What Type of System Do I Need?
How do I Determine Which Type of Video Measurement System That I need?
Video measurement technology has advanced the level of combining superb surface illumination, with high precision staging, zoom magnification, powerful video edge detection software, lasers, and touch probes to meet the ever changing requirements of today’s manufacturing environment.
This opens the door to a wide variety of system types that require evaluation. A project director's first decision is which of these systems will best serve the application's needs.
Below is some general information about each system to help you determine which your project requires. After making this initial decision you can follow links to access more detailed information about the system and equipment you require.
What elements of my project determine which type of system that I need?
Issue 1: What are the parts to be measured?
Be sure to evaluate all of the information required for your parts. Information should include the Length, Width, Height and Weight. This is a good start to helping determine the size of stage or measuring envelope that will be required.
Be sure to define the parts being measured including the weight, length, width and height. Specify your smallest to largest sizes, accommodating your present and future needs. Tolerance requirements will also play an important role in system configuration
Issue 2: What Size Measuring Envelope Will Be Needed?
Based on your part size specifications, you can now define the measuring envelope of the system you require. It is important to also acknowledge the overall dimensions (footprint) of the system, and it's environment. There are two stage designs available
- Stage Design - A table moves the part underneath the stationary optics
- Gantry Design - The video optics move above a stationary table surface
Issue 3: Does my application require automatic measurement operation?
The following provides an overview of the System Types which are available:
- Field of View Measurement (On-screen measurements without stage)
- Crosshair (Measurements taken manually by aligning crosshair to point)
- VED (Measurements taken automatically through the use of video edge detection)
- Multi-Sensor (Measurements taken with combination of Video, Touch Probe, and Laser)
What are the most important features to consider?
What are the different Video Measurement System Types?
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What are the Most Important Features to Consider?
There are a number of key hardware and software components to selecting the best Video Measurement system for your application. Understanding “What to Look For" in each component will allow you to configure a system with the optimum features today and growth potential for the future
Important Key Features:
- Video/Optical System
- Hardware Design
- Lighting
- Measurement Software or Digital Readout
- Data Collection/Storage
- Training and Support
- Fixture Design Capabilities
What are the significant differences between measurement system types?
The following describes a brief overview as to the system types available and should provide you with information to help guide you through the process of determining which system best meets your needs.
Field of View - On-screen measurement
Software or Video Caliper Box added to a video system allowing the operator to use on-screen measurement tools and a mouse to take measurements on the screen. These tools are over-layed on top of the the video image and are generally operated manually. System Limitations: All desired measurement features must fit in the field of view.