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          迪奧科技標語
          Eight factors for choosing an industrial camera
          Author:Administrator   Published in:2019-11-29 15:30

          How to choose an industrial camera? The editor of TEO Technology believes that before choosing an industrial camera, users must first understand their positioning and purpose: Is the industrial camera purchased for defect detection or size measurement? Is it static or dynamic? How often do you take pictures? And what is the size (field of view) of the product? What effect is expected? What about the environment on site? Are there any other special requirements? Here, TEO Technology has summarized the eight characteristics of industrial camera selection based on customer needs and product characteristics for many years. It is hoped that each user can choose an industrial camera that is suitable for him.

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          1.Recognize analog and digital cameras

          (1) An analog camera must be equipped with a digital capture card, which is converted into digital signals for transmission and storage. Generally, the resolution of analog cameras is very low, and the frame rate is also fixed. Analog signals can be distorted by electromagnetic interference from other equipment in the factory, such as electric motors or high-voltage cables. As the noise level increases, the dynamic range (ratio of the original signal to noise) of the analog camera decreases. The dynamic range determines how much information can be transferred from the camera to the computer.

          (2) Digital cameras collect digital signals. Digital signals are not affected by electrical noise. Therefore, digital cameras have a higher dynamic range and can transmit more accurate signals to computers. This should be selected according to actual needs.

          2.Select the camera resolution according to your needs

          The resolution is not as high as possible, it is to choose the size of the resolution according to the actual application requirements of the system. Different product sizes, required resolutions and the performance of the software used can calculate the resolution of the required industrial camera; in addition, the most important consideration in the field environment is temperature, humidity, interference and lighting conditions to choose different industrial cameras.

          3. How to choose the CCD and CMOS of the photosensitive device

          If the object to be photographed is moving and the object to be processed is also a real-time moving object, of course, TEO TECH's full-frame exposure CCD chip camera is the most suitable. However, some manufacturers' CMOS cameras can also be used as CCDs if they use the frame exposure method. If the speed of object movement is very slow, within the range of camera exposure time we set, the distance of object movement is small, and the pixel size is converted into one or two pixels, then the CMOS camera is also suitable. Because during the exposure time, the deviation of one or two pixels cannot be seen by the human eye (if it is not used for measurement), but if the deviation is more than 2 pixels, the image taken by the object will have smear, so you cannot choose CMOS. Camera out.

          4.How to determine color and black and white

          If what we are dealing with is related to the color of the image, then of course a color camera is used, otherwise it is recommended to use black and white, because a black and white camera with the same resolution is more accurate than color, especially when looking at the edges of the image better result.

          5. Frame rate selection is key

          According to the speed to be detected, the frame rate of the selected camera must be greater than or equal to the detection speed. In the case, the processing time of the image must be fast, and it must be completed within the camera's exposure and transmission time.

          6.The transmission interface is determined as such

          Select USB, 1394, Camerlink, BNC, Gigabit Ethernet, and HDMI interface cameras according to the transmission distance, stability, and data size (bandwidth).

          7, CCD target surface

          The size of the target surface will affect the length of the focal length of the lens. At the same viewing angle, the larger the target surface size, the longer the focal length. When choosing a camera, especially when the shooting angle is more stringent, the size of the CCD target surface and the cooperation between the CCD and the lens will directly affect the size of the field of view and the sharpness of the image. Therefore, when selecting the CCD size, it is necessary to select it in conjunction with the focal length and the field angle of the lens. Generally speaking, the selection of the CCD target surface must be combined with the physical installation space to determine whether the working distance of the lens is within the installation space. The size of the lens is required Must be greater than or equal to the target size of the camera.

          8.The price of the camera

          Cameras with the same parameters have different prices from different manufacturers. It depends on everyone to communicate and negotiate with the manufacturers. Generally speaking, if you have the quantity, the overall price is very different from the price you buy one.

          The above are the eight characteristic factors to pay attention to when choosing an industrial camera. I hope the above will be helpful to everyone. The choice of the camera not only directly determines the captured image resolution and image quality, etc., but also directly related to the overall system operating mode . Therefore, choosing a suitable industrial camera is crucial.


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