An electronic directional indicator includes a microcontroller in electronic communication with an electronic compass, an electronic motion-detecting module and at least one light source that is controllably illuminable. A battery life of the electronic directional indicator is managed by monitoring the electronic motion-detecting module for motion within pre-defined time periods and reducing power to electronic components accordingly. The electronic directional indicator can be placed on the face shield portion of a self-contained breathing apparatus face mask to provide a constant source of orientation for firefighters in reduced- or zero-visibility environments.
Directional indicator for protective face masks
2019-09-24
Patent
Elektronische Ressource
Englisch
IPC: | A62B DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING , Vorrichtungen, Geräte oder Verfahren zur Lebensrettung / A42B Hüte , HATS / B63C LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS , Zuwasserlassen, Trockenstellen, Docken oder Bergen von Schiffen / G01C Messen von Entfernungen, Höhen, Neigungen oder Richtungen , MEASURING DISTANCES, LEVELS OR BEARINGS / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme |