Thank you for being on time for this online lesson tonight. I'm Professor Alan from the University of Miami. Today we're going to talk about Io T. Anyone who already heard of this concept can raise their hand.No? OK, don't worry.So what is Io T?

IoT is short for the Internet of Things, which refers to connect various physical devices through the Internet to achieve data collection, transmission and analysis. In simple terms,our devices can 'talk' and communicate with each other

I'm sure you know some examples that are the result of the Internet of Things.Who wants to go first? Eric, you got it. Smart home system!absolutly! like Smart light bulbs, thermostats and refrigerators can all be controlled via a mobile App for automated management. they are perfect examples of the IO T

Now let me show you how it works.This conception can be divided into three levels: the perception layer, the network layer and the application layer.

The perception layer is responsible for data collection and is the "eyes" and "ears" of the Internet of Things system, while the network layer is responsible for data transmission and is the "neural system" of the Internet of Things system. The application layer is responsible for the application and display of data and is the "outlook" of the Internet of Things system

Now let's take inteligent lighting system as an example, in the application layer, users can check the current lighting status through the mobile App of the intelligent lighting system

The application of the Internet of Things is very extensive, not only in the smart home, but also in the smart city, industrial Internet of Things, medical health. I'm not going to go into it here, but if you're interested you can go online and search for details. Any questions about the concept of IO T? Put it in the comment box

OK！Question from Nicole.Professor, the Internet of Things is so widely used in smart homes, how to ensure its security?

This is a very important question. When transmitting data, Internet of Things devices must use strong encryption technology to ensure that the data is not illegally intercepted or tampered with during transmission. For example, data in a smart home system can be transmitted using encrypted protocols so that even if the data is intercepted in transit, it cannot be easily interpreted

If there are no questions, let's stop here! One more thing, assignments are due by midnight on Sunday evening. Late assignments will not be accepted without permission. all right all right.See you next monday and have a good rest of your day！