Radio And Television Earth Station Network Management Software Design And Implementation

With the rapid development of satellite broadcast television business, the CCTV and many provinces' television and broadcast programs have used the satellite transmission. The Earth station's function is sending the television center's programs or some local television real state through the directional antenna to the satellite. The Earth station's devices are so many, so specialized, and so complex. In order to guarantee that the Earth station the security high quality broadcast, raise the working efficiency, in view of the Earth station's characteristic, the development uses in the broadcast television Earth station the network management system.Earth station network management system's software uses industry software iFIX. The iFIX has so many functions, present in figures and diagrams man-machine contact surface, real-time database, distributional monitoring. We have realized the main system, the signal monitoring subsystem, the high power amplifier subsystem, the day to control the subsystem, the transmission subsystem, the low pressure power distribution subsystem, the UPS subsystem and the auxiliary subsystem.Based on the iFIX system, we have developed some interface software and application software.1) Harmornic network management data exchange module.Most of the radio and television earth station's equipments are made by Harmonic Company. The company's coding multiplexing modulation equipment has NMX network management software system. Using Harmornic interface software SAPI we get the real-time data of network management system. Using Microsoft's XML parser for data analysis we translate the data. Using OPC technology we put the data into the iFIX system. 2) Video and audio monitoring module.Hikvision's video and audio card access television signal video and sound. Using the video and audio card software development kit We have development a video player and video playback module controls the client. The video player service module is an agent as a service to forward video and audio information. The video player embedded into the client-side control in iFIX. In iFIX we can control the player, such as play, stop, switch and so on. System access to the uplink modulator 1 and 2, high-power amplifier, down 7 meters and 3 meters to receive a total of 5 access road, as the audio signal as the audio compression cards, implementation of the same screen at the same time data monitoring and video and audio monitoring .3) Table Service module.Using Visual the Basic programming and ADO ODBC we gain the iFIX historical data, fill to the preliminary design good Excel template, product report file. The report form generation type is two kinds: automatic and manual.4) Interface module.Using the OPC technology, we gain in the iFIX system's each kind of equipment's real-time data, carrie on the pack according to the stipulation data format, transmit through the serial port the data to the computer which assigns.System has been put into operation, the system is stable and reliable. It enhances the Earth station the automation control level. It also has some reference value to the related automation supervisory system's design implementation.