智舌高频正弦包络信号对椰汁的区分辨识研究  

The discrimination of the quality of coconut milk by Smartongue based on high-frequency sinusoidal envelope signal

作　　者：吴凤华 兰余 麦文镇 胡晓晖 田师一 邓少平 

机构地区：[1]浙江工商大学食品与生物工程学院食品质量与安全系,浙江杭州310035 [2]海南椰岛(集团)股份有限公司,海南海口570105

出　　处：《食品研究与开发》2012年第12期119-123,共5页Food Research and Development

基　　金：国家高技术研究发展计划(No.2011AA1008047);海口市重点科技计划项目(No.20110001)

摘　　要：借助LabVIEW虚拟仪器系统,将激发频率为1、10、100 Hz正弦包络信号提升为1 000 Hz^10 000 Hz,采集频率为1.25 MHz。利用该信号,以四种味觉物质为对象进行区分辨识,相比1、10、100 Hz低频信号,有明显的区分效果。对6种不同市售品牌椰子汁品质区分实验证实,高频正弦包络信号通过频率提升,检测时间大幅减少,有效提高了智舌工作效率,更加符合现代快速检测理念。LabVIEW virtual instrument system was used to enhance the excitation frequency of sinusoidal envelope signal from 1,10,100 Hz to 1 000 Hz-10 000 Hz,the acquisition frequency to 1.25 MHz.Compared with low-frequency signals of 1,10,100 Hz,four kinds of taste substances could be identified clearly by the signal.The quality distinction of six different commercially available brand of coconut milk experiment had been confirmed that to increase frequency could significantly reduce the detection time and improve the work efficiency of Smartongue,which was in line with the concept of modern rapid detection.

关 键 词：智舌 激发频率 椰汁 正弦包络信号 LABVIEW 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]