A5100404162- Acoustic Wave Resonator Technologies
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Mechanical and Optical Resonators
- Autonomous Vehicle Technology and Safety
- Advanced Chemical Sensor Technologies
- Video Surveillance and Tracking Methods
- Ultrasonics and Acoustic Wave Propagation
- Advanced MEMS and NEMS Technologies
- Power Systems and Technologies
- Power Systems and Renewable Energy
- High-Voltage Power Transmission Systems
- Advanced Fiber Optic Sensors
- Transition Metal Oxide Nanomaterials
- Network Time Synchronization Technologies
- Magnetic Properties and Applications
- Photocathodes and Microchannel Plates
- Silicon Carbide Semiconductor Technologies
- Analog and Mixed-Signal Circuit Design
- HVDC Systems and Fault Protection
- Smart Grid and Power Systems
- Advanced Neural Network Applications
- Advancements in PLL and VCO Technologies
- Advanced Vision and Imaging
- Power Systems Fault Detection
Guizhou Electric Power Design and Research Institute
2023
China Southern Power Grid (China)
2023
Wuhu Institute of Technology
2023
Xidian University
2023
Shanghai Jiao Tong University
2019-2022
Chinese Academy of Sciences
2021
University of Chinese Academy of Sciences
2021
Technical Institute of Physics and Chemistry
2021
China Building Materials Academy
2020
Yunnan University
2015
This letter presents a highly sensitive flexible strain sensor based on surface acoustic wave (SAW) working principle. The SAW employs the piezoelectric single crystal PMN-PT thick film, which significantly improves sensitivity of to 1243.49 Hz/με. Meanwhile, fabricated by chemical and mechanical polishing process can realize wide measurement range from -1000 +1000 με. repeatability device is also evaluated under 0 900 testing results demonstrate that this developed an excellent candidate...
In this work, we developed a high-performance SAW humidity sensor based on SnO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> /MoS nanocomposite as the sensitive layer while PMN-PT piezoelectric layer. The device was fabricated via thinning bulk and standard photolithography ion beam etching process. After that, assembled by drop-casting hydrothermal synthetic composite device. exploit of sensing result in high performance because its...
NiO hollow microspheres synthesized through a SiO<sub>2</sub> spheres template-assisted approach show very good gas response towards volatile organic compound vapors.
Target detection and distance estimation for autonomous driving have been making remarkable strides in recent years. In driving, target mainly refers to the identification of vehicles, pedestrians, traffic signs, etc. Nowadays, technology has gradually matured, especially with emergence Faster R-CNN YOLO, which greatly improved accuracy efficiency detection. Not only detect objects, we want know more about spatial information between vehicle however, complexity road conditions challenges...
In this paper, piezoelectric single crystal PMN-PT was processed by chemical and mechanical polishing method to form a surface acoustic wave (SAW) device for strain measurement. A wide measurement range high sensitivity of developed sensor were achieved, where the 1000 με achieved 1160.46 Hz/με. At same time, stability SAW sensors good. This small size (6.58 mm × 4.19 60 μm) could be used structural calibration, machine inspection, aerospace detector in future.
The brake of the wind driven generator requires a gentle process. Which decreases damage to equipment. In this paper, flexible which can be realized braking is described. application on are analyzed and explained. Brake MCU (Microprogrammed Control Unit) as core. By principle gently, has been achieved by smooth braking. Based pulse width modulation throttle valve, safe reliable force with hydraulic devices electronic components. controls relay achieve PWM (pulse modulation), monitor...
Using an ultrafast laser to excite 2D nanostructures, and coherent extreme ultraviolet light detect the resulting acoustic response, we observe characterize shortest-wavelength (35 nm) surface waves date.
Due to the great performance of connecting distributed power supply and DC load flexibly efficiently, flexible dc distribution system has been a trend for future grids. However, electronic devices are difficult withstand short-circuit impulse current caused by line-to-line faults. In this case, it is necessary identify fault area within short time accurately. The influence on high-frequency impedance equivalent model converters investigated. On basis, directional pilot protection based...
With the large-scale power electronic devices connected to grid, harmonic problem has become an important concern for system. The sector impedance or circular boundary in traditional system will increase range of AC impedance, polygonal new choice construction, but method construction is not clear. In this paper, methods different are studied, and influence on evaluation compared, based resonant calculation proposed. proposed paper can be used more accurately reduce capacity filter devices,...
This paper presents a low jitter multiplying delay-locked loop (MDLL) with current-controlled delay line (DL) for high-precision time-to-digital converter (TDC). A multiphase clock uniform distribution generated from the is applied directly to TDC. To achieve better performance output phase splitting, voltage-to-current circuit (VTC) introduced extend locking frequency range and enhance tuning linearity of MDLL. Additionally, decrease noise in locked state, an improved charge pump (CP)...
Microchannel plate (MCP) is an important compact signal multiplier. The dynamic range of MCP the key index influencing detection quality high flux, energy and wide output linearity signals, but limited on bulk resistance Therefore, problem resistance-dependent transition in these devices needs to further continues be investigated. In this paper, lead silicate glass microchannel plates three different bismuth contents (0at%, 1at%, 2at%) were present. decreased exponentially (from 6000MΩ...
At present, lane line detection is still one of the unsolved problems in field computer vision. The realization automatic driving perception technology cannot lack detection. However, most algorithms proposed at present meet accuracy and real-time performance same time.[1] as a newly polynomial regression algorithm, has reached an excellent level terms speed. This paper further explores on basis this proposes method that does not share Top-y. Experiments show also very effective for