Patent ID: 7649447
Filing Date: 2010-01-19
Classification: B60Q,B62J

Abstract:
1. A wireless bike brake light comprising: a power; a lighting device that receives commands to give off lights at a mode as appropriate; an accelerometer that is MEMS-structured, chip-shaped and employed to detect linear deceleration conditions of the bike; a control circuits unit that is electrically connected to the said accelerometer, power and lighting device, and employed to process signals sent from the said accelerometer and then gives appropriate commands to the said lighting device; its features mainly comprises: the said control circuits unit has a low-pass signal filtering function that filters high-frequency voltage signals coming from the said accelerometer, and can judge if the bike is still or in motion; and based on detection of vibration from the said accelerometer, moreover the said control circuits unit has an auto power-off function that activates when the applied bike stays still for a preset period of time.