METHOD AND SYSTEM FOR DETECTING ICE

A system for detecting frost on a surface (18) comprises a resistive element (12) in contact with the surface (18), a current generator (22) connected to the resistive element (12), a sensor (28) measuring the temperature of the resistive element (12), and a calculation unit (38) capable of determin...

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Bibliographische Detailangaben
1. Verfasser:	MEMPONTEIL, Alain
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIRCRAFT ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT AVIATION BLASTING COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS COSMONAUTICS EQUIPMENT FOR FITTING IN OR TO AIRCRAFT FLYING SUITS HEAT PUMP SYSTEMS HEATING ICE-BOXES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PARACHUTES PERFORMING OPERATIONS REFRIGERATION OR COOLING REFRIGERATORS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A system for detecting frost on a surface (18) comprises a resistive element (12) in contact with the surface (18), a current generator (22) connected to the resistive element (12), a sensor (28) measuring the temperature of the resistive element (12), and a calculation unit (38) capable of determining the presence of ice on the surface (18) depending on the measurement delivered by the sensor. The generator (22) injects an electrical current into the element (12) in order to bring same to a temperature higher than the melting temperature of the ice. The calculation unit (38) determines a difference between the temperature measured during the heating of the element and an exponential growth function, and detects frost on the surface (18) if the difference is greater than a predefined detection threshold.