HOW IT WORKS ???

OBJECTIVE
To know the operation system by designing the block diagram.


CONTENT

Block Diagram

POWER METER

- Power meter is already made.

- Generate pulse will display power consumption in unit KW 

  (1000pulse = 1KW)

SMART CARD ( RFID)

- Using pre-paid energy meter: Smart Card already build stored data use barcode by using RFID (Radio Frequency Identification)

- The smart card is available at various ranges (i.e. Rm2, Rm10, Rm30).

- After user touch smart card on RFID reader  which is connected with  Microcontroller unit (PIC 16F876A).

- The RFID will read and stored information by using microcontroller then it will recognize the data and provides the appropriate operation.

MICROCONTROLLER ((PIC 16F876A)

- The microcontroller will act as the brain of the circuit. 

-  It will constantly check the credit with accordingly and provide the power consumption depend on the credit amount. 

LCD DISPLAY

- The amount of credit will be displayed at the LCD display. 

- According to the power consumption the amount will be reduced.

RELAY and BUZZER

- When the credit is exhausted and not enough, the buzzer will be beeped and automatically relay will be cutoff the supply electricity for shutdown the whole system. 

- Buzzer used as a reminder before the money directly out.

LED

- Red LED: Amount of credit is exhausted

- Green LED: Have amount of credit

- White LED: Signal for pulse and amount of credit reduced

- Orange LED:Power indicator 

CONCLUSION

Next time, do overall flow chart for the system.

To make easy build the suitable circuit.

Best method to ensure cost-effective and easy to use aimed on payment billing.