Study of milk concentration detection based on the AC signal-modulated LED

Haonan Xing; Xiaoqi Wei; Lin Gui; Mingyu Cao; Xuhuix Chen; Cunliang Cheng

doi:10.1117/12.2691401

28 July 2023 Study of milk concentration detection based on the AC signal-modulated LED

Haonan Xing, Xiaoqi Wei, Lin Gui, Mingyu Cao, Xuhuix Chen, Cunliang Cheng

Proceedings Volume 12753, Second Conference on Biomedical Photonics and Cross-Fusion (BPC 2023); 127530E (2023) https://doi.org/10.1117/12.2691401
Event: Second Conference on Biomedical Photonics and Cross-Fusion (BPC 2023), 2023, Shanghai, China

Abstract

As milk consumption increases, rapid detection of milk concentration is becoming more and more crucial. In this research, we propose an LED-based milk concentration detection system, which is a new detection method that detects milk concentration by loading the LED with RF signals. The system includes an arbitrary waveform generator (AWG), LED, lampshade, silicon photo dioxide (PD), oscilloscope, and other components. After passing through different concentrations of milk solution, the light signal carrying a specific frequency is received by the PD, and after photoelectric conversion, the signal carrying a specific frequency in the light signal is converted out, and the concentration of the milk solution to be measured is obtained by reading the peak value measured by the oscilloscope. The experiments validated different brands of milk solutions with varying concentrations, demonstrating the feasibility of LED-based milk concentration detection, and the test analysis was performed for the same brand of milk solutions with varying concentrations, yielding a quadratic fit R2=0.9169, confirming that the system has good sensing performance for milk concentration and validating the method's feasibility.

Citation Download Citation

Haonan Xing, Xiaoqi Wei, Lin Gui, Mingyu Cao, Xuhuix Chen, and Cunliang Cheng "Study of milk concentration detection based on the AC signal-modulated LED", Proc. SPIE 12753, Second Conference on Biomedical Photonics and Cross-Fusion (BPC 2023), 127530E (28 July 2023); https://doi.org/10.1117/12.2691401

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KEYWORDS

Light emitting diodes

Signal detection

Light scattering

Analytical research

Chemical analysis

Near infrared spectroscopy

Oscilloscopes

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