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1、 Overview

In the event of a sudden disaster in a mine, time is life. Command and dispatch personnel may not be able to notify on-site personnel in a short period of time through telephone or wireless mobile phones due to the blockage of the telephone communication system. Delays may be caused by on-site personnel being unable to communicate or not answering calls in a timely manner, or serious errors may be caused by communication errors. Due to the limited scope and slow speed of information dissemination, the favorable opportunity for risk avoidance has been lost.

According to the notice from the State Administration of Work Safety and the State Administration of Coal Mine Safety on the construction and improvement of the “six major systems” for underground safety avoidance in coal mines, coal mining enterprises should actively promote the use of underground emergency broadcasting and communication systems. When a dangerous situation occurs, it is necessary to promptly notify underground personnel to evacuate. The emergency broadcasting and communication system plays an important role in the daily production and life of mines. Under normal circumstances, broadcasting signals release news, internal information, daily routine signals, provide background music, as well as paging and forcibly inserting emergency broadcasts of catastrophic accidents through the mine information network. It is an indispensable component of mine safety production.

To ensure that coal mining enterprises can notify underground workers in the fastest and simplest way when encountering emergencies, take corresponding safety measures, and guide relevant personnel to evacuate urgently, achieving timely and effective emergency rescue. Our company has developed a digital, IP based, SIP based, video based, and intelligent emergency rescue command system for coal mines, taking into account the current situation and development direction of coal mine emergency broadcasting communication systems and video surveillance. We use technologies such as digital, microcontroller encoding and decoding, and embedded software. This system integrates safety broadcasting, video monitoring, dispatch and command, safety monitoring, and public voice. It is a new generation of digital voice system and has been recognized by many mining industries.

At present, the expansion terminals in the mining industry are generally dominated by analog telephone or network broadcasting, achieving on-site expansion and broadcasting. The new generation of mine emergency broadcasting system can achieve remote video monitoring, visual communication, and broadcasting functions underground, and is currently an alternative product to the mine emergency broadcasting communication system.

The mining broadcasting system not only has the integration communication of remote broadcasting, remote video monitoring, expanded telephone access, emergency calling, visual intercom, wired telephone, wireless telephone and other systems, but also has the advantages of long transmission distance, large installation range, good anti-interference, strong control function, etc. It can be integrated with coal mine safety monitoring system, mining industry environmental monitoring system, precise location system, video monitoring system, etc.

2. Analysis of the Current Situation of Mining Emergency Broadcasting and Communication System

The collection, transmission, and storage of audio signals in early mining emergency broadcasting communication systems were all analog, using constant voltage broadcasting for transmission and responding to all calls. However, since digital emergency broadcasting systems have not yet emerged, data transmission and regional broadcasting cannot be carried out through the network. The constant pressure emergency broadcasting communication system has good real-time performance, but it has disadvantages such as occupying a lot of line resources, easy distortion of audio signals during transmission, and small communication range.

The proposal of “digital mines” has gradually applied digital voice communication to coal mine safety production. Currently, the mine emergency broadcasting communication system is in the stage of mixed application of analog and digital. Digital broadcasting has the advantages of pure sound quality, strong anti-interference ability, large coverage area, and complete functions. Its application prospects are broader than those of constant pressure broadcasting. More and more mining enterprises are starting to use digital voice communication technology to replace analog voice communication technology. Especially with the rise of VOIP technology, it has driven the industrial revolution of IP digitization. The visual emergency broadcasting communication system based on VOIP digitization can be integrated into the mine production scheduling system. Therefore, the digital emergency broadcasting communication system is an inevitable trend in building “digital mines”.

3. Plan composition

The mine emergency broadcasting system consists of a system server, a paging phone, a touch screen dispatch console, a network transmission part, a mining intrinsic safety expansion terminal, a mining visual expansion terminal, a mining power supply, etc. The network transmission structure can be divided into tree network structure and Ethernet based transmission structure. The difference between a tree network structure and an Ethernet based transmission structure is that the former has a network structure similar to a hand in hand structure, where any damage to a point can affect the subsequent terminal transmission. The structure based on industrial ring network transmission does not have the drawbacks of the former, and can also save construction costs.

The system server or pager implements broadcasting, calling, calling, conference, and management of underground broadcast terminals through the network. The underground broadcasting terminal can call the dispatch room, which can be linked with nearby video surveillance cameras or calls initiated by visual broadcasting speakers to achieve visual communication with underground calling personnel. In emergency situations, dispatch and command personnel can forcibly open visual broadcast terminals with visual functions for video monitoring, improving the dispatch and command capabilities.

Underground broadcasting speakers are divided into intrinsically safe broadcasting speakers for mining and visual broadcasting speakers for mining. Both have functions such as hands-free, handle off hook communication, calling, answering, dialing, emergency calling, broadcasting, etc. The difference is that mining visual broadcasting speakers have bidirectional visual communication function, which can achieve high-definition bidirectional video intercom. Underground and ground command centers can achieve bidirectional video communication. In case of emergency in the mine, dispatch and command personnel can achieve remote video monitoring and video calls through visual broadcast speakers, achieving the purpose of visual dispatch.

The mining emergency broadcasting system is not only the emergency command system of the mine, but also the backup communication system of the mine. The system supports video linkage, network registration, conference, scheduling, integration with mine safety monitoring system, environmental monitoring system, personnel positioning system, etc. It can also be integrated and interconnected with the production scheduling system and wireless communication system of the mine.

3.1 Tree network structure transmission

3.2 Based on industrial Ethernet transmission

3.3 Integrated communication methods

The integrated communication method refers to the integration of wired telephone, wireless communication, and emergency broadcasting through the industrial ring network registered with the integrated communication server of the intrinsically safe mining broadcasting speaker, achieving unified scheduling and

command.

4.Main functions

4.1. Call

(1) Bidirectional hands-free call: After the call is answered, immediately use hands-free communication, broadcasting, etc., suitable for use in places with very high noise levels.

(2) Bidirectional off hook call: Off hook call, once connected, immediately calls, full duplex with echo cancellation function.

(3) Bidirectional visual call: supports one-way or two-way visual call, and audio and video synchronization transmission.

4.2. Multi party calls

(1) Conference mode: Supports multi-party communication with up to 32 terminals (full duplex, hands-free with echo cancellation), and the conference can be interrupted by high priority intercom calls. The conference will resume after the intercom ends.

(2) Command mode: Supports multi-party communication with up to 32 terminals (full duplex, hands-free with echo cancellation), and command can be interrupted by high priority intercom calls. Command will resume after the intercom ends.

(3) Response mode: Supports up to 64 terminals in response mode for multi-party communication (full duplex).

4.3. Call

(1) Single click call: Quickly call to the designated target terminal, and each terminal can independently set the call target.

(2) Number key dialing call: By dialing with number keys, you can call any target terminal.

(3) Group call: Different levels, district teams, and application scenarios can set up different groups (or groups). By using the group calling button on the speaker, the system can call a set group (or group) with just one click, and automatically call a batch of terminals.

4.4. Call response

(1) Automatic answering: The called terminal can be set to automatically switch to call mode after ringing 0-9 times.

(2) Manual answer: The called terminal rings continuously until the manual button or handle responds.

4.5. Partition broadcasting

Different regions, levels, and units can be set as different groups (or groups), and different groups (or groups) can be divided into different zones. Different broadcasting methods can be set through different zones, such as different zones and scheduled broadcasting content; Different partitions have different broadcast content, etc. The dispatch station or paging telephone can broadcast calls and calls to terminals in single or multiple zones.

4.6. Monitoring

The terminal is equipped with a built-in microphone, which can monitor the sound situation around the terminal in the main control room.

4.7. Background music

The terminal speaker can play background music.

4.8. External control

The alarm output port of the terminal can control the alarm lights or door locks; Alarm input port, can be externally connected with a red emergency button.

4.9. Digital recording

The system automatically records digital recordings of two-way and multi-party calls, and the recording files are stored in the server‘s hard drive.

4.10. Scheduling function

Equipped with conventional scheduling functions, such as calling, group calling, forced insertion, forced dismantling, monitoring, answering, blind forwarding, negotiation forwarding, recording, hotline scheduling, conference, broadcasting, and other functions.

4.11. Interconnection and interoperability with other systems

The emergency broadcasting communication system supports digital relay interfaces, loop relay interfaces, SIP relay interfaces, etc., and can be interconnected with dispatch communication systems, wireless communication systems, local operators, etc.

4.12. Video linkage

The emergency broadcasting and communication system terminal has a linked nearby video monitoring function, which can link the video monitoring camera while calling and answering calls, achieving the purpose of video monitoring and video calling.

4.13. Linkage with other systems

The emergency broadcasting communication system can be linked with the mine safety monitoring system, environmental monitoring system, precise positioning system, video monitoring system, and other systems to achieve, for example, when the mine gas exceeds the limit or toxic and harmful gas exceeds the limit, the emergency broadcasting communication system can achieve linkage with the safety monitoring system, environmental monitoring system, precise positioning system, video monitoring system for safety warning and broadcasting. (Develop and connect based on the actual needs of the owner and the existing system)

4.14. Network management function

(1) Network diagnosis function: automatic topology, automatic detection and self-healing of ring network faults;

(2) Automatic discovery function;

(3) Remote configuration function;

(4) Remote software upgrade.

5. Main technical parameters of the product

5.1 System server

5.1.1. Electrical parameters

(1) Power supply and power consumption: 100-220V, AC: ≤ 65W;

(2) Working temperature and humidity: -10~60 ° C, ≤ 90% (non condensing)

(3) Processor and memory: high-performance dual core, 4G

(4) Hard disk: 1T

(5) Interface: 2 standard RJ45 (10/100/1000Base-T), 1 RS232 interface, and 2 USB 2.0 interfaces

(6) Size: rack mounted, 1U

(7) Network protocols: ARP, IP, ICMP, TCP, UDP, SIP

(8) Voice coding: G.722 (broadband), G.711a, G.711u, AMR

(9) Supporting protocols: RFC3261, RFC3262, RFC3263, RFC3264, RFC1889, RFC1890

5.1.2. System performance

(1) Terminal registration capacity: 100

(2) Number of concurrent calls: 100

(3) Concurrent recording channels: 100

5.1.3. Main functions:

(1) Intercom function: two-way call, video call, one click help, call recording

(2) Scheduling functions: forced insertion, forced disassembly, call monitoring, multi-party meetings

(3) Broadcasting functions: zone broadcasting, call out broadcasting, scheduled broadcasting, music broadcasting, text broadcasting

(4) Video function: Video linkage

(5) Telephone functions: incoming and outgoing calls

(6) Alarm function: triggering alarms and alarm plans

5.2 SM-KS101 Video Telephone Set

SM-KS101 is a visual large screen paging station product developed specifically for industry user needs, equipped with a gooseneck microphone and supporting high-definition hands-free calls. Based on the Android 9.0 system, it can support the installation and use of third-party Android applications, with a convenient interface. Adopting a 10.1-inch color touch screen, with built-in Bluetooth 5.0 module and 2.4G/5G Wi Fi module, and integrated USB 2.0 interface. Compatible with standard SIP protocol, it can be used as a monitoring center and leadership office management host, and can make calls, two-way intercoms, monitor/monitor, and broadcast calls to hosts and extensions within the management area. SM-KS101 can maximize the efficiency of daily business management and emergency response capabilities for enterprises.

5.2.1. Basic functions

1) 20 SIP lines

2) High definition voice

3) Support video calls

4) 10.1-inch 1280×800 color touch screen

5) Handle/Handsfree/Headphone Mode

6) Intelligent DSS keys (virtual buttons, touch)

7) Android OS 9.0

8) Built in applications: Explorer, calendar, camera, gallery, web browser, email, calculator, notepad, recorder, clock, video player, music.

9) Interface: Built in Bluetooth 5.0 module and 2.4G/5G Wi Fi module, with integrated USB 2.0 interface

5.2.2. Main technical parameters

1) Power supply: 5V/2A or PoE

2) 10/100/1000Mbps Ethernet (Bridge Mode)

3) Video decoding: H.264/H.265 (Optional)

4) Video call resolution: CIF/VGA/4CIF/720P/1080P

5) Protocol: SIP2.0 over UDP/TCP/TLS

6) Narrowband encoding: G.711a/u, G.729AB, iLBC

7) Broadband encoding: G.722, Opus

8) Working temperature: 0-45 ℃

9) Relative humidity: 10-95%

10) Installation method: desktop style

5.3 Technical indicators of intrinsically safe mining broadcasting speakers

1. Power supply voltage: DC12V~24V

2. Remote transmission of power supply: ≥ 500 meters

3. Network interface: 10/100Base-T, RJ-45

4. Network protocols: TCP/IP, UDP, ARP, ICMP, IGMP, SIP

5. Audio encoding: PCM, MP3, voice G.729, G.722, G.726

6. Echo cancellation: Supports G.168, maximum 96ms

7. Output volume: 10W,

8. Sound: not less than 110dB

9. Shell strength: Designed with stainless steel, resistant to impact and compression;

10. Protection design: IP67, can be immersed in water;

11. Installation method: Wall mounted.

5.4 Technical specifications of intrinsically safe visual broadcasting speakers for mining use

1). Explosion proof type: Mining intrinsic safety type

2). Working voltage: DC12V~24V

3). Remote transmission of power supply: ≥ 200 meters

4). Communication protocol: SIP v1 (RFC2543), SIP 2.0 (RFC-3261)

5). Encoding and decoding: G.729AB, G.711A/U, iLBC, G.722, Opus

6). Music output power: 10W

7). Sound: not less than 110dB

8). Gigabit optical port: 2 single-mode dual fibers

9). 100Mbps electrical port: quantity: 2 channels (intrinsic safe output);

5.5 KDW660/18B Mining Explosion proof and Intrinsic Safety Power Supply

1). Explosion proof type: Explosion proof and intrinsic safety type

2). Waterproof level: IP54

3). Input voltage: AC127V/380V/660V

4). Rated output voltage: Intrinsically safe DC 12V, output current: 1300mA; Intrinsically safe DC 18V, output current: 850mA

5). Protection method: dual overvoltage and overcurrent protection

6). Backup power function: The backup time is not less than 2 hours

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The party and the government attach great importance to the work of food and drug supervision, and all the plenaries since the 18th party congress have made major arrangements for food safety. Food safety is not only related to our physical and mental health, but also affects the healthy development of our economy and social harmony and stability. However, food safety supervision is a long-term, dynamic supervision process, not once and for all. Through information-based supervision, grasp the work of food safety, reduce the probability of food safety risks.

Food safety has always been a matter of people‘s livelihood that we attach great importance to. Our country‘s food safety problems mainly have the following characteristics:

1. Food safety issues are common

Food and beverage kitchen inspection less, less restrictions, dirty and poor, such as serious phenomenon, frequent food safety accidents.

2. Food safety supervision is difficult

For the regulatory authorities, the number of catering units, but the number of regulatory personnel is insufficient, relatively weak regulatory power, it is difficult to achieve effective supervision.

3. There are many illegal operations

For food and beverage organizations, the daily operation is difficult to standardize and unify, often do not wear a work cap, do not wear work clothes, do not wear masks and other irregular behavior

 4. Food safety is difficult to trace

For the public at large, it is difficult to know where the ingredients come from and give feedback on the food.

The food safety law, enacted in October 2015, provides the main basis for ensuring food safety and provides a legal and institutional guarantee for the systematic and orderly resolution of current food safety problems, opening a new stage in China‘s food safety supervision.

Integrating cutting-edge technologies such as the Internet, artificial intelligence, Edge Computing and data science, integrating existing resources such as market supervision departments, education departments, and intelligent network engineering, and innovating regulatory and service means, build an internet + “Bright kitchen kitchen light stove” intelligent monitoring platform, break through the food safety-related data“Perception, knowledge, use” chain, automatic collection of sensors, video surveillance, food supply chain, key personnel and other multi-source data, through data fusion into knowledge, reasonable guidance decision-making; change can be regarded as knowable, alarm into early warning, we should use technology to prevent human defense, improve the intelligence of food safety supervision and scientific decision-making, and form a coordinated management pattern of“Subject self-discipline, government supervision and social supervision”, jointly build and govern the“Sunshine Kitchen” to ensure food safety.

In view of the characteristics of the food safety industry, combined with the supervision requirements of Internet + “Bright kitchen and bright stove” put forward by the national regulatory authorities, Huamai Zhilian utilizes its own technology and experience in the Communication Command and dispatch industry, the following problems can be solved for the food safety industry.

1. Construction of Food and Drug Emergency Command Center

The Emergency Command Center is the control center of the Food and Drug Emergency Command and dispatch system. All commands in emergency management are issued from the command center, which is the Control Center for the regulatory department to handle public emergencies, it is mainly about the management of emergency handling, which can register, handle, track and feedback the emergency, synthesize the situation, release and report the final incident.

The Emergency Command Center has set up a secondary command center, and the Regional Command Center is connected with the Regional Command Center, and the Supervisory Department conducts remote command of the scene through the command center, access to the food and drug monitoring platform can collect data from the scene analysis for the Emergency Command Center to provide an accurate judgment of the emergency command.

2. video surveillance and video conference system support

he video surveillance includes two parts: the video surveillance of food production and management and the image management of law enforcement surveillance, which can connect with the video surveillance equipment of the main body of food production and management, law enforcement officers can use the law enforcement recorder or mobile soldiers to video recording of law enforcement, on-site photos and so on, for monitoring platform spot checks, law enforcement use.

3. Comprehensive law enforcement supervisionIntegrated law enforcement supervision can display the main body of food business on the map of the command and dispatch system, and can view the relevant information of enterprises by clicking on the label points, and can also supervise food safety through administrative management and administrative law enforcement, through grid management, supervision and inspection and case management can be timely and better supervision of food safety.

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Background of program construction

Law Enforcement Recorder is a kind of scientific and technological law enforcement product developed rapidly in recent years, and it is also a kind of police equipment which is concerned by the public security system all over the country. Law Enforcement Recorder set of digital photography, photography, audio recording and other functions in one, can be on the law enforcement process of action, static and objective records. At present, the law enforcement recorder can not only effectively promote the police to enforce the law in a normal, just and civilized manner, but also effectively safeguard the police‘s legitimate rights and interests. But while most existing law enforcement recorders can record audio and video of the scene, they can not transmit images in real time, nor do they have global GPS or Beidou positioning, it can not cooperate with the back-end monitoring, dispatching and commanding platform system to realize the remote dispatching and commanding function for outdoor mobile individuals.

customer needs 0f the law enforcement industry 

To build a 4G/5G visual command and dispatch system, to realize the global positioning of the police while on duty, 4G/5g wireless graph transmission function, and to record video and audio on the spot, and upload the recorded data to the system database, it can realize the functions of storage, cataloging, retrieval, management, examination, research and judgment, etc. . Compared with the traditional recorder, the 4G/5G intelligent law enforcement recorder can transmit the video in real time, which is helpful for the remote dispatch and the real-time inspection of the scene, and makes the law enforcement more convenient and the command dispatch more powerful, will further promote the regularization of the team, law enforcement standardization, effectively enhance the police‘s law enforcement credibility.

Based on the background of the law enforcement industry, the requirements of the visual command and dispatch system of the law enforcement of the public security system were investigated in-depth. The requirements were as follows:

Real-time control: the leadership of remote supervision and management, through monitoring and command platform, synchronization of 4G/5G law enforcement recorder voice, video on-site situation, real-time control of on-site law enforcement process, results, enhance the level of law enforcement management;

Standardized law enforcement: cross-regional and cross-level law enforcement information inquiry, transfer and statistics, effective control of law enforcement officers on the scene of law enforcement, standardize the law enforcement process, to play the value of law enforcement information.

Visualization of law enforcement: to display the information of law enforcement personnel and their location through geographic information map, so as to enhance the overall control ability of the command center.

Fixed evidence in time: due to the law enforcement recorder with synchronous audio and video recording function, for some of the sudden illegal facts can be fixed timely evidence, on-site law enforcement is crucial.

Coordinated Command: in the event of a major incident, the platform provides a flexible means of dispatch, the command centre personnel can direct command of front-line personnel, civilian police on duty on the front line can report directly to the command centre as needed, can also be live video back to the commander, to achieve flat command of emergency operations.

Improve the efficiency of disposal: through 4G/5G law enforcement recorder can real-time transmission of the scene to the command center, to facilitate the command center staff to conduct timely research and disposal, improve the overall efficiency of law enforcement.

Prevention of non-compliance law enforcement: Command Center personnel through 4G/5G remote control real-time access to duty personnel scene, the formation of invisible supervision deterrent, to ensure the implementation of public justice, to eliminate human relations law enforcement.

Improve public satisfaction: the command center can real-time access to 4G/5G law enforcement terminal video and audio, in law enforcement in the face of the people pay attention to words and deeds, pay attention to attitude, let duty personnel to maintain a rational, smooth, civilized, standard law enforcement process, and improve the people‘s satisfaction.

Effective Protection of officers on duty: in case of non-cooperation with law enforcement, the front-line law enforcement police can truthfully restore the situation on the scene after the event by recording the whole process of the incident, to protect the rights and interests of frontline law enforcement police to provide effective evidence.

Visual Law Enforcement Command and dispatch system framework

Hua Mai Zhi Lian 4G/5G visual command and dispatch system is integrated with video, voice and data services, it provides a multi-function platform for voice scheduling, trunking, video conference, audio and video monitoring, audio and video on demand, live broadcast, data upload, data forward, short message, service data application, GPS positioning and tracking, etc. .

Advantages and characteristics of the scheme

1.Real-time video

Dispatchers can remotely turn on the phone‘s side camera and start recording video, sending the video back to the platform in real time. Through this function, the platform can satisfy the fact monitoring of the scene of the incident, and according to the monitoring process through the intercom on-site implementation strategy, the video will become a historical preservation, to meet the need for evidence preservation.

Mobile launch video back: Mobile Launch Video Back Channel members can view the video, and in the scheduling platform can real-time view this video.

The platform requires the mobile phone to initiate video playback: the platform dispatcher can make a user‘s phone start recording video, and in the scheduling platform can view the video.

2.Law enforcement intercom system

In the process of dealing with emergencies need to communicate with the command center, emergency also need to quickly report to the police and upload relevant materials such as audio, video, pictures, etc. , at the same time, the command center needs to supervise the process of dealing with the emergency, to know the working status and location of the rescuers in real time, and to dispatch the emergency in order to control the whole process of dealing with the emergency. In addition, rescue workers also need to carry out real-time communication, in order to facilitate the emergency situation and the surrounding situation of the timely understanding.

3. Flat Command and dispatch based on GIS

Member location, real-time display,

historical track, online query,

one-click Circle selection, Rapid Command

GPS/Beidou/AGPS positioning

1) track playback

At a particular time, due to some events, the dispatcher may need to extract and analyze the trajectory of a user during this time, so that the scenario, the track playback feature addresses this need. After you select the start and end times, the user‘s track is displayed on the map. In the data area, you can also view the component points of the track, each point contains the details of the time, and the reporting time is satellite positioning or base station positioning, as well as the address of the point, at the same time, the point can be viewed on the map.

2) electronic fence

It is mainly used to control the daily work area of the mobile phone users, because the dispatcher can not pay attention to every working user on the screen 24 hours a day, then the electronic fence will become an early warning platform for violation of the rules of the work area. From the perspective of regularity, the electronic fence supports the prohibition of entry and exit.

3) circle the call

To facilitate scheduling, users can circle the map, and then circle the selected area of the online user to call.

4.Multimedia IM

Dispatchers can interact with field workers based on group or peer-to-peer multimedia messaging, including voice, video, text, pictures, and location. Through more interactive forms of rapid remote consultation, and can be used as a basis for later verification.

5. File playback

Select“File playback”, file types are: video files, audio files, stored pictures. Video playback function is divided into server cloud video and PC client computer local video recording two types, and the default use of“Thumbnail” form of display.

6.SOS linkage alarm function

In case of emergency, the SOS button defined on the smart terminal can be operated with one button, and its real-time video and location reported to the command center and sounded the siren. The command center dispatcher will immediately see the video of the law enforcement officer and its exact location. The other members of the same group will also receive the real-time alarm information, and can know the GIS location of the team members, according to the map navigation to the scene for rescue support.

7. Live video forwarding

Through 4G intelligent terminal, the live video of the job site can be viewed by multi-level dispatch station and other mobile terminals, and multi-party teleconference can be established to discuss and issue orders. In the video-live mode, a real-time return video can be switched as the main video source and transmitted to other mobile terminals, which is suitable for video negotiation and cooperative operation.

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In recent years, the concept of integrated communication has been widely mentioned. So, what is integrated communication? What devices or systems can integrated communication integrate?

Modern communication technology has benefited from the emergence of telephone networks, and people have achieved leapfrog communication through telephone. With the emergence of computers and the Internet, people can use the Internet to achieve more diverse communication methods, not limited to voice communication, but also to achieve communication through text, video, location, and other means.

With the continuous development of technology, different specialized devices have emerged for different application scenarios, such as cluster intercom terminals, short wave/ultra short wave radios, video surveillance, broadcasting terminals, and other devices. However, these specialized communication devices often cannot be interconnected due to different communication technologies, and cannot achieve efficient and smooth communication in scenarios involving business linkage.

In this situation, it is hoped to have a fusion communication system that can integrate terminal devices of different communication technologies together, and interconnect devices of different communication technologies to achieve efficient scheduling management.

So what exactly does integrated communication need to integrate? Below, the editor will briefly introduce to you

Introduction to Integrated Communication System

The integrated communication system integrates public network cluster system, private network broadband cluster system, short wave/ultra short wave intercom of different formats and frequency bands, analog/digital cluster system, office telephone system, broadcasting system, clustered individual video, video monitoring system, video conference system, etc., integrating a professional wired/wireless integrated cluster scheduling system. At the same time, it is convenient and flexible to form a network, achieving compatibility with the original system of the customer unit, and a fusion communication solution with multiple means of mutual backup. It can fully utilize various communication tools of different types and networks of on-site personnel to quickly build a temporary command system on site, and can receive command and dispatch from the rear command center through remote access. The system is suitable for public security command, security command, government emergency, fire rescue, military training, emergency rescue and disaster relief, and other occasions.

Simultaneously providing secondary development interfaces for third-party business systems based on B/S and C/S architectures, seamlessly integrating comprehensive scheduling functions such as voice, video, GIS, and data into the business platform to meet the communication and information needs of various industries and achieve the integration of multiple business applications in the industry

Summary of Platform Construction

Huamai Zhilian integrated communication system is a comprehensive command and communication system that adopts SIP communication technology and takes Softswitch as the core to realize multiple communication networks, multiple audio convergence, multiple video convergence and multiple services convergence. Effectively integrating the audio, video, and data related resources already built/under construction by customer units, breaking down information silos between departments, and achieving full connectivity of customer unit information links between multiple levels, networks, and businesses, to meet emergency situations, and assist departments in building a comprehensive communication platform that integrates interconnection, command, and scheduling, achieving efficient command.

Platform construction objectives

Integrated communication and unified command

Integration of multiple communication networks:

The integration of various communication networks such as fixed telephone network, public mobile telephone network PLMN, Internet, multimedia network, cluster communication network, satellite communication network, shortwave, etc

Interconnection among departments:

The prevention and rapid response process of unexpected events is the process of coordinated operations, unified scheduling, and unified command among various departments to minimize accident losses

Integration with video and image systems:

Utilizing the high bandwidth and flexibility of IP networks, live videos, conference videos, and data images are transmitted to the command center, making it “visible” to both the command center and the accident scene

Integration with GIS location information:

The command center can view the geographic information and location of mobile vehicles and personnel in real-time, and can timely understand the situation of rescue vehicles and personnel around emergencies

Platform construction model

System Characteristics

System features high reliability:

1) Main control N+1 hot standby

The main control module and main resource module support N+1 hot standby and remote hot standby.

2) Relay redundant backup

The system supports digital relay, analog relay, SIP relay, and wireless relay.

3) Intelligent routing

In terms of routing design, backup routing is supported.

Strong networking capability: integrating various communication networks

1) Private network

Satellite communication, shortwave/ultra shortwave, wireless trunking, broadcasting systems, etc

2) Public network

PSTN/2G/3G/4G/LTE

3) Emergency command and communication network

Wireless broadband, satellite communication, wireless private network, etc

Perfect access capability:

System platform networking type

Interconnection with PSTN/PBX

IP relay

Interconnection and interworking with cluster systems

Interconnection and interworking with shortwave/ultra shortwave systems

Access to public address system

Broadband Cluster Access Based on 3G/LTE

Video monitoring system access

major function

1.Voice command and scheduling function

1) Forced dismantling, forced insertion, conference, monitoring

2) Receiving, transferring, recording, and group calling

3) Intercom, emergency call, hotline, broadcast

4) Group management, call queue, hierarchical management, night service

2. Video command and scheduling function

Integration: Comprehensive implementation of functions such as video and audio command and scheduling, video monitoring, video conferencing, and visual intercom

Compatibility: Supports access to multiple video surveillance systems;

Grading: Video command scheduling with multiple levels and permissions

3. Location service function

1) Geographic Information Display

2) Track recording and playback

3) GPSA based video viewing

4) Based on GIS cluster intercom

4. Linkage functions of other business systems

1) Interconnection with emergency response system

2) Interconnection with perimeter alarm system

3) Interconnection with fire alarm system

4) Interconnection with DCS system

5) Interconnection with fire alarm system

6) Interconnection with intelligent security systems

7) Business Development Interface

Industry applications

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The emergency command and dispatch system is an important component of emergency management, and the command center is the control center of the emergency command system. It can be said that it is the brain in the emergency command and dispatch system system. All emergency commands in emergency management are issued from the command center. As the control center of the emergency command system, what functions does the emergency command and dispatch system generally need to have and what equipment systems are composed of?

Pttlink has rich implementation experience in the field of emergency communication and has implemented emergency command and communication projects in many industries. It has a profound understanding of the composition of emergency command center products. Taking the command center product of Huamai Zhilian Emergency Command and Dispatch System as an example, this article explores what system equipment is generally required to establish a professional emergency command center.

Integrated communication system

The Huamai Zhilian PTTLINK integrated communication system provides various scheduling and communication capabilities, including voice scheduling, video scheduling, video monitoring access, IM scheduling, GIS scheduling, incoming call scheduling, collaborative management, etc. It supports broadband and narrowband wireless cluster interconnection and meets the needs of emergency command center‘s multi network integration and business connectivity.

The system highly integrates audio, video, and data to build a command and dispatch mode that combines peacetime and wartime. It not only meets the needs of daily office work, meetings, emergency training, and emergency drills, but also meets the requirements of emergency command, rescue, and decision-making during wartime, achieving the goal of unified command and joint action, providing effective support for users‘ daily management and emergency response, Maximize the efficiency of emergency response.

PTTLINK integrated communication system provides various scheduling and communication capabilities, including voice scheduling, video scheduling, video monitoring access, IM scheduling, GIS scheduling, incoming call scheduling, collaborative management, etc. It supports broadband and narrowband wireless cluster interconnection and meets the needs of emergency command center‘s multi network integration and business connectivity.

The system highly integrates audio, video, and data to build a command and dispatch mode that combines peacetime and wartime. It not only meets the needs of daily office work, meetings, emergency training, and emergency drills, but also meets the requirements of emergency command, rescue, and decision-making during wartime, achieving the goal of unified command and joint action, providing effective support for users‘ daily management and emergency response, Maximize the efficiency of emergency response.

Video conference systemThe video conference system is an important communication and collaboration platform for emergency command. The Huamai Zhilian PTTLINK integrated communication video conference system has rich audio and video conference capabilities, simple meeting methods, and diverse meeting methods. The large screen has multi screen video functions, supporting rich multi screen functions: supporting 2, 3, 4, 1+5, 1+7, 9, 2+8, 1+12, 16, and multiple split screen modes of picture in picture.

With convenient meeting management functions, it can establish fixed and temporary meeting groups, which can improve the efficiency of meeting establishment; Provide a default meeting mechanism that supports video distribution, screenshots, recording, and recording functions.

Multimedia recording system

In the process of emergency response, the command center needs to have a well documented record of every action of the entire event, and detailed communication records of all members‘ audio and video are required. Such a professional multimedia recording system is essential.

The Huamai Zhilian PTTLINK integrated communication system has a self-developed multimedia recording system that can record audio and video during the emergency command process, and record all communication content and scheduling instructions in real-time, allowing the emergency command center to have drama to check and evidence to rely on at all times.

Streaming Media Service Platform

Video is widely used in various industries, and many terminal devices are connected during emergency command, involving various video streams such as surveillance cameras, deployment balls, drones, videophones, alarms, intelligent soldiers, law enforcement instruments, flashlights, safety helmets, etc. Many video terminal devices need to be integrated with the command center. When the command and dispatch center issues commands to subordinate users, It is necessary to have the ability to cross platform video live streaming, watch and view, and integrate interaction.

The Huamai Zhilian PTTLINK integrated communication system has strong streaming capabilities. The Huamai Zhilian streaming service platform supports multiple streaming protocols for push and pull services. The command center can distribute and output protocol videos such as SIP/GB28181/RTMP/RTSP/WebRTC through the transmission network, and collaborate with the integrated communication system and command scheduling system to facilitate the emergency command center to view videos from different video terminals on the access layer at any time.

Command and dispatch console

The command and dispatch console is an important component of the construction of the emergency command center, serving as the control center of the command center. The commands of the command center need to be issued through the dispatch console, and various emergency situations on the emergency site are also presented to the command center through the dispatch console.

For different emergency communication scenarios, Huamai Zhilian can be described as a command center equipped with different types of dispatch consoles, such as desktop dispatch consoles, convenient three screen dispatch consoles, agile dispatch consoles, mobile dispatch consoles, etc., to meet the different dispatch and communication needs of the command center.

Integrated Access Gateway

With the development of communication technology, audio and video terminal devices of different communication standards are connected to the emergency communication system through a comprehensive access gateway, and the emergency command center can more conveniently achieve cross standard and cross system communication.

The Huamai Zhilian PTTLINK integrated communication system meets the requirements of integrated gateway access in various environments, such as telephone gateway, cluster intercom access gateway, SMS gateway, broadcasting gateway, video monitoring gateway, etc. Through the gateway, it solves the integrated communication between different terminals across platforms and meets the needs of emergency command center integrated communication.

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