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thethiefofstars edited this page Apr 19, 2023 · 2 revisions

Design Overview

Our design framework focuses on three things: cost, ease of use, and portability. A traditional fluorometer is highly sensitive to fluorescence readings and can detect changes in the microseconds. This allows for specific fast biological mechanisms to be measured indirectly, however, highly increases the cost. To overcome this limitation, we use less precise measurements and rely on slower biological mechanisms.

As of the time of writings this, the current design goal is to make a point and shoot model. low cost design distance, def of remote

Design Challenges

Aerial Measurements

Detecting Chlf over and area is complicated as plants grow, so does chlf because there is just more area

Canopy Variations

lambartian source

Electromagnetic Radiation (Noise)

YUP

Inverse Squared Law

distance causes response to become weaker

Limited Photosensor Range

optimize the detection range

Low Intensity FLourescence

Fluorescence is difficult to measure due to its low intensity. Because of this, wavelength optimization of both incoming and detection wavelengths is crucial. For most plants, fluorescence is at a maximum when hit with ~600nm and ~475nm light.

Meaningful Measurements

Fluorescence alone is also not a useful measurement, and many uses for it have been found experimentally using fluorescence ratios.

Measurement Variations

Current theory is that we are measuring between pulses, potentially related to response time.

Minimum Timestep

PAM can detect in the nanoseconds, we can't

Overexposure of Light

paper that said how plants were bad

Photosystem Response Time

response time of the photosystem will cause an offet from our lock in amplifier

Species Variations

lambartian source

Appendix

unit descriptions formulas

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