Method for collecting soil spectral data based on mobile phone
A technology of spectral data and collection methods, applied in the measurement of color/spectral characteristics, material analysis by optical means, measurement devices, etc., can solve the problems of lack of customized collection and analysis software, inability to return to analysis in real time, and high equipment cost, achieving Measure fast, fast inversion, low cost effects
Inactive Publication Date: 2020-02-14
北京绿土科技有限公司
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[0006] Most of the traditional field spectrum collection work is oriented towards scientific research. The cost of equipment is high, the volume is large, and there is a lack of professional custom collection and analysis software. Field measurement often cannot return the analysis results in real time.
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[0024] DETAILED DESCRIPTION As shown in the accompanying drawings, the figure 1 Showed the whole implementation process of the present invention. The spectral data acquisition is performed by the mobile phone and an external spectral acquisition module (such as figure 2 )get. The spectrum module is composed of the first mirror group, small hole, second mirror group, grating or prism, third mirror group and detector arranged in sequence. The light emitted by the subject is imaged on the small hole through the first mirror group, and then passes through the second After the second mirror group is collimated, the light of different wavelength bands is split by a grating or prism, and then converged to the detector by the third mirror group for imaging, which can realize the spectral detection of point targets.
[0025] The inversion model is to combine the spectral data in the spectral library with the matching geochemical data according to the block of the map, and measure th...
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The invention discloses a method for collecting soil spectral data based on a mobile phone. The method comprises the steps of: step 1. turning on the App, GPS and Bluetooth of the mobile phone; step 2. clicking a collection button at an app end of the mobile phone, collecting, by a spectrum module, spectral data, establishing a sample set, repeatedly measuring the same sample for multiple times, and approximately using an average spectrum as a standard spectrum of the sample; step 3. correcting and preprocessing of the spectrum; step 4. establishing an inversion model to invert soil geochemical element contents; and step 5. automatically matching or manually selecting the inversion model according to the latitude and longitude obtained by GPS, placing the features of the spectrum in a correction model to measures the geochemical element contents of an unknown sample, and uploading the geochemical element contents to the cloud for storage. By adopting the method disclosed by the invention, the shortcomings that the traditional large-scale near-infrared spectrometer can only be used indoors and is not suitable for field operation is compensated; the measurement is fast; the result is comprehensive; and the cost is relatively low.
Description
technical field [0001] The invention relates to a method for collecting soil spectrum data based on a mobile phone, and belongs to the technical field of soil spectrum collection and analysis. Background technique [0002] Since each atom has its own characteristic spectral lines, the substance can be identified and its chemical composition can be determined according to the spectrum. This method is called spectral analysis. When doing spectral analysis, either emission spectra or absorption spectra can be used. The advantage of this method is that it is very sensitive and rapid. When the content of a certain element in a substance reaches 10^-10 grams, its characteristic spectral lines can be found from the spectrum, so it can be checked out. This technology is widely used in medicine, mining, environment, agriculture and many other fields. [0003] The growth and reproduction of crops and the quality of their products are closely related to the soil geological environm...
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IPC IPC(8): G01N21/25
CPCG01N21/25G01N21/274
Inventor 王建华
Owner 北京绿土科技有限公司