- What can be done with the IoT
With the IoT we can do a lot, but typically we need to mention: data storage, visualization, automation, control, optimization, and autonomy.
- Data saving
Through devices like sensors collect big data into cloud storage. By analyzing the collected big data we can anticipate possible damage failure problems, and the big data that has been collected is also usable in machine learning. create (AI).
Collect data through the device, based on the data that can monitor the object’s behavior. For example, the use of sensors in factories, which can monitor the performance, can provide an efficiency improvement plan.
Can be controlled remotely by human, or preset rules to control the system. For example, smartphone lock key. Can be manipulated remotely to all objects connected to the network.
By analyzing data, no need for human can manipulate or process it automatically. Machines can communicate with each other, things like each other, collect data themselves without needing people. This feature is especially useful in production lines (M2M).
With AI not merely automating, for each condition, the state will provide the most suitable treatment. With the data of family sensors, AI analyzes, when the homeowner is away from home can automatically lock the door, this is one of the typical applications. Unlike control and automation, through the AI analysis of collected data, we do not need to create a human-specified program but can still control other objects.
No need for people, with full properties “Visualization / Visualization / Control / Automation / Optimization will create an autonomous system.
- The basic organization of the IoT
Typical elements of the structure of the IoT are: Device (sensor / actuator), Network, Cloud (App / Storage). Get data from the sensor through the network and send data to the cloud. The sent data will be collected in Cloud storage, through the Application to visualize, analyze and measure. Based on the results after visualization, analysis and measurement, the actuator will be controlled, linked to external services (PC, SmartPhone, Robot, etc).
- Device sensor
There are many types of sensors such as temperature sensor, accelerometer, angle, sound, image, vibration, position … Imagine if you need to measure the temperature, you can buy the ADT 7410 sensor. Do you think it is enough to get the current temperature data? The answer is “Not enough”.
Actually we need a Device sensor, including the sensor itself, the microcomputer, and the wifi module.
It is rare that a set of sensors and microcomputers will be sold. The sensor data retrieval is determined by the microcomputer (CPU). These data will be sent to Cloud by Network (Wifi module).
- Device actuator
Actuator representative must refer to motor. After analyzing the data retrieved from the Device sensor, control the Device actuator. There are 4 types of motor as follows, divided according to each purpose.
DC motor: Electric motor operates with direct current.
Servo motor: It is part of the motion control system of the machine. Servo motors provide the required motion force for machine equipment to operate.
Stepping motor: A type of electric motor that has a principle and application that is different from most conventional electric motors. They are essentially a synchronous motor that converts control signals in successive discrete electrical pulses into rotational or rotor movements capable of fixing the rotor in positions. necessary.
Vibration motor: It literally means “vibration motor”, a typical example is the vibration function of the phone.
- Single board computer
For people who do not have much knowledge about electrical circuits, creating the Device sensor is quite hard. So the solution here is to use Single board computer, we can control the sensor by Microcomputer (CPU). Raspberry pi 3 is known to be one of the typical single board computers for learning and researching to build IoT systems.
Single board computer is a board containing: Microcomputer (CPU), storage (HDD), Communication module …. Some typical types of Single board computer are:
One of the functions of Cloud is: Data storage (Storage), visualization, computational analysis, control (Application). There are some typical types of Cloud such as: Azure, GCP, AWS （Amazon Web Service）
Amazone offers a Public cloud service. This is the cloudservice used the most in the world. There are 18 regions worldwide and 55 Availability zones.
This article gives an overview of the IoT system, you can learn more about other knowledge based on the source: https://codezine.jp/article/detail/12063?fbclid=IwAR1SI0LR0VFSig2t1htJQfdVGoJdh1CFUZJusREv6nRWV9EVv6nRWV9