Data sections

The FOSS DS2500 is a benchtop visible and near-infrared (Vis-NIR) reflectance spectrometer. It covers 400–2500 nm at 0.5 nm resolution, producing 4200-element spectral arrays. In the AI4SH project it is used for soil analysis on dried and sieved samples in the laboratory.

The spectrometer record registers the instrument provision and its wavelength axis in the database. It must be inserted before any observation log or observation records can reference it.

Prerequisites

The foss ds2500 l provision and its provision_serial_nr (au) must exist from Load utility data.

Notebook cell

In load_ai4sh_spectral_data.ipynb, the Manage FOSS DS2500 spectrometer cell runs:

job_file = 'import_data/DS2500_spectra/job_DS2500_spectrometer.json'

structured_process_D, scheme_params_D = Initiate_process(notebook_path, scheme_file, job_file)

if structured_process_D is not None:
    Run_process(structured_process_D, scheme_params_D)

Job file

Path: ./ai4sh/import_data/DS2500_spectra/job_DS2500_spectrometer.json

{
  "process": {
    "job_folder": "import_data/DS2500_spectra/spectrometer",
    "process_sub_folder": "process",
    "pilot_file": "xspatula_add_spectrometer_pilot.txt"
  }
}

Pilot file

Path: ./ai4sh/import_data/DS2500_spectra/spectrometer/xspatula_add_spectrometer_pilot.txt

foss-ds2500-l_au_spectrometer.json

One entry — one spectrometer record.

Process file

Path: ./ai4sh/import_data/DS2500_spectra/spectrometer/process/foss-ds2500-l_au_spectrometer.json

{
  "process": [
    {
      "process": "manage_spectrometer",
      "parameters": {
        "provision_id__provision_name": "foss ds2500 l",
        "wavelength_unit_id__wavelength_unit_name": "um",
        "provision_serial_nr_id__provision_serial_nr_name": "au",
        "wavelength_array": [400.0, 400.5, 401.0, 401.5, "...4200 values total...", 2499.5]
      }
    }
  ]
}

The wavelength_array contains 4200 values from 400.0 to 2499.5 nm in 0.5 nm steps. The example above is abbreviated; the actual file contains the full array.

Instrument summary

Property Value
Provision foss ds2500 l
Serial number au
Wavelength range 400–2500 nm
Spectral resolution 0.5 nm
Number of bands 4200
Measurement type Reflectance
Use context Laboratory (dried and sieved samples)

Next step

Proceed to Manage FOSS DS2500 observation log.

Updated: