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Full-spectrum water quality detection automatic calibration and window cleaning reminding system

A technology of water quality detection and automatic calibration, which is applied in the direction of color/spectral characteristic measurement, measuring device, and material analysis through optical means, and can solve the problems of inability to realize water quality detection and calibration functions, equipment detection windows, etc.

Active Publication Date: 2019-07-05
四川万江一泓环境科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the above-mentioned patent has improved how to clean the optical window, it can only perform the cleaning action passively, and cannot detect whether the window is polluted through the equipment, how polluted it is, whether it needs to be cleaned, etc., and cannot realize the function of water quality detection and calibration

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  • Full-spectrum water quality detection automatic calibration and window cleaning reminding system
  • Full-spectrum water quality detection automatic calibration and window cleaning reminding system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The full-spectrum water quality detection automatic calibration and window cleaning reminder system includes a water quality detection device and a calibration reminder device arranged side by side. The water quality detection device includes a wide-spectrum light source and a spectrometer at both ends. A window and a second window, the light emitted by the wide-spectrum light source passes through the first window and the second window in sequence; the calibration reminder system includes a laser and a photodetector located at both ends, the first window and the second window Located between the laser and the photodetector, the emitted light beam of the laser passes through the first window and the second window; the optical path of the emitted light beam of the laser is different from that of the light emitted by the broadband light source.

[0052] figure 1 The output beam of the laser output by the laser shown in , enters the water sample to be tested after passing ...

Embodiment 2

[0054] The working principle of the laser-assisted full-spectrum water quality detection automatic calibration and window cleaning reminder system is:

[0055] Step 1, calibrate the system, obtain the responsivity of the photodetector and the spectrometer, and calculate its ratio R;

[0056] Step 2, by measuring the standard sample with known absorbance, the value B of the system is obtained; B is a quantity defined according to the formula for convenience;

[0057] Step 3, calculate the absorbance α of the water sample at the corresponding wavelength of the laser through the output of the photodetector and the spectrometer;

[0058] Step 4, by calculating the absorbance α at this wavelength, calculate the light loss a caused by the window, and compare this value with the set threshold to determine whether it is necessary to remind the window to clean; the calculation here can use micro Processor automatically calculates.

[0059] Step 5, through the obtained optical loss a,...

Embodiment 3

[0061] The working principle of the laser-assisted full-spectrum water quality detection automatic calibration and window cleaning reminder system is:

[0062] Step 1, calibrate the system, obtain the responsivity of the photodetector and the spectrometer, and calculate its ratio R;

[0063] Step 2, by measuring the standard sample with known absorbance, the value B of the system is obtained; B is a quantity defined according to the formula for convenience;

[0064] Step 3, calculate the absorbance α of the water sample at the corresponding wavelength of the laser through the output of the photodetector and the spectrometer;

[0065] Step 4, by calculating the absorbance α at this wavelength, calculate the light loss a caused by the window, and compare this value with the set threshold to determine whether it is necessary to remind the window to clean; the calculation here can use micro Processor automatically calculates.

[0066] Step 5, through the obtained optical loss a,...

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Abstract

The invention belongs to the field of water quality detection, and particularly relates to a full-spectrum water quality detection automatic calibration and window cleaning reminding system. The full-spectrum water quality detection automatic calibration and window cleaning reminding system comprises a water quality detection device and a calibration reminding device, wherein the water quality detection device comprises a wide-spectrum light source and a spectrograph positioned at the two ends; a first window and a second window are arranged between the wide-spectrum light source and the spectrograph; the calibration reminding system comprises a laser and a photodetector positioned at the two ends; the first window and the second window are positioned between the laser and the photodetector; and an emergent light beam of the laser and emergent light of the wide-spectrum light source have different optical distances. By introducing auxiliary laser to be cooperated with the original wide-spectrum optical measurement of the system, the pollution condition on the surface of the window is monitored; when the pollution degree is low, the water quality detection result data based on wide-spectrum light can be corrected according to the monitoring result; the measurement inaccuracy due to window pollution is avoided; and equivalently, the system is automatically calibrated.

Description

technical field [0001] The application belongs to the field of water quality detection, and in particular relates to a full-spectrum water quality detection automatic calibration and window cleaning reminder system. Background technique [0002] When the full spectrum method is used to detect water quality, the water sample is located between the windows. After a long time of use, the window will be polluted, especially for the full-spectrum water quality sensor used in the field, this problem is more serious. When the window is polluted, the pollutants, sediment, etc. deposited on it will have a great impact on the measurement of turbidity, COD, etc., seriously affecting the measurement accuracy. Usually, the window needs to be cleaned regularly to ensure the accuracy of the measurement. At present, there is still a lack of methods that can automatically realize full-spectrum water quality detection and calibration, and deduct the impact of window pollution, and there is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/15
CPCG01N21/31G01N21/15G01N2021/157G01N2201/127G01N33/18G01N21/274G01N21/0303
Inventor 古艺苑李康李文驹胥杨艳
Owner 四川万江一泓环境科技有限责任公司