接觸自供電人機(jī)界面的機(jī)會(huì)

　　與無(wú)生命的物體交談過(guò)去被認(rèn)為是邊緣性行為，但今天我們不眨眼皮。也許我們應(yīng)該！眼動(dòng)（或缺乏運(yùn)動(dòng)）是汽車系統(tǒng)可以判斷司機(jī)是否打瞌睡的一種方式。由于傳感器、處理器/控制器和無(wú)線網(wǎng)絡(luò)技術(shù)的結(jié)合，我們?nèi)祟惻c電子產(chǎn)品的接口正在迅速變化。

　　觸摸屏，手勢(shì)和語(yǔ)音識(shí)別應(yīng)用于今天的人機(jī)界面（HMI）流行的技術(shù)之一。應(yīng)用包括智能家居和建筑、汽車、工業(yè)自動(dòng)化，當(dāng)然還有移動(dòng)數(shù)字消費(fèi)設(shè)備。基于無(wú)線網(wǎng)絡(luò)的連通性是等式中的另一要素。

　　本文的重點(diǎn)是說(shuō)明能量收集在HMI連接中的潛在作用。關(guān)鍵應(yīng)用是便攜式和可穿戴設(shè)備，功耗仍然是一個(gè)關(guān)鍵問(wèn)題，包括醫(yī)療設(shè)備，運(yùn)動(dòng)監(jiān)控和遙控接口設(shè)備。

　　Figure 1： Developed jointly by SMK and Hillcrest Labs， the Scoop Pointer Remote for TVs and Scoop Wireless Presenter for PCs， enable motion， gesture and cursor control. These air mouse-type devices use Bluetooth Low Energy RF technology from Texas Instruments.

　　Bluetooth Low Energy， ZigBee RF4CE and ZigBee PRO Green Power are the protocols that fit best with energy harvesting techniques. A wide range of devices supporting these standards is available.

　　Texas Instruments， for example， offers a number of complementary devices that together can form a solution for wearable devices that can be powered by scavenged energy. These include the TPS6273x range of high frequency synchronous step down DC-DC converters， and the CC2541power-optimized SoC for Bluetooth low energy connectivity， both available with evaluation kits.