Temperature Measurement in Boreholes by Programmable Logic Controller B&R and Temperature Sensors 1-Wire

Abstract

The aim of this work is create a measurement system for temperature measurements in boreholes using the communication interface 1-Wire and programmable logic controller. Communication is introduced in order to limit the number of wires in the borehole compared to direct use of sensors that each sensor required for at least two wires. The number of wires in communication with a higher number of sensors remains the same. Another important part of the work is the development software for controlling communication between programmable logic controller and 1-Wire sensors. The problem thermal boreholes are contained in the first chapter. Chapter two contains a brief theoretical analysis of the Micro LAN and interface 1-Wire. Chapter third contains a description of the developed measuring system.