Results 11 to 20 of about 26,639 (252)

Ultra-High Sensitivity Ultrasonic Sensor with an Extrinsic All-Polymer Cavity [PDF]

open access: yesSensors, 2022
An ultra-high sensitivity ultrasonic sensor with an extrinsic all-polymer cavity is presented. The probe is constructed with a polymer ferrule and a polymer-based reflection diaphragm.
Zongyu Chen   +6 more
doaj   +4 more sources

Sprayer boom height measurement in wheat field using ultrasonic sensor: An exploratory study [PDF]

open access: yesFrontiers in Plant Science, 2022
In order to explore the influencing factors and laws of ultrasonic sensor detecting wheat canopy height, designed an ultrasonic sensor detection height test platform with speed adjustable function.
Xueguan Zhao   +10 more
doaj   +2 more sources

3D environment mapping and self-position estimation by a small flying robot mounted with a movable ultrasonic range sensor

open access: yesJournal of Electrical Systems and Information Technology, 2017
The light weight of ultrasonic sensors makes them useful for collecting environment information from mobile robots. Ultrasonic sensors are generally used in a circular formation in surface-moving robots, but this is not suitable for small flying robots ...
Kazuya Nakajima   +2 more
doaj   +3 more sources

A Submerged Optical Fiber Ultrasonic Sensor Using Matched Fiber Bragg Gratings [PDF]

open access: yesSensors, 2018
A novel kind of fiber optic ultrasonic sensor based on matching fiber Bragg gratings (FBGs) is proposed and demonstrated. The sensors consist of a pair of matching FBGs fixed to a special bracket.
Xiaohong Bai   +3 more
doaj   +2 more sources

Microfiber Interferometric Sensor for Ultrasound Detection [PDF]

open access: yesSensors
By setting up ultrasonic fields in solid and liquid environments, the propagation characteristics of ultrasonic waves were investigated, and a sensing experiment device with related physical field settings was constructed. A comparison of results between
Xiuxin Wang   +5 more
doaj   +2 more sources

Object Recognition and Positioning with Neural Networks: Single Ultrasonic Sensor Scanning Approach [PDF]

open access: yesSensors
Ultrasonic sensing may become a useful technique for distance measurement and object detection when optical visibility is not available. However, the research on detecting multiple target objects and locating their coordinates is limited. This makes it a
Ahmet Karagoz, Gokhan Dindis
doaj   +2 more sources

Characteristics of the Received Signal of an Ultrasonic Sensor Installed in a Chamber with Micro-Leakage [PDF]

open access: yesMechanical Sciences, 2021
As fossil fuel depletion and environmental pollution problems are becoming increasingly more serious, interest in the efficient use of natural resources and alternative energy is rapidly growing.
W. Seo, S. Im, G. Lee
doaj   +1 more source

Automated Real-Time Eddy Current Array Inspection of Nuclear Assets

open access: yesSensors, 2022
Inspection of components with surface discontinuities is an area that volumetric Non-Destructive Testing (NDT) methods, such as ultrasonic and radiographic, struggle in detection and characterisation.
Euan Alexander Foster   +12 more
doaj   +1 more source

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