Purahong, Boonchana
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Preferred name
Purahong, Boonchana
Alternative Name
Purahong, B.
Main Affiliation
Email
boonchana.pu@kmitl.ac.th
16 results
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Item type:Publication, Learning the basics of microcontroller starter kit boards AVR (eSnack)(2013-12-01)This paper presents the development of a low-cost experiment board used AVR microcontroller for in class at KMITL to starter board. Caused of this family chipset are easy for development, be convenience and more database. There is the main reason for developed starter board to be more compacted and more simplified. The board microcontroller edit by C language, power supplied by computer USB port. Input of this experiment result can be detected output signal from other sources which it showed result to buzzer and 8 bit LED display. All described of this paper installed on this starter board size 2.3×6.3cm expense of this board around 30 US$ and we were called eSnack board. © 2013 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Identity checking system by visible light(2014-01-01); ; Dumrong, JirattawutA new identity checking system by visible light can fulfill some limitations of QRCode and RFID technology wherewith this system can check further distance. This paper is a model to be applied to other areas. In this system, the communication between LED Blinking and camera consists of transmitter and receiver. Transmitter is a microcontroller to control LED for blinking pattern one pattern for one identity of object and save in database. Receiver consists of camera to detect LED blinking by image processing. When detecting LED blinking receive code for identity of object then get code to check identity with database. This system can be applied to various such as security, advertising, identify system, and etc. © 2014 IEEE. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Implementation of ECG portable device for real-time signal monitoring(2017-11-24); ; ; Aoyama, H.In this paper presents a system for heart rate signal analysis in ECG (Electrocardiography) format using STM32f7 board. Electrode is used for recording the signal with stick on body in lead 2 orientations. Signal processing method are used upper average, slope and interval checking algorithm to process ECG signal in real-time. In experiment, to acquire a frequency of heart beat and display ECG signal and heart rate on STM32f7 board compare with wearable device that result have error rate less than 1%. This system is portable to use and sufficient battery for recording signal to analyze and monitor throughout the day. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Biometrics based on facial landmark with application in person identification(2019-01-01); ; Pitavirooj, ChuchartThis paper presents a novel technique for face recognition based on facial landmarks extracted automatically. Our landmarks are those associated with eyes mouth and nose. To extract facial landmarks, we first use Haar cascade algorithm to detect the face ROI following by Haar cascade algorithm for the eye, mouth and nose ROI determination. To find landmark associated with the eye, we convert eye ROI image to binary image using thresholding algorithm. To exclude the eyebrow region, we apply horizontal radon transform. The project data will then be used to separate the eyebrow region from the eye region. To detect eye-related landmark, vertical radon transform is applied. With the vertical projection data, the outermost pixel can be identified and the associated eye landmark can be determined. The similar technique can then be used to identify landmarks associated with the nose and mouth area. Given the correspond landmarks on the reference face and the query face, geometric transformation can be determined using normal equation bases on minimized mean squared error. The two faces are then aligned. To provide the quantitative measurement, the two aligned face are converted to edge image using canny edge algorithm. The distance map error between the two aligned edge facial images is then used to identify the query face. The purposed algorithm for person identification was tested on the face database resulting in a very high accuracy. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Identity checking system by light blinking id-beacon using image sensor(2016-01-01)In this paper, a new method for the ID checking system was proposed by using the Visible Light Communication (VLC). The proposed method uses an image sensor of webcam camera and smartphone that can use fulfill some limitations of QRCode and RFID technology. In the experiment, ID the system can identify identity codes transmitted in 1-50 meters in daytime and night to find the processing time for the first time to detect LED Blinking. As the result, the performance of ID checking can use webcam camera to identify objects the maximum distance in daytime and night but smartphone can identify in short distance at night. Comparing a performance for application in various systems between webcam camera and smartphone image sensor. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Design of linear phase filter by using q-Bernstein polynomial(2018-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Dynamic set point feedback control using steady state detection(2016-01-24); There are various of feedback control model such as PID, Fuzzy control. The purpose of feedback control model is to find best way to process output or feedback signal to be the input signal for control the system according to set point or input demand. Normally the set point has been given from outside of system or be fixed to constant it means there are other subsystem assign set point. The paper is research about how to change the set point using only feedback value for convenient purpose. We research about processing of feedback value to know when the system wants to change the set point. We designed algorithm to analyse feedback value about steady state for decide changing set point and implement this method in the real hardware by PID speed control using encoder and microcontroller for run our algorithm. At last we record statistic from microcontroller and analyses the result. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Rectangular slot antenna with Asymmetrical conductor strip for bandwidth enhancement coverage UWB standard(2014-01-01); This paper presents the bandwidth enhancement of rectangular slot antenna fed by microstrip line on the flexible Mylar Polyester film substrate. Asymmetrical conductor strip is designed and inserted in the rectangular slot to extend the bandwidth from 3.06 GHz to 7.2 GHz frequency range. Besides, the rectangular conductor at the end of the feeding microstrip line is introduced for increasing the bandwidth at high frequency up to 12.32 GHz. This improved antenna to cover standard frequency range of UWB (3.1 GHz – 10.6 GHz). Finally, as to reject the frequency band of IEEE 802.11a (5.15 GHz – 5.35 GHz), the line strip at the side of tuning stub is added. In this case, the band-notched frequency from 5.15GHz to 5.38 GHz can be easily obtained. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Internet based crossover robot remote control competition among Asian countries - Development of practice based innovative education methodology, Phase V(2012-10-23) - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Internet based crossover robot remote control competition among Asian countries: Development of practice based innovative education methodology, phase III(2010-11-29)