Electronic liquid-level sensor
An electronic liquid level and sensor technology, applied in the field of electronic sensors, can solve the problems of high cost, poor precision of liquid sensors, unfavorable popularization, etc., and achieve the effects of low cost, corrosion prevention and high precision
Inactive Publication Date: 2019-07-09
SHANGLUO UNIV
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Problems solved by technology
In the prior art, most of them are divided into contact type and non-contact type liquid sensors, and the cost of high-precision liquid level sensors is high, which is not conducive to popularization, while the accuracy of low-cost liquid sensors is poor, or the contact type is easy to be used. Defects such as liquid corrosion, therefore, there is room for improvement
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[0010] The present invention will be further described below in conjunction with accompanying drawing:
[0011] Such as figure 1 As shown: the present invention includes a battery E, a first float switch K1, a second float switch K2, a first resistor R1, a second resistor R2, a third resistor R3, a light-emitting diode LED and a silicon controlled rectifier SCR. The first end of the first float switch is connected to the first end of the second float switch, the negative pole of the battery is connected to the first end of the third resistor and the negative pole of the thyristor at the same time, and the second end of the first float switch is connected to the first end of the first float switch. The first terminal of the resistor is connected to the first control signal output terminal of the electronic liquid level sensor, the second terminal of the second float switch is connected to the first terminal of the second resistor, and the second terminal of the second resistor ...
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The invention discloses an electronic liquid-level sensor. The electronic liquid-level sensor comprises a battery, a first floater switch, a second floater switch, a first resistor, a second resistor,a third resistor, a light-emitting diode and silicon controlled rectifier, wherein when the water level exceeds the first floater switch, the first floater switch is connected with the second floaterswitch, the light-emitting diode is lightened, the silicon controlled rectifier is switched on, control signals are output by a first control signal output end and a second control signal output end,a relay switch is connected with a water pump circuit, and a water pump starts pumping water; and when the water level falls below the second floater switch, the silicon controlled rectifier is switched off, and the water pump stops pumping water. Compared with the prior art, the buoyance switch is taken as a sensor, and metal parts in the sensors are not in contact with liquid in order to prevent the sensor corrosion phenomenon. Moreover, the direct contact type has high accuracy, and only a small quantity of electronic elements are adopted in the whole circuit, so that the electronic liquid-level sensor has relatively low cost and wide application value compared with a high-accuracy precise instrument.
Description
technical field [0001] The invention relates to the technical field of electronic sensors, in particular to an electronic liquid level sensor. Background technique [0002] Liquid level sensor (static pressure liquid level gauge / liquid level transmitter / liquid level sensor / water level sensor) is a pressure sensor for measuring liquid level. In the prior art, most of them are divided into contact type and non-contact type liquid sensors, and the cost of high-precision liquid level sensors is high, which is not conducive to popularization, while the accuracy of low-cost liquid sensors is poor, or the contact type is easy to be used. Defects such as liquid corrosion, therefore, there is room for improvement. Contents of the invention [0003] The object of the present invention is to provide an electronic liquid level sensor in order to solve the above problems. [0004] The present invention achieves the above object through the following technical solutions: [0005] The...
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Login to View More IPC IPC(8): G01F23/22G01F23/00
CPCG01F23/0007G01F23/22
Inventor 党楠
Owner SHANGLUO UNIV