Sensors: World's fastest laser displacement sensor?

Keyence RS-CMOS sensor is 8x faster than previous models. ‘Multi-Able Control' for transparent targets optimizes the laser intensity by sensing and adjusting to the reflected light for each layer of a transparent object.

04/07/2010


Keyence LK G5000 laser displacement sensorThe Keyence LK-G5000 laser displacement sensor has a newly developed RS-CMOS sensor that provides a 392 kHz sampling rate-that's 8 times faster than previous models-

Keyence's Active Balanced Laser Control Engine (ABLE) is now more powerful as well. ABLE II intelligently optimizes sensor performance by balancing laser emission time, laser power, and gain. Furthermore, ABLE II has a faster high-speed tracking ability. Dual-port data transfer, using a quad speed clock, enables pixel data to be transferred eight times faster than conventional models, thus simultaneously achieving high speed and high resolution. A newly developed HDE (High Definition Ernostar) lens combined with twice the pixel resolution results in highly-defined received-light wave patterns. Three selectable built-in algorithms also improve the application solving potential.

A translucent object can cause a diffuse reflection beneath the surface when the laser beam penetrates inside the object and the received-light wave pattern gently broadens. The Real Peak Detect (RPD) algorithm is able to detect the "Real Peak" by canceling the impact of the broadened wave patterns.

Multi-Able Control for transparent targets optimizes the laser intensity by sensing and adjusting to the reflected light for each layer of a transparent object. High accuracy is accomplished because the measurement is not affected by each layer's reflectivity. The Center and Peak Composition (CPC) algorithm for high luster resins attains more stable high-definition measurements by combining two wave form patterns of reflected light from the target. One wave form is a result of the highly reflective surface while the other is a result of light reflected from beneath the surface.

Added capabilities include the ability to perform calculations for up to 12 sensor heads for flatness, warpage and multi-point thickness. As an added bonus, the LK-G5000 includes the ability to measure speed and acceleration while measuring displacement.

- Edited by Renee Robbins, senior editor
Control Engineering News Desk
Sensors: Process and Discrete Sensors news from Control Engineering



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