中国科学院机构知识库网格系统: 检索

Reliability-Aware and Deadline-Constrained Mobile Service Composition Over Opportunistic Networks 期刊论文 OAI收割
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING, 2021, 卷号: 18, 期号: 3, 页码: 1012-1025
作者: Peng, Qinglan; Xia, Yunni; Zhou, MengChu; Luo, Xin; Wang, Shu

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收藏 | 浏览/下载：81/0 | 提交时间：2021/08/20

Reliability Mobile handsets Mobile applications Device-to-device communication Cloud computing Service computing Quality of service Intelligent optimization Krill-Herd algorithm mobile computing mobile opportunistic network mobile service composition service reliability

A Reliability-Aware Joint Design Method of Application Mapping and Wavelength Assignment for WDM-Based Silicon Photonic Interconnects on Chip 期刊论文 OAI收割
IEEE ACCESS, 2020, 卷号: 8, 页码: 73457-73474
作者: Li, Hui; Liu, Feiyang; Gu, Huaxi; Chu, Zhuqin; Ye, Xiaochun

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收藏 | 浏览/下载：40/0 | 提交时间：2020/12/10

Wavelength assignment Reliability Photonics Crosstalk Optical device fabrication Silicon Optical crosstalk Silicon photonic interconnects on chip design method reliability application mapping wavelength assignment

Micro-electro-mechanical systems capacitive ultrasonic transducer with a higher electromechanical coupling coefficient 期刊论文 OAI收割
Micro & Nano Letters, 2015, 卷号: 10, 期号: 10, 页码: 4
作者: Miao, J(苗静); Shen, WJ(沈文江); He, CD; Xue, CY; Xiong, JJ

收藏 | 浏览/下载：84/0 | 提交时间：2015/12/31

silicon elemental semiconductors silicon-on-insulator wafer bonding electromechanical effects ultrasonic transducers capacitive transducers micromechanical devices micromachining vibrations membranes finite element analysis reliability capacitance electromechanical coupling coefficient capacitive micromachined ultrasonic transducer impedance matching propagation medium microelectromechanical system capacitive ultrasonic transducer silicon on insulator wafer bonding optimum geometric dimensions membrane mechanical vibration electrical characteristics finite-element analysis operation mode device safety device reliability equivalent stress operation-collapse voltage bottom electrodes glass substrate surface parallel parasitic capacitance Si SiO2

Design of controlling system in multi-function durability testing device for vehicle vacuum booster with brake master cylinder (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Mechanical and Electronic Engineering, ICMEE 2012, June 23, 2012 - June 24, 2012, Hefei, China
Hao X.; Zhang R.; Li X.; Wang M.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

The quality of vehicle vacuum booster with brake master cylinder is related to the safe of drivers and automobiles. The testing experiment must be executed strictly before leaving factory based on the national standards.The paper introduces the controlling system of multi-function durability testing device which is designed for doing durable testing experiments and Anti-lock braking system (ABS) performance experiments. The structure and theory of device is presented. The controlling system is illuminated in detail. To test the dynamic property this system was identified by a recursive BP neural network. According to the character of a great deal of sensors and actuators the high precision capabilities and reliability the distributed control mode (DCS) including the computer and PLC by RS-485 bus is utilized. The four channels testing experiments are achieved at the same time. The test data is directly memorized into the computer. The results of general endurance and ABS endurance testing experiments are shown to demonstrate the excellent performance of the testing device. 2012 Springer-Verlag Berlin Heidelberg.

Laser pulse coded signal frequency measuring device based on DSP and CPLD (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Laser Sensing and Imaging; and Biological and Medical Applications of Photonics Sensing and Imaging, May 24, 2011 - May 26, 2011, Beijing, China
作者: Zhang H.-B.; Wang T.-F.; Guo R.-H.; Li Y.; Li Y.

收藏 | 浏览/下载：37/0 | 提交时间：2013/03/25

Laser pulse code is an anti-jamming measures used in semi-active laser guided weapons. On account of the laser-guided signals adopting pulse coding mode and the weak signal processing it need complex calculations in the frequency measurement process according to the laser pulse code signal time correlation to meet the request in optoelectronic countermeasures in semi-active laser guided weapons. To ensure accurately completing frequency measurement in a short time it needed to carry out self-related process with the pulse arrival time series composed of pulse arrival time calculate the signal repetition period and then identify the letter type to achieve signal decoding from determining the time value number and rank number in a signal cycle by Using CPLD and DSP for signal processing chip designing a laser-guided signal frequency measurement in the pulse frequency measurement device improving the signal processing capability through the appropriate software algorithms. In this article we introduced the principle of frequency measurement of the device described the hardware components of the device the system works and software analyzed the impact of some system factors on the accuracy of the measurement. The experimental results indicated that this system improve the accuracy of the measurement under the premise of volume real-time anti-interference low power of the laser pulse frequency measuring device. The practicality of the design reliability has been demonstrated from the experimental point of view.

Small aircraft CAN bus signal acquisition equipment (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Chen C.-Q.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

Small aircraft often used RS485 bus. But with the complexity of the small aircraft's subsystems increase and the progress of field bus technology CAN bus systems in small aircraft use more and more widely. How to record real-time flight experiment data on the small aircraft's CAN bus and provide test data for reproducing the process of a small aircraft flying is very important. This paper presents a design method of signal acquisition device it can be used for small aircraft flying field experiment. 2010 IEEE. as the main chip with DSP2812 SJA1000 as CAN controller CTM1050 as the CAN transceiver CF card as storage media. Gives the diagram of its hardware and software design process. Combined with the background of a small aircraft testing the instrument for data acquisition when the ground experiments and flight progress. Experimental data show that the design of high reliability and CAN signals can effectively complete the record

The development and design of the chemiluminescence detection system based on DSP (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Zhu J.-W.

收藏 | 浏览/下载：19/0 | 提交时间：2013/03/25

In view of the examined method of the Luminol Chemiluminescence reagent proposes a design of such system that centers around TMS320F2812 adopts R6095P PMT as the sensitization device to measure light intensity and uses flash memory to store data. The experimental results show that the system has the features of reliability better maneuverability. This system has a wide use in biology and medicine field. 2010 IEEE.

A new driving method for LCoS with frame buffer pixels (EI CONFERENCE) 会议论文 OAI收割
ICO20: Display Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China
Song Y.; Ling Z.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

A new driving method for LCoS microdisplays with frame buffer pixels was developed here. The power dissipation of the LCoS microdisplays with frame buffer pixels is higher than that of the LCoS with DRAM-like pixels due to the twice samplings in LCoS with frame buffer pixels. In this paper an adiabatic charging method was used to the second sampling of the frame buffer pixels in order to reduce the power dissipated in the transistors. The power dissipation of the second sampling was calculated when the power sources of the step the ramp and the stair-step are used respectively. The conventional design adopted the step and contributed to high power and so result in more heat to deteriorate the device performance. The power dissipated in the transistors is almost zero if the ideal ramp source is used. The ramp can be the stair-step whose steps are infinity. The stair-step substitutes for the ramp due to easily generation and higher energy efficiency than the step. It can decrease the power dissipation of the LCoS panel and contributes to the heat reduction caused by power dissipation which can increase the microdisplay devices reliability. This method was developed based on the frame buffer pixel circuits which we proposed previously and can be applied to the others.

Low power frame buffer pixel circuits for LCoS microdisplays (EI CONFERENCE) 会议论文 OAI收割
13th International Display Workshops, IDW '06, December 6, 2006 - December 6, 2006, Otsu, Japan
Song Y.; Ling Z.

收藏 | 浏览/下载：14/0 | 提交时间：2013/03/25

In the frame buffer pixel circuits extra power was dissipated to implement the data transfer operation. Extra power dissipation can not only increase power but also decrease the device reliability. One method to deal with it at pixel level is needed. In this novel pixel circuit one PMOS transistor acts as a simple analog comparator in order to determine whether the discharging by comparing the current pixel voltage and the next frame data voltage.

Self Imaging technique for refocusing an aerospace camera (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
作者: Li W.; Li W.; Wang X.; Wang X.; Wang X.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

A novel auto-focusing technique using a self imaging approach is developed for an aerospace camera having large aperture and long focus. Its optical system consists of an emitting system receiving system and two penta-prisms. Emitting system has three parts: a light source beamsplitter and aim slit. The receiving system includes a field lens two separate lenses and CCD. Using two little penta-prisms instead of a large planar mirror makes the autofocus system simple and compact. CCD was used as photoelectric converting device. A defocused signal is acquired by measuring the change of the two slit self-images position imaged on the CCD. A simple and compact construction of the auto-focusing system was proposed. The algorithm to calculate the moving of the slit-self images position was analyzed in order to achieve subpixel position estimation. The results of the experiments show a 10m focusing precision. The system demonstrates high resolution easy adjustment and high reliability.