Wireless Sensors Network Kit: Difference between revisions
Created page with "= Wireless Sensor Network (WSN) Kit Documentation = Wireless Sensor Network (WSN) is a system of spatially distributed sensor nodes that wirelessly collect and transmit data to a central server for monitoring, analysis, and visualization. == 1. Overview == The WSN Kit is a modular wireless sensor network system designed for educational and experimental use. It includes: * '''5 Sensor Nodes''' (based on NodeMCU ESP8266) * '''2 Repeater Nodes''' (based on NodeMCU ESP8266)..." |
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== 4. Connection Flow Diagram == | == 4. Sensor Types Used == | ||
Each sensor node in the WSN Kit is equipped with one or more of the following sensors: | |||
* '''HR202 Humidity Sensor''' – Detects ambient humidity levels. | |||
* '''DS18B20 Waterproof Temperature Sensor''' – Measures temperature in harsh or wet environments. | |||
* '''M12 Smoke Sensor''' – Detects smoke presence in the air. | |||
* '''LDR (Light Dependent Resistor)''' – Measures light intensity. | |||
* '''Push Button''' – Used as a manual trigger to activate a buzzer. | |||
These sensors help demonstrate different real-world use cases such as environmental monitoring, fire detection, and user interaction. | |||
== 5. Connection Flow Diagram == | |||
<pre> | <pre> | ||
Sensor Node (S1) ---> Repeater Node (R1) | Sensor Node (S1) ---> Repeater Node (R1) | ||
| Line 64: | Line 77: | ||
</pre> | </pre> | ||
== | == 6. Installation Guide == | ||
# Flash firmware on NodeMCU sensor and repeater nodes. | # Flash firmware on NodeMCU sensor and repeater nodes. | ||
# Configure MQTT or custom protocol for node communication. | # Configure MQTT or custom protocol for node communication. | ||
| Line 70: | Line 83: | ||
# Power up nodes in this order: '''Server → Repeater → Sensor''' | # Power up nodes in this order: '''Server → Repeater → Sensor''' | ||
== | == 7. Desktop GUI Features == | ||
* Live topology map | * Live topology map | ||
* Real-time data stream view | * Real-time data stream view | ||
| Line 76: | Line 89: | ||
* Node configuration panel | * Node configuration panel | ||
== | == 8. Notes == | ||
* Make sure each sensor is uniquely addressed. | * Make sure each sensor is uniquely addressed. | ||
* Only one repeater should handle a sensor's data. | * Only one repeater should handle a sensor's data. | ||
* GUI updates every 5 seconds (customizable). | * GUI updates every 5 seconds (customizable). | ||
Revision as of 10:33, 22 May 2025
Wireless Sensor Network (WSN) Kit Documentation
Wireless Sensor Network (WSN) is a system of spatially distributed sensor nodes that wirelessly collect and transmit data to a central server for monitoring, analysis, and visualization.
1. Overview
The WSN Kit is a modular wireless sensor network system designed for educational and experimental use. It includes:
- 5 Sensor Nodes (based on NodeMCU ESP8266)
- 2 Repeater Nodes (based on NodeMCU ESP8266)
- 1 Center Server Node (based on Raspberry Pi)
- Desktop GUI for real-time network and data visualization
2. System Architecture
The system follows a hierarchical network model:
- Sensor Nodes transmit data to Repeater Nodes
- Repeater Nodes forward the data to the Center Server
- The Server Node store, processes and visualizes the data with the Desktop GUI
Important Notes:
- Sensor → Repeater (one-way)
- Repeater → Server (one-way)
- No direct Sensor ↔ Server communication
- Each Sensor connects to only one Repeater
- Each Repeater connects to only one Repeater/Server
3. Components
| Component | Quantity | Platform | Description |
|---|---|---|---|
| Sensor Node | 5 | NodeMCU ESP8266 | Equipped with environmental sensors |
| Repeater Node | 2 | NodeMCU ESP8266 | Relays data to the Server |
| Server Node | 1 | Raspberry Pi | Collects, stores, and visualizes data |
| Desktop GUI | 1 | Cross-platform | Shows node and connection statuses |
4. Sensor Types Used
Each sensor node in the WSN Kit is equipped with one or more of the following sensors:
- HR202 Humidity Sensor – Detects ambient humidity levels.
- DS18B20 Waterproof Temperature Sensor – Measures temperature in harsh or wet environments.
- M12 Smoke Sensor – Detects smoke presence in the air.
- LDR (Light Dependent Resistor) – Measures light intensity.
- Push Button – Used as a manual trigger to activate a buzzer.
These sensors help demonstrate different real-world use cases such as environmental monitoring, fire detection, and user interaction.
5. Connection Flow Diagram
Sensor Node (S1) ---> Repeater Node (R1) Sensor Node (S2) ---> Repeater Node (R1) Sensor Node (S3) ---> Repeater Node (R2) Sensor Node (S4) ---> Repeater Node (R2) Sensor Node (S5) ---> Repeater Node (R2) Repeater Node (R1) ---> Server (Raspberry Pi) Repeater Node (R2) ---> Server (Raspberry Pi)
6. Installation Guide
- Flash firmware on NodeMCU sensor and repeater nodes.
- Configure MQTT or custom protocol for node communication.
- Set up Raspberry Pi as server and install GUI software.
- Power up nodes in this order: Server → Repeater → Sensor
7. Desktop GUI Features
- Live topology map
- Real-time data stream view
- Connection status indicators
- Node configuration panel
8. Notes
- Make sure each sensor is uniquely addressed.
- Only one repeater should handle a sensor's data.
- GUI updates every 5 seconds (customizable).