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US 2023/0113463 A1Published application
Apparatus and method for sensing water level
AssigneeNanokem Co., Ltd.
InventorsYoung-Hwan CHOI, Sung-An HA
Life of this patent
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Abstract
The present invention relates to an apparatus and a method for detecting a water level, which are capable of generating a water level detection signal which is alternating current output to a water level detection sensor by using two direct current control signals alternately output from a micom.
Claims9
A water level detection apparatus comprising:
- a micom outputting a first low water level control signal and a second low water level control signal which are square waves having a frequency, and have opposite phases, and receiving the water level detection signals for the first low water level control signal and the second low water level control signal, and performing a response operation;
- a control signal output unit receiving the first low water level control signal and the second low water level control signal, and outputs plus DC power and minus DC power having opposite phases for each of the first low water level control signal and the second low water level control signal;
- a conversion unit being applied with the plus DC power and the minus DC power, and outputting a water level monitoring signal which is AC power;
- a water level detection unit supplying the water level monitoring signal to a water level sensor, and outputting a water level detection signal when detecting a low water level of a predetermined reference or less;
- and
- a water level signal input unit receiving the water level detection signal and outputting the water level detection signal to the micom.
3 more elements
A water level detection method comprising:
- a water level monitoring request process of outputting a first low water level control signal and a second low water level control signal micom which are square waves having a frequency, and have opposite phases;
- a control signal output process of receiving, by a control signal output unit, the first low water level control signal and the second low water level control signal, and outputs plus DC power and minus DC power having opposite phases for each of the first low water level control signal and the second low water level control signal to a conversion unit;
- a water level monitoring signal conversion process of being, by a conversion unit, applied with the plus DC power and the minus DC power, and outputting a water level monitoring signal which is AC power;
- a water level detection process of supplying, by a water level detection unit, the water level monitoring signal to a water level sensor, and outputting a water level detection signal when detecting a low water level of a predetermined reference or less;
- a water level signal input process of receiving, by a water level signal input unit, the water level detection signal and outputting the water level detection signal to the micom;
- and
- a low water level response operation process of receiving, by the micom, the water level detection signals for the first low water level control signal and the second low water level control signal, and performing a response operation.
4 more elements
Dependencies are inferred from the claim text.