Pipeline elbow trend parameter measurement method for detectors in pipeline

The invention discloses a pipeline elbow trend parameter measurement method for detectors in a pipeline, and belongs to the technical field of non-destructive testing. The pipeline elbow trend parameter measurement method comprises the following methods; obtaining pipeline elbow information by applying a gyroscope sensor and an acceleration sensor in intelligent testing of a buried long-distance pipeline, wherein the gyroscope sensor and the acceleration sensor are respectively arranged on three planes which are formed by x, y and z coordinate axles and perpendicular to one another; outputting angular speed change rate and acceleration information in the directions of the x axis which is the advancing direction of the pipeline medium, the y axis which is perpendicular to the direction of the pipeline and horizontally leftward and the z axis which is perpendicular to the xy plane and upward; computing according to the angular speed change rate and the acceleration information to obtain the curvature radii of the pipeline elbows, the elbow angles and the elbow deflecting direction information. The pipeline elbow trend parameter measurement method is capable of providing related reference basis for the integrity management of pipelines without increasing the testing cost.