[经验]

带宽和高速工业检测

2018-10-18 09:16:18

853 安森美带宽 CMOS

更快。
似乎每个人都在寻找让事情变得更快的方法。
汽车，电子邮件，决策 - 时间是如此宝贵的商品，我们经常花费数月时间寻找节省分钟和秒钟的方法。
但作为一项规则，如果为了达到目标而牺牲质量，那么走得更快就无济于事。
如果消息提前到达但没有其全部内容，则该消息可能会令人困惑，如果快速但错误的话，决策可能是灾难性的。
工业检测系统也不例外，因为提高其运行速度可直接提高效率和生产率。
但对于视觉系统而言，它通常无助于单独提高速度（或帧速率） - 通常需要的是在不牺牲图像质量的情况下增加带宽，以便可以捕获相同或更高分辨率的图像。
更快的速度。
安森美半导体在我们的PYTHON系列CMOS图像传感器设计中认识到了这一点，这是一系列9个器件，将高质量成像与高速捕获相结合。
该系列中最小的成员，VGA分辨率PYTHON 300，可以高达每秒815帧的速度捕获图像，从而在检测应用中实现极高的速度。
但最高分辨率的成员，即新宣布的PYTHON 25k，仅以“每秒80帧”的速度成像 - 实际上是VGA设备数据的8倍。
换句话说，VGA部分使用单个USB 3.0连接（2.5 Gb /秒）提供的一半带宽，而PYTHON 25k则需要相当于两个USB 3.1或两个10GigE连接（超过20 Gb /秒）来支持
全面运作。
此外，我们将PYTHON系列基于可扩展平台，允许相机制造商利用单一相机设计来支持多种设备，有助于简化供应物流并加快新相机设计的上市时间 - 这也有助于加快速度。
因为有时候，能够走得更快才是真正重要的。

以上来自于谷歌翻译

以下为原文

Faster.  Everyone, it seems, is always looking for ways to make things go faster.  Cars, e-mails, decisions – time is such a precious commodity that we often spend months and years looking for ways to save minutes and seconds.  But as a rule, going faster doesn’t help if you sacrifice quality in order to get there.  A message can be confusing if it arrives early but without all of its content, and a decision can be disastrous if made quickly but wrong.
Industrial inspection systems are no exception, as increasing the speed at which they operate leads directly to improvements in efficiency and productivity.  But for a vision system, it often doesn’t help to increase speed (or frame rate) alone – what’s often needed is an increase in bandwidth without sacrificing image quality, so that images of the same – or higher – resolution can be captured at a faster rate.
ON Semiconductor recognized this in the design of our PYTHON family of CMOS Image Sensors, a family of nine devices that combine high quality imaging with high speed capture.  The smallest member of this family, the VGA resolution PYTHON 300, captures images at up to 815 frames per second to enable very high speed in inspection applications.  But the highest resolution member, the newly announced PYTHON 25k, images at “only” 80 frames per second – which actually represents 8 times more data than the VGA device.  Said another way, the VGA part uses half of the bandwidth available from a single USB 3.0 connection (2.5 Gb/sec), while the PYTHON 25k requires the equivalent of two USB 3.1 or two 10GigE connections (over 20 Gb/sec) to support its full operation.

In addition, we based the PYTHON family on a scalable platform that allows camera manufacturers to leverage a single camera design to support multiple devices, helping to simplify supply logistics and speed time to market for new camera designs – which also helps make things faster.
Because sometimes, being able to go faster is what really matters.