Prepaid
Water Meter Systems
The system is based on the principle
that the water consumptions are calculated, and consumers
are charged accordingly in advance. Consumers spend the amount of water
loaded from credit sales offices by loading the credit to water meters via smart cards.
The water meter cuts off the water by closing its valve when the credit ends,
but when the consumer re-loads the spare credit in smart card to the water
meter, the valve will re-open. Spare credits function allow consumers to use
water until they re-load the smart card.
The counter of the water meter may be viewed
both from mechanical and electronic displays. Electronic display shows
information about loaded credit, total credit, total water consumption,
credit unit price, the interference state and the battery level.
Subscribers are able to load extra
credits from Point of Sales (POS) outside working hours.
Usage of Smart Cards also enables the
credit sales control points to be aware of water meters battery
level,interference states, period, degrees and tariffs. The new tariffs and
period information in the smart card are regularly updated on every credit load
operation. Having loaded the updated information to the smart card, the water
meter easily reads the carried information, and updates itself.
In case of interference, water meter
closes the valve and cuts off water consumption. The officers
of local administrations resets the function of water meter by using
authorized cards, otherwise water meter will remain in its passive state even
if it has loaded credits. Each water meter has its own
smart card which may only be operated on assigned meter.
System Software
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