面向感知微系统的系统级设计方法
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摘要
作为传感器系统的典型代表与技术发展趋势,感知微系统具有尺寸小、功能多与自供电等优势。然而当前的设计方法无法平衡其实用性能与约束性能之间的矛盾,使得其进一步发展陷入瓶颈。该文基于多学科设计优化思想提出一种针对感知微系统的系统级设计方法。该方法根据设计目标与各性能边界条件进行学科划分,在子系统分析器内进行参数分析后代入系统级优化器完成目标优化,最终实现感知微系统的优化设计。以重型车辆检测微系统为例,选取不同的设计目标进行系统级优化,并通过叠层集成的方式研制了验证样机。样机的性能测试结果与设计值相符,且满足优化设计目标的需求。该方法可行性和准确性表明,其能够在设计阶段平衡感知微系统的实用性能与约束性能,实现系统的最优化设计。
Micro sensing systems will be widely used in the future because they are small,multifunctional and self-powered.However,current designs do not balance their performance with key constraints which limits their further development.This paper presents a general design method for micro sensing systems based on multidisciplinary design optimization. The method facilitates optimization of micro sensing systems by analyzing the parameters in various subspaces to optimize the design. Vehicle detection micro-systems are used as an example with various optimization design targets for the prototypes.The test results coincide well with the design predictions and meet the design requirements. The method accuracy shows that it balances performance requirements with systems constraints during the design process to optimize the system.
Micro sensing systems will be widely used in the future because they are small,multifunctional and self-powered.However,current designs do not balance their performance with key constraints which limits their further development.This paper presents a general design method for micro sensing systems based on multidisciplinary design optimization. The method facilitates optimization of micro sensing systems by analyzing the parameters in various subspaces to optimize the design. Vehicle detection micro-systems are used as an example with various optimization design targets for the prototypes.The test results coincide well with the design predictions and meet the design requirements. The method accuracy shows that it balances performance requirements with systems constraints during the design process to optimize the system.
引文
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[2]Kim G,Lee Y,Foo Z,et al.A millimeter-scale wireless imaging system with continuous motion detection and energy harvesting[C]//2014Symposium on VLSI Circuits Digest of Technical Papers.Honolulu,HI,USA:IEEE,2014:1-2.
[3]Farshchi S,Nuyujukian P H,Pesterev A,et al.ATinyOS-based wireless neural sensing,archiving,and hosting system[C]//The 2nd International IEEE EMBS Conference on Neural Engineering,2005.Arlington,VA,USA:IEEE,2005:671-674.
[4]Polastre J,Szewczyk R,Culler D.Telos:Enabling ultra-low power wireless research[C]//Fourth International Symposium on Information Processing in Sensor Networks,2005.Boise,ID,USA:IEEE,2005:364-369.
[5]Jeong S,Foo Z,Lee Y,et al.A fully-integrated 71nWCMOS temperature sensor for low power wireless sensor nodes[J].IEEE Journal of Solid-State Circuits,2014,49(8):1682-1693
[6]Oh S,Lee Y,Wang J,et al.A dual-slope capacitance-to-digital converter integrated in an implantable pressure-sensing system[J].IEEE Journal of Solid-State Circuits,50(7):1581-1591.
[7]Sobieszczanski-Sobieski J,Chopra I.Multidisciplinary optimization of aeronautical systems[J].Journal of Aircraft,1990,27(12):977-978.
[8]Braun R,Gage P,Kroo I,et al.Implementation and performance issues in collaborative optimization[C]//The6th Symposium on Multidisciplinary Analysis and Optimization.Bellevue,WA,USA:AIAA,1996:4017.
[9]Alexandrov N M,Lewis R M.Comparative properties of collaborative optimization and other approaches to MDO[J/OL].[1999-07-01].https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19990064129.pdf
[10]Lau J H,Yue T G.Effects of TSVs(through-silicon vias)on thermal performances of 3D IC integration system-in-package(SiP)[J].Microelectronics Reliability,2012,52(11):2660-2669.
[11]Seybold J S.Introduction to RF propagation[M].Hoboken John Wiley&Sons,2005.
[12]Jones A D,Underwood C P.A thermal model for photovoltaic systems[J].Solar Energy,2001,70(4):349-359.
[13]Gualous H,Louahlia H,Gallay R.Supercapacitor characterization and thermal modelling with reversible and irreversible heat effect[J].IEEE Transactions on power electronics,2011,26(11):3402-3409.
[14]Versfeld N J,Vos J.Annoyance caused by sounds of wheeled and tracked vehicles[J].The Journal of the Acoustical Society of America,1997,101(5):2677-2685.
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