CN202050427U - Intelligent networking management platform for fire emergency communication - Google Patents
Intelligent networking management platform for fire emergency communication Download PDFInfo
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- CN202050427U CN202050427U CN 201120137288 CN201120137288U CN202050427U CN 202050427 U CN202050427 U CN 202050427U CN 201120137288 CN201120137288 CN 201120137288 CN 201120137288 U CN201120137288 U CN 201120137288U CN 202050427 U CN202050427 U CN 202050427U
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Abstract
The utility model discloses an intelligent networking management platform for fire emergency communication and relates to the technical field of fire wired and wireless speech communication. The intelligent networking management platform for the fire emergency communication a wireless channel access controller, a wireless user access controller, a serial communication server, a speech exchange server and a control management server, wherein the front end of the wireless channel access controller is connected with all kinds of wireless channel machines or terminals and the rear end of the wireless channel access controller is tandem connected with the serial communication server and the speech exchange server through an RS232 port and a three-wire audio interface to realize the access to and the control of a wireless speech communication network by a system. By using the intelligent networking management platform for the fire emergency communication and by manually operating or reading prearranged configuration parameters in a fire rescue scene, the platform can rapidly group different communication means and roles according to a command principle to ensure that communications among groups are not interfered with each other; and a commander can realize wired/wireless speech commanding and dispatching of any combat unit in the scene and fire rescue combat efficiency is improved.
Description
Technical field
The utility model relates to fire-fighting the wireless voice communication technical field, and specifically, relating to the fire-fighting fire extinguishing rescue site respectively has wireless communication speech subsystem intelligent networking control and management technology.
Background technology
Requirement according to GB50313-2010 " Code for design of fire communication and commant system ", the urban fire control wireless communication networks should be made up of following three grades of nets, is respectively urban fire control area under one's jurisdiction nerve of a covering (one-level net), floor manager net (secondary net) and fire fighting and rescue fight net (three grades of nets).At present in the extensive use of China's fire-fighting emergent rescue site, this pattern is the organic combination of vertical and horizontal contact, can bring into play the command function that mechanism is organized and directed in the scene of a fire to greatest extent, guarantee rear Dispatch and Command Center with the place ahead commander, floor manager person and fight to order to upload smoothly between squad leader and the fighter and assign, present stage means of communication mainly be based on routine or cluster wireless technology such as 350M, 400M or 800M.
But along with development of Communication Technique, satellite communication, short wave communication, mobile public network and other communication modes also are widely applied in the fire-fighting fire extinguishing rescue communication system.Especially at particularly serious disaster assistance scene, under the situation of trans-regional many formations combined operation,, do not have ripe easy-to-use equipment at present and realize that the unified of on-the-spot all communication systems inserts and management because belligerent army is many, the organizational system combination is complicated, communication technique is various.Next is that frequency resource is limited, the special-purpose frequency of whole nation fire-fighting is three Dan Sanshuan only, the single-frequency point that is used for the communication in fire scene net has only three, many squadrons do serious problem of co-channel interference can occur wartime, be easy to cause scene of a fire radio communication commander chaotic, liaison meeting generation is serious between the upper and lower level in scene of fire and between the forward and backward side disturbs, even interrupts, bungle the chance of winning a battle, have a strong impact on the performance of fire fighting strength.
Publication number is the patent of invention " a kind of wireless emergency communication synthesis scheduling system " of CN101374344A, though it has mentioned the voice communication problem that can solve between the wireless of different technologies system and the wired communication system user, but it is a kind of general emergency communication dispatching patcher, not in full conformity with the actual needs of fire brigade fire fighting and rescue floor manager scheduling.Concrete manifestation is as follows: because the limitation of system design, the access capability of system is limited, does not mention the access solution of satellite phone, VOIP phone and 3G mobile communication; The control and management function is limited, does not mention the management application model of three grades of nets of fire-fighting, does not promptly have the grouping management function, and this function is extremely important when the combined operation of trans-regional many formations; Do not mention sound-recording function etc.
Summary of the invention
The utility model at the existing voice communication technology and in fire fighting and rescue is used existing the problems referred to above fire-fighting emergent communication intelligence networking management platform is provided, its main purpose is: at particularly serious fire fighting and rescue scene, during trans-regional many formations combined operation, this platform can be with different systems, the wireless voice communication system unification that has that different technologies is realized is linked on the standard platform, by exchange, control and scheduling, guarantee between the place ahead and the rear, reach between the different belligerent units independent separately between commander and the fighter according to three grades of networking principles, avoid interference, guarantee that command scheduling order and on-the-spot feedback information are uploaded smoothly to assign.
The purpose of this utility model is achieved through the following technical solutions: fire-fighting emergent communication intelligence networking management platform comprises wireless channel access controller, wireless user's access controller, serial communication server, exchange of speech server and control and management server.
The front end of wireless channel access controller connects all kinds of wireless channel machines or terminal, the rear end is by standard RS232 interface and three-wire system audio interface and serial communication server and the tandem of exchange of speech server, and the realization system is to the access and the control of wireless voice communication network.
Wherein, the wireless channel access controller is mainly realized the access in shortwave, routine and cluster radio station, realizes audio frequency access, frequency switching, State Control and functions such as instruction modulation and decoding.
Wireless user's access controller is realized the access of wireless mobile public network user, realizes voice communication, note and data transmit-receive function;
The upstream data of wireless channel access controller and wireless user's access controller serial port module is monitored/received to the serial communication server and in real time to Web broadcast, down channel packet on the real-time monitoring/reception network, and the wireless channel that sends to appointment inserts and wireless user's access controller serial port module the exchanges data and the control and management of realization wireless access terminal such as conventional radio station or GSM/CDMA/3G user terminal.
The voice that the exchange of speech server is responsible for wireless access channel controller and wireless user's access controller, satellite phone, VOIP phone, outside line and dispatching telephone insert, and realize that the wireless speech that has access to exchanges arbitrarily, divides into groups, recording, playback, caller ID display and facsimile function.
The control and management server is realized the management to hardware device, finishes device initialize, state-detection and control.
Described wireless channel access controller comprises: wireless channel access module, antenna emission mixer and antenna received branch unit.
Described wireless channel access module comprises three types: normal channel access module, group system access module and short-wave radio set access module.
Described antenna emission mixer is made up of passive device 3DB coupler, isolator and load.
Described antenna received branch unit is made up of the power divider of signal preselector, Low Noise Wideband RF Amplifier and the supporting power supply and the passive component of active parts.
Described wireless channel access module mainly comprises: channel frequency controller, transmitting power controller, instruction modulator, instruction decoder, voice-grade channel controller and audio frequency access controller.
The channel frequency controller can realize that by the frequency switching command of serial communication server reception control and management server 32 channel softwares automatically switch.
Transmitting power controller controls transmitter power, realizes that high (20W), low (10W) 2 grades of softwares automatically switch.
The instruction modulator receives the digital command of control and management server, and becomes simulation command to send to the front end radio reception device this instruction transformation.
The dummy instruction of instruction decoder receiving front-end wireless device, and this dummy instruction is converted to digital command sends to the control and management server by the serial communication server, realize the modulation and demodulation of wireless signalings such as DTMF, 1327, MDC1200, WHMD2000 by instruction modulator and instruction decoder.
The voice-grade channel controller is realized voice-grade channel switching logic and impedance, is mated control.
The audio frequency access controller is realized being connected with the W type audio interface of exchange of speech server, realizes the input and the output of audio signal.
Described wireless user's access controller refers to have the module that access GSM/CDMA/3G 3 classes move public network wireless speech function, mainly comprise: speech control module, short message receiving-transmitting control module, data transmit-receive module, can directly dial and reply the calling, the receipts/send short messages that come from the GSM/CDMA/3G mobile network, realize the GPRS/CDMA2000-1X/3G wireless data service.
Described serial communication server comprises: master control Switching Module, network access module, many serial ports access module;
Described a plurality of serial ports access module is connected with wireless user's controller serial ports with the wireless channel access controller, and each serial ports access module all has surge protection function, effectively avoids device damage; Network access module is connected by network mode with the control and management server, realizes that the wireless access terminal status information of equipment is uploaded with order such as control and management to assign; The master control Switching Module is realized the mutual conversion of network data and serial data.
Described exchange of speech server mainly comprises: speech channel access module, routing module control, recording module, playback module, caller display control module, fax module.
The multi-direction interactive voice of different communication networks such as that the exchange of speech controller is used to realize is conventional wireless, cluster wireless, satellite communication, short wave communication, mobile subscriber, telephone, VOIP phone and dispatching telephone is communicated by letter.
Described speech channel access module provides W, L, 3 kinds of speech channel types of Y, and wherein the W type adopts the uneven wireless audio interface of standard three-wire system, is used to connect wireless channel and wireless user's speech; The L type adopts standard FXS interface 2 line systems, is used for connecting scheduling and inside line; The Y type adopts standard FXO interface 2 line systems, is used to connect PSTN outside line, VOIP phone and satellite phone, by VOIP phone and the conversation of far-end wire user, needs to connect the VOIP residence gateway.
Described routing module control can be realized 32 Multi-Party Conference phone groups, and wired, wireless and scheduling can exist in the same conference group simultaneously.
Described recording module and playback module can be realized the independent recording and the player function of a certain voice channel, and recording file can directly use universal player software to play.
Described caller display control module is supported the caller identification of DTMF and FSK standard, can show VOIP number, PSTN number and phone number etc.
Described fax module is realized facsimile service by PSTN or satellite communication.
The beneficial effects of the utility model: use fire-fighting emergent communication intelligence networking management platform of the present utility model, at the fire fighting and rescue scene, by manual operation or read the prediction scheme configuration parameter, platform can be fast divide into groups different communication means and role according to commander's principle, the assurance group with organize between communicate by letter and do not disturb mutually.Use this platform and can form dendritic longitudinally command system and horizontal ring-type command system rapidly, guarantee writing to each other between each inter-stage and constituent parts, realize direct and on-the-spot the having/the wireless speech command scheduling of combat unit arbitrarily of commander, guarantee that the commander in time understands field condition, guarantee in the very first time deployment that makes a policy, really, improve the fire fighting and rescue Operational Effectiveness Rat intention on through officers and men quickly and accurately of fighting.
Description of drawings
Fig. 1 is the entire system logic diagram.
Fig. 2 is a wireless channel access controller logic diagram.
Fig. 3 is a wireless channel access module logic diagram.
Fig. 4 is the circuit theory diagrams of wireless channel access module.
Fig. 5 is wireless user's access controller logic diagram.
Fig. 6 is serial communication server logic figure.
Fig. 7 is exchange of speech server logic figure.
Embodiment
Fire-fighting emergent communication intelligence networking management platform comprises wireless channel access controller, wireless user's access controller, serial communication server, exchange of speech server and control and management server composition, and the entire system logic as shown in Figure 1.
Wherein, the front end of wireless channel access controller connects all kinds of wireless channel machines or terminal, the rear end is by standard RS232 interface and three-wire system audio interface and serial communication server and the tandem of exchange of speech server, the realization system is to the access and the control of wireless voice communication networks such as conventional wireless network, standard cluster net, short wave communication network, and receipts/routines such as state, voice-grade channel switching logic and impedance matching of finishing all kinds of wireless channel machines are controlled.
Can also pass through SPI or SCI serial device interfaces, realization is to the control of the inner higher-order logic of the wireless channel machine that possesses SPI or SCI interface, senior functions such as the frequency by the direct control channel machine of upper layer software (applications), the switching of power, receipts/send out quiet are hot-tempered realize the software wireless management function.
The upstream data of wireless channel access controller and wireless user's access controller serial port module is monitored/received to the serial communication server and in real time to Web broadcast, down channel packet on the real-time monitoring/reception network, and the wireless channel that sends to appointment inserts and wireless user's access controller serial port module the exchanges data and the control and management of realization wireless access terminal such as conventional radio station or GSM/CDMA/3G user terminal.
The voice that the exchange of speech server is responsible for wireless access channel controller and wireless user's access controller, satellite phone, VOIP phone, outside line and dispatching telephone insert, and realize that the wireless speech that has access to exchanges arbitrarily, divides into groups, recording, playback, caller ID display and facsimile function.
The control and management server mainly is made up of each software module, realizes the management of each hardware device, finishes device initialize, state-detection and control etc.Realize having in access, exchange and the control etc. of wireless speech application function once by software modules such as dispatching management, carry out and disperse to insert, unified dispatching management operational mode.
The wireless channel access controller mainly comprises: wireless channel access module and antenna emission mixer and antenna received branch unit.Its logical construction as shown in Figure 2.
The wireless channel access module has three types to be respectively: normal channel access module, group system access module and short-wave radio set access module, plug into respectively conventional radio station, cluster radio station and short-wave radio set.The module of each type all has that 6 kinds of controllers, specifically comprises: channel frequency controller, transmitting power controller, instruction modulator, instruction decoder, voice-grade channel controller and audio frequency access controller.Wireless channel access module logical construction as shown in Figure 3.
The channel frequency controller can realize that by the frequency switching command of serial communication server reception control and management server 32 channel softwares automatically switch.At the models such as GP3688, GP328/338, GM3688 and GM3188 of Motorola, increase special-purpose signaling control board, following special control and management function can be provided: the aerial operating frequency of switching hand-held or Vehicle mounted station in the net need not user's manual intervention; The operating state of hand-held or Vehicle mounted station comprises in the aerial control net; Receive/send out and prohibit sound (cluster mode) entirely, prohibit to send out and can't help receiving (broadcast mode), prohibit to receive and can't help sending out (listen mode), receive/send out a standard-sized sheet and send out (normal mode); Can adopt the ring reminding type to call out to the hand-held or Vehicle mounted station of single (individual calling), a plurality of (group callings), a unit (grouping busy); Can implement distant getting killed to hand-held or Vehicle mounted station, forbid its work, also can instruct and remove distant getting killed.
Transmitting power controller controls transmitter power, realizes that high (20W), low (10W) 2 grades of softwares automatically switch.
The instruction modulator receives the digital command of control and management server, and becomes simulation command to send to the front end radio reception device this instruction transformation.
The dummy instruction of instruction decoder receiving front-end wireless device, and this dummy instruction is converted to digital command sends to the control and management server by the serial communication server, realize the modulation and demodulation of wireless signalings such as DTMF, 1327, MDC1200, WHMD2000 by instruction modulator and instruction decoder.
The voice-grade channel controller is realized voice-grade channel switching logic and impedance, is mated control.The audio frequency access controller is realized being connected with the W type audio interface of exchange of speech server, realizes the input and the output of audio signal.
The circuit theory diagrams of wireless channel access module are as shown in Figure 4:
Wherein voice-grade channel controller and audio frequency access controller are finished the audio frequency controlled function by IC18 DDTMF-5 chip and peripheral circuit thereof; Channel frequency controller and instruction modulator are finished channel frequency control and instruction modulation function by IC13 AT90S8515 chip and peripheral circuit thereof; Transmitting power controller and instruction decoder are finished transmitting power control and instruction decoding function by IC17 AT89C51 chip and peripheral circuit thereof.
The antenna emission mixer of wireless channel access controller is made up of passive device 3DB coupler, isolator and load, volume closes the road less than the cavity type, remedied the bigger defective of cavity mixer frequency interval simultaneously, minimum frequency space can be accomplished 25KHz, under the multichannel system situation, increased the choice of frequency.
The antenna received branch unit of wireless channel access controller is made up of the power divider of signal preselector, Low Noise Wideband RF Amplifier and the supporting power supply and the passive component of active parts.When system adopts 350,000,000 and 400,000,000 frequency compounding to use, then need to adopt 2 cover and above antenna splitting devices.
Wireless user's access controller refers to have the module that 3 classes such as inserting GSM/CDMA/3G move public network wireless speech function, and its logical construction as shown in Figure 5.Mainly comprise: speech control module, short message receiving-transmitting control module, data transmit-receive module.Can directly dial and reply the calling, the receipts/send short messages that come from the GSM/CDMA/3G mobile network, realize the GPRS/CDMA2000-1X/3G wireless data service.
The serial communication server mainly comprises: master control Switching Module, network access module, many serial ports access module.Its logical construction as shown in Figure 6.
A plurality of serial ports access module are connected with wireless user's controller serial ports with the wireless channel access controller, and each serial ports access module all has surge protection function, effectively avoids device damage.Network access module is connected by network mode with the control and management server, realizes that the wireless access terminal status information of equipment is uploaded with order such as control and management to assign.The master control Switching Module is realized the mutual conversion of network data and serial data.
The exchange of speech controller mainly comprises: speech channel access module, routing module control, recording module, playback module, caller display control module, fax module.Its logical construction as shown in Figure 7.
The exchange of speech controller realizes that by upper strata dispatching management software the multi-direction interactive voice of different communication networks such as conventional wireless, cluster wireless, satellite communication, short wave communication, mobile subscriber, telephone, VOIP phone and dispatching telephone communicates by letter.
The speech channel access module provides W, L, 3 kinds of speech channel types of Y, the W type, and the uneven wireless audio interface of standard three-wire system is used to connect wireless channel and wireless user's speech.The L type, standard FXS interface 2 line systems are used for connecting scheduling and inside line.The Y type, standard FXO interface 2 line systems are used to connect PSTN outside line, VOIP phone and satellite phone, by VOIP phone and the conversation of far-end wire user, need to connect the VOIP residence gateway.
Routing module control can be realized 32 Multi-Party Conference phone groups, and wired, wireless and scheduling can exist in the same conference group simultaneously.
Recording module and playback module can be realized the independent recording and the player function of a certain voice channel, and recording file can directly use universal player software to play.
The caller display control module is supported the caller identification of DTMF and FSK standard, can show VOIP number, PSTN number and phone number etc.Load fax module and realize facsimile service by PSTN or satellite communication.
Modules such as the control and management server mainly comprises wireless communication channel management and control, wireless user's call management and control, wire user call management and control, communicate by letter route switching management and control, system's recording playback management and control, wireless signaling and control command transmitting-receiving, the setting of command predetermined plan messaging parameter, data maintenance management, system configuration and running parameter are provided with, implementation platform managing hardware device and dispatch control function integrated.
Above-described only is preferred embodiment of the present utility model.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, also should be considered as belonging to protection range of the present utility model.
Claims (6)
1. fire-fighting emergent communication intelligence networking management platform comprises wireless channel access controller, wireless user's access controller, serial communication server, exchange of speech server and control and management server;
The front end of wireless channel access controller connects all kinds of wireless channel machines or terminal, the rear end is by standard RS232 interface and three-wire system audio interface and serial communication server and the tandem of exchange of speech server, and the realization system is to the access and the control of wireless voice communication network;
Wherein, the wireless channel access controller is mainly realized the access in shortwave, routine and cluster radio station, realizes audio frequency access, frequency switching, State Control and instruction modulation and decoding function;
Wireless user's access controller is realized the access of wireless mobile public network user, realizes voice communication, note and data transmit-receive function;
The upstream data of wireless channel access controller and wireless user's access controller serial port module is monitored/received to the serial communication server and in real time to Web broadcast, down channel packet on the real-time monitoring/reception network, and the wireless channel that sends to appointment inserts and wireless user's access controller serial port module the exchanges data and the control and management of realization wireless access terminal such as conventional radio station or GSM/CDMA/3G user terminal;
The voice that the exchange of speech server is responsible for wireless access channel controller and wireless user's access controller, satellite phone, VOIP phone, outside line and dispatching telephone insert, and realize that the wireless speech that has access to exchanges arbitrarily, divides into groups, recording, playback, caller ID display and facsimile function;
The control and management server is realized the management to hardware device, finishes device initialize, state-detection and control.
2. fire-fighting emergent communication intelligence networking management platform according to claim 1, it is characterized in that: described wireless channel access controller comprises: wireless channel access module, antenna emission mixer and antenna received branch unit;
Described wireless channel access module comprises three types: normal channel access module, group system access module and short-wave radio set access module;
Described antenna emission mixer is made up of passive device 3DB coupler, isolator and load;
Described antenna received branch unit is made up of the power divider of signal preselector, Low Noise Wideband RF Amplifier and the supporting power supply and the passive component of active parts.
3. fire-fighting emergent communication intelligence networking management platform according to claim 2, it is characterized in that: described wireless channel access module mainly comprises: channel frequency controller, transmitting power controller, instruction modulator, instruction decoder, voice-grade channel controller and audio frequency access controller;
The channel frequency controller can realize that by the frequency switching command of serial communication server reception control and management server 32 channel softwares automatically switch;
Transmitting power controller controls transmitter power, realizes that high (20W), low (10W) 2 grades of softwares automatically switch;
The instruction modulator receives the digital command of control and management server, and becomes simulation command to send to the front end radio reception device this instruction transformation;
The dummy instruction of instruction decoder receiving front-end wireless device, and this dummy instruction is converted to digital command sends to the control and management server by the serial communication server, realize the modulation and demodulation of wireless signalings such as DTMF, 1327, MDC1200, WHMD2000 by instruction modulator and instruction decoder;
The voice-grade channel controller is realized voice-grade channel switching logic and impedance, is mated control;
The audio frequency access controller is realized being connected with the W type audio interface of exchange of speech server, realizes the input and the output of audio signal.
4. fire-fighting emergent communication intelligence networking management platform according to claim 1, it is characterized in that: described wireless user's access controller refers to have the module that access GSM/CDMA/3G 3 classes move public network wireless speech function, mainly comprise: speech control module, short message receiving-transmitting control module, data transmit-receive module, can directly dial and reply the calling, the receipts/send short messages that come from the GSM/CDMA/3G mobile network, realize the GPRS/CDMA2000-1X/3G wireless data service.
5. fire-fighting emergent communication intelligence networking management platform according to claim 1, it is characterized in that: described serial communication server comprises: master control Switching Module, network access module, many serial ports access module;
Described a plurality of serial ports access module is connected with wireless user's controller serial ports with the wireless channel access controller, and each serial ports access module all has surge protection function, effectively avoids device damage; Network access module is connected by network mode with the control and management server, realizes that the wireless access terminal status information of equipment is uploaded with order such as control and management to assign; The master control Switching Module is realized the mutual conversion of network data and serial data.
6. fire-fighting emergent communication intelligence networking management platform according to claim 1, it is characterized in that: described exchange of speech server mainly comprises: speech channel access module, routing module control, recording module, playback module, caller display control module, fax module;
The multi-direction interactive voice of different communication networks such as that the exchange of speech controller is used to realize is conventional wireless, cluster wireless, satellite communication, short wave communication, mobile subscriber, telephone, VOIP phone and dispatching telephone is communicated by letter;
Described speech channel access module provides W, L, 3 kinds of speech channel types of Y, and wherein the W type adopts the uneven wireless audio interface of standard three-wire system, is used to connect wireless channel and wireless user's speech; The L type adopts standard FXS interface 2 line systems, is used for connecting scheduling and inside line; The Y type adopts standard FXO interface 2 line systems, is used to connect PSTN outside line, VOIP phone and satellite phone, by VOIP phone and the conversation of far-end wire user, needs to connect the VOIP residence gateway;
Described routing module control can be realized 32 Multi-Party Conference phone groups, and wired, wireless and scheduling can exist in the same conference group simultaneously;
Described recording module and playback module can be realized the independent recording and the player function of a certain voice channel, and recording file can directly use universal player software to play;
Described caller display control module is supported the caller identification of DTMF and FSK standard, can show VOIP number, PSTN number and phone number;
Described fax module is realized facsimile service by PSTN or satellite communication.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185714A (en) * | 2011-05-04 | 2011-09-14 | 公安部沈阳消防研究所 | Intelligent networking management platform for fire emergency communication |
| CN103117827A (en) * | 2012-12-31 | 2013-05-22 | 熊猫电子集团有限公司 | Method for achieving short-wave radio station dialing number transmission |
| CN105262666A (en) * | 2015-09-10 | 2016-01-20 | 浙江凯池电子科技有限公司 | Interconnected terminals for emergency communication and interconnection method thereof |
| CN109831224A (en) * | 2018-07-18 | 2019-05-31 | 海南宝通实业公司 | It is a kind of to be transferred the letter the equipment of expansible common-frequency simulcasting based on single channel |
-
2011
- 2011-05-04 CN CN 201120137288 patent/CN202050427U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185714A (en) * | 2011-05-04 | 2011-09-14 | 公安部沈阳消防研究所 | Intelligent networking management platform for fire emergency communication |
| CN102185714B (en) * | 2011-05-04 | 2013-05-29 | 公安部沈阳消防研究所 | Intelligent networking management platform for fire emergency communication |
| CN103117827A (en) * | 2012-12-31 | 2013-05-22 | 熊猫电子集团有限公司 | Method for achieving short-wave radio station dialing number transmission |
| CN103117827B (en) * | 2012-12-31 | 2015-04-22 | 熊猫电子集团有限公司 | Method for achieving short-wave radio station dialing number transmission |
| CN105262666A (en) * | 2015-09-10 | 2016-01-20 | 浙江凯池电子科技有限公司 | Interconnected terminals for emergency communication and interconnection method thereof |
| CN109831224A (en) * | 2018-07-18 | 2019-05-31 | 海南宝通实业公司 | It is a kind of to be transferred the letter the equipment of expansible common-frequency simulcasting based on single channel |
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