Distributed RTU (Remote Terminal Unit) system

Abstract

The invention discloses a distributed RTU (Remote Terminal Unit) system, which comprises a host, a main controller, a DTU (Data Transfer Unit), a main CAN (Controller Area Network) bus, an extension CAN bus, a CAN bus relay, a plurality of RUTs and a plurality of sensors, wherein the RTUs are connected with a field sensor and field equipment, and are connected with the main CAN bus or the extension CAN bus; the extension CAN bus is connected with the main CAN bus through the CAN bus relay; the main CAN bus is connected with the main controller; the main controller is connected with the host through the DTUs. By adopting the distributed RTU system, the workload of the MCU of the main controller is reduced, the wiring complexity is lowered, subsequent maintenance and upgrade costs are reduced, and the equipment cost is reduced. The running state of each station can be monitored, and the RTU of each station can be controlled, so that convenience is brought to field maintenance and debugging.

Description

technical field [0001] The invention relates to a remote control system, in particular to a distributed RTU system applied in the field of water supply pipe network monitoring, which belongs to the technical field of water conservancy resources. Background technique [0002] RTU is a device that can automatically complete the collection, storage, transmission and control of hydrological (water regime, water resources) parameters. In pipe network monitoring, RTU is mainly used for water metering, pressure measurement and providing on-site data for pipe network monitoring. At present, RTU mainly uses a single MCU in the monitoring of the water supply network. The MCU not only manages the on-site sensors and controls the actuators, but also undertakes the task of communicating with the upper computer management system, which may easily cause the MCU to be overloaded; especially for multi-site, multi- The on-site wiring method of parameter monitoring is complicated, which incre...

AI Technical Summary

Problems solved by technology

At present, RTU mainly uses a single MCU in the monitoring of the water supply network. The MCU not only manages the on-site sensors and controls the actuators, but also undertakes the task of communicating with the upper computer management system, which may easily cause the MCU to be overloaded; especially for multi-site, multi- The on-site wiring method for parameter monitoring is complicated, which increases labor costs; additional RTU equipment is required for additional sites in the later period, and wiring is re-routed, which increases maintenance and upgrade costs; DTU communication modules need to be placed in each RTU equipment, which increases equipment costs

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