| 摘要 |
An obstacle detection method and system, particularly for car parking systems comprising emitting ultrasound signals at a plurality of sensors (2), receiving echo signals returned by at least one obstacle (30), performing a parametric evaluation of the received signals, determining, for each sensor (2), the distance between the sensor (2) and an obstacle (30) detected by it, associating with each sensor (2) a value of the distance from the obstacle (30) detected by it; determining a value corresponding to the minimum detected distance and replacing it with the sum value between a minimum distance and a priority threshold value; assigning to the sensor (2) that detected the minimum distance a priority status; and defining a sensor polling cycle that polls more frequently a priority status sensor than non-prioritized sensors. |
