The proceedings contain 39 papers. The topics discussed include: plasmon-based SMSMS optical fiber sensor structure for creatinine detection in aquaculture industry;detection of streptavidin using liquid crystal based...
ISBN:
(纸本)9781510657083
The proceedings contain 39 papers. The topics discussed include: plasmon-based SMSMS optical fiber sensor structure for creatinine detection in aquaculture industry;detection of streptavidin using liquid crystal based whispering gallery mode microbubble;all fiber human heart-rate sensor based on the evanescent field disturbance in no-core fiber;optofluidic laser immunosensor for rapid and ultrasensitive dual biomarker detection;the design of miniaturized in-situ shadow photographic imaging system for plankton research;2D pressure sensing map based on distributed sensing approach for biomedical application;chip-based microwave-photonic lidar for high-speed ranging and velocimetry;sensitivity dependence of single nanoparticle mass detection based on mechanical oscillations in optical microcavities;and analysis of factors affecting the accuracy of the rotation angle measurement using nanostructured metasurfaces.
The work is devoted to the analysis of the accuracy characteristics of rotation angle sensors using angular scales from nanostructured metasurfaces. The principle of their operation is based on the dependence of the f...
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ISBN:
(纸本)9781510657090;9781510657083
The work is devoted to the analysis of the accuracy characteristics of rotation angle sensors using angular scales from nanostructured metasurfaces. The principle of their operation is based on the dependence of the frequency response of metasurfaces on the orientation of the incident light polarization plane. The influence of the noise characteristic of angle sensors on the measurement result is considered. It is shown that for the sensors considered in the work, it might be on the order of units of arc seconds. The influence on the accuracy characteristics of misalignments of the angular scale and thermal effects that the sensor may experience during operation is analyzed. Recommendations to reduce the influence of parasitic effects and further improve the accuracy characteristics are given.
Fiber Bragg grating (FBG) sensor for marine exploration has gradually attracted people's attention because of its natural characteristics of low investment and high expansion capability. However, it is well known ...
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ISBN:
(纸本)9781510657090;9781510657083
Fiber Bragg grating (FBG) sensor for marine exploration has gradually attracted people's attention because of its natural characteristics of low investment and high expansion capability. However, it is well known that FBG is not only sensitive to temperature, but also affected by strain, pressure, vibration, refractive index etc. The cross-sensitivity of FBG results in large measurement error for fiber temperature measurement. As an important error source of optical fiber temperature sensing, strain has attracted much attention of researchers. In order to eliminate the interference of strain on FBG temperature measurement, in this paper, we propose a FBG sensor for ocean applications. Two fiber Bragg gratings with different central wavelengths are cascaded to realize the decoupling of temperature and strain sensing. Experimental results show that the temperature sensitivity of the proposed sensor can reach to 9.49 pm/degrees C in the range from -5 degrees C to 35 degrees C.
The automation of vehicles is progressing through several automation levels, with the goal of reaching full autonomy, i.e. level 5, which involves no steering wheel, brakes, pedals, or windshield. This is achieved by ...
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ISBN:
(纸本)9798331516246;9798331516239
The automation of vehicles is progressing through several automation levels, with the goal of reaching full autonomy, i.e. level 5, which involves no steering wheel, brakes, pedals, or windshield. This is achieved by the vehicle taking on an increasing number of autonomous decision-making tasks under the guidance of smart control systems that are instilled with Artificial Intelligence (AI) and equipped with advancedsensor and actuator technologies. Major vehicle companies are competing to build the most talented driver, i.e. AI-agent. In this report, how the intelligence of Self-Driving Vehicles (SDVs) is being built by the automotive industry for the efficient deployment of handover wheels is analysed and applications of machine intelligence for SDVs are implemented through video capturing using Deep Learning (DL). The results show that i) the use of DL techniques as well as reinforcement learning (RL) - Deep RL approaches - can contribute to the intelligence of SDVs significantly and ii) SDVs, equipped with advanced mechatronics systems, can be fully autonomous with the level-5 automation as they are trained appropriately with proper datasets.
Nowadays, Cyber-Physical systems (CPS), particularly drones, play a pivotal role in environmental research. Scientists depend on these platforms to monitor various sensor data and ensure comprehensive data archiving. ...
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ISBN:
(纸本)9798350380279;9798350380262
Nowadays, Cyber-Physical systems (CPS), particularly drones, play a pivotal role in environmental research. Scientists depend on these platforms to monitor various sensor data and ensure comprehensive data archiving. However, despite their advantages, researchers encounter several challenges, including communication limitations and the complexity of setting up systems tailored to their needs. To address these issues, we propose MoDD, a model-driven data collection framework based on a customized publish/subscribe model. MoDD simplifies the development and configuration of data collection systems. It offers scientists a solution that meets their specific needs, allowing them to focus on high-level requirements while the framework manages the underlying complexities. We demonstrate the effectiveness of MoDD through practical evaluations on an actual Unmanned Surface Vehicle. Additionally, results show a 79% reduction in throughput (drone to base station link) compared to existing publish/subscribe systems.
Ensuring the reliability, safety, and efficiency of railway systems is increasingly critical in global transportation networks. This paper addresses the necessity for advanced monitoring systems by introducing a multi...
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ISBN:
(纸本)9798350363524;9798350363517
Ensuring the reliability, safety, and efficiency of railway systems is increasingly critical in global transportation networks. This paper addresses the necessity for advanced monitoring systems by introducing a multivariate energy-efficient wireless sensor node designed for proactive maintenance in rail applications.
As one of the cleanest energy sources in the 21st century, the development of hydrogen energy has attracted the attention of all countries in the world, so the monitoring of hydrogen leakage has become a current resea...
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ISBN:
(纸本)9781510657090;9781510657083
As one of the cleanest energy sources in the 21st century, the development of hydrogen energy has attracted the attention of all countries in the world, so the monitoring of hydrogen leakage has become a current research focus. This study demonstrates a novel hydrogen sensor that combines a planar polymer grating with a Pd/Ni hydrogen-sensitive material that takes advantage of the hydrogen-absorbing expansion properties of Pd to cause the central wavelength drift of Planar Polymer Bragg Grating (PPBG) by strain transformation. The experimental results show when the hydrogen concentration is 0.3%, 0.6% and 1%, the wavelength shift of the sensor is 50 pm, 85 pm and 110 pm respectively, and the response time is approximately 30 seconds. This hydrogen sensor has the advantages of high sensitivity, low cost and compact structure, leading to great potential in industrial applications.
In this paper, a novel distributed Raman distributed temperature sensing system based on pulse compression technique using hybrid modulation method is proposed. The structure of the new system and the corresponding mo...
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ISBN:
(纸本)9781510657090;9781510657083
In this paper, a novel distributed Raman distributed temperature sensing system based on pulse compression technique using hybrid modulation method is proposed. The structure of the new system and the corresponding modulation and demodulation methods are described. The system performance is verified by experiments. This scheme solves the inherent problem of mutual restrictions between spatial resolution and temperature resolution existed in conventional Raman distributed temperature sensing systems. Compared with other modulation schemes that do not use coding, the hybrid modulation method using in-pulse sweeping and inter-pulse coding can alleviate the transient effect, and reduce the peak power to avoid the influence of nonlinear effect, which improve the signal-to-noise ratio, and obtain a better performance.
The correlation between reflected light intensity and hydrogen concentration is the basis of the end-face type hydrogen sensor with WO3 coating. However, the changes of optical properties of WO3 under different hydrog...
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ISBN:
(纸本)9781510657090;9781510657083
The correlation between reflected light intensity and hydrogen concentration is the basis of the end-face type hydrogen sensor with WO3 coating. However, the changes of optical properties of WO3 under different hydrogen concentrations have not been fully investigated, and its hydrogen sensitivity mechanism is still unclear, which restricts the improvement and optimization of hydrogen sensing performance. Therefore, the relationship between hydrogen concentration and Refractive Index (RI) of WO3 is established in this paper to explore the hydrogen sensitive mechanism. The experimental results show that the RI of WO3 changes when hydrogen is introduced, and the RI varies under different hydrogen concentration. Since there is a certain mathematical relationship between the RI value and the reflectivity of the films, the RI changes measured by ellipsometer is further verified by the intensity-tracing experiments results. Hence, we can clarify that the hydrogen sensitivity mechanism of WO3 is related to its RI changes under different hydrogen concentration, which will provide a basis for the further research and applications.
SiO2 cladding YAG:Yb crystal core fiber fabricated by the modified rod-in- tube method was demonstrated as a remote sensor for partial discharge faults (PD). The spectra of the crystal fiber and PD fault standard sour...
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ISBN:
(纸本)9781510657090;9781510657083
SiO2 cladding YAG:Yb crystal core fiber fabricated by the modified rod-in- tube method was demonstrated as a remote sensor for partial discharge faults (PD). The spectra of the crystal fiber and PD fault standard source were measured. When the applied voltage of the PD source is 36 kV, the detection pulse intensity of the sensor decays exponentially with the change of the distance from the PD source to the sensing probe (SSD). Its decay trend in the range of 0-25 cm conforms to the Beer-Lambert law. When the fixed SSD is 7 cm and the applied voltage range of the PD source varies from 35 to 39 kV, the pulse frequency detected by the sensor has a good linear relationship with the applied voltage (R-2 = 0.99279). The experimental results indicate that the crystal optical fiber sensor can realize the remote sensing of PD monitoring.
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