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VOA慢速英語：無電池手機(jī)通過無線電信號獲取電能

所屬教程:Technology Report

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2017年08月21日

手機(jī)版

掃描二維碼方便學(xué)習(xí)和分享

[00:00.16]Researchers have built a cellphone that does not need batteries. [00:06.76]They say the phone can send and receive calls [00:12.28]using power from radio signals or light. [00:17.93]A team from the University of Washington in Seattle [00:23.48]is currently testing a prototype of the phone. [00:28.42]The researchers were able to develop a device [00:41.26]that uses much less power than any cellphones used today. [00:48.48]This design allows the new phone to run on very small amounts of electricity. [00:56.76]Team member Vamsi Talla says the phone picks up small electrical signals [01:05.54]known as radio frequency, or RF waves. [01:12.05]"Ambient RF waves are all around us. [01:15.16]So, as an example, your FM station broadcasts radio waves, [01:19.53]your AM stations do that, your TV stations, your cellphone towers. [01:23.27]They all are transmitting RF waves." [01:25.66]The phone can also convert ambient light [01:30.28]into electrical current for power, according to the researchers. [01:37.04]Shyam Gollakota is a professor in the Paul G. Allen School [01:43.92]of Computer Science and Engineering. [01:47.52]He says the invention demonstrates great progress in new cellphone technology. [01:56.44]"This battery-free phone is a major leap [01:59.89]in terms of the capabilities of battery-free devices. [02:02.65]Because now we have a streaming device [02:04.76]that can continuously talk as well as receive data, which is basically a phone." [02:09.26]The phone identifies speech going into the microphone [02:14.66]and coming out of the speaker. [02:17.92]These speech vibrations are then converted into radio signals [02:24.60]by a device called a base station. [02:28.82]The prototype has been able to operate on power gathered from radio signals [02:36.20]from a base station up to nine meters away, according to the researchers. [02:43.90]Using power from ambient light, it has communicated [02:49.28]with a base station up to 15 meters away. [02:54.42]The team says the base station operating model could eventually be widely used [03:02.01]by putting the technology in existing cellphone towers and Wi-Fi systems. [03:10.84]The researchers demonstrated the phone in a test with the calling service Skype. [03:18.60]During the test, the device received an incoming call, [03:23.76]made an outgoing call and was able to put callers on hold. [03:29.52]The prototype has limited capabilities because it is not a finished product. [03:37.28]For example, users now have to use headphones to hear calls [03:43.60]and must also press a button to change between talking and listening. [03:50.30]And currently, it can only be used for making calls. [03:57.44]However, the team plans to develop new prototypes [04:02.28]that could handle texting, photos and internet use. [04:07.66]They are also working on a version that could use a small solar cell to provide power. [04:17.40]Vamsi Talla says he thinks the technology [04:21.80]might be able to greatly change the capabilities of all phones. [04:27.48]This includes solving one of the biggest problems for all users - dead batteries. [04:37.00]"In the future every smartphone will come with a battery-free mode [04:40.64]where you can at least make a voice call when your battery's dead." [04:43.96]The researchers are hoping to complete a finished product [04:49.56]within about nine months. [04:52.56]I'm Bryan Lynn.

00:00

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New Battery-Free Cellphone Is Powered by Radio Signals

無電池手機(jī)通過無線電信號獲取電能

Researchers have built a cellphone that does not need batteries. They say the phone can send and receive calls using power from radio signals or light.

研究人員開發(fā)出了一種無需電池的手機(jī)。他們稱這種電話可以使用從無線電信號或光線中獲取的電能來實(shí)現(xiàn)接打電話。

A team from the University of Washington in Seattle is currently testing a prototype of the phone.

西雅圖市華盛頓大學(xué)的一個團(tuán)隊(duì)目前正在測試這種手機(jī)的原型機(jī)。

The researchers were able to develop a device that uses much less power than any cellphones used today. This design allows the new phone to run on very small amounts of electricity.

研究人員開發(fā)出了一種耗電遠(yuǎn)低于目前任何手機(jī)的裝置。這種設(shè)計(jì)使得這種新手機(jī)能夠以極小的電量運(yùn)行。

Team member Vamsi Talla says the phone picks up small electrical signals known as radio frequency, or RF waves.

該團(tuán)隊(duì)成員Vamsi Talla表示，這種手機(jī)能接收所謂的射頻波。

"Ambient RF waves are all around us. So, as an example, your FM station broadcasts radio waves, your AM stations do that, your TV stations, your cellphone towers. They all are transmitting RF waves."

他說：“周邊環(huán)境的射頻波無處不在。例如，F(xiàn)M電臺會發(fā)出無線電波，AM電臺、電視臺和手機(jī)信號塔也一樣，他們都會發(fā)出射頻波。”

The phone can also convert ambient light into electrical current for power, according to the researchers.

研究人員表示，這種手機(jī)還能將環(huán)境光線轉(zhuǎn)化為電能。

Shyam Gollakota is a professor in the Paul G. Allen School of Computer Science and Engineering. He says the invention demonstrates great progress in new cellphone technology.

Shyam Gollakota是(華盛頓大學(xué))保羅·艾倫計(jì)算機(jī)科學(xué)與工程學(xué)院的教授。他說，這項(xiàng)新發(fā)明讓新型手機(jī)技術(shù)取得了很大進(jìn)步。

"This battery-free phone is a major leap in terms of the capabilities of battery-free devices. Because now we have a streaming device that can continuously talk as well as receive data, which is basically a phone."

他說：“這種無需電池的手機(jī)是無電池設(shè)備在性能方面的一次重大飛躍。因?yàn)槲覀儸F(xiàn)在開發(fā)出了這種可以持續(xù)通話和接收數(shù)據(jù)的流媒體設(shè)備，這基本上就是一種電話。”

The phone identifies speech going into the microphone and coming out of the speaker. These speech vibrations are then converted into radio signals by a device called a base station.

該手機(jī)能識別出進(jìn)入麥克風(fēng)的語音并從揚(yáng)聲器中播放出來。這些語音震動然后被一種稱之為基站的設(shè)備轉(zhuǎn)換為無線電信號。

The prototype has been able to operate on power gathered from radio signals from a base station up to nine meters away, according to the researchers. Using power from ambient light, it has communicated with a base station up to 15 meters away.

研究人員稱，該原型機(jī)能夠從9米外的基站發(fā)出的無線電信號中的收集電能來運(yùn)行。該手機(jī)還使用來自環(huán)境光線的電能同15米外的基站進(jìn)行了通信。

The team says the base station operating model could eventually be widely used by putting the technology in existing cellphone towers and Wi-Fi systems.

該團(tuán)隊(duì)表示，這種基站運(yùn)行模式最終可以通過將這種技術(shù)集成到現(xiàn)有的手機(jī)信號塔和Wi-Fi系統(tǒng)中得到廣泛應(yīng)用。

The researchers demonstrated the phone in a test with the calling service Skype. During the test, the device received an incoming call, made an outgoing call and was able to put callers on hold.

研究人員在一次Skype呼叫測試中展示了這種手機(jī)。在測試中，這種設(shè)備實(shí)現(xiàn)了接、打電話并且能夠保持呼叫等待。

The prototype has limited capabilities because it is not a finished product. For example, users now have to use headphones to hear calls and must also press a button to change between talking and listening. And currently, it can only be used for making calls.

這種原型機(jī)的性能有限，因?yàn)樗皇浅善?。例如，使用者現(xiàn)在必須使用耳機(jī)來接聽電話，還必須按住一個按鈕才能在聽和說之間切換。而且目前它只能用于撥打電話。

However, the team plans to develop new prototypes that could handle texting, photos and internet use. They are also working on a version that could use a small solar cell to provide power.

然而該團(tuán)隊(duì)計(jì)劃開發(fā)出可以發(fā)短信、照片和上網(wǎng)的新原型機(jī)。他們還致力于開發(fā)出使用小型太陽能電池提供電能的版本。

Vamsi Talla says he thinks the technology might be able to greatly change the capabilities of all phones.This includes solving one of the biggest problems for all users - dead batteries.

Vamsi Talla表示，他認(rèn)為這項(xiàng)技術(shù)也許可以極大地改變所有手機(jī)的性能，包括解決所有用戶面臨的最大問題：電量耗盡。

"In the future every smartphone will come with a battery-free mode where you can at least make a voice call when your battery's dead."

他說：“未來每部智能手機(jī)都將配備無電池模式，這樣電池沒電時(shí)至少也能撥打語音電話。”

The researchers are hoping to complete a finished product within about nine months.

研究人員希望在9個月內(nèi)做出成品。

I'm Bryan Lynn.

我是布萊恩·林恩。

Researchers have built a cellphone that does not need batteries. They say the phone can send and receive calls using power from radio signals or light.

A team from the University of Washington in Seattle is currently testing a prototype of the phone.

The researchers were able to develop a device that uses much less power than any cellphones used today. This design allows the new phone to run on very small amounts of electricity.

Team member Vamsi Talla says the phone picks up small electrical signals known as radio frequency, or RF waves.

“Ambient RF waves are all around us. So, as an example, your FM station broadcasts radio waves, your AM stations do that, your TV stations, your cellphone towers. They all are transmitting RF waves.”

The phone can also convert ambient light into electrical current for power, according to the researchers.

Shyam Gollakota is a professor in the Paul G. Allen School of Computer Science and Engineering. He says the invention demonstrates great progress in new cellphone technology.

“This battery-free phone is a major leap in terms of the capabilities of battery-free devices. Because now we have a streaming device that can continuously talk as well as receive data, which is basically a phone.”

The phone identifies speech going into the microphone and coming out of the speaker. These speech vibrations are then converted into radio signals by a device called a base station.?

?The prototype has been able to operate on power gathered from radio signals from a base station up to nine meters away, according to the researchers. Using power from ambient light, it has communicated with a base station up to 15 meters away.

The team says the base station operating model could eventually be widely used by putting the technology in existing cellphone towers and Wi-Fi systems.

The researchers demonstrated the phone in a test with the calling service Skype. During the test, the device received an incoming call, made an outgoing call and was able to put callers on hold.

The prototype has limited capabilities because it is not a finished product. For example, users now have to use headphones to hear calls and must also press a button to change between talking and listening. And currently, it can only be used for making calls.

?However, the team plans to develop new prototypes that could handle texting, photos and internet use. They are also working on a version that could use a small solar cell to provide power.

Vamsi Talla says he thinks the technology might be able to greatly change the capabilities of all phones.This includes solving one of the biggest problems for all users - dead batteries.

“In the future every smartphone will come with a battery-free mode where you can at least make a voice call when your battery's dead.”

The researchers are hoping to complete a finished product within about nine months.

I’m Bryan Lynn.

_____________________________________________________________

Words in This Story

prototype – n. original or first model of something from which others are developed or made

ambient – adj. existing in the surrounding area

convert – v. change from one thing into another

leap – n. sudden change or improvement in something

microphone – n. device people speak into that records sounds

vibration – n. continuous shaking movement

button – n. small part of a machine or device that is pushed to make it work