Drowsiness alarm system for a vehicle

Details Drowsiness alarm system for a vehicle Drowsiness alarm system for a vehicle

1981-10-05

1984-05-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

180272, G08B 2100

Patent

active

044504381

ABSTRACT:
According to the present invention there is provided a drowsiness alarm system which comprises: (a) a steering angle pulse generation circuit which produces first and second angle pulses at respective output terminals whenever the steering wheel is rotated clockwise and counterclockwise, respectively, through an angle equal to a predetermined angular increment; (b) curved road detection circuit responsive to the first and second steering pulses which counts the number of the first and second steering pulses separately and detects whether the vehicle travels on a curved road depending on whether the counted number of either of the first and second steering pulses reaches a first predetermined number within a predetermined period of time or depending on whether the difference of the counted number between the first and second steering angle pulses reaches a second predetermined number within the predetermined period of time; (c) a first counting circuit which counts the number of the first and second steering angle pulses within the predetermined period of time and outputs a first alarm signal whenever the counted number reaches a third predetermined number; (d) a second counting circuit responsive to the curved road detection circuit which counts the number of the first and second steering angle pulses and outputs a second alarm signal whenever the counted number reaches a fourth predetermined number greater than the third predetermined number; and (e) an alarm unit which produces an alarm to the driver in response to the first or second alarm signal.

REFERENCES:
patent: 3106981 (1963-10-01), Chakiris
patent: 3654599 (1972-04-01), Sepper
patent: 3794969 (1974-02-01), Klopfenstein et al.
patent: 3877541 (1975-04-01), Takeuchi et al.
patent: 3938612 (1976-02-01), Boudeville et al.
patent: 4005398 (1977-01-01), Inoue et al.
patent: 4007357 (1977-02-01), Yanagishima
patent: 4017843 (1977-04-01), Yanagishima
patent: 4031527 (1977-06-01), Yanagishima et al.
patent: 4058796 (1977-11-01), Oishi et al.
patent: 4104621 (1978-08-01), Yanagishima et al.
patent: 4278969 (1981-07-01), Woods

Affiliated with

Also associated with

Rating

Drowsiness alarm system for a vehicle does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drowsiness alarm system for a vehicle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drowsiness alarm system for a vehicle will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1480869