Case Study: Covina Irrigating
Getting water out of a bottleneck: groov View streamlines HMI access
“Bottleneck” is commonly defined as “a point of congestion,” and that’s what Steve Sherman faced.
Sherman is Field Operations Superintendent at Covina Irrigating Co. in Covina, California. The Southern California company supplies water to the City of Covina and parts of neighboring communities, and maintains a water distribution network of pumping plants, reservoirs, and water treatment facilities.
Covina Irrigating Co. has twelve separate sites in the water distribution system, and at each site Opto 22 control systems monitor and control tanks, pumps, valves, filters, and other equipment.
These control systems communicate with a PC at company headquarters running Opto 22’s PAC Display HMI (human-machine interface) software. An interface built with PAC Display runs on the PC and displays key operating information for each site like equipment status, water levels, flow rates, and pressures.
The PC-based HMI works well at headquarters, but operators needed to access the HMI while away from headquarters, too. To do so, an operator could run remote desktop software on a notebook PC and then connect to the HMI PC in what’s called a “remote session.”
However, only one operator at a time could connect to the PC; other operators couldn’t connect until the current remote session was ended. During busy periods several people might need to connect to the HMI PC.
And that’s the bottleneck Sherman needed to eliminate.