Greenhouse Management System

My role:

developer

Team size:

Company:

None

BeagleGreen is a system designed to assist greenhouse owners in managing their plants effectively by monitoring temperature, humidity, and light levels.

Technologies Used:

react

node.js

socket.io

IoT

Description

BeagleGreen - Greenhouse Management System

Introduction

BeagleGreen is developed to aid people who own greenhouses and are finding it hard to tend to their plants, monitor heat, light, and humidity levels. The main purpose is to simplify the lives of greenhouse owners through an intelligent greenhouse.

Analysis

Once the problem domain was understood, the requirements were set. The system allows users to:

See live temperature data
See live humidity data
See live light intensity data
Control the opening and closing of windows
Control the heating
Control the light intensity of the artificial light

Design

The system consists of two main layers: Embedded and Presentation. Hardware components include:

Temperature and humidity sensors (HIH8120)
Artificial light module
Light sensor (photoresistor)
Heating device (relay)
Servo motor for window control

Pin Usage Table

Pin number	Power Voltage	Device connected	Mode	Purpose
15	5V	Relay	GPIO	Heating control
16	5V	Servo motor	PWM	Window control
19,20	3.3V	Humidity sensor	I2C	Measuring humidity
19,20	3.3V	Temperature sensor	I2C	Measuring temperature
33	1.8V (VDD_ADC)	Photoresistor	ANALOG	Measuring light intensity
21	3.3V	Artificial light	PWM	Setting artificial light

Schematic

The schematic shows the hardware connections.

Figure 1. Schematic

Implementation

Embedded Layer

In the implementation, input and output types of components were determined and connected to the BeagleBone Black (BBB) device. For instance, temperature and humidity sensors required I2C communication, while the light sensor used an analog pin. Servo motors and artificial lights connected to PWM pins. The heating system used a relay for control.

Presentation Layer

Communication between the Presentation and Embedded layers was established using Node.js. A web server on port 8888 allowed client-server communication, and Socket.io enabled real-time interaction. Users could control heating, light, and windows via a web interface.

Testing

The system was rigorously tested to ensure it met requirements, including accessing the web interface, loading real-time sensor data, controlling heating, adjusting light intensity, and managing window openings.

Test Results:

Accessing client side by going to 192.168.7.2:8888: ✓
Loading data from sensors: ✓
Turning on/off heating by user input: ✓
Changing the light intensity: ✓
Opening and closing the window: ✓

Results and Conclusions

BeagleGreen successfully integrates hardware and software components to create an intelligent greenhouse management system. Users can monitor, control, and optimize conditions within the greenhouse, and the system fulfills its requirements. This solution empowers greenhouse owners to efficiently tend to their plants and provides real-time insights into environmental conditions for improved cultivation.