WiFi long-distance real-time image transmission module metal mining area/tunnel transmission, rare metal mining areas in remote mountainous areas need installation and monitoring to ensure the safety of personnel and equipment and property. Due to the complex on-site environment and many machines, it is realized wirelessly by using WiFi long-distance real-time image transmission module. 6 monitoring points are installed on site, 5 kilometers away from the control center.
The principle of wireless transmission is unobstructed transmission, which requires elevated transmitting and receiving equipment, or selection of commanding heights and relays. Although the entire mining area is a large-area open area, there are many machines and temporary housing sheds in the mining area. There are 6 monitoring points of WiFi long-distance real-time image transmission module scattered in each corner of the mining area, which cannot visualize each monitoring point and monitoring center. Therefore, we decided to choose a vantage point as a relay. After the relay point erects the wireless transmission equipment, 6 wireless signals are transmitted back to the monitoring center through the equipment.
WiFi long-distance real-time image transmission module tunnel construction wireless transmission scheme, the overall tunnel construction wireless transmission system consists of three parts.
1. Front-end monitoring data collection part;
2. Mid-end wireless transmission part;
3. Back-end data storage and control part;
A complete wireless transmission system consists of the above three parts.
Wireless Transmission System for Tunnel Construction
Front-end data collection part:
According to the actual requirements of the site, the total length of the tunnel is 1.5 kilometers, there are two construction vehicles, each construction vehicle is equipped with two network cameras, two network cameras are installed at the tunnel entrances at both ends, and the left tunnel entrance is the monitoring center, where network bolts and network balls are installed. machine. The whole monitoring system has 8 monitoring points, which are composed of 7 network bolts and 1 network ball machine.
Wireless transmission part:
Wireless transmission is mainly composed of wireless transmission equipment, which is realized by industrial-grade digital wireless. The digital wireless bridge is a long-range outdoor wireless bridge with high cost performance. The WiFi long-distance real-time image transmission module works in the 2.4GHz frequency band, adopts 2×2MIMO technology, and has a high bandwidth of up to 300Mbps. Since the tunnel is not a straight line, the transmitter and receiver are visually unobstructed, so it is decided to set up a relay point at the turn of the tunnel to realize wireless transmission in the form of relay relay. The two high-definition network cameras at the entrance of the right tunnel are connected to the digital wireless transmission device as the transmitter through the switch, and the relay point of the WiFi long-distance real-time image transmission module uses the digital wireless bridge as the receiver. The cameras of the two engineering vehicles are integrated by network cables. . The two receivers at the relay point aggregate the signal, connect to the switch, and use digital wireless transmission equipment.
Back-end data storage and control part:
The monitoring center is the signal control and data exchange center of the entire wireless transmission system, with the most comprehensive system functions, which are briefly expressed as follows:
1. Display multiple video information at the same time for real-time monitoring.
2. You can set the recording speed and time of any image.
3. Multi-mode video management can be performed on images of any important monitoring point.
4. It can control the front-end PTZ and dome camera, so as to choose the best monitoring angle and distance.
5. Support Internet IP access, support mobile client access, and realize remote wireless transmission.
The equipment in monitoring is composed of NVR and display, the wireless receiver connects the multi-channel images received through the switch and enters the NVR, and then the NVR displays all the images on the display to meet the requirements of real-time viewing. According to the storage requirements, a large-capacity hard disk that meets the actual situation can be selected. There will be NVR connected to the Internet to realize viewing and remote real-time monitoring of mobile clients.
