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Light Acquisition02:16

Light Acquisition

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In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
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There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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Infrared (IR) Spectroscopy: Overview01:09

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When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
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Raman Spectroscopy Instrumentation: Overview01:26

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
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A low-cost IoT multi-spectral acquisition device.

J S Botero-Valencia1, J Valencia-Aguirre1, D Durmus2

  • 1Grupo de Automática, Electrónica y Ciencias Computacionales, Instituto Tecnológico Metropolitano, Medellín, Colombia.

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Summary
This summary is machine-generated.

A new low-cost, IoT multi-spectral device estimates lighting quality and color rendering in real time. This wireless sensor offers a customizable and affordable solution for smart lighting systems.

Keywords:
Internet of thingsIoT deploymentMultispectral sensorSpectral analysisSpectrum measurement

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Area of Science:

  • Optoelectronics
  • Sensor Technology
  • Internet of Things (IoT)

Background:

  • Accurate assessment of light source quality and lighting conditions is crucial.
  • Advancements in intelligent, internet-connected systems enable real-time data access.
  • Smart lighting systems offer potential in diverse applications like object reflectance optimization and artwork preservation.

Purpose of the Study:

  • To develop novel sensors for real-time lighting quality measurements.
  • To create a low-cost, IoT-enabled multi-spectral acquisition device with wireless communication.
  • To provide a customizable and reproducible solution for smart lighting applications.

Main Methods:

  • Design and implementation of a low-cost, multi-spectral acquisition device.
  • Integration of wireless communication for IoT connectivity.
  • Validation of the device's operational performance for reproducibility and independent testing.

Main Results:

  • A functional low-cost IoT multi-spectral acquisition device was developed.
  • The device enables real-time estimation of light quality and color rendering measures.
  • The system's total cost is under 130 USD, offering a significant advantage over commercial alternatives.

Conclusions:

  • The presented device meets the need for easily integrated, real-time lighting quality sensors.
  • Its low cost and customizability make it suitable for various smart lighting applications.
  • The device facilitates light source spectrum recovery and accurate lighting quality assessment.