Direct-current intelligent control device and method

Abstract

The invention discloses a direct-current intelligent control device and method. The device comprises a controller, a voltage sampling module, a current sampling module and a relay; the voltage sampling module and the current sampling module are connected with the signal acquisition end of the controller; the input end of the relay is connected with the output end of the controller, and the outputend of the relay is connected with electrical equipment and a direct-current power supply in series; the voltage sampling module is used for acquiring a voltage value of the input end of the power supply; the current sampling module is used for acquiring a value of a current, passing through a measuring resistor, of the input end of the power supply; and the controller controls opening and closingof the relay according to the voltage value and the current value. The direct-current intelligent control device and method provided by the invention has the advantage of being high in safety.

Description

technical field [0001] The invention relates to the field of electric appliance control, in particular to a direct 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 or short circuit ...

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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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