Industrial cameras

hello friends in this blog i will share my knowledge on industrial cameras
Mainly the industrial cameras are used for machine vision purposes and for robotic applications.
Mainly the cameras consists of a sensor which will actually store the visual image when it get actuated.Mainly the cameras are of two types.One type of cameras use ccd array as sensor and one more type will use c- mos technology for sensor.Both the technologies are very popular now a days.Both will store the image in the cells inside the sensor.And after that signals are converted in to some fine form which can be even converted in to digital form.Basically their are two types of cameras, one type is Analog cameras and the other one is digital cameras.Only analog signals are produced by the analog cameras and digital signals are produced from the digital cameras.Even if the analog cameras give the output as an analog signal the signal is to be converted in to digital signal by using an framgrabber.Framgrabber is piece of electronic PCB which will convert analog signals in to digital signals.This framgrabber will be placed inside the pci slot in the pc.Usually in industries only the industrial pc will be used form building a special purpose machines.That industrial pc will be configured such that it will be properly suits for that particular application.Even from the digital cameras the signals must be preprocessed before it is actually used for software preprocessing.But the framgrabber used for the digital cameras will be of simple type which has less complex circuits than the analog framgrabbers.From the camera only the crude signals will come and that crude signals are converted in to digital form and then that converted digital signals are used for the actually processing.While processing the required features are extracted from that image and that features are proceed according to the actual application.The cost of an industrial camera depends up on the mega pixels it is having with in a square mm.usually it is called as mega pixel per square mm.If the number of pixels per square mm got increased the accuracy of the image will also got increased.If the accuracy of the image got increased the image can be used for higher precision measurement.
So friends thats ends my post on this topic and i will be back with a new topic ...