可穿戴式健康監(jiān)測器無線充電的發(fā)展

　　電池壽命是可穿戴系統(tǒng)在病人監(jiān)控的一大挑戰(zhàn)。更換電池是一項(xiàng)耗費(fèi)時(shí)間和昂貴的活動(dòng)，而電池更換時(shí)會(huì)丟失數(shù)據(jù)的風(fēng)險(xiǎn)。

　　有許多不同的方法來供電健康監(jiān)測設(shè)備。手表在過去使用太陽能發(fā)電，但顯示器的設(shè)計(jì)需要無線鏈接到網(wǎng)關(guān)或手機(jī)和功率范圍的傳感器測量生命體征如心率和血壓。這使得電力子系統(tǒng)的顯著需求，設(shè)計(jì)人員正在尋找創(chuàng)新的方式來應(yīng)對這些挑戰(zhàn)。

　　使用感應(yīng)線圈的短程無線充電被用于提供無線充電。無論是化學(xué)聯(lián)盟和齊聯(lián)盟已經(jīng)開發(fā)出無線充電規(guī)格，盡管這需要發(fā)射器和接收器線圈內(nèi)幾毫米的彼此。這消除了需要一個(gè)充電端口，可以使醫(yī)療監(jiān)護(hù)儀更緊湊，更易于使用。而不是一個(gè)微型USB充電連接器或?qū)Ｓ懈袷?，顯示器可以放置在充電板重新充電電池，通常在一夜之間。而這一款智能手表，不一定穿上睡覺時(shí)工作，醫(yī)療監(jiān)控需要戴上盡可能長的時(shí)間獲取所需的數(shù)據(jù)，如果有問題，觸發(fā)報(bào)警。

　　For example LinkCharge， developed by Semtech， is a complete， self-contained infrastructure wireless charging system that can be mounted underneath almost any non-metallic surface to charge a patient monitor simply and easily. LinkCharge （Figure 1） is available in a 15 W device with dual-mode standards compliance. The system is compatible with the AirFuel Alliance and Qi wireless charging standards， but can be used for other proprietary and faster charging devices. The Infrastructure Transmitter Module contains a custom controller for managing the Qi or AirFuel protocol and charging functions. The firmware in the non-volatile memory of the microcontroller can be modified to add user-defined functionality for a specific customer application， and for some models， allows upgradeability as standards change and mature.