The information acquisition devices in the IoT system include sensors, intelligent controllers, acquisition communication nodes and wireless gateways.
Sensors are the most commonly used information acquisition devices, which are capable of sensing various physical quantities in the environment, such as temperature, humidity, light, pressure, etc., and converting them into recognizable electrical signals for subsequent processing and analysis.
And the intelligent controller is another important information acquisition device in the IoT system, which is capable of receiving signals from sensors and processing the signals according to preset logic and algorithms to realize intelligent regulation of the environment.
In addition, the collection communication node plays an important role in data transmission in the Internet of Things system, which can connect the sensors and intelligent controllers and other devices to realize the unified management and processing of data. Through the collection communication node, the data between various types of sensors and intelligent devices can be efficiently transmitted to the wireless gateway, and then uploaded to the cloud to provide users with real-time and accurate data services.
The wireless gateway is the data transmission hub in the IoT system, which can receive data from the collection communication node and upload it to the cloud or server, realizing the data interoperability between various devices in the IoT system. In addition, the wireless gateway is also capable of realizing remote control functions, such as remote monitoring and management of home, factory and other scenarios through cell phone APP.
Features of IoT system:
1, real-time and data collection capability: a distinctive feature of IoT system is its real-time data collection and processing capability. Through the deployment of a variety of sensors and devices, IoT is able to sense and collect real-time information about the state of the environment, equipment or objects, ensuring the timeliness and accuracy of the data. This real-time nature enables decision makers to respond quickly and make effective decisions based on the latest data.
2, flexible network topology: the network topology of the IoT system is highly flexible and dynamic. Due to the large number and wide distribution of IoT devices, the network structure may change rapidly with the increase, movement or failure of devices. This characteristic requires the IoT system to have strong adaptive and self-healing capabilities to maintain stable network operation and data transmission.
3, large-scale connectivity and heterogeneity: IoT systems are capable of realizing large-scale device connectivity and data exchange, including various types of sensors, actuators, smart devices, and cloud platforms. These devices and systems are heterogeneous, i.e. they may use different communication protocols, data formats and operating systems.
Reference for the above: Baidu Encyclopedia-Internet of Things