4G data transmission terminal is mainly used for data transmission in the Internet of Things industry. The collected data is sent to the host computer (server) through the 4G network. At the same time, 4G data transmission terminal has another name, called 4G DTU “Data Transfer unit” “This type of product all uses 4G network, so it is fully Netcom and supports China Mobile, China Telecom and China Unicom. Most of the 4G data transmission terminals currently on the market are fully network-connected. For example, this 4G data transmission terminal from Zongheng Intelligent Control has 7 modes and 15 frequencies – it can also be used in some foreign countries.
Let’s talk about some features of this “4G data transmission terminal” from Zongheng Intelligent Control. The “active collection” function is a function rarely found in other products on the market. It can actively collect sensor data and send it to the server. Users can set the collection cycle directly in the configuration software. Very simple to use. At the same time, the networking method is also quite unique, supporting one-to-one and one-to-many. Free Zongheng Cloud is provided through Zongheng Intelligent Control, which can realize the same functions as digital radio stations. (The price of digital radio stations on the market is about 1,000 yuan/station. However, the price of Zongheng Intelligent Control is only ¥331/station.)
Introduction to 4G data transmission terminal functions
Most of the products on the market are actually roughly the same. They are nothing more than transparent transmission, providing heartbeat packages, registration packages and other common functions. However, the 4G data transmission terminal introduced must have some functional features that other manufacturers do not have – Zongheng Intelligent Control 4G data transmission terminal (ZHC4012). Let’s start with the product’s special functions, and then talk about the common functions.
“Special feature”
(1) Support automatic collection and proactive reporting. The collection instructions and collection cycle can be dynamically modified. Reduce server processing flow. Most products currently on the market do not have this feature.
(2) ZHC4012 supports networking functions, supporting one-to-one, many-to-one networking, etc. It is very practical for the needs of certain special scenarios.
“basic skills”
(1) China Mobile, China Unicom, China Telecom 4G high speed (2) Data transparent transmission (3) Serial heartbeat packet (4) TCP_Client, HTTP_Client
(5)Modbus UTR /TCP
(6) Host and slave modes, the host mode supports RS485 cascading of multiple devices (7) Cloud forwarding, cloud networking (8) Setting APN
(9) Network registration package, heartbeat package (10) Hardware watchdog (11) SIM card number query (12) Local upgrade, remote upgrade (13) Host computer quick configuration (14) Virtual serial port remote operation
4G data transmission terminal application
The advantages and characteristics of 4G communication method are low delay, fast speed, good signal, and it can automatically switch networks when the network is not good. For applications such as Internet of Vehicles, smart machines, video surveillance, smart electric piles, vending machines, etc. that require high speed It is fast and very suitable for application scenarios with good signal. In addition to the scenarios mentioned above, it is also suitable for other scenarios that require speed and delay.
4G data transmission terminal parameters
Wireless parameters |
Frequency band information |
LTE-FDD | B1/B3/B5/B8/(B28) |
LTE-TDD | B38/B39/B40/B41 |
WCDMA | B1/B8 |
TD-SCDMA | B34/B39 |
CDMA | BC0 |
EVDO | BC0 |
GSM | 900/1800 |
LTE-FDD | Max 150Mbps(DL)/50Mbps(UL) |
LTE-TDD | Max 130Mbps(DL)/35Mbps(UL) |
TD-SCDMA | Max 4.2Mbps(DL)/2.2Mbps(UL) |
WCDMA | Max 384kbps(DL)/384kbps(UL) |
EDEG | Max 236.8kbps(DL)/236.8kbps(UL) |
GPRS | Max 85.6kbps(DL)/85.6kbps(UL) |
CDMA1x | Max 153.6kbps(DL)/153.6kbps(UL) |
Número de portos | RS485*1 |
padrão | RS485: bloco de terminais de 2 posições (A, B) |
taxa de transmissão | 600~921600bps |
bits de dados | 8,9 |
Bit de paragem | 0.5 , 1 , 1.5 , 2 |
Dígito de controlo | NONE (sem bit de paridade) EVEN (paridade par) ODD (paridade ímpar) |
cartão SIM | 1.8V/3V |
LTE antenna | SMA |
GPS antenna | SMA |
Dimensão do equipamento | 93*69*25mm(L*W*H) |
concha | √ |
Indicador de estado | √ |
Reload | √ |
Temperatura de funcionamento | -40℃~85℃ |
temperatura de armazenamento | -40~125℃ |
Humidade de funcionamento | 5%~95% |
Humidade de armazenamento | 1%~95% |
DNS | √ |
Parameter setting method | Host computer/Modbus command |
Simple transparent transmission method | √ |
HTTP protocol transmission | √ |
network send cache | 10*512byte |
network receive cache | 10*512byte |
Serial port send buffer | 10*512byte |
Serial port receive buffer | 10*512byte |
Serial port packaging mechanism | 50ms, packing length 512byte |
Transparent cloud software | √ |
Virtual serial port software | √ |
Parameter setting software | √ |