3.0 PROBLEM DEFINITION - W-Div-Engg-Exploration-Odd-2026-27/Repo-11 GitHub Wiki
| System Requirement / Problem to Solve | Category | Implementation / Specification |
|---|---|---|
| User Detection | Function | ESP32 camera and Time-of-Flight (ToF) distance sensor array |
| Data Processing | Function | Onboard ESP32-S3 microcontroller to process sensor and vision data |
| Horizontal Rotation | Function | stepper motor |
| Vertical Tilt | Function | servo motor |
| Continuous 180° Rotation | Function | Mechanical gearbox or the rotor shaft of the main motor |
| Dynamic Airflow Adjustment | Function | Scaling fan PWM speed proportionally to ToF distance data |
| Supplemental Cooling | Function | Ultrasonic piezo misting atomizer |
| Touchless Control | Function | TinyML hand gesture recognition |
| Status Indication | Function | RGB LED ring indicator to display tracking status |
| Power Management | Function | Automatic low-power sleep mode after 3 minutes of user absence |
- Problem Definition for Functions The system must autonomously detect a user utilizing an ESP32 camera and a Time-of-Flight (ToF) distance sensor array. It needs to process this sensor and vision data via an onboard ESP32-S3 microcontroller to drive horizontal rotation using a stepper motor, and vertical tilt using a servo motor . Continuous 180° rotation must be enabled through a mechanical gearbox or the rotor shaft of the main motor. Additionally, the device must adjust airflow by scaling fan PWM speed proportionally to ToF distance data, provide extra cooling via an ultrasonic piezo misting atomizer, and allow touchless control through TinyML hand gesture recognition. Finally, it must display tracking status using an RGB LED ring indicator and manage power efficiently by automatically entering a low-power sleep mode after three minutes of user absence.
| System Requirement / Problem to Solve | Category | Target / Strategy |
|---|---|---|
| Core Operation | Objective | Autonomously track and cool a user at a desk |
| Form Factor & Portability | Objective | Highly portable and compact design, housed in a lightweight 3D-printed PETG enclosure |
| Tracking Performance | Objective | Achieve high tracking stability utilizing closed-loop Field-Oriented Control (FOC) drivers |
- Problem Definition for Objectives The primary objective is to autonomously track and cool a user at a desk. The device must be highly portable and compact, which is achieved by housing it in a lightweight 3D-printed PETG enclosure. Furthermore, it aims to deliver high tracking stability during operation by implementing closed-loop Field-Oriented Control (FOC) drivers.
| System Requirement / Problem to Solve | Category | Boundary / Limit |
|---|---|---|
| Financial Budget | Constraint | Total prototype cost must remain under ₹10,000 INR |
| Electrical Power | Constraint | Must be powered by an external 12V DC power adapter equipped with a buck converter |
| Operational Range | Constraint | Maximum indoor tracking distance is strictly limited to 4.0 meters |
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Problem Definition for Constraints The development and operation of this prototype are subject to strict boundaries. Financially, the target cost of the prototype must remain under ₹10,000 INR. Electrically, the system must be powered by an external 12V DC power adapter equipped with a buck converter. Operationally, the maximum tracking distance limit is restricted to up to 4.0 meters indoors.
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Comprehensive Problem Definition The goal of this engineering project is to develop a compact, portable, and autonomous desk fan that tracks and cools a user, housed in a lightweight 3D-printed PETG enclosure. The system must detect the user via an ESP32 camera and ToF sensor array, processing the data through an ESP32-S3 microcontroller to actuate gimbal motors for horizontal and vertical tracking with continuous 180° rotation. It must feature dynamic airflow adjustment based on distance, an ultrasonic misting atomizer for additional cooling, TinyML hand gesture controls, an RGB LED status indicator, and an auto-sleep power management system. The system must maintain high tracking stability utilizing closed-loop FOC drivers. The entire design must be executed within strict constraints: the prototype cost cannot exceed ₹10,000 INR, it must be powered by an external 12V DC adapter with a buck converter, and its indoor tracking range is limited to a maximum of 4.0 meters.