Cost-controlled circuit breaker control system and control method with low cost and low standby power consumption

Abstract

The invention discloses a cost control breaker control system and control method capable of realizing low cost low standby power consumption. The control system comprises a circuit portion and a non-circuit portion, wherein the circuit portion comprises a power power-supply module, a linear power-supply module, a motor driving module, a controller module and a cost control signal reception module, and the non-circuit portion comprises a limit switch / a mode selection switch, an actuating motor and a casing transmission structure. The control system is advantaged in that great cost and volume advantages are realized, strong EMC endurance is realized, normal control logics under surge, rapidly-changed pulse and electrostatic discharge interference can be guaranteed, and all cost control functions can be realized only through utilizing an eight-pin 51-cone single-chip microcomputer as a controller cooperating with passive devices e.g., a few of resistor capacitors.

Description

technical field [0001] The invention relates to the design field of home circuit breakers and board-level circuits, and is particularly suitable for controlling the opening and closing circuits of air switches under the presence of external fee control signals. Background technique [0002] Household circuit breaker, also known as air switch, is a low-voltage circuit breaker. It is a switch that will automatically disconnect as long as the current in the circuit exceeds the rated current. The air switch is a very important electrical appliance in the low-voltage power distribution network and electric drive system. It integrates control and multiple protection functions. In addition to completing the contact and breaking of the circuit, it can also protect the short circuit and severe overload of the circuit or electrical equipment. [0003] The circuit breaker used by the smart meter (that is, the fee-controlled circuit breaker) has added the function of power-off due to ...

AI Technical Summary

Problems solved by technology

[0004] Most of the current cost-controlled circuit breaker products use transformer-isolated AC / DC converters for power supply, and use single-chip microcomputers with 20 pins or more for control, which has the defects of complex circuits, high cost and large volume, which reduces reliability.

At the same time, complex circuits are not conducive to integrating other protection circuits in a limited space

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