Arm support dynamic parameter detection method and system

The invention discloses an arm support dynamic parameter detection method and a arm support dynamic parameter detection system. The method comprises the following steps: image acquisition, wherein a left camera and a right camera mounted at the arm tail part of the arm support are used for acquiring images of an cooperation mark at the arm head part of the of the arm support; coordinate calculation, receiving the image and extracting a detection point from the image, and calculating the three dimensional coordinates of the detection point in the left-camera coordinate system and a right-camera coordinate system; side bending confirmation, confirming the side bending value of the arm support according to the x-axis coordinates of the detection point in the left-camera coordinate system and the right-camera coordinate system. The method can perform dynamic detection and real-time monitoring for the variation of the side bending of the arm support in moving, so as to improve the safety of crane operation, and to