Development of an intelligent calorie counter with classification of behavior and estimation of walking velocity

例如，日常生活中的能量消耗为诊断心脏病患者的医生提供了重要信息。本研究提出一种能量消耗定量测量系统的概念，称为智能热量计数器（ICC）。ICC将步行行为分为水平步行、上升和下降，推导出水平和垂直速度，并利用每种行为的RMR（相对代谢率）估计能量消耗。本研究的主要成果概括如下：1.水平速度由附接在脚上的传感器系统非限制性地估计。将脚的加速度转换为水平加速度，并积分得到水平速度。消除了积分误差，使水平速度在摆动阶段结束时达到零。水平行走实验结果表明，该算法的距离估计误差平均为2.0 [%].垂直速度 关于我们 通过对大气压力传感器的输出进行微分来测量城市。将卡尔曼滤波器应用于输出，以减少传感器噪声和由于天气引起的压力变化。升降实验结果表明，气压传感器的应用为垂直位移和速度的测量提供了通用的测量系统.步行过程中的能量消耗的估计是通过使用ICC，它具有一维加速度计和一个大气压力传感器。通过ICC分类的步行行为用于确定RMR和能量消耗。与能量消耗相对应的心率也在步行期间测量。水平行走、上升和下降的实验结果表明，ICC估计的心率和能量消耗之间的相关系数显著大于步数计和/或卡路里计数器估计的相关系数。少

Energy expenditure in daily life provides important information for physicians who diagnose patients with cardiac disease, for example. This study proposes a concept of measurement system of qualitative energy expenditure so called Intelligent Calorie Counter(ICC). The ICC distinguishes the walking behavior into level walk, ascending, and descending, derives the horizontal and vertical velocity, and estimates the energy expenditure utilizing RMR (Relative Metabolic 'Rate) of each behavior. The main results of this research are summarized as follows:1. Horizontal velocity is non-restrictedly estimated by a sensor system attached on the foot. The acceleration of foot is converted to the horizontal acceleration and is integrated to derive the horizontal velocity. Integral error is eliminated so that the horizontal velocity at the end of the swing phase reaches zero. The experimental results of level walk show that the estimation error of the distance is 2.0 [%] on average.2. Vertical velo … More city is measured by the differentiation of the output of the atmospheric pressure sensor A Kalman filter is applied to the output to reduce the sensor noise and the change of the pressure due to the weather. The experimental results of ascending and descending suggest that the application of the atmospheric pressure sensor provides general purpose measurement system of the vertical displacement and velocity.3. Estimation of energy expenditure during walk is performed by using the ICC which has one dimensional accelerometer and one the atmospheric pressure sensor. Walking behavior classified by the ICC is used to determine the RMR and the energy expenditure. Heart rate, which corresponds to the energy expenditure, is also measured during walk. Experimental results of level walk, ascending, and descending show that the correlation coefficient between the heart rate and the energy expenditure estimated by the ICC is significantly larger than that estimated by the pedometer and/or calorie counter. Less