Results 1 to 10 of about 1,122,592 (279)

Detection of Pathologic Heart Murmurs Using a Piezoelectric Sensor [PDF]

open access: yesSensors, 2021
This study aimed to evaluate the capability of a piezoelectric sensor to detect a heart murmur in patients with congenital heart defects. Heart sounds and murmurs were recorded using a piezoelectric sensor and an electronic stethoscope in healthy ...
Kiichi Takahashi   +6 more
doaj   +2 more sources

Stress Monitoring of Concrete via Uniaxial Piezoelectric Sensor [PDF]

open access: yesSensors, 2022
The uniaxial piezoelectric sensor was developed to overcome the problem of reflecting the output charge of the piezoelectric element as a combination of vectors in the three stress directions.
Chen Wu   +3 more
doaj   +2 more sources

Characteristics Research of a High Sensitivity Piezoelectric MOSFET Acceleration Sensor

open access: yesSensors, 2020
In order to improve the output sensitivity of the piezoelectric acceleration sensor, this paper proposed a high sensitivity acceleration sensor based on a piezoelectric metal oxide semiconductor field effect transistor (MOSFET).
Chunpeng Ai   +2 more
doaj   +3 more sources

Development of Nanocomposite-Based Strain Sensor with Piezoelectric and Piezoresistive Properties

open access: yesSensors, 2018
Sensors provide an interface between mechanical systems and the physical world. With the move towards Industry 4.0 and cyber-physical systems, demands for cost-effective sensors are rapidly increasing.
Mehdi Sanati   +3 more
doaj   +3 more sources

A Flow Velocity Measurement Method Based on a PVDF Piezoelectric Sensor [PDF]

open access: yesSensors, 2019
To measure the flow velocity of a fluid without affecting its motion state, a method was proposed based on a polyvinylidene fluoride (PVDF) piezoelectric film sensor.
Qi Li   +3 more
doaj   +2 more sources

Research on material selection of force-sensitive element for high-frequency dynamic piezoelectric pressure sensor [PDF]

open access: yesMATEC Web of Conferences, 2022
The high-frequency dynamic piezoelectric pressure sensor has the advantages of simple structure, long service life, high natural frequency, excellent signal-to-noise ratio and great sensitivity.
Cai Sikang   +3 more
doaj   +1 more source

A State-of-the-Art Review of Structural Monitoring Using Piezoelectric Paint Sensors [PDF]

open access: yes한국정밀공학회지, 2021
Recently, large-scale accidents caused by minor damage from fatigue failure and impact on structures have been frequently reported. Therefore, a real-time damage monitoring system of structures is considered to be one of the most important technologies ...
Hyunjin Bae, Kyungwho Choi
doaj   +1 more source

Piezoelectric materials selection for sensor applications using finite element and multiple attribute decision-making approaches [PDF]

open access: yesJournal of Advanced Dielectrics, 2015
This paper examines the selection and performance evaluation of a variety of piezoelectric materials for cantilever-based sensor applications. The finite element analysis method is implemented to evaluate the relative importance of materials properties ...
Anuruddh Kumar   +5 more
doaj   +1 more source

Piezoelectric Sensor with a Helical Structure on the Thread Core

open access: yesApplied Sciences, 2020
In this paper, we introduce a piezoelectric sensor curled on a thread core in a helical structure. In particular, a polyvinylidene fluoride film was curled and fixed on a thread core.
Cheoleon Park, Hojoon Kim, Youngsu Cha
doaj   +1 more source

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