LOW POWER ANTI-THEFT DEVICE OF A MOTORCYCLE FOR MINIMIZING POWER CONSUMPTION BY SWITCHING PROPERLY AN OPERATION MODE OF A MAIN CPU IN A CONTROL CIRCUIT ACCORDING TO ON/OFF POSITIONS OF A STARTING KEY

摘要

PURPOSE: A low power anti-theft device for a motorcycle is provided to warn persons who do not own the motorcycle of burglaries visually and auditorily and to check normal operation states of a starting key. CONSTITUTION: A low power anti-theft device for a motorcycle is composed of a theft sensing circuit unit(10) for detecting if shock or movement is generated from the motorcycle; a starting key sensing circuit unit(20) for detecting if the starting key of the motorcycle is operated and the starting key is operated normally; a lamp on/off circuit unit(30) for displaying visually a theft state of the motorcycle by turning on or off an outer turn signal lamp according to a control signal output correspondently to the detection operation of the theft sensing circuit unit; a siren generating circuit unit(40) for sounding a siren at the predetermined time intervals to warn auditorily the theft state of the motorcycle according to the control signal output correspondently to the detection operation of the theft sensing circuit unit; a starting cut-off circuit unit(50) for intercepting the starting of the motorcycle by controlling an ignition system according to the control signal output correspondently to the detection operations of the theft sensing circuit unit and the stating key sensing circuit unit; a super-low current warning lamp circuit unit(80) for executing a visual theft warning function with minimum power consumption according to a minimum power consumption operation mode of a control circuit unit(100); a wireless transmitting and receiving circuit unit(90) for sending and receiving various control signals for remote control on/off, warning-stop, and theft prevention; and the control circuit unit for executing a predetermined program by inputting a detection signal corresponding to the detection operation of the theft sensing circuit unit and/or starting key sensing circuit unit, outputting each anti-theft control signal to the lamp on/off circuit unit, the siren generating circuit unit, and the starting cut-off circuit unit, and performing a visual theft warning function and a remote control function by controlling the super-low current warning lamp circuit unit and the wireless transmitting and receiving circuit unit according to a minimum power consumption operation mode.