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
System for collecting computer application usage data of targeted application programs executed on a plurality of client devices
Brushless electric motor or generator in shell construction
Placental tissue grafts
Method of driving stereoscopic display apparatus and stereoscopic display apparatus
Self-assembled, micropatterned, and radio frequency (RF) shielded biocontainers and their uses for remote spatially controlled chemical delivery
Information-provision control method, information reproduction system, information-provision apparatus, information reproduction apparatus and information-presentation control program
Web-based royalty system and user interface
  Randomly Featured Patents
Decentered protective eyewear
Parametric emissions monitoring system having operating condition deviation feedback
Apparatus and method for generating images by producing light spots of different sizes
Semiconductor device structures and electronic devices including same hybrid conductive vias
Efficient method for obtaining usable parts from a partially good memory integrated circuit
Chloroaniline derivatives
Semiconductor integrated circuit device and method of manufacturing the same
(Co)polymerization process in aqueous emulsion of fluorinated olefinic monomers
Defragmentation of data storage pools
Golf tool collectors display rack