| 摘要 |
<p>An apparatus for detecting the presence of ice includes a sensor 101 including a radio-frequency transmission line 201, 202 providing a characteristic impedance, a source 103 coupled to the transmission line 201, 202 and operable to inject a wave into the transmission line201, 202, a summer 105, 106, 107 operable to create a standing wave, the standing wave including the sum of the injected wave and a reflected wave reflected by the end of the transmission line201, 202, the summer 105, 106, 107 being connected between the source 103 and the transmission line 201, 202, and a detector 104 for detecting the voltage of the standing wave. An embodiment may further include a comparator 112 operable to compare the detected voltage with reference data for determining the presence of ice contacting the sensor.</p> |
