Briefly describe the main parameters and applications of CCD high-definition industrial cameras

High-precision automatic dispensing machines and glue filling machines are equipped with CCD high-definition industrial cameras, which can magnify products hundreds of times, a thousand times, or even ten thousand times. The dispensing points of some products are very small, and the precision requirements for dispensing are very high. If you use your eyes to identify the dispensing points, on the one hand, the error will be very large, and the ordered products may not meet the quality requirements. On the other hand, the dispensing points may not meet the quality requirements. On the other hand, if you look at it for too long, the dispensing points will feel blurry, and your work efficiency will be very low. More importantly, it is equipped with a CCD industrial camera and related CCD system software. When there is an error in the product workpiece, within a certain range, the automatic glue dispensing machine and automatic glue filling machine can automatically correct the position deviation.
Introduction to relevant knowledge about CCD industrial cameras:
Definition: Industrial cameras refer to camera equipment that can be used in industrial sites. They have the requirements to adapt to complex industrial environments and can work stably for a long time. Industrial cameras refer to video image acquisition equipment that can be stably and efficiently used in industrial sites. They can store images directly on the hard disk. Compared with ordinary cameras, industrial cameras have higher resolution, frame rate, light requirements, and exposure methods. etc. are all highly comparable, and the main component is a CCD photosensitive chip.
The automatic glue filling machine
CCD was invented by Bell Laboratories in the late 1960s. Beginning as a new type of PC memory circuit, CCDs soon had many other potential applications, including signal and image (silicon's photosensitivity) processing.
CCD processes a series of different functions on a thin silicon wafer. Several identical ICs and other components that can produce functions are distributed on each silicon wafer. The selected ICs are cut from the silicon wafer and packaged in a carrier for use. on the system. To sum up, CCD mainly has the following types:
1. Area array CCD industrial camera:
allows the photographer to shoot moving objects in one exposure at any shutter speed.
2. Line array CCD industrial camera:
Scan the image with a row of pixels and make three exposures - corresponding to red, green, and blue filters. As the name indicates, the linear sensor captures one-dimensional images. It was initially used in the advertising industry to shoot static images and linear arrays. When processing high-resolution images, it was limited to non-moving objects with continuous lighting.
3. Three-line sensor CCD industrial camera:
In a three-line sensor, three parallel rows of pixels cover RGB filters respectively. When capturing a color picture, the complete color picture is composed of multiple rows of pixels. Three-line CCD sensors are mostly used in high-end digital cameras to produce high resolution and spectral gradation.
4. Interleaved transmission CCD industrial camera:
This sensor uses a separate array to capture images and power conversion, allowing the current image to be read when the next image is captured. Interlaced transmission CCDs are commonly used in low-end digital cameras, camcorders, and broadcast cameras that shoot animations.
5. Full-frame CCD industrial camera:
This type of CCD has more power processing capabilities, better dynamic range, low noise and transmission optical resolution. The full-frame CCD allows instant shooting of full-color pictures. The full-frame CCD consists of parallel floating-point registers, serial floating-point registers and signal output amplifiers. Full-frame CCD exposure is controlled by a mechanical shutter or gate to save the image, and a parallel register is used for metering and reading metering values. The image is projected onto a parallel array that serves as a projection screen. This element receives the image information and divides it into discrete quantized elements determined by the number. These information flows from parallel registers to serial registers. This process is repeated until all information is transferred. Next, the system performs precise image reconstruction.
Detailed parameter explanation: Industrial camera parameter description
Industrial camera is a key component in the machine vision system. Its 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.
Main parameters of industrial cameras :
1. Resolution (Resolution): The number of pixels (Pixels) of each image collected by the camera. For digital industrial cameras, it generally corresponds directly to the number of pixels of the photoelectric sensor. For analog cameras, it depends on the number of pixels. Regarding the video format, the PAL system is 768*576 and the NTSC system is 640*480.
2. Pixel Depth: The number of bits per pixel of data. 8Bit is commonly used. For digital industrial cameras, there are generally 10Bit, 12Bit, etc.
3.*Maximum frame rate (FrameRate)/line rate (LineRate): The rate at which the camera collects and transmits images. For area array cameras, it is generally the number of frames collected per second (Frames/Sec.). For line array cameras, it is Number of lines acquired per second (Hz).
4. Exposure method (Exposure) and shutter speed (Shutter): For line array cameras, line-by-line exposure is used. You can choose the acquisition method of fixed line frequency and external trigger synchronization. The exposure time can be consistent with the line period, or Set a fixed time; area array industrial cameras have several common methods such as frame exposure, field exposure, and rolling line exposure. Digital industrial cameras generally provide external trigger acquisition functions. The shutter speed can generally reach 10 microseconds, and high-speed industrial cameras can be even faster.
5. PixelSize: The pixel size and the number of pixels (resolution) jointly determine the size of the camera target surface. At present, the pixel size of digital industrial cameras is generally 3μm-10μm. Generally, the smaller the pixel size, the more difficult it is to manufacture and the harder it is to improve the image quality.
6. Spectral response characteristics (SpectralRange): refers to the sensitivity characteristics of the pixel sensor to different light waves. The general response range is 350nm-1000nm. Some cameras add a filter in front of the target to filter out infrared light. If the system needs This filter can be removed when sensitive to infrared light.
Detailed explanation of types:
In terms of interfaces, they are divided into: 1394 interface, usb2.0 interface, camlink interface, lvds interface, and gige interface.
 It can be seen from the above. CCD is a high-precision automatic dispensing machine and an indispensable part of the glue filling machine. Without CCD, it is difficult to ensure the quality of dispensing of very small products and products that require very high precision.