A single-phase alternating current intelligent control device and method

Abstract

The invention discloses a single-phase alternating current intelligent control device and a single-phase alternating current intelligent control method. The single-phase alternating current intelligent control device comprises a controller, a voltage sampling module, a current sampling module, an electric leakage protection module and a relay, wherein the voltage sampling module, the current sampling module and the electric leakage protection module are connected with a signal acquisition end of the controller respectively, an input end of the relay is connected with an output end of the controller, an output end of the relay is connected in series with electrical equipment and a single-phase power supply, the voltage sampling module is used for acquiring a voltage value of a power supplyinput end, the current sampling module is used for acquiring a value of a current, passing through a current transformer, of the power supply input end, the electric leakage protection module is usedfor acquiring a leakage current signal of the power supply input end, and the controller controls the on and off of the relay according to the voltage value, the current value and the leakage currentsignal. The single-phase alternating current intelligent control device and the single-phase alternating current intelligent control method provided by the invention have the advantage of high security.

Description

technical field [0001] The invention relates to the field of electric appliance control, in particular to a single-phase alternating current intelligent control device and method. Background technique [0002] At present, the control scheme of electrical equipment (such as washing machine) is mainly controlled by the high-current power switch and the main control switch, which are connected through the complicated connection of the power cord connector, and because the power switch and the main control switch are subjected to high current and strong voltage. control, the probability of damage is very high, which directly affects the life of the entire electrical equipment; moreover, the washing machine is mainly used in a humid and high-temperature environment, the main control switch is directly connected to the water pump motor, and the human body is directly exposed to the power switch and the main power switch with high current and high voltage. Once the electric leakage...

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Problems solved by technology

[0002] At present, the control scheme of electrical equipment (such as washing machine) is mainly controlled by the high-current power switch and the main control switch, which are connected through the complicated connection of the power cord connector, and because the power switch and the main control switch are affected by the high current and strong voltage. control, the probability of damage is very high, and directly affects the life of the entire electrical equipment; moreover, the washing machine is mainly used in a humid and high-temperature environment, the main control switch is directly connected to the water pump motor, and the human body is directly exposed to the power switch and the main power switch with high current and high voltage. Once the electric leakage or short circuit occurs, it will bring great hidden danger to the safety of the human body; the cleaning machine is used frequently in the market, especially in the enterprise stores for the purpose of cleaning. Once the switch fails or is damaged, the electrical appliances cannot work normally. work, and even cause a fire

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