Based on CAD map, the heating area under the jurisdiction of different stations shows the heating condition parameters in gradual color blocks (from green to dark brown). Use electronic sand table (map) to show the comparison of station parameters.

The electronic sandbox system shows the data changes by color blocks. The working conditions of each station are clear at a glance and the visual impact is strong. Overshoot and imbalance areas can be found quickly.

Electronic sand table can display various site parameters: Temperature of primary water supply and return water, primary water supply and return water pressure and primary pressure difference; Temperature of second water supply and return water, second water supply and return water pressure, average temperature of second water supply and return water; alarm, communication, etc.

On the basis of the map presentation form, the dispatcher can play back the changes of heating operating conditions over a period of time, replace the historical data query, and understand the changes of the whole network easily and intuitively.