Fire and disaster relief command and communication ad hoc network solution
overview
Coal mine underground operations are prone to safety accidents due to the harsh environment due to deep underground. When encountering an emergency, traditional means of communication cannot transmit various messages in a timely and effective manner.
Background description
On April 10, 2021, a major water penetration accident occurred in the Baiyanggou Fengyuan Coal Mine in Hutubi County, Changji Prefecture, Xinjiang, resulting in 21 deaths and direct economic losses of 70.672 million yuan. Causes: Fengyuan Coal Mine violated the rules and regulations to command and risk organizing tunneling operations, under the pressure of water accumulation in the adjacent coal mine and the disturbance of tunneling, the old empty water of the adjacent coal mine collapsed into the return air trough of Fengyuan Coal Mine, resulting in a major permeable flooding accident.
Analysis of the current situation
Due to the high risk factor of coal mine operations and the frequent safety accidents, they have caused huge economic losses and adverse political impact to the country. Therefore, as early as in the "13th Five-Year Plan", China clearly proposed to increase the innovation and transformation of the coal mining industry, improve the level of prevention and control of coal mine disasters, effectively protect people's life safety and property safety, promote the healthy development of the coal mining industry, and improve the efficiency and safety of mine operations. As a result, the requirements for coal mine safety production have once again been raised to a new height, especially the safety of mine operations has been highly valued by the state. Among them, emergency communication support is one of the most important contents.
Wanlan ANYMESH ad hoc network radio can quickly deploy at the disaster site, quickly build a command and communication network, and provide real-time information for disaster relief command, so that the command can quickly understand and grasp the disaster and loss situation, reasonably deploy disaster relief resources, formulate disaster relief plans, unify the command of the joint work of various disaster relief units, and take effective measures to quickly carry out disaster relief operations to minimize disaster losses.
Scenario introduction
The city, county (district) emergency management department needs to quickly rush to the scene to set up a rescue communication link in the event of a mine accident, and the rescuers need to realize voice and video communication between personnel through the link, and the command center and the on-site command vehicle can also command the rescue work in real time through the wireless link. Solve the problem of emergency rescue command and communication in various extreme situations.
ANYMESH ad hoc network radio has good radio communication ability, and can quickly form a centerless network through the free networking between ANYMESH ad hoc network radio stations without relying on the public network. This system is composed of ANYMESH handheld radio, ANYMESH knapsack radio, ANYMESH vehicle-mounted radio, ANYMESH airborne radio and ANYMESH ad hoc network base station equipment and integrated emergency command information platform, which can build a broadband self-organizing communication network with wide area coverage, flexible and mobile, and supports multi-service types. The location, status and other information of all connected nodes are summarized in real time to the back-end network management system for unified scheduling, management, and control.
solution
The maximum point-to-point communication distance of the limit coverage of the ANYMESH ad hoc network radio is 160 kilometers, and the maximum system bandwidth is 100M, which realizes the real-time processing capability of voice, video, image, message, positioning and other information, and realizes horizontal integration and communication with the existing digital ultra-short wave and satellite communication.
The scheme design is as follows:
As shown in the figure above, the design of the entire consumer rescue command and communication scheme is divided into three parts.
The portable node part of the ad hoc network: the intelligent terminal of the front-end ground detector personnel is connected with the ANYMESH ad hoc network individual soldier carrying node device through WiFi, and the individual soldier nodes of the ad hoc network can communicate with each other through mesh
Emergency communication command vehicle node part: install an ANYMESH ad hoc network vehicle node equipment on the emergency communication command vehicle 20 kilometers away from the front-end detection personnel at a distance, and the ad hoc network vehicle node equipment builds a wireless communication network with the ad hoc network airborne node equipment on the UAV through a wireless MESH link
The main command center part: the emergency communication vehicle can build a communication link with the command center through 4G/5G and nearby communication base stations or through satellite signals.
Equipment introduction
Ad hoc network handheld
Product name | ANYMESH-SDR-A1(1W) Single-soldier Handheld Frequency Hopping Ad Hoc Network Radio |
Category | Ad hoc network handheld |
Product model | ANYMESH-SDR-A1（1W） |
Product Introduction | ANYMESH-SDR-A1(1W) Individual Frequency Hopping Radio The individual soldier handheld frequency hopping ad hoc network radio station, the transmission frequency range is 70M to 6G can be customized, using Wanlan Communication's new generation of multi-hop ad hoc network protocol radio technology, with frequency hopping anti-interference ability, used in the military field to fight complex channel environment, to achieve the completion of individual soldiers, vehicles, UAVs and other maneuvering points, fixed points between the centerless same frequency ad hoc network broadband service transmission in complex scenarios. The built-in lithium battery has a maximum transmission power of 0.5W, which can meet the needs of users to quickly establish a private network in emergency scenarios and provide a stable transmission channel for users' voice, message, video and other IP data services. |
The individual handheld frequency hopping ad hoc network radio, the transmission frequency range is 70M to 6G can be customized, using the radio technology of Wanlan Communication's new generation of multi-hop ad hoc network protocol, with the ability of frequency hopping and anti-interference, used in the military field to fight against complex channel environments, and realize the completion of centerless co-frequency ad hoc network broadband service transmission between individual soldiers, vehicles, UAVs and other maneuvering points and fixed points in complex scenarios.
The built-in lithium battery has a maximum transmission power of 2* 0.5W, which can meet the user's ability to quickly establish a private network in emergency scenarios and provide a stable transmission channel for the user's voice, message, video and other IP data services.
The product has the characteristics of software defined radio, which is very suitable for military and firefighting fields, and is also suitable for moving vehicles and ship equipment, so as to realize uninterrupted communication between vehicles and vehicles. In addition, the product can also meet the needs of private network wireless communication in closed scenarios such as mines, tunnels and basements. It can realize point-to-point or point-to-multi-point two-way wireless video, voice and data transmission, and is widely used in smart cities, individual soldiers, public security and armed police, fire rescue, emergency fleet communications, civil air defense border defense, unmanned ships at sea, special robots and other fields.
The ANYMESH-SDR-A1 individual handheld self-organizing network device is delicate in shape and light in weight, only 980g, which is easy to carry by hand or hung on the waist, shoulder and back. It can provide an efficient digital converged communication network for emergency tasks such as public security law enforcement, fire rescue, and special operations. The start-up status of the product can be controlled in seconds, and it has the characteristics of automatic chain building and automatic search. It provides multimedia interactive services such as voice group call, video backhaul, GIS positioning, and personnel perception for emergency command. At the same time, the communication range of individual handheld stations can be expanded through the UAV link, and a two-way communication link between the emergency scene and the on-site command center can be established.
Wireless features | Communication frequency | Commonly used 320-470M/500-650M/1.2-1.5GHz optional, 1MHz step adjustable [70~6000hz can be customized] |
Channel bandwidth | 2.5/5/10/20*MHz [20MHz version can be customized] |
Transmit power | Dual-channel, 500mW*2 and 2W*2 versions are available, and the 1dBm steps are adjustable |
Communication waveforms | TDD-COFDM + MIMO (Dual Transmitter and
Dual Receiver) |
Carrier modulation | BPSK/QPSK/16QAM/64QAM/256QAM (Adaptive) |
Reception sensitive | -103dBm@2.5MHz |
Communication distance | Up to 30km (ground-to-air line-of-sight), 10km (ground-to-ground line-of-sight) |
Communication rate | Peak 65Mbps@10MHz 【Peak 125Mbps@20MHz customizable】 |
Transmit power | Dual-channel, 30dBm max (1W) with adjustable 1dBm steps |
Networking function | Networking capabilities | Single-frequency supports more than 64 nodes |
Number of hops on the network | The maximum is not less than 32 jumps |
Access time | The system is connected to the network within 1 second after startup |
Network topology | No central network, star network, chain network, grid format, etc. |
Transparent network transmission | Support network IP transparent transmission function |
System features | Peripheral interfaces | 3TCP/IP protocol, RJ45 network port, RS232 serial port [customizable multi-network port, RS232, RS422, RS485, etc.] |
Video ingestion | Support IP video input |
Video Extensions | Video Encoder HDMI/SDI/CVBS (**customized on request) |
Control functions | Support unified software management configuration [support configuration management software customization] |
Voice Communications | Full-duplex VOIP voice conferencing/PTT hand-to-hand intercom |
Satellite positioning | GPS/BD |
The rest of the features | WiFi AP |
Physical characteristics | Power consumption of the whole machine | 6~12W |
working hours | 6~8 hours (integrated removable battery) |
Operating temperature | -40℃~65℃ |
Ingress protection | IP65 |
Exterior dimensions | 78*45*216mm（L*W*H） |
The weight of the whole machine | 980g |
Ad hoc network vehicle piggyback station
Product name | ANYMESH-SDR-A2 (10W) MIMO THIN AND LIGHT 1W AIRBORNE AD HOC NETWORK MODULE |
Category | Ad hoc network vehicle piggyback station |
Product model | ANYMESH-SDR-A2（10W） |
Product Introduction | The ANYMESH-SDR-A2 is a base station-type ad hoc network device that can be carried behind you to reduce extra weight or be fixed as a relay base station. The chain can be automatically built and networked after powering on the computer, and no additional configuration work is required. Each piggyback base station node does not need to forward data information through the central node, and all nodes can be used as data information collection node, relay forwarding node and data information output node at the same time. The networking mode dynamically changes with the environment to meet the requirements of multi-scenario applications. The transmission distance of the equipment can reach more than 50KM in an unobstructed environment, and it is effectively used in various severe environmental fields |
The vehicle-mounted ad hoc network radio, with a transmission frequency range of 320M to 1.5G, can be customized, adopts the radio technology of Wanlan Communication's new generation of multi-hop ad hoc network protocol, has the ability to resist complex channel environments, and realizes the centerless same-frequency ad hoc network broadband service transmission between individual soldiers, vehicles, UAVs and other maneuvering points and fixed points in complex scenarios.
The device itself has a built-in large-capacity lithium battery, compact design, and a single-channel 2*5W and dual-channel 10W transmission power, which can meet the user's ability to quickly establish a private network in emergency scenarios and provide a stable transmission channel for the user's voice, message, video and other IP data services.
The product has the characteristics of software defined radio, which is very suitable for military and firefighting fields, and is also suitable for moving vehicles and ship equipment, so as to realize uninterrupted communication between vehicles and vehicles. In addition, the product can also meet the needs of private network wireless communication in closed scenarios such as mines, tunnels and basements. It can realize point-to-point or point-to-multi-point two-way wireless video, voice and data transmission, and is widely used in smart cities, individual soldiers, public security and armed police, fire rescue, emergency fleet communications, civil air defense border defense, unmanned ships at sea, special robots and other fields.
Wireless features | Network scale | Up to 64 nodes per frequency |
Communication frequency | Commonly used 320-470M/500-650M/1.2-1.5GHz optional, 1MHz step adjustable, with customization ability [70~6000MHz range can be customized] |
Transmit power | 2*5W【Optional 2*2W/2*10W】 |
Bandwidth mode | 2.5 / 5 / 10 / 20*MHz |
Communication waveforms | TDD-COFDM + MIMO (Dual Transmitter and Dual Receiver) |
Carrier modulation | BPSK/QPSK/16QAM/64QAM/256QAM |
Sensitive to acceptance | Up to -103dBm |
Communication distance | Up to 100km or more (air/air-to-ground line-of-sight) [160km/200km] |
Networking function | Communication rate | The peak 66Mbps@10MHz, the peak 125Mbps@20MHz [20M is a customized version]. |
Transmission delay | The average single hop is 7ms |
Multi-hop capability | Short messages can have up to 31 hops, voice messages can jump up to 15 hops, and video messages can have more than 10 hops |
Movement speed | Support 1000+ km/h high-speed movement |
Voice Communications | PTT hand microphone intercom |
System features | Start-up time | 30 seconds |
Entry time | Less than 1 second |
Data interface | Network port*2, serial port*2, voice*1 |
Network expansion | WIFI AP |
Video ingestion | IP video |
Satellite positioning | GPS/BD (External on Demand) |
Ingress protection | IP65 |
Power supply requirements | 28~36V/2A |
Power consumption of the whole machine | 25~40W, dual channel |
working hours | 6~8h (integrated removable battery) |
Operating temperature | -30~+55℃ |
Exterior dimensions | 282*176*61mm |
The weight of the whole machine | 3500g/4200g |
Three-screen portable emergency command box
Product name | MESH Ad Hoc Network Portable Emergency Command Box |
Category | Three-screen portable command box |
Product model | ANYMESH-SDR-A6 |
Product Introduction | MESH Ad Hoc Network Portable Emergency Command Box Ad Hoc Network Three-screen Dispatching Console In aerospace, coal mine, energy and military industry, public security, government and enterprise, emergency rescue, field operation and command and dispatch and other industries, computers are required to collect and process data on site, and sometimes face huge computing and high-definition split-screen display viewing and processing, as well as the uncertainty of the work location, and also require strong outdoor endurance. Ordinary laptops don't have dustproof, drop-proof, and high-intensity handling. |
MESH Ad Hoc Network Portable Emergency Command Box Ad Hoc Network Three-screen Dispatching Console In aerospace, coal mine, energy and military industry, public security, government and enterprise, emergency rescue, field operation and command and dispatch and other industries, computers are required to collect and process data on site, and sometimes face huge computing and high-definition split-screen display viewing and processing, as well as the uncertainty of the work location, and also require strong outdoor endurance. Ordinary laptops don't have dustproof, drop-proof, and high-intensity handling.
Wireless features | Network scale | A maximum of 32 nodes can be supported for a single frequency |
Communication frequency | Commonly used 560~600/1415~1465MHz, 5MHz step adjustable [customizable frequency band within 70M to 6GHz] |
Transmit power | Conventional 2W [Maximum built-in optional 10W module] |
Bandwidth mode | 5/10/20/40MHz |
Communication waveforms | TDD-OFDM+CSMA/CA |
Carrier modulation | BPSK/QPSK/16QAM/64QAM (Adaptive) |
Reception sensitive | -98dBm@5MHz【High-end optional -103dBm】 |
Communication distance | 30+km (ground-to-air/air-to-air), 10+km (ground-to-ground) |
Networking capabilities | Communication rate | 80Mbps peak (adaptive) |
Transmission delay | A single hop is about 2ms |
Multi-hop capability | Short messages can reach 20 hops, voice can reach 15 hops, and video can reach more than 8 hops [Chained networking] |
Movement speed | Support 320+km/h high-speed movement [up to Mach 3] |
Start-up time | About 32 seconds |
System features | Access time | Less than 1 second [Route switching less than 1 second] |
Data interface | RJ45 network port*1, RS232 serial port*2, HDMI*1 [Encoding H.265 compatible with 264] |
Video Extensions | Support HD camera and wireless camera input |
Network expansion | 4G module, WIFI AP wireless hotspot, satellite link |
Satellite positioning | GPS/BD |
Computer characteristics | mainboard | Embedded industrial motherboards |
CPU | 6th/7th Gen Core i7-6700T/i7-7700T【Adaptable to the latest CPU】 |
memory | Dual-channel DDR4 (2*8G) 2133MHz memory slot [up to 32G] |
disk drive | 500G SSD/1T HDD [configurable according to demand] |
Battery capacity | 16.8V/16AH lithium battery [optional DC-19V large capacity lithium battery] |
Power consumption of the whole machine | 8~20W |
working hours | 2~4h (can be equipped with outdoor emergency power supply) [AC90~264V@50~60Hz] |
On-screen display | 17.3 inch LED screen*3,1920*1080,300cd/m【Viewing angle 178/170(H/V)】 |
Operating temperature | -40~+65°C (Humidity 10%~90 non-condensing) |
Vibration test | 0.4Grms (10~500Hz) [Optional 1.12Grms (10~500Hz)] |
Exterior dimensions | 429*318*109（mm） |
The weight of the whole machine | 9kg (without trolley case) |
Summary of the program
The image, video, and voice data captured by the intelligent terminal equipment can be transmitted to the ad hoc network individual soldier equipment through WiFi, and then the video is transmitted back to the front-line command center through the communication network built by the ad hoc network individual soldier equipment and the ad hoc network carrying node equipment. After that, the image is transmitted back to the emergency communication vehicle (ad hoc network vehicle node) through the ad hoc network carrying device, and the personnel in the vehicle can watch the video through the video client software and command the front-end operators, and the emergency communication vehicle can also transmit data to the nearby tower through 4G/5G, and the video is transmitted to the back-end general command center through the operator network in the tower. When there is no 4G/5G signal in the vicinity of the vehicle, the data can also be transmitted back via satellite.
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