Guangxi Key Laboratory of Automatic Detection Technology and Instrument

Guilin, China

Guangxi Key Laboratory of Automatic Detection Technology and Instrument

Guilin, China
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Xu C.,Guilin University of Electronic Technology | Xu C.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument | Ling J.,Hefei University | Hu C.,Guilin University of Electronic Technology | Hu C.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | Year: 2016

A new method using dynamic bandwidth division multiplexing is proposed to study the test planning and scheduling collaborative optimization of three dimensional Network-on-Chip (3D NoC); in the test, the TAM with fixed bandwidth is assigned to IP cores dynamically, which allows test data of multiple cores to share the same physical TAM and to be transferred at the same time and in parallel, solves the mismatch problem between IP core test data transmission bandwidth and TAM bandwidth, and realizes the maximization of IP core parallel test. Multiple population cloud evolution algorithm is designed to conduct the scheduling of the bandwidth allocation result in TAM, implement crossover mutation among elite groups to improve the variety, and collaboratively conduct the test planning and scheduling optimization to obtain the shortest scheduling time. Taking the ITC'02 benchmark circuit as experiment object, simulation verification experiment was conducted; experiment result demonstrates that the proposed dynamic bandwidth division multiplexing test strategy improves the bandwidth utilization rate, effectively reduces test time and improves test efficiency, while meeting the power and TAM bandwidth constraint conditions. © 2016, Science Press. All right reserved.


Xu C.,Guilin University of Electronic Technology | Xu C.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument | Li K.,Guilin University of Electronic Technology | Li K.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument
Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument | Year: 2017

To improve the testing efficiency of the IP core in three-dimensional network-on-chip(3D NoC), research on test scheduling of the 3D NoC under the multiple constraints is conducted. A new method taking the TSV allocation and the IP core test data assignment as two optimization variables respectively, and co-evolved them by the discrete particle swarm optimization algorithm is proposed to minimize the test time and fully utilize the limited TSVs under the multiple restrictions such as the limited number of TSVs, power and the constant bandwidth. To enhance the global searching capacity and increase the diversity of population to refine the stagnation phenomenon, strategies of introducing the global sub-optimal extreme's influence on the update of particle and adjusting the parameters by self-adaption are designed. Taking ITC'02 test benchmark as the experiment object, simulation results demonstrate that the proposed method can effectively accomplish the placement optimization of TSVs and the allocation of the communication resource under the multiple constraints, and therefore the test time is shortened and the TSVs' utilization is improved. © 2017, Science Press. All right reserved.


Hu F.,Guilin University of Electronic Technology | Hu F.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument | Zhang L.,Guilin University of Electronic Technology | Zhang L.,Guangxi Key Laboratory of Automatic Detection Technology and Instrument | And 7 more authors.
Optical and Quantum Electronics | Year: 2015

Based on the finite-integration-technology method, we calculate the high and low frequency resonant peaks of the split-ring-resonators (SRRs) which served as a terahertz sensor. An equivalent three-SRRs model is introduced to understand the SRR structure at the high frequency resonant absorption peak. At the same time, an equivalent circuit is set up to calculate the high frequency resonant peak. After that, we theoretically study the sensitivity of these two peaks. The results suggest that both of these two resonant peaks show redshift when the permittivity of surrounding medium increase, and the high frequency peak is more sensitive to this permittivity variation than the low one. The SRR sample is fabricated using a surface micromachining process and used to identify gasoline of 93# and 97#. The experiment results show that the redshift of the high frequency resonant peak is larger than that of the low one, and it is in good agreement with theory analysis. This study suggests that the SRR is a good sensor to identify the product oil, and its high frequency resonant peak is more sensitive to the variation of the permittivity than the low one. © 2015 Springer Science+Business Media New York


Chen D.,Northwestern Polytechnical University | Chen D.,Xian University of Posts and Telecommunications | Liu S.-B.,Northwestern Polytechnical University | Yin S.-M.,Guilin University of Electronic Technology | And 3 more authors.
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | Year: 2016

Considering that the response signal of light addressable potentiometric sensor (LAPS) is quite week and the traditional method for extraction of fundamental component of frequency domain is easily impacted by signal drift and stochastic noise, a kind of two-step signal processing method based on the mean square root of component of frequency domain and Kalman filtering was proposed. Based on the theoretical model of devices of light addressable potentiometric sensor, the equivalent circuit model was established; the expression of output signal was deduced, and the causes of drifting and noise as well as inhibition methods were analyzed. Through tests, the solutes with different pH values were detected, and the photocurrent signal outputted by systems was collected. The mean square roots of breadth value of spectral line of fundamental component, second harmonic component and third harmonic component in the frequency domain after Fourier transformation were calculated. Then, the Kalman filtering was implemented for characteristic curve of normalized current-bias (I-V). The experimental results indicate that the two-step signal processing method based on the mean square root of component of frequency domain and Kalman filtering makes the mean square error (MSE) of testing result reduced by 97%, and the influences of signal drift and stochastic noise on testing result are obviously decreased compared to the simple method to extraction of fundamental component. © 2016, Science Press. All right reserved.

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