High-speed long-distance wifi module subway monitoring/highway dedicated wireless transmission. With the extension of subway lines and the intersection of multiple lines, subway wireless transmission needs to be continuously expanded, so there are requirements for the technical openness of the monitoring system. Party A will strictly control the construction cost of the system. The application of subway monitoring has high requirements for image quality, image delay and system reliability. No matter how big the system is, any image decoding delay must be within 10ms. Any image scheduling time on the wall of the station and monitoring center and any image scheduling time of the dispatching PC terminal should be less than 50ms. IP using high-definition monitoring system H.264MainProfile above the level of image coding technology is an ideal choice for high-definition metro operation schemes, such as good quality, low delay, low investment, simple expansion, low cost, good versatility, etc.
I. Subway monitoring analysis
Hd wireless transmission is not only an HD camera, but a complete system wireless transmission solution. The planning and construction of the wireless transmission system of high-definition high-speed long-distance wifi module in the subway need to choose the solution according to the construction characteristics and business requirements of the subway. First, consider the characteristics of the subway industry, clarify the requirements for monitoring service quality, the scale of system construction, whether continuous expansion is supported, whether comprehensive construction costs need to be controlled, and whether the reliability of the service system will not be reduced under large-scale deployment.
Ii. Customer on-site analysis
According to the actual analysis of the field situation, five cameras need to be arranged in the subway. The distance of high-speed and long-distance wifi module is about 2KM, but there are four high-definition monitoring cameras in the front end which cannot achieve vision from the monitoring center, and there are eight bends in the middle. In order to complete the monitoring purpose, we adopt digital microwave transmission in the eight bends, which can not only complete the field functions. The transmission process can also be encrypted to meet certain confidentiality requirements.
Three, wireless transmission solutions
The three HD balls at the front end are connected to the three wireless transmissions and transmitted to the relay point, which are received by the high-speed long-distance wifi module and enter the switch. The HD ball machine at the relay point is connected to the switch and transmitted by the wireless transmission device. Another HD camera is transmitted by the wireless transmission device.
At present, there are two main wireless transmission solutions of IP digital bridge in the wireless transmission system of subway high-speed and long-distance wifi module: IP streaming media monitoring network scheme IP all-switched digital monitoring scheme. If you need wireless transmission, please contact our official customer service, we will provide professional wireless transmission solutions.
Highway tunnel engineering wireless video monitoring solution, 4G/5G wireless transmission equipment can bring intuitive and convenient visual effects to the construction units or institutions. Widely used in forestry, water conservancy, oil field, bus, mountain areas and other important places wireless video monitoring. You can sit in your office and see live images of important events in your organization. You can also leave the office to deal with various on-site emergencies, monitor the process, and see the effect of the on-site images.
First, wireless video surveillance technology introduction
5G wireless equipment based on 5G network processing, through 5G through the network to achieve signal transmission, control, video storage and on-demand playback. As long as you have an Internet connection, you can watch it on your mobile phone or computer, without the restrictions of distance or blocking. For the user, it is very simple and convenient.
Ii. Customer on-site analysis
Wireless transmission was carried out in a farmland in Hubei Province. The farmland plans to set up more than 160 monitoring points, each with a ball machine. The transmission distance is 10 KM, there are obstacles in the transmission process, the on-site transmission to the back end, as long as there is a network, the monitoring room can watch anywhere.
Three, wireless transmission solutions
This high-speed and long-distance wifi module wireless transmission scheme uses the camera image signal 5G to achieve device transmission. 5G devices are transmitted through the 5G network without any distance or blocking restrictions, with strong stability and clear and stable images. Each front camera is connected with three 5G devices, and a 5G card and hard disk are inserted to enable transmission and storage. The control room can be viewed anywhere as long as the back end has a network, and the rotation of the front ball machine can be controlled by software in the control room.
The advantages of wireless transmission in tunnel are introduced in detail. With the rapid development of science and technology, high-tech secure communication means are used to prevent and stop various possible events. With the rapid development of computer network communication technology, image compression processing technology and wireless transmission technology, the security technology defense industry can adopt the latest communication and image/voice processing technology, through the construction of flexible network transmission of digital image and control image, for the realization of local and remote image monitoring and network alarm system provides efficient, feasible and cheap solutions.
First, high-speed remote wifi module wireless video surveillance advantages
(1) Easy installation and construction, the use of wireless network, avoid or reduce the workload of network wiring, do not destroy the original environmental facilities, with short construction cycle, high cost effectiveness.
(2) To achieve fast coverage, the video codec is responsible for converting the analog wireless video surveillance signals of the camera into digital signals, and at the same time compressing and transmitting the control signals. The video codec has a built-in 10/100M network adapter connected to the wireless transmission device through a network cable. The encoded and compressed monitoring information is collected by the wireless network to the traffic monitoring management center. The monitoring center can see the roads and intersections it controls. Monitoring personnel can remotely browse video images in real time through the local area network or Internet monitoring center, remote control the head. In order to fully ensure the bandwidth of each monitoring point, the bandwidth of each monitoring point is adopted. MPEG4 coding standard, low bandwidth occupation, can achieve high-quality image transmission and storage, long transmission distance, suitable for wireless transmission in the vast area of the city.
Ii. Customer on-site analysis
In the 500-meter tunnel construction site, a camera is installed every 50 meters to 80 meters, and a camera is installed on the engineering construction vehicle. There are 8 monitoring points, from the monitoring point to the monitoring center, the back end enters the computer for real-time viewing, and the front end uses an analog camera.
Three, wireless transmission solutions
High-speed remote wifi module is used to simulate the ball machine at 7 o 'clock in the front end. The built-in editing module is used to connect the transmitting device. The digital wireless video monitoring device is used at the back end. The mobile car uses an analog camera to connect to a one-way video server. After the external omnidirectional antenna high-speed long-distance wifi module is launched, the three back-end wireless video receivers enter the network switch and access the computer. The computer installed the corresponding control software to control the image switching and the ball machine rotation.
