Detection device, detection method, water quality detection equipment and water purification device

A technology of detection device and detection method, which is applied in measurement devices, instruments, material analysis by electromagnetic means, etc., can solve the problems of low measurement accuracy and parasitic capacitance affecting measurement accuracy, etc.

Active Publication Date: 2021-02-02
FOSHAN SHUNDE MIDEA WATER DISPENSER MFG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In related technologies, although the polarization phenomenon can be suppressed to a certain extent by using alternating current for conductivity measurement, the parasitic capacitance will still affect the measurement accuracy, resulting in low measurement accuracy

Method used

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  • Detection device, detection method, water quality detection equipment and water purification device
  • Detection device, detection method, water quality detection equipment and water purification device
  • Detection device, detection method, water quality detection equipment and water purification device

Examples

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Embodiment 1

[0060] figure 1 A schematic block diagram of a detection device according to an embodiment of the present invention is shown.

[0061] Such as figure 1As shown, the first detection device 100 according to an embodiment of the present invention is suitable for TDS detection, and the first detection device 100 includes: a first processor 102 capable of sending an excitation signal to the solution to be tested; Sampling the corresponding response signal and performing analog-to-digital conversion on the sampling result to generate the sampling and analog-to-digital converter 104 of the analog-to-digital conversion data; when performing total dissolved solid detection, the first processor 102 sends an excitation signal to the solution to be tested , the excitation signal is transmitted to the sampling and analog-to-digital converter 104 through the response signal generated by the solution, the sampling and analog-to-digital converter 104 samples the response signal, generates a ...

Embodiment 2

[0066] figure 2 A schematic block diagram of a second detection device 200 according to another embodiment of the present invention is shown.

[0067] Such as figure 2 As shown, the second detection device 200 according to another embodiment of the present invention is used to detect the total dissolved solids in the solution, and includes a second processor 202 that is also used to send an excitation signal as the first processor 102; The difference from the first detection device 100 is that the sampling and analog-to-digital converter 104 in the first detection device 100 is divided into a sampling circuit 204 and an analog-to-digital conversion circuit 206 in this embodiment. During the detection process, the sampling and The analog-to-digital conversion is also performed separately, that is, the response signal corresponding to the excitation signal is sampled by the sampling circuit 204 and when the second processor 202 receives the sampling result, it stops sending t...

Embodiment 3

[0080] image 3 A schematic flowchart of a detection method according to an embodiment of the present invention is shown.

[0081] Such as image 3 As shown, the detection method according to an embodiment of the present invention includes: Step S302, sending an excitation signal to the solution to be tested; Step S304, sampling the response signal and performing analog-to-digital conversion on the sampling result, generating and saving the analog-digital Converting data; step S306, stop sending the excitation signal when the analog-to-digital conversion data is generated; step S308, determine the total dissolved solids value according to the analog-to-digital conversion data.

[0082] In this embodiment, the excitation signal is stopped when the analog-to-digital conversion data is generated, that is, the duration of the excitation signal is equal to the sum of the sampling duration and the analog-to-digital conversion, the duration of the excitation signal is shortened to t...

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Abstract

The present invention provides a detection device, a detection method, water quality detection equipment and a water purification device, the detection device comprises: a processor for sending an excitation signal to a solution; a sampling and analog-to-digital converter used for sampling a response signal corresponding to the excitation signal and performing analog-to-digital conversion on a sampling result to generate analog-to-digital conversion data, and stopping sending the excitation signal when receiving the analog-to-digital conversion data; and a processor which determines a total dissolved solid value according to the analog-to-digital conversion data. According to the technical scheme, the polarization phenomenon and the duration of the parasitic capacitance are shortened to the maximum extent, the influence of the polarization phenomenon and the duration of the parasitic capacitance on the measurement accuracy of the total dissolved solid value is reduced, and the detection device is simple in structure and control method and easy to control.

Description

technical field [0001] The invention relates to the field of water quality detection, in particular to a detection device, a detection method, a water quality detection device and a water purification device. Background technique [0002] Total dissolved solids (TDS, Total dissolved solids), measured in milligrams per liter (mg / L) or ppm, refers to how many milligrams of dissolved solids are dissolved in 1 liter of water. The higher the TDS value, the more dissolved substances in the water. Generally, TDS detection can be equivalent to conductivity detection, the higher the conductivity, the higher the TDS. In non-industrial and non-laboratory analysis circuits, considering the measurement range, accuracy and cost requirements, the voltage division method and the oscillation method are more common. [0003] In conductivity detection, the solution is generally measured as resistance, but the system composed of electrodes and solution is not equivalent to a pure resistance c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/06G01N27/04
CPCG01N27/06G01N27/045
Inventor 裴幸
Owner FOSHAN SHUNDE MIDEA WATER DISPENSER MFG
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