Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559814
Thipamas Phakaew, T. Pongthavornkamol, P. Akkaraekthalin, S. Chalermwisutkul
In this work, an X-band array antenna is proposed for a radar system aimed to detect obstacles in front of a locomotive. Such a radar system can assist the train driver in forward collision avoidance in scenarios with compromised frontal visibility. The antenna is designed on an ARLON25N substrate with a thickness of 1.6 mm. According to the specification, the antenna has a maximum gain larger than 16 dBi and an operating frequency from 9.4 to 9.7 GHz. The array elements are simple patch elements which form a 8×8 2-dimensional array with an appropriate spacing between the elements in order to minimize the side lobes. The feeding structure is studied including end- and center-feed in order to satisfy the required specifications. The input of the feed is matched to 50 Ohm to minimize the return loss. The X-band array antenna will be installed inside the locomotive right behind the frontal wind shield to protect the radar module from the weather conditions outside the locomotive. The proposed system will contribute to enhanced safety of railway transportation as well as road users at railway crossings without barriers.
{"title":"An X-Band Array Antenna for Forward Looking Radar in Collision Avoidance Systems of Locomotives","authors":"Thipamas Phakaew, T. Pongthavornkamol, P. Akkaraekthalin, S. Chalermwisutkul","doi":"10.1109/RI2C51727.2021.9559814","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559814","url":null,"abstract":"In this work, an X-band array antenna is proposed for a radar system aimed to detect obstacles in front of a locomotive. Such a radar system can assist the train driver in forward collision avoidance in scenarios with compromised frontal visibility. The antenna is designed on an ARLON25N substrate with a thickness of 1.6 mm. According to the specification, the antenna has a maximum gain larger than 16 dBi and an operating frequency from 9.4 to 9.7 GHz. The array elements are simple patch elements which form a 8×8 2-dimensional array with an appropriate spacing between the elements in order to minimize the side lobes. The feeding structure is studied including end- and center-feed in order to satisfy the required specifications. The input of the feed is matched to 50 Ohm to minimize the return loss. The X-band array antenna will be installed inside the locomotive right behind the frontal wind shield to protect the radar module from the weather conditions outside the locomotive. The proposed system will contribute to enhanced safety of railway transportation as well as road users at railway crossings without barriers.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132644324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559802
Supanat Apipatsakul, N. Fuengwarodsakul, M. Masomtob
In a conventional passive balancing system for the Li-Ion battery, the drained current is determined by the installed bleeding resistors, which are fixed by a constant resistor. The fixed drained current may not support the increased demand for bleeding power when the Li-Ion cells age. An advanced cell balancing circuit should possess the ability to adjust the drained current to support the increased unbalanced SoC among the aged battery cells. The pulse width modulation (PWM) switching technique can be applied to control the duty cycle of the bleeding switch and, consequently, to regulate the averaged bleeding current. The bleeding current can be controlled by adjusting the duty cycle of the PWM switching from 0 to 100 percent of the maximum drained power. The passive balancing circuit controlled by PWM technique will be typically designed with a relatively high maximum bleeding current (low bleeding resistance) in order to obtain the highest flexibility in controlling the bleeding current. Under the requirements of high bleeding current and the ability to control the bleeding current using the PWM technique, this paper discusses technical challenges and design consideration of the passive balancing circuit, i.e. operating frequency and balancing MOSFET switch behavior. As an output of this paper, a design guideline for implementing the passive balancing circuit with the capability of bleeding current adjustment for the Li-Ion battery is suggested.
{"title":"Design Guidelines of Passive Balancing Circuit for Li-Ion Battery for Bleeding Current Adjustment Using PWM Technique","authors":"Supanat Apipatsakul, N. Fuengwarodsakul, M. Masomtob","doi":"10.1109/RI2C51727.2021.9559802","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559802","url":null,"abstract":"In a conventional passive balancing system for the Li-Ion battery, the drained current is determined by the installed bleeding resistors, which are fixed by a constant resistor. The fixed drained current may not support the increased demand for bleeding power when the Li-Ion cells age. An advanced cell balancing circuit should possess the ability to adjust the drained current to support the increased unbalanced SoC among the aged battery cells. The pulse width modulation (PWM) switching technique can be applied to control the duty cycle of the bleeding switch and, consequently, to regulate the averaged bleeding current. The bleeding current can be controlled by adjusting the duty cycle of the PWM switching from 0 to 100 percent of the maximum drained power. The passive balancing circuit controlled by PWM technique will be typically designed with a relatively high maximum bleeding current (low bleeding resistance) in order to obtain the highest flexibility in controlling the bleeding current. Under the requirements of high bleeding current and the ability to control the bleeding current using the PWM technique, this paper discusses technical challenges and design consideration of the passive balancing circuit, i.e. operating frequency and balancing MOSFET switch behavior. As an output of this paper, a design guideline for implementing the passive balancing circuit with the capability of bleeding current adjustment for the Li-Ion battery is suggested.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114228682","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559803
Sukanya Chudpooti, Patchadaporn Sangpet, Tanaporn Pechrkool, S. Chalermwisutkul, P. Akkaraekthalin
This paper presents the non-destructive liquid-mixture sensor for glucose concentration characterization using the dual-mushroom resonator technique. The resonator is designed by using Jerusalem patch for reducing the size of a resonator, operating at 5.76 GHz with a total size of 10 × 30 mm2 (0.2λ0 × 0.2λ0). In the experimental measurement setup, the Teflon tube channel is placed on the top of the resonator patch. The liquid under test is filled into the Teflon tube using the syringe. The volume of the liquid under test is 100 µl. The liquid under test is a controlled temperature of 25 degrees Celcius. Six solutions, e.g., DI-water, 0.04 g/mL, 0.08 g/mL, 0.12 g/mL, 0.16 g/mL and 0.20 g/mL of D-glucose in DI-water, are selected for calibrating the proposed sensor. From the measurement results, the proposed sensor can classify the difference between D-glucose in the DI-water in each of 0.04 g/mL. The sensitivity of D-glucose solution in terms of reflection coefficient, S11, is 18.74 dB/g/mL. The extracted equation shows the regression coefficient better than 0.995 based on the 2nd order polynomial curve fitting technique. The non-destructive microwave liquid-mixture of D-glucose and DI-water offers advantage points, e.g., low-cost, long lifetime, no-additional chemical process, etc.
{"title":"Non-Destructive Liquid-Mixture Sensor Using Dual-Mushroom Resonator for Glucose Concentration Characterization","authors":"Sukanya Chudpooti, Patchadaporn Sangpet, Tanaporn Pechrkool, S. Chalermwisutkul, P. Akkaraekthalin","doi":"10.1109/RI2C51727.2021.9559803","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559803","url":null,"abstract":"This paper presents the non-destructive liquid-mixture sensor for glucose concentration characterization using the dual-mushroom resonator technique. The resonator is designed by using Jerusalem patch for reducing the size of a resonator, operating at 5.76 GHz with a total size of 10 × 30 mm2 (0.2λ0 × 0.2λ0). In the experimental measurement setup, the Teflon tube channel is placed on the top of the resonator patch. The liquid under test is filled into the Teflon tube using the syringe. The volume of the liquid under test is 100 µl. The liquid under test is a controlled temperature of 25 degrees Celcius. Six solutions, e.g., DI-water, 0.04 g/mL, 0.08 g/mL, 0.12 g/mL, 0.16 g/mL and 0.20 g/mL of D-glucose in DI-water, are selected for calibrating the proposed sensor. From the measurement results, the proposed sensor can classify the difference between D-glucose in the DI-water in each of 0.04 g/mL. The sensitivity of D-glucose solution in terms of reflection coefficient, S11, is 18.74 dB/g/mL. The extracted equation shows the regression coefficient better than 0.995 based on the 2nd order polynomial curve fitting technique. The non-destructive microwave liquid-mixture of D-glucose and DI-water offers advantage points, e.g., low-cost, long lifetime, no-additional chemical process, etc.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124235541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559823
K. Klinieam, P. Noiying
In this study, we aim to measure the face recognition algorithm robustness of CiRA CORE software and identify a group of TE student with face recognition using the deep learning technique from CiRA CORE software. The one-shot problem and similar-looking face problem are robust performance tests of CiRA CORE. Thus, the number and properties images of a dataset are considered as the robustness of the CiRA CORE software. Identify TE student experiment; three detected faces that are the maximum number of faces in one frame is a condition of the experiment. The results of identify TE student experiment demonstrate that the system gains ninety percent accuracy for the camouflage test by wearing a cap and achieves one hundred percent accuracy for other camouflage problems and identify TE student test. The result of robustness and identify TE student experiment confirms face recognition algorithm CiRA CORE software is effective and robust for identify TE student system.
{"title":"Deep Learning Technique for a Identify TE Student System by Face Recognition","authors":"K. Klinieam, P. Noiying","doi":"10.1109/RI2C51727.2021.9559823","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559823","url":null,"abstract":"In this study, we aim to measure the face recognition algorithm robustness of CiRA CORE software and identify a group of TE student with face recognition using the deep learning technique from CiRA CORE software. The one-shot problem and similar-looking face problem are robust performance tests of CiRA CORE. Thus, the number and properties images of a dataset are considered as the robustness of the CiRA CORE software. Identify TE student experiment; three detected faces that are the maximum number of faces in one frame is a condition of the experiment. The results of identify TE student experiment demonstrate that the system gains ninety percent accuracy for the camouflage test by wearing a cap and achieves one hundred percent accuracy for other camouflage problems and identify TE student test. The result of robustness and identify TE student experiment confirms face recognition algorithm CiRA CORE software is effective and robust for identify TE student system.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123170732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559775
Kanitta Hinon
The managements such as learning management. If students would like to proceed learning efficiently and accomplished objective on target. It required better planning. And another important part of learning management is learning process arrangement and choosing the proper tools for the learning environment. Therefore, the 4D learning management is developed. To provide students to have the ability to choose and be able to manage their learning process (information management). In this case, a free platform is used for learning management. This 4D learning management has objectives aimed at (1) Develop a 4D learning management model with free platform to improve usage and management skills of information for undergraduate students. (2) To study the effectiveness of using 4D learning management for undergraduate students. (3) To evaluate the model usage and management skills of students. In this research, the selection will take a sample of registered 25 students and use the multistage sample method. The tools for this research are Assessments and questionnaires form and student’s performance evaluation along with basic static to analyze data.
{"title":"The Development of 4D Model for Learning Management with Free Platform to Encourage The ICT Literacy Skills of Undergraduates","authors":"Kanitta Hinon","doi":"10.1109/RI2C51727.2021.9559775","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559775","url":null,"abstract":"The managements such as learning management. If students would like to proceed learning efficiently and accomplished objective on target. It required better planning. And another important part of learning management is learning process arrangement and choosing the proper tools for the learning environment. Therefore, the 4D learning management is developed. To provide students to have the ability to choose and be able to manage their learning process (information management). In this case, a free platform is used for learning management. This 4D learning management has objectives aimed at (1) Develop a 4D learning management model with free platform to improve usage and management skills of information for undergraduate students. (2) To study the effectiveness of using 4D learning management for undergraduate students. (3) To evaluate the model usage and management skills of students. In this research, the selection will take a sample of registered 25 students and use the multistage sample method. The tools for this research are Assessments and questionnaires form and student’s performance evaluation along with basic static to analyze data.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122480649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559806
Giorgos Savvides, Nattapong Duangrit, N. Chudpooti, P. Akkaraekthalin, I. Robertson, N. Somjit
This paper presents, a novel design of a Hollow Substrate Integrated Waveguide (HSIW), that is built by using both Subtractive and Additive Manufacturing technologies. Specifically, it utilizes Polymer jetting method to print an Acrylonitrile butadiene styrene (ABS) dielectric substrate and a water laser cutter system to produce smooth copper sheets as the top and bottom enclosures of the HSIW. Also, the fabrication process is utilizing mechanical through hole plating of commercially available prefabricated vias, eliminating the cost and complexity of performing vias fabrication and metallization process as in other SIW designs. The proposed waveguide covers 5G new radio frequency bands, specifically from 21 GHz to 31 GHz. It has a simulated and a measured attenuation constant of 0.636 Np/m and 1.56 Np/m respectively, for the whole operating frequency range and is among the lowest reported values to date. The proposed HSIW of this paper, can be compared with other state- of-the-art designs in terms of compactness, manufacturing cost and performance. The designed HSIW can be integrated with other planar circuits and can be used to build functional devices such as antennas or filters for 5G, robotics and IoT applications.
{"title":"Novel Hollow Substrate Integrated Waveguide for 5G and Robotic Applications","authors":"Giorgos Savvides, Nattapong Duangrit, N. Chudpooti, P. Akkaraekthalin, I. Robertson, N. Somjit","doi":"10.1109/RI2C51727.2021.9559806","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559806","url":null,"abstract":"This paper presents, a novel design of a Hollow Substrate Integrated Waveguide (HSIW), that is built by using both Subtractive and Additive Manufacturing technologies. Specifically, it utilizes Polymer jetting method to print an Acrylonitrile butadiene styrene (ABS) dielectric substrate and a water laser cutter system to produce smooth copper sheets as the top and bottom enclosures of the HSIW. Also, the fabrication process is utilizing mechanical through hole plating of commercially available prefabricated vias, eliminating the cost and complexity of performing vias fabrication and metallization process as in other SIW designs. The proposed waveguide covers 5G new radio frequency bands, specifically from 21 GHz to 31 GHz. It has a simulated and a measured attenuation constant of 0.636 Np/m and 1.56 Np/m respectively, for the whole operating frequency range and is among the lowest reported values to date. The proposed HSIW of this paper, can be compared with other state- of-the-art designs in terms of compactness, manufacturing cost and performance. The designed HSIW can be integrated with other planar circuits and can be used to build functional devices such as antennas or filters for 5G, robotics and IoT applications.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121131823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559816
K. Klinieam, P. Noiying
In a plating process, its quality control process depends on its employees' skills and experience. In long work hours of the quality control: the QC process causes fatigue and the employees' visual problem. Additionally, lacking experience, skills, leaving the job, and even personal issues of the employees who work in the QC process can harm the company's quality control. This research is the area of research development. The authors focus on design and copper plating quality control system development to solve problems and enhance the plating industry's business benefits and reliability. The article presents a machine vision approach for quality control of copper plating. The authors apply the machine vision concept by using and color spectrum and color-matching techniques to solve the copper plating process's quality control problems from human errors. This system simultaneously identifies and classify oxidation defect on copper plating of pole pieces of microwave ovens. In this work, the paper presents 1. oxidation defect problems in a copper plating industry 2. color spectrum and color matching concept, 3. system architecture, 4. the experiment, and the conclusion of from result of the experiment.
{"title":"A Machine Vision Approach for Copper Plating Quality Control System Development","authors":"K. Klinieam, P. Noiying","doi":"10.1109/RI2C51727.2021.9559816","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559816","url":null,"abstract":"In a plating process, its quality control process depends on its employees' skills and experience. In long work hours of the quality control: the QC process causes fatigue and the employees' visual problem. Additionally, lacking experience, skills, leaving the job, and even personal issues of the employees who work in the QC process can harm the company's quality control. This research is the area of research development. The authors focus on design and copper plating quality control system development to solve problems and enhance the plating industry's business benefits and reliability. The article presents a machine vision approach for quality control of copper plating. The authors apply the machine vision concept by using and color spectrum and color-matching techniques to solve the copper plating process's quality control problems from human errors. This system simultaneously identifies and classify oxidation defect on copper plating of pole pieces of microwave ovens. In this work, the paper presents 1. oxidation defect problems in a copper plating industry 2. color spectrum and color matching concept, 3. system architecture, 4. the experiment, and the conclusion of from result of the experiment.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121512822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559774
Pongsathorn Chomdee, A. Boonpoonga, T. Lertwiriyaprapa
This paper presents the study on the ground penetrating radar (GPR) based-detection of an object buried under the railway. The object is presented as an improvised explosive device (IED) often occurred in the south Thailand. A clutter removal technique is applied to the GPR system in order to mitigate the effect of the clutter due to the rocks resulting to the inhomogeneous ground under the railway. Several simulations were conducted by using gprMax in order to investigate the performance of the GPR based-detection in term of the B-scan image. Simulations were setup as practical situations of the terrorism burying the IED under the railway. In simulations, the inhomogeneous ground under the railway was modelled by using a method of random sequential adsorption (RSA). Simulations were divided into several categories i.e. cases with and without the railway, non-homogeneous soil case, and homogeneous soil case. The simulations results show that the railway and non-homogeneous soil directly affect to degradation of the parabolic curve in the B-scan GPR image. The clutter removal was performed by subtracting the results of simulations with railway and non-homogeneous soil from those of simulations without railway and homogeneous soil. After performing the clutter removal, the results validate the improvement of the parabolic curve in the B-scan GPR image.
{"title":"Study on the Detection of Object Buried under Railway by using Clutter Removal Technique","authors":"Pongsathorn Chomdee, A. Boonpoonga, T. Lertwiriyaprapa","doi":"10.1109/RI2C51727.2021.9559774","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559774","url":null,"abstract":"This paper presents the study on the ground penetrating radar (GPR) based-detection of an object buried under the railway. The object is presented as an improvised explosive device (IED) often occurred in the south Thailand. A clutter removal technique is applied to the GPR system in order to mitigate the effect of the clutter due to the rocks resulting to the inhomogeneous ground under the railway. Several simulations were conducted by using gprMax in order to investigate the performance of the GPR based-detection in term of the B-scan image. Simulations were setup as practical situations of the terrorism burying the IED under the railway. In simulations, the inhomogeneous ground under the railway was modelled by using a method of random sequential adsorption (RSA). Simulations were divided into several categories i.e. cases with and without the railway, non-homogeneous soil case, and homogeneous soil case. The simulations results show that the railway and non-homogeneous soil directly affect to degradation of the parabolic curve in the B-scan GPR image. The clutter removal was performed by subtracting the results of simulations with railway and non-homogeneous soil from those of simulations without railway and homogeneous soil. After performing the clutter removal, the results validate the improvement of the parabolic curve in the B-scan GPR image.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"08 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127141940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559818
Apichart Kaewcharoen, S. Chalermwisutkul
In this paper, an interdigitated capacitive (IDC) touch sensor embedded in a laminated glass is proposed. The electrodes are sandwiched between two layers of glass in order to enhance the durability of the sensor structure. The proposed structure allows a large touch sensing area compared to the self-capacitance sensor. In addition, an IDC touch sensor is more immune to false detection compared to a self-capacitive sensor due to the well-defined sensing area with high electric field density. A study using electromagnetic simulation has been carried out to investigate the effect of thickness and type of glass on the performance of the touch sensor. Electrical properties including effective dielectric constant and loss tangent of different glass types are also considered in the simulation. The dimensions including IDC finger width, length and the gap between two electrodes are optimized for sensitivity of the touch sensor. The capacitance values while touching different areas of the sensor are also compared and ensured that the touch and non-touch states can be clearly differentiated independent of the touched area.
{"title":"Interdigitated Capacitive Touch Sensor Integrated in Laminated Glass with a Large Sensing Area","authors":"Apichart Kaewcharoen, S. Chalermwisutkul","doi":"10.1109/RI2C51727.2021.9559818","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559818","url":null,"abstract":"In this paper, an interdigitated capacitive (IDC) touch sensor embedded in a laminated glass is proposed. The electrodes are sandwiched between two layers of glass in order to enhance the durability of the sensor structure. The proposed structure allows a large touch sensing area compared to the self-capacitance sensor. In addition, an IDC touch sensor is more immune to false detection compared to a self-capacitive sensor due to the well-defined sensing area with high electric field density. A study using electromagnetic simulation has been carried out to investigate the effect of thickness and type of glass on the performance of the touch sensor. Electrical properties including effective dielectric constant and loss tangent of different glass types are also considered in the simulation. The dimensions including IDC finger width, length and the gap between two electrodes are optimized for sensitivity of the touch sensor. The capacitance values while touching different areas of the sensor are also compared and ensured that the touch and non-touch states can be clearly differentiated independent of the touched area.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127710978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-01DOI: 10.1109/RI2C51727.2021.9559822
Lianne Kirsten Visperas, Yodsawalai Chodpathumwan
Time-series data model emerges to capture sequences of temporal data. Time-series data can be found in various data domains such as economics, epidemiology, social sciences, physical science, and so on. Due to its variation of applications, there are many developments of time series database management systems (TSDBs). However, different TSDBs boast their uniqueness and advantage with comparison of other existing database management systems or particularly other versions of TSDBs. The comparison typically depends on the developers of TSDBs and the target applications. Furthermore, there exists no standard time-series database benchmark. In fact, it has been known that different data domains feature different data characteristics that may affect performances of databases and related algorithms. In this paper, we focus solely on the performance testing of TSDBs over power measurement data. We pay close attention to the characteristics of this data domain, and develop a benchmarking framework based on power measurement data. We use this benchmark to compare 3 TSDBs systems: InfluxDB, OpenTSDB and TimescaleDB as a showcase of our framework. In addition, our framework also considers systems resources in addition to query performances of the databases.
{"title":"Time-Series Database Benchmarking Framework for Power Measurement Data","authors":"Lianne Kirsten Visperas, Yodsawalai Chodpathumwan","doi":"10.1109/RI2C51727.2021.9559822","DOIUrl":"https://doi.org/10.1109/RI2C51727.2021.9559822","url":null,"abstract":"Time-series data model emerges to capture sequences of temporal data. Time-series data can be found in various data domains such as economics, epidemiology, social sciences, physical science, and so on. Due to its variation of applications, there are many developments of time series database management systems (TSDBs). However, different TSDBs boast their uniqueness and advantage with comparison of other existing database management systems or particularly other versions of TSDBs. The comparison typically depends on the developers of TSDBs and the target applications. Furthermore, there exists no standard time-series database benchmark. In fact, it has been known that different data domains feature different data characteristics that may affect performances of databases and related algorithms. In this paper, we focus solely on the performance testing of TSDBs over power measurement data. We pay close attention to the characteristics of this data domain, and develop a benchmarking framework based on power measurement data. We use this benchmark to compare 3 TSDBs systems: InfluxDB, OpenTSDB and TimescaleDB as a showcase of our framework. In addition, our framework also considers systems resources in addition to query performances of the databases.","PeriodicalId":422981,"journal":{"name":"2021 Research, Invention, and Innovation Congress: Innovation Electricals and Electronics (RI2C)","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127711410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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