A wearable human body communication method and device that can be adaptively optimized
A human body communication and self-adaptive technology, applied in the field of human body communication, can solve problems such as images that do not consider transmission efficiency, weak radiation directionality, and weak anti-interference ability, so as to increase bandwidth and anti-interference performance and reduce interference. Possibility, the effect of a wide range of carrier frequency selection
Active Publication Date: 2021-06-25
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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Problems solved by technology
Different height, body fat, arm length, waist circumference, arm circumference, and body composition make the transmission efficiency vary. In the prior art, the image of transmission efficiency due to physiological characteristics such as height, body fat, and tissue composition is not considered.
[0006] 3) Most of the existing human body communication devices use metal electrodes. When the metal electrodes are close to the human body, the radiation direction is omnidirectional radiation, that is, the radiation directionality is not strong and the attenuation is large
However, most of the current body area network devices use a single frequency channel, which has limited bandwidth and weak anti-interference ability.
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[0044]Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0045] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0046] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.
[0047] In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have diff...
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The invention discloses a self-adaptive and optimized wearable human body communication method and device. The method includes: constructing an association model between the dielectric characteristics of the human body and the transmission frequency; detecting electromagnetic interference in the transmission environment around the communication sending end, and obtaining electromagnetic interference spectrum information; inputting the human body dielectric characteristics of the communication sending end into the association model , obtaining a plurality of candidate transmission frequencies; using the electromagnetic interference spectrum information, and taking the channel capacity with the least interference as an optimization goal, selecting a working carrier frequency from the plurality of candidate transmission frequencies for communication. According to different physiological characteristics and the avoidance of peripheral electromagnetic wave interference, the present invention self-adaptively selects the working carrier frequency, so that the transmission efficiency is higher, and the bandwidth and anti-interference performance are effectively increased.
Description
technical field [0001] The present invention relates to the technical field of human body communication, and more specifically, to a wearable human body communication method and device that can be adaptively optimized. Background technique [0002] With the development of integrated electronic technology and communication technology, the human body sensor network is becoming a research hotspot of researchers at home and abroad. Common short-range communication technologies include Bluetooth, ZigBee, and wifi, etc., but these protocols and technologies have many problems in adapting to their relatively limited application scenarios. Human body communication technology is generally considered to be an ideal communication method for building a human body wireless sensor network (BSN) in the future. Among them, the capacitively coupled human body communication was first proposed by Zimmerman of the Massachusetts Institute of Technology in the 1990s. The essence of human body co...
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IPC IPC(8): H04B13/00H04B17/336H04B17/345H04B17/382H04B15/00H04B7/0413H04W16/10H04W72/04H04W72/08G06N3/04G06N3/08H04W72/54
CPCH04B13/005H04B17/345H04B17/336H04B17/382H04B15/00H04B7/0413H04W16/10H04W72/0453G06N3/08G06N3/045H04W72/542
Inventor 李四楠聂泽东李景振刘宇航王磊
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI