迪奥科技标语
What are the main considerations when choosing an industrial camera?
Author:Administrator   Published in:2019-09-20 09:02

The use of industrial cameras is still relatively large and can be used in many industries. However, due to the high requirements of industrial cameras for accessories, industrial cameras have a lot of details to be aware of when selecting. Below, Shenzhen Industrial Camera Manufacturer-TEO will give you a brief introduction to the main considerations for choosing an industrial camera.

1. Speed and exposure

When choosing an industrial digital camera, the speed of object imaging must be fully considered. For example, assuming that the object does not move during exposure during shooting, a relatively simple and inexpensive industrial camera can be used; for stationary or slowly moving objects, an area array industrial camera is best suited for imaging stationary or slow moving objects. Because the entire area of the area must be exposed once, any movement during the exposure time can cause blurring of the image, but motion blur can be controlled by reducing the exposure time or using the flash; for fast moving objects, when using a moving object When facing an industrial camera, you need to consider the number of moving objects in the industrial camera during the exposure time, and also consider the minimum feature that can be represented by one pixel on the object, that is, the resolution of the object, the rule of thumb in the image of the moving object. That is, the exposure must occur within a time when the amount of movement of the collected object is less than one pixel.

1.jpg

2. Improve the advantages and disadvantages of resolution

While high-resolution industrial cameras help improve accuracy, by analyzing sharper, finer images, speed is reduced. Industrial digital cameras transmit image data consisting of a series of numbers representing pixel values. A camera with a resolution of 200 x 100 has 20,000 pixels, so 20,000 digital values are sent to the acquisition system. If the industrial camera is operating at a data rate of 25 MHz, it transmits a value every 40 nanoseconds. This results in an entire image requiring approximately 0.0008 seconds, which is equivalent to 1250 frames per second. And when the resolution is increased to 640 × 480, there will be 307,200 pixels, about 15 times the above. Using the same 25MHz data rate, it takes 0.012288 seconds to capture the entire image, or 81.4 frames per second. These values are all expected, and the actual camera frame rate will be lower because we have to add exposure and adjustment times, but an increase in industrial camera resolution will result in a proportional decrease in the industrial camera frame rate. While various industrial camera output configurations increase industrial camera resolution without sacrificing frame rate, this also requires increased complexity and higher cost.

3. Frame rate

The frame rate of an industrial camera is the number of complete frames that an industrial camera sends to the acquisition system over a predetermined period, which is also commonly referred to as the number of frames per second. For example, an industrial camera with a resolution of 640 x 480 has a maximum frame rate of 50 frames per second. Therefore, this industrial camera needs to send one frame with 20 milliseconds after one exposure. Some industrial cameras cannot use subsequent exposures when the current exposure is being read, so they require a fixed time interval when there is no image. Other types of cameras can simultaneously capture the next exposure while reading an image. Therefore, the reading time and method of the camera must be considered when imaging a moving object. The interframe time interval is further considered when there is no exposure.

4. Spectrum response and sensitivity

All industrial digital cameras are equipped with electronic sensors that are sensitive to light energy. The wavelength of light energy that is sensitive to light energy by the camera is generally between 400 nanometers and 1000 nanometers. In addition, it enters the ultraviolet spectrum below 400 nm, while others enter the infrared spectrum above 1000 nm. There is also a need to image a particular wavelength at which an object emits a certain light, and industrial camera features defined by such wavelengths also need to be defined. Filters are also used to block unwanted wavelengths of light, but there is still a need to understand how industrial cameras respond well to the wavelengths of light required.

3.jpg

The above is the introduction of TEO to introduce you to the main aspects of choosing an industrial camera. Shenzhen TAO Technology Co., Ltd. (TEO TECH) is the TEO International Enterprise Group Far East Manufacturing Base. The Group Headquarters (TEO Systems Inc. USA) is a global technology pioneer and product developer in the field of medical imaging, photodynamics and medical lasers. TEO 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.


Copyright @ 2016 - 2019 迪奥科技 版权所有 备案号: 粤ICP备09101295号