Crystal Instruments Corporation

State Grid Corporation of China

China Electric Power Research Institute

State Grid Zhejiang Electric Power Company Limited

State Grid Smart Grid Research Institute

State Grid Shaoxing Power Supply Company

Hongjian Gao

Yong Zhao

Yang Lu

James Q Zhuge

Tao Zhao

Weijie Zhao

Jianqi Li

Bing Yang

Feng Tao

Yihao Liu

Ping Ma

Chunyan An

Weilin Liu

Guangbin Chu

A shaker test apparatus is provided along with a method of collecting and processing images, wherein a shaker table is driving the device under test by a vibration controller at a known vibration frequency and period, wherein a device under test obtains a steady-state vibration characteristic of that excitation frequency when mounted on the shaker table. While the device under test is being excited, a trigger signal controller triggers a camera to capture a series of still image frames at a regular sampling frequency that is less than the vibration frequency (under-sampling), and a timer associated with the camera records a timestamp of an image capture time for each image frame. A computer processor uses the timestamps to remap the order of the image frames, shifting each frame's capture time backwards by a specified multiple of vibration periods in order to correctly represent a single vibration period beginning with an earliest captured image.

Vibration image acquisition and processing

Growing community of inventors

Linhai, China

Hongjian Gao