This model demonstrates real-time, live monitoring of water flow and how equipment responds to that flow. It is one of only a few fully operational models in the state.
| This model demonstrates the electronic monitoring, management and operations of canal flows.In this demonstration the column of water represents a canal or water reservoir. Release of water demonstrates diversions by Agriculture, Municipal or Industrial water users. The pumps represent the source of water delivered to a canal or reservoir. A Ball float in the water column is connected to a transducer (measurable electronic winding device) which sends a signal to the RPU that is translated into a relative elevation. This information is captured in a data file in the RPU to be polled by the main computer.
The "TeleSAFE Micro 16" is the brains of this "Remote Processing Unit" (RPU). This acts much like a remote computer terminal. It has memory, processing, controlling and communications (modem) capability. In the field it would have a battery backup for uninterrupted power supply and uninterrupted monitoring and control operation.
The Main Computer "Polls" the RPU once per second via the radio modem. This provides "realtime" monitoring data and control communications. The computer sends messages to the RPU providing set points to the processing unit to control the water elevation by adjusting the on/off level for the pumps (or in a canal, gate adjustments). The processing unit electronically turns the pumps on and off controlling the height of the water in the column.
The Radio communications is based on technology developed during the Gulf War. The Spread Spectrum concept utilizes multiple bands selecting the clearest band for transmitting and response of messages all in a nanosecond. The directional antenna (Yagi) has a reliable range of 17 to 30 miles in a direct line-of -site.
If the computer is turned off or loses communication, the RPU will continue to implement the last set levels from memory.
The main computer program not only communicates the on/off functions via radio but also monitors (receives) the activities and water levels data from the RPU. A permanent record can be maintained as the files are kept in the RPU and radioed in to the computer with every transmission. This is called data monitoring and "Trending".
Alarms are available to let the operator know if the water elevation has gone too high or low. Alarm programs are available that can call residences or offices and make trouble announcements to alert staff of impending problems.
Day Camp | SCADA | Groundwater