Probe circuit of water pump controller and method thereof

Abstract

The invention relates to a probe circuit of a water pump controller. The circuit includes a power source, and the power source is electrically connected with a low probe, a middle probe and a high probe; pressure sensors are arranged on the low probe, the middle probe and the high probe; the low probe is electrically connected with a low water-level detection circuit for detecting the water level,the middle probe and the high probe are electrically connected with a high water level detection circuit for detecting the water level, and the probe circuit further includes an anti-interference circuit, an optical coupler insulating circuit and a half-wave rectifying circuit; the anti-interference circuit, a signal amplifying circuit, the optical coupler insulating circuit and the half-wave rectifying circuit are electrically connected with the low probe, the middle probe and the high probe respectively. The circuit is reasonable in design, relatively simple in structure, high in anti-interference capability and accurate in signal detection.

Description

technical field [0001] The invention relates to the field of water pumps, in particular to a probe circuit of a water pump controller and a method thereof. Background technique [0002] The water pump controller starts or stops the water pump according to the detected water source status. At present, most of the water pump controllers on the market are powered by a circuit composed of a triode and a relay, and the water source status is judged by the probe detection signal, but Such a circuit has poor anti-interference ability and low signal sensitivity. A probe circuit of the water pump controller with simple circuit structure and strong anti-interference ability is proposed now. Contents of the invention [0003] In order to achieve the above object, the present invention adopts the following technical scheme: a probe circuit of a water pump controller, including: a power supply, the power supply is electrically connected with a low probe, a middle probe and a high prob...

AI Technical Summary

Problems solved by technology

[0002] The water pump controller starts or stops the water pump according to the detected state of the water source. At present, most of the water pump controllers on the market are powered by a circuit composed of a triode and a relay, and the water source is judged by the probe detection signal. However, Such a circuit has poor anti-interference ability and low signal sensitivity.

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