FOD-900 – A MULTIPLE TRANSMISSION SYSTEM
FOD-900 is a system designed to collect and send information about the technological process from the underground of the mine to the supervisory point. The system provides transmission of binary and analog slow-changing signals as well as presentation of the operating status of devices on a synoptic board and at computer workstations. The system is multi-channel, i.e. in one transmission path, which constitutes a pair in a telecommunication cable, frequencies for 30 channels have been declared. In each channel you can send information about the selected parameter of the controlled device. For example, it can be: operation or a standstill of conveyor belts, pumps, fans, shearers, closing or opening of ventilation openings, etc. The big advantage of the solution is supplying transmitters of the field part from the central unit of the system located on the surface.
FOD-900 has been implemented in many mines and, having gained the status of a basic system for transmission of information about the technological process, has been successfully used and developed to this day.