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Here come Wireless Sensors
to establish communications. ZigBee also spells out what are called logical device types which perform various functions in network management. Other provisions spell out application profiles basically, definitions that ensure common devices such as light switches, HVAC controllers, and so forth
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Small Unit (Sensor) Tackles Large Jobs
the. controller adjusts the laser illumination such, that the same signal quality is obtained on. dark and light surfaces and is thereby "colorblind", meaning that all colors are measured. equally well. In addition, the controller monitors the Teach-in-key and circuit. If the. sensor has been trained
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Illuminate the Invisible
applications, such as noticing excess glue in assemblies. Each sensor option is best suited to specific applications. Photoelectric sensors emit a beam of light that the target returns to the receiver. The beam's intensity depends upon the target, which often acts as a reflector. This design, however
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No more Fender Benders
to change lanes, preventing a possible fender bender. Cameras in automotive vision systems use sensors similar to this KAC9618 CMOS Active Pixel Sensor from Kodak. The large rectangular area is a 648 488 active-pixel array. The array snaps 30 monochrome pictures/sec and converts them to a digital data
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Better inspection: Less Scrap
. Laser-line sensors operate much the same way as point-triangulation types. A key difference is that the laser beam is optically expanded in one dimension to form a line of laser light on the surface to be measured. A 2D digital array or camera serves as a detector. Measurements are taken
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Motion Control and Encoder Technology: A Tutorial
diaphragm or mask (4), which splits the light into a second channel 90° out of phase, an output style called quadrature. The two light channels (A and B), pass through the tempered glass, polycarbonate or metal pulse disc (2) onto the photodiode array (5). If theres one constant in in automated
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Active Matrix LCD with Integrated Optical Touch Screen
present a prototype 2.4 in. x 2.4 in TFT LCD. with an integrated array of optical sensors, which, after image. Drain-source voltage (V). processing, provides the XY location of a shadow cast by a stylus. or finger touch. Figure 1. Measured photo-current under varying light. intensity for an a-Si TFT
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MICRO:Top 40 (Nov '00)
products, process control software, metrology equipment, and an array of sensors, valves, and probes. Congratulations to the winners! Page Two of Product Allstars A front-opening shipping box (FOSB) for 300-mm wafers meets strict environmental protection and contamination specifications