Wireless Intercom System Solution for Urban Underground Comprehensive Pipe Gallery
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1. Project overview
Urban Underground Pipeline Comprehensive Corridor, that is, a tunnel space is built underground in the city to integrate various engineering pipelines such as communication, gas, heating, water supply and drainage. As a part of the urban underground pipeline comprehensive corridor, the pipe corridor is generally 2 to 4 meters in width and height, but the length is different, the short is several kilometers, and the long is even dozens of kilometers. In order to facilitate the dispatching and communication between the staff, as well as to facilitate maintenance and repair. The pipe corridor wireless intercom system is an indispensable communication system in the urban integrated pipe corridor. However, due to the complex structure of the underground pipe gallery, the long length, and the tunnel is generally a signal blind zone, for the communication system, it needs to be customized according to local conditions.
2. Customer needs
According to the early communication with the owner, listening to the opinions of the management and use departments, combined with the drawings and on-site surveys, the customer’s requirements for the wireless intercom and inspection of the pipe gallery are as follows:
1. The wireless intercom system of the underground city integrated pipe corridor meets the daily calls of multiple departments such as construction, debugging, maintenance, and inspection. Each group can communicate independently without interference; it can meet group calls and individual calls under special circumstances. , Full call, etc.;
2. The wireless intercom system of the underground city integrated pipe gallery needs to cover the entire pipe gallery to meet the no-blind area communication between the ground and the pipe gallery;
3. The newly constructed pipe gallery trunking wireless intercom system, in addition to the basic call functions such as single call, group call, and full call, also has the functions of background dispatch, inspection, and positioning;
4. In order to save investment and meet the urgent communication needs of the pipe gallery wireless intercom project, the base station partly rents the operator’s base station resources;
5. The frequency used by the wireless intercom system of the underground city integrated pipe gallery is the legal frequency approved by the local radio committee;
Third, the design of the wireless intercom system of the underground city integrated pipe gallery cluster
According to the needs of customers, in line with the needs of saving investment and rapid deployment, the base station uses the original pipe corridor wireless intercom system, which can cover the entire main urban area. The base station provides 4 communication groups to meet the needs of construction, debugging, maintenance, and inspection The work of multiple departments needs to be required. As the pipe corridors are distributed in various places in the urban area, and they are all underground with serious signal shielding, for the introduction of wireless communication signals, the separate layout of base station equipment faces problems such as high cost and difficulty in networking. This project uses the latest wireless development of Hanwang Repeater open-circuit technology uses ground-mounted directional antennas to connect wireless signals to wireless open-circuit repeaters, and connect wireless signals to the underground pipe gallery. The inside of the underground pipe gallery uses leaky cables to achieve the signal inside the pipe gallery. Cover evenly.
The wireless repeater can be installed on the wall or installed in the machine room of the pipe gallery, equipped with 1KVUPS to ensure normal communication when the power is interrupted for maintenance. The leaky cable is installed on the weak current bridge frame on the top of the pipe gallery with a special fixture. The entire system uses the signal source of the original system to achieve unified dispatch and unified communication between ground, underground and dispatch centers.
4. Design of wireless intercom inspection system for pipe gallery industry
In the management system for operators in the pipe gallery industry, in order to enable managers to timely understand and accurately grasp the production dynamics of their posts, and to control and handle various safety hazards such as running, leaking, dripping, and leaking, wireless intercom inspections have been implemented in each area. At the same time, the system is linked to the daily attendance assessment. It has experienced various methods such as inspection bell, listing inspection, inspection instrument, inspection stick and so on. In order to realize the real intelligence of inspections and require real-time recording of equipment conditions and timely confirmation and reporting during inspections, it is required to combine the inspection equipment carried with the basic intercom tools to construct cluster inspections and routes , Playback and other functions.
1. There are problems with the traditional inspection system
●Inspection bells, listing methods, and inspection sticks are the current mainstream methods, which are relatively backward and have potential safety hazards;
●Inspectors hold the inspection stick in one hand and the walkie-talkie in the other hand, which is extremely inconvenient to move and work.
●The off-line inspection stick can only come back to read the information when it is handed over. The information is not real-time, and the recordable data only stays on the “check-in”, not combined with the specific business; it can only be supervised after the fact.
●The recorded data is large, the cost is high, and the non-real-time method is adopted, which cannot be timely and fast, is inefficient, and has a narrow application area;
●Inspection in place and invalid recorded data to grasp its authenticity
●A large amount of inspection information is inconvenient to save, easy to lose, time-consuming, and inconvenient to query information
2. Pipe gallery digital trunking wireless intercom inspection system. Pipe gallery digital wireless intercom trunk inspection system is based on digital trunking technology, adopts active RFID technology, and innovatively combines walkie-talkie and RFID technology to combine inspection walkie-talkies with traditional The patrol rod of the patrol is combined into one, which can greatly simplify the inspection method of the patrol personnel.
Inspection personnel only need to carry an inspection walkie-talkie to complete the inspection work. Compared with the previous security personnel, they need to carry the inspection stick in one hand and the walkie-talkie in the other hand, which is not convenient for work. The staff installs a dispatching station integrated with the power supply and the vehicle platform in the command office. By connecting with the PC, the administrator can monitor the inspection situation in real time through the PC terminal. The inspection button selects a suitable place for installation according to the needs of the scenic area management party.
The digital wireless intercom inspection system can help you effectively supervise the inspectors and ensure their inspections are in place. The system can be used in security patrols, fire patrols, various patrols, equipment inspections, pipeline inspections and other fields, and can effectively improve the management level in these fields.
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