An apparatus 10 comprises: a sensor 110 configured to sense a person P at a location L; a detector 120 configured to detect a current hazard H associated with the location L; a directional sound device 130 for projecting sound towards the sensed person P at the location L; and a controller 140 configured to control the directional sound device 130 to project sound S towards the sensed person P, based on the detected hazard H. The sensor 110 may be a proximity sensor or motion detector. The directional sound device 130 may modulate an audible warning onto a high frequency ultrasound, and may be steerable and/or moveable. The directional sound device 130 may be an Acoustic Hailing Device (AHD) such as a Long Range Acoustic Device (LRAD). The apparatus 10 may comprise a plurality of directional sound devices whereby the controller 140 may select and control one directional sound device therefrom to project sound towards the sensed person. The apparatus 10 may further comprise an identifier for identifying the person P. The identity of the person P may be established via facial recognition or an RFID tag. The apparatus may be a safety barrier.
Sound safety barrier
2023-08-02
Patent
Electronic Resource
English
IPC: | G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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