Designing an Ultrasonic Sensor Stick Prototype for Blind People
Journal of Physics: Conference Series, 2020 This study aims to develop a tool that can be used to detect obstacles for blind people. This tool also uses the HC-SR04 ultrasonic sensor. The method used in the manufacture of blind assistive prototypes in the form of sticks using Arduino and ...
Sularso Budilaksono +10 more
semanticscholar +1 more source
Securing Ultrasonic Sensors Against Signal Injection Attacks Based on a Mathematical Model
IEEE Access, 2019 Ultrasonic sensors are used across a variety of industrial areas, as they measure distance simply via calculating the difference of time between transmission and reception of signals. However, recently, attackers have been targeting ultrasonic sensors to
Sunwoo Lee, Wonsuk Choi, Dong Hoon Lee
doaj +1 more source
Design of ultrasonic liquid level sensor for sealed container
Gong-kuang zidonghua, 2013 In view of problem that existing ultrasonic liquid level detection methods need to open door of container in process of installing, so as to damage the container structure and affect sound wave because of volatile medium, a non-contact ultrasonic liquid ...
LU Gui-rong, NI Peng-hao, CHEN Shu-yue
doaj +1 more source
Sub-wavelength phononic crystal liquid sensor [PDF]
, 2011 We introduce an acoustic liquid sensor based on phononic crystals consisting of steel plate with an array of holes filled with liquid. We both theoretically and experimentally demonstrate sensor properties considering the mechanism of the extraordinary ...
Ke, Manzhu +2 more
core +1 more source
MEMS-on-fiber ultrasonic sensor with two resonant frequencies for partial discharges detection.
Optics Express, 2020 A novel fiber optic extrinsic Fabry-Perot interferometric (EFPI) ultrasonic sensor with two resonant frequencies for detecting the partial discharges (PDs) in switchgear is demonstrated.
Haoyong Li +5 more
semanticscholar +1 more source
Towards Human Motion Tracking Enhanced by Semi-Continuous Ultrasonic Time-of-Flight Measurements
Sensors, 2021 Human motion analysis is a valuable tool for assessing disease progression in persons with conditions such as multiple sclerosis or Parkinson’s disease.
Silje Ekroll Jahren +5 more
doaj +1 more source
Rayleigh Wave Calibration of Acoustic Emission Sensors and Ultrasonic Transducers. [PDF]
, 2019 Acoustic emission (AE) sensors and ultrasonic transducers were characterized for the detection of Rayleigh waves (RW). Small aperture reference sensors were characterized first using the fracture of glass capillary tubes in combination with a theoretical
Ono, Kanji
core +1 more source
ULTRASONIC BASED HEADING ESTIMATION FOR AIDING LAND VEHICLE NAVIGATION IN GNSS DENIED ENVIRONMENT [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018 This paper introduces a novel approach for land vehicles navigation in GNSS denied environment by aiding the Inertial Navigation System (INS) with a very low-cost ultrasonic sensor using Extended Kalman Filter (EKF) to bound its drift during GNSS ...
M. Moussa +3 more
doaj +1 more source
Laser Ultrasound Inspection Based on Wavelet Transform and Data Clustering for Defect Estimation in Metallic Samples [PDF]
, 2019 Laser-generated ultrasound is a modern non-destructive testing technique. It has been investigated over recent years as an alternative to classical ultrasonic methods, mainly in industrial maintenance and quality control procedures.
Cojocaru, Crina +4 more
core +2 more sources
Obstacle Avoidance of Multi-Sensor Intelligent Robot Based on Road Sign Detection
Sensors, 2021 The existing ultrasonic obstacle avoidance robot only uses an ultrasonic sensor in the process of obstacle avoidance, which can only be avoided according to the fixed obstacle avoidance route. Obstacle avoidance cannot follow additional information.
Jianwei Zhao +5 more
doaj +1 more source