Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Cosmetic or pharmaceutical peptides containing uncoded amino acids and their use in the treatment and/or care of the skin, mucous membranes, or scalp
Systems, methods and apparatus for payment processing
Mobile communication terminal provided with handsfree function and controlling method thereof
Cycloalkylamine substituted isoquinoline derivatives
Decoration holder
Flame retardant thermoplastic elastomers
Organic dual-gate memory and method for producing same
  Randomly Featured Patents
Method for reducing corrosion in a bypass system
Cup engaging actuation lever for a beverage dispensing head
Low-pressure gas discharge lamp with gas filling containing tin
Laterally adjustable fastening assembly
Tympanic thermometer
Reconfigurable integrated circuit and method for increasing performance of a reconfigurable integrated circuit
Method of manufacturing semiconductor device
Gigabit ethernet transceiver with analog front end
Methods and compositions for efficient base calling in sequencing reactions
Broncoscope