Technicians used to have to measure everything by hand, which is prone to error. The human eye can only detect small differences up to a certain point, so it becomes almost impossible to measure objects that are below a certain threshold. Video measuring machines have made it possible to overcome these limitations and provide engineers with extremely accurate data even when working with tiny materials.
Unlike conventional measurement technology, these devices rely on the passage of light through a sensor to check the distance between two points. The most basic way of doing so is by employing the phase-shift technique, which works somewhat similarly to how radar functions. A video machine casts a beam onto a surface and then measures how different the light reflected off that surface is. Once it figures out how much the beam’s frequency shifted, it can tell users how far it traveled.
Using Video Technology To Measure Distances
Businesses that compete in the semiconductor and healthcare industries often need to buy extremely accurate measurement tools that have much lower tolerances than normal. Academic laboratories and research facilities often find themselves in the same situation. It was the needs of individuals in all of these spaces that provided the original reason for the development of video measurement equipment in the first place.
Such machines leverage the power of standard solid-state cameras, which resemble those used in mobile phones and by television broadcasters. Light passing through an aperture is extremely steady when measured in a clean laboratory environment. That offers users consistent and reproducible results they can rely on. Using this radar-like system has proven so effective that some agencies that specify exact weights and measures are replacing physical standards with it. That’s why science books will sometimes state that a meter or some other length is defined as the amount of photons that can pass through a specific gas.
Getting Metrics From Light
Such theoretical studies are only useful inside classrooms and government offices, however. Business organizations that plan on using time-of-flight measurement technology won’t have to concern themselves with the way that these devices work. They need only check out the specifications offered by the manufacturer to know how sensitive a tool they’re getting. Those who work in fields that require measurements of materials on a microscopic scale may want to invest in a device that explicitly gives the smallest distances it can handle. That will help ensure that they get a tool that’s sensitive enough for them.
New developments in the field are helping engineers design video measurement machines that can detect smaller and smaller distances. Technicians may be surprised to find just how low their devices can go and still work within acceptable levels. Regulatory bodies update their standards whenever they notice machines becoming more sensitive. That’s why it may look as though well-known units like the meter and foot have gotten redefined in the last few years.
As video machines become more precise over time, the way we think about measurement is changing to keep up with them. If your business does any type of measurements, it’s time to consider investing in video measuring machines.
