Wireless remote control of a PLC system
Martin Hjalmarsson, Stefan A. I. Johansson · Chalmers Publication Library (Chalmers University of Technology) · 2011
Industriarmatur-ARI AB (IA) design, manufacture and sell products for the district energy, HVAC, water and industry markets.Focus is valves and actuators, but the product range also includes level gauges, water meters, and control cabinets etc.This thesis aims to further develop IA Hecon, a patented system for remote control of sectioning valves for district energy, to support wireless connectivity.IA Hecon is a combination of an electronic control system, a hydraulic powerpack and hydraulic valves.In its current version, it is only possible to control the valves by the operator panel in the control cabinet or by connecting the cabinet with a cable to the control room.In many situations no cable exists between the cabinet and the control room or the cable quality is very bad.To overcome this restriction a wireless solution is wanted.Based on the prerequisites for IA an analysis was performed to find a solution suitable for further development and future product realization in line with the company's strategy.The result of this thesis is a recommendation of a wireless solution able to remote control IA Hecon over GPRS or 3G.The solution is a combination of the mVio M2M system from Wireless Maingate and a GPRS modem or M2M platform from iOWA AB.The result also includes a prototype of a remote control wireless solution able to control IA Hecon.We also identify and judge several alternative solutions.