电容大米在线湿度检测装置的设计和实验
Wensheng Sun1, Lin Wan1,2, Gang Che1,2
1Department of Engineering, Heilongjiang Bayi Agricultural University, Daqing 163319, China.
Sensors (Basel, Switzerland)
|July 8, 2023
概括
这项研究介绍了一种新设备,用于精确的在线水水分检测,使用三板电容器和优化的BP神经网络. 开发的系统实现了高精度,提高了干燥塔的稳定性和监测精度.
科学领域:
- 农业工程 农业工程
- 传感器技术 传感器技术
- 数据科学数据科学数据科学
背景情况:
- 在干燥塔中在线监测大米水分面临着稳定性和精度方面的挑战.
- 现有的方法可能无法提供实时,准确的水分含量数据,这对于质量控制至关重要.
研究的目的:
- 设计和验证一个在线检测设备,在干燥塔的出口处检测水分.
- 提高大米湿度检测系统的稳定性和监测精度.
- 为准确的水分含量分析开发一个优化的预测模型.
主要方法:
- 设计了一个三板电容结构,并使用COMSOL软件模拟了其静电场.
- 采用中央复合材料设计,以优化板尺寸 (厚度,间距,面积) 以满足电容特定的灵敏度.
- 开发了一种带有十形叶片的动态采样设备和使用STM32F407ZGT6微控制器的检测系统.
- 在MATLAB中建立了一个基因算法优化的BP神经网络预测模型,用于水分含量分析.
主要成果:
- 确定了最佳的板结构参数:1毫米厚度,100毫米间距,18,000.069毫米2面积.
- 通过优化的BP神经网络实现了1.9683 × 10−5的最小平均平方误差 (MSE),明显低于未优化的版本 (7.1215 × 10−4).
- 在静态测试中显示了1.44%的平均相对误差,在动态测试中显示了2.103%,满足了设计准确性要求.
结论:
- 设计的在线大米湿度检测装置有效解决了稳定性和精度问题.
- 优化的BP神经网络模型显著提高了大米水分含量的预测准确性.
- 该设备满足实际应用需求,为干燥过程中的实时湿度监测提供可靠的解决方案.
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