高速视频频闪仪 High speed Videostroboscope
工作原理 Principle
视频频闪仪用于以慢动作形式可视化和记录振动及旋转现象 → 适用于振动台、试验台、难以触及的位置（内窥镜应用）以及大型或微型物体。这是一款易于使用的交钥匙系统，是高速摄像机的低成本替代方案。无需闪光灯，可在日光下使用。它支持自动监测，并提供丰富的分析工具。配合我们的特殊纳秒级光脉冲，可应用于高达100 kHz的频率以及高速旋转场景。
The Videostroboscope is used for visualization and recording of vibrations and rotations in slow-motion → on shaker, test benches, at non-accessible locations (endoscope-use) and on large or micro objects. It is an easy-touse turnkey system and provides a low cost alternative to high speed cameras. No need for flash lights permits day light use. It allows automatic monitoring and provides a wide range of analysis tools. In combination with our special nanosecond light pulses it can be applied for frequencies up to 100 kHz as well as for high speed rotations.
视频频闪仪相较于传统光频闪仪的优势 Advantages of Videostroboscope to the classical light Stroboscope
自动化监测：图像分析可通过检测物体位置、振动振幅或相位，实现测试装置或生产过程的自动控制（详情请咨询）。
录制：可录制并以数字形式存储连续序列或单帧图像。这些图像或序列（avi、jpg等格式）可进行进一步处理并纳入演示文稿。与传统高速摄像机相比，由于图像流可直接记录到计算机内存或硬盘中，因此可进行长时间连续记录。使用固态硬盘（SSD）时，即使在高帧率和高分辨率（例如VGA分辨率下超过200Hz）下也能实现。
微小物体：使用变焦镜头或显微镜可放大微小物体。
定量评估：图像包含用于比较物体或状态的信息。图像处理工具（如自动边缘检测或相关性分析）以及测量工具，可实现振动幅值的定量评估。无需暗室，不伤眼：与基于闪光灯的传统系统不同，视频频闪仪使用户能够在不伤眼的情况下工作，例如在日光下。高功率闪光灯对眼睛有害，仅允许短时间使用。
安全与图像传输：通过遥控版本（例如发动机试验台），观察者可与被测对象或危险区域保持空间隔离。对象与观察者之间的距离可达70米（使用光纤传输时无距离限制）。
环境适应性：可在极端条件下运行（例如气候试验箱）。
可及性：摄像头可安装在人眼难以触及的位置。提供适用于摄像头的内窥镜配件。
Automated monitoring: Image analysis permits automatic process control of test setups or in production via sensitivity to object location or vibration amplitudes or phase (please ask for details).
Recording: Sequences or single shots can be recorded and stored digitally. The images or sequences(avi, jpg etc.) can be further processed and included to presentations. Compared to conventional High Speed cameras this can be done over a very long period as the image streem is recored to the computer memory or hard-disks directly. Using solid state drives (SSD) this is possible with high frame rates an resolutions e. g. over 200Hz at VGA.
Micro-objects: Applying zoomlenses or microscopes permit magnification of small objects.
Quantitative evaluation: The images include information for comparison of objects or states. Image processing tools such as automated edge detection or correlation and measurement tools permit quantitative evaluation of vibration amplitudes. No need for dark rooms, no eyestrain: In opposite to conventional systems based on flash lights, the video-stroboscope enables the user to work without eyestrain e. g. under daylight. High power flash lights are harmful for the eyes allowing short application periods only.
Security and image transmission: The observer can be spatial separated from the object or danger zone by remote controlled versions (e. g. engine test stands). Object-observer distance up to 70m (unlimited using glass fibre).
Environmental: Operation is possible under extreme conditions (e .g. climatic chambers).
Accessibility: The cameras can be installed on locations with difficult access for the human eye. Endoscope accessories for cameras are available.