Application Of Coal Mine Wireless Communication System Based On CDMA Technology

Have a technical comparison 6 kinds of the existing coal mines for underground wireless communications systems. CDMA has a more obvious technological advantage, and introduce the principle of CDMA technology, system architecture, the basic characteristics and functions.Based on CDMA technology and optical transmission technology solutions for wireless communications, Observe the system design and function design, in order to achieve on the ground and underground coal mine-wide wireless coverage. Describe the phone call process and communication protocols Simplely. Then Introduce the system of major equipment and functions. On the whole to the antenna, directional antenna, leaking underground cables We give 3 kinds of wireless coverage calculation methods and application of the theory of comparative results.And the system installation and equipments in the Caili coal mine , also describe configuration information, application status.At the same time We encounter a problem with the fault call in the Caili coal mine, We give the theoretical analysis, and the adoption of practical steps to check, also give the failure analysis process to determine the ultimate cause of failure and put forward a solution.Through the well operation of the system and good results Caili coal mines, you can look forward to mobile communications coal business , and The CDMA technology will give the development of coal mines safety a very strong guarantee.