Since the introduction of the Internet of Things, the industry has continuously deepened and optimized its definition to make it more specific and easier to integrate with reality. It is no longer just a concept, which is inseparable from the exploration and discovery of practitioners. The Internet of Things is divided into three parts literally:
1. Things, combined with a real entity, such as combining with home appliances to produce the electronic field of smart home; combining with the environment to produce the subfield of environmental detection; combining with the vehicle subfield of the Internet of Vehicles, etc., things are the foundation of the Internet of Things .
2. Connection, generally refers to the way of networking, such as GPRS, NB-IoT, CatM, 4G, and RFID, Lora, WIFI, BLE, ZigBee, Internet, satellite, etc., each network corresponds to a specific application scenario , Network connection is the link of the Internet of Things.
3. Network, generally refers to the processing part of network big data. The back-end server is divided into three levels: device access, data processing, and data display.
The above three parts constitute the Internet of Things, which is known as an upgraded version of the current Internet. The current Internet mainly solves the relationship between people, and on this basis, the Internet of Things expands the relationship between people to the relationship between people and everything by adding various perception and control systems. This is a major change, and therefore it is called the third industrial revolution.
What are the current common IoT applications? For example, Didi Taxi and Meituan Takeaway. Through the location uploaded by the mobile APP, the platform can perceive vehicle location information and passenger location. When passengers place an order, the platform allocates the information to nearby vehicles, or coordinates multiple passengers to order together, and guides Didi drivers to their destinations. In this application, things are cars, connections are services provided by mobile phones, and the Internet is the platform. Meituan Takeaway is similar. Through the O2O model, the market value of the two emerging companies easily surpassed many big names in the physical industry who have been working hard for many years.
Similar to Didi and Meituan based on the characteristics of the Internet of Things, it solves the needs of people's clothing, food, housing and transportation, future development trends, and even self-driving vehicles that can be recruited, or after the order is placed, the robot will prepare meals that meet your appetite and deliver it to you via drone , This is the goal of the Internet of Things.
The Internet of Things is inseparable from embedded terminal devices. Embedded devices, as terminals of "things", are responsible for collecting and reporting information, receiving instructions and executing control actions. The specific architecture is the main control chip, which is connected to various sensors to collect data, such as environmental sensors, acceleration gyroscope six-axis sensors, satellite positioning modules; and then through network modules such as NB-Iot, Cat1 module or built-in network baseband part, it will process The subsequent data is reported to the background server.
Embedded system development includes sensors, automatic control, network communication, human-computer interaction, etc. With the high level of chip integration, software integration based on operating systems, the development of the Internet of Things, small electronic products that support the network will usher in a wave opportunity.