CCD asynchronous reset trigger system based on MC9S128

GUO Yu， WU Kaihua
(College of Life Information Science and Instrument Engineering，Hangzhou Dianzi University，Hangzhou 310018，China)

Abstract: In order to solve the question of acquisition time error in online measurement and ensure the quality of the workpiece surface image acquisition, a trigger sequence based on CCD asynchronous reset was designed,and a CCD asynchronous reset trigger system with strong versatility which based on the Freescale 16bit MC9S128 was also proposed. The sequence was generated by the position switch, and the camera was asynchronous triggered. 0.1 ms accurate delay precision was reached to ensure the image was acquired after the object had got into the predefined location. Thus the acquisition of workpiece which on motion state was achieved. The experimental result indicates that the trigger system which based on the Freescale 16bit MC9S128  has broad adaptability, and ensures high positioning accuracy on realtime image acquisition.
Key words: asynchronous reset；MC9S128；chargecoupled device(CCD) ；image acquisition