The smart IC card water meter is a new type of water meter that uses modern microelectronic technology, modern sensing technology, and smart IC card technology to measure water consumption, and to conduct water data transmission and settlement transactions. This is a great improvement compared with the traditional water meter which only has the functions of flow collection and mechanical pointer to display water consumption. In addition to recording and electronically displaying the water consumption, the smart IC card water meter can also automatically control the water consumption according to the agreement, and automatically complete the calculation of the water fee of the stepped water price, and at the same time, it can perform the function of water data storage. Since the data transfer and transaction settlement are carried out through the IC card, it is possible to realize the transition from the charge of meter reading by the staff to the payment by the user to the business office. The IC card transaction system also has the characteristics of convenient transaction, accurate calculation, and settlement by bank. The appearance of the IC card water meter is basically similar to the appearance of a general water meter, and the installation process is basically the same. The use of the IC card water meter is very simple. From the user's point of view, it is to insert the IC card card into the water meter.

The working process of the IC card water meter is generally as follows: insert the IC card containing the amount into the IC card reader in the water meter, after the microcomputer module recognizes and downloads the amount, the valve opens, and the user can use water normally. When the user uses water, the water collection device starts to collect the water consumption, and converts it into the required electronic signal to the microcomputer module for measurement, and displays it on the LCD display module. When the user's water consumption amount drops to a certain value, the microcomputer module sounds an alarm, prompting the user to go to the card holder to pay for water. If the amount of water is exceeded, the microcomputer module will automatically close the electric control valve to cut off the water supply. Until the user inserts the IC card that has been paid, the valve is opened again to supply water.