As more and more devices connect to the network and communicate with each other, we are accelerating into the era of “Internet of Everything”. The wireless transmission module is a key link between the IoT perception layer and the network layer. All device data generated by the IoT perception layer terminals need to be aggregated to the network layer through the wireless communication module, and then the devices can be remotely managed and controlled through the cloud management platform. At the same time, through the data Analysis brings about improvements in management efficiency.
The wireless transmission module belongs to the underlying hardware link and has its irreplaceable functions. It is the carrier of the intelligent terminal of the Internet of Things. The principle of wireless transmission module is to send or receive electromagnetic signals and convert them into information that we can understand. The function of the wireless transmission module is to connect things to things, enable various IoT terminal devices to realize information transmission capabilities, and enable various smart devices to have IoT information interfaces.
Wireless transmission modules can be divided into GPRS modules , 3G modules, 4G modules , NB-IoT modules, LoRa modules, Wi-Fi modules, Bluetooth modules, etc. according to the network connection method. They are mainly used for long-distance wireless data transmission through the operator network. Or self-organizing network to achieve remote communication.
Zongheng Intelligent Control Wireless Transmission Module Selection Table:
| ZHC4922 | Полная сетевая связь 4G | 1RS485 4DO 4DI 4AI | MQTT protocol, local logic |
| ZHC4921 | Полная сетевая связь 4G | 1RS485 4DO 4DI 4AI | Cloud networking, local logic |
| ZHC4931 | Полная сетевая связь 4G | 1RS485/232 1DO 2DI 1AI | Point-to-point/point-to-multipoint |
| ZHC4661 | Полная сетевая связь 4G | 1RS485 4AI 4AO | Automatic collection and threshold reporting |
| ZHC4012 | Полная сетевая связь 4G | 1RS485 4AI 4AO | Serial port transparent transmission, PLC/configuration docking |
| ZHC2921 | GPRS | 1RS485 4DO 4DI 4AI | Modbus protocol, local logic |
| ZHC0561 | LoRa | 1RS485 4DI 2DO | Ad hoc network, proactive reporting |
| ZHC0661 | LoRa | 1RS485 4AI 2AO | Ad hoc network, threshold reporting |
Data transmission can be simply divided into two categories: wired and wireless.
Traditional wired networks require a lot of manpower and material resources for wiring, and have too many limitations. When encountering some special application environments, the wiring engineering of wired networks has strong constraints.
In contrast, using wireless transmission modules to establish a dedicated wireless data transmission method saves manpower and material resources, and the investment is quite economical. Moreover, wireless communication methods have wider adaptability, are almost not restricted by geographical environment, and have better scalability.
Of course, in some short-distance data communication systems, wireless communication methods are not cheaper than wired methods, but sometimes the actual on-site environment is difficult to wire. Customers will still choose wireless methods to achieve communication based on the needs of the on-site environment.