rtu equipment refers to "remote terminal equipment", which is an electronic device installed at a remote site and is used to monitor and measure sensors and equipment installed at a remote site; rtu equipment integrates data collection, transmission, and storage functions. Integrated with low power consumption design, it is especially suitable for monitoring sites powered by solar energy. It can greatly reduce the cost of solar power supply and reduce the difficulty of construction. It is widely used in meteorology, hydrology, water conservancy, geology and other industries.
The operating environment of this tutorial: Windows 7 system, Dell G3 computer.
Introduction to the concept of RTU
The full name of RTU in English is Remote Terminal Units, and in Chinese it is called Remote Terminal Unit.
Remote terminal equipment (RTU) is an electronic device installed at a remote site and used to monitor and measure sensors and equipment installed at the remote site. RTU converts measured states or signals into a data format that can be sent over a communications medium. It also converts data sent from the central computer into commands to realize functional control of the equipment. RTU is mainly used in industry, agriculture, water conservancy, electric power, environmental protection, meteorology, earthquake, transportation, energy, commercial fields, etc.
Main features of RTU
RTU is the most basic component unit of the SCADA system. As an electronic device installed at a remote site, RTU's function is mainly to monitor and measure sensors and other detection equipment installed at the work site. Its main purpose is to facilitate the supervision and measurement of signals and industrial devices at the remote work site. Control, RTU can not only convert the measured equipment status or the signal obtained by equipment measurement into a data format that can be sent on the communication media, it can also convert the data sent by the central computer into commands, thereby completing the control Functional control of the device.
RTU can generally be divided into two types: "single board RTU" and "module RTU". "Single-board RTU" integrates all I/O interfaces in one version. "Module RTU" is relatively simple in structure because it only has a single CPU module. Not only that, but it can also have other add-ons. Modules, basically these additional modules are implemented by adding a "backplane".
As a very durable remote field detection and control device, RTU can support communication between the SCADA control center and remote field devices. It is a separate data acquisition and control unit. Its main function is to control remote worksite equipment, thereby obtaining equipment data, and transmit the data to the dispatch center of the SCADA system.
RTU main functions
Communication function: supports GPRS, short message, satellite and other communication methods; supports multi-center Carry out data communication; support two working modes: real-time online and scheduled wake-up.
Collection function: collect standard signals of water level and rainfall transmitters; collect flow data of flow meters and pulse meters; collect water pump or valve operating status, equipment power supply status and door opening and closing status.
Picture capture function: You can connect an external industrial camera to capture pictures.
Control function: supports automatic control, remote control of water pumps, valves and other control equipment.
Alarm function: If the monitoring data exceeds the limit, the alarm information will be reported immediately.
Storage function: This machine stores monitoring data cyclically and will not be lost when the power is off.
Main applications of RTU
Telemetry terminal RTU can perform remote control, telemetry, remote signaling and remote adjustment in remote working environments, so the telemetry terminal RTU machine is very suitable for harsh environments workplace.
rtu equipment integrates data collection, transmission and storage functions. It adopts low power consumption design and is especially suitable for solar powered monitoring sites. It can greatly reduce the cost of solar power supply and reduce the difficulty of construction
RTU products are widely used in oil and gas, hydrology and water conservancy, power dispatching, municipal dispatching and other industries.
What are the differences between RTU and DTU
RTU is generally used for monitoring, control and data collection applications. It has telemetry, remote signaling, remote adjustment and remote control functions. It usually integrates analog and digital inputs and outputs, PMW control, counters, RS232 and RS485 interfaces, and also has the function of a wireless router. DTU is a wireless transparent transmission device. It is a wireless terminal device specially used to convert serial port data into IP data or convert IP data into serial port data for transmission through a wireless communication network.
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