What is GPRS DTU?What is the principle of GPRS DTU?

What is GPRS DTU What is the principle of GPRS DTU

Following the rapid development trend of communication technology and Internet technology, it is the development trend of wireless communication technology, which promotes the comprehensive improvement of the automation technology level of the power supply system.

After the emergence of the GSM network, technicians quickly put the GSM control module into a variety of instruments and instruments, such as smart electric energy meters, common fault recorders, meter reading systems and power load monitors, etc., and then make this kind of instrument The instrument has the function of remote control communication.

GPRS is a new statistical data load-bearing business process developed in the current GSM system software. It is applicable to the TCP/IP protocol and can communicate with the sequencing data network (Internet, etc.) immediately.

The scope of application of GPRS wireless data transmission system software is very common, and it can basically include all low-to-medium business processes and low-speed transmission data, especially in suitable bursty small total traffic transmission data business processes.

What is GPRS DTU What is the principle of GPRS DTU

1. What is GPRS DTU:

DTU is the abbreviation of Data Transfer Unit. The Chinese translation is a data transfer module. It is used to transmit the statistical data of the lower-level laser pipe cutting machine such as PLC to the network server on the remote side. It is professionally used to convert the serial port data into IP statistical data or A wireless network intelligent terminal that converts IP data into serial port statistical data and carries out transmission based on GPRS network communication.

DTU is widely used in manufacturing industries such as climate, engineering geology, water conservancy engineering, geology, etc. The key is to transmit smaller statistical data.

GPRS DTU is a wireless data terminal of this kind of Internet of Things technology. It uses the public operator's network GPRS network (also known as G network) to show customers the role of wireless network for long-distance data transmission.

 Select high-performance industrial 8/16/32-bit communication CPU and industrial wireless module, use embedded real-time operating system as the mobile phone software support point service platform, and show RS232 and RS485 (or RS422) sockets, which can be connected to serial devices immediately, Maintain the transparent transmission of statistical data.

Therefore, when the GPRS system software is basically built in the GSM system software, most of the components in the GSM system software are not used for hardware configuration modification, only software updates are required.

With GPRS, the customer's call creation time is greatly shortened, basically guaranteeing "always free online".

In addition, GPRS is charged based on the amount of information transmitted by the operator rather than the connection time, thereby making the service items of each customer low-cost.

2. The principle of GPRS DTU is introduced in detail:

GPRS DTU performs TCP or UDP communication requests to the big data center based on the IP address of the big data center (if the domain name of the management center website is selected, first resolve the domain name to get the management center ip address according to the management center) and its server port and other main parameters .

After receiving no response from the management center, GPRS DTU feels that it has succeeded in waving with the management center, and then maintains this communication connection always exists. If the communication connection is terminated, GPRS DTU will immediately wave to the management center again.

Because the TCP/UDP communication link has already been established, two-way communication of statistical data can be carried out.

As far as DTU is concerned, if two-way communication with the big data center is established, it will be relatively easy to perform the conversion of client serial statistics data and GPRS network data files.

If receiving the client's serial port statistics, DTU immediately encapsulates the serial port statistics in a TCP/UDP packet and sends it to the big data center.

On the contrary, when DTU receives the TCP/UDP packet from the big data center, it removes the statistical data content from it, and immediately sends it to the customer's machine equipment according to the serial port.

According to FusionExcel's data collection management center, it also conducts two-way communication with many GPRS DTUs.

It is the more common method in the GPRS DTU software system at this stage.