CN100589137C - Large scale civil defence alarm multi-stage control system - Google Patents
Large scale civil defence alarm multi-stage control system Download PDFInfo
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Abstract
The invention discloses a large-scale civil defense alarm multilevel control system. The system comprises a control network, an alarm release network and a communication network, wherein the control network consists of a high-level control center, a middle-level control center, a last-level control center and a control subcenter which are connected with one another through the communication network; the alarm release network consists of a subordinate alarming terminal and a non-subordinate alarming terminal; the subordinate alarming terminal is connected with the last-level control center andthe control subcenter through the communication network; the control centers at all levels inside the control network adopt wired communication as the primary communication mode and satellite communication as the subsidiary communication mode; the control network transmits an alarm release command to the alarm release network; and the alarm release network executes the alarm release command. The large-scale civil defense alarm multilevel control system integrates the advantages of various networks has reliable communication and strong survivability and can meet the requirements of alarming ina large scale.
Description
Technical field
The present invention relates to a kind of civil defense warning control system, particularly a kind of large-sized multilevel control system for warning civil defense that merges based on many nets.
Background technology
The civil defense warning control system can be issued the alarm of disaster in the very first time, thereby the guiding common people take the precautionary measures, the influence of disaster mitigation.China's disaster pilosity, and the big disasters of destructiveness such as earthquake, big flood tend to make conventional communication system paralysis.Construction reliability height, the civil defense warning control system that survivability is strong, significant to the security of the lives and property that guarantees the people.
Existing civil defense warning control system, mainly by control center, alarm terminal, and communication network constitutes.Communication network can have multiple choices, such as adopting cable network or ultrashort wave (USW) radio communication.Cable network has that network coverage is wide, the advantage of reliable communications.Yet in case meet with strong destructive disasters such as flood, earthquake, war, wireline communication network is easily destroyed, and is difficult in the short time recover.The ultrashort wave (USW) cordless communication network sets up conveniently, and cost is lower, yet the line-of-sight transmission distance is limited, reliability is not high, in case and wireless station of control center destroyed, the Radio Control Function of network is lost immediately.
With respect to wire communication and ultra short wave communication, satellite communication has clear superiority on reliability, survivability, yet the expense height of satellite communication is applicable to the communication support under burst or other unconventional state.
Summary of the invention
In order to overcome the problem that existing civil defense warning control system exists, the purpose of this invention is to provide a kind of novel large-sized multilevel control system for warning civil defense, the advantage of the comprehensive diverse network of the present invention makes up a kind of reliable communications, civil defense warning control system that survivability is strong; Simultaneously, satisfy large-scale alarm demand.
The objective of the invention is to be achieved through the following technical solutions:
A kind of large-sized multilevel control system for warning civil defense, comprise Control Network, alarm delivery network and communication network, it is characterized in that: described Control Network is made up of senior control center, intermediate control center, final stage control center, control branch center, and connects by communication network between senior control center, intermediate control center, final stage control center and the control branch center; The alarm delivery network is connected with the control branch center with final stage control center by communication network directly under alarm terminal by forming directly under alarm terminal and commentaries on classics genus alarm terminal; Described communication network comprises ultra short wave communication, wire communication, Internet and satellite communication; It is main adopting wire communication between the control centers at different levels in the Control Network, and satellite communication is auxilliary; Described Control Network is transferred to the alarm delivery network with the alarm issue an order, and the alarm delivery network is carried out the alarm issue an order.
Among the present invention, described senior control center has the highest commander's power, carries out alarm issue and log management; Self zone management, alarm issue and log management are carried out in the management downwards successively of middle rank control center, final stage control center, control branch center, and the commander who is subjected to upper level.
The computing machine of control centers at different levels inserts public telephone network by sound card in the Control Network, makes up VPN by Internet, introduces satellite communication between important reference mark.
Control centers at different levels control by computer realization in the Control Network; Final stage control center and control branch center are furnished with ultrashort wave radio set, are responsible for and the communicating by letter directly under alarm terminal of alarm delivery network; Be provided with ultrashort wave radio set directly under alarm terminal, receive the order and the parsing of final stage control center or control branch center, according to the issue of analysis result execution alarm, and the result that will issue feeds back to final stage control center or control branch center.
Described alarm delivery network is based on the ultrashort wave (USW) horizon communication; Directly communicate by letter directly under alarm terminal with final stage control center or control branch center; Described commentaries on classics belongs to alarm terminal outside the horizon communication scope of final stage control center or control branch center, carries out the signal transfer through relaying.
Described alarm delivery network is introduced telephone network as auxiliary means of communication; The computing machine of final stage control center and control branch center inserts telephone network by sound card, outside another termination wireless network coverage of telephone network or particular importance directly under alarm terminal and change to belong to alarm terminal.
There are identical physical arrangement and communication frequency in described control branch center with final stage control center; When the ultrashort wave (USW) equipment damage of final stage control center, the control branch center can be by revising the work that software limitations replaces final stage control center.
A kind of large-sized multilevel control system for warning civil defense of the present invention comprehensively adopts multiple communications conduit to guarantee the reliability of communication.
(1) Control Network networking plan
The Control Network part of a kind of large-sized multilevel control system for warning civil defense of the present invention is responsible for assigning and transmitting of steering order, and then is carried out alternately with the alarm delivery network.Described Control Network is made of multistage Alarm Control Center and various communication network.
A. described multistage Alarm Control Center comprises senior control center, intermediate control center, final stage control center, control branch center, and the effect of control centers at different levels in system is different with the division of labor.
B. senior control center has the highest commander power, mainly is responsible for the issuing of supreme command, the monitoring to all control centers and alarm terminal in the system, the storage administration of data.
C. intermediate control center mainly is responsible for data forwarding, subordinate's region data management (monitoring of subordinate's final stage control center and alarm terminal and data management).Middle rank control center issues final stage control center with the instruction of senior control center, receives the feedback result of final stage control center, stores, and simultaneously feedback result is transmitted a senior control center of giving.
D. final stage control center receives the instruction of middle rank or senior control center, is transmitted to subordinate's alarm terminal, and the feedback result of receiving alarm terminal is stored then, and feedback result is transmitted a intermediate control center that gives.Final stage control center mainly is responsible for the forwarding of instruction and the monitoring and the data management of one's respective area alarm terminal, and it had both belonged to Control Network, also belonged to the alarm delivery network.
E. controlling the branch center has identical physical arrangement with final stage control center, mainly is responsible for subordinate's district management, and as the backup of final stage control center, the survivability of enhanced system.The control branch center had both belonged to Control Network, also belonged to the alarm delivery network.
F. the various communication networks in the described Control Network include spider lines and satellite communication network.Described cable network is based on public telephone network, and Internet is auxilliary.
G. the wire communication scheme of described public telephone network, realize by the following technical solutions: control centers at different levels are by the operational computations machine, send instruction or transmit data, by public telephone network communication, computing machine adopts sound card to insert public telephone network between the computing machine.Described sound card is embedded in the PCI slot of computing machine, and telephone line interface externally is provided, and can directly insert telephone network, so equipment is simple, is particularly suitable for the more catenet of communication object.
H. the wire communication scheme of described Internet as a kind of auxiliary wire communication channel, guarantees the reliability of communication.Make up VPN (virtual private network) VPN by Internet between the control centers at different levels, can guarantee the private ownership and the security of alarm control data transmission.
I. described satellite communication network is as the subsidiary communications means, and the communication when being applicable to the cable network damage can the enhanced system survivability.For cost saving, satellite communication only is used between senior control center, intermediate control center and the indivedual important final stage control center.
J. described intermediate control center or final stage control center can manage the one's respective area independently, assign the alarm order voluntarily, receive and the store feedback result, needn't upwards report.Described intermediate control center is provided with according to demand, if system scale is little, only senior control center and final stage control center can satisfy functional requirement.
Control Network part of the present invention adopts multiple management, and the division of labor at different levels are clear and definite, is specially adapted to the management control of catenet; Control Network partly provides multiple communications conduit, can guarantee the reliability of communicating by letter; Between critical control point, introduce satellite communication, strengthened the survivability of system core part.
(2) alarm delivery network networking plan
The alarm delivery network part of a kind of large-sized multilevel control system for warning civil defense of the present invention is responsible for the instruction of Control Network is published to subordinate's alarm terminal, and the result of alarm is fed back to Control Network.Described alarm delivery network is main means of communication with the ultrashort wave (USW) horizon communication, and public telephone network communication is for auxiliary.
A. described ultrashort wave (USW) horizon communication is mainly used between final stage control center (or control branch center), alarm terminal, the relaying.
B. final stage control center and control branch center all are equipped with ultrashort wave radio set, adopt the ultrashort wave (USW) horizon communication with alarm terminal.
C. alarm terminal mainly be responsible for final stage control center with control the branch center and communicate by letter, carry out the issue of alarm, and the alarm result is fed back.The built-in ultrashort wave radio set of alarm terminal, the alarm terminal that directly carries out the ultrashort wave (USW) horizon communication with final stage control center or control branch center is called directly under terminal.
D. because line-of-sight transmission distance is limited, and may exist barrier to block in the signals transmission, when alarm terminal is in outside the horizon range in final stage control center or control radio station, branch center, need set up the transfer that relaying carries out signal.For guaranteeing that line-of-sight signal is not blocked, relaying needs the frame height.One end of relaying is responsible for communicating by letter with final stage control center or control branch center, and the other end is then communicated by letter with a collection of alarm terminal, and the commentaries on classics that this batch alarm terminal is called this relaying belongs to terminal, and this writes instructions and transfer and belongs to terminal and trunk group of affiliated relaying composition.As required, under final stage control center or the control branch center a plurality of trunk groups can be arranged.
E. on frequency assignation, final stage control center and control branch center use identical frequency of operation with directly under terminal and trunking traffic (being made as f0), relaying then uses this group particular communication frequency and subordinate to change the genus terminal communication, for example, relaying 1 frequency of utilization f1 and this group change the genus terminal communication, and relaying k frequency of utilization fk and this group change the genus terminal communication.Relaying change the independence that communication frequently can guarantee communication in the different trunk groups, avoid communication and the outer mutual interference mutually of communicating by letter of group in the group.
F. described public telephone network communication is used between the alarm terminal (or outside the wireless network coverage alarm terminal) of final stage control center (or control branch center) and particular importance.
G. final stage control center or control branch center computing machine adopt sound card to insert public telephone network, communicate by letter with alarm terminal by public telephone network.
H. the alarm terminal that connects public telephone network, built-in telephony modem module can realize public telephone network communication.
I. final stage control center is identical with control branch center physical arrangement, and use identical frequency of operation, the difference of the two is the status difference in the alarm delivery network: final stage control center can monitor all control branch center and alarm terminals, and the control branch center is owing to the restriction of software setting, only to monitor the subordinate terminal of self; During operate as normal, the control branch center is controlled by final stage control center; When the generation disaster caused the ultra short wave communication function damage of final stage control center, the control branch center can be by revising the setting of software, the restriction of call disestablishment scope, all work of replacement final stage control center.
Alarm delivery network part of the present invention adopts ultra short wave communication to communicate by letter with public telephone network and combines, and has guaranteed the reliability of communication; By introducing relaying, whole network is divided into several groups, both enlarged the coverage of network, be convenient to the Network Layering management again; The control branch center guarantees when destructive disaster takes place that as the backup of final stage control center as long as it is destroyed to have at least a final stage control center and all control branch centers not to have, system still can work.
A kind of large-sized multilevel control system for warning civil defense of the present invention, the scheme that adopts Multistage Control, many nets to merge has following advantage:
1. centralized management is convenient at the Multistage Control center, is applicable to catenet.
2. control centers at different levels computing machine inserts public telephone network by embedded sound card, and equipment is simple.Along with the increase of system scale, only needing increases sound card number and telephone wire, is applicable to large-scale alarm Control Network.
3. Control Network comprehensively adopts cable network and satellite to communicate, and the employing of alarm delivery network is wired, radio communication combines various, the reliable communications of total system communications conduit.
4. introduce satellite communication at the key node of Control Network, as the communication support under the unconventional state, the survivability of Control Network is strong.
5. control the branch center and have identical physical arrangement and frequency of operation with final stage control center, when the ultrashort wave radio set of final stage control center damaged, the control branch center can replace its work, plays the effect of backup, and the ultra short wave communication survivability of system is strong.
Description of drawings
Fig. 1 is a schematic network structure of the present invention;
Fig. 2 is the networking plan synoptic diagram of the alarm delivery network of the subordinate of final stage control center among the present invention.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the schematic network structure of large-sized multilevel control system for warning civil defense of the present invention.Among Fig. 1, large-sized multilevel control system for warning civil defense comprises Control Network 1, alarm delivery network 2 and communication network 3, Control Network 1 is made up of senior control center 11, intermediate control center 12, final stage control center 13, control branch center 14, and connects by communication network 3 between the control center at different levels; Alarm delivery network 2 is connected with control branch center 14 with final stage control center 13 by communication network 3 directly under alarm terminal 21 by forming directly under alarm terminal 21 and commentaries on classics genus alarm terminal 22; Communication network 3 comprises ultra short wave communication, wire communication, Internet and satellite communication; It is main adopting wire communication between the control centers at different levels in the Control Network 1, and satellite communication is auxilliary; Described Control Network 1 is transferred to alarm delivery network 2 with the alarm issue an order, and alarm delivery network 2 is carried out the alarm issue an order.
Fig. 2 is the networking plan synoptic diagram of the subordinate's of final stage control center alarm delivery network.Among Fig. 2,9 computing machines, 10 routers, 4. fire wall, 5. sound card, 6. central control unit, 7.Internet, 8. public telephone network.
(1) system group network scheme
As shown in Figure 1, the physical arrangement of control centers at different levels is similar, all is furnished with the computing machine of monitoring usefulness.The alarm Control Software is installed, by the function that restriction different stage control center is set on the computing machine to software.Described alarm Control Software adopts the RWJK-B alarm Control Software of Nanjing Houhua Communication Apparatus Co., Ltd. according to user's real needs design in this example.
Described control center at different levels mainly passes through wired network communication.Described cable network is based on public telephone network, and Internet is auxilliary.In this example, on the control centers at different levels computing machine sound card is housed, is used for inserting public telephone network (referring to Fig. 2).Simultaneously, intercomputer makes up VPN by Internet, and utilizes encryption technology, guarantees the private ownership and the security of alarm control data transmission.
Described telstar is mainly used between senior control center 11, intermediate control center 12 and the indivedual important final stage control center 13 as the subsidiary communications means of Control Network.Satellite communication can guarantee when the ground cable network is destroyed, communication reliably between the control centers at different levels.
Described alarm delivery network 6 is referring to Fig. 2.
As shown in Figure 2, final stage control center 13 is control ends of alarm delivery network, comprises central computer 9 (alarm Control Software and sound card 5 are installed), router one 0, fire wall 4, and central control unit 6.
Described sound card 5 is embedded in the PCI slot of computing machine 9, and telephone line interface externally is provided, and is used for inserting public telephone network 8.According to the scale of system, can select different sound cards.Adopt east to advance the D161A analog voice card of mechanics of communication incorporated company in this example, it provides 16 telephone channels, and unit can be inserted 16 cards at most, and the RJ11 interface externally is provided, and can directly insert public telephone network 8 by twisted pair telephone.Adopt C# language that sound card is carried out secondary development in this example, so that better compatible with this routine RWJK-B alarm Control Software.By programming the encapsulation of sound card communication function and being embedded in the alarm Control Software, realized that the user is by the transparent operation of alarm Control Software to sound card.
Described router one 0 and fire wall 4 are used for realizing that computing machine inserts Internet7.
Described central control unit 6 can receive control command by Serial Port Line or telephone wire, and carry out ultra short wave communication by ultrashort wave radio set and alarm terminal.Adopt the RWJK-B central control unit of Nanjing Houhua Communication Apparatus Co., Ltd. in this example.
Described control branch center 14 has identical physical arrangement with final stage control center 13.Difference is that the two has different call blockings by the setting to the alarm Control Software.Central computer 9 can be called out alarm terminals all under this control center.The branch center computing machine only can be called out the alarm terminal under this control branch center.Simultaneously, central control unit 6 as shown in Figure 2 is controlled by central computer 9 by Serial Port Line, and will instruct and be distributed to all directly under terminal (and relaying) by frequency f 0.And the central control unit in the control branch center is controlled by the branch center computing machine by Serial Port Line, simultaneously also be controlled by central computer 2 by telephone wire, it also is operated in frequency f 0, but because software limitations, it only can with the communicating by letter of self subordinate directly under terminal (with relaying).
Described directly under alarm terminal (with relaying) 21 comprise the center directly under alarm terminal 211, have center that line is connected directly under alarm terminal 212, have branch center that line connects directly under alarm terminal 215, branch center directly under alarm terminal 216, and the center is directly under relaying (relaying 1 ... relaying k) and the branch center directly under relaying (relaying k+1 ... relaying n).
Described commentaries on classics belongs to the commentaries on classics that alarm terminal 22 comprises relaying 1 subordinate and belongs to alarm terminal ..., relaying n subordinate's commentaries on classics belongs to alarm terminal.Described alarm terminal adopts the RWJK-B alarm control terminal of Nanjing Houhua Communication Apparatus Co., Ltd. in this example.Described relaying adopts the RWJK-B trunking of Nanjing Houhua Communication Apparatus Co., Ltd. in this example.
A described end of communicating by letter with the higher level directly under alarm terminal and relaying all is operated on the frequency f 0, and described commentaries on classics belongs to alarm terminal 22 and relaying and belongs to an end of communicating by letter with commentaries on classics and be operated on the specific frequency of this group.For example, relaying 1 belongs to an end and the commentaries on classics genus alarm terminal thereof of communicating by letter with commentaries on classics and all is operated on the frequency f 1, end that relaying k communicates by letter with the commentaries on classics genus and commentaries on classics thereof belong to alarm terminal and all are operated on the frequency f k, and end that relaying n communicates by letter with the commentaries on classics genus and commentaries on classics genus alarm terminal thereof all are operated on the frequency f n.The frequency of operation of each group separately, guaranteed in the group with the group outside not mutual interference mutually of communication.And the frequency of operation of center and branch center is identical, then makes the function that the branch center where necessary can implementation center, the survivability of enhanced system.
Alarm delivery network shown in Figure 2 combines wire communication simultaneously based on ultra short wave communication: final stage control center 13 and control branch center 14 communicate by public telephone network 8 and Internet7; Indivedual important alarm terminals (for example alarm terminal 212), important relaying 1 (number in the figure 213), the alarm terminal (for example alarm terminal 215) that ultrashort wave (USW) can't arrive, then need to relend and help public telephone network communication, realize that the control end computing machine utilizes public telephone network 8 control alarm terminals.
(2) system communication example
A kind of communication instance of a kind of large-sized multilevel control system for warning civil defense of the present invention is as follows:
Senior control center passes through the operational alarm Control Software, will order by cable network to convey to intermediate control center, final stage control center, control branch center successively.Final stage control center and subordinate's control branch center by serial ports to the central control unit forward command, final stage control center also by sound card by public telephone network, the central control unit forward command to all control branch centers of subordinate.Central control unit sends order by ultrashort wave radio set.Receive the relaying of ultrashort wave (USW) signal, do not add any judgement ground information is transmitted.The alarm terminal that receives ultrashort wave (USW) information is then resolved order, owing to specified the platform number (all alarm terminals all have own unique platform number) of the alarm terminal of calling out in the order, alarm terminal determines by resolving whether self is the object of calling out.If not, then do not carry out any action; If then control warning horn and send corresponding alarm, and send feedback to control end by the radio station.
Simultaneously, indivedual special alarm points have also been carried out wired connection by public telephone network.Control centers at different levels computing machine by the operational alarm Control Software, calls the phone that sound card is put through the subordinate's alarm terminal that needs, and sets up wired connection.The user is by activating alarm order under the software, and the transmission of public telephone network is sent in order through the sound card modulation.Subordinate's alarm terminal built-in telephony modem can receive the data from public telephone network, and data are carried out demodulation, and the digital signal after the demodulation is admitted to alarming controller and resolves.Alarming controller sends corresponding alarm according to analysis result control warning horn, and notice phone modem sends feedback to control end.The sound card that sends the control center of order receives the data that feedback is come, and is demodulated to digital signal and sends into computing machine, and the alarm Control Software is taken out the data of receiving, for user's monitoring.
If meet with strong destructive disaster, cause cable network damage in ground can adopt following scheme communication: senior control center is given final stage control center with pass down the line via satellite, final stage control center by central control unit to the instruction that gives the alarm of this alarm delivery network.If disaster causes the central control unit damage of final stage control center, can't send instruction to this alarm delivery network, can be by revising the software setting of a certain control branch center, change local information into final stage control center by the control branch center, and with all control the information importing of branch center, relaying and alarm terminals under the final stage control center, at this moment this control branch center just can substitute final stage control center, has monitored alarm terminals all in this alarm delivery network.
Claims (5)
1, a kind of large-sized multilevel control system for warning civil defense, comprise Control Network (1), alarm delivery network (2) and communication network (3), it is characterized in that: described Control Network (1) is made up of senior control center (11), intermediate control center (12), final stage control center (13), control branch center (14), and connects by communication network (3) between senior control center (11), intermediate control center (12), final stage control center (13) and the control branch center (14); Alarm delivery network (2) is connected with control branch center (14) with final stage control center (13) by communication network (3) directly under alarm terminal (21) by forming directly under alarm terminal (21) and commentaries on classics genus alarm terminal (22); Described communication network (3) comprises ultra short wave communication, wire communication, Internet and satellite communication; It is main adopting wire communication between the control centers at different levels in the Control Network (1), and satellite communication is auxilliary; Described Control Network (1) is transferred to alarm delivery network (2) with the alarm issue an order, and alarm delivery network (2) is carried out the alarm issue an order;
Described senior control center (11) has the highest commander's power, carries out alarm issue and log management; Middle rank control center (12), final stage control center (13), control branch center (14) be management downwards successively, carries out self zone management, alarm issue and log management, and the commander who is subjected to upper level;
There are identical physical arrangement and communication frequency in described control branch center (14) with final stage control center (13); When the ultrashort wave (USW) equipment damage of final stage control center (13), control branch center (14) replaces the work of final stage control center (13).
2, a kind of large-sized multilevel control system for warning civil defense according to claim 1, it is characterized in that: the computing machine of control centers at different levels inserts public telephone network by sound card in the Control Network (1), make up VPN by Internet, between important reference mark, introduce satellite communication.
3, a kind of large-sized multilevel control system for warning civil defense according to claim 1 is characterized in that: control centers at different levels control by computer realization in the Control Network (1); Final stage control center (13) and control branch center (14) are furnished with ultrashort wave radio set, are responsible for and the communicating by letter directly under alarm terminal (21) of alarm delivery network (2); Be provided with ultrashort wave radio set directly under alarm terminal (21), receive the order and the parsing of final stage control center (13) or control branch center (14), according to the issue of analysis result execution alarm, and the result that will issue feeds back to final stage control center (13) or control branch center (14).
4, a kind of large-sized multilevel control system for warning civil defense according to claim 1 is characterized in that: described alarm delivery network (2) is based on the ultrashort wave (USW) horizon communication; Directly communicate by letter directly under alarm terminal (21) with final stage control center (13) or control branch center (14); Described commentaries on classics belongs to alarm terminal (22) outside the horizon communication scope of final stage control center (13) or control branch center (14), carries out the signal transfer through relaying.
5, a kind of large-sized multilevel control system for warning civil defense according to claim 4 is characterized in that: described alarm delivery network (2) is introduced telephone network as auxiliary means of communication; The computing machine of final stage control center (13) and control branch center (14) inserts telephone network by sound card, outside another termination wireless network coverage of telephone network or particular importance directly under alarm terminal (21) and change genus alarm terminal (22).
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| CN1548987A (en) * | 2003-05-16 | 2004-11-24 | 远传电信股份有限公司 | Geographical disaster monitoring and alarming system of application communication network |
| CN1555031A (en) * | 2003-12-22 | 2004-12-15 | 高金铎 | Intelligent warning system and method through internet |
| CN2831639Y (en) * | 2005-09-29 | 2006-10-25 | 华瑞龙腾（北京）信息技术有限公司 | Long-range controller |
-
2008
- 2008-10-06 CN CN200810156166A patent/CN100589137C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1548987A (en) * | 2003-05-16 | 2004-11-24 | 远传电信股份有限公司 | Geographical disaster monitoring and alarming system of application communication network |
| CN1555031A (en) * | 2003-12-22 | 2004-12-15 | 高金铎 | Intelligent warning system and method through internet |
| CN2831639Y (en) * | 2005-09-29 | 2006-10-25 | 华瑞龙腾（北京）信息技术有限公司 | Long-range controller |
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