硬件复兴的潮流

众所周知文艺复兴经历了中世纪漫长的“黑暗时期”,终因思想的开放,涌现了大量科技与文艺的人文光芒。

放在今天,经历了漫长的intel的封闭,终于我们看到了硬件开源的曙光。硬件对于普通人不再是神秘而无法参与的工作,像软件开源思想那样具有号召力,硬件也终于暂露出了它的原始魅力,所谓原始魅力,不是指成品,譬如手机。我们被手机这个硬件束缚了十几年,苹果、安卓,凭借软件的多元化把手机打造成了一个平台。因为我们每天安逸于手机的世界里,所以从不会去想原始硬件的魅力,比如一个扬声器,一个摄像头,一个信号发射器,那些我们小时候组装收音机的喜悦在今天已经难以看到,原因有二:1. 你组装一个收音机依旧可以,但是喜悦感还不如你去app store里下载一个新游戏或许。2. 你无法轻松的组装更为高级的硬件设备,至少不像软件工程师写出一个软件容易。

从google出了glass以后,硬件与互联网开始不是两路人了,以前电视归电视,电脑归电脑,眼镜归眼镜,屏幕归屏幕,而现在硬件和互联网要一起让你的一切硬件都联网,你可以设想你组装了一个收音机,但仅仅改进一点,它的调频和声控按钮都在你的iphone里,你可以在任何有网络的地方控制你的收音机,并通过iphone的听筒获得信息。当然了这个点子毫无实践的意义,任何一款智能手机都能方便的收听全球的广播节目。然而这个简单的硬件和互联网组合却会在其他领域的应用中显得熠熠生辉:

1. 硬件联网,不外乎其一 硬件和一个server联网,server实时处理硬件的数据,其二就是硬件和一个phone联网,手机实时和硬件通信。显然传统的互联网模式都只有一个server 服务所有的终端,但是若是让硬件功能跟着你走,就势必要让硬件跟着你的手机走,要知道server是不会动的。所以个域网是必要的。

2. 创客,不是纯粹的极客,他们懂得编程,更懂得如何make something real. 所以创客的成果更多是硬件成果,这个词最近流行甚于极客,背后也是源于硬件开发的复兴。

3. 一些硬件复兴的端倪:

  • tile,http://www.thetileapp.com/ 一个简单的小硬件设备,一旦和你的手机配对并开始适时通讯,那么tile所在之处均在你的控制之中,放钱包里,放车子上,防丢,就看你怎么用了。
  • 云相框, 把互联网社交网络分享的照片 显示在独立的屏幕上。 你在手机这里生活,却是屏幕那头的人的风景
  • parrot,遥控飞机很早有,但若上升到飞行器还需要一些装置,用你的手机控制,遥控飞机可以航拍,手机可以观看。
  • 还有一些穿戴设备类似实时体温计、脉搏计、血压计,戴在身上,却时刻采集你的体征到手机里,进而分析和预测

 

末了,我想做一个真的“时光机”。

 

 

 

FC-PF FOR MANEUVERING TARGET TRACKING

By X. F. Wang, J.-F. Chen, Z.-G. Shi, and K. S. Chen

Abstract:

In this paper, we propose a novel fuzzy-control-based particle filter (FCPF) for maneuvering target tracking, which combines the advantages of standard particle filter (SPF) and multiple model particle filter (MMPF). That is, the SPF is adopted during non-maneuvering movement while the MMPF is adopted during maneuvering movement. The key point of the FCPF is to use a fuzzy controller, which could imitate the thoughts of human beings in some degree, to detect the target’s maneuver and use a backward correction sub-algorithm to alleviate the performance degradation of MMPF caused by detection delay. Simulation results indicate that the proposed algorithm has a much better tracking accuracy than the SPF while keeps approximately equal computational complexity. Compared with MMPF, both algorithms have no tracking lost, but the tracking accuracy of the proposed FCPF is a little better than the MMPF, and the FCPF consumes about 66% computation time of the MMPF. Thus, the proposed algorithm offers a more effective way for maneuvering target tracking.

Citation:
X. Wang, J.-F. Chen, Z.-G. Shi, and K. S. Chen, “Fuzzy-control-based particle filter for maneuvering target tracking,” Progress In Electromagnetics Research, Vol. 118, 1-15, 2011.
http://www.jpier.org/pier/pier.php?paper=11051907

Full Article PDF (470 KB)

此文虽水,实在来自不易啊,从二师兄这里接手来到现在快一年了。。。历经中文版悲剧,JZUS-A悲剧,终于又修改一个多月,被孔金瓯老先生的杂志PIER相中!!!

Research of coupling coefficient extraction of a cavity resonator

Wang, X.F.;   Shi, Z.G.;   Chen, K.S.;

Dept. of Inf. & Electron. Eng., Zhejiang Univ., Hangzhou, China

This paper appears in: Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Issue Date: 20-22 April 2011
On page(s): 1 – 4
Location: Hangzhou
Print ISBN: 978-1-4577-0625-7
INSPEC Accession Number: 12031043
Date of Current Version: 27 五月 2011

ABSTRACT

The electromagnetic coupling coefficient is an important parameter in circuit modeling and simulation because it characterizes the transducer and useful for deducing equivalent circuits. In this paper, we proposed a numeric coupling coefficient extraction method based on perturbation theory and commercially available CST software of solving the coupling coefficient of the rectangular waveguide resonator, which is coupling with a coaxial cable. Simulation results indicate that this method is consistent with the theoretical method, and it is commonly used for rectangular or cylindrical cavities. Thus, the proposed method could offer an effective way of solving coupling coefficients extraction problem for cavity resonators.

Download: Revised-Research_of_solving_coupling_coefficient_of_cavity_resonator

Novel Millimeter Wave Power-Combining System In 3-D Packaging Level

Author:Xianfeng Wang, Zhiguo Shi, Kangsheng Chen

Abstract:

This paper presents a novel millimeter wave power- combining system which can be fabricated with modern packaging technology and compatible with CMOS process. The system is comprised of a silicon integrated waveguide (SIW) resonator coupled with numerous λ/4 standing wave resonators, all of which can be fabricated by using via holes in 3-D packaging level. The coupling between the SIW resonator and the λ/4 standing wave resonators can be fabricated by eroding slots in the metal layer. An example system operating at 77GHz is illustrated and simulation results of electromagnetic field distribution in the SIW resonator and around the λ/4 standing wave resonators from professional electromagnetic simulation tool are presented. It is shown that the resonant frequency and phase of these λ/4 standing wave resonators are controlled by the SIW resonator and the power of all these λ/4 standing wave resonators can be combined in the SIW resonator. The SIW resonator operates in TE102 mode and has a quality factor of more than 500, which is much higher than that of each independent λ/4 standing wave resonators with quality factor of about 150. Thus the proposed power-combining system fabricated in packaging level can work effectively and features a lower loss and high quality factor.

download the pdf.[IEEE—ICEPT—Novel Millimeter Wave Power-Combining System In 3-D Packaging Level]

2010 11th International Conference on Electronic Packaging Technology & High Density Packaging 733 978-1-4244-8142-2/10/$26.00 ©2010 IEEE

Pay me $26 anyone who download this shit!   haha