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公开(公告)号：US20130085700A1
公开(公告)日：2013-04-04
申请号：US13251136
申请日：2011-09-30
CPC分类号： G01C22/006
摘要： Techniques are provided for improving pedometer readings. In some embodiments, motion data, such as acceleration data is detected, and a magnitude of the acceleration data, referred to as the modulus, is processed. Techniques involve performing frequency analysis on the modulus. In some embodiments, the modulus samples are counted perform frequency analysis on each complete sample set. Each complete sample set includes overlapping samples with the previous sample set. A suitable frequency analysis algorithm, such as fast Fourier transform (FFT) dominant frequency computation is performed on each sample set to determine the dominant frequency of the modulus. The dominant frequency of the modulus may be smoothed in some embodiments to remove irregularities such as spikes or periods of inactivity. In some embodiments, results of frequency analysis may be used to determine whether a detected step is a walking step or a running step.
摘要翻译： 提供了提高计步器读数的技术。 在一些实施例中，检测诸如加速度数据的运动数据，并且处理被称为模数的加速度数据的大小。 技术涉及对模数进行频率分析。 在一些实施例中，对模数样本进行计数，对每个完整的样本集执行频率分析。 每个完整的样本集包括与先前样本集重叠的样本。 对每个样本集进行适当的频率分析算法，如快速傅里叶变换（FFT）主频计算，以确定模数的主频。 在一些实施例中，可以平滑模数的主要频率以去除不规则性，例如尖峰或不活动周期。 在一些实施例中，可以使用频率分析的结果来确定检测到的步骤是步行步骤还是运行步骤。
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公开(公告)号：US20130085677A1
公开(公告)日：2013-04-04
申请号：US13251128
申请日：2011-09-30
CPC分类号： G01C22/006 , A61B5/112 , A61B5/1123 , A61B5/7225 , A61B2560/0431 , G01P15/00
摘要： Techniques are provided for improving pedometer readings. In some embodiments, motion data, such as acceleration data is detected, and a magnitude of the acceleration data, referred to as the modulus, is processed. The modulus is used to detect walking steps and running steps during a measurement. In some embodiments, a distance ran is calculated based on the detected running steps and an estimated running stride length, and a distance walked is calculated based on the detected walking steps and an estimated walking stride length. The estimated running and walking stride lengths are calculated based on various parameters associated with the acceleration data, population data, and user-specific data. Expended calories may be estimated based on the distance ran and walked. The distance analysis process further includes calibration techniques, including, for example, least squares simple regression, least squares multiple regression, and K-factor analysis.
摘要翻译： 提供了提高计步器读数的技术。 在一些实施例中，检测诸如加速度数据的运动数据，并且处理被称为模数的加速度数据的大小。 该模数用于检测测量过程中的步行步骤和运行步骤。 在一些实施例中，基于检测到的运行步骤和估计的行驶步幅长度来计算跑步距离，并且基于检测到的行走步骤和估计的步行步幅长度来计算步行距离。 基于与加速度数据，人口数据和用户特定数据相关联的各种参数来计算估计的跑步和步行步长。 消耗卡路里可以根据跑步距离来估计。 距离分析过程还包括校准技术，包括例如最小二乘简单回归，最小二乘回归和K因子分析。
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公开(公告)号：US20140074431A1
公开(公告)日：2014-03-13
申请号：US13608214
申请日：2012-09-10
申请人： Yash Rohit Modi
发明人： Yash Rohit Modi
IPC分类号： G06F15/00
CPC分类号： G01C22/006
摘要： In some implementations, optimizations for detecting steps when a pedometer is worn at a user's wrist are described. In some implementations, a threshold crossing step detection method can be enhanced for wrist locations by counting the number of positive peaks between comparison threshold crossings, adjusting a minimum peak-to-peak threshold for qualifying threshold crossings, and inferring a second step based on the amount of time between threshold crossings. In some implementations, the pedometer can automatically determine that the pedometer is being worn on a user's wrist.
摘要翻译： 在一些实施方式中，描述了当计步器佩戴在使用者的手腕时检测步骤的优化。 在一些实现中，通过对比较阈值交叉点之间的正峰值的数量进行计数，调整用于限定阈值交叉的最小峰 - 峰阈值，并且基于该阈值交叉点推定第二步骤，可以增加手腕位置的阈值交叉步长检测方法 门槛过路之间的时间量。 在一些实施方案中，计步器可以自动地确定计步器被佩戴在用户的手腕上。
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公开(公告)号：US20130085711A1
公开(公告)日：2013-04-04
申请号：US13251142
申请日：2011-09-30
IPC分类号： G06F15/00
CPC分类号： G01C22/006
摘要： Techniques are provided for improving pedometer readings. In some embodiments, motion data, such as acceleration data is detected, and a magnitude of the acceleration data, referred to as the modulus, is processed for improved step detection. Techniques involve computing a moving average of the modulus and applying an acceleration threshold filter to the modulus. Crossings are detected based on peak-to-peak swing of the modulus about the moving average. In some embodiments, the frequency of the modulus is used in an adaptive filtering technique. based on the dominant frequency of the modulus, a frequency band is selected to filter to modulus. The frequency band may be dynamically changed to one of several frequency bands when a significant frequency change is detected in the dominant frequency of the modulus. In some embodiments, steps are detected based on the acceleration threshold-filtered and the frequency-filtered modulus.
摘要翻译： 提供了提高计步器读数的技术。 在一些实施例中，检测诸如加速度数据的运动数据，并且处理称为模数的加速度数据的幅度，以改进步骤检测。 技术涉及计算模数的移动平均值并将加速度阈值滤波器应用于模数。 基于关于移动平均线的模量的峰 - 峰摆动来检测交叉点。 在一些实施例中，在自适应滤波技术中使用模数的频率。 基于模数的主频率，选择频带以过滤模数。 当在模数的主要频率中检测到显着的频率变化时，频带可以动态地改变为几个频带之一。 在一些实施例中，基于加速度阈值滤波和频率滤波模数来检测步骤。
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