High-speed camera frame rate and principle

High-speed cameras are different from the ordinary cameras we use every day. Its advantage is that we can choose different triggering methods to record the dynamic process of high-speed movement trajectories of objects, and capture people with its high frame rate. Momentary images that are difficult to observe with the naked eye are played back at slow or ultra-slow speeds. High-speed cameras cannot be used for long-term recording. The reason is that when a high-speed camera is working, it can generate a large amount of data, even several gigabytes, in a very short time, maybe a few seconds. If it is used for long-term recording, the amount of data will be very huge. Such a huge amount of data There is no high-speed camera in the world that can directly store data in such a short period of time. Generally, the memory of high-speed cameras is 16G, 32G, or 64G. Even if it can be stored, such a large amount of data will cause greater problems for subsequent data analysis.

The working principle of a high-speed camera is that the high-speed camera completes rapid and continuous sampling of high-speed moving targets in a very short period of time, and then when projected at a regular speed, the change process of the recorded target will be clear , slowly appeared in front of you. When a high-speed moving target is illuminated by natural light or artificial auxiliary lighting, reflected light will be produced, or the moving target itself will emit light. Part of this light passes through the high-speed camera lens and is focused on the image sensor inside the camera. The sensor controlled by the drive circuit will respond quickly to the light signal and complete the photoelectric conversion of the image. The image information is processed and transmitted to the computer, which then reads and displays the image. Shanghai WeChat hopes to help you.