Electronic remote water meter (IC card large-diameter prepaid water meter)

• By controlling the water usage of users through valves, it ensures that users purchase water before using it, and that water sales units receive water bills in a timely manner.

• Alarm function: power undervoltage alarm, insufficient margin alarm.

• Hoarding limit function: It can effectively prevent users from maliciously hoarding water.

• Credit function: It has a zero crossing water credit function.

• Abnormal detection function: If there is strong magnetic field interference with the measurement signal or other abnormal situations, the meter will automatically record them.

• Bidirectional data transmission function: Through the user's RF card, the remaining water level of the water meter, whether the water meter is disturbed, whether the battery is under voltage, and other status information can be obtained.

• Users can freely control their water purchase time and have a clear understanding of their water usage status.

• Through backend software, water supply units can understand users' water usage and make scientific predictions for production water volume. Timely understanding of the usage and status of water meters on the user side, in order to maintain faulty water meters in a timely manner. Implement tiered water pricing for water meters, effectively manage water resources, and lay the foundation for intelligent and integrated community management.

You can set the user type as one table with multiple cards or one table with one card

Adopting the Philips Mifare 1 RF card. Users can also use a contact IC card (ATMEL102).

Mechanical metrologyB level.

Pulse sampling schemeDouble reed switch counting.

Anti magnetic interference (attack) schemeAffected by magnetic field interference, the valve is closed when the dual reed switches are simultaneously closed. After eliminating the interference, the card is swiped to open the valve.

Control valve schemeWhen the valve is closed - no value, warning value, insufficient power supply voltage, removal of power supply, magnetic interference.

When the valve is open and charged with a value, a warning is issued when the valve is closed and the card is swiped. When replacing the effective power supply, the magnetic interference is eliminated when the valve is closed and the card is swiped.

Valve washing schemeTo prevent the valve from not operating for a long time and affecting the flexibility of the switch, the valve is opened and closed every certain time, usually about twice a month.

power schemeAdopting 3.6V lithium battery, easy to replace. The lifespan is 5-8 years.

Management CardSet Card - Set System Parameters.

Initialization card - Use both zero value and value initialization cards to create a test card (for testing card reading and valve switching). Clear accumulated usage, original remaining amount, restore default working sector and key.

Self check card - When swiping the card, display the data in the table in sequence.

Transfer card - Retrieve the remaining amount from the table and transfer it to the original or new table.

Fault clearing card - When a magnetic interference fault occurs, clear the fault and open the valve.

lcd displayDuring power on self-test - version number, error number and number of errors, card number, cumulative usage, remaining usage.

When reading cards - cumulative usage, remaining usage.

Press the card reading button - cumulative usage, remaining usage.

Recharge reminder - when the warning value is reached.

Battery swapping prompt - when the power supply voltage is insufficient.

Fault prompt - magnetic interference, other errors