Abstract: A detecting device for detecting icing by an image includes an image acquiring system (1-A) and an image processing system (2-A). The image acquiring system (1-A) can acquire an image of an object's surface. The image processing system (2-A) can analyze the image and obtain an icing condition of the object's surface. The detecting device is simple and reliable. It can identify the category of the icing effectively. So, it can improve the accurateness of the icing detection significantly and can accomplish the detection of the object's whole surface. Furthermore, it can detect an icing condition of a super-cooled large droplet. A method for detecting an icing condition of an object's surface using the detecting device is also provided.

Abstract: An icing detector probe includes three sections arranged sequentially along the direction of air flow, namely, a first section, a second section and a third section. The shape of the outer surface of the first section is suitable for collecting droplets in the air flow. The shape of the outer surface of the second section is suitable for full decelerating and releasing latent heat of large droplets during their movements. The outer surface of the third section is suitable for icing of large droplets. The probe detects icing by distinguishing and identify large droplets icing. The probe effectively detects types of traditional icing, thus being helpful for exact detection of icing thickness. An icing detector including said icing detector probe is also provided.