What is INTERNET OF THINGS? The role of IoT in the 4.0 era.

* Industrial Revolution 4.0.

    Industry 4.0 (Industry 4.0) is a term used to refer to the development process in production management and production lines, in addition, it is also used to refer to the fourth industrial revolution. The term Industry 4.0 was first announced in 2011 by a group of representatives from different fields (such as economics, politics, education) under the German initiative to improve competitiveness in the German economy. Industrial production. The goal of Industry 4.0 is to develop automated production lines. In the industrial revolution 4.0, people can communicate and monitor devices instead of operating them.

   AI, Robotic, Big data, Cloud Computing and IoT, etc. are development branches in industry 4.0, each with its own distinct task role. In particular, IoT is responsible for connecting all devices together, making it possible for devices to transmit and receive data collected from sensors, and at the same time connect people with devices.

* IoT – Internet of Things.

    Internet of Things (Vietnamese: Internet of Things) is a term referring to a network of devices that are connected to each other through the Internet, they can exchange data with each other, expanding the ability to collect data through the Internet. through multiple devices and promptly alert people if a risk occurs. For example, a smart home when experiencing a fire, the sensors will promptly detect and immediately contact the nearest fire center without having to wait for human response.

* How does IoT work?

    Before understanding how IoT works, let's take a look at the IoT model. The basic model of IoT consists of 3 parts:

- Sensors and actuators: are responsible for reading values   from sensors such as sound, light, temperature, ... and converting them into electrical signals to help the devices understand and take actions. reasonable.

- Connection: the read signals will be transmitted to the network through different communication methods such as Wifi, Bluetooth, ZigBee, Lora...

- People and processes: the inputs of the IoT network will be aggregated into a system including data, people and processes for the purpose of making better decisions.

    The final result will be displayed on the human web browser or mobile device.

* Detailed model and How to operate.

1. Sensors: sensors are everywhere, from temperature, light, and humidity sensors to biological and biometric sensors to get information about people's health. The sensor's job is to collect all kinds of different information and share it with the IoT Gateway/Framework.

2. IoT Gateway/Frameworks: as the name suggests, IoT gateway is a gateway to the Internet for all the things/devices that we want to interact with. The task of IoT gateway is to transfer data between sensor devices in the local network and the Internet or the World Wide Web.

3. Cloud Server: the data transmitted through the gateway is stored and processed securely inside a Cloud server (also known as the Data Center). The processed data will be used to perform smart actions, turning devices into smart devices.

4. Mobile applications: Mobile applications are visual means for end users, allowing them to monitor and control devices from anywhere via the Internet. These applications will display important information on the user's mobile device, in addition, it also allows the user to send commands to control the devices through the user interface.

* The role of IoT in the industrial revolution 4.0.

    In the industrial revolution 4.0, IoT acts as the "lifeline" of the system.

    For AI and Big Data, it acts as a data processor, receiving a large amount of data, processing and making the right decisions in all cases. With Robotic, its mission is to create machines that can take on the heavy work that humans have to do, and at the same time fulfill the requirements given by humans, Robotic's ultimate goal is to change replacing human labor with the tireless movement of machines. And finally, connecting devices, collection, processing, and response processes will be handled by IoT.

* Some applications of IoT.

    In fact, IoT can be applied in many different fields, bringing high efficiency to application areas. Here are some common applications of IoT:

- Smart Home: This is the most popular application, and the most searched IoT topic on Google. Smart Home is an application that allows you to monitor and control your home remotely via mobile devices, in addition, they are also capable of recognizing and performing tasks such as turning on / off the air conditioner, lights, electricity when you are about to go home. Smart Home can be said to be a utility application, improving the quality of life of every family.

- Wearables: Smart Watch is an example. A wristwatch with the ability to collect your health information and give notifications and instructions to help you protect, exercise…

- Smart Car: Imagine a road full of smart cars with the ability to recognize each other's position and speed, with that ability, they can avoid each other, reducing the risk of accidents.

- Smart City: This is an ambitious human idea. Smart City is a city that gathers a lot of IoT devices, with the ability to collect and meet all the needs of people. This will definitely be the city you wish to live in.* Conclude.

    Through this article, I have summarized the concepts of industrial revolution 4.0, IoT, what is the IoT model and what are the tasks of each part. At the same time, I also mentioned the important role of IoT for this 4.0 revolution.