Tunnel wireless communication module tunnel wireless transmission scheme
1. Industry background
In the context of strengthening the construction of basic transportation across the country, the development of high-speed railways and expressways has been accelerated, and more and more railway lines and highway lines have been built one after another. In the development of road construction, complex geographical environments such as mountains and hills are bound to be encountered. Tunnel excavation is a frequently encountered problem in the construction of railways and highways in the above-mentioned areas. As the most direct and commonly used transportation scheme, the tunnel construction scheme can effectively exert the characteristics of shortening the mileage, improving the linearity standard, ensuring the operation safety and protecting the ecological environment. In fact, tunnel construction is a arduous and high-risk project. How to improve the quality and speed of tunnel excavation with high efficiency on the premise of ensuring construction safety, more and more construction units have established monitoring systems to reduce and To ensure engineering safety, especially in the past two years, the rapid application of advanced digital wireless transmission has played an increasingly important role in tunnel construction. With the wide application of tunnels and the mastery of construction safety during construction, real-time monitoring of road conditions after the project is completed has become the focus.
In the application of the tunnel industry monitoring system, the solution represented by the current wireless transmission system is more practical and efficient. For the tunnel wireless transmission solution, it is closely combined with the various application requirements of the tunnel construction process and monitoring and operation management. On the basis of ensuring the complex environment of various tunnels, the mature wireless communication module product - high-bandwidth digital wireless transmission equipment is adopted. Advanced wireless network transmission system and leading video technology, realize professional tunnel safety system, realize timely control of site by supervisors at all levels, stay away from construction site, progress, personnel status, project department, company headquarters office, mobile terminal (mobile phone, IPAD) waiting Timely and accurate display. The progress of different sites can be controlled anytime and anywhere. In terms of management, work efficiency has been improved, and travel expenses, vehicle and ship expenses for patrolling the scene have been saved. It not only brings about changes in management efficiency, but also saves management costs in the long run.
In order to ensure the effective bandwidth of the wireless transmission points of each wireless communication module and the stability of the entire wireless link, we have adopted different designs according to the specific conditions of the site, which well guarantees the bandwidth of the network in complex situations. brought convenience. In the wireless transmission system of the wireless communication module of the tunnel, the tunnel construction management department can efficiently improve the safety production index, and provide the excavation vehicle excavation, pavement vehicle safety, post-traffic monitoring, environmental monitoring, ventilation control, lighting control, TV, video for the tunnel construction stage. Monitoring, fire alarm, cross access door monitoring, central monitoring and other links provide great help.
2. Demand analysis
Realize on-site control plane operations seen in the project department, headquarters, and handheld terminals
Realize the overall operation of the site in the project department, headquarters, and handheld terminals
Realize the specific situation of the operation hole in the project department, headquarters, and handheld terminal
Realize large screen splicing in the monitoring center, you can see the real-time pictures of different project departments
Video information of different project departments of different project departments
It can realize the control of the on-site moving point camera from the remote end, the project department and the mobile handheld terminal
Hierarchical management can be achieved, and employees at different levels have different operating rights
3. Overall design of wireless communication module system
3.1. Setting and Basis of Accounting Principles
In order to ensure the smooth implementation of the comprehensive monitoring system of tunnel engineering, a detailed wireless centralized monitoring scheme of wireless communication module is formulated according to the site conditions to meet various monitoring needs of relevant departments.
3.1.1. Principles of scheme design
This solution follows the principles of advanced technology, complete functions, stable performance and cost savings. Considering the factors of construction and maintenance operation comprehensively, there is room for expansion for future development, expansion, renovation, movement and other factors. Has the following principles:
(1) Advanced nature and applicability
This system adopts pure digital high-compression low-bandwidth high-definition video signal transmission, and adopts high-bandwidth digital wireless modulation technology to realize link transmission in complex construction environment and avoid damage to the line by large machinery.
(2) Economy and convenience
Fully consider the actual needs of users and the development trend of information technology, according to the needs of customers, design different combinations and electrical combinations according to different locations, without large-scale wiring, the wireless communication module can be copied and reused, and can continue to be used in the next construction site .
(3) Reliability and safety
The design of the system fully considers the on-site circuit and working environment, and DC voltage stabilization is carried out in every place, which can ensure that the equipment will not be damaged in large electrical appliances, arc welding and other work. At the same time, we have designed a DC backup power UPS in the power distribution cabinet, which can guarantee the continuous working time of the equipment for 5 hours in the case of a sudden power failure on site to ensure the operation of the system.
(4) Openness
All system transmission is based on TCP/IP protocol, and different wireless communication module devices can transmit data through our network platform, such as access control, positioning, sensing, etc.
(5) Scalability
In system design, updates, extensions and upgrades can be made taking into account the needs of future technology development and use. And expand the system functions according to the actual requirements of future projects, while leaving redundancy in the design to meet future development requirements.
3.1.2. Basis for scheme design
According to the requirements of relevant national laws and regulations, we carefully studied, analyzed and designed the system scheme. The wireless communication module system has advanced performance, reliable quality, convenient economical and practical exhibition, and seamless connection with other information systems, laying a foundation for the visual management of the security system.
