chapert 1and 2 diagrams iot

 

🌐 1️⃣ IoT Reference Architecture Diagram

+----------------------+
|     Business Layer   |
+----------------------+
|    Application Layer |
| (Mobile App/Web UI)  |
+----------------------+
|   Processing Layer   |
|   (Cloud / Analytics)|
+----------------------+
|   Connectivity Layer |
| (WiFi/4G/Bluetooth)  |
+----------------------+
|      Device Layer    |
| (Sensors/Actuators)  |
+----------------------+

👉 Draw 5 stacked boxes. Write data flow arrow ↑ upward.

🔗 2️⃣ IoT Communication Models Diagram

✔ Device-to-Device

[Sensor]  <---->  [Smart Bulb]

✔ Device-to-Cloud

[IoT Device] ---- Internet ----> [Cloud Server]

✔ Device-to-Gateway

[Device] ---> [Gateway] ---> [Cloud]

✔ Back-End Data Sharing

[Cloud] ---> [Other Apps / Services]

📶 3️⃣ IoT LAN vs IoT WAN Diagram

          IoT LAN (Short Range)
      [Sensor]--WiFi--[Router]--[Phone]

          IoT WAN (Long Range)
      [Sensor]--4G/LoRa--[Internet]--[Cloud]

🏗️ 4️⃣ IoT Level-3 System Diagram

[Sensor Node] ---> Internet ---> [Cloud] ---> [Mobile App]

👉 Only ONE device directly connected to cloud.

🏭 5️⃣ IoT Level-4 System Diagram

[Node1] \
[Node2] ---> [Gateway] ---> [Cloud] ---> [Application]
[Node3] /

👉 Multiple devices + gateway.

📍 6️⃣ IoT Node, Gateway, Proxy Diagram

[IoT Node] ---> [Gateway] ---> [Proxy] ---> [Cloud Server]
   |               |              |
 Sensor        Data Filter     Security
 MCU           Protocol Conv.  Access Control

⚖️ 7️⃣ IoT vs M2M Communication Diagram

✔ M2M

[Machine] <------ Private Network ------> [Machine]

✔ IoT

[Device] ---> Internet ---> [Cloud] ---> [App]

⚙️ 8️⃣ Sensor & Actuator Diagram

Environment ---> [Sensor] ---> [Microcontroller] ---> [Actuator]
   (Input)           |                |                 (Output)

Example:
Temperature → Sensor → ESP32 → Fan ON.

🏭 9️⃣ IoT vs IIoT Diagram

 IoT (Consumer)                IIoT (Industrial)
[Smart Watch]              [Factory Machine]
      |                           |
    Cloud                       Edge + Cloud

🌡️ 🔟 Humidity & Temperature Sensor Diagram

        +-------------------+
        |   DHT11 Sensor    |
        | Temp + Humidity   |
        +---------|---------+
                  |
               [Arduino]
                  |
               [Cloud/App]

🧠 PRO EXAM TIP (VERY IMPORTANT)

When drawing in exam:

✅ Use rectangles only
✅ Add arrows →
✅ Write short labels like Sensor, Cloud, App
❌ Don’t draw complex artistic diagrams

Teachers want clear logic, not fancy drawing.

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