The wireless data transmission radio is simply the combination of the wireless data transmission module and various industrial communication interfaces. The wireless data transmission radio has the advantages of wide operating temperature range, excellent electromagnetic performance, strong anti-interference ability, and convenient installation. Let me introduce to you two DTUs, "E800-DTU" and "E810-DTU" wireless digital radio of Chengdu Ebyte Co., Ltd. and the application of radio in industrial control.
1. Introduction of E800-DTU
Application of industrial control of low-power wireless data transmission radio_Industrial Control
E800-DTU is a wireless data transmission station that adopts digital signal processing, digital modulation and demodulation, forward error correction, equalization soft decision and other functions. Different from analog FM radio plus MODEM analog digital radio, digital radio provides transparent RS232 or RS485 interface.
Features:
All core components are imported with original packaging. Compared with the current similar imported digital radios, the functions are the most advanced, the volume is the smallest, and the price is the best.
The transmission power is optional, and all technical indicators meet European industrial standards.
Using temperature compensated crystal oscillator, the frequency stability is better than ±2ppm.
Working temperature range: -40℃～+85℃, suitable for all kinds of harsh working environment, real industrial grade products. All aluminum alloy shell, compact size, easy installation, good heat dissipation; perfect shielding design, good electromagnetic compatibility, strong anti-interference ability.
Power reverse connection protection, over-connection protection, antenna surge protection and other multiple protection functions greatly increase the reliability of the radio.
Powerful software functions, all parameters can be set by programming: such as power, frequency, air rate, address ID, etc.
Ultra-low power consumption, the standby current is only 20mA (power saving mode and sleep mode consume less power), and the emission current is less than or equal to 350mA (at 1W).
Built-in watchdog, and accurate time layout, once an exception occurs, the module will automatically restart, and can continue to work according to the previous parameter settings.
2. Introduction of E810-DTU
Application of industrial control of low-power wireless digital radio_Data radio_02
E810-DTU is a small and powerful Ethernet to RF module. The transparent transmission between the RJ45 Ethernet interface and the wireless module is realized. The module can be connected to the host computer through the Ethernet interface to achieve high-speed transmission. Using the Ethernet interface allows the radio to be connected to the local area network, making the signal transmission distance more possible. sex.
The E810-DTU series can communicate with the same type of E800-DTU products, so that the data of the industrial site can be uploaded to the host computer in real time and saved.
3. Application of industrial control
3.1 Pipeline leak monitoring system
In my country, the number of pipelines for residential, commercial and industrial use is increasing day by day, such as natural gas pipelines. At present, natural gas transmission pipelines have entered thousands of households, and gas transportation is ubiquitous regardless of the size of the city. Therefore, gas pipeline leakage and flow monitoring are particularly important. Due to the wide distribution and long distance of gas pipeline inspection stations, it is difficult to use wired network communication. Wireless communication is used to realize data transmission, which has the advantages of convenient installation, convenient maintenance and migration, and low cost.
For pipeline monitoring, we collect pressure, temperature, and flow signals through terminal sensors and send them to the central control room regularly. Once an abnormal phenomenon is found, the central control room can realize sound and light alarms. This detection mechanism can almost achieve unattended, 24-hour supervision, which can also effectively avoid the harm caused by faults to the monitoring personnel.
In this application, E800-DTU can be used in terminal acquisition. The radio supports RS485/RS232 interface and can be connected with many acquisition sensors. In the data center, the E810-DTU can be used to connect with the computer to facilitate the analysis of the current monitoring data with the data center.
3.2 Intelligent irrigation control system
IoT irrigation systems are widely used in agriculture, garden maintenance, etc. As the environment changes, the value of water resources continues to appreciate, so the traditional irrigation method can no longer meet the needs of modern agriculture. Compared with the traditional irrigation method, the intelligent irrigation control system has the following advantages.
The use of wireless communication control avoids large-area wiring, saves costs, facilitates maintenance and installation.
Realize the integration of monitoring and irrigation, save human resources, and greatly improve labor efficiency.
The use of wireless control can realize the purpose of emergency irrigation in a long-distance and timely manner.
4. Summary
In general, using wireless digital radio to control industrial equipment can save complicated wiring, and wireless control can also improve the safety and work efficiency of manual field control. It is also extremely important for the realization of the control system to select the appropriate radio equipment according to the use environment.
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