Design of a low-cost mobile multispectral albedometer with geopositioning and absolute orientation

CYCLOPS: A cyclists’ orientation data acquisition system using RGB camera and inertial measurement units (IMU)

“…In [33] is presented the design, assembly, and validation of a small sensor attached to a wearable camera in the operating room to objectively quantify camera motion through an inertial measurement unit coupled to a microcontroller, thus, capturing high-quality intraoperative video of open surgical procedures. The design and validation of a low-cost mobile albedometer that measures the reflection in eight spectral bands in the visible are presented in [34] , the system is equipped with a Global Navigation Satellite System (GNSS) receiver, to reference its position and an Inertial Measurement Unit (IMU) to know its absolute orientation, make corrections in real-time or detect errors. A low-cost portable electronic system for estimating step width during the human gait cycle was described in [35] as a supporting device for Performance Oriented Mobility Assessment Test (POMA).…”

“…An IMU is a device that combines multiple sensors such as accelerometers, gyroscopes, and magnetometers. IMUs are often used in applications where knowing the orientation and motion of an object is important, as seen in [34] , [40] , [41] , [42] , [43] .…”

A Portable Tool for Spectral Analysis of Plant Leaves That Incorporates a Multichannel Detector to Enable Faster Data Capture

“…Optical spectrometers that operate in the visible and infrared regions have become indispensable tools in our daily lives, fundamentally transforming our comprehension and interaction with a wide range of materials and substances, regardless of their physical state. This technology is extensively employed in several areas, including agriculture, energy, chemistry, materials science, and food production [1][2][3][4][5][6][7][8][9]. The operating principle of visible-short-wave near-infrared (VIS-NIR-SWIR) spectroscopy is the transfer of energy between light and matter.…”

“…However, the demand for versatile spectroscopy tools tailored to specific applications has driven innovation in the form of more compact, cost-effective designs and user-friendly systems. These modern spectrometers prioritize portability, affordability, durability, and energy efficiency, making them suitable for a diverse range of scenarios [4,9,[22][23][24][25][26]. The rising demand for mini-and micro-spectrometers across different industries has resulted in a projected market value of almost USD 900 million, showing a significant surge in interest in this technology [27].…”