The data transmission module developed by Zongheng Intelligent Control has a variety of network type products, including 4G, GPRS, LoRa, Ethernet, etc. Data collection and transmission system based on wireless transmission module. The data collection terminal collects the temperature and humidity in the environment, connects to the RS485 pin of the 4G data transmission module, and transmits it to the cloud server through the virtual serial port for data monitoring.
With the development of communication technology, the transmission rate of data information is constantly increasing. In recent years, the coverage rate of 4G communication signals has become higher and higher, and the communication efficiency has reached a high level. With the development of Internet of Things technology, 4G data transmission module (Data transmis-sion unit, DTU) also occupies a very important position in the Internet of Things system1-4. Data collection, transmission and storage can be seen everywhere in all walks of life. This system selects temperature and humidity, which has attracted more attention, as the collection object. In a communication environment with smooth 4G network, this system can be widely used in temperature and humidity monitoring places, and other types of data collection sensors can be expanded according to actual needs.
The system consists of a data collection and transmission terminal, a 4G wireless transmission module, and a PC. The data collected by the data collection and transmission terminal transmits the data to the cloud server through the 4G module.
Product selection table:
| Exterior | Nombre/Modelo | interfaz | Características |
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4G RTU/ZHC492C | 4DI/4DO/4AI/1RS485 |
Scheduled restart/trigger action Support MQTT, Json protocol Actively collect and report One-to-one and many-to-many networking |
 |
4G DTU/ZHC4013 | RS485 |
Scheduled restart/trigger action Support MQTT, Json protocol Actively collect and report One-to-one and many-to-many networking |
 |
GPRS RTU/ZHC2921 | RS485/4DO/4DI/4AI |
local logic operations Automatic calibration, threshold reporting Dry and wet node IO detection Actively collect and report |
 |
Ethernet RTU/ZHC1921 | RS485/6DI/2PIN/4DO/4AI |
DO follow AI/DI remotely One-to-one and one-to-many networking Support DNS domain name resolution |
 |
LoRa RTU/ZHC0661 | RS485/4AI/2AO |
8Km remote transmission AI automatically calculates range Point-to-point remote control following |
Keywords: wireless transmission module