Name IC card one card management system The system use IC card prepaid energy meter as the main control meter, both water, gas and heat meter are subsidiary meter. It adopts “water charge controlled by electricity", and "gas charge controlled by electricity” solution. The specific procedure is: 1.the system set up correspondent relationships of energy, water and gas meter. 2. Using management card to set the water, gas, heat meter’s serial number and send it to the system. 3. When the user purchases electricity, insert the IC card to each meter to record the information of consumption, and then make the charging. The new generation IC card water, energy, gas and heat meter can work over 10 years. specification 1.Base on WINDOWS98/2000/XP operating system 2.Water and energy integrated management software, good compatibility of all series IC card meter that are produced by us 3.User friendly, simple operation, easily setup, completes functions. 4.The system accords with GB/T18460. 2-2001 1.Multiple data backups, management of 3 levels operation identity