CN103874042A - Wireless two-way transmission movable emergency system - Google Patents
Wireless two-way transmission movable emergency system Download PDFInfo
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- CN103874042A CN103874042A CN201410132669.6A CN201410132669A CN103874042A CN 103874042 A CN103874042 A CN 103874042A CN 201410132669 A CN201410132669 A CN 201410132669A CN 103874042 A CN103874042 A CN 103874042A
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Abstract
The invention discloses a wireless two-way transmission movable emergency system which comprises a command center, base station units, vehicular units and a portable unit. The command center is connected with the base station units respectively through optical fibers, and is also connected with the base station units through a wireless transmission mode. The base station units are also connected mutually through a wireless transmission mode, and signals are also transmitted between the base station units and the vehicular units through a wireless transmission mode. The portable unit is connected with the vehicular units by adopting a two-way connection mode. Two-way transmission modules are also arranged in the vehicular units and the base station units respectively, the two-way transmission modules can amply frequency conversion transmitted signals in two ways to achieve two-way transmission of multimedia information. The wireless two-way transmission movable emergency system has the advantages that time division duplex communication, point-to-multipoint communication and MESH networking communication of remote multimedia information can be achieved in a moving process under emergency situations, and an emergency communication command system which is flexible, multipurpose and economical is formed.
Description
Technical field
The present invention relates to wireless communication technology field, particularly a kind of moving emergency system of wireless two-way transmission.
Background technology
In the middle of some special sectors and some special occasions, for example, public security special policeman needs the multimedia messages of the video at these accident scenes, voice and data to be sent in real time command centre at the scene of anti-smuggling fire fighting, frontier defense People's Armed Police at stability maintenance, Fire soldier sometimes, and command centre also needs to carry out reverse interaction with scene, swap data.Therefore the emergent radio communication system that, a set of function of needs is stronger is as support.General mobile communication technology has:
(1) adopt Digital Terrestrial Mobile TV transmission technology, although can realize real-time Transmission image and voice in moving process, but this technology is one-way transmission, can not realize single-frequency two-way operation, the bi-directional data as the Internet be can not transmit, single-frequency point-to-multipoint delivery and MESH group-net communication more can not be realized.
(2) 3G of telecom operators and 4G technology, adopt the networking of microcellulor mode, between each base station, work alone, can not be interconnected in MESH mode between base station, if need build a lot of base stations and lay a large amount of relay base station compared with telecommunication, so just need to waste more resource.
(3) communication system based on WIFI working method, but the wireless communication system operating frequency of WIFI mode is higher, generally in the above microwave frequency of 2400MH, its operating frequency is higher, run into while there being barrier its diffracting power poor and cause wireless signal decay very large, add its power lower (lower than 1W), so transmission range is very short, be not suitable for setting up emergency communication system.
Summary of the invention
For addressing the above problem, the invention provides a kind of moving emergency system of wireless two-way transmission, there is the function of the remote-wireless communication of closely time division duplex, point-to-multipoint, MESH group-net communication, realize and in VHF frequency range, successfully realize high-power, two-way, point-to-multipoint MESH group-net communication at a distance.
For achieving the above object, the technical solution used in the present invention is: a kind of moving emergency system of wireless two-way transmission, it is characterized in that, comprise command centre, base station unit, board units and portable unit, described command centre is respectively by the multiple base station units of fiber optic links, and it also uses the mode of wireless transmission to be connected with multiple base station units; Between described base station unit, also the mode by wireless transmission interconnects, and it also passes through the mode signal transmission of wireless transmission with multiple board units respectively; Described portable unit adopts the mode of two-way connection to be connected with board units; Described board units and base station unit inside are also respectively equipped with transmitted in both directions module, this transmitted in both directions module can Bi-directional amplifier frequency conversion the signal of transmission reach the multimedia messages of transmitted in both directions.
Adopt after technique scheme, between base station unit of the present invention, can interconnect by wireless transmission method, described command centre can connect base station unit in succession by optical fiber direct, also can transmit data to base station unit by the mode of wireless connections; Can realize transmitted in both directions image, sound and other internet datas; Transmission between described board units and base station unit adopts wireless transmission, has reduced the laying amount of optical fiber, reduces the expense of engineering; Base station board units can also use as relay base station simultaneously, for some board units are to the place not reaching, use portable unit to arrive place and collects data and transmission commander instruction; Described portable unit also can be used as a terminal, uses one or more same portable unit to carry out relay transmission, has so just improved the covering power of system on a large scale.
Furthermore, described transmitted in both directions module also comprises two-way frequency conversion amplifier, amplifying circuit, low loss filter and low noise cancellation circuit, and connects successively with said sequence.
Adopt after technique scheme, after the collection of transmitted in both directions module of the present invention video and audio to spot by two-way frequency conversion amplifier and low loss filter is processed, and being transferred to base station unit by board units, it can work in the low-power of 2.4GHZ microwave frequency band; Can be converted to simultaneously and in VHF frequency range, realize high-power, remote two-way multimedia mobile communication.
Furthermore, described board units also comprises removable computer, the network switch, encoder, video camera, loud speaker, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, the described network switch is connected with center processing unit, encoder and removable computer are two-way respectively, described center processing unit is connecting modulation circuit and is reconciling circuit, the controlled mode of described switch connects respectively modulation circuit and reconciles circuit, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter, and described encoder is connected with loud speaker respectively at video camera, and this video camera can also feed back to encoder by the audiovisual information of collection.
Furthermore, described base station unit also comprises relay transmission unit, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, described relay transmission unit is connected with command centre is wired or wireless, the unidirectional connection modulation circuit of described center processing unit, conciliation circuit and relay transmission unit, described switch is controlled connection modulation circuit and conciliation circuit respectively, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter.
Furthermore, native system adopts advanced WDS(wireless distribution system agreement) communication pattern, between base station unit and board units, adopt MAC Address mode one to one, also adopted WPA-PSK and WPA2-EAP multiple data cipher mode to be encrypted aloft simultaneously.
Adopt after such scheme, system of the present invention adopts multi-enciphering means in wireless communication procedure, has guaranteed safe, the transmission reliably of the data such as image, voice, and disabled user is difficult to decode, and encryption performance meets the requirement of military-grade.
Furthermore, described transmitted in both directions module adopts two-way frequency conversion amplifier technology, makes to work in the low-power of 2.4GHZ microwave frequency band, closely time division duplex communication technology is successfully converted to and in VHF frequency range, realizes high-power, remote two-way multimedia mobile communication.
Beneficial effect of the present invention is: the present invention can realize transmitted in both directions video and audio, described base station unit can be realized wireless two-way transmission data, at the interior base station unit that can reduce laying of same range, can also provide for portable unit the effect of a relay base station simultaneously; And base station unit can be supported the working method of a point-to-multipoint, base station unit both can with near base station unit UNICOM, also can be used as multiple portable units provides the effect of relay base station; The place that described board units can not arrive can be carried portable unit by individual soldier's mode and be carried out image data to scene; The present invention is had and be convenient for carrying, flexible Application, the feature that working region is wide.Time division duplex, a point-to-multipoint, the MESH group-net communication that can in quick solution moving process under case of emergency, realize more remote multimedia messages (containing video, voice and data), can be some special sectors and build flexible, multiplex, economic emergency communication command system in specific occasion.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is another kind of structural representation of the present invention.
Fig. 3 is another kind of structural representation of the present invention.
Fig. 4 is another kind of structural representation of the present invention.
Embodiment
As Figure 1-4, the present invention is about a kind of moving emergency system of wireless two-way transmission, it is characterized in that, comprise command centre, base station unit, board units and portable unit, described command centre is respectively by the multiple base station units of fiber optic links, and it also uses the mode of wireless transmission to be connected with multiple base station units; Between described base station unit, also the mode by wireless transmission interconnects, and it also passes through the mode signal transmission of wireless transmission with multiple board units respectively; Described portable unit adopts the mode of two-way connection to be connected with board units; Described board units and base station unit inside are also respectively equipped with transmitted in both directions module, this transmitted in both directions module can Bi-directional amplifier frequency conversion the signal of transmission reach the multimedia messages of transmitted in both directions.
Above-mentioned transmitted in both directions module also comprises two-way frequency conversion amplifier, amplifying circuit, low loss filter and low noise cancellation circuit, and connects successively with said sequence.
Above-mentioned board units also comprises removable computer, the network switch, encoder, video camera, loud speaker, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, the described network switch is connected with center processing unit, encoder and removable computer are two-way respectively, described center processing unit is connecting modulation circuit and is reconciling circuit, the controlled mode of described switch connects respectively modulation circuit and reconciles circuit, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter, and described encoder is connected with loud speaker respectively at video camera, and this video camera can also feed back to encoder by the audiovisual information of collection.
Above-mentioned base station unit also comprises relay transmission unit, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, described relay transmission unit is connected with command centre is wired or wireless, the unidirectional connection modulation circuit of described center processing unit, conciliation circuit and relay transmission unit, described switch is controlled connection modulation circuit and conciliation circuit respectively, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter.
The system of foregoing invention adopts advanced WDS(wireless distribution system agreement) communication pattern, between base station unit and board units, adopt MAC Address mode one to one, also adopted WPA-PSK and WPA2-EAP multiple data cipher mode to be encrypted aloft simultaneously.
Above-mentioned transmitted in both directions module adopts two-way frequency conversion amplifier technology, makes to work in the low-power of 2.4GHZ microwave frequency band, closely time division duplex communication technology is successfully converted to and in VHF frequency range, realizes high-power, remote two-way multimedia mobile communication.
Above execution mode is only that the preferred embodiment of the present invention is described; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that the common engineers and technicians in this area make technical scheme of the present invention, all should fall in the definite protection range of claims of the present invention.
Claims (6)
1. the moving emergency system of a wireless two-way transmission, it is characterized in that, comprise command centre, base station unit, board units and portable unit, described command centre is respectively by the multiple base station units of fiber optic links, and it also uses the mode of wireless transmission to be connected with multiple base station units; Between described base station unit, also the mode by wireless transmission interconnects, and it also passes through the mode signal transmission of wireless transmission with multiple board units respectively; Described portable unit adopts the mode of two-way connection to be connected with board units; Described board units and base station unit inside are also respectively equipped with transmitted in both directions module, this transmitted in both directions module can Bi-directional amplifier frequency conversion the signal of transmission reach the multimedia messages of transmitted in both directions.
2. the moving emergency system of wireless two-way transmission according to claim 1, is characterized in that: described transmitted in both directions module also comprises two-way frequency conversion amplifier, amplifying circuit, low loss filter and low noise cancellation circuit, and connects successively with said sequence.
3. the moving emergency system of wireless two-way transmission according to claim 1, is characterized in that: described board units also comprises removable computer, the network switch, encoder, video camera, loud speaker, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, the described network switch is connected with center processing unit, encoder and removable computer are two-way respectively, described center processing unit is connecting modulation circuit and is reconciling circuit, the controlled mode of described switch connects respectively modulation circuit and reconciles circuit, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter, and described encoder is connected with loud speaker respectively at video camera, and this video camera can also feed back to encoder by the audiovisual information of collection.
4. the moving emergency system of wireless two-way transmission according to claim 1, is characterized in that: described base station unit also comprises relay transmission unit, center processing unit, modulation circuit, conciliation circuit, switch and antenna emitter; Wherein, described relay transmission unit is connected with command centre is wired or wireless, the unidirectional connection modulation circuit of described center processing unit, conciliation circuit and relay transmission unit, described switch is controlled connection modulation circuit and conciliation circuit respectively, and be connected with two-way frequency conversion amplifier, described antenna emitter is connected with described low loss filter.
5. the moving emergency system of wireless two-way transmission according to claim 1, it is characterized in that: native system adopts advanced WDS(wireless distribution system agreement) communication pattern, between base station unit and board units, adopt MAC Address mode one to one, also adopted WPA-PSK and WPA2-EAP multiple data cipher mode to be encrypted aloft simultaneously.
6. the moving emergency system of wireless two-way transmission according to claim 1, it is characterized in that: described transmitted in both directions module adopts two-way frequency conversion amplifier technology, make that it works in the low-power of 2.4GHZ microwave frequency band, closely time division duplex communication technology is successfully converted to and in VHF frequency range, realizes high-power, remote two-way multimedia mobile communication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410132669.6A CN103874042A (en) | 2014-04-03 | 2014-04-03 | Wireless two-way transmission movable emergency system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410132669.6A CN103874042A (en) | 2014-04-03 | 2014-04-03 | Wireless two-way transmission movable emergency system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105472781A (en) * | 2016-01-07 | 2016-04-06 | 新疆迅达中天信息科技有限公司 | Portable field emergency comprehensive communication and command system |
| CN107979566A (en) * | 2016-10-25 | 2018-05-01 | 北京计算机技术及应用研究所 | A kind of emergent video-encryption transmission equipment of double-channel fusion |
| CN108599803A (en) * | 2018-06-28 | 2018-09-28 | 安徽沧浪网络科技有限公司 | A kind of backpack individual soldier transmitting device and its method |
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| CN101909270A (en) * | 2010-08-20 | 2010-12-08 | 北京中运人安消防设备有限公司 | Wireless communication command system for emergency rescue scene |
| US20110217990A1 (en) * | 2008-11-21 | 2011-09-08 | Hideaki Tetsuhashi | Mobile communication terminal, base station, warning system and method for controlling mobile communication terminal |
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2014
- 2014-04-03 CN CN201410132669.6A patent/CN103874042A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20110217990A1 (en) * | 2008-11-21 | 2011-09-08 | Hideaki Tetsuhashi | Mobile communication terminal, base station, warning system and method for controlling mobile communication terminal |
| CN101909270A (en) * | 2010-08-20 | 2010-12-08 | 北京中运人安消防设备有限公司 | Wireless communication command system for emergency rescue scene |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105472781A (en) * | 2016-01-07 | 2016-04-06 | 新疆迅达中天信息科技有限公司 | Portable field emergency comprehensive communication and command system |
| CN107979566A (en) * | 2016-10-25 | 2018-05-01 | 北京计算机技术及应用研究所 | A kind of emergent video-encryption transmission equipment of double-channel fusion |
| CN108599803A (en) * | 2018-06-28 | 2018-09-28 | 安徽沧浪网络科技有限公司 | A kind of backpack individual soldier transmitting device and its method |
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Application publication date: 20140618 |
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