Future industrial cameras replace traditional analog cameras

An analog camera is a camera whose output signal is an analog signal. Its structure is simple and its price is cheap. It has great limitations in resolution (number of TV lines) and frame rate, and the noise is also relatively large. Industrial cameras, also commonly known as video cameras, are a key component in machine vision systems. Their most essential function is to convert optical signals into orderly electrical signals. Choosing an appropriate camera is also an important step in the design of a machine vision system. The camera not only directly determines the resolution and quality of the images collected, but is also directly related to the operating mode of the entire system.

With the development of science and technology and the continuous introduction of new technologies, analog cameras should no longer be able to adapt to the development of industrial modernization. For digital cameras, the video signal arrives at the output device almost identical to when it leaves the camera, providing higher resolution, faster frame rates, less noise and more features. If the digital camera used has an IEEE1394 (FireWire) interface or a USB interface, it does not need an image capture card and is directly connected to the computer. It is more convenient and can provide more performance advantages.

1. The manual shutter time is very short and can capture fast-moving objects.
   For example, if you attach a business card to the blades of an electric fan, rotate it at maximum speed, and then capture an image with an industrial camera, you can still clearly identify the fonts on the business card. It is impossible to achieve this effect when shooting with ordinary cameras.
2. The image sensor is progressive scanning, while the image sensor of a general camera is interlaced, or even scanned every three lines.
   Progressive scanning image sensors are more difficult to produce, with low yields and low shipments. Only a few companies in the world, such as Dalsa and Sony, can provide such products, and they are expensive. The price of a million-level progressive scan CCD ranges from RMB 4,000 to RMB 30,000. Only by using a progressive scan image sensor can it be possible to clearly capture fast-moving objects. For example, the AFT-VD high-speed industrial digital camera and AFT-VS series 1394 interface CCD industrial camera developed and produced by Afit Optoelectronics are very good in terms of price and quality.
3. The shooting speed is much higher than that of ordinary cameras.
   Industrial cameras can take from ten to hundreds of pictures per second, while ordinary cameras can only take 2-3 images. There is a huge difference.
4. The output is raw data, and its spectral range is often relatively wide, which is more suitable for high-quality image processing algorithms. For example, machine vision applications. The spectral range of pictures taken by ordinary cameras (DSC) is only suitable for human vision, and they have been compressed by mjpeg, resulting in poor image quality. With the above technical advantages, industrial digital cameras will eventually replace traditional analog cameras and will surely become the industry development trend.