Liquid detection device and control method thereof
A technology for detecting devices and liquids, which can be used in measuring devices, instruments, scientific instruments, etc., and can solve problems such as contamination and damage of liquid sensors
Inactive Publication Date: 2014-12-17
常州智能农业装备研究院有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide a liquid detection device and its control method to solve the problem in the prior art that the liquid sensor is easily damaged by the liquid to be measured
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[0013] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0014] figure 1 It is a structural diagram of an embodiment of the liquid detection device of the present invention. As shown in the figure, the liquid detection device of this embodiment includes a sensor 11, a sampling chamber 12, an electric control valve 13, a liquid storage tank 14, a nozzle 15, an air pump 16 and a control Circuit 17. Wherein, the sampling chamber 12 and the liquid storage tank 14 are all immersed in the liquid 20 to be tested; the sensor 11 is placed in the sampling chamber 12; the top of the sampling chamber 12 is connected to the electric control valve 13 through the first pipe body 18; the nozzle 15 is arranged on The bottom of the sampling chamber 12, and the nozzle 15 is connected with the liquid storage tank 14 and the air pump 16 successively through the second pipe body 19, and the electric control valv...
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The invention relates to a liquid detection device, which comprises a sensor, a sampling chamber, an electric control valve, a liquid storage tank, a spray nozzle, an air pump and a control circuit. The sampling chamber and the liquid storage chamber are immersed in liquid to be detected. The sensor is arranged in the sampling chamber. The top of the sampling chamber is connected with the electric control valve through a first pipe body. The spray nozzle is arranged at the bottom of the sampling chamber and is sequentially connected with the liquid storage tank and the air pump through a second pipe body. The electric control valve and the air pump are arranged above the surface of the liquid to be detected. The control circuit is respectively and electrically connected with the electric control valve and the air pump and controls the electric control valve and the air pump to be conducted alternately. The invention additionally relates to a control method of the liquid detection device. The liquid detection device provided by the technical scheme has the advantages that the alternate conduction of the valve and the air pump is realized through the control circuit, the built-in sensor can be ensured to be in contact with the liquid to be detected only during data acquisition and can be washed by using the spray nozzle when data is not acquired, and the goal of prolonging the service life of the sensor is achieved.
Description
technical field [0001] The invention relates to a device for measuring liquid characteristic parameters, in particular to a liquid detection device and a control method thereof. Background technique [0002] At present, liquid sensors are needed in many occasions in industrial or civil fields to detect certain parameters of water or other liquids (for example, dissolved oxygen concentration), but these detected liquids are more or less polluted. As a result, the surface of the sensor detection element or the sensor itself may be covered by dirt, damaged or corroded, resulting in sensor failure and reduced service life. Contents of the invention [0003] The object of the present invention is to provide a liquid detection device and its control method, so as to solve the problem in the prior art that the liquid sensor is easily damaged by the liquid to be measured. [0004] In order to achieve the above object, the technical solution of the present invention proposes a liq...
Claims
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IPC IPC(8): G01N33/00
Inventor 庄宪倪秉成徐传国何宏业
Owner 常州智能农业装备研究院有限公司