Your next barista could be a coffee-delivering drone.

你的下一位咖啡师，或许就会是一架无人机了。

IBM has secured a patent for a coffee drone that not only flies around public spaces to deliver cups of brew but also predicts which people need caffeine pick-me-ups.

IBM已获得一项咖啡无人机的专利，这个咖啡无人机不仅可以在公共场所周围飞行来运送咖啡，而且还可以预测哪些人需要含咖啡因的提神饮料。

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According to paperwork filed with the U.S.Patent and Trademark Office, the device could be used in an office, cafe orevent setting, where a preordered cup of joe would be delivered to the drinker or where a thirsty individual would flag it down. Facial- or voice-recognition software, an electronic ID tag or Bluetooth from a person's smartphone ensures the coffee gets to the right person.

根据提交给美国专利和商标局的文件显示，该设备可以用于办公室、咖啡馆或活动场所，在那里，预订的咖啡将被送到需要的人手中，或者口渴的人会示意它停下。面部或语音识别软件，电子身份标签或人们智能手机上的蓝牙可确保咖啡能够配送给正确的人。

The patent describes how the drone would determine a person's 'cognitive state' to assess if they need a cup of joe.

这项专利还描述了无人机如何根据一个人的“认知状态”来评估他们是否需要一杯咖啡。

'The assessment and estimate is based on any of: sleep quality, electronic calendar, biometrics, blood pressure, pupildilation, facial expression analysis, the time an individual woke up in the morning, and gesture analysis,' the document states.

文件显示：“评估与预测基于以下任一特征：睡眠质量、电子日历、生物测定、血压、瞳孔放大、面部表情分析、起床时间以及手势分析。”

These factors would be detected via some kind of Fitbit-style wearable, or by analyzing a person's calendar.

这些特征可以通过一些可穿戴设备或个人电子日历进行检测。

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IBM's patent form also envisions applications for bars, where the drone can determine whether a person has drunk too much alcohol by looking for sleepiness (like the head angled downward or drooping eyelids), unsteadiness or slurred speech cues. If any are noted, the drone wouldn't bring any more drinks and would ignore the individual if he or she tries to flag it down.

IBM的专利还设想了在酒吧的应用，无人机可以通过寻找困倦的状态（如头部向下倾斜或耷拉的眼皮）、不稳定或含糊的语言来判断一个人是否喝了过量的酒。如果上述任意一点被察觉到，无人机便不会再带来更多的饮品，如果他们试图让无人机停下，它便会自动忽略。