快速發(fā)展遠(yuǎn)程藍(lán)牙信標(biāo)的解決方案

　　信標(biāo)技術(shù)旨在在短時(shí)間內(nèi)向用戶提供信息，例如在零售商店或購物中心。雖然對(duì)基于幾百米傳輸信標(biāo)能力的新興基于位置的應(yīng)用程序感到興奮，但開發(fā)者受到了傳統(tǒng)的藍(lán)牙低能量（無線）收音機(jī)的限制。

　　為了解決遠(yuǎn)程信標(biāo)應(yīng)用中出現(xiàn)的新問題，開發(fā)人員需要能夠提供更高傳輸功率輸出的抽象解決方案，以及能夠加速這些設(shè)計(jì)開發(fā)的開發(fā)工具。荷蘭半導(dǎo)體和硅實(shí)驗(yàn)室的藍(lán)牙收發(fā)器通過在一個(gè)包中結(jié)合藍(lán)牙無線電和功率放大器來滿足這一需求。

　　本文將描述什么是信標(biāo)，討論設(shè)計(jì)選項(xiàng)，并提供一些解決方案，以幫助開發(fā)人員快速地使用遠(yuǎn)程啟用的信標(biāo)實(shí)現(xiàn)并運(yùn)行。

　　Beacons beckon for simple， long-range implementations

　　Beacon technology offers a relatively simple mechanism for building proximity-aware services. By periodically transmitting a unique identifier and other data， beacons advertise their presence within some limited physical area. By using Bluetooth wireless communications， beacon applications can exploit the nearly universal support for Bluetooth in smartphones and other mobile devices. Running on these mobile devices， app developers can exploit the presence of a specific beacon signal to present information pertinent to the mobile user’s physical location. For example， within a retail store， an app can use beacons to detect when an individual approaches a particular section or counter within a store and display relevant store coupons.

　　Although these short-range retail applications were among the first uses of beacons， long-range beacon opportunities are emerging in broader segments including asset management， transportation， mass transit， airline terminals， large events， and wherever proximity-aware services can create greater efficiency of movement of vehicles， packages， or individuals. In serving wide physical areas， however， suitable beacon hardware designs require the ability to advertise at ranges well beyond those supported in retail beacons. Yet， hardware designers find some fundamental constraints in extending the range of their wireless systems.