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  • Sensor Sense: Optical data transmission
    represents a logic 1 value while the other frequency represents a logic 0. This resembles the way modems use two different audio tones to send data over telephone lines. The signal from the infrared sensor in the receiver feeds narrow-band filters tuned to the two frequencies. The filters minimize any
  • Coming: Cars smarter than their drivers
    in the immediate vicinity of the vehicle. Using infrared-coded laser pulses, the sensor detects the speed, direction, and distance of an approaching object. The system intelligence is in the danger-control module. This is a piece of software that looks at data gathered from the various sensors, evaluates the data
  • When to go Linear
    . As the transparent grating moves over the reflective portions of the surface, a shutter affect is created. The reflections of an infrared LED shining on the reflective media are alternately passed then blocked as the index grating moves. The flashes of light seen by the photosensor are converted
  • Brushless washer maker finds reliability in screwless connections
    an infrared stop detector plus ultrasonic width, length, and height sensors to gauge vehicle dimensions. A computer then determines an optimum distance between spray nozzles and the vehicle, and moves a boom containing spray nozzles around the vehicle accordingly. Spring-pressure terminal blocks
  • Switch Tips: Electro-Optic Level Switches
    Electro-optic level switches are used to signal the presence or absence of a liquid. They contain an infrared light-emitting diode (LED) and a light receiver. Light from the LED reflects from a prism forming the tip of the device back into the light detector. With no liquid present, most LED light
  • Who let the bots out?
    , including temperature, infrared distance, acceleration, pressure, and vibration are

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