4g dtu transparent transmission module
The 4G DTU transparent transmission module developed by Chengdu Zongheng Intelligent Control is a product that supports two-way transparent transmission. Users do not need to care about complex protocols. The product is two-way transparent transmission and only requires simple configuration. At the same time, the product is 4G full network, supporting all domestic operator networks. The communication module uses CTA1 series modules, which is highly cost-effective. A 4G DTU transparent transmission module is as low as 139 yuan. The product adopts guide rail installation, which is easy to install and takes up little space.
4g dtu transparent transmission module parameters
| последовательный порт | источник питания |
| Количество портов | RS485*1 | Напряжение | 9~36V |
| скорость передачи данных | 600～921600bps | текущий | 60mA(aver) @9V 30mA(aver) @36V |
| Network parameters/frequency band |
| LTE-FDD | B1/B3/B5/B8 |
| LTE-TDD | B34/B38/B39/B40/B41 |
| GSM | 900/1800 МГц |
| данные |
| LTE-FDD | Макс 10 Мбит/с (DL)/Макс 5 Мбит/с (UL) |
| LTE-TDD | Максимум 7,5 Мбит/с (DL)/максимум 1 Мбит/с (UL) |
| EDGE | Макс 236,8 Кбит/с (DL)/Макс 236,8 Кбит/с (UL) |
| GPRS | Макс 85,6 Кбит/с (DL)/Макс 85,6 Кбит/с (UL) |
4g dtu transparent transmission module function
·Support JSON, Modbus RTU/TCP
· 1 RS485 interface
· TCP_Client/ MQTT_Client
· Set time point to trigger action
· Cloud forwarding and cloud networking
·Network registration package, heartbeat package
· Hardware watchdog
· Data triggering and scheduled reporting
·Remote configuration and remote upgrade
· The host computer supports import and export of configuration files
4g dtu transparent transmission module two-way transparent transmission
Другие объяснения
В настоящее время в сфере мобильной связи доминирует технология 4G. Технология 3G уже не способна удовлетворить многие бизнес-потребности пользователей. Технология 5G пока находится на стадии исследований и разработок, поэтому преимущества технологии 4G проявляются в полной мере. Технология 4G является доминирующей, поэтому необходимо соответствующим образом изучать её ключевые технологии. Ниже приведены ключевые технологии стандарта 4G.
Orthogonal Frequency Division Multiplexing Technology (OFDM) OFDM technology is actually a type of multi-carrier modulation. Its principle is to divide the channel into several orthogonal sub-channels and convert high-speed serial data signals into low-speed parallel sub-data signals. The sub-data The signal is modulated and transmitted on these orthogonal sub-channels. Orthogonal signals can be separated by using correlation demodulation technology at the receiving end. Due to the use of orthogonal channels, this reduces mutual interference between sub-channels. The use of OFDM technology for transmission can improve spectrum utilization, enhance the signal’s anti-fading ability, reduce inter-symbol interference, and increase the data transmission speed.
The core idea of software radio technology is to construct an open, standardized and modular universal hardware platform, and use software to complete various functions such as working frequency band, modulation and demodulation type, data format, encryption mode, communication protocol and so on. Broadband A/D and D/A converters are placed as close as possible to the antenna to develop a new generation of wireless communication systems that are highly flexible and open.
