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How should a visual machine vision industrial camera choose a model
Author:Administrator   Published in:2019-08-26 17:18

Industrial cameras are also called industrial cameras. Compared with traditional cameras we see, industrial cameras have higher image stability, high anti-interference ability and high transmission capacity. Industrial cameras can be said to be very important in machine vision systems. A component. If you can choose a good industrial camera, it has a very important impact on the stability of the machine vision system. Below, Dior Technology Xiaobian will bring you to understand how the machine vision industrial camera should choose the model?


  How should a machine vision industrial camera choose a model?


  First of all, when choosing an industrial camera, you must first understand your own needs, first determine the accuracy requirements of the test product, determine the size of the field of view of the camera, determine the speed of the detected object, and determine whether it is dynamic or static. Then after determining the above, to determine the type of hardware, hardware-related parameters will affect its energy absorption, so determine the relevant parameters when determining the type. Related parameters include the following points:


  1. Determination of the face pixel size

  At present, the software precision on the market is generally not subject to error, which is the sub-pixel we often say. Although there is no error in the software, the hardware error is inevitable, so the machine vision system on the market is generally able to The guaranteed error is one pixel. Assuming a field of view of 10*10mm and an accuracy requirement of 0.01mm, the pixel of an industrial camera is 10/0.01=1000 pixels, so at least a million-level (1394*1040) pixel industrial camera is required.



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  2. The choice of camera trigger mode

  Continuous acquisition mode: selectable for static detection, continuous motion of the product can not give the trigger signal to be selected;


  The software trigger mode can be selected for dynamic detection, and the continuous motion of the product can select the trigger signal;


  The hardware trigger mode can be selected for high-speed dynamic detection, and the continuous high-speed motion of the product can select the trigger signal;


  3. The determination of the camera transmission mode, the advantages and disadvantages of the current camera transmission mode and its application are as follows:

  Analog camera (PCI capture card), the speed requirement is not high. Its advantages: stable, cost-effective; shortcomings: low frame rate, generally only 25 frames to 30 frames.

  1394 interface camera, when the system uses multiple cameras, you can choose first. When you need high speed, you can choose first. Advantages: Does not occupy the system CPU, the frame rate is high; Disadvantages: accounting for PCI slots, expensive.

  USB interface camera, the system can only be used with a single camera. When high speed is required, it can be selected first. Advantages: do not need to occupy the PCI slot, high frame rate, cost-effective; disadvantages: account for the system CPU;


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  4. The choice of light source usually uses backlight source in the dimension measurement, but the ordinary backlight will have diffraction phenomenon at the edge of the object, and the brightness change of the light source also has a great influence on the edge positioning, so the collimation should be used. Backlight.


  The above is the knowledge about how to choose the model of the machine vision industrial camera introduced by Dior Technology. If you want to know more about machine vision industrial cameras, you can check or consult on our official website. Dior Technology's products cover industrial and medical machine vision systems and products, including: full range of industrial cameras, industrial imaging measurement cameras, laser cutting special cross line cameras, microscopic imaging dedicated image collectors, ultra high definition pathology microscopy conferences System, pathological microscopic image analysis and remote consultation system. Products are widely used in research institutes, hospitals, factories and mines, cultural relics appraisal units, criminal investigation and justice, intelligent transportation and other industries.

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