Data capture

Device Sensor Recorder

Name: Device Sensor Recorder
Author: Liangchao Deng

Capture phone orientation, leaf inclination, location and solar geometry as timestamped field records, then export a research-ready CSV.

Device sensors
CSV export
Local workflow

StableVersion 2026.10.1Validated 2026-10-10Solar position checked against NREL SPA (160 cases, 1950–2090): elevation within 0.05°, azimuth within 0.1°. Leaf inclination formula checked against an explicit rotation.

Guide

Sensor readinessAllow motion/orientation and location access from an explicit tap.

Leaf or sample ID

Current orientation

Alpha (Z, yaw):N/A

Beta (X, pitch):N/A

Gamma (Y, roll):N/A

Inclination (screen plane, leaf angle):N/A

Latest location

Latitude:N/A

Longitude:N/A

Altitude:N/A

Accuracy:N/A

Session status

Recorded rows: 0

Motion access: Not requested

leafId	timestamp	latitude	longitude	altitude	accuracy_m	alpha_deg	beta_deg	gamma_deg	inclination_deg	sunElevation_deg	sunAzimuth_deg	sensorTimestamp
No data yet. Enter ID and click “Capture Sample”.

Solar angle formulas

Solar declination (δ) and the equation of time come from the NOAA solar position algorithm (after Meeus); elevation (h) and azimuth (A) then follow from:

h=arcsin( sin(φ)·sin(δ) + cos(φ)·cos(δ)·cos(H) )

A=atan2( sin(H), cos(H)·sin(φ) − tan(δ)·cos(φ) )

°=rad × (180 / π) · Azimuth reported from North, clockwise [0 … 360°]

Symbols

φ	geographic latitude
δ	solar declination
H	hour angle — H = 15° × (solar time − 12)

Solar time is computed from the UTC instant, the longitude and the equation of time. Validated against NREL SPA: elevation within 0.05° and azimuth within 0.1°. Elevation is geometric, without atmospheric refraction.

Cite this work

If you use the Digital Plant Phenotyping Platform v25.0 or any of its tools in your research, please cite it.

DOI10.5281/zenodo.17544584

APA

LiangchaoDeng. (2025). smiler488/smiler488.github.io: Digital Plant Phenotyping Platform v25.0 (v25.0.0). Zenodo. https://doi.org/10.5281/zenodo.17544584

BibTeX

@software{Deng2025_DPPP_v25,
  author       = {Deng, Liangchao},
  title        = {Digital Plant Phenotyping Platform (v25.0)},
  year         = {2025},
  publisher    = {Zenodo},
  doi          = {10.5281/zenodo.17544584},
  url          = {https://doi.org/10.5281/zenodo.17544584},
  note         = {[Computer software]}
}

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