Load automatic selecting and switching device based on control of single-chip microcomputer

• Main Authors: SUN LEI, ZHANG MIN, ZHANG CHANGLU, GUO TINGHUI, XU LANFU, SHI FENGQI
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2017
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to a load automatic selecting and switching device based on the control of a single-chip microcomputer. The device comprises an AC voltage sampling and transmitting circuit, a single-chip microcomputer processor and an output control circuit, wherein the AC voltage sampling and transmitting circuit, the single-chip microcomputer processor and the output control circuit are electrically connected in sequence. The AC voltage sampling and transmitting circuit comprises a current-limiting resistor, a high-precision current transformer, a precision current-detecting amplifier and an A/D converter, wherein the current-limiting resistor, the high-precision current transformer, the precision current-detecting amplifier and the A/D converter are electrically connected in sequence. The single-chip microcomputer processor comprises a 51 single-chip microcomputer. The output control circuit comprises a photoelectric coupler, a short circuit-prevention circuit, a solid relay and an electric leakage p