共查询到20条相似文献,搜索用时 656 毫秒
1.
《无线电通信技术》2016,(1):82-85
当老人发生跌倒或者遭遇其他意外危险时,如果未在第一时间得到救治,很可能会导致老人瘫痪或生命安全,针对这一情况,提出了采用三轴加速度计等对老人状态进行监测和报警的装置。老人跌倒监测定位装置实时对老人姿态变化进行监测,当老人发生跌倒或者遭遇其他意外危险时,监测装置报警并通过内置的GSM/3G通信模块和全球定位模块(GPS),将所在的位置信息以短信形式,发送给预设的家人或社区服务站手机终端,还可通过移动通信的语音通信功能,进行状态确认和语音救助指导。对坐、站、步行等状态下及俯卧、左右侧卧等姿态下的数据进行了采集处理,结果表明装置能正确监控并报警,同时可将定位信息发送到预设的手机上。 相似文献
2.
3.
4.
《现代电子技术》2019,(6):142-145
为了尽可能地降低老年人因跌倒而造成的伤亡,利用Kinect V2体感设备对老年人跌倒行为进行检测与识别,通过对Kinect摄像头获取的RGB-D图进行处理,得到人体骨骼图像和位置信息。利用骨架跟踪技术,选取人体中心点、两髋中心、右脚掌等骨骼点,实时计算人体中心点的空间位置、运动速度,以及两髋中心点的位置关系、离地面高度等参数。文中重点分析了跌倒时速度阈值和高度阈值。经过大量实验验证,在室内环境下,文中算法实时性高,能克服传统视频检测技术检测率低和实时性差的问题,在检测过程中能有效地保护老年人的隐私,不间断地实时检测,为老人意外跌倒提供安全保障。 相似文献
5.
6.
随着我国老龄化的加剧,老年人越来越多,在遇到跌倒或疾病时,如果不对他们进行及时抢救,就可能会导致病情恶化,而且现在很多人对一些急救知识掌握不够完全,不能及时对老人发生的意外进行处理.在此背景下,针对老年人发生意外的情况,我们设计了一款基于树莓派(B+型)的智能老人监护系统,家人能在老人发生意外时,接收到提醒并查看老人当前的定位,第一时间前往进行救护.同时家人能接收到一些相关的急救知识,避免在救护老人的过程中造成一些不必要的伤亡事故,将伤害降低到最低程度,而且这个系统也可以让老人一键式联系家人. 相似文献
7.
《现代电子技术》2017,(22)
针对单片机的计算能力和检测系统的实时性,设计了一种可穿戴的老人跌倒检测装置。利用六轴陀螺仪加速度计进行原始信号的采集,将合成加速度和姿态角作为特征量,设计一种基于二叉树支持向量机分类思想的三级检测算法。首先,以合成加速度是否超出阈值作为分类条件,识别样本是否属于剧烈运动;其次,则以合成加速度是否呈现周期性变化和人体是否处于类静止状态(合成加速度在0.8~1.2 g)将样本进一步细分;最后,则通过判断人体的姿态确定老人是否跌倒。当检测到老人跌倒后,利用GPS对老人进行定位,同时利用GSM模块发送报警信息。实验证明算法准确率高、实时性好。同时能够准确定位,并将信息发送出去。 相似文献
8.
9.
10.
为了迅速获得老人跌倒信息,使其得到及时救助,设计和实现了基于嵌入式视频监控的摔倒检测系统。该系统无需人体佩戴任何设备,即可自动检测老人跌倒信息并报警。对监控到的视频流采用H.264标准进行编码压缩,运用B/S网络结构模式实现远程视频监控。同时,对监控到的视频流进行人体摔倒检测以实现报警。摔倒检测使用改进的高斯混合模型算法对背景进行更新,采用背景减除法来分割运动目标。经实验表明该嵌入式系统可实现远程监控并准确分割出人体目标,对其姿态进行自动判别,出现跌倒时进行报警。该系统满足实时性要求,误报率低,鲁棒性好。 相似文献
11.
12.
13.
文中基于方便老年人、盲人、智障人士等特殊人群出行,便于监护人监控和寻找,综合应用MCU控制、GPS定位、GSM/GPRS传输、角度测量等技术,制作了一种智能定位报警拐杖。样机测试证明,当使用者的实际位置超出设定的范围或路径,可以给出提示信息,帮助使用者回到设定的范围或路径;在拐杖歪倒超过一定时间时,自动向监护人发送求救及定位信息,或者自动拨打相应的电话求救,对特殊人群的出行能够提供切实有效的帮助。 相似文献
14.
15.
16.
Fall detection is one of the most important health care issues for elderly people at home, which can lead to severe injuries. With the advances and conveniences in computer vision in the last few decades, computer vision-based methods provide a promising way for detecting falls. In this paper, we propose a novel vision-based fall detection method for monitoring elderly people in house care environment. The foreground human silhouette is extracted via background modeling and tracked throughout the video sequence. The human body is represented with ellipse fitting, and the silhouette motion is modeled by an integrated normalized motion energy image computed over a short-term video sequence. Then, the shape deformation quantified from the fitted silhouettes is used as the features to distinguish different postures of the human. Finally, different postures are classified via a multi-class support vector machine and a context-free grammar-based method that provides longer range temporal constraints can verify the detected falls. Extensive experiments show that the proposed method has achieved a reliable result compared with other common methods. 相似文献
17.
18.
False alarm, nuclear danger 总被引:1,自引:0,他引:1
The radar and satellite networks meant to warn Russia of the imminence of a missile attack are breaking down, heightening the risk of accidental nuclear war. The authors discuss the reasons for the this which include ageing satellites and the floundering Russian economy. The authors discuss a false alarm in 1995 and how it highlighted the deficiencies in Russia's early warning system. The state of the satellites involved in early warning systems, both Russian and American, are discussed. The offer of assistance by the US to Russia with respect to Russia's early warning systems is also discussed 相似文献
19.
该文提出了一种基于STC90C52RC单片机的尿不湿手机报警装置。该装置主要由单片机、电源模块、湿度传感器检测模块、LED灯光报警模块、控制模块、GSM模块、键盘模块、LCD显示模块、机械开关等组成,借助成熟的GSM移动网络,不仅能精确检测到被护理人的排便,而且可以通过手机进行报警,真正实现了远距离、高效率报警。 相似文献
20.
Xianping Chen Feng Luo Min Yuan Dingli Xie Li Shen Kai Zheng Zeping Wang Xiandong Li Lu‐Qi Tao 《Advanced functional materials》2019,29(51)
Diseases such as cardiovascular problems and sleep apnea cause mass deaths annually due to a lack of timely and portable monitoring and alarm measures. Various wearable devices for health monitoring have been intensely researched to reduce mortality. However, these devices themselves can only detect physiological signals; they cannot sound an alarm. Therefore, they must rely on mobile phones or other peripheral devices such as speakers or vibration motors to sound an alarm, which may result in a patient missing the optimal treatment. It is valuable to develop a self‐alarm health monitoring device with the dual functions of physiological signal detection and sound alarm simultaneously. A one‐step laser‐induced graphene (LIG)‐based electronic skin (E‐skin) is fabricated to perform health monitoring and alarm at the same time, which benefit from its both excellent mechanical and acoustical performance. These customized shutter‐patterned E‐skins have an ultrahigh sensitivity of 316.3 and can detect various biosignals such as wrist pulse, respiratory, etc. They also have a self‐alarm function and can sound an alarm when detecting abnormal situations. This study addresses the multifunctional integration required for multisensors, which will open further applications in wearable sensors and health‐care devices. 相似文献