Development of High Accurate Family-use Digital Refractometer Based on CMOS |
| |
Authors: | WANG Zhenxing JIA Zhenyuan |
| |
Affiliation: | School of Computer and Information Engineering, Shanghai Polytechnic University, Shanghai 201209, China; School of Intelligent Manufacturing and Control Engineering, Shanghai Polytechnic University,
Shanghai 201209, China |
| |
Abstract: | This study aims to develop a low-cost refractometer for measuring the sucrose content of fruit juice, which is an important factor affecting human health. While laboratory-grade refractometers are expensive and unsuitable for personal use, existing low-cost commercial options lack stability and accuracy. To address this gap, we propose a refractometer that replaces the expensive CCD sensor and light source with a conventional LED and a reasonably priced CMOS sensor. By analyzing the output waveform pattern of the CMOS sensor, we achieve high precision with a personal-use-appropriate accuracy of 0.1%. We tested the proposed refractometer by conducting 100 repeated measurements on various fruit juice samples, and the results demonstrate its reliability and consistency. Running on a 48 MHz ARM processor, the algorithm can acquire data within 0.2 seconds. Our low-cost refractometer is suitable for personal health management and small-scale production, providing an affordable and reliable method for measuring sucrose concentration in fruit juice. It improves upon the existing low-cost options by offering better stability and accuracy. This accessible tool has potential applications in optimizing the sucrose content of fruit juice for better health and quality control. |
| |
Keywords: | Brix Meter High-precision Refractometer Oversampling 1D CMOS Sensor |
|
| 点击此处可从《国外电子测量技术》浏览原始摘要信息 |
|
点击此处可从《国外电子测量技术》下载全文 |
|