基于低功耗蓝牙智能健康手表的设计
发布时间：2018-07-14 15:00
【摘要】：由于经济的快速发展、中国社会老龄化的加重以及可穿戴技术的迅速发展,使得更多企业和个人加入到智能手表的研发当中。智能手表在迅速发展的同时,也存在行业用户需求不明、产品定位不准、物物互联不畅等方面的困扰;智能手表产品同时存在功耗高、精度低、稳定性差、价格昂贵和功能单一等缺点。针对以上缺点设计一款基于低功耗蓝牙的智能健康手表,智能手表不仅有着传统手表查看时间和日期的功能,还可以获取用户的运动量、心率和体温等数据,为用户的健康生活提供支撑。对于运动检测模块主要实现计步器的功能,将LIS3DH获取的加速度数据进行三轴合一,再将数据进行两次滑动平均滤波,使得数据曲线更加平滑,利用时间窗口函数和幅度阈值设定获取数据的有效极大值,为了有效的去除晃臂干扰和去除伪峰,算法设定在6秒内有连续的计步积累才会计步,达到准确计步的目的;心率检测模块首先通过心率传感器ePL2197获得用户的光电容积脉搏波信号,将采集到的数据通过巴特沃斯高通滤波器去除基线漂移问题,再通过巴特沃斯低通滤波器进行数字滤波,去除噪声和干扰,在经过峰值检测算法得到心率数据,最终利用光电容积脉搏波信号获取准确的心率数据;对于体温检测模块则是首先将高精度温度传感器MLX90615靠近手腕,收集腕部温度,根据温度变化情况作为体温的参考数据。经过实物测试,设计的智能手表在计步、心率和体温数据的准确度上能够满足用户的日常需求。
[Abstract]:With the rapid development of economy, the aggravation of China's aging society and the rapid development of wearable technology, more enterprises and individuals have joined in the research and development of smart watches. With the rapid development of smartwatch, there are also some problems such as unclear user demand, inaccurate positioning of products, poor interconnection of objects and objects, etc. The products of smart watches also have high power consumption, low precision, poor stability, and so on. The disadvantages of high price and single function. A smart health watch based on low power Bluetooth is designed for the above shortcomings. The smart watch not only has the function of viewing time and date of traditional watch, but also can obtain the data of user's movement, heart rate and body temperature, etc. To provide support for the healthy life of users. For the motion detection module, the function of the pedometer is mainly realized. The acceleration data obtained by LIS3DH is combined with three axes, and then the data is filtered twice by sliding average, which makes the data curve smoother. The time window function and the amplitude threshold are used to obtain the effective maximum of the data. In order to remove the interference of the arm and the false peak effectively, the algorithm is set up in 6 seconds to have a continuous counting step accumulation before accounting step, to achieve the purpose of accurate counting step; The heart rate detection module first obtains the user's photoelectric volume pulse wave signal through the heart rate sensor ePL2197, removes the baseline drift problem through the collected data through the Butterworth high-pass filter, and then carries on the digital filtering through the Butterworth low-pass filter. Removing noise and interference, obtaining heart rate data through peak detection algorithm, and finally obtaining accurate heart rate data by using photovolumic pulse wave signal. For temperature detection module, MLX90615, a high-precision temperature sensor, is first approached to the wrist. Collect wrist temperature and use temperature as reference data. After physical testing, the designed smartwatch can meet the daily needs of users in the accuracy of step, heart rate and temperature data.
【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN925;TH714.52
本文编号：2122019
[Abstract]:With the rapid development of economy, the aggravation of China's aging society and the rapid development of wearable technology, more enterprises and individuals have joined in the research and development of smart watches. With the rapid development of smartwatch, there are also some problems such as unclear user demand, inaccurate positioning of products, poor interconnection of objects and objects, etc. The products of smart watches also have high power consumption, low precision, poor stability, and so on. The disadvantages of high price and single function. A smart health watch based on low power Bluetooth is designed for the above shortcomings. The smart watch not only has the function of viewing time and date of traditional watch, but also can obtain the data of user's movement, heart rate and body temperature, etc. To provide support for the healthy life of users. For the motion detection module, the function of the pedometer is mainly realized. The acceleration data obtained by LIS3DH is combined with three axes, and then the data is filtered twice by sliding average, which makes the data curve smoother. The time window function and the amplitude threshold are used to obtain the effective maximum of the data. In order to remove the interference of the arm and the false peak effectively, the algorithm is set up in 6 seconds to have a continuous counting step accumulation before accounting step, to achieve the purpose of accurate counting step; The heart rate detection module first obtains the user's photoelectric volume pulse wave signal through the heart rate sensor ePL2197, removes the baseline drift problem through the collected data through the Butterworth high-pass filter, and then carries on the digital filtering through the Butterworth low-pass filter. Removing noise and interference, obtaining heart rate data through peak detection algorithm, and finally obtaining accurate heart rate data by using photovolumic pulse wave signal. For temperature detection module, MLX90615, a high-precision temperature sensor, is first approached to the wrist. Collect wrist temperature and use temperature as reference data. After physical testing, the designed smartwatch can meet the daily needs of users in the accuracy of step, heart rate and temperature data.
【学位授予单位】：宁夏大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN925;TH714.52
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