Dry Cannabis Detection by Using Portable Electronic Nose

Hendrick, -; Humaira,; Yondri, Surfa; Afdhal, Hutrila; Rahmatullah, Defri

doi:10.1109/isriti56927.2022.10053031

Cited by 1 publication

(1 citation statement)

References 18 publications

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“…Besides laboratory analysis using chromatographic measurement techniques [4,5], alternative methods to determine THC in cannabis are commercially available, e.g., THC test kits [6][7][8] or microelectronic gas sensors [9][10][11]. However, these methods do not provide the necessary measurement precision to reliably distinguish between legal and illegal samples.…”

Section: Introductionmentioning

confidence: 99%

Sensor for Rapid In-Field Classification of Cannabis Samples Based on Near-Infrared Spectroscopy

Zimmerleiter,

Greibl,

Meininger

et al. 2024

Sensors

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A rugged handheld sensor for rapid in-field classification of cannabis samples based on their THC content using ultra-compact near-infrared spectrometer technology is presented. The device is designed for use by the Austrian authorities to discriminate between legal and illegal cannabis samples directly at the place of intervention. Hence, the sensor allows direct measurement through commonly encountered transparent plastic packaging made from polypropylene or polyethylene without any sample preparation. The measurement time is below 20 s. Measured spectral data are evaluated using partial least squares discriminant analysis directly on the device’s hardware, eliminating the need for internet connectivity for cloud computing. The classification result is visually indicated directly on the sensor via a colored LED. Validation of the sensor is performed on an independent data set acquired by non-expert users after a short introduction. Despite the challenging setting, the achieved classification accuracy is higher than 80%. Therefore, the handheld sensor has the potential to reduce the number of unnecessarily confiscated legal cannabis samples, which would lead to significant monetary savings for the authorities.

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