Safety Armband with Sensor Light

Abstract

This project presents the development of a Safety Armband with Sensor Light, a wearable safety device designed to enhance worker awareness in hazardous environments. Many workplaces such as industrial areas, construction zones, airports, and manufacturing facilities involve high-risk machinery, rotating equipment, and restricted areas that may not always be clearly visible to workers. Traditional safety systems that rely only on visual or audible warnings are often ineffective in noisy, dim, or fast-paced environments, causing workers to unintentionally step into danger zones. To address this issue, this project introduces a dual-alert wearable system that integrates a proximity sensor, warning safety light, and vibration motor within a compact armband. When a worker gets too close to a potentially dangerous area, the system automatically activates the safety light and triggers vibration feedback to the user’s arm, ensuring immediate and direct awareness. This approach provides a more reliable method of alerting workers, as it does not depend on environmental lighting or noise conditions. The device is enclosed in a lightweight 3D-printed armband casing and powered externally using a portable power bank, allowing longer usage time and easy recharging without modifying the internal circuitry. Although demonstrated using a simulated setup, this system can be applied across various industries, including those involving high-speed industrial fans, factory blowers, rotating shafts, or moving machinery. Overall, this project aims to improve workplace safety through a low-cost, efficient, and user-friendly wearable alert system.