Apparatus for and a method of monitoring the build-up of ice

Details Apparatus for and a method of monitoring the build-up of ice Apparatus for and a method of monitoring the build-up of ice

1981-04-17

1983-04-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

340583, G01W 100

Patent

active

043792278

ABSTRACT:
An apparatus for monitoring the build-up of ice on engine and plant parts encompasses a monitoring surface area and a reference surface area located on a part of such engine. There is provided a first means which heats the reference surface area to a temperature above the freezing point. A second means illuminates the reference surface area as well as the monitoring surface area. The light reflected from both these areas is led to a light receiver which emits signals which are applied to a fourth means. This fourth means determines the difference between the output signals of the light receiver and generates accordingly a control signal. This apparatus allows a safe detection of ice build-up independent from a soiling of the monitoring and/or reference surface areas.

REFERENCES:
patent: 4327286 (1982-04-01), Thoma

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