Adaptive ice detector circuit

Details Adaptive ice detector circuit Adaptive ice detector circuit

H - Electricity

05

B

H05B 1/02 (2006.01) B64D 15/20 (2006.01) G01N 25/18 (2006.01) G08B 19/02 (2006.01)

Patent

CA 2064028

ABSTRACT OF THE DISCLOSURE An ice detector circuit (60) controls heating of an ice detecting probe (62). The Circuit (60) generates an icing output as a function of a temperature output generated by the probe (62). A control circuit (114) cyclically controls a start time of the heating. A time measurement circuit (106) measure a warm-up time to a first temperature threshold below the melting temperature, and measuring a melting time to a second temperature above the melting temperature. A comparator (124) compares the melting time to a stored comparison parameter (122) adjusted by the warm-up time and provides the icing output.

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