Dual-core OMAP-L138-based DTU platform

Abstract

The invention discloses a dual-core OMAP-L138-based DTU platform. A CPU is connected with a network module, an internal communication module, a communication module, a liquid crystal and key module, a watchdog circuit, a memory, a clock circuit, a hard disk and a lamp panel respectively, wherein the network module is connected with the communication module; the liquid crystal and key module is connected with the communication module and the network module; and the liquid crystal and key module is also connected with the lamp panel. With a dual-core OMAP-L138 as the CPU, the operation processing speed is greatly improved; A / D adoption is carried out on telemetry data collection and adoption by an alternating current sampling plate; and a sampling value is transmitted to the dual-core OMAP-L138 to carry out a protection operation through an internal bus, so that the operation processing speed is relatively high; the accuracy is relatively high; and the dual-core OMAP-L138 supports a real-time multi-task scheduling system to finish scheduling and processing of an underlying management task, a user application task and an interrupt response task. Therefore, the instantaneity is good and the efficiency is high.

Description

technical field [0001] The invention relates to intelligent monitoring and management technology of distribution network, in particular to a DTU platform based on dual-core OMAP-L138. Background technique [0002] After substation automation and scheduling automation are researched and promoted in my country, the further development is the distribution automation system; the distribution system automation system applies modern electronic technology, communication technology, computer and network technology to integrate real-time information of distribution network, User information, power grid structure parameters, and geographic information are safely integrated to form a complete automated management system to realize the monitoring, protection, control, and distribution management of the power distribution system in normal operation and in case of accidents. [0003] The DTU platform uses computer technology, automatic control technology, electronic technology, communicati...

AI Technical Summary

Problems solved by technology

[0003] The DTU platform uses computer technology, automatic control technology, electronic technology, communication technology and A / D sampling technology to intelligently monitor and manage the 10KV distribution network, but the existing CPU does not support the embedded operating system, and the program design can only be The main program plus a simple interrupt mode, because there is no concept of task scheduling, the performance of the terminal responding to external events is affected by the cycle of the main program, and it cannot respond to the time of external occurrences in a fixed, effective and fast manner, resulting in various performance indicators such as accuracy and stability. performance, anti-interference, and response time cannot meet the requirements; and due to the limitation of CPU computing power, the protection part can only use lower sampling points, and the communication cannot meet the real-time requirements of the current protocol; the serial port of the current DTU platform Neither Ethernet nor the number of supported intervals can fully meet the requirements of the technical conditions of the State Grid

And the scalability is poor and the flexibility is not strong

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