摘要
介绍智能化木材含水率测试系统的电路设计、硬件构成和工作流程，提出采用动态补偿方法，可消除由零点漂移、温度漂移等引起的测量误差。经验证，在纤维饱和点以上时，含水率自动测试系统的平均误差小于4％；在纤维饱和点以下时，误差小于2％，尤其在终含水率（14％～9％）范围内误差小于1％。
An intelligent MC measuring system for lumber was designed by the authors and presented in this article. The hardware circuit and software flow chart of this system are described in detail. A dynamic compensation method is applied to eliminate zero drift and temperature drift errors. A test showed that the mean errors of the measured results from this new system was less than 4% above fiber saturation point, and less than 2% below fiber saturation point, and even lower than 1% around the final MC （14%-9%）. These results demonstrated the precision and reliability of the system to be effectively improved.
出处
《木材工业》
北大核心
2006年第3期35-37,共3页
China Wood Industry
基金
哈尔滨市青年科学研究基金项目(2003AFQXJ022)"基于神经网络的木材干燥过程遗传算法优化控制建模与仿真研究"
关键词
木材
含水率
自动测试
模入通道
lumber
moisture content （MC）
automatic measurement
analog input channels
