Arousal level judging apparatus and method

Details Arousal level judging apparatus and method Arousal level judging apparatus and method

1988-12-08

1990-05-22

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

128734, 340576, G08B 2100

Patent

active

049280902

ABSTRACT:
An arousal level judging apparatus has a skin potential level (SPL) detection device, a potential change detection device for detecting occurrance and convergence of a pulse of the signal from the SPL detection device, the pulse being caused by skin potential response (SPR), a storing device for storing the SPL value as a reference value, and a comparator for comparing SPL with the reference value to detect a SPL decrease to detect an arousal level decrease of a driver, etc. The reference value is renewed at every occurrance of SPR. When the SPL value indicates that the arousal level of the driver has been decreased, an alarm is caused to wake the driver up.

REFERENCES:
patent: 4088125 (1978-05-01), Forgione et al.
patent: 4725824 (1988-02-01), Yoshioka
"Feedback Control of the Level of Arousal Using Skin Potential Level as an Index", by Chiaki Nishimura et al.; Ergonomics 1985, vol. 28, No. 6, pp. 905-913.
"Estimation of the Level of Arousal by Skin Potential and its Application to Sleep Control", by Chiaki Nishimura et al.; MBE 83-27; pp. 53-60.
"Evaulation of the Arousal Level in Motorcar Driving Using Skin Potential Level I: Changes in Skin Potential Level Under Various Driving Conditions", by Chiaki Nishimura et al.; from Ningen Kogaku, vol. 23, No. 2('87), pp. 103-110.
"Evaluation of the Arousal Level in Motor Driving Using Skin Potential Level II: Its Effectiveness Compared with Other Electrophysiological Quantities", by Chiaki Nishimura et al.; from Ningen Kogaku, vol. 23, No. 2('87); pp. 111-118.
"Biofeedback of Skin Potential Level for Sleep Control", by Chiaki Nishimura et al.; from Kenkyu, vol. 18, No. 5 (Sep. 1980); pp. 327-333.
"Feedback Control of the Level of Arousal in Motor Driving", by Chiaki Nishimura et al.; from Biofeedback Kenkyu (1984).

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