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您的检索式：作者名="Cai Lingxiang"
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| 1 | Optics‑guided Robotic System for Dental Implant Surgery显示文摘At present,dental implant surgery mainly relies on the clinical experience of the doctor and the assistance of preoperative medical imaging.However,there are some problems in dental implant surgery,such as narrow space,sight obstruction,inaccurate positioning,and high requirements of doctors’proficiency.Therefore,a dental implant robot system(DIRS)guided by optical navigation is developed in this study,with an x-shaped tool and an irregular pentagonal tracer are designed for spatial registration and needle tip positioning strategy respectively.The coordinate system of each unit in DIRS is unified through system calibration,spatial registration,and needle tip positioning strategy.Then the surgical path is planned on the computed tomography(CT)images in the navigation software before operation.The automatic positioning method and the auxiliary positioning method can be used in the operation to achieve accurate positioning and assist doctors to complete the operation.The errors of spatial registration,needle tip positioning strategy,and the overall accuracy of the system were evaluated respectively,and the results showed that they all met the needs of clinical surgery.This study preliminarily verified the feasibility of the precise positioning method for dental surgery robots and provided certain ideas for subsequent related research. | Biao Yan Wenlong Zhang Lijing Cai Lingxiang Zheng Kaiyang Bao Yuming Rao Lin Yang Weitao Ye Peifeng Guan Wei Yang Jiang Li Rongqian Yang | 2022 | Chinese Journal of Mechanical Engineering2022，35，3： | 1 |
| 2 | High gain multiband planar spiral slot rectenna with dipole arms显示文摘A novel low profile multiband rectenna was proposed for harvesting the 2 nd generation(2 G), the 3 rd generation(3 G), the 4 th generation(4 G), wireless local area networks(WLANs) etc., electromagnetic wave energy. The proposed rectenna consists of a novel multiband antenna and a rectifier. The multiband antenna includes a radiating element on one side of a single layer dielectric substrate and a feeding spiral balun on the other side of the substrate. A conductive via is connected between the balun and the radiating element. In the radiating element, a deformed dipole structure is connected with an equiangular spiral slot structure and is used to generate a low frequency radiation around 900 MHz. The multiband antenna can work simultaneously at 0.869 GHz^0.948 GHz, 1.432 GHz^2.173 GHz, and 2.273 GHz^2.465 GHz with its peak gains of 7.1 dBi at 903 MHz, 4.1 dBi at 1 800 MHz, 5.2 dBi at 2 430 MHz. The radio frequency to direct current(RF-to-DC) conversion efficiencies of the rectifier are 58%~62% at these three frequencies for an input power of 0 dBm. The overall measurement results validate that the rectenna suits for energy harvesting and exhibits approximate maximum efficiencies of 58% at 0.9 GHz, 56% at 1.8 GHz, and 55% at 2.4 GHz with a low incident power density of 8 μW/cm^2. | Tan Lirong Zhao Feng Cai Lingxiang Sun Youming Poo Yin | 2019 | The Journal of China Universities of Posts and Telecommunications2019，26，3： | 0 |
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