15km lr remote wifi networking module pail video wireless transmission, with the rapid development of the national economy, all walks of life more and more demand for power, the power supply department of the quality (stability) of the power supply, uninterrupted and accompanying service requirements are also increasingly high, so the safety of the remote high-voltage transmission lines of the grid operation is particularly important. At present, the main factors affecting the operation safety of HV transmission lines are as follows:
1. The base is damaged by human force, which seriously affects the safety of transmission lines. In recent years, with the increase in metal materials, criminals have stolen a large amount of power tower materials. Cables and other devices may collapse the base and interrupt the transmission, seriously affecting the safety of the transmission line.
2. The severe ice storm seriously affected the power transmission security. The ice disaster at the end of 2007 brought new awareness of the dangers of ice cover. The heavy ice cover caused the wires to break. The collapse of the tower seriously affected the safety of the transmission line.
3. Construction site tower crane. Vehicles and other equipment crossing urban overhead lines, seriously affect the harm of urban overhead lines. With the rapid development of economy, there are more and more construction sites in cities, tower cranes. Vehicles and other ultra-high equipment through urban overhead lines directly lead to wire cutting, high voltage will also lead to the destruction of vehicles, seriously affecting the safety of transmission lines.
4. High tree growth pressure line in forest area seriously affects transmission line safety; As the trees in the forest area grow, they grow taller and often get crushed against the wires that pass through the forest area, causing the wires to break or short-circuit, seriously affecting the safety of the transmission lines.
5. Remote mountainous areas. The difficult artificial line inspection in forest areas is also a factor affecting the safety of power transmission and transformation lines; Regular patrol is an important means to ensure the safety of transmission lines, but through remote mountainous areas. It is very difficult to manually patrol the lines in the forest area. It is impossible to determine whether the transmission lines have security risks, which will seriously affect the safety of the transmission lines.
6. Dig around the base. The destruction of the foundation by excavators is also a factor affecting the safety of transmission lines. There is often sand around the base. Earthmoving conditions, once close to the foundation, may affect the stability of the tower and also seriously affect the safety of the transmission line.
1. Design principles of power wireless transmission system for 15km lr long-distance wifi networking module
1) The principle of advanced sex
The use of advanced design concept, the selection of advanced network equipment, so that the network application in the future in a certain period of time to maintain advanced technology.
2) Openness principle
The design of the network and the selection of the network equipment conform to the international and industrial standards, so that the network has a high degree of openness and technical compatibility.
3) Extensibility principle
While fully considering the current situation, the design of the 15km lr long-distance wifi networking module must consider the needs of long-term business development in the future, with the possibility of upgrading and expansion. Make full use of the existing communication microwave resources to provide enough space for future expansion to higher speeds. On the other hand, we must also leave enough room for the expansion of the network scale.
4) Security principles
The design of network system must implement the security principle to prevent all kinds of damage inside and outside the network. The implementation of security principles is reflected in the following aspects:
1. Reliability principle
The design of network system must carry out the principle of reliability to make the network system have high availability.
2. Management principles
The network system should have good manageability. The 15km lr long-distance wifi networking module enables the network management personnel to easily and timely grasp the network topology, network performance statistics, network faults and other information, and can simply configure and adjust the network to ensure that the network works in good condition.
Ii. Current situation and demand analysis
The tower is located in a sparsely populated mountainous area, and most public network communication signals cannot be covered. In the face of natural disasters, it is necessary to provide the tower with a dedicated and reliable 15km lr long-distance wifi networking module wireless transmission network. To provide video support for the prevention of natural disasters and man-made damage.
Iii. Construction scheme of 15km lr long-distance wifi networking module system
The site is divided into two towers, A and B, with a distance of 4km and 8km respectively. The two towers adopt point-to-point transmission, and each tower adopts Hikang HD ball machine and 15km lr long-distance wifi networking module for wireless transmission.
Iv. Wireless transmission of 2.4/5.8G industrial-grade 15km lr long-range wifi networking module
High power outdoor wireless module, with the Ministry of Industry and Information Technology certified radio transmission equipment type approval certificate. The device is designed for harsh environment, provides circuit board level waterproof standard, built-in 29dBi antenna, transmission bandwidth of 10km can be stable at 99Mbps (network port 100Mbps, industrial design).
The 15km lr long-distance wifi networking module supports base station mode, point-to-point bridge mode and user-station mode. The cooperation between different modes can achieve different effects, such as point-to-point transmission, point-to-point transmission and automatic roaming switch transmission. It supports both Chinese and English interfaces and is easy to operate. The cumbersome operation mode is eliminated, making debugging faster and easier, facilitating rapid deployment, and suitable for the quick start of engineers and technicians. When there is no mains power in the field, it can be flexibly combined with batteries, solar energy, wind power and other power supply methods.
Features of 15km lr long-distance wifi networking module:
1, strong anti-interference ability: the software detects the field RF signal and enough frequency resources to improve the anti-interference ability, has better performance in the complex electromagnetic environment.
2. Support base station mode/user station mode/bridge mode/roaming mode.
3. Fast roaming switch function: Realize the fast roaming switch function of one mobile client and multiple fixed base stations.
4, stable transmission rate: support point to point. Point-to-multipoint transmission with a stable transmission rate of 100Mbps.
5, English interface operation: Support.
6, support wireless signal scanning: support tools to scan the surrounding frequency points, convenient for engineers debugging and installation.
7, power adjustable: transmission power adjustable, up to 27dBm.
8. It is convenient to use flexibly in different working environments.
9. Support the coordinate position manual positioning function: guests can input the real-time coordinate position of the device.
10, support online map display function: can display the different positions and connection status of online devices.
11. Wide voltage operation: DC12-24VPOE power supply is supported.
12. Customized development: Support product appearance customized development, customized according to different use environment, to meet user needs.
