Contact type liquid level detection circuit and electronic equipment

• Main Authors: WANG YU, XIE HAOBIN
• Format: Patent
• Language: Chinese; English
• Published: 29.03.2024
• Subjects: ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MEASURING; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL; METERING BY VOLUME; NATURALLY-OCCURRING ELECTRICITY; PHYSICS; STATIC ELECTRICITY; TESTING

The utility model relates to a contact type liquid level detection circuit and electronic equipment. The detection circuit comprises a first detection probe, a second detection probe, a pre-stage electrostatic protection unit, a post-stage electrostatic protection unit, a first power supply unit, a second power supply unit, an isolating switch unit and a detection signal output unit, wherein the first detection probe and the second detection probe are arranged corresponding to liquid level detection positions; the first power supply unit is connected with the first detection probe through the pre-stage electrostatic protection unit and is used for outputting power supply voltage when the first detection probe and the second detection probe are conducted; the isolation switch unit is connected with the second detection probe through the post-stage electrostatic protection unit and is used for receiving the power supply voltage to be conducted; the detection signal output unit is connected with the isolation sw