Intelligent double-electric power supply changover apparatus

• Main Authors: CUIJU XIE, YINGCHUN FENG, YAPING SUN
• Format: Patent
• Language: English
• Published: 10.12.2003
• Edition: 7
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The utility model relates to an intelligent double-power supply changeover apparatus, which belongs to the power supply equipment. The utility model comprises a changeover switch which is respectively connected with two paths of leading-in lines and one path of leading-out line. The apparatus also comprises a CPU circuit, and the signal input terminal of the CPU circuit acquires the voltage signal and the current signal from the two paths of leading-in lines and the one path of leading-out line by a signal converting circuit and a signal amplifying circuit. The switch signal output terminal of the CPU circuit is connected with a control relay in order to control the changeover switch to carry out changeover. The CPU circuit is also respectively connected with a liquid crystal display circuit, a keyboard circuit, a communication interface circuit and a memory circuit. An AC relay and a rectifying voltage stabilizing circuit are connected with the two paths of leading-in lines in order to provide working power supply to the CPU circuit and the liquid crystal display circuit. The utility model has the advantages of simple structure of the main circuit of the power supply, convenient construction and high reliability. The utility model can realize real-time intelligent communication and improve the reliability of automatic changeover in the state of unattended operation.