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160 results on '"Wang, Huixing"'

24. Monocular 3-D Object Detection Based on Depth-Guided Local Convolution for Smart Payment in D2D Systems

Author

Li, Jun, Song, Wei, Gao, Yongbin, Wang, Huixing, Yan, Yier, Huang, Bo, Zhang, Jun, Wang, Wei, Li, Jun, Song, Wei, Gao, Yongbin, Wang, Huixing, Yan, Yier, Huang, Bo, Zhang, Jun, and Wang, Wei

Abstract

3D object detection from mobile phones in device to device (D2D) system provides a new smart payment tool for the next-generation of fintech, which is more flexible and efficient than the traditional barcode. In this paper, we propose a monoc-ular 3D object detection method based on depth guided local convolution. The method combines the information of RGB image mode and depth mode by using a convolution kernel through depth image, and works on a single RGB image locally. According to the multiscale input information, the convolution kernel is adaptively adjusted to capture the target objects of different scales, so as to improve the performance of 3D object detection. In addition, we use soft-NMS algorithm instead of traditional NMS to select the best prediction box. In order to further improve the accuracy of 3D object detection, the depth estimation network and 3D object detection network are jointly trained in this method to make the two networks constrain each other and achieve the best performance.

Published
2023

32. Experimental and numerical study on thermal protection by silica aerogel based phase change composite

Author

Yongjun Xu, Wang Huixing, Huibin Yin, Dai Liling, Jian Liu, Cai Zhuodi, Hong Li, and Gao Shiyuan

Subjects
Heat transfer rate, Work (thermodynamics), Materials science, 020209 energy, Composite number, Aerogel, 02 engineering and technology, Heat preservation, chemistry.chemical_compound, General Energy, 020401 chemical engineering, chemistry, Vaccine cold chain, Thermal conductivity, Heat transfer, Thermal, 0202 electrical engineering, electronic engineering, information engineering, Coupling (piping), Polystyrene, lcsh:Electrical engineering. Electronics. Nuclear engineering, 0204 chemical engineering, Composite material, Layer (electronics), lcsh:TK1-9971, Phase change material
Abstract

In this work, an incubator is developed for vaccine cold chain transport based on paraffin/SiO2 aerogel composite with polystyrene board for coupling packaging. The morphology and thermal property of PCM was characterized. A combined numerical and experimental study has been conducted to study the multi-level gradient heat transfer behavior. The coupling between the outer insulation board and the inner layer PCM can achieve great synergistic gain, it is reflected in the fact that maintain time increased by 99 times compared to the condition with only insulation board. The optimal double layer board configuration is optimized as XPS/PCM and the thickness ratio is determined as 1:3. The lifting rate of the holding time presented an increasing trend with the overall size of the incubator increasing, providing alternative basis for the cold chain transport configuration under different requirements.

Published
2020

38. Hydrogen gas alleviates sepsis-induced neuroinflammation and cognitive impairment through regulation of DNMT1 and DNMT3a-mediated BDNF promoter IV methylation in mice

Author

Yu, Mingdong, primary, Qin, Chao, additional, Li, Pei, additional, Zhang, Yingli, additional, Wang, Ying, additional, Zhang, Jing, additional, Li, Dedong, additional, Wang, Huixing, additional, Lu, Yuechun, additional, Xie, Keliang, additional, Yu, Yang, additional, and Yu, Yonghao, additional

Published
2021
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39. Monocular 3D Object Detection Based on Depth Guided Local Convolution for Smart Payment in D2D systems

Author

Li, Jun, Song, Wei, Gao, Yongbin, Wang, Huixing, Yan, Yier, Huang, Bo, Zhang, Jun, Wang, Wei, Li, Jun, Song, Wei, Gao, Yongbin, Wang, Huixing, Yan, Yier, Huang, Bo, Zhang, Jun, and Wang, Wei

Abstract

3D object detection from mobile phones in device to device (D2D) system provides a new smart payment tool for the next-generation of fintech, which is more flexible and efficient than the traditional barcode. In this paper, we propose a monoc-ular 3D object detection method based on depth guided local convolution. The method combines the information of RGB image mode and depth mode by using a convolution kernel through depth image, and works on a single RGB image locally. According to the multiscale input information, the convolution kernel is adaptively adjusted to capture the target objects of different scales, so as to improve the performance of 3D object detection. In addition, we use soft-NMS algorithm instead of traditional NMS to select the best prediction box. In order to further improve the accuracy of 3D object detection, the depth estimation network and 3D object detection network are jointly trained in this method to make the two networks constrain each other and achieve the best performance.

Published
2021

43. Effect of Local Constraint on Driving Torque of Driving Mechanism for Half-rotating Wing

Author

Wang Huixing, Wang Xiaoyi, Qiu Han, Chen Fuqiang, Qiu Zhizhen, and Shan Jianhua

Subjects
Engineering (General). Civil engineering (General), TA1-2040
Abstract

Half-rotating wing (HRW) is a new kind of flapping wing system with rotating-type flapping instead of oscillating-type flapping. For the complex mechanical transmission and high weight which is not suitable for flight of traditional half-rotating mechanism (HRM).The simplified HRM with local constraint was proposed as the driving mechanism of HRW in this paper. The performing process and characteristics of local constraint was further given. According to contact state between moving components, the performing process of local constraint was divided into two stages. To analyze the influence of local constraint on the driving torque exerted in the crank of driving mechanism, the model of driving torque under different stages were respectively established. Based on the model, the change curve of driving torque was obtained through simulation by MATLAB, which showed that local constraint had little influence on driving torque. The results could provide guidance for the choice of motor of HRW and optimization of dynamics.

Published
2016
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50. Use of magnetorheological shock absorber for impact loading mitigation with individually controllable coils

Author

Li Yancheng, Zheng Jiajia, Ouyang Qing, Zhang Guang, Wang Jiong, Li Zhaochun, and Wang Huixing

Subjects
Shock absorber, Materials science, Recoil, Acoustics, Magnetorheological fluid, Response time, Current (fluid), Shock (mechanics), Magnetic field, Compensation (engineering)
Abstract

This book chapter presents comprehensive investigations on the use of magnetorheological (MR) shock absorber to mitigate the effect of impact loading, with emphasis on the recoil system. A physical model of the field gun is established and a long-stroke MR recoil absorber with four-stage parallel electromagnetic coils is designed to apply separate current respectively and generate variable magnetic field distributions in the annular flow channel. The response time and the compensation method are investigated to facilitate the application. Based on the dynamic analysis and firing stability condition during the process of shock, the ideal recoil force-stroke profiles of MR absorber at different limiting firing angles are obtained. The experimental studies are carried out on the impact test rig under different combinations of current loading: conventional unified control mode, separate control mode and timing control mode.

Published
2019

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