Vongchumyen, Charoen

Preferred name

Alternative Name

Vongchumyen, C.

Main Affiliation

School of Engineering

charoen.vo@kmitl.ac.th

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The design of the domain name system with workload distribution system anycast DNS type for UniNet in Thailand
(2019-07-01)
Laomuad, Sattra
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Chansuttirangkool, Manutsiri
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Lekdee, Kriangsak
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Soysouvanh, Saysamone
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Vongchumyen, Charoen
This paper proposes the design of recursive Anycast DNS service system using as a replacement for the original unicast DNS service system that the UniNet Network is active and having problems supporting the volume of client traffic that has a large number of educational institutions. In order to increase the efficiency of providing services to clients of educational institutions. The designing from setting up the server host in various node and the designing the server connected to a suitable network for routing protocol has been proposed, including designing an emergency backup system that regards to compatibility with current network systems and the use of the original unicast DNS system to be useful. As a result of testing the designed system, it was found that the Query time of the new system was 2 times less than that of the original system for query IPv4, and 5 times less than that of the original system for query IPv6. Anycast DNS system that was installed can support the amount of DNS Query more 15 times than the original unicast DNS system.
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An atom/molecule/DNA probing and transportation using dynamic optical tweezers via a wavelength router
(2011-03-01)
Vongchumyen, C.
;
Tasakorn, M.
;
Mitatha, S.
;
Yupapin, P. P.
A dark soliton pulse beam that has potential applications in the probing and transport of atoms or molecules as an optical tweezers is demonstrated. The trapped pulse beam is formed in the gap between a BP signal at 1500.00 nm and Stokes signal at 1500.09 nm, which has peak powers of -12 dBm. The generated beam is seen to be stable with no fluctuations over a test period of 10 min, which is important to ensure that the transported atom/molecule is not lost in the link media, therefore, the dynamic optical tweezers are now plausible. The theoretical background of the trapped atom/molecule is also analyzed and described in details. The atomic/molecular network via a wavelength router is also described. © 2010 Elsevier GmbH All rights reserved.
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Enhanced WDM using a Gaussian pulse within a nano-waveguide
(2010-05-05)
Youplao, P.
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Vongchumyen, C.
;
Mitatha, S.
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Yupapin, P. P.
The new optical communication bandwidths (wavelength bands) using a Gaussian pulse propagating within a nonlinear microring resonator system is proposed. The Results obtained have shown that more available wavelength bands from the different center wavelengths can be generated, which can be used to form new dense wavelength division multiplexing bands. The novelty of the work is that the expansion of communication bands, especially, when the center wavelengths at 400 and 1,400 nm can be obtained by using a common laser pulse, whereas the amplified and non-dispersive light source can be formed. ©2010 IEEE.
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Home appliances-controlled platform with homekit application
(2019-07-01)
Vongchumyen, Charoen
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Torthitithum, Sarayuth
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Khamsopa, Jirachaya
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Watanachaturaporn, Pakorn
Home appliances-controlled platform with HomeKit application is a platform that allows users to control general appliances via HomeKit, which is an application from Apple on any device running iOS10 or later. The platform is the communication medium between application and appliances. The appliances do not need to be manufactured by Apple since they are expensive and have to put an effort in case the customer want to buy it. The platform is capable of receiving and transferring data to a HomeKit application for data processing, then transmits signal back to control the operation of the appliances. Within the platform, there is a section that acts as a communication server for the HomeKit application which is like a direct Apple server. In addition to receiving and sending data from the HomeKit application, the platform also has an automatic control that is controlled by the reading sensor contained in each platform comparing the threshold values, user defined. Each platform has different sensors based on their operations and can control only one type of appliance because each type of control uses different signal, the control must be unique, matching the type of appliances and the form of command in different manufacturers.
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Frequency Choices and the Improvement of Signal Using Reassigned Joint Time-Frequency Analysis for Closed Range Detection
(2025-01-01)
Pinyatanabat, Thipparat
;
Vongchumyen, Charoen
This research aims to observe and improve the received signal resolution that reflected from moving object which, in this experiment, is pedestrian who would be moving around radar within close ranges (2 meters, 15 meters, and 30 meters apart from stationary monostatic radar). Since simulation is a better choice to observe the changes of signal with variety ranges of frequency with less uncontrollable variables thus MATLAB is the chosen tool to run on the experiment in order to observe the micro-doppler effect in each scenario. Considering real-life limitation, authors focus on off-the-shelf frequency range that everyone could access; 2.4 GHz and 5 GHz the frequency range of WIFI. The observation results show that if we want to decrease the frequency from 24 GHz to these household WIFI and still not decrease its information too much to unable to recognize human movement, 5 GHz is a better choice comparing to 2.4 GHz if the application aims to detect the minimum range of moving target indoor with resolution range is more or equal to 1 meter.
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Image recorder server with IP camera and pocket PC
(2011-05-02)
Boonma, N.
;
Sangthong, A.
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Mitatha, S.
;
Vongchumyen, C.
We propose a new system for image recorder server from IP camera. The system consists of 2 parts, Server and viewer. Server is software running on PC with ability to capture image from IP camera and save to disk like an image server. The second part is the viewer. A user be able to monitor and view the saved image on the server via a web-based application from everywhere with password protection. Live and history image can be show to user to check the status of area or investigate the history event. Further more. The server can connect to IP camera to collect image or connect a web cam directly to the server for cost reduction. Finally, the user can view the image by using browser on the PC or Windows mobile phone.
1
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Portable Signboard Size Measurement for Tax Collection
(2026-01-01)
Viriyakul, Vachara
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Noisundod, Siwakorn
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Chayawattana, Faikaew
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Chokkhun, Pacharapol
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Tienngam, Krittipoom
Challenges in the collection of signboard taxes largely emanate from access-related problems and human errors, which contribute to inefficiencies in the tax valuation processes. However, a question of concern, which is normally overlooked, is how to provide a systematic and portable solution which combines precision and convenience for the field officers. This paper addresses this gap by developing a portable device based on computer vision and machine learning approaches to automate signboard measurement. Through the integration of state-of-the-art technologies, this device not only increases accuracy but also brings a level of operational simplicity that has not been explored before in this area. The results showed that the device was able to identify and calculate the area of the signboards correctly.
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Golf shaft fitting calibration system
(2012-01-01)
Jaknowan, J.
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Mitatha, S.
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Vongchumyen, C.
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Yupapin, P. P.
The calibration system was developed for golf shaft fitting to the club or blade. The system provided the best line and angle of golf shaft to fit into the club slot. This yielded the best controlling for the impact point between the club and the golf ball, including obtained the minimal swaying of golf shaft after the club hit to the ball. The proposed system was consisted of two components: the hardest line tuning and the best line calibration tool. The hardest line tuning was applied to search for the line that indicated the most strongest of the shaft, which contributed the minimal bend within the given certain forced pressure. The best line calibration tool was employed to determine the best angle for fitting the shaft to the golf club which reflected the minimal swaying while hitting to the ball. In this manner, the golfers could control the desired range and direction of the ball. © 2010 Published by Elsevier Ltd.
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Dark-soliton multiplexing system for high-capacity and -security communication within a wavelength router
(2010-05-01)
Vongchumyen, Charoen
;
Kulsirirat, Kathawut
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Mitatha, Somsak
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Yupapin, Preecha P.
We propose a novel system for generating multiplexed dark-soliton pulses using multiple light sources via an optical multiplexer, whereby dark solitons with different center wavelengths can be generated. The multiplexed signals can be transmitted into the communication link and filtered by using an optical add-drop filter. By using suitable simulation parameters, we have shown that dark solitons with different center wavelengths can in fact be obtained. In application, the communication capacity can be increased by using the multiplexed dark solitons; moreover, the transmission signals can be secured by utilizing the behavior of dark solitons. A free spectrum range (FSR) 2.5 nm and an amplified power of 30 W of dark solitons with wavelength 1.60 μm can be achieved. Channel spacing of the communication signals within a wavelength router can be provided by using a suitable FSR, which can be managed by using crosstalk effect analysis. © 2010 Society of Photo-Optical Instrumentation.
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Teleoperation of humanoid robot by motion capturing using KINECT
(2018-08-13)
Vongchumyen, Charoen
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Bamrung, Chitrin
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Kamintra, Wasita
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Watcharapupong, Akkradach
In this research, present a control ROBOBUILDER by using human gesture and detect motion by technology Motion controller in the part of the KINECT and convert signal into the process. In this study aim to developed control the ROBOBUILDER using hardware, software and networks to work within the system. By using a robot resembling a human-based Digital Servo to operate and use an algorithm to find the angle to control Servo Motor include using Arduino added in WI-FI module to send commands to control. Robot in addition to the convenience of controlling a robot to a more natural and as an alternative to control such a robot to use in a dangerous situation to humans, such as a nuclear submarine or space can also be used or for fun for users of alleges.
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Vongchumyen, Charoen

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