人体曲率对以身体为中心的无线通信的影响
概括
人体共振人体共振人体通信 (BR HBC) 显示的频道增强变化与接收器位置相比较小的电准静态HBC. 这一进步提高了可穿戴设备的可靠性,用于远程健康监测.
科学领域:
- 生物医学工程 生物医学工程
- 无线通信无线通信
- 可穿戴技术可穿戴技术
背景情况:
- 可穿戴技术对于远程健康监测和健身跟踪至关重要,人工智能增强了个性化诊断.
- 传统的射频 (RF) 无线方法面临安全性,功率和数据速率的限制,特别是在非视线 (NLoS) 场景中.
- 电半静电人体通信 (EQS HBC) 提供了更好的安全性和能源效率,但受到了对设备定位的频道增强灵敏度的影响.
研究的目的:
- 分析身体曲率对人体共振人体通信 (BR HBC) 传输特征的影响.
- 将BR HBC的定位灵敏度与可穿戴通信的EQS HBC进行比较.
- 评估BR HBC作为RF和EQS HBC的潜在替代品,用于可靠的NLoS可穿戴网络.
主要方法:
- 研究了身体曲率对BR HBC通道增益和转移特征的影响.
- 对接收器 (Rx) 和发射器 (Tx) 位置变化的频道增益的灵敏度进行了比较,用于BR HBC和EQS HBC.
- 在干周围的短通道 (≤50厘米) 和较长的环节 (≤60厘米或更长) 的评估性能.
主要成果:
- 与短通道 (<50厘米) 的EQS HBC相比,BR HBC在Rx位置变化时显示出明显较少的通道增益变化.
- 与EQS相比,BR HBC的灵敏度益处随着链路长度的增加 (> 60厘米) 减少,但仍然优于蓝牙,MedRadio和ZigBee等辐射方法.
- 在辐射技术需要视线的情况下,BR HBC在NLoS场景中保持了表现.
结论:
- 与EQS HBC和传统射频方法相比,BR HBC在NLoS可穿戴应用中提供了针对定位变化的增强强度.
- 这项技术可以实现可靠的,模仿身体的无线网络,用于先进的个性化医疗保健和诊断.
- 在不断扩大的可穿戴技术领域,BR HBC为节能,高速通信提供了一个有希望的方向.
更多相关视频
06:48Author Spotlight: Advancements in 3D Optical Imaging for Comprehensive Body Composition Assessment in Modern Research
Published on: June 7, 2024
2.0K
10:23Author Spotlight: Computing the Effects of a Local Radiofrequency Hyperthermia Intervention on Tumor Biomechanics
Published on: December 1, 2023
928
相关概念视频
Centroid of a Body: Problem Solving
1.8K
The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
The x-coordinates and y-coordinates of each element's...
1.8K
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
838
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
838
Centroid of a Body
1.7K
The centroid is an important concept in engineering, physics, and mechanics. It is the geometric center of a body. It always lies within the body except in cases with holes or cavities. When the material that a body is composed of is uniform or homogeneous, the centroid coincides with its center of mass or the center of gravity.
For a homogeneous body with constant density, the centroid can usually be found using equations representing a balance of the moments of the body's volume. If the...
For a homogeneous body with constant density, the centroid can usually be found using equations representing a balance of the moments of the body's volume. If the...
1.7K
Bending of Curved Members - Strain Analysis
474
The mechanics of deformation in curved members, such as beams or arches, under bending moments, involve complex responses. When such a member, symmetric about the y-axis and shaped like a segment of a circle centered at point C, is subjected to equal and opposite forces, its curvature and surface lengths change significantly. This alteration results in the shift of the curvature's center from C to C', indicating a tighter curve.
The important part of bending analysis for such a member...
The important part of bending analysis for such a member...
474
Bending of Curved Members - Neutral Surface
464
In curved beams, unlike straight beams, the stress distribution across the cross-section is not uniform due to the beam's curvature. This non-uniformity arises because the neutral axis, where stress is zero, does not align with the centroid of the section. In a curved beam, the strain varies along the section as a function of the distance from the neutral axis.
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...
Consider the curved member described in the previous lesson. According to Hooke's law, which relates stress to strain within the...
464
Dynamics of Circular Motion
23.2K
An object undergoing circular motion, like a race car, is accelerating because it is changing the direction of its velocity. This centrally directed acceleration is called centripetal acceleration. This acceleration acts along the radius of the curved path (thus is also referred to as radial acceleration).
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
Any acceleration must be produced by some force. Therefore, any force or combination of forces can cause centripetal acceleration. A few examples include the tension in the rope on a...
23.2K
