ultrasonic transmitter

ultrasonic transmitter

[¦əl·trə′sän·ik tranz′mid·ər]
(engineering acoustics)
A device used to track seals, fish, and other aquatic animals: the device is fastened to the outside of the animal or fed to it, and has a loudspeaker which is made to vibrate at an ultrasonic frequency, propagating ultrasonic waves through the water to a special microphone or hydrophone.
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The topics include laser Doppler velocimetry technology for integration and directional discrimination, thin film resistance temperature detectors, inductive sensors fitted in aircraft windows to measure lightning current, wideband ultrasonic transmitter and sensor array for in-air applications, and applying inertial sensors in developing smart particles.
Their two-stage, 20 gpm OMEGA neutralization is fitted with an ultrasonic transmitter mounted on flanged pipe extension with dual metering pumps and splash-guard tubing.
Ultrasonic sensor with basic electronic circuit includes the built-in ultrasonic transmitter element, for which a PROWAVE 400EP250 transmitter was selected.
The ultrasonic transmitter circuit is shown as chart 6.
Operating in the frequency range above 20KHz, an ultrasonic transmitter floods the region surrounding the part.
Using a novel microcatheter that is threaded via a leg artery into a stroke patient's brain, a small ultrasonic transmitter at the catheter tip bathes the offending blood clot with low energy ultrasound while simultaneously infusing clot dissolving drug.
An ultrasonic transmitter and infrared sensor capture hand movements while a receiver attached to a notepad stores up to 50 pages of memos and images.
By attaching an electronic receiver at the top of a notepad and connecting it to a computer through a USB port, an ultrasonic transmitter located in the base of the pen and an infrared sensor capture all hand movements.
Speakers simply wear the ultrasonic transmitter device and press a button to activate the camera tracking capabilities from up to 50 feet away from the camera.
Surgical procedures for implanting ultrasonic transmitters into flathead catfish (Pylodictis olivaris).
The base unit in the new sensor range, the Type 8136, is a modular radar transmitter designed for simple process applications - typically, measuring flow in open channels or levels in open tanks - as a superior alternative to ultrasonic transmitters.
For instance, fishery returns of conventional tags and the tracking of red drum tagged with ultrasonic transmitters have provided important information about the magnitude and seasonal patterns of fishery harvests and natural deaths (Latour et al.