研究人员打造戒指般大小的微型无线节点原型

上网时间: 2013年12月06日? 作者:Rick Merritt? 我来评论 【字号: ? ?小】

关键字:物联网? 传感器? 无线节点?

IoT on a Fingertip Is Researcher's Goal

In search of the virtual keyboard

Rick Merritt

SANTA CLARA, Calif. — "In a world where the display is on your glasses and the computer is in your pocket, you want your accelerometers on your fingertips. That way, you've got your keyboard, mouse, and air guitar whenever you want them."

This is no overcaffeinated comment heard in a Silicon Valley café. It's the goal of Kris Pister, a Berkeley professor who helped pioneer the Internet of Things and is now trying to pack a node on a chip -- and a fingertip.

The node Pister dreams of is a true system on a chip. It includes not just the microcontroller and radio, but also the sensors, the antenna, the crystals, and even a solar power source. "You just put it in the light, and it starts connecting with its neighbors," Pister told an audience at the IDTech event here. In fact, the device could have a variety of energy-scavaging blocks that tap into thermal, motion, and RF sources. It might even use a relatively high-bandwidth 60 GHz radio over very short ranges.

The technology for the integrated mote is still three to five years off, he said. It requires a laundry list of MEMS advances -- perhaps emerging techniques to replace crystals with reference time and frequency from the Net and more silicon miniaturization.

Berkeley's Gina is a step toward a node on a chip.

The Berkeley Sensor and Actuator Center, where Pister works, currently makes prototype devices "the size of big, ugly college rings," he said. "I am certain we will have single-chip nodes. We are very close."

The future looks bright, but in Pister's view, the present might be characterized as partly cloudy.

The oil and gas industries have led the industrial automation sector in real-world IoT adoption. The startup he founded -- Dust Networks, now part of Linear Technology -- helped enable several such deployments. But many glorious predictions have fallen far short. One market watcher predicted there would be more IoT nodes than cellphones by 2007, creating an $8.1 billion market. "That did not happen. We're not even remotely close to the numbers they predicted."

Several problems have stalled growth, such as a lack of reliable, low-cost, standard-based products from multiple vendors. "Sadly, most wireless products out there are crap, and they end up setting the industry back, slowing down adoption for everyone. Wireless is a really hard challenge that people in the academic and commercial worlds are still very much working on."

Help is on the way. Pister and other technologists have been driving a set of standards based on the widely used Internet Protocol. The IoT version is based on the IEEE 802.14.4e radio that uses a form of mesh networking with time synchronization, letting radios stay off most of the time to save power.

The last piece of the suite of standards is almost done in the Internet Engineering Task Force. That standard, 6TSCH for IPv6 time-synchronized channel hopping, will provide the routing glue to let nodes find one another in a mesh.

It has taken several years for the pieces to come together using the design-by-committee open standard processes at groups like the IETF and IEEE. "Standards are incredibly slow and painful. You should not go into standards if you don’t have a really strong will to live."

The emerging stack of standards marries IoT and IP.

The good news is engineers have already built OpenWSN, a working open-source implementation using the approach. "I feel the open standards solution is done."

Next stop: the fingernail-sized node.

标签 传感器/MEMS??

[ 投票数:? ] 收藏 ??? 打印版 ??? 推荐给同仁 ??? 发送查询 ??? ?订阅杂志

评论
免费订阅资讯速递
信息速递-请选择您感兴趣的技术领域:
  • 安防监控
  • 便携设备
  • 消费电子
  • 通信与网络
  • 分销与服务
  • 制造与测试
  • 工业与医疗
  • 汽车电子
  • 计算机与OA
  • 电源管理
  • 无源器件与模组
  • 新能源
  • 供应链管理
论坛速递
相关信息
  • 什么是传感器
  • 传感器是一种能把物理量或化学量转变成便于利用的电信号的器件,如图像传感器温度传感器压力传感器

  • 物联网是什么
  • 物联网在计算机互联网的基础上,将各种信息传感设备,如射频识别(RFID)装置、红外感应器、全球定位系统、激光扫描器等种种装置与互联网结合起来而形成的一个巨大网络。
    什么是物联网
    通过装置在各类物体上的电子标签(RFID),传感器、二维码等经过接口与无线网络相连,从而给物体赋予智能,可以实现人与物体的沟通和对话,也可以实现物体与物体互相间的沟通和对话。这种将物体联接起来的网络被称为“物联网”。

  • 什么是无线节点?
  • 国际电子商情提供相关无线节点技术文章及相关无线节点新闻趋势,及更新最新相关无线节点电子产品技术

?新浪微博推荐
Global Sources


编辑推荐
?大家正在说


打开微信“扫一扫”,打开网页后点击屏幕右上角分享按钮

1.扫描左侧二维码
2.点击右上角的分享按钮
3.选择分享给朋友
电子元器件数据手册下载
数据手册搜索

Datasheets China.com

《汽车电子特刊》

汽车电子系统在现代的汽车中占有的比重越来越高,对产品设计的工程师来说,产品的设计和验证面临着很多的挑战。本期《汽车电子特刊》将会向您呈现ADI技术对于汽车电子行业的应用等,还有IIC汽车电子论坛的精彩回顾哦!

扫一扫,关注最新资讯

esmc