CN116223398A - Water, fertilizer and pesticide integrated concentration proportioning method based on spectral analysis - Google Patents
Water, fertilizer and pesticide integrated concentration proportioning method based on spectral analysis Download PDFInfo
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- 239000003337 fertilizer Substances 0.000 title claims abstract description 213
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000010183 spectrum analysis Methods 0.000 title claims abstract description 17
- 239000000575 pesticide Substances 0.000 title claims description 16
- 239000007788 liquid Substances 0.000 claims abstract description 339
- 238000001228 spectrum Methods 0.000 claims abstract description 250
- 239000003814 drug Substances 0.000 claims abstract description 177
- 239000003621 irrigation water Substances 0.000 claims abstract description 80
- 229940079593 drug Drugs 0.000 claims abstract description 21
- 238000004364 calculation method Methods 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 21
- 238000007865 diluting Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000002262 irrigation Effects 0.000 claims description 2
- 238000003973 irrigation Methods 0.000 claims description 2
- 239000012535 impurity Substances 0.000 abstract description 16
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000010790 dilution Methods 0.000 abstract description 6
- 239000012895 dilution Substances 0.000 abstract description 6
- 210000003608 fece Anatomy 0.000 abstract description 6
- 239000010871 livestock manure Substances 0.000 abstract description 6
- 230000003595 spectral effect Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 239000013307 optical fiber Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000001237 Raman spectrum Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
- B01F23/708—Filtering materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/80—Forming a predetermined ratio of the substances to be mixed
- B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/32—Mixing fertiliser ingredients
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
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Abstract
The invention provides a liquid manure and medicine integrated concentration proportioning method based on spectral analysis, which is characterized in that before liquid manure and medicine liquid are proportioned, whether impurities are contained in the liquid manure and the irrigation water or not is detected respectively; the liquid fertilizer and the irrigation water are detected through a spectrum curve, so that convenience and rapidness are realized; the concentration of the water and fertilizer liquid medicine after the proportion dilution is influenced by impurities in the water and fertilizer liquid medicine and irrigation water is avoided through detection. The current undiluted liquid fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid fertilizer liquid medicine spectrum curve, and the current undiluted liquid fertilizer liquid medicine does not contain impurities and can be used for proportioning; the current irrigation water spectrum curve is the same as the standard irrigation water spectrum curve, and the current irrigation water does not contain impurities and can be used for proportioning; further, when the water and fertilizer liquid is proportioned, the concentration of the diluted water and fertilizer liquid can be determined according to the current diluted water and fertilizer liquid spectrum curve; realizing the accurate proportioning of liquid medicines of water fertilizers with different concentrations.
Description
Technical Field
The invention relates to the technical field of water, fertilizer and medicine proportioning, in particular to a water, fertilizer and medicine integrated concentration proportioning method based on spectral analysis.
Background
Fertilizers are indispensable in agricultural production and have always played an important role in agricultural planting. When the fertilizer is scientifically mixed with water, the crop and the surrounding environment are negatively affected. In order to more accurately understand the proportion of each element in the fertilizer, a spectral analysis proportion method is generally adopted at present, proportion data are preset, liquid manure liquid medicine with different concentrations in the proportion data correspond to the intensities of different lights respectively, the light intensity formed by the light passing through the liquid manure liquid medicine is detected during proportion, and the concentration of the current liquid manure liquid medicine is obtained through the current light intensity; for example, the Chinese patent application number is CN201110331479.3 and publication date is 2012.06.13, which discloses a Raman spectrum shaping detection method for nitrogen form of compound fertilizer, and specifically discloses the method comprising the following steps: establishing a sample water solution characteristic peak position table of various known nitrogen forms and comparing a standard map thereof to obtain the nitrogen form of the compound fertilizer sample, wherein the structure can only confirm the components in the fertilizer, namely the prior proportioning method is used for filtering irrigation water before proportioning; if the water quality of the filtered irrigation water is not detected, if the filtered irrigation water still contains impurities, the irrigation water containing the impurities is mixed with the liquid fertilizer, and when light passes through the liquid fertilizer, absorption peaks can appear due to the existence of the impurities, so that the waveform of a spectrum is distorted; thus, the spectrum cannot correspond to preset proportioning data, and the concentration of the current liquid fertilizer can not be obtained according to the spectrum waveform.
Disclosure of Invention
The invention provides a water, fertilizer and pesticide integrated concentration proportioning method based on spectral analysis, which can continuously detect whether impurities are mixed in water, fertilizer and pesticide liquid and irrigation water during proportioning; realizing the accurate proportioning of liquid medicines of water fertilizers with different concentrations.
In order to achieve the above purpose, the technical scheme of the invention is as follows: a water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis comprises the following steps:
s1, pre-storing proportioning data, wherein the proportioning data comprise a wavelength range, a standard undiluted liquid fertilizer liquid medicine spectrum curve, a standard irrigation water spectrum curve and a standard diluted liquid fertilizer liquid medicine spectrum curve; the standard diluted liquid fertilizer liquid medicine spectrum curve comprises at least one concentration of liquid fertilizer liquid medicine.
The spectrum curve of the standard undiluted liquid fertilizer is the light intensity of the undiluted liquid fertilizer liquid medicine in the wavelength range after being filtered; the standard irrigation water spectrum curve is the light intensity of the standard irrigation water corresponding to the filtered irrigation water in the wavelength range; the spectrum curve of the standard diluted liquid fertilizer liquid medicine is the corresponding light intensity of the liquid fertilizer liquid medicines with different concentrations in the wavelength range.
S2, respectively filtering the liquid fertilizer and the irrigation water.
S3, passing the filtered liquid water and fertilizer into a first pipeline, and passing the filtered irrigation water into a second pipeline.
S4, acquiring a current undiluted water-fertilizer-liquid-medicine spectrum curve of the light source after passing through the first cuvette of the first pipeline, and acquiring a current irrigation water spectrum curve of the light source after passing through the second cuvette of the second pipeline.
S5, judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve, and if so, performing S6; if the liquid medicine is different, stopping inputting the liquid medicine, stopping proportioning the liquid medicine and exiting.
S6, judging whether the current irrigation water spectrum curve is the same as the standard irrigation water spectrum curve, and if so, performing S7; if the water and the fertilizer are different, stopping inputting irrigation water, stopping proportioning the liquid fertilizer and the liquid medicine, and exiting.
S7, inputting the liquid fertilizer medicine and irrigation water into a liquid mixing tank for mixing, and diluting the liquid fertilizer medicine by the irrigation water; the liquid mixing tank is connected with a third pipeline.
S8, acquiring a current diluted liquid fertilizer and liquid medicine spectrum curve of the light source passing through a third cuvette of the third pipeline, and if the current diluted liquid fertilizer and liquid medicine spectrum curve is the same as a spectrum curve corresponding to the liquid fertilizer and liquid medicine diluted to the specified concentration, performing S9.
S9, outputting the diluted liquid medicine of the water and fertilizer in the liquid mixing tank.
Before the liquid fertilizer is proportioned, the method respectively detects whether the liquid fertilizer and irrigation water contain impurities; the liquid fertilizer and the irrigation water are detected through a spectrum curve, so that convenience and rapidness are realized; the concentration of the water and fertilizer liquid medicine after the proportion dilution is influenced by impurities in the water and fertilizer liquid medicine and irrigation water is avoided through detection. The spectrum curve of the current undiluted liquid fertilizer liquid medicine spectrum is the same as the spectrum curve of the standard undiluted liquid fertilizer liquid medicine spectrum, and the current undiluted liquid fertilizer liquid medicine does not contain impurities and can be used for proportioning; the current irrigation water spectrum curve is the same as the standard irrigation water spectrum curve, and the current irrigation water does not contain impurities and can be used for proportioning; further, when the water and fertilizer liquid medicine is proportioned, the concentration of the diluted water and fertilizer liquid medicine can be determined according to the spectrum curve of the current diluted water and fertilizer liquid medicine spectrum; realizing the accurate proportioning of liquid medicines of water fertilizers with different concentrations.
Further, before S1, calculating actual calculation coefficients of the first cuvette, the second cuvette and the third cuvette, including the following steps:
a1, inputting the same liquid into the first pipeline, the second pipeline and the third pipeline.
A2, acquiring the light intensity k1 of the current first spectrum curve after the light source passes through the first cuvette, the light intensity k2 of the current second spectrum curve after the light source passes through the second cuvette, and the light intensity k3 of the current third spectrum curve after the light source passes through the third cuvette.
A3, calculating an actual calculation coefficient of the first cuvette through k2/k 1; the actual calculation coefficient of the third cuvette was calculated by k2/k 3.
In the method, as the first cuvette, the second cuvette and the third cuvette are different, the light can be lost to different degrees when passing through the first cuvette, the second cuvette and the third cuvette respectively; calculating actual calculation coefficients of the first cuvette and the third cuvette; making the actual calculation coefficients of the light source when passing through the first cuvette, the second cuvette and the third cuvette consistent; meanwhile, the same liquid is input into the first cuvette, the second cuvette and the third cuvette for detection, so that consistency is ensured.
Further, in S5, judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve; the method comprises the following steps: calculating the spectrum curve of the current undiluted liquid water and fertilizer liquid medicine according to the light intensity (k 2/k 1) of the spectrum curve of the current undiluted liquid water and fertilizer liquid medicine, and judging whether the actual spectrum curve of the current undiluted liquid water and fertilizer liquid medicine is identical to the spectrum curve of the standard undiluted liquid water and fertilizer liquid medicine spectrum.
According to the method, the actual calculation coefficient of the first cuvette is calculated, so that the actual wavelength of the current undiluted liquid water, fertilizer and liquid medicine spectrum is accurately obtained.
Further, in S8, judging whether the current diluted liquid fertilizer liquid medicine spectrum curve is the same as the liquid fertilizer liquid medicine spectrum curve diluted to the specified concentration; the method comprises the following steps: and calculating an actual spectrum curve of the current diluted liquid fertilizer liquid medicine according to the light intensity (k 2/k 3) of the current diluted liquid fertilizer liquid medicine spectrum curve, and judging whether the actual spectrum curve of the current diluted liquid fertilizer liquid medicine spectrum is identical to the standard irrigation water spectrum curve or not.
According to the method, the actual calculation coefficient of the third cuvette is calculated, so that the actual wavelength of the spectrum of the liquid fertilizer liquid medicine after current dilution is accurately obtained, and the accurate proportioning of the liquid fertilizer liquid medicine can be realized.
Further, in S1, the proportioning data further includes a standard spectrum curve of the light source; S4-S9, further comprising the steps of acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is identical to the standard spectrum curve of the light source in comparison; if the two are the same, S4-S9 are sequentially carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
According to the method, the current spectrum curve of the light source is detected in real time, so that the situation that the spectrum curve cannot correspond to the proportioning data due to the abnormal light source is avoided.
Drawings
Fig. 1 is a schematic diagram of a configuration device embodying the present invention.
Fig. 2 is a schematic diagram of a light source, a first cuvette, a second cuvette, a third cuvette and a detection device in a configuration device for implementing the present invention.
Fig. 3 is a flow chart of the present invention.
Fig. 4 is a spectrum curve formed by subtracting the light intensity of the spectrum curve of the standard irrigation water from the light intensity of the spectrum curve of the liquid fertilizer liquid medicine after standard dilution.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
As shown in fig. 1-2, a proportioning device comprises a first tank body 1, a second tank body 2, a liquid mixing tank 3, a light source 4 and a detection device; the output end of the first tank body 1 is connected with the input end of the first filter 11, and the output end of the first filter 11 is connected with the input end of the second filter 12; the output end of the second filter 12 is connected with the liquid mixing tank 3 through a first pipeline 13; the output end of the second tank body 2 is connected with the input end of a filter III 21, and the output end of the filter III 21 is connected with the input end of a filter IV 22; the output end of the filter IV 22 is connected with the liquid mixing tank 3 through a second pipeline 23; a stirring device (not shown in the figure) is arranged in the liquid mixing tank 3, and the stirring device is a waterproof stirring motor and a stirring blade connected with the waterproof stirring motor; the stirring device is used for mixing the liquid in the liquid mixing tank. The mixed liquid tank 3 is connected with a third pipeline 31, the mixed liquid tank 3 is also provided with an outlet 33 for outputting diluted liquid fertilizer and liquid medicine, and a third switch valve is arranged in the outlet 33. The first tank body 1 is internally provided with a liquid fertilizer and a liquid medicine, and the second tank body 2 is internally provided with irrigation water; the first pipe 13 is provided with a first on-off valve (not shown in the figures) and a first cuvette 14, the first on-off valve being arranged at the output of the first pipe 13; the second pipe 23 is provided with a second on-off valve and a second cuvette 24, and the second on-off valve is arranged at the output end of the second pipe 23.
The third pipe 31 is provided with a third cuvette 32; the light source 4 is disposed above the first cuvette 14, the second cuvette 24 and the third cuvette 32; the detection device comprises an optical fiber coupler 51 and a spectrometer 52, wherein the spectrometer 52 is arranged below the first cuvette 14, the second cuvette 24 and the third cuvette 32; in this embodiment, the light source 4 is connected to the optical switch, and when the light emitted by the light source passes through the liquid, the liquid absorbs and reflects the light of each wavelength in the wavelength range differently, so that different light intensities are generated by different wavelengths, and the light intensity corresponding to each wavelength forms a spectrum curve in the wavelength range.
The light switch controls the light source to alternately illuminate the first cuvette 14, the second cuvette 24, the third cuvette or directly illuminate the fiber coupler 51. The light emitted from the light source 4 is directly irradiated on the optical fiber coupler 51 or passes through the first cuvette 14, the second cuvette 24 and the third cuvette 32 to be irradiated on the optical fiber coupler 51; by switching the optical switch, the light source 4 irradiates one cuvette at a time or directly irradiates the optical fiber coupler 51. The fiber coupler 51 is connected to a spectrometer 52, the spectrometer 52 being capable of detecting the wavelength of the light source after it has passed through the first cuvette 14, the second cuvette 24 and the third cuvette 32; it is also possible to detect the wavelength of light directly irradiated from the light source 4 to the optical fiber coupler 51.
As shown in fig. 3-4, the water-fertilizer integrated concentration proportioning method based on spectral analysis comprises the following steps:
a1, inputting the same liquid into the first pipeline, the second pipeline and the third pipeline. In this embodiment, irrigation water is input into the first, second and third pipes.
A2, acquiring the light intensity k1 of the current first spectrum curve after the light source passes through the first cuvette, the light intensity k2 of the current second spectrum curve after the light source passes through the second cuvette, and the light intensity k3 of the current third spectrum curve after the light source passes through the third cuvette. In this embodiment, the light intensity k2 of the current second spectrum curve is a standard value.
A3, calculating an actual calculation coefficient of the first cuvette through k2/k 1; the actual calculation coefficient of the third cuvette was calculated by k2/k 3.
In this embodiment, the light intensity k2 of the second spectrum curve is preset as a standard value; if the light intensity k2 of the second spectrum curve is 100 and the light intensity k1 of the first spectrum curve is 200, the light intensity of the light source passing through the first cuvette is larger than the light intensity of the standard value, and the loss of the first cuvette is smaller than the loss of the second cuvette; to keep the loss of the first cuvette consistent with the loss of the second cuvette; the light intensity of the light source after passing through the first color plate needs to be reduced by 50% to be the same as the light intensity k2 of the second spectrum curve.
If the light intensity k2 of the second spectrum curve is 100 and the light intensity k1 of the first spectrum curve is 50, the light intensity of the light source passing through the first cuvette is smaller than the light intensity of the light source passing through the second cuvette, and the loss of the first cuvette is larger than the loss of the second cuvette; to keep the loss of the first cuvette consistent with the loss of the second cuvette; the light intensity of the light source passing through the first color comparison dish needs to be increased by 2 times to be the same as the light intensity k2 of the second spectrum curve.
In this embodiment, the light intensity k2 of the second spectrum curve is preset as a standard value; if the light intensity k2 of the second spectrum curve is 100 and the light intensity k3 of the third spectrum curve is 200, the light intensity of the light source passing through the third cuvette is larger than the standard value, and the loss of the third cuvette is smaller than the loss of the second cuvette; to keep the loss of the third cuvette consistent with the loss of the second cuvette; the light intensity of the light source after passing through the third cuvette needs to be reduced by 50% to be the same as the light intensity k2 of the second spectral curve.
If the light intensity k2 of the second spectrum curve is 100 and the light intensity k3 of the third spectrum curve is 50, the light intensity of the light source passing through the third cuvette is smaller than the light intensity of the light source passing through the second cuvette, and the loss of the third cuvette is larger than the loss of the second cuvette; to keep the loss of the third cuvette consistent with the loss of the second cuvette; the intensity of the light source passing through the third cuvette needs to be increased by 2 times to be the same as the intensity k2 of the second spectral curve.
S1, pre-storing proportioning data, wherein the proportioning data comprise a wavelength range, a standard undiluted liquid fertilizer liquid medicine spectrum curve, a standard irrigation water spectrum curve and a standard diluted liquid fertilizer liquid medicine spectrum curve; the standard diluted liquid fertilizer liquid medicine spectrum curve comprises at least one concentration of liquid fertilizer liquid medicine.
In this embodiment, the wavelength range of the light source is greater than the wavelength range of the proportioning data, which is 570-600nm; when the light emitted by the light source passes through the liquid, the liquid absorbs and reflects the light of each wavelength in the wavelength range differently, so that different light intensities are generated at different wavelengths in the wavelength range, each wavelength corresponds to one light intensity, and more than two wavelengths form a spectrum curve.
The spectrum curve of the standard undiluted liquid fertilizer is the light intensity of the undiluted liquid fertilizer liquid medicine in the wavelength range after being filtered; the standard irrigation water spectrum curve is the light intensity of the standard irrigation water corresponding to the filtered irrigation water in the wavelength range; the spectrum curve of the standard diluted liquid fertilizer liquid medicine is the corresponding light intensity of the liquid fertilizer liquid medicines with different concentrations in the wavelength range.
Referring to fig. 4, the spectrum curve in fig. 4 is a spectrum curve formed by subtracting the light intensity of the spectrum curve of standard irrigation water from the light intensity of the spectrum curve of standard diluted water-fertilizer liquid. V1 is the spectral curve of one of the diluted liquid water and fertilizer medicine solutions, V2 is the spectral curve of the other diluted liquid water and fertilizer medicine solution, and V3 is the spectral curve of the other diluted liquid water and fertilizer medicine solution.
Presetting the concentration of the diluted liquid fertilizer.
S2, respectively filtering the liquid fertilizer and the irrigation water.
S3, inputting the filtered liquid fertilizer and liquid medicine into a first pipeline, and inputting the filtered irrigation water into a liquid mixing tank.
S4, acquiring a current undiluted water-fertilizer-liquid-medicine spectrum curve of the light source after passing through the first cuvette of the first pipeline, and acquiring a current irrigation water spectrum curve of the light source after passing through the second cuvette of the second pipeline.
S5, judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve, and if so, performing S6; if the liquid medicine is different, stopping inputting the liquid medicine, stopping proportioning the liquid medicine and exiting. The judging method comprises the following steps: and calculating an actual spectrum curve of the current undiluted liquid water and fertilizer liquid medicine spectrum according to the light intensity (k 2/k 1) of the current undiluted liquid water and fertilizer liquid medicine spectrum curve, and judging whether the actual spectrum curve of the current undiluted liquid water and fertilizer liquid medicine spectrum is identical to the standard undiluted liquid water and fertilizer liquid medicine spectrum curve.
In the embodiment, calculating the difference between the second cuvette and the first cuvette through k2/k1, and determining the actual calculation coefficient of the first cuvette; if the light intensity k2 of the second spectrum curve is 100, the light intensity k1 of the first spectrum curve is 200, the actual calculation coefficient of the first cuvette is calculated to be 50% through k2/k1, and the actual spectrum curve of the current undiluted liquid water and fertilizer liquid medicine spectrum is calculated through the light intensity x (k 2/k 1) of the current undiluted liquid water and fertilizer liquid medicine spectrum. If the light intensity k2 of the second spectrum curve is 100, the light intensity k1 of the first spectrum curve is 50, the actual calculation coefficient of the first cuvette is calculated to be 2 through k2/k1, and the actual spectrum curve of the current undiluted liquid water and fertilizer liquid medicine spectrum is calculated through the light intensity x (k 2/k 1) of the current undiluted liquid water and fertilizer liquid medicine spectrum.
S6, judging whether the actual spectrum curve of the current irrigation water spectrum is the same as the spectrum curve of the standard irrigation water spectrum, and if so, performing S7; if the water and the fertilizer are different, stopping inputting irrigation water, stopping proportioning the liquid fertilizer and the liquid medicine, and exiting. Wherein the spectral profile of the spectrum of standard irrigation water is pre-set.
S7, opening the first switch valve and the second switch valve; the liquid fertilizer medicine and irrigation water are input into a liquid mixing tank for mixing, and the irrigation water dilutes the liquid fertilizer medicine; the mixed liquid fertilizer and water medicine flows into the third pipeline.
S8, acquiring a current diluted liquid fertilizer liquid medicine spectrum curve of the light source penetrating through a third cuvette of the third pipeline, if the current diluted liquid fertilizer liquid medicine spectrum curve is the same as a spectrum curve corresponding to the liquid fertilizer liquid medicine diluted to the specified concentration, performing S9, and if the current diluted liquid fertilizer liquid medicine spectrum curve is different from the spectrum curve corresponding to the liquid fertilizer liquid medicine diluted to the specified concentration, stopping proportioning the liquid fertilizer liquid medicine and exiting. The judging method comprises the following steps: and calculating an actual spectrum curve of the current diluted liquid fertilizer liquid medicine spectrum according to the light intensity (k 2/k 3) of the current diluted liquid fertilizer liquid medicine spectrum, and judging whether the length of the actual spectrum curve of the current diluted liquid fertilizer liquid medicine spectrum is the same as that of the standard irrigation liquid spectrum.
In the embodiment, calculating the difference between the second cuvette and the third cuvette through k2/k3, and determining the actual calculation coefficient of the third cuvette; if the light intensity k2 of the second spectrum curve is 100, the light intensity k3 of the third spectrum curve is 100, the actual calculation coefficient of the third cuvette is calculated to be 50% through k2/k3, and the actual spectrum curve of the current diluted liquid fertilizer liquid medicine spectrum is calculated through the light intensity x (k 2/k 3) of the current diluted liquid fertilizer liquid medicine spectrum. If the light intensity k2 of the second spectrum curve is 100 and the light intensity k3 of the third spectrum curve is 50, calculating the actual calculation coefficient of the third cuvette to be 2 through k2/k3, and calculating the actual spectrum curve of the current diluted liquid fertilizer liquid medicine spectrum through the light intensity x (k 2/k 3) of the current diluted liquid fertilizer liquid medicine spectrum curve. S7, opening the first switch valve and the second switch valve; the liquid fertilizer medicine and irrigation water are input into a liquid mixing tank for mixing, and the irrigation water dilutes the liquid fertilizer medicine; the liquid mixing tank is connected with a third pipeline. In the process of diluting the liquid fertilizer, the optical switch controls the light source to alternately irradiate the first cuvette, the second cuvette and the third cuvette; alternately acquiring an actual spectrum curve of the current undiluted water-fertilizer liquid medicine spectrum corresponding to the first cuvette and an actual spectrum curve of the current irrigation water spectrum corresponding to the second cuvette; if the actual spectrum curve of the current undiluted liquid water and fertilizer medicine spectrum is inconsistent with the standard undiluted liquid water and fertilizer medicine spectrum curve, closing the first switch valve and the second switch valve; and if the actual spectrum curve of the current irrigation water spectrum is inconsistent with the standard irrigation water spectrum curve, closing the first switch valve and the second switch valve.
S9, closing the first switch valve and the second switch valve, and opening the third switch valve; and outputting the diluted liquid medicine in the liquid mixing tank through a third pipeline.
In the method, as the first cuvette, the second cuvette and the third cuvette are different, the light can be lost to different degrees when passing through the first cuvette, the second cuvette and the third cuvette respectively; calculating actual calculation coefficients of the first cuvette and the third cuvette; making the actual calculation coefficients of the light source when passing through the first cuvette, the second cuvette and the third cuvette consistent; meanwhile, the same liquid is input into the first cuvette, the second cuvette and the third cuvette for detection, so that consistency is ensured. Before the liquid fertilizer is proportioned, detecting whether the liquid fertilizer and irrigation water contain impurities or not respectively; the liquid fertilizer and the irrigation water are detected through a spectrum curve, so that convenience and rapidness are realized; meanwhile, the influence of impurities in the liquid fertilizer medicine and irrigation water on the spectral curve of the liquid fertilizer medicine after the proportion dilution is avoided. The actual calculation coefficient of the first cuvette is calculated, so that the actual spectrum curve of the current undiluted liquid water-fertilizer liquid medicine is accurately obtained; and further accurately judging the spectrum curve of the current undiluted liquid fertilizer. The spectrum curve of the spectrum of the current undiluted liquid fertilizer is the same as the spectrum curve of the standard undiluted liquid fertilizer, and the current undiluted liquid fertilizer does not contain impurities and can be used for proportioning; the spectrum curve of the current irrigation water spectrum is the same as the spectrum curve of the standard irrigation water, and the current irrigation water does not contain impurities and can be used for proportioning; further, during proportioning, the actual spectrum curve of the spectrum of the liquid fertilizer and the liquid fertilizer after current dilution is accurately obtained by calculating the actual calculation coefficient of the third cuvette; the concentration of the diluted liquid fertilizer can be determined according to the spectrum curve of the current diluted liquid fertilizer; realizing the accurate proportioning of liquid medicines of water fertilizers with different concentrations.
In the above-mentioned method, the method comprises,
in S1, the proportioning data also comprises a standard spectrum curve of the light source; before S4, before S5, before S6, before S7 and before S8, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two types are the same, the next step is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines. By detecting the current spectrum curve of the light source in real time, the problem that the spectrum curve cannot correspond to the proportioning data due to the abnormality of the light source is avoided.
In the process of diluting the liquid fertilizer and the liquid medicine, when S7-S8 are carried out, the optical switch controls the light source to alternately irradiate the first cuvette, the second cuvette and the third cuvette; in this embodiment, the optical switch is manually controlled to switch. The spectrometer alternately acquires an actual spectrum curve of the current undiluted water-fertilizer liquid medicine spectrum corresponding to the first cuvette and an actual spectrum curve of the current irrigation water spectrum corresponding to the second cuvette; if the actual spectrum curve of the current undiluted liquid water and fertilizer medicine spectrum is inconsistent with the standard undiluted liquid water and fertilizer medicine spectrum curve, closing the first switch valve and the second switch valve, stopping inputting the liquid water and fertilizer medicine, stopping proportioning the liquid water and fertilizer medicine, and exiting; if the actual spectrum curve of the current irrigation water spectrum is inconsistent with the standard irrigation water spectrum curve, the first switch valve and the second switch valve are closed, the input of irrigation water is stopped, the proportioning of the liquid fertilizer and the liquid medicine is stopped, and the liquid fertilizer is withdrawn.
In another embodiment, when judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve, judging whether the actual spectrum curve of the current irrigation water spectrum is the same as the spectrum curve of the standard irrigation water spectrum, and judging that the current diluted liquid water and fertilizer liquid medicine spectrum curve is the same as the spectrum curve corresponding to the liquid water and fertilizer liquid medicine diluted to the specified concentration, respectively presetting an error range.
If the current undiluted liquid medicine spectrum curve is within the error range of the standard undiluted liquid medicine spectrum curve, the current undiluted liquid medicine spectrum curve is identical to the standard undiluted liquid medicine spectrum curve.
If the actual spectrum curve of the current irrigation water spectrum is within the error range of the spectrum curve of the standard irrigation water spectrum, the actual spectrum curve of the current irrigation water spectrum is identical to the spectrum curve of the standard irrigation water spectrum.
If the current diluted liquid fertilizer liquid medicine spectrum curve is within the error range of the spectrum curve corresponding to the liquid fertilizer liquid medicine diluted to the specified concentration, the current diluted liquid fertilizer liquid medicine spectrum curve is the same as the spectrum curve corresponding to the liquid fertilizer liquid medicine diluted to the specified concentration.
Claims (9)
1. A water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis is characterized in that: the method comprises the following steps:
s1, pre-storing proportioning data, wherein the proportioning data comprise a wavelength range, a standard undiluted liquid fertilizer liquid medicine spectrum curve, a standard irrigation water spectrum curve and a standard diluted liquid fertilizer liquid medicine spectrum curve; the standard diluted liquid water and fertilizer liquid medicine spectrum curve comprises at least one concentration of liquid water and fertilizer liquid medicine;
the spectrum curve of the standard undiluted liquid fertilizer is the light intensity of the undiluted liquid fertilizer liquid medicine in the wavelength range after being filtered; the standard irrigation water spectrum curve is the light intensity of the standard irrigation water corresponding to the filtered irrigation water in the wavelength range; the spectrum curve of the standard diluted liquid fertilizer liquid medicine is the corresponding light intensity of the liquid fertilizer liquid medicines with different concentrations in the wavelength range;
s2, respectively filtering the liquid fertilizer and the irrigation water;
s3, passing the filtered liquid fertilizer and water medicine through a first pipeline, and passing the filtered irrigation water through a second pipeline;
s4, acquiring a current undiluted water-fertilizer-liquid-medicine spectrum curve of the light source after passing through a first cuvette of the first pipeline, and acquiring a current irrigation water spectrum curve of the light source after passing through a second cuvette of the second pipeline;
s5, judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve, and if so, performing S6; if the liquid medicine is different, stopping inputting the liquid medicine, stopping proportioning the liquid medicine and exiting;
s6, judging whether the current irrigation water spectrum curve is the same as the standard irrigation water spectrum curve, and if so, performing S7; if the water and the fertilizer are different, stopping inputting irrigation water, stopping proportioning the liquid fertilizer and the liquid medicine, and exiting;
s7, inputting the liquid fertilizer medicine and irrigation water into a liquid mixing tank for mixing, and diluting the liquid fertilizer medicine by the irrigation water; the liquid mixing tank is connected with a third pipeline;
s8, acquiring a current diluted liquid fertilizer and liquid medicine spectrum curve of the light source after passing through a third cuvette of the third pipeline, and if the current diluted liquid fertilizer and liquid medicine spectrum curve is the same as a spectrum curve corresponding to the liquid fertilizer and liquid medicine diluted to the specified concentration, performing S9;
s9, outputting the diluted liquid medicine of the water and fertilizer in the liquid mixing tank.
2. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that: the method further comprises the step of calculating actual calculation coefficients of the first cuvette, the second cuvette and the third cuvette before the step S1, and comprises the following steps of:
a1, inputting the same liquid into a first pipeline, a second pipeline and a third pipeline;
a2, acquiring the light intensity k1 of a current first spectrum curve of the light source passing through the first cuvette, the light intensity k2 of a current second spectrum curve of the light source passing through the second cuvette, and the light intensity k3 of a current third spectrum curve of the light source passing through the third cuvette;
a3, calculating an actual calculation coefficient of the first cuvette through k2/k 1; the actual calculation coefficient of the third cuvette was calculated by k2/k 3.
3. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 2, wherein the water, fertilizer and pesticide integrated concentration proportioning method is characterized in that:
s5, judging whether the current undiluted liquid water and fertilizer liquid medicine spectrum curve is the same as the standard undiluted liquid water and fertilizer liquid medicine spectrum curve; the method comprises the following steps: and calculating an actual spectrum curve of the current undiluted liquid water and fertilizer medicine according to the light intensity (k 2/k 1) of the spectrum curve of the current undiluted liquid water and fertilizer medicine, and judging whether the actual spectrum curve of the current undiluted liquid water and fertilizer medicine is identical to the spectrum curve of the standard undiluted liquid water and fertilizer medicine.
4. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 2, wherein the water, fertilizer and pesticide integrated concentration proportioning method is characterized in that:
s8, judging whether the current diluted liquid fertilizer liquid medicine spectrum curve is the same as the spectrum curve corresponding to the liquid fertilizer liquid medicine diluted to the specified concentration; the method comprises the following steps: and calculating the actual spectrum curve of the current diluted liquid fertilizer liquid medicine according to the light intensity (k 2/k 3) of the current diluted liquid fertilizer liquid medicine spectrum curve, and judging whether the current diluted liquid fertilizer liquid medicine spectrum curve is identical to the standard irrigation liquid spectrum curve or not.
5. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that:
in S1, the proportioning data also comprises a standard spectrum curve of the light source; s4, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two are the same, S4 is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
6. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that:
in S1, the proportioning data also comprises a standard spectrum curve of the light source; s5, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two are the same, S5 is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
7. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that:
in S1, the proportioning data also comprises a standard spectrum curve of the light source; s6, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two are the same, S6 is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
8. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that:
in S1, the proportioning data also comprises a standard spectrum curve of the light source; s7, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two are the same, S7 is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
9. The water, fertilizer and pesticide integrated concentration proportioning method based on spectrum analysis as set forth in claim 1, wherein the method is characterized in that:
in S1, the proportioning data also comprises a standard spectrum curve of the light source; s8, acquiring a current spectrum curve of the light source in real time, and judging whether the current spectrum curve of the light source is the same as a standard spectrum curve of the light source in comparison; if the two are the same, S8 is carried out; if the water and fertilizer liquid medicines are different, stopping proportioning the water and fertilizer liquid medicines.
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