Publication: Paddy field monitoring system using quasi-CDMA-based wired communication
Date
2024-08
Authors
Lim, Zhi Jie
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Abstract
Rice is an important staple for the Malaysians and many efforts had been done to ensure the self-sustain level for the rice is sufficient. Implementation of technology, such as IoT, and sensor network, in agriculture can provide positive impact to the productivity of the crops. Based on the previous FYPs, the proposed monitoring systems were having problems with distance communication more than 100 metres, low hardware stability in 30-pins NodeMCUs ESP32s, and limited bandwidth for multiple nodes application. This project aimed to achieve two objectives, which are to implement quasi-CDMA technique on a wired sensor network and to study the performance of the proposed wired sensor network. The proposed design requires a sensor node that consists of an Arduino Nano, a DHT11 sensor module, an ultrasonic module and a pH sensor with BNC connector module while the adder node is an Arduino Mega 2560. Arduino IDE application is used to program, debug and display the outcome during system development. Based on a sensor node and an adder node model, the system latency is about 52.4 seconds, the block error rate for the proposed system is 0%, and the system throughput is calculated as 0.867 bps according to two procedures in collecting data for system performance evaluation. The project is considered partially successful as quasi-CDMA feature is implemented and the system performance is studied based on a sensor node and an adder node model instead of wired sensor network model.