Inspection and Measurement Sensors
Give Axis New England a call next time you have a difficult inspection and measurement project. We have the skill sets and product knowledge to help you through the toughest of applications. Call to speak with a Inspection and Measurement Specialist at: (888)-NOW-AXIS

Cognex 5100 & 5400 Machine Vision Systems:
The In-Sight 5100 and 5400 machine vision sensors are the highest performance models of the industry-leading family of In-Sight vision sensors. These rugged vision sensors are equipped with a full library of proven Cognex vision tools designed to handle a wide range of vision tasks including part location, measurement, identification, and assembly verification in many industries.

Cognex Checker Vision Sensor:
Checker is an integrated solution for presence/absence applications, designed to be the simplest vision sensor to setup and support. Intended for applications historically solved by multiple photoelectric sensors, Checker utilizes self-contained lighting, optics, processing, and I/O and the simple setup of the CheckMateTM software to detect a part, inspect a part, and provide a pass/fail output. From the date codes on ice cream pints to the o-rings on transmission shafts, Checker can quickly and easily detect that the correct features are present.

Cognex DVT 540C & 550C series Color Machine Vision Systems:
The Legend 540C and 550C series color machine vision sensors provide powerful and economical solutions to color vision applications. Available in standard or high resolution, theses sensors integrate easily into existing network and do not require the use of a PC on the factory floor. Equipped with powerful tools, like the “one touch” color learning and color segmentation, these solutions can handle all major color modes and spaces found in the factory environment.


Calculating Vision Sensor Resolution:
Machine Vision is reaching the masses. Engineers and designers can now incorporate digital, CCD-based vision sensors into their quality control, measurement and positioning applications. Today’s vision sensors are more flexible and powerful than ever before, utilizing feature-based algorithms to solve new applications that increase quality, efficiency and machine capabilities.

With new technology, it is important understand the limitations. Here is how to quickly calculate the resolution of a vision sensor to determine if it will work in your application.

1. Determine the FOV (field of view) of the lens. (Often the object or feature length.)
2. Determine the CCD width in pixels (Usually 640 or 1280)
3. FOV / CCD width = Pixel Resolution.
4. Divide by 10 = Sub-pixel Resolution.

Example: Looking at a 2-inch hole with a 640x480 CCD, add 0.25" on each side for a total of 2.5". This would result in 2.5 / 480= 0.0052 inches per pixel. And adjusting for sub-pixel resolution 0.0052 / 10 = 0.00052 inches per pixel. (Most industrial vision applications only rely on 1/4-pixel resolutions 0.0052 / 4 = 0.0013.)

Note: All vision sensors are light dependent, consistent sub-pixel calculations require controlled positioning and lighting of the object to be measured. Inspection and Measurement Sensors

Axis New England will be holding a Workshop on January 20, 2006 focusing on applying Cognex Vision Systems for ID reading and verification. Please contact Axis New England at (888)-NOW-AXIS if you are interested in attending.

Axis New England
P: (888) NOW-AXIS
F: (781) 937-9966
Email: vision@axisne.com