Power supply for intelligent water pump controller

Abstract

The invention relates to the field of intelligent water pumps, and especially relates to a power supply for an intelligent water pump controller. The power supply comprises a commercial power input device, a bridge-type rectification circuit, and a voltage drop circuit. One end of the commercial power input device is electrically connected with the commercial power, and the other end of the commercial power input device is electrically connected with the input end of the voltage drop circuit through the bridge-type rectification circuit. The output end of the voltage drop circuit is electrically connected with the intelligent water pump. The power supply provided by the invention can be achieved through one integrated chip, three capacitors, four diodes and one inductor from the hardware aspect, and a transformer, an optical coupler and a reference source are avoided, thereby greatly reducing the cost of the power supply. Meanwhile, the conversion efficiency of the power supply can reach about 80%, and the power supply supplies stable and efficient power to a low-voltage control circuit.

Description

technical field [0001] The invention relates to the field of intelligent water pumps, in particular to a power supply for an intelligent water pump controller. Background technique [0002] A water pump is a machine that transports or pressurizes a liquid. It transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids including water, oil, acid and alkali, emulsions, and suspoemulsions. And liquid metal, etc., can also transport liquid, gas mixture and liquid containing suspended solids. At present, in order to realize the intelligent control of the water pump, the water pump controller is generally used on the water pump to start and stop the water pump according to the detected water source status, pipeline water consumption and pipeline pressure changes, so as to prevent the water pump from running dry. Wait for the unexpected to happen. [0003] At present, most o...

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Problems solved by technology

[0003] At present, most of them use a transformer to convert the mains voltage into a voltage that can be used by an intelligent water pump controller. For example, the Chinese patent application document with the application number 201510253872.3 discloses a water pump intelligent control circuit, including a transformer and a single-chip microcomputer circuit. One end of the transformer is connected to the power supply, and the other end of the transformer is connected to a DC conversion circuit, and the DC conversion circuit converts the 12V DC output by the transformer into 3.3V DC; the transformer is also connected to the relay breaking circuit, and the The relay breaking circuit is also connected with the single-chip microcomputer circuit, and the relay breaking circuit controls the operation and stop of the water pump motor according to the signal sent by the single-chip microcomputer circuit; wherein the power supply of the intelligent water pump motor adopts a transformer to convert the power supply voltage , in the actual process, other hardware is needed, the structure is complex and the cost is high

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