Road surface ice detector and method for vehicles

Details Road surface ice detector and method for vehicles Road surface ice detector and method for vehicles

1979-01-17

1981-06-16

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

250339, 250341, 307 10R, 340 22, 340 32, 340 52R, G01J 334, G08B 2100

Patent

active

042740916

ABSTRACT:
Method and apparatus for detecting from vehicles the presence of ice on roads comprising means for generating a light pulse train whose amplitude is modulated in the presence of ice on the travelling surface, means for detecting modulation of the pulse train, and means for generating an indicating signal when a modulating signal is detected.

REFERENCES:
patent: 2074251 (1937-03-01), Braun
patent: 2816233 (1957-12-01), Krueger
patent: 3045223 (1962-07-01), Kapany et al.
patent: 3201750 (1965-08-01), Morin
patent: 3471698 (1969-10-01), Mausteller et al.
patent: 3540025 (1970-11-01), Levin et al.
patent: 3735136 (1973-05-01), Flint

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