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| 1 | A triboelectric/electromagnetic hybrid generator for efficient wind energy collection and power supply for electronic devices显示文摘Harvesting energy from ambient environment has been considered as a promising strategy for driving portable electronic devices in a sustainable way. A wind driven triboelectric-electromagnetic hybrid nanogenerator has been fabricated to convert wind energy into electricity. It is composed of an electromagnetic generator(EMG) and a triboelectric nanogenerator(TENG) with the output power of 35 and 0.32 mW, respectively when the wind speed is 5 m/s. Generally, TENG shows a low current output with a high voltage output characteristic, on the contrary the EMG shows a high current output and a low voltage output. This hybrid nanogenerator overcomes these problems and exhibits comprehensive and efficient performance on scavenging energy.Moreover, in view of the output performance and charging ability of the hybrid nanogenerator, it shows high stability, making it suitable for charging capacitors or batteries and driving portable electronics sustainably. A new structure of integrated TENG and EMG was designed to harvest wind energy, which shows potential applications in portable and small device power supply system, especially in the areas of remote mountains, deserts, islands, etc., as emergency power supply. | XU GuanPing ZHENG YouBin FENG YanGe MA ShaoChen LUO Ning FENG Min CHEN ShouGang WANG DaoAi | 2021 | Science China(Technological Sciences)2021，64，9： | 2 |
| 2 | Effects of surface physical sorption in characteristic of coated quartz-crystal humidity sensor 显示文摘 | DONG Yonggui FENG Guanping | 1995 | Sensors and Actuators B1995，25，13： | 1 |
| 3 | Investigation of acoustic load sensitivity of quartz crystal resonator and related sensors 显示文摘 | DONG Yonggui FENG Guanping | 2000 | Sensors and Actuators B2000，66，： | 1 |
| 4 | A novel instrument based upon extremely high Q-value SAWR array and neural network显示文摘 | Dai Enguang Feng Guanping | 2000 | Sensors and Actuators B: Chemical2000，66，123： | 1 |
| 5 | A novel instrument based upon extremely high Q-value surface acoustic wave resonator array and neural network显示文摘 | Dai Enguang Feng Guanping | 2000 | Sensors and Acouators B2000，66，： | 1 |
| 6 | State of Sensing Technology Development in China显示文摘 | Yonggui Dong | 2001 | Tsinghua University Beijing China2001，2001，： | 1 |
| 7 | Effect of Fluid Electrical Property Changes on Surface Transverse Wave Sensors显示文摘A fluid sensor based on the surface transverse wave (STW) delay line on ST-cut quartz has been developed and tested in a large number of fluids with different viscosity and permittivity levels.Influence of fluid mechanical and electrical properties on the sensor's response has been determined and the sensor's performance has been compared with a bulk acoustic wave (BAW) viscosity sensor.The result shows that the viscosity sensitivity of the developed STW sensor represented by the signal to noise ratio is lower than that of a 5 MHz BAW sensor.Applications of the sensor in detecting the quality of industrial fluids are discussed. | Chao Zhang Wenyan Wang Yonggui Dong Yan Liu Guanping Feng | 2006 | 稀有金属材料与工程2006，35，A03： | 0 |
| 8 | 45nm PCRAM对GST CMP的挑战和解决方法显示文摘本文报导GST(Ge2Sb2Te5)CMP工艺的挑战和解决方法。通过适当的抛光垫选择、工艺方案和清洗步骤优化解决GST的污染问题。实现最小氧化物损失的关键因素是抛光液的稀释比例和H2O2浓度的优化和控制过抛光。微微秒激光acoustics型测量工具证明适用于GST CMP工艺的在线和离线监控。 | Li Jiang Feng Chen PuLei Zhu Mingqi Li Hongtao Liu Guanping Wu Ming Zhong AoDong He | 2013 | 功能材料与器件学报2013，19，4： | 0 |
| 9 | Potato planter test bed based on capacitive precision seed-monitoring and miss-seeding compensation system显示文摘Potato seed-monitoring is the premise of its precise planting.But,for anti-dust,anti-vibration performance and durability,the existing photoelectric monitoring schemes have obvious congenital defects.So,a capacitive precision seed-monitoring idea was proposed in this study.Its theoretical basis is that the variation of dielectric between the capacitor plates will inevitably induce the fluctuation of the detected capacitance value.Therefore,the construction of a space capacitance sensor,and the acquisition of the net capacitance fluctuation caused by the seed spoon passing through the space area of the capacitor plates,were the core focuses of this study.Firstly,the system theory and working principle were introduced.Next,a space capacitance sensor that meets all the requirements was analyzed and constructed.And then,its spatial arrangement was described in detail,and most important of all,the technology roadmap of the net capacitance fluctuation measurement was put forward.For this purpose,MAX038 and GD32F407 were selected to work together to measure the capacitance.In this way,the top value of the space capacitance when a spoon passed through the space capacitance sensor was detected,at the same time,the corresponding grating encoder information was also recorded,so,the net capacitance fluctuation of this process was calculated.Based on this result,normal-seeding,miss-seeding,and multi-seeding were identified.More subtly,with the cooperation of the grating encoder,the position of the seed-metering monitoring point was configured freely.Just for miss-seeding,a predictive impact compensation concept was suggested.Based on the theories above,the software core links related to seed-monitoring and compensation control were analyzed.Finally,a potato planter test bed based on this study was built.Taking the Long-7 cutting potato as test samples,it was found that,the capacitance measurement error was no higher than 0.6%;no misjudgment on miss-seeding was found,however,for normal-seeding and multi-seeding,there was a small amount of identification of the opposite kind was found,but not more than 1.0%and 1.5%,respectively.Because of the flexibility of the seed-metering monitoring point layout,the predictive impact compensation can also be arranged according to actual needs,and the mechanism of the impact compensation system is simple and direct,which makes it cheap and fast.Nevertheless,a lower compensating seed potato tank filling rate is conducive to the average compensation success rate at an acceptable level.This research has laid the engineering foundation for the industrial application of potato non-photoelectric seed-metering monitoring and miss-seeding compensation. | Hua Zhang Wuyun Zhao Wei Sun Guanping Wang Xiaolong Liu Bin Feng Linrong Shi Yan Liu Hongling Li | 2022 | International Journal of Agricultural and Biological Engineering2022，15，6： | 0 |
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