IMPLEMENTAТІON OF INTRINSICALLY SAFE SCATTERED CONTROL, COMMUNICAТІON AND SIGNALLING SYSTEMS USING ATUT-NET NETWORKS

Abstract

The paper presents the method of execution the scattered control, communication and signalling systems for mining industry using Lon Works networks. The above mentioned system is composed of separate nodes provided with neuron chip as well as a transceiver (with 78kbit/s operation speed) with proper interfaces. Transceiver provides access of each node to symmetrical pair in bus cable of the system using LonTalk protocol. Supplementing the bus cable with an audio core, interlocking core as well as supply core allowed creation of A TUT-NET network which permits the digital signal transmission between nodes, voice signal transmission between nodes, transmission of audio warning signals as well as programmed voice messages and execution of hardware and sojhvare interlocks. Modification of transceiver output circuits as well as proper realisation of supply system enabled to gain the intrinsically safe A TUT-NET network