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测速是照相机生产中的一个重要环节,通过测速可以获得照相机快门帘幕间隙时间、帘幕运动速度、闪光同步时间以及帘幕回弹现象等各种参数,从而可以客观定量地评价照相机帘幕式快门的性能。用单片机对上述各项参数进行测量,具有许多优点:(1)控制多点光电数据的采集;(2)进行任意定时测量;(3)自动打印记录测试参数;(4)测量精确度高,为±40μs。
Speed measurement is an important part of the camera production, through the speed can be obtained camera shutter curtain gap time, the curtain speed, flash synchronization time and the curtain rebound phenomena and other parameters, which can objectively and quantitatively evaluate the camera curtain Shutter performance. The measurement of the above parameters by a single chip microcomputer has many advantages: (1) controlling the collection of multi-point photoelectric data; (2) making any timing measurement; (3) automatically printing and recording test parameters; (4) Is ± 40μs.