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测试仪器:VDA(Video-dlimension—analyser)电视尺寸分析仪(自行设计)。 原理:VDA是一种非接触式尺寸测试系统。它利用摄像机的光电转换作用,把平面上的图像,按照一定的规律变换成为时间坐标上的电信号,经过复合和放大,在摄像机输出端得到对应的复合电视信号;然后对电视信号进行一定程序的信号处理,再作计数显示、处理和打印,既可通过荧光屏直接观察,又可打印出实际的数据。 方法:健康大白鼠(体重200～250g),
Test equipment: VDA (Video-dlimension-analyzer) TV size analyzer (self-designed). Principle: VDA is a non-contact size measurement system. It uses the photoelectric conversion function of the camera to transform the image on the plane into an electrical signal on the time coordinate according to a certain rule. After compounding and amplifying, the corresponding composite television signal is obtained at the output of the video camera; and then the television signal is programmed Of the signal processing, and then count display, processing and printing, either through direct observation of the screen, but also print out the actual data. Methods: Healthy rats (weight 200 ~ 250g),