2 results about "Teeth counted" patented technology

A camshaft tone wheel, system, and method are provided for determining a rotational position of an internal combustion engine. Sensors detect unique features positioned around the camshaft tone wheel in conjunction with a tooth count on a crankshaft tone wheel, or in conjunction with elapsed time for passage of the unique features during rotation of the camshaft tone wheel, to resolve engine position and enable accurately timed combustion.

The application provides a tooth recognition and classification method, an electronic device and a storage medium. The tooth recognition and classification method first samples segmented tooth data and pre-processes each sampling point to obtain spatial three-dimensional coordinates of sampling points corresponding to all teeth; then, for each tooth, according to a tooth region where the current tooth is located and the spatial three-dimensional coordinates of the sampling points corresponding to the current tooth, all sampling points belonging to the current tooth are cropped to obtain a cropped block corresponding to the current tooth; next, a preset tooth category query vector and all cropped blocks are input into a trained tooth category recognition model to obtain a preliminary recognition result of tooth categories of all teeth; finally, the preliminary recognition result of the tooth categories is post-processed by a bipartite graph matching method to obtain a final recognition result of tooth categories of all teeth. The application realizes automatic recognition of tooth categories, has high recognition accuracy and good generalization.