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以检测不良坐姿,分析人们学习工作状态为引导,设计了基于深度图像的坐姿检测系统。该系统采用3D传感器获取人体坐立时的深度图像,设计了一种基于深度阈值的快速前景提取与干扰移除方法,能快速有效的提取坐姿状态下的人体分割图。基于人体轮廓的曲线特征实现了人体关键点定位,通过人体关键点的角度、深度信息与轮廓特征,对不同的坐姿图像进行统计分析,得到了一种区分不同坐姿的判定基准,运用该基准对9种不同坐姿进行识别,平均识别率可达到90%。最后,基于Android平台设计了坐姿检测系统的应用软件,实现了坐姿检测、坐姿提醒以及姿态统计等功能,并且对学习过程进行测试,测试结果表明,本系统可以有效的检测出9种坐姿、并对不良坐姿进行提醒与统计。 相似文献
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设计一款智慧教室的灯光控制系统,以实现教室照明系统的智能化,更好的利用能源和节约电能;该控制系统以AT89C52单片机为核心,通过外围设备分别检测教室里是否有人体的存在和教室环境中光的强度;系统会自动的根据检测到的条件;通过对环境的光信号强弱和人体存在信号检测,实现对教室灯光的智能控制,避免用电浪费。该系统同时具有手动按键开关,用于调试系统和故障实时检测。 相似文献
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经络可视化研究可以实现对人体经络的准确提取并实现经络线的三维可视化.多通道经络检测系统是经络可视化研究的重要组成部件,用于实现人体经络的准确提取.介绍了多通道经络检测系统中各模块的设计,包括:可调稳压电源模块、隔离刺激器模块、分压网络和放大隔离电路模块及A/D数据采集模块.软件方面,采用Visual C++.NET 2005平台进行程序开发,实现对人体经络阻抗信息的采集与处理,并确定经络位置.系统具有测量精度高、实时性好、操作界面友好等优点. 相似文献
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基于脉搏波速度测量的动脉硬化检测系统的设计与实现 总被引:1,自引:0,他引:1
介绍了一种基于脉搏波速度检测的人体动脉硬化无创检测系统的实现。该系统采用句法模式识别、医学专家系统等智能检测技术和以微控制器为核心的检测电路,自动对脉搏波进行识别处理与分析,通过对脉搏波传导速度的分析来诊断人体动脉硬化,并能获得反映人体心脏、血管、血液和微循环等功能和状态的多项参数,能够自动产生健康评估与诊断结论。该系统主要面向家庭和社区医疗服务使用,具有很好的应用前景。 相似文献
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李海军 《计算机应用与软件》2014,(4):173-174,204
针对在当前康复理疗系统中人体跟踪存在的问题,需要实时观测被监视场景中的运动目标,分析描述他们的行为,通过对人体行为的理解和判断,才能得到相应的结论并做出相应的决策。提出一种基于人体部位的支持向量机分类器的方法,实现人体跟踪。这种方法能够捕捉在人体姿态和背景变化时的人体关节部位,利用训练的人体部位模型能够在人相互遮挡时正确检测人体部位。在检测阶段,选择一个人体部位子集,最大限度地提高检测概率,大大提高了在多人场景中的检测性能。在跟踪阶段,利用SVM分类器实现人体的有效跟踪。实验表明该方法能够在人体相互遮挡情况下,正确检测和跟踪人体。 相似文献
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基于Petri网理论构建生物代谢网络模型,提出一种新的采用不等式的代谢流分析方法。以克鲁斯假丝酵母分批发酵,生产甘油的代谢网络为例,验证这种分析方法。结果表明,新分析方法,在前提假设和分析性能两方面均比采用方程式的传统方法明显优越。首先,方法允许实验数据有一定误差,使模型更加接近真实的实验系统。其次,新方法还可以做代谢模型更详细的分析:代谢流分裂比分析、敏感性分析。实际上,分析结果还可直接用于校正代谢物浓度、酶活力的边界值,为进一步研究代谢途径优化提供约束条件。 相似文献
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基于C8051F020无创血压测量系统的设计 总被引:1,自引:0,他引:1
血压和脉率是人体的重要生理参数,准确地测量人体血压和脉率对人体的健康起着非常重要的作用;文中介绍了以C8051F020为核心的无创血压测量系统,从硬件和软件两个方面详细说明了设计方法;血压信号通过前端放大电路和滤波电路后,经过单片机采集后运算得到血压值和脉率值,最后系统通过LCD动态实时显示测量的结果,同时给出了在遇到异常情况时处理的方法,保证了无创血压测量的安全性;经过实验表明,使用方便灵活,具有较高的临床应用价值。 相似文献
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本文总结了人工代谢算法当前的主要应用领域,分析了信息技术在分子模拟分析中的发展趋势,给出了应用于分子稳定性分析时的代谢计算编码设计模式。并以几种常见分子为例,基于代谢计算分析了物质的稳定性。分析结果表明了该方法的可行性和有效性。 相似文献
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Fall-arrest systems (FASs) have been widely applied to provide a safe stop during fall incidents for occupational activities. The mechanical interaction and kinetic energy exchange between the human body and the fall-arrest system during fall impact is one of the most important factors in FAS ergonomic design. In the current study, we developed a systematic approach to evaluate the energy dissipated in the energy absorbing lanyard (EAL) and in the harness/manikin during fall impact. The kinematics of the manikin and EAL during the impact were derived using the arrest-force time histories that were measured experimentally. We applied the proposed method to analyse the experimental data of drop tests at heights of 1.83 and 3.35 m. Our preliminary results indicate that approximately 84-92% of the kinetic energy is dissipated in the EAL system and the remainder is dissipated in the harness/manikin during fall impact. The proposed approach would be useful for the ergonomic design and performance evaluation of an FAS. STATEMENT OF RELEVANCE: Mechanical interaction, especially kinetic energy exchange, between the human body and the fall-arrest system during fall impact is one of the most important factors in the ergonomic design of a fall-arrest system. In the current study, we propose an approach to quantify the kinetic energy dissipated in the energy absorbing lanyard and in the harness/body system during fall impact. 相似文献
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铝板轧制过程的控制是板材生产过程自动化中的重要环节。针对该过程,本文提出一种人工代谢算法。通过算法中的人工酶对轧制过程进行辨识,通过建立代谢平衡方程对控制目标进行优化,通过对代谢方程中的反应速率、平衡常数和抑制因子进行调节来获取实时的控制优化值,建立一个分布式离散事件系统来对系统进行监控,并通过控制实例说明了该算法的优越性。所提出的控制系统成功地应用于某铝材厂的铝板轧制过程,节约了时间成本,提高了生产效益。 相似文献
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Designing clothing with good thermal functional performance is very demanding and time-consuming if we follow traditional design methods. An innovative method consisting of a CAD system, allowing the designer to perform multi-style clothing thermal functional design on a customized virtual human body, is presented in this paper. The new functionalities of the virtual system provide the abilities to perform intelligent design of different clothing styles and materials for different body parts according to individual design requirements, namely design of various categories of clothing, such as hat, coat, trousers, gloves and shoes in the same design scheme. The designed clothing can be worn on a virtual human body and set in various wearing scenarios. The thermal behaviors in the human body-clothing-environment are simulated to predict the thermal performance of clothing and thermal response of the human body at multi-parts. 2D/3D visualization and animation of the simulation results are presented to help the designers to preview and determine whether the thermal performance of clothing is satisfactory and then obtain feedback to improve their designs iteratively. 相似文献
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Chika Sugimoto Hartaman Ariesanto Hiroshi Hosaka Ken Sasaki Noriyoshi Yamauchi Kiyoshi Itao 《Microsystem Technologies》2005,11(8-10):1028-1033
Methods and tools for monitoring real-time human body information in daily life are required for advanced healthcare. In this study, a method for estimating energy expenditure during health exercises was evaluated and a wrist-worn sensing system based on the method was developed. Pulse monitoring was used to calculate energy expenditure by estimating oxygen uptake from a correlation between heart rate and oxygen uptake. Bluetooth technology was utilized for sending data by wireless communication. By the newly developed system, energy expenditure during exercise can be estimated considering individual difference and distinguishing changes in grade or load. Our goal is to construct a miniaturized wearable system that monitors vital signs and has many applications for healthcare. The study suggests that a wearable pulse sensing system proposed could provide useful information for healthcare. 相似文献
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《Ergonomics》2012,55(6):507-515
A study was carried out to compare the sum of independently determined net rates of energy expenditure for two or three simple muscular tasks and the net rate of energy expenditure for the simultaneous performance of the same tasks. Three simple tasks were used: one-armed cranking of an ergometer, one-armed static pulling against resistance, and walking. Eight configurations representing all possible combinations of the simple tasks were examined. The results showed that for seven of the eight configurations, the sum of the net rates of energy expenditure for the simple tasks significantly exceeded the net rate of energy expenditure for simultaneous performance. For four of these configurations, the discrepancy was 20 per cent or larger. The results are discussed in terms of kinesiology, i.e. the science of movement of the body, and their implications for both work design and possible systems of standard metabolic data. 相似文献