Smoke Detector

Project Type: Integration, Wafer Safety
Scope: Software, Electrical, and Mechanical Design

Industry: Semiconductor, Automation, Wafer Handling,
Customer: Samsung

Samsung requested a solution that would allow a wafer handler system to detect fire or dense smoke originating inside the Power Distribution Unit (PDU). The goal was to protect wafers by automatically stopping robot operation and closing the FOUP in the event of a smoke event, since exposure could permanently damage the wafers.

From a mechanical engineering standpoint, the project focused on integrating a smoke‑detection system into the PDU. The work included selecting an appropriate smoke detector, alarm, and strobe; designing custom sheet‑metal components to support the installation; and incorporating a sampling method that draws air from the PDU to enable early smoke detection. A custom bracket was also developed to securely route and support the air‑suction hose within the unit.

The electrical work included building new wiring harnesses and connectors to power the smoke detector, alarm, and strobe, as well as integrating an I/O cable that connects to the existing I/O board.

For the software portion, new code was developed to monitor the dedicated smoke‑detector signal. When triggered, the system initiates a tool e‑stop, halts robot operation, and displays a new on‑screen alarm message indicating “Smoke Triggered.”

The customer received fully tested hardware, an integrated software upgrade, and a complete installation procedure — delivering a ready‑to‑deploy safety enhancement for the wafer handler system.