit merges mutually; And the packet of fusion is carried out the transmission of Big Dipper short message by Big Dipper short message module, or carry out short message sending by GSM/GPRS module.
Further, described radio communication unit comprises: be suitable for the WiFi module as Wi-Fi hotspot, for the bluetooth module providing bluetooth equipment wireless access to serve; Described WiFi module, bluetooth module select module to be connected with processor module respectively by second channel; And described radio communication unit also comprises: the ZigBee module be connected with processor module; Described processor module is also connected with touch display module, and inputs corresponding control command, data message by touch display module (touch-screen).
First, second channel selecting module described is connected by corresponding serial ports to processor module respectively, and carries out channel selecting by S1 or S2 end.
Further, described processor module is suitable for that the data message inputted by touch display module and positioning time, longitude and latitude and ZigBee module are obtained data message and merges mutually, and the packet of fusion is sent by control command selection Big Dipper short message module, received Big Dipper short message, or by the transmission of GSM/GPRS module, reception note.
Further, described Big Dipper short message emergency communication base station also comprises: power module, described power module comprises: photovoltaic panel, the charging control unit be connected with this photovoltaic panel, described charging control unit charge-discharge end is connected with storage battery, and the output of described charging control unit is as the feeder ear of Big Dipper short message emergency communication base station.Storage battery is 16000mAh standby portable power source, can be commercial power charged, also can be photovoltaic charged, under electric power thus supplied, can cannot be charged by photovoltaic in electric power system, improves the robustness of Big Dipper emergency communication system.
Further, described Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server and/or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP; And Big Dipper emergency communication gateway can also be set to Wi-Fi hotspot, for Android intelligent, host computer server provide WiFi access service.
Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
Host computer server is provided with emergency communication service software and database, for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database preservation, interface display, map denotation, historical query and Service Management; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
Described subscriber computer, such as but not limited to employing PC, is provided with emergency communication application software, adopts WCF mode access and management host computer server, adopts WiFi mode to set up wireless connections and communicate between the two.
As follows as the specific implementation process of the communication means of Big Dipper short message emergency communication base station in the present embodiment 1:
Fig. 3 shows the communication means flow chart of Big Dipper short message emergency communication base station of the present invention.
Described Big Dipper short message emergency communication base station is set to emergency communication terminal pattern, namely selects the communication of Big Dipper short message or GSM/GPRS communication mode, and configuration communication address and preservation parameter; Local positioning time and longitude and latitude is obtained by Beidou navigation locating module; When needs transmission information, touch display module input corresponding data information, carries out data fusion by data message and positioning time and longitude and latitude, then selects Big Dipper short message to send or GSM/GPRS short message sends; When receiving Big Dipper short message or GSM/GPRS information, the data received are resolved and shown.
Further, described Big Dipper short message emergency communication base station is set to emergency communication base station mode, namely selects the communication of Big Dipper short message or GSM/GPRS communication mode, configuration communication address, the also WiFi equipment, bluetooth equipment, the ZigBee equipment that access of setting wireless communication unit, and preserve parameter; Local positioning time and longitude and latitude is obtained by Beidou navigation locating module; When touch display module input corresponding data information, data fusion is carried out to this data message and positioning time and longitude and latitude, ZigBee data, then select Big Dipper short message to send or GSM/GPRS short message sends; Maybe when receiving WiFi packet, data fusion is carried out to the WiFi data received and positioning time, longitude and latitude and ZigBee data; When being the communication of Big Dipper short message when selecting communication mode, the packet of fusion being converted to Big Dipper short message and automatically sending, when being GSM/GPRS communication when selecting communication mode, the packet of fusion being converted to short message and automatically sending; And when receiving Big Dipper short message or GSM/GPRS information, the data received being resolved, and is transmitted to WiFi equipment, or bluetooth equipment, or ZigBee equipment.
Wherein, ZigBee module, as ZigBee telegon, sets up ZigBee-network, builds corresponding ZigBee-network by the ZigBee temperature and humidity sensing node of peripheral hardware as ZigBee-network terminal node, to gather epidemic disaster and to pass to emergency communication base station.
And WiFi module sets up WiFi network, provide Wi-Fi hotspot service, Android panel computer accesses this WiFi network and communicates with it.
At Android panel computer emergency communication APP input communication message information, Big Dipper emergency communication base station is sent to by WiFi network, the Android panel computer information of reception, the positioning time of acquisition are become Frame with longitude and latitude, ZigBee node data fusion by processor module, and Big Dipper short message communication mode selectively sends Frame automatically;
When receiving Big Dipper short message information, processor module carries out Data Analysis, screen display, selects whether be transmitted to Android panel computer according to control field.
The following data framing protocol of use involved in the present invention:
(1) Big Dipper emergency communication base station sends Big Dipper short message application data frame format:
(2) Big Dipper emergency communication base station receives Big Dipper short message application data frame format:
| control field | the information content |
| 8bit, the 0th is 1 expression short message segmentation; 1-4 bit representation segmentation short message sequence number; 5th is 0 be expressed as last short message segmentation; 6-7 position represents when being 01 and is transmitted to WiFi equipment, represents and be transmitted to ZigBee node when being 10. | data information content, the longest 1672bit. |
Embodiment 2
On embodiment 1 basis, present invention also offers a kind of method of work of the emergency communication service system based on the Big Dipper, wherein said emergency communication service system comprises: Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
Further, described Big Dipper emergency communication FTP client FTP is suitable for receiving Beidou II navigation satellite signal, calculating location and temporal information, and receive Big Dipper generation satellite short message information, carry out Data Analysis and be transmitted to short-distance wireless communication node, also be suitable for receiving short-distance wireless communication nodal information, merge user profile, location and time information data, carry out short message transmission; And adopt GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication gateway of Big Dipper emergency communication service end system; Described Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server; Wherein said Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP;
Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (10)
1., based on an emergency communication service system for the Big Dipper, it is characterized in that, comprising:
Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
2. emergency communication service system according to claim 1, is characterized in that,
Described Big Dipper emergency communication FTP client FTP comprises: Big Dipper emergency communication base station, short-distance wireless communication node;
Described Big Dipper emergency communication FTP client FTP is suitable for the data fusion of the information of short-distance wireless communication node, geographical location information, parsing, to provide GSM/GPRS communication service and/or the communication service of Big Dipper short message;
Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server, mobile terminal and subscriber computer;
Described host computer server is suitable for being communicated with long-range Big Dipper emergency communication FTP client FTP by Big Dipper emergency communication gateway.
3. emergency communication service system according to claim 2, is characterized in that,
Described Big Dipper emergency communication base station comprises: Big Dipper short message module, GSM/GPRS module, Beidou navigation locating module, radio communication unit, wherein
Described Big Dipper short message module, GSM/GPRS module select module to be connected with a processor module respectively by first passage; And
Described processor module is also connected with the radio communication unit for being connected short-distance wireless communication node with Beidou navigation locating module.
4. emergency communication service system according to claim 3, is characterized in that,
The information that described processor module is suitable for the positioning time obtained by Beidou navigation locating module, longitude and latitude are received with radio communication unit merges mutually; And the packet of fusion is carried out the transmission of Big Dipper short message by Big Dipper short message module, or carry out short message sending by GSM/GPRS module.
5. emergency communication service system according to claim 4, is characterized in that,
Described radio communication unit comprises: be suitable for the WiFi module as Wi-Fi hotspot, for the bluetooth module providing bluetooth equipment wireless access to serve;
Described WiFi module, bluetooth module select module to be connected with processor module respectively by second channel; And
Described radio communication unit also comprises: the ZigBee module be connected with processor module;
Described processor module is also connected with touch display module, and inputs corresponding control command, data message by touch display module.
6. emergency communication service system according to claim 5, is characterized in that,
Described processor module is suitable for that the data message inputted by touch display module and positioning time, longitude and latitude and ZigBee module are obtained data message and merges mutually, and the packet of fusion is sent by control command selection Big Dipper short message module, received Big Dipper short message, or by the transmission of GSM/GPRS module, reception note.
7. emergency communication service system according to claim 6, it is characterized in that, described Big Dipper short message emergency communication base station also comprises: power module, described power module comprises: photovoltaic panel, the charging control unit be connected with this photovoltaic panel, described charging control unit charge-discharge end is connected with storage battery, and the output of described charging control unit is as the feeder ear of Big Dipper short message emergency communication base station.
8. emergency communication service system according to claim 7, is characterized in that,
Described Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server and/or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP;
Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
9., based on a method of work for the emergency communication service system of the Big Dipper, it is characterized in that,
Described emergency communication service system comprises: Big Dipper emergency communication FTP client FTP, and the Big Dipper emergency communication service end system be connected with this Big Dipper emergency communication FTP client FTP.
10. method of work according to claim 9, is characterized in that,
Described Big Dipper emergency communication FTP client FTP is suitable for receiving Beidou II navigation satellite signal, calculating location and temporal information, and receive Big Dipper generation satellite short message information, carry out Data Analysis and be transmitted to short-distance wireless communication node, also be suitable for receiving short-distance wireless communication nodal information, merge user profile, location and time information data, carry out short message transmission; And adopt GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication gateway of Big Dipper emergency communication service end system;
Described Big Dipper emergency communication service end system comprises Big Dipper emergency communication gateway, host computer server; Wherein
Described Big Dipper emergency communication gateway is suitable for receiving Big Dipper generation satellite short message information, carry out Data Analysis, be transmitted to host computer server or mobile terminal, and receive host computer server or information of mobile terminal, carry out short message transmission, and be also suitable for adopting GSM/GPRS communication mode directly to communicate with the Big Dipper emergency communication base station/terminal of Big Dipper emergency communication FTP client FTP;
Described host computer server is suitable for receiving Big Dipper emergency communication gateway information, carries out Data Analysis, database is preserved, interface display; For providing web access service and management for subscriber computer; For providing WCF access services and management for subscriber computer; For Big Dipper short message information or the management of GSM/GPRS information transmit-receive.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106255061A (en) * | 2016-08-02 | 2016-12-21 | 芜湖航飞科技股份有限公司 | A kind of mobile alarm emergency system based on Beidou navigation |
| CN112104991A (en) * | 2019-06-18 | 2020-12-18 | 深圳市振瀚信息技术有限公司 | Emergency communication network |
| CN115001570A (en) * | 2022-08-03 | 2022-09-02 | 中电防务科技有限公司 | Emergency communication method based on multi-beam satellite mobile communication system |
| CN115001570B (en) * | 2022-08-03 | 2022-10-25 | 中电防务科技有限公司 | Emergency communication method based on multi-beam satellite mobile communication system |
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