Introduction
This scheme uses 8 bit CMOS microcontroller Microchip company, has wide voltage, low power consumption, LCD driving and rich peripheral interface resources, especially suitable for the application of prepaid water / gas meter
Prepaid water / gas meter according to the different water / gas meter information storage medium for the TM card water / gas meter, IC card water / gas meter, RF card water / gas meter etc.. The evaluation board is an IC card water / gas. IC card intelligent water / gas meter, IC card is used as the carrier of information - water / gas. IC card has high security, large data capacity, convenient use, low cost, is an ideal carrier of data exchange, so it is the most common application in prepayment meter. Intelligent water / gas meter is mainly composed of a base table, a control unit, power supply and storage media.
Function characteristics
◆The function of anti damage
◆Anti magnetic function
◆Prevent line function
◆The tamper switch
◆Low voltage detection
◆Double dry reed pipe flow pulse measurement
◆Double dry reed pipe flow pulse measurement
◆LCD display can be tuned in to watch the electricity usage
◆Card: card, card, check card

The system block diagram:

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