Design of synchronous projection data acquisition system for cone beam CT based on manipulator

In order to satisfy the requirement of automatic nondestructive testing of micro defects for the casting and forging components whose shape and curvature are complex (such as aircraft engine blades), we develop a CT testing system based on six degrees of freedom industrial manipulator using computerized tomography scan of detection method. The measurement system is mainly composed of three major parts: manipulator, flat panel detector and high energy X-ray source. We carry out further analysis for the purpose of the coordinated control system and the overall design scheme based on the analysis of the basic composition and working mechanism of each unit introduced in this paper. To meet the data synchronization acquisition in every angle for the testing work piece, we design the bottom program, hardware circuit and host program to realize coordination and orderly operation of the whole detection system based on the analysis above.