The Design and Development of the Automatic Trigger Device for the High-Speed Photography

Abstract

At present, there is a problem, which is inconvenient for people to record structure failure data, in some experimental process of special equipment. Focusing on the trigger method of high speed photography recording in the component strength experiment of special equipment, and choosing the feature of vibration in the situation that the strength of specimen is failure, we design two schemes, which are integration vibration switch basing on velocity and voltage comparator vibration switch basing on acceleration, according the design ideas that include analysis, design, specification and verification. Through the verification of the experiment, the method of voltage comparator vibration switch basing on acceleration is feasible, and the successful rate of auto-trigger can reach 100 percent in the situation of usual strength failure. The device has fine trigger stability and accuracy, can effectively solve the problem that manipulation has low rate of successful operation and reliability.