Hyperspectral soil data acquisition and analysis method based on mobile phone
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A technology of data acquisition and spectral analysis, which is applied in the direction of material analysis, material analysis, and color/spectral characteristic measurement through optical means, which can solve the problems of lack of customized acquisition and analysis software, use of business tools, and high equipment costs, and achieve savings Investigate cost, save equipment cost, effect of size and weight reduction
Inactive Publication Date: 2020-02-14
北京绿土科技有限公司
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[0004] Most of the existing field spectrum acquisition equipment is oriented to scientific research, the equipment cost is high (hundreds of thousands), the volume is large (several kilograms), and there is a lack of professional-oriented custom acquisition and analysis software. Generally, it cannot be used as a business tool
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[0024] like figure 1 As shown, a mobile phone-based hyperspectral soil data collection and analysis system of the present invention includes two parts: spectrum collection and spectrum analysis, and consists of a handheld spectrometer, smart phone, spectrum analysis software, cloud service platform, and model library. The handheld spectrometer is connected to the smart phone through MicroUSB, type-c interface or Bluetooth, the spectral analysis software is installed on the smart phone, the smart phone is connected to the cloud service platform through the mobile network, and the model library is stored in the cloud service platform.
[0025] A mobile phone-based hyperspectral soil data collection and analysis method, the specific implementation process is as follows:
[0026] (1) Establishment of soil composition inversion model library
[0027] Based on the 1:250,000 standard framing range, a soil nutrient model is established, specifically including: organic matter, total n...
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Abstract
The invention discloses a hyperspectral soil data acquisition and analysis system based on a mobile phone. The system comprises a handheld spectrometer, a smart phone, spectrum analysis software, a cloud service platform, and a model library. A method comprises the following steps of firstly acquiring a visible light-near infrared spectrum of a ground object by the handheld spectrometer, importingacquired spectral data into mobile phone end spectrum analysis software, preliminarily interpreting whether spectral information is correct or not, and selecting to save or delete the spectral information; secondly, performing metadata editing on the saved spectrum; and finally, synchronously saving the saved spectrum and longitude and latitude coordinates of a sampling point acquired by the mobile phone to the cloud service platform, calculating a sheet number where the sampling point is located through the longitude and latitude coordinates, and calling a corresponding soil composition inversion model to calculate soil composition contents. Compared with a traditional geochemical survey method, the hyperspectral soil data acquisition and analysis system provided by the invention saves the survey cost, shortens the survey period, and realizes the rapid determination of the soil composition contents; the field operation is facilitated; and the determination precision of the soil composition contents is improved.
Description
technical field [0001] The invention relates to a rapid soil information survey method, in particular to a mobile phone APP-based hyperspectral soil data collection and analysis method, which belongs to the field of geological survey. Background technique [0002] The existing soil information survey mainly adopts two methods: geochemical survey and remote sensing technology survey. Geochemical investigation is to collect soil samples in accordance with the sample collection standards, and carry out testing and analysis of multiple geochemical elements, including the total and effective content, to evaluate the soil quality. Mainly investigate the nutrient elements in the soil (such as nitrogen, phosphorus, potassium, calcium, iron, copper, zinc, etc.), life and health elements (such as selenium, strontium, fluorine, iodine, etc.), heavy metal pollution elements (such as mercury, cadmium, lead, etc.) , chromium, arsenic) and organic pollutant content and other 54 chemical i...
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