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所在平台: Udemy |
课程主页: https://www.udemy.com/course/fundamentals-of-electrical-instrumentation/
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课程名称：电气仪器基础 课程概述：在本课程中，您将学习电气仪器的基础知识，包括该领域中不同类型的设备、传感器和电路。仪器是确保建筑和工厂过程控制系统顺利运行的重要组成部分。这些过程控制系统中有许多仪器设备负责测量和执行操作，并通过电路进行传输。本课程将教您如何连接数字（离散）和模拟仪器设备，并理解与其相连的电路的工作原理。 我们将关注四种类型的电气仪器设备： - 数字（离散）输入 - 数字（离散）输出 - 模拟输入 - 模拟输出 课程将从数字输入开始，学习数字输入设备的用途，以及如何将其连接到控制器的汇总和源配置。将展示如何连接按钮和接近传感器作为数字输入设备。接下来，我们将学习数字输出，了解如何连接电磁阀等输出设备，并探讨汇总和源接线配置。 课程进行到一半时，您将通过网上查找仪器和PLC电路的接线图来检验所学知识。在学习模拟输入时，我们将重点介绍模拟电路的基本原理，例如0-10伏和4-20毫安电路，并讨论2、3、4和5线传感器，并通过演示温度传感器作为输入设备进行连接。 接下来，我们将演示一个模拟输出电路，使用变频器作为输出设备，观察当模拟信号改变时电机的反应。最后，我们将研究控制器在实际安装中与各种输入和输出连接的样子。 如果您准备通过学习仪器基础知识来提升您的电气控制技能，欢迎参加本课程！别忘了带上笔和纸，因为过程中会有一些有趣的练习等着您！
In this course you will learn the Fundamentals of Electrical Instrumentation - you will learn about the different types of devices, sensors, and circuits used in this field.Instrumentation is the vital ingredient that enables the process control systems of buildings and factories to run smoothly. Within these process control systems are numerous instrumentation devices that take measurements and perform operations which are transmitted and received via electrical circuits - in other words along the wires that they are connected to!It takes a skilful person to know how these electrical circuits work and how the wiring must be connected. That's where you come in!After completing this course, you will know how to wire up digital (discrete) & analog instrumentation devices and understand how the electrical circuits connected to them work.Electrical instrumentation devices come in many forms, the four types that we will focus on in this course are:-Digital (discrete) Inputs-Digital (discrete) Outputs-Analog Inputs-Analog OutputsIn the course we will start off by looking at Digital Inputs, we will learn about what digital input devices are used for and learn how to connect them to a controller in sink and source configuration. Connecting a push button and a proximity sensor as digital input devices will be demonstrated.Digital Outputs are covered next, we learn how to connect a solenoid actuated water valve as an output device and also look at sink and source wiring configurations.About halfway through the course we put what we've learnt to the test by surfing the net and studying some various wiring diagrams of instrumentation & plc circuits. When we get to Analog Inputs, we hone in on the basic fundamentals of analog circuits such as the 0-10volt and 4-20ma circuits. We then discuss 2, 3, 4 and 5 wire transmitters and round out the chapter by demonstrating a temperature sensor connected in a loop as an input device. WARNING - there may be a little maths involved (just a little)!An Analog Output circuit is demonstrated next by using a variable frequency drive as our output device, we get to see what happens to a motor connected to the drive when the analog signal is changed.To finish off we study a controller as it would look in a real installation with various inputs and outputs connected to it.So if you are ready to boost your electrical control skills by learning the fundamentals of instrumentation I'll see you in the course!But don't forget your pen and paper as there will be some fun exercises along the way!
