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2019 Research, Invention, and Innovation Congress (RI2C)最新文献

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Moisture Content Detection System by using Microwave Sensor 基于微波传感器的水分检测系统
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999899
S. Seewattanapon, Kittipong Tripetch, T. Lertwiriyaprapa, P. Akkaraekthalin
This paper presents microwave sensor system for moisture content measurement of paddy in hopper silo. The sensor utilizes near-field transmission measurement technique operating at 400-500-MHz implemented by using double dipole antenna fabricated on FR-4 substrate. This proposed system is installed at the bottom of the hopper silo to collect moisture content. The moister contents of paddy in hopper silo from 12%–30% are measured and characterized. The extracted moisture contents from the sensors in this paper show an agreement of higher than 93% as compared with the commercial instrument in rice mill. In the system testing, the detection system is installed besides the silo 50 ton. IoT system was used to collect the result such as moisture and temperature of the system.
介绍了一种用于料斗仓中稻谷含水率测量的微波传感器系统。该传感器采用近场传输测量技术,工作频率为400-500-MHz,采用FR-4基板上的双偶极子天线实现。该系统安装在料斗筒仓的底部,用于收集水分含量。对斗仓内稻谷12% ~ 30%的水分含量进行了测定和表征。从传感器中提取的水分含量与商用仪器在碾米机中的一致性高于93%。在系统测试中,除50吨筒仓外,还安装了检测系统。利用物联网系统采集系统的湿度、温度等结果。
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引用次数: 2
A Super-Resolution Image Reconstruction using Triangulation Interpolation in Feature Extraction for automatic sign language recognition 基于三角插值特征提取的超分辨率图像重建用于自动手语识别
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999891
Eakbodin Gedkhaw, M. Ketcham
This paper presents the performance of the super-resolution visualization by Triangular Interpolation algorithm to extract characteristic in sign language recognition. By compares performance from sign language image files in the experiment, the results showed that the generation of the super-resolution image by improved Triangulation Interpolation technique can provide the best results when evaluating image performance using PSNR which has a similarity value between the original image and the high-resolution image. These use the PSNR method for measuring image quality. The PSNR value of sign language image is 40.6081 or has more efficiency at 13.15 percent when compared with the SRCNN techniques which are closest to the original image. For measuring performance by SSIM, which is a structured similarity measurement techniques, Triangulation Interpolation method can get the results of generating the super-resolution image next below the SRCNN technique. But in case of the real-time process, Triangulation Interpolation methods can process faster.
介绍了基于三角插值算法的超分辨率可视化特征提取在手语识别中的应用。通过对比实验中两种手语图像文件的性能,结果表明,当使用原始图像与高分辨率图像具有相似值的PSNR来评价图像性能时,采用改进的三角插值技术生成的超分辨率图像可以提供最好的结果。它们使用PSNR方法来测量图像质量。与最接近原始图像的SRCNN技术相比,手语图像的PSNR值为40.6081,效率为13.15%。对于结构化相似度测量技术SSIM的测量性能,三角插值法可以获得仅次于SRCNN技术的超分辨率图像生成结果。但在实时处理的情况下,三角插值方法可以处理得更快。
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引用次数: 1
Model-Based Control of Permanent-Magnet Assisted Synchronous Reluctance Motors 永磁辅助同步磁阻电机的模型控制
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999926
S. Sriprang, B. Nahid-Mobarakeh, N. Takorabet, S. Pierfederici, Pongsiri Mungpom, P. Thounthong, N. Bizon, P. Kuman, Z. Shah
In this paper, nonlinear control is proposed to control PMa-SynRM. Initially, the mathematic models of PMa-SynRM are proved to show the differential flat property. Then, the controllers for torque and speed loop control are designed by using intelligent integral proportional (iPI). The proposed algorithm was digitally carried out using the MicroLab Box dSPACE. Based on the simulation and experimental results, the performance of the proposed control scheme is determined.
本文采用非线性控制方法对PMa-SynRM进行控制。首先证明了PMa-SynRM的数学模型具有微分平坦性。然后,采用智能积分比例(iPI)设计了转矩和速度环控制控制器。采用MicroLab Box dSPACE对该算法进行了数字仿真。根据仿真和实验结果,确定了所提控制方案的性能。
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引用次数: 0
Path Planning for Autonomous Mobile Robot Navigation with Evolutionary Particle Swarm Optimization 基于进化粒子群算法的自主移动机器人导航路径规划
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999920
Ittikon Thammachantuek, M. Ketcham
In this article, we proposed a new path planner called EPSO path planner. It based on evolutionary particle swarm optimization to generating the collision-free path for a mobile robot. The proposed algorithm finds the optimal path by performing random sampling on grid based environment. The efficiency of the proposed algorithm is demonstrated by simulation. The shortest path obtained was 11.45.
本文提出了一种新的路径规划器——EPSO路径规划器。基于进化粒子群算法生成移动机器人的无碰撞路径。该算法通过对网格环境进行随机采样来寻找最优路径。仿真结果验证了该算法的有效性。得到的最短路径为11.45。
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引用次数: 0
Decode-and-Forward Relaying Protocol with Optimal Degrees of Freedom for Proactively Selective Wireless Relay Networks 主动选择无线中继网络中最优自由度的译码转发中继协议
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999878
K. Woradit
This paper proposes a new decode-and-forward relaying protocol for wireless relay networks with relay selection to maximize the end-to-end instantaneous capacity. The main idea is to optimize the degrees of freedom, which may be time, frequency, or both time and frequency, and are unoptimized in the conventional decode-and-forward relaying protocol. Without loss of generality, we focus on optimizing the time of relaying phases, namely, the source-to-relay phase, and the relay-to-destination phase. We proved that the proposed protocol always yield greater end-to-end instantaneous capacity than or equal to that of the conventional protocol, and also proved that the proposed protocol sometimes select the relay node, different from the relay node selected by the conventional protocol. The conventional and the proposed protocols are compared in terms of ergodic capacity and outage probability by computer simulations. The comparisons show that the proposed relaying protocol performs better than the conventional relaying protocol in all signal-to-noise ratio regimes.
提出了一种基于中继选择的无线中继网络译码转发协议,以实现端到端瞬时容量的最大化。其主要思想是优化自由度,自由度可以是时间、频率,也可以是时间和频率兼有,这在传统的译码转发中继协议中是没有优化的。在不失一般性的前提下,我们着重于优化继电相位,即源到中继相位和中继到目的相位的时间。证明了所提出的协议总能产生大于或等于传统协议的端到端瞬时容量,并证明了所提出的协议有时会选择中继节点,而不是传统协议所选择的中继节点。通过计算机仿真,比较了传统协议和新协议的遍历容量和中断概率。结果表明,该中继协议在所有信噪比条件下都优于传统中继协议。
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引用次数: 0
High Step-Up DC-DC Push-Pull Resonant Based on low Cost half-wave Class-D Rectifier 基于低成本半波d类整流器的高升压DC-DC推挽谐振
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999911
C. Ekkaravarodome, A. Bilsalam, P. Tantiviwattanawongsa, P. Thounthong
This paper presents high step-up DC-DC push-pull resonant based on low cost half-wave class-D rectifier, it provides high of voltage for a 12 VDc from battery via isolated transformer and half-wave class-D rectifier. The main switches of push-pull and diode half-wave rectifier operated under can be achieve to ZCS condition. The benefit propose of this technique is used self-leakage inductance for ZCS of both power switch and leakage inductance used designing resonant tank secondary side. A prototype high voltage conversion ratio push-pull resonant converter was built and operated at a 250 kHz fixed switching frequency, a rate 360 VDc output voltage and efficiency eques to 92 % at the 190 W maximum output full load. The objective analysis the effect of parasitic junction capacitance of half-wave rectifier which has significant include of this purpose is to operating point of resonant tank and voltage. In this paper introduced verify implement prototype. The circuit proposed and analysis was verified by experimental result. From a result is presented in agreement with the theoretical analysis and experimental work.
本文提出了一种基于低成本半波d类整流器的高升压DC-DC推挽谐振,它通过隔离变压器和半波d类整流器为蓄电池提供12vdc的高电压。推挽开关和二极管半波整流器的主开关在ZCS状态下工作。该技术的优点是在电源开关的ZCS中采用自漏电感,在设计谐振槽二次侧采用漏电感。建立了一个高电压转换比推挽谐振变换器的原型,其工作频率为250 kHz,固定开关频率为360 VDc,最大输出满负载为190 W时效率为92%。客观分析了半波整流器寄生结电容对谐振槽工作点和电压的影响,其中寄生结电容对半波整流器寄生结电容的影响具有重要意义。文中介绍了验证实现原型。实验结果验证了所提出的电路和分析的正确性。所得结果与理论分析和实验工作相吻合。
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引用次数: 1
Development of A Reconfigurable Spherical Robot III 一种可重构球形机器人的研制
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999962
Supaphon Kamon, Natthaphon Bunathuek, Pudit Laksanacharoen
The development of reconfigurable spherical robot III is presented in this paper. The researchers develop the reconfigurable spherical robot III with the ability to transform from a spherical mode into a three-legged walking mode using a linear motor. A linear motor which is kept inside the reconfigurable spherical robot III can be extended and shortened the upper hemisphere. The robot keeps three legs inside the lower hemisphere and uses three legs to stand and move on the ground. Each leg is modeled with three degrees of freedom. This paper presents the abilities of the reconfigurable spherical robot III. Transformation, walking, turning left, turning right, crossing the barrier.
本文介绍了可重构球形机器人III的研制情况。研究人员开发了可重构的球形机器人III,该机器人能够使用直线电机从球形模式转换为三足行走模式。安装在可重构球形机器人III内部的直线电机可以对其上半球进行扩展和缩短。机器人的下半球内有三条腿,用三条腿在地面上站立和移动。每条腿都有三个自由度。本文介绍了可重构球形机器人III的性能。变形,行走,左转,右转,穿越障碍。
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引用次数: 2
Comparative Study of Si IGBT and SiC MOSFET in Optimal Operation Class-E Inverter for Domestic Induction Cooker 家用电磁炉最佳运行e类逆变器中Si IGBT与SiC MOSFET的比较研究
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999967
Satit Mangkalajarn, C. Ekkaravarodome, Surat Sukanna, A. Bilsalam, Kamon Jirasereeamongkul, K. Higuchi
A comparative study of switching characteristics of silicon (Si) insulated-gate bipolar transistor (IGBT) and silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (MOSFET) with the similar power rating is presented. The 1.2 kW/30 kHz domestic induction cooker prototype based on the optimal operation with zero-voltage and zero-derivative switching (ZVDS) Class-E inverter is built for evaluating the 1.2-kV/41-A Si IGBT and the 1.2-kV/ 40-A SiC MOSFET performance. The experimental results show that the Si IGBT has lower switching speed and much higher loss when compared with the SiC MOSFET. Moreover, the switching loss of the Si IGBT will increase significantly for high temperature operation, while the switching loss of the SiC MOSFET is almost constant for different of operation temperature. The experimental results show that the system efficiency can be increased from 96.5% to 98.7% when using the SiC MOSFET. Hence, making them suitable for lower losses and higher temperature applications.
比较研究了额定功率相近的硅(Si)绝缘栅双极晶体管(IGBT)和碳化硅(SiC)金属氧化物半导体场效应晶体管(MOSFET)的开关特性。建立了基于零电压零导数开关(ZVDS) e类逆变器优化工作的1.2 kW/30 kHz家用电磁炉样机,对1.2 kv /41 a Si IGBT和1.2 kv / 40 a SiC MOSFET性能进行了评估。实验结果表明,与SiC MOSFET相比,Si IGBT具有更低的开关速度和更高的损耗。此外,Si IGBT的开关损耗在高温下会显著增加,而SiC MOSFET的开关损耗在不同的工作温度下几乎是恒定的。实验结果表明,使用SiC MOSFET可将系统效率从96.5%提高到98.7%。因此,使它们适用于低损耗和高温应用。
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引用次数: 1
Development Process of Student Seats on Modified Pickup for School Transportation 学校交通改进型皮卡学生座椅的开发过程
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999900
Wisit Wiputgasemsuk, S. Koetniyom, C. Glunrawd
Modified pickup trucks with bench seats installed is a generic transport for students in Thailand. This kind of transportation has a high risk of causing severe injury if an accident occurs. The student seats on the modified pickup trucks are then developed for safer school transport. An alternative development process of automotive seats on pickup trucks is proposed by adaptation from the traditional process. The concerns in each step of development processes are proposed with details. The selected method from conceptual and detailed designs with analysis as well as the actual test assessment are described.
改装后的装有长凳座位的皮卡车是泰国学生的通用交通工具。这种运输方式一旦发生事故,造成严重伤害的风险很高。改装后的皮卡车上的学生座椅将被开发成更安全的学校交通工具。在传统工艺的基础上,提出了一种小货车座椅的替代开发工艺。详细地提出了开发过程中每个步骤的关注点。介绍了从概念设计、详细设计、分析和实际试验评估中选择的方法。
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引用次数: 1
D-STATCOM based Voltage Compensator for a new Micro Hydro Power Generation Scheme Supplying Remote Areas 基于D-STATCOM的偏远地区微型水力发电电压补偿器
Pub Date : 2019-12-01 DOI: 10.1109/RI2C48728.2019.8999921
P. Singh, S. Gao
This paper presents a new micro hydro power generation scheme using capacitor excited asynchronous generator and back to back converter. The scheme also considers variable turbine which rotates the generator at variable speed to generate variable AC voltage. The use of AC-DC-AC converter helps to convert the variable AC to DC and then to constant AC voltage and frequency. The design of control algorithms of the converter is based on the decoupled d-q control theory. The performance of the proposed scheme is analysed under resistive and inductive loads. The proposed model also has a D-STATCOM for regulating the output voltage at constant peak voltage during loading. The control principle of the D-STATCOM is based on a modified SRF theory and it has the ability to compensate unbalanced load current and load harmonics apart from regulating load voltage. The simulation is carried out with the help of MATLAB/Simulink and the power quality issues are also studied. The results show satisfactory performance of the proposed scheme.
提出了一种采用电容励磁异步发电机和背靠背变换器的微型水力发电新方案。该方案还考虑了可变涡轮,使发电机以变速旋转产生可变交流电压。使用AC-DC-AC变换器有助于将可变的交流转换为直流,然后转换为恒定的交流电压和频率。变换器的控制算法设计基于解耦的d-q控制理论。分析了该方案在电阻性和感性负载下的性能。该模型还具有一个D-STATCOM,用于在加载过程中以恒定峰值电压调节输出电压。D-STATCOM的控制原理基于改进的SRF理论,除了调节负载电压外,还具有补偿负载不平衡电流和负载谐波的能力。利用MATLAB/Simulink进行了仿真,并对电能质量问题进行了研究。结果表明,该方案具有良好的性能。
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引用次数: 1
期刊
2019 Research, Invention, and Innovation Congress (RI2C)
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