A Dual-Mode Magnetic-Acoustic System for Monitoring Fluid Intake Behavior in Animals.
A Dual-Mode Magnetic-Acoustic System for Monitoring Fluid Intake Behavior in Animals.
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DOI：
10.1109/tbme.2016.2638545
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发表时间：
2017-09
期刊：
影响因子：
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通讯作者：
Ghovanloo M
中科院分区：
文献类型：
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作者：
Sargolzaei S;Elahi H;Sokoloff A;Ghovanloo M
我们开发了一种不显眼的磁声液体摄入监测(MAFIM)系统，使用传统的不锈钢滚珠乳头来测量动物的舔和喝行为。通过一对3轴磁力计，使用基于高斯混合模型的数据驱动分类器，将附着在不锈钢滚子球上的小型永磁体的运动感测到，并将其转换为指示球的状态(向上或向下)的时间序列。滚珠的上升和下降产生的声音也被记录下来，并通过独立的模式进行分类，以证实磁性数据，从而实现更稳健的解决方案。磁传感器和声波传感器的操作由嵌入式系统控制，通过USB与运行在PC上的定制设计的用户界面进行通信。MAFIM系统已经在小型猪身上进行了活体测试，准确地测量了各种饮水参数和舔食模式，而不受当前舔食监测系统的限制，如乳头接触、动物与乳头接触、动物训练和复杂的参数设置。
We have developed an unobtrusive magnetic-acoustic fluid intake monitoring (MAFIM) system using a conventional stainless-steel roller-ball nipple to measure licking and drinking behavior in animals. Movements of a small permanent magnetic tracer attached to stainless-steel roller balls that operate as a tongue-actuated valve are sensed by a pair of 3-axial magnetometers, and transformed into a time series indicating the status of the ball (up or down), using a Gaussian mixture model based data driven classifier. The sounds produced by the rise and fall of the roller balls are also recorded and classified to substantiate the magnetic data by an independent modality for a more robust solution. The operation of the magnetic and acoustic sensors is controlled by an embedded system, communicating via USB with a custom-designed user interface, running on a PC. The MAFIM system has been tested in vivo with mini-pigs, accurately measuring various drinking parameters and licking patterns without constraints imposed by current lick monitoring systems, such as nipple access, animal-nipple contact, animal training, and complex parameter settings.