Priority is given to ensure safety and efficiency of technological processes in hazardous industries, especially in mining operations. Such factories utilize enormous amount of safety sensors. Triggering any one of them stops operations both locally and globally. For example, a single belt conveyor is fitted with up to a hundred sensors and reaches few kilometers length. It is very important to quickly localize a position of a triggered safety sensor to proceed with elimination of an accident. The purpose of this work is to create a hardware-software monitoring system of extended objects (f.e. belt conveyor), which detects a triggering of a two-wire safety line. According to the purpose of this work the following were developed and tested: a physical control model that replicates the triggering of safety sensors, a hardware architecture of monitoring system, a mathematical model of separate nodes of devices, electrical schematics, and a device prototype. A function algorithms and software architectures for each device were developed and tested. As a result an experimental system prototype was developed with accordance to the rules of hazardous environment. On a basis of a monitoring system and a physical control model a simulation bench was developed. By results of concluded experiments following system specifications were deducted: safety sensor triggering detection in less than 100 ms, an address definition from 1 up to 3 simultaneously triggered safety sensors, definition of the type of accident. Created monitoring system may be used to control a variety of industrial extended objects, in particular in gas- and dust-hazardous environment, using discrete safety sensors.
Approach to defining the object of energy efficiency assessment in industry
