Resources Contact Us Home
Alarm system for preventing an automotive vehicle driver from dozing at the wheel

Image Number 6 for United States Patent #4509040.

An alarm system for a vehicle driver to prevent from dozing at wheel. The system includes structure for detecting drowsiness of the driver on a basis of abnormal steering change repetitions for a fixed period of time in a monotonous driving state defined, for example, as the transmission gear position being maintained at an overdrive or top position. The alarm system produces an alarm to the driver to prevent the driver from increasing the state of drowsiness. The drowsiness alarm system according to the present invention comprises a steering signal generator which generates a signal corresponding to the change of an angle through which the steering wheel is rotated, a monotonous driving-state detector which detects and signals that the vehicle is traveling in a monotonous driving state, a discriminator which compares the change of steering signal level from said steering signal generator for a fixed period of time with a reference value, and an alarm pulse generator which outputs an alarm pulse into an alarm circuit producing an alarm in response to the input alarm pulse when the output signal from the discriminator indicating the change of steering signal for the fixed period of time exceed the reference voltage.

  Recently Added Patents
Adaptive take-off strips for smoothing ink consumption
Multi-level integrated circuit, device and method for modeling multi-level integrated circuits
Method of creating exercise routes for a user and related personal navigation device
Modular utility rack
Method and system for leveraging the power of one's social-network in an online marketplace
Breathing mask
Driving apparatus having an optical sensor and a thermal sensor for thermal and aging compensation of backlight module and driving method of backlight module
  Randomly Featured Patents
High performance antenna for hand-held and portable equipment
Methods and compositions for the treatment of neurological disease
Method and architectural model for handling a pool of hardware resources
Suspension and reinstatement of reference handles
Image sensor
Cutting machine particulary for leather and similar materials
Suction pipe for a suction cleaner
Electromagnetic heating devices, particularly for ram air turbines
Concord solar light
Out-of-plane deflection MEMS actuator for projectile control surfaces