Halma has patented an elevator door sensor arrangement that includes a position sensor, an auxiliary sensor, and a door sensor controller. The sensors monitor for objects outside the elevator car, adjusting the sensing region based on the door configuration. This innovation enhances safety and efficiency in elevator operations. GlobalData’s report on Halma gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Halma, was a key innovation area identified from patents. Halma's grant share as of February 2024 was 55%. Grant share is based on the ratio of number of grants to total number of patents.
Elevator door sensor arrangement with adjustable sensing region
The granted patent (Publication Number: US11912531B2) discloses an elevator door sensor arrangement that includes a position sensor to determine the configuration of an elevator door, an auxiliary sensor to monitor for objects approaching the elevator car, and a door sensor controller to indicate when an object is sensed. The depth of the sensing region is adjusted based on the door configuration, with the sensing region location moving to center with the door aperture as it changes. The position sensor can be a light curtain detecting obstructions, while the auxiliary sensor can be a radar sensor, specifically a microwave radar sensor. The sensing region alteration is achieved through predetermined sensing zones, including overlapping zones, with the selection based on the door aperture width.
Furthermore, the patent also covers an elevator car and system incorporating the described elevator door sensor arrangement. In the elevator car, both the position sensor and auxiliary sensor are mounted for movement within the elevator shaft. The system includes an elevator car with the same sensor arrangement, where the depth of the sensing region is adjusted based on the door configuration. The auxiliary sensor is also mounted for movement within the elevator shaft, ensuring comprehensive monitoring of objects approaching the elevator car. Overall, the patent introduces an innovative elevator door sensor system that adapts the sensing region based on the door configuration, enhancing safety and efficiency in elevator operations.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
