Intelligent Field Calibrator for Backup Power Auto-switch-on Device
Gao Guo-fu · Yibiao jishu yu chuanganqi · 2012
This paper designed an intelligent field calibrator based on μC/OS-Ⅱ real-time operating system and ARM microprocessor.The calibrator integrated kinds of connection rules and calibration logic by adopting the modular design approach and all-digital simulation method.It simulated the breakers,voltages and currents of actual line through the relays,three-phase programmable voltage sources and current sources respectively.The calibrator sampled the actions and time sequences of the backup power auto-switch-on device,through whose output channels.Applying the preset rule and calibration logic,the calibrator generated the action signals in sequence to the backup power auto-switch-on device as well to calibrate its work state.A detailed description about the system architecture,the key hardware design,and the implementation of embedded software were presented.Currently,the designed calibrator has been put into practice in field testing applications.The test results show that the calibrator has good functionality and performance,friendly interface,stable work,and can meet the field calibration requirements.