| 摘要 |
A system determines a position of one or more objects relative to a detection surface. An illumination source is located at a first fixed position relative to the detection surface, and configured to illuminate an adjacent coordinate space. Two or more single-pixel optical sensors are located at fixed positions relative to the detection surface such that each point of the illuminated coordinate space is within a field of view of at least two single-pixel optical sensors. Each single-pixel optical sensor detects illumination reflected off an object within the coordinate space, and outputs information useable to assess a time-of-flight of the detected reflected illumination. A controller assesses a radial distance between each single-pixel sensor and the object based at least in part on the time-of-flight of the detected reflected illumination, and determines a position of the object in the coordinate space based at least in part on the radial distances. |
