一种新型功率控制算法在移动成人心率监测中的有效性:与固定功率传输的能量效率比较

D. Basu, G. S. Gupta, G. Moretti, X. Gui
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引用次数: 1

摘要

本文通过实验来评估一种新型自适应功率控制算法在典型家庭环境下移动成人心率监测场景中的能效效果。作为医疗保健的一部分,患有心脏相关疾病的人需要通过记录来进行监测,例如,定期记录他们的心率,以检查是否有任何异常。与此同时,预计有关人员应能够在指定设施内自由行动。人身上的无线传感器定期向中央基站发送数据。由于人是移动的,因此发射传感器与基站之间的距离随时间而变化。由于信号路径损耗主要取决于发射器和接收器之间的距离以及障碍物的数量和类型,因此使用发射功率控制来调制发射功率可能是明智的。通过功率控制,传感器可以调节电平,使其足以通过无线信道发送数据而不浪费能量。在无线传感器网络场景中,能量的节约是至关重要的,因为它们由寿命有限的电池供电。像心率监测传感器这样的关键应用,在电池耗尽之前,有望运行一段合理的时间。新的自适应功率控制算法采用智能调制方法,在需要时提高或降低传输功率水平。通过这种方法,可以延长无线传感器的工作寿命。作为本文实验方法的一部分,使用了两个不同年龄组的受试者。实验结果表明,采用该算法,节能效果至少提高了12%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effectiveness of a Novel Power Control Algorithm in Heart RateMonitoring of a Mobile Adult: Energy Efficiency Comparison with FixedPower Transmission
In this paper, experiments are conducted to evaluate the efficacy of a novel adaptive power control algorithm in terms of energy efficiency in heart rate monitoring scenario of a mobile adult in a typical home environment. As part of health care, persons with heart related problems are required to be monitored by logging for example, their heart rate on a regular basis to check for any anomaly. At the same time, it is expected that the person in question should be able to move freely within the given facility. The wireless sensors that are attached to the person send periodic data to the central base station. Since the person is mobile, the distance between the transmitting sensor and the base station changes with time. Since the signal path-loss is primarily dependent on distance and the number and type of obstructions between the transmitter and the receiver, it may be wise to use transmission power control to modulate the transmit power. Using power control, the sensor can adjust the level that is sufficient to send the data through the wireless channel without wasting energy. Conservation of energy is critical in wireless sensor network scenarios because they are powered by batteries which have limited lifetime. A critical application like the heart rate monitoring sensor is expected to operate for a reasonable amount of time before the battery dies. The novel adaptive power control algorithm uses intelligent modulation methods to ramp up or ramp down the transmission power level as and when required. By this method, the operational lifetime of the wireless sensor can be extended. As part of the experimental methodology for this paper, two subjects of different age groups have been used. Experimental results show that there is at least a 12% increase in the energy savings using the proposed algorithm.
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