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相关概念视频

Pulse rhythm01:30

Pulse rhythm

Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac muscle...
Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
Voltmeter01:18

Voltmeter

A voltmeter is an electrical device that measures the potential difference or voltage between two points. It is connected in parallel with the circuit element it is measuring. A parallel connection is used because elements in parallel experience the same potential difference. The voltmeter is represented by the symbol "V ".
An ideal voltmeter would have infinite resistance, so connecting it between two points in a circuit would not alter any of the currents. Real voltmeters always have finite...
Instrumentation Amplifier01:25

Instrumentation Amplifier

An electrocardiography (ECG) machine is an essential piece of medical equipment used to monitor the electrical activity of the heart. It operates by detecting small electrical changes on the skin that result from the depolarization of the heart muscle during each heartbeat. However, these signals are in the microvolt range and can be easily overwhelmed by noise or interference.
To overcome this challenge, an ECG machine utilizes an instrumentation amplifier. This specialized amplifier is...
Holter Monitor: 24-Hour Monitoring01:23

Holter Monitor: 24-Hour Monitoring

Holter monitoring is a continuous electrocardiography (ECG) recording that tracks the heart's electrical activity over an extended period, generally 24 to 48 hours. This noninvasive diagnostic tool detects irregular heart rhythms that may not be captured during a standard ECG performed in a clinical setting.DeviceThe Holter monitor is a portable, small device connected to several electrodes on the patient's chest. These electrodes detect the heart's electrical signals and transmit them to the...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...

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Strain Sensing Based on Multiscale Composite Materials Reinforced with Graphene Nanoplatelets
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基于压电变频器的结构健康监测

Lingyu Yu1, Yanfeng Shen2, Victor Giurgiutiu1

  • 1Department of Mechanical Engineering, University of South Carolina, 300 Main Street, Columbia, SC 29208, USA.

Sensors (Basel, Switzerland)
|June 19, 2024
PubMed
概括

一个多世纪前发现的压电效应对许多技术至关重要. 这项研究探讨了它们的基本原则和各种应用.

科学领域:

  • 材料科学 材料科学 材料科学
  • 凝聚物质物理学 凝聚物质物理学
  • 固态物理 固态物理

背景情况:

  • 压电的发现可以追溯到100多年前.
  • 压电效应在各种科学和技术领域中得到了广泛的应用.

研究的目的:

  • 提供对压电基本原理的全面概述.
  • 突出各种科学和工程学科中压电效应的多样化和不断变化的应用.
  • 讨论最近在压电材料研究和技术方面的进展和未来前景.

主要方法:

  • 关于压电的基础研究和最近研究的文献综述.
  • 对材料性能和设备性能指标的分析.
  • 案例研究说明了不同领域的关键应用.

主要成果:

  • 证明了压电在医疗设备,汽车系统和消费电子等领域的广泛适用性.
  • 确定了推动性能改进的关键材料创新.
  • 突出了压电能收获的潜力,以为小型电子设备提供动力.

结论:

  • 压电效应仍然是一个基石技术,正在进行重大开发.

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  • 对新型压电材料和设备设计的进一步研究将打开新的应用.
  • 压电设备的集成为能源和传感需求提供了可持续的解决方案.