Embedded piezoelectric sensor-based real-time strength monitoring during curing process of concrete

2011 ◽  
Author(s):  
Dong-Jin Kim ◽  
Changgil Lee ◽  
Hajoo Chang ◽  
Seunghee Park
Keyword(s):  
Real Time ◽  
Piezoelectric Sensor ◽  
Curing Process ◽  
Time Strength

scholarly journals Design a Monitoring Device for Heart-Attack Early Detection Based on Respiration Rate and Body Temperature Parameters

2021 ◽  
Vol 3 (3) ◽  
pp. 114-120
Author(s):  
Isna Fatimatuz Zahra ◽  
I Dewa Gede Hari Wisana ◽  
Priyambada Cahya Nugraha ◽  
Hayder J Hassaballah
Keyword(s):  
Body Temperature ◽  
Real Time ◽  
Respiration Rate ◽  
Heart Attack ◽  
Detection System ◽  
Warning System ◽  
Piezoelectric Sensor ◽  
Attack Detection ◽  
Sensor Data ◽  
Frequency Module

Acute myocardial infarction, commonly referred to as a heart attack, is the most common cause of sudden death where a monitoring tool is needed that is equipped with a system that can notify doctors to take immediate action. The purpose of this study was to design a heart attack detection device through indicators of vital human signs. The contribution of this research is that the system works in real-time, has more parameters, uses wireless, and is equipped with a system to detect indications of a heart attack. In order for wireless monitoring to be carried out in real-time and supported by a detection system, this design uses a radio frequency module as data transmission and uses a warning system that is used for detection. Respiration rate was measured using the piezoelectric sensor, and body temperature was measured using the DS18B20 temperature sensor. Processing of sensor data is done with ESP32, which is displayed wirelessly by the HC-12 module on the PC. If an indication of a heart attack is detected in the parameter value, the tool will activate a notification on the PC. In every indication of a heart attack, it was found that this design can provide notification properly. The results showed that the largest respiratory error value was 4%, and the largest body temperature error value was 0.55%. The results of this study can be implemented in patients who have been diagnosed with heart attack disease so that it can facilitate monitoring the patient's condition.

Numerical Control Lathe Cutting Force Signal On-Line Monitoring Design

2014 ◽  
Vol 711 ◽  
pp. 329-332
Author(s):  
Lin Zhao
Keyword(s):  
Cutting Force ◽  
Real Time ◽  
Piezoelectric Sensor ◽  
Numerical Control ◽  
Signal Acquisition ◽  
Time Data ◽  
Main Research ◽  
Monitoring Design ◽  
Force Signal ◽  
On Line

The main research direction of Numerical control lathe cutting force signal on-line monitoring is to process real-time monitoring, using the sensor, charge amplifier, video acquisition card and computer to collect data and signal. Signal acquisition makes use of the piezoelectric sensor signals and send them to the computer in order to acquire the real-time data and display the dynamic signal so that monitor the process. Signal processing is the course that data will be collected for subsequent processing and analyzing. It includes display, filtering, correlation analysis, spectral analysis, etc. We can conclude the signal’s characteristics after the time domain and frequency domain analysis of signals.

56‐6: A Wearable Self‐Driven Piezoelectric Sensor Enabling Real‐Time Blood Pressure Estimation

2021 ◽  
Vol 52 (1) ◽  
pp. 795-798
Author(s):  
Ying Qian ◽  
Huimin Li ◽  
Anqi Li ◽  
Xinghui Liu ◽  
Guoxian Wu ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Real Time ◽  
Piezoelectric Sensor ◽  
Pressure Estimation ◽  
Blood Pressure Estimation

Curing monitoring of bonded composite patch at constant temperature with electromechanical impedance and system parameters evaluation approach

2021 ◽  
Vol 31 (1) ◽  
pp. 015039
Author(s):  
Jianjian Zhu ◽  
Jinshan Wen ◽  
Chunyang Chen ◽  
Xiao Liu ◽  
Zifeng Lan ◽  
...  
Keyword(s):  
Real Time ◽  
Constant Temperature ◽  
Patch Repair ◽  
Curing Process ◽  
Real Time Monitoring ◽  
Electromechanical Impedance ◽  
System Parameters ◽  
Composite Patch ◽  
Repair Patch ◽  
Bonded Composite

Abstract As one of cost-effective maintenance methods, bonded composite patch repair has been receiving more and more attention in the engineering community since past decades. However, realizing real-time monitoring for curing process of bonded repair patch is difficult for most current techniques. In our work, a method based on electromechanical impedance and system parameters evaluation for structural health monitoring issues was developed, which could implement the online monitoring throughout whole curing process. Compared with the dynamic thermomechanical analysis results, the experiment data matches well. It demonstrates that the proposed approach can effectively monitor the curing process of composite repair patch at a constant temperature of 120 °C. Hence, the presented approach in this paper is expected to be a novel, robust, and real-time monitoring method for structural maintenance with the composite patch.

scholarly journals Low Cost Health Monitoring Sytem Based on Internet Of Things Using Email Notification

2021 ◽  
Vol 3 (2) ◽  
pp. 45-52
Author(s):  
I Dewa Gede Hari Wisana ◽  
Bedjo Utomo ◽  
Farid Amrinsani ◽  
Era Purwanto
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Health Monitoring ◽  
Low Cost ◽  
Piezoelectric Sensor ◽  
Medical Personnel ◽  
The Internet ◽  
Time Data ◽  
Module Design ◽  
The Internet Of Things

Monitoring activities are needed if there are symptoms of a disease that require quick action so that the patient's condition does not get worse, for that we need a system that can notify doctors so they can take action. The patient monitoring system in hospitals is generally still carried out conventionally, among others, nurses or doctors come to the patient's room to check on the progress of the patient's condition, this will be a problem, if the number of medical personnel and facilities is insufficient to monitor. Patients who need special attention for patient care, such as monitoring the patient's breathing rate. The use of the internet of things (IOT), as a device that can work without the help of people, can perform tasks and provide easier and real time data, so that they can access output directly. The purpose of this research is to design an inexpensive health monitoring tool based on the Internet of Things (Respiration Parameters) using a piezoelectric sensor and an ESP32 Wi-Fi module. From the results of the module design taken from 10 respondents, obtained that the average measurement high accuracy (17.76 + 0.61) and the average level of stability of the design has a magnitude of 0.4 so that it can be concluded that using a piezoelectric sensor in this series can obtain good accuracy. This the design can be used to monitor a person's respiration in real-time

scholarly journals An Active Self-Driven Piezoelectric Sensor Enabling Real-Time Respiration Monitoring

Sensors ◽  
2019 ◽  
Vol 19 (14) ◽  
pp. 3241 ◽  
Author(s):  
Ahmed Rasheed ◽  
Emad Iranmanesh ◽  
Weiwei Li ◽  
Yangbing Xu ◽  
Qi Zhou ◽  
...  
Keyword(s):  
Real Time ◽  
Piezoelectric Transducer ◽  
Thin Film Transistor ◽  
High Sensitivity ◽  
Piezoelectric Sensor ◽  
Great Promise ◽  
Dynamic Force ◽  
Respiration Monitoring ◽  
Respiration Rhythm ◽  
Transducer Signal

In this work, we report an active respiration monitoring sensor based on a piezoelectric-transducer-gated thin-film transistor (PTGTFT) aiming to measure respiration-induced dynamic force in real time with high sensitivity and robustness. It differs from passive piezoelectric sensors in that the piezoelectric transducer signal is rectified and amplified by the PTGTFT. Thus, a detailed and easy-to-analyze respiration rhythm waveform can be collected with a sufficient time resolution. The respiration rate, three phases of respiration cycle, as well as phase patterns can be further extracted for prognosis and caution of potential apnea and other respiratory abnormalities, making the PTGTFT a great promise for application in long-term real-time respiration monitoring.

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