Smart Multipurpose Electrical Bed)،Technical Project Report

Project Name: Smart Multipurpose Electrical Bed (SMEB)

Lead Engineer: Wageeh William

Date: January 2026

1. Executive Summary

The Smart Multipurpose Electrical Bed is an advanced medical and home-care solution designed to enhance patient comfort and caregiver efficiency. By integrating the ESP32 microcontroller, high-torque actuators, and IoT capabilities, the system provides automated positioning, patient monitoring, and emergency response features.

2. Technical Specifications

Central Processing Unit: ESP32 Dual-Core MCU (Integrated Wi-Fi & Bluetooth).

Actuation System: Dual 24V DC Linear Actuators for height and inclination adjustment.

Sensing Module: HX711 Load Cell Amplifier with high-precision weight sensors.

Power Management: 24V Intelligent Battery System with AC/DC charging circuit.

User Interface: Interactive Touchscreen Tablet for local control and Mobile App for remote monitoring.

3. Key Functional Features

Autonomous Positioning: Pre-programmed modes for sleeping, sitting, and Trendelenburg positions.

Patient Monitoring: Real-time weight tracking to monitor patient stability and prevent bedsores.

Safety Protocols: Integrated Emergency Stop actuators and an instant alert system via Wi-Fi.

Structural Integrity: Carbon fiber reinforced frame for high durability and lightweight mobility.

4. System Architecture (Hardware & Software)

The system operates on a feedback loop where the ESP32 receives commands from the UI or sensors, processes the data, and triggers the L298N/High-power motor drivers to adjust the bed's physical state.

Software Layer: Built on C++/Arduino framework with asynchronous tasks for sensor polling.

Connectivity: MQTT/HTTP protocols for cloud data logging and remote telemetry.

5. Conclusion

The SMEB project represents a significant leap in "Smart Healthcare" hardware. It successfully combines mechanical engineering with modern embedded systems to provide a safe, scalable, and user-friendly medical device.

6. Visual Documentation List (Attached in previous steps)

3D Isometric Render: General View.

Exploded CAD View: Mechanical assembly.

Wiring & Interconnection Diagram: Electronic layout.

Technical Dimension Drawing: Engineering blueprints.