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Digital trunked PMR system of Open-pit Coal Mine of Shenhua Northern Electric Power Shengli Energy Co., Ltd.
Background
The Open-pit Coal Mine of Shenhua Northern Electric Power Shengli Energy Co., Ltd. (“Shengli Open-pit Coal Mine” for short) is located in the 5Km area to the northern suburb of Xilinhot City, Inner Mongolia Autonomous Region. Open-pit coal mine is close to 101 provincial highway, about 10 kilometers away from Xilinhot Airport, and its geographical position is very superior.
Shengli Open-pit Mine is rich in coal resources, and its output is increasing year by year. It is a key large-scale coal and power base in the country. According to the characteristics of the overall production operation in the mining area, the mining area is large, the environment is complex with many workers. It is necessary to use wireless mode to realize voice communication and various command and scheduling functions. In order to solve the problem that the existing analog wireless intercom system is aging and the equipment can not be repaired, and realize the group dispatching between the production command and dispatching center of the company and the secondary units such as open pit mine, storage and transportation company and maintenance center, the company decided to build a powerful 800M TETRA digital trunked PMR system after many scientific investigations and field tests, and combined with the actual situation of safe production in the company.


Solution


According to the actual demand and operation characteristics of Shengli Open-pit Mine, a digital trunked PMR system of Eastcom eTRA is constructed, which meets the TETRA standard. It includes exchange center, TETRA outdoor integrated base station, repeater, network management system, standard dispatching station, whole network recording system, vehicle-carried station and handset. The base stations are connected to exchange centers via links. The optical fiber repeater is used to fill the blind area. At the same time, ISGW is configured to meet the need of interconnection with the cable telephone system (PSTN).


Customer Value

The project realizes the upgrading of production dispatching command from analog to digital in Shengli Open-pit Mine, improves the quality of calls and the efficiency of frequency usage, and increases the user capacity and user grouping, and the radio dispatching and command efficiency of the whole mining area. By using the digital trunked PMR system, it can realize high quality wireless voice communication, production operation command and dispatching, whole network recording and other functions in mining area, realize the group dispatching between the production command and dispatching center of the company and the secondary units such as open pit mine, storage and transportation company and maintenance center, and improves the company's production efficiency and safe production capacity.
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