A warning system is provided, comprising: a warning signal source (12); a piezo-electric transducer (32) deformable by a user; a rechargeable battery (26), connected to receive an electric current generated due to deformation of the piezo-electric transducer (32) to charge the battery (26); and a controller (22) arranged to sense receipt of an electric current from the piezo-electric transducer (32), indicative of the presence of a user, and to trigger activation of the warning signal source (12). In this way, the system is able to use the piezo-electric transducers (32) both as a source of electric current to charge the battery (26) and as a detector of the presence of a user for triggering activation of the warning signal source (12). A solar panel (30) may also be provided both to charge the battery (26) and to enable detection by the controller (22) of ambient light levels. Activation of the warning signal source (12) may be disabled by the controller (22) during higher ambient light levels.
WARNING SYSTEM, METHOD OF CONTROLLING AND CONTROLLER
WARNSYSTEM, VERFAHREN ZUR STEUERUNG UND STEUERGERÄT
SYSTÈME D'AVERTISSEMENT, PROCÉDÉ DE COMMANDE ET ORGANE DE COMMANDE
2019-03-27
Patent
Electronic Resource
English
IPC: | E01F ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE , Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl. / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G08B SIGNALLING OR CALLING SYSTEMS , Signalisier- oder Rufsysteme |
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