Smoking detection system and method for workers on construction site

The invention discloses a construction site worker smoking detection system, and the system comprises an image obtaining module which is used for obtaining construction site image data; the preprocessing module is used for preprocessing the acquired image data; the learning module is used for importing the preprocessed image data into an improved YOLOv5s model and monitoring a smoking target on a construction site; the recording module is used for recording and storing the monitored smoking target image and counting the number of times; and the computer terminal is installed in a monitoring room, communicates with the image acquisition module through a network cable, and is used for building an improved YOLOv5s model. The invention also discloses a construction site worker smoking detection method. The method comprises the following steps: S1, collecting a construction site video through the arranged camera; and S2, establishing and training an improved YOLOv5s model, and detecting the smoking condition of th