Arm-based Motor Protection Device Design

By analyzing the situations of the motor protecting system home and abroad, aiming at today's situation of motor protecting, this thesis shows an embedded motor protecting system. The system based on ARM microprocessor. Comparing to traditional protecting system, this scheme has the characteristics of small volume, low cost, high stability and etc, therefore, it has good applied and development outlook. t.This equipment is able to collect the signals of voltage, current, to make protection algorithm with the sample data, to monitor the motor status, to switch off the motor immediately once there's any troubles. The thesis completed both hardware design and software development.Hardware aspect, by using S3C2410 as its CPU ,the motor protecting system use the A/D converter of S3C2410 to acquire the input three-phase alternating current and voltage of motor. The human-computer interaction is realized by 4*4 keyboard and LCD screen.The thesis divides software aspect into two parts: build developing environment and develop applied software. Developing environment includes the replant of BootLoader and embedded Linux to ARM platform, the building of cross compile environment.Applied software includes drivers,Qt interface program and intelligentialized protecting program.At the end, the thesis summarized the completed works, and gives the method of further improves.