Dual-power automatic controller

Abstract

The invention aims to provide the dual-power automatic controller which is high in sampling precision and has an electric energy metering function. The system comprises a power supply module, an alternating current acquisition module, an electric energy metering module, an MCU module and a control module, the alternating current acquisition module is electrically connected with an external transformer, the alternating current acquisition module is electrically connected with the electric energy metering module, the chip model of the electric energy metering module is ATT7022E, and the MCU module is electrically connected with the control module. The electric energy metering module is in communication connection with the MCU module through an SPI (Serial Peripheral Interface) bus, the MCU module is electrically connected with the control module, the control module is electrically connected with a frequently-used power supply and a standby power supply, and the power supply module supplies power to the dual-power automatic controller to work. The invention is applied to the technical field of power supply control.

Description

technical field [0001] The invention is applied to the technical field of power supply control, and in particular relates to a dual power supply automatic controller. Background technique [0002] With the development of industry and the progress of science and technology, the continuity of power supply is an important part of social development. People have higher and higher requirements for the continuity of power supply. Most user departments use common power supply and backup power supply for continuous power supply. When a fault fails to work, the backup power supply will take over to maintain the normal operation of electrical equipment. At present, most automatic controllers with dual power supplies collect two AC voltages through single-chip microcomputers, and combined with the detected switch status, according to the set working mode and parameters Switch between main power supply and backup power supply. Most of the existing dual-power automatic controllers are c...

AI Technical Summary

Problems solved by technology

Most of the existing dual-power automatic controllers are controlled mechanically, with a single function, and the range of fixed values ​​cannot be changed, or a single-chip microcomputer is used to collect two AC voltages through the single-chip microcomputer, and combined with the detected switch state, according to the set working mode and parameters to switch between the main power supply and the backup power supply, but the sampling method of the single-chip microcomputer easily leads to limited measurement accuracy, power metering and power quality analysis functions, and three-level overcurrent protection functions are incomplete

Chinese patent CN103078394A discloses a dual-power automatic conversion controller, which intelligently judges the collected three-phase voltage and the standard setting value through the single-chip control circuit, and controls the positive and negative rotation of the motor control circuit to drive the motor to realize common power supply and backup Switching between power sources, since the single-chip microcomputer comes with AD for sampling, it is easy to affect the accuracy value, and it does not have the function of electric energy measurement, and cannot feed back the data of power quality. Therefore, it is necessary to provide a dual Power automatic controller

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