Low-Cost Optoelectronic Sensor for Early Screening of Citrus Greening in Leaves
Citrus greening, or Huanglongbing (HLB), is a serious disease affecting citrus crops, with no known cure. Early detection is essential, but current methods are often expensive. To address this, a low-cost, portable sensor was developed to distinguish between HLB-infected and healthy citrus leaves using a LED-based optical sensing circuit. The device uses white and infrared (IR) LEDs to illuminate the adaxial leaf surface and measures change in reflectance intensities caused by differences in bi…
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