| 摘要 |
<p>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) measures 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.</p> |
