Design of PDAM Water Payment Bill Monitoring System Prototype Based Long Range (LoRa) Communication


Widya Intawani Pasaribu, Dewi Putri Sari Nainggolan, Rifqi Fuadi Hasani, Sri Danaryani

Abstract


Clean water is one of the main needs of households so that people regularly subscribe to PDAM services. The PDAM water meter bill payment system in general cannot know the volume of water used and the size of the bill. Therefore, a monitoring system for PDAM water bill payment based on LoRa communication is designed which has a water flow sensor to measure water discharge and uses an LCD to display the volume. water. With LoRa technology, LoRa transmitter can send water volume data without having to use the internet to the LoRa gateway. On the receiving end, there is a raspberry pi that is used as the LoRa gateway. To view data sent on TTN, the gateway must be connected to the internet. Then the water volume data is converted and multiplied by the PDAM water rate and connected to Thingspeak. By using an end device that is connected to the internet, users can access Thingspeak to monitor total water usage and the amount of PDAM water bill payments at any time and can be accessed anywhere. The test results obtained that the measurement value of the water flow sensor is close to accurate, namely using the calibration formula to produce an error percentage of 6,75% and an average water discharge of 23,14 L / H. The success of sending data in the LoS state reached 130 m with RSSI -76 dBm, Non-LoS state, reached 130 m with RSSI -94 dBm, and Non-LoS multi-storey buildings reached 15 m with RSSI -78 dBm. The average RSSI in LoS conditions was -66,31 dBm, non-LoS conditions was -76,06 dBm and Non-LoS conditions in multi-storey buildings with a distance of 8 meters was -73,5 dBm, and a distance of 15 meters is -80,5 dBm.


Keywords


Long Range; LoRa; IoT; Internet; Microcontroller; TheThingsNetwork; Raspberrypi; Arduino; waterflowsensor;

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