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相关概念视频

Gas Chromatography: Types of Detectors-II01:19

Gas Chromatography: Types of Detectors-II

353
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
353
Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

396
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
396
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

522
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
522
Batteries and Fuel Cells03:12

Batteries and Fuel Cells

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A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...
27.2K
Gas Chromatography: Overview of Detectors01:13

Gas Chromatography: Overview of Detectors

483
Detectors in gas chromatography (GC) help identify and quantify the components of a mixture by translating chemical properties into measurable signals, which are displayed on a chromatogram. Detectors can be categorized into two main types: destructive and non-destructive.
A non-destructive detector allows a sample to be analyzed without altering or consuming it, meaning the sample can be collected after detection for further analysis. Examples include thermal conductivity detectors and...
483

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相关实验视频

Updated: Jun 19, 2025

A Simple, Low-cost, and Robust System to Measure the Volume of Hydrogen Evolved by Chemical Reactions with Aqueous Solutions
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燃料电池实时检测套件 燃料电池的实时检测套件

Hossein Pourrahmani1,2, Ali Javadi3, Amir Mahdi Hosseini Monazzah3

  • 1Group of Energy Materials, École Polytechnique Fédérale de Lausanne, Sion, 1951, Switzerland.

Heliyon
|July 24, 2024
PubMed
概括

本研究介绍了一种新的印刷电路板 (PCB) 设计,用于质子交换膜燃料电池 (PEMFC) 的无线故障诊断. 该系统使用物联网 (IoT) 进行远程监控,增强安全性和可访问性.

关键词:
物联网 (IoT) 的物联网 (IoT) 的物联网.印刷电路板 (PCB) 是一种印刷电路板.质子交换膜燃料电池 (PEMFC) 是一种燃料电池.传感器 传感器 传感器无线通信是一种无线通信.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 电气工程 电气工程
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 质子交换膜燃料电池 (PEMFC) 是高效的能设备.
  • 现有的PEMFC故障诊断方法往往是实验室制定的,昂贵的,缺乏安全性.
  • 实时监控和诊断对于PEMFC的运营效率和安全至关重要.

研究的目的:

  • 提出一种新的印刷电路板 (PCB) 设计,用于实施传感器来监测PEMFC运行参数和污染.
  • 开发基于物联网 (IoT) 的系统,以确保PEMFC数据与服务器的安全无线通信.
  • 为PEMFCs创建一个具有成本效益和可访问的故障诊断套件.

主要方法:

  • 设计了一个专门的PCB,集成了用于PEMFC监控的必要传感器.
  • 实现了一个物联网通信协议,用于向服务器无线传输数据.
  • 开发了一个安全的计算机应用程序 (.exe文件) 直接连接到网络热点.
  • 通过注入已知度的污染物 ( ) 和将传感器数据与实验结果进行比较来验证系统.

主要成果:

  • 成功开发了一个用于PEMFC故障诊断的新型PCB设计.
  • 使用物联网和专用网络热点建立安全的无线数据通信.
  • 开发的套件通过无线方式准确测量了污染物水平 (11ppm和12ppm).
  • 实验验证证了该系统的适用性和准确性.

结论:

  • 拟议的基于PCB和物联网的系统为实时PEMFC故障诊断提供了一个安全,无线和可访问的解决方案.
  • 这种新的方法克服了传统的,实验室依赖的诊断方法的局限性.
  • 开发的故障诊断套件显示了提高PEMFC可靠性和性能监测的巨大潜力.