Åpningradar

Åpningradar refers to systems that use radar technology to detect the presence or absence of an opening, such as a door, hatch, window, or access panel. The term is primarily used in Norwegian-language technical contexts and is not widely standardized; it can denote several sensor concepts that monitor openings rather than a single, defined product.

Typically these systems employ microwave or millimeter-wave radars, often as FMCW radars, to sense movements or changes in reflectivity around an opening. Signal processing extracts features such as entry or exit motion, lid angles, or gap changes. They are designed to operate in environments where optical sensors are unreliable due to dust, darkness, or occlusion. Ranges can be from a few centimeters to several meters, with resolutions sufficient to detect small openings in industrial applications. Some implementations combine radar with other sensors, such as infrared or cameras, to improve reliability while maintaining privacy by avoiding detailed imaging.

Applications include smart buildings for security and access control, industrial automation for monitoring container lids or machine guards, and safety systems that ensure access panels remain closed during operation. In the security domain, åpningradar can complement door sensors to detect forced entry attempts or openings in critical infrastructure. The term remains relatively niche, and practical deployment hinges on cost, robustness to interference, and privacy considerations.

See also: radar sensing, door sensor, industrial automation.