Jib length correction, detection, working condition identification system and method, and crane

The invention relates to the technical field of working condition identification, and discloses a jib length correction system and method, detection system and method, working condition identificationsystem and method and a five-section jib rope row crane. The correction system comprises a state detection device, wherein the state detection device is used for performing the following operations according to the working state of a first oil cylinder or a second oil cylinder, specifically, under the condition that a first oil cylinder works, whether the first type of jib is in a fully extened or fully contracted state is detected; or under the condition that a second oil cylinder works, whether the second type of jib is in a fully extended or fully retracted state is detected, and a correction device is used for correcting calibration parameters of the jib length of the first type jib or the second type jib when the first type jib or the second type jib is in a fully extended or fully retracted state. According