本文選題：電磁波衰減　切入點(diǎn)：平均功率流密度　出處：《無(wú)線通信技術(shù)》2015年04期

【摘要】：滑坡等災(zāi)害發(fā)生后,如果可穿戴的無(wú)線呼救設(shè)備,在地面無(wú)線信號(hào)的激勵(lì)下,可將被掩埋人員的身份等信息發(fā)送出來(lái),進(jìn)行定位與人數(shù)統(tǒng)計(jì),有利于提高救援效率減少損失。根據(jù)天線輻射理論公式估算,開(kāi)放的433MHz頻率能夠用于可穿戴無(wú)線呼救通信。據(jù)此選用Si4463和STM32F103系列芯片設(shè)計(jì)了無(wú)線搜呼救設(shè)備的模型,并設(shè)計(jì)了無(wú)線收發(fā)程序和防碰撞程序軟件。相似性模擬實(shí)驗(yàn)表明,微型、低功率433MHz頻段發(fā)收設(shè)備,巖土到地面的單程有效通信距離約為8.5m。
[Abstract]:After the landslide and other disasters, if wearable wireless call for rescue equipment, under the ground wireless signal incentive, can be buried person's identity and other information sent out, location and statistics, which is conducive to improve the rescue efficiency and reduce losses.According to the theoretical formula of antenna radiation, the open 433MHz frequency can be used for wearable wireless distress communication.According to this, Si4463 and STM32F103 series chips are selected to design the model of wireless search and rescue equipment, and the wireless transceiver program and anti-collision program software are designed.The similarity simulation experiments show that the effective communication distance between geotechnical and ground is about 8.5 mm. for micro-low power 433MHz frequency generation and collection equipment.
【作者單位】： 江蘇大學(xué)計(jì)算機(jī)科學(xué)與通信工程學(xué)院;
【分類號(hào)】：TN92
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本文編號(hào)：1728463