The present disclosure relates to an alarm circuit (130) comprising an alarm mechanism with a wireless communication interface and a sensor for sensing a relative displacement of a frame (105) mounted on ground engaging wheels from a first position; the sensor being in communication with the alarm mechanism for activating the alarm mechanism if the frame is displaced beyond a predetermined threshold. The alarm circuit is accommodated in a housing configured to be mounted internally within the frame (105). The alarm circuit further comprises a transmission mechanism incorporated in to the configuration of the frame, for overcoming a Faraday effect generated by the configuration of the frame. The transmission mechanism comprises a conducting material located at least partially externally of an interior volume of the frame.
A BICYCLE SECURITY SYSTEM
FAHRRAD SICHERUNGS SYSTEM
SYSTÈME DE SÉCURITÉ DE VÉLO
2019-04-17
Patent
Electronic Resource
English
IPC: | B62H CYCLE STANDS , Fahrrad- oder Motorradständer |