Method for monitoring tower crane by utilizing high-speed photogrammetric technology

The invention provides a method for monitoring a tower crane by utilizing high-speed photogrammetric technology. The method comprises the following steps: acquiring images in a cargo beam movement process of a standard crane tower by using a high-speed camera so as to form a monitoring image; computing a relationship between the cargo beam movement speed and an image matrix change coefficient in the adjacent image interval, and establishing a mathematical model; acquiring the cargo beam movement speed and the theoretical image matrix change coefficient in the interval between the first image and the second image in the carbo beam movement process of the current crane tower; computing the actual image matrix change coefficients of the current two images; and giving an alarm to a user side when the difference between the theoretical image matrix change coefficient and the actual image matrix change coefficient is greater than a predetermined threshold. The cargo beam movement image is shot through the high-spee