Elevators are not only daily transportation tools but also critical nodes for evacuation and emergency communication. Safety systems must provide reliable environmental monitoring, event verification, and multi-party connectivity under both normal and emergency conditions.
Traditional solutions are constrained by cabin size, variable lighting, and installation limitations, making fully blind-spot-free visual perception difficult. This study explores integration of a camera module with a 230° ultra-wide-angle lens and short focal length into elevator safety communication systems. Single-point deployment achieves complete cabin coverage, improving safety performance, emergency response, and compliance with regulatory requirements for monitoring, rescue, and data retention.
Elevator safety systems must ensure rapid and accurate situational awareness during emergencies and provide ongoing monitoring under normal operation. Challenges include:
Limited installation positions due to compact cabin space.
Variable lighting and reflective surfaces from metal walls.
High reliability demands and compliance with industry safety standards.
Using multiple cameras can expand coverage but increases complexity, wiring, synchronization challenges, and potential failure points. Therefore, a single-point wide-angle module with stable imaging under varying conditions is essential for efficient, reliable perception.
Ultra-Wide-Angle Coverage: A 1.44mm short focal length lens provides 230° horizontal FOV, capturing door areas, side walls, and rear walls in a single frame, eliminating blind spots.
High Clarity and Adaptability: The sensor is optimized for varying cabin lighting. Focus ranges from 30cm (for panels and emergency buttons) to infinity (for distant corners). Distortion is controlled within 19.2% and correctable through software.
Compact and Robust Design: M12x0.5P threaded interface, steel base, and flexible PCB allow rapid installation in confined ceilings. Optimized voltage and power consumption support operation during main power interruptions.
Embedded Platform Compatibility: Supports MIPI CSI-2 interfaces, enabling integration with single-board computers and prototyping on systems such as Raspberry Pi camera modules, suitable for testing elevator safety solutions.
Integration enhances both emergency response and routine safety management:
Emergency Verification: Real-time wide-angle video confirms cabin occupancy, passenger condition, and positions, enabling precise rescue planning. Recorded footage supports post-event review and regulatory compliance.
Routine Monitoring and Analytics: Continuous observation allows automated people counting, detection of falls or altercations, and identification of abandoned items. Single-camera monitoring reduces computational demands and latency.
Reliability and Integration: Industrial-grade design ensures long-term operation under temperature, vibration, and power variation constraints. Video data can integrate with building safety networks, fire alarms, and cloud platforms.
The integration of an ultra-wide-angle, short focal length camera module provides comprehensive, blind-spot-free monitoring in elevator safety systems. This enhances emergency verification, routine safety oversight, and compliance reporting.
Visual modules like this are redefining elevator safety systems, turning them from passive monitoring terminals into intelligent, proactive nodes that provide early warnings, rapid response, and reliable operational data, ensuring passenger safety in modern urban environments.
