Author: Zen and the Art of Computer Programming
1 Introduction
With the advent of new industrial revolutions such as intelligence, automation, and digitalization, the Internet of Things (IoT) has become a new economic growth point, attracting industry attention to its integrated applications. Due to the widespread deployment of the Internet of Things, sensors, terminal devices and cloud computing have become core components. The tremendous changes brought about by the Internet of Things era have brought new opportunities and provided more opportunities and challenges to sensor creators and developers. More and more makers are trying to build their own smart products through the Internet and the Internet of Things. Some of these sensors with the "light of the Internet of Things" are being applied to various industries. Next, I will use smart cities as the background and combine the main application fields of IoT sensors - environmental monitoring, parking lot monitoring, remote monitoring, air conditioning control, etc. to introduce how to use sensors to realize the functions of IoT devices.
2. Explanation of basic concepts and terms
2.1 Explanation of concepts and terms
2.1.1 IoT(Internet of Things)
The Internet of Things, abbreviated as IoT in English, is a distributed system that uses modern information technology and network technology to connect various types or specifications of items for data exchange, information sharing, and collaborative work. Simply put, the Internet of Things connects various physical devices using computer technology so that they can transmit information and data to each other while maintaining a stable connection. According to the type and composition of the equipment, it is divided into two categories:
- Low-speed device category: transmits high-frequency wireless signals or transmits information through unicast communication;
- High-speed equipment: Use fixed-frequency two-way communication modules (such as Wi-Fi/Bluetooth modules) to transmit digital signals;
The Internet of Things based on low-speed equipment includes: smart lighting, smart robots, smart refrigeration machines, smart air conditioners, smart kitchen appliances, etc. The Internet of Things based on high-speed equipment includes: smart car remote controls, smart garbage disposal