Patent ID: 6107922
Filing Date: 2000-08-22
Classification: G08B

Abstract:
A sleep or fatigue alarm for a driver of a vehicle comprising:a head set of U-shaped configuration for positioning the alarm about the driver's head;an alarm housing positioned on the head set;an electric circuit placed inside said housing, said circuit including a power source, an awakening means, a delay unit, first pair of contacts and a second pair of contacts connected in series to the first pair of contacts;a jaw position detecting means for activating the alarm in response to involuntary lowering of the driver's lower jaw, said means capable of closing off the first pair of contacts of the electrical circuit, anda tilt detection means for detecting the tilting motion of the driver's head and subsequently activating the alarm, said means capable of closing off the second pair of contacts of the electrical circuit,whereby the alarm being triggered after a predetermined delay in response to the sleep or fatigue condition of the driver as being detected from both the lowering of the driver's lower jaw and the tilting of the driver's head.