Hi there, I am Jason from Malaysia, currently working as a postdoc in Taiwan.
I travel across Taiwan to deploy and actively maintain slope monitoring stations, perform geophysical exploration (surface and borehole) works at engineering scale.
Despite my major in geotechnical engineering, I am also an amateur maker who loves to integrate my hobbies into ongoing projects to make life better for everyone.
Originally tinkered with some arduino unos and nanos, I found that commercially available solutions are either too expensive or too proprietary for full integration.
Thanks to the open source community in arduino and raspi, I managed to interface a lot of monitoring hardwares (TDR, pressure sensors, inclinometers) to extremely flexible arduino/raspi.
This github page is for some side projects, including Internet-of-Things (IoT) software/hardware integration and OS related solutions.
I usually experiment with arduino, stm32, espressif (esp8266, esp32), raspberry pi and other MCU boards.
Starting from breadboarding and soldering through-hole board PCBs, I have currently arrived at prototyping custom PCB with KiCAD and easyEDA.
If you are interested in collaboration or wants some help in starting your own PCB, feel free to drop me an email.
Below is my CV, just in case, cheers!
Research
My doctoral research focused on broadband dielectric spectroscopy using advanced time domain reflectometry (TDR) analyses in geotechnical and geo-environmental monitoring. Through implementing self-referencing signal processing approach on conventional TDR methods and model-free non-linear optimization, the dielectric spectrum of materials can be measured accurately, rapidly, efficiently, cost-effectively both in laboratory and field environment, which only requires minimal calibration effort and has high adaptation robustness to survey conditions. This technique is implemented in soil dielectric spectroscopy to identify the effects on electrical properties from dry density, specific surface area and other factors.
I completed my doctoral degree in civil engineering with specialization in geotechnical engineering and engineering geophysics in Oct 2019. I pursued my doctoral studies under the supervision of Prof. Chih-Ping Lin in the Department of Civil Engineering, NCTU. During my years in the Geo-Imaging and Geo-Nerve Research Group, I led numerous engineering geophysical field surveys and managed projects from planning, data analysis, intercommunication, and report presentation to authorities. I have experience in electromagnetic, electrical and seismic geophysical methods, including time domain reflectometry, ground penetrating radar, electrical resistivity tomography, seismic refraction, seismic reflection and surface seismic field tests for engineering scale. During my five years of doctoral studies, I led my field team to perform numerous in-situ borehole geophysics all over Taiwan, including borehole PS-logging, borehole TDR, borehole electrical-logging, downhole seismic tests, borehole televiewer (acoustic and optical), and borehole electrical resistivity tomography (BERT).
Upon graduation from my doctoral studies, I have been working as a postdoctoral researcher at the Disaster Prevention and Water Environment Research Center (DPWE), NCTU. My main project is mainly on low-powered TDR based slope monitoring in deep-seated gravitational slope deformation (DSGSD) sites, with regional wireless sensor network (WSN) Internet of Things (IoT) deployment for ground water level and soil moisture content monitoring. 3 sites with a total of 8 TDR monitoring boreholes (some integrated with piezometers or inclinometer casing) and 10 standalone wireless sensors. I developed the all the automation GUI and required drivers with python, and integrated Raspberry Pi and Arduino based data logger within 3 months. Field deployments were accomplished by my co-advised master’s student and me. Inter-disciplinary collaboration between remote sensing, passive induced seismicity, and surface geophysics were performed extensively in these projects. Apart from the main project, my side projects include multi-channel analysis of surface waves (MASW) survey for dam safety inspection and various borehole geophysics in multiple engineering sites (including nuclear power plants). I have been involved in the energy generation monitoring in a microhydropower site in Zhudong, where both the software and hardware interface of the data acquisition is handled by myself, and provide real-time data monitoring through IoT infrastructures for further hydraulic and mechanical analysis.
Education
| 2014 - 2019 : PhD in Civil Engineering |
| National Chiao Tung University |
| Dissertation : “Advanced Time Domain Reflectometry Analyses for Flexible Dielectric Spectroscopy” |
| Advisor : Professor Chih-Ping Lin, Department Chair, NCTU |
| Research group : Geo-Imaging and Geo-Nerve Research Group, Disaster Prevention and Water Environment Research Center |
| 2013 - 2014 : MSc in Civil Engineering (Direct Pursuit of PhD Program) |
| National Chiao Tung University |
| 2010 - 2013 : BEng (Hons) in Civil Engineering |
| The Hong Kong Polytechnic University |
| Final Year Project: “Taxi Drivers’ Responses in Dilemma Zone at Signal Control Junctions” |
Publications
| 2021 |
| Chung, C.-C., Lin, C.-P., Ngui, Y. J., Lin, W.-C., and Yang, C.-S. (2021). Improved technical guide from physical model tests for TDR landslide monitoring. Engineering Geology, 106417. https://doi.org/10/gnj73t |
| Kang, K.-H., Chao, W.-A., Yang, C.-M., Chung, M.-C., Kuo, Y.-T., Yeh, C.-H., Liu, H.-C., Lin, C.-H., Lin, C.-P., Liao, J.-J., Chang, J.-M., Ngui, Y. J., Chen, C.-H., and Tai, T.-L. (2021). Rigidity Strengthening of Landslide Materials Measured by Seismic Interferometry. Remote Sensing, 13(14), 2834. https://doi.org/10/gmsnxt |
| 陳建新、鍾明劍、譚志豪、魏殷哲、康耿豪、趙韋安、戴東霖(2021)。崩積層非飽和水力參數對大規模崩塌穩定分析之影響。中興工程，151，39–49。(EI) |
| 2020 |
| 林志平、魏殷哲、王凱、林婉婷、吳采容、鍾志忠 (2020) ，地工電磁波導監測技術之新近發展，地工技術，166期。(EI) |
| 林志平、吳采容、吳柏林、劉興昌、魏殷哲、林俊宏 (2020)，近地表地球物理方法之簡介、挑戰及地工應用的調適，地工技術，165期，頁7-18。(EI) |
| 吳宜嶺、林志平、魏殷哲、鍾志忠 (2020) ，時域反射法濃度儀於水庫抽泥工程之應用，中國土木水利工程學刊，32卷1期，頁15-22。(EI) |
| 2019 |
| Lin, C.-H., Lin, C.-P., Ngui, Y. J., Wang, H., Wu, P.-L., He, G.-J., and Liu, H.-C. (2019). “Diameter assessment of soilcrete column using in-hole electrical resistivity tomography.” Géotechnique, 1-13. |
| Ngui, Y., Lin, C.-P., and Wu, T.-J. (2019). “Dielectric Spectroscopy Using Dual Reflection Analysis of TDR Signals.” Sensors, 19(6), 1299. |
| 2018 |
| Lin, C.-P., Ngui, Y. J., and Lin, C.-H. (2018). “Multiple Reflection Analysis of TDR Signal for Complex Dielectric Spectroscopy.” IEEE Transactions on Instrumentation and Measurement, 67(11), 2649-2661. |
| 2017 |
| Lin, C.-P., Ngui, Y. J., and Lin, C.-H. (2017). “A novel TDR signal processing technique for measuring apparent dielectric spectrum.” Measurement Science and Technology, IOP Publishing, 28(1), 015501. |
| 2016 |
| Chung, C.-C., Lin, C.-P., Ngui, Y.-J., Wang, K., and Lin, C.-H. (2016). “Laboratory Evaluation of Soil-Nailing Quality Inspection by an Improved TDR Method.” Journal of GeoEngineering, 11(3), 143-149. (EI) |
| 2015 |
| Chung, C.-C., Lin, C.-S. C., Wang, K., Lin, C.-S. C., and Ngui, Y. J. (2015). “Improved TDR Method for Quality Control of Soil-Nailing Works.” Journal of Geotechnical and Geoenvironmental Engineering, American Society of Civil Engineers, 142(1), 1-4. |
Conferences
| 2021 |
| Lin, C.-P., Ngui, Y. J., Wu, I.-L., Chung, C.-C., and Lin, W.-T. (2021). High Precision and Range of Concentration Measurement for Sediment-Water Mixture based on Time Domain Reflectometry. 2021 13th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA), 1–5. https://doi.org/10/gmsx3t |
| 2020 |
| 楊哲銘、翁孟嘉、魏殷哲、李國維、傅鈺堯、林志平、張智安、羅佳明 (2020)，深層片岩坡體滑動之活動性調查、監測、破壞機制與地質模型探討。第十四屆臺灣第四紀研討會，臺北，臺灣。 |
| 2019 |
| Lin, C.-P., Lin, C.-H., Ngui, Y. J., Wang H., Wu P.L., and Liu H.-C. (2019), “Jet-Grouting Column Diameter Measurement Using In-hole Electrical Resistivity Tomography”. 5th International Conference on Engineering Geophysics, Al Ain, United Arab Emirates. |
| Ngui, Y. J., and Lin, C.-P. (2019). Complex dielectric spectroscopy of soil using multiple reflection analysis on TDR signal. The 16th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (16ARC), Taipei, Taiwan. |
| Lin, C.-P., Ngui, Y. J., and Lin, C.-H. (2019, May). Multiple Reflection Analysis of TDR Signal for Complex Dielectric Spectroscopy. 2019 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Auckland, New Zealand. |
| Ngui, Y. J., and Lin, C.-P. (2019). “ Broadband Complex Dielectric Characterization of Soils by Time Domain Reflectometry.” Proceedings of the 8th International Congress on Environmental Geotechnics Volume 1, L. Zhan, Y. Chen, and A. Bouazza, eds., Springer Singapore, Singapore, 731-738. |
| 2018 |
| Lin, C.-P., and Ngui, Y. J. (2018). “Robust Extraction of Frequency-Dependent Dielectric Properties from Time Domain Reflectometry.” 2018 12th International Conference on Electromagnetic Wave Interaction with Water and Moist Substances (ISEMA), IEEE, Lublin, Poland, 1-9. |
| 2017 |
| Wang, H., Lin, C.-P., and Ngui, Y. J. (2017). “Countermeasures for the symmetric effect in the borehole-to-surface ERT survey.” International Conference on Engineering Geophysics, Al Ain, United Arab Emirates, 9-12 October 2017, SEG Global Meeting Abstracts, Society of Exploration Geophysicists, Al Ain, United Arab Emirates, 208-211. |
| Lin, C.-P., Ngui*, Y. J., and Lin, C.-H. (2017). “TDR Phase Velocity Analysis for Measuring Apparent Dielectric Spectrum of Soil.” International Geophysical Conference, Qingdao, China, 17-20 April 2017, Society of Exploration Geophysicists and Chinese Petroleum Society, Qingdao, China, 993-996. |
| Ngui, Y. J., Lin, C.-P., and Lin, C.-H. (2017). “Time Domain Reflectometry Phase Velocity Analysis for Measuring Apparent Dielectric Spectrum of Soil.” SAGEEP 2017, Environmental and Engineering Geophysical Society, Denver, Colorado, 50. |
| 2016 |
| Lin, C.-P., Ngui, Y. J., and Lin, C.-H. (2016). “TDR Phase Velocity Analysis for Measuring Apparent Dielectric Spectrum of Soil.” The 8th Asian Joint Symposium on Geotechnical and Geoenvironmental Engineering Program, Tainan, Taiwan, 171-175. |
| 2015 |
| 林志平、林俊宏、宋泊翰、劉興昌、魏殷哲 (2015) 。應用時域反射儀技術於河川底泥厚度之調查。中華民國大地工程學會, 中華民國第十六屆大地工程學術研討會, 高雄。(優良論文獎) |
Reviewer
- Measurement Science and Technology
- Measurement
- Journal of Environmental & Engineering Geophysics (JEEG)
Projects
| Year |
Details |
| 2020-2021 |
Low-powered TDR based slope monitoring in deep-seated gravitational slope deformation (DSGSD) sites, with regional wireless sensor network (WSN) deployment for ground water level and soil moisture content monitoring.- Jiasian District, Kaohsiung
- FanFan, Ilan
- FengLin, Hualien
- Ruisui, Hualien
- Wulu, Taitung
|
| 2020 |
Energy generation monitoring in microhydropower site in Zhudong |
| 2019-2020 |
Multi-channel analysis of surface waves (MASW) survey for dam safety inspection in Hushan Reservoir, Taiwan |
| 2016-2020 |
TDR and inclinometer based slope monitoring in multiple potential deep-seated landslide sites <ul><li>Alishan National Scenic Area, Chiayi, Taiwan</li><li>Fanfan, Ilan</li><li>Liu Gui, Kaohsiung</li><li>Lu Chang, Miaoli</li><li>Jufen, New Taipei City</li></ul> |
| 2017-2020 |
In-situ TDR soil moisture content monitoring using phase velocity analysis (PVA) and multiple reflection analysis (MRA) [5 projects] |
| 2017-2020 |
Research and development of reservoir capacity sustainability technology and its application |
| 2017 |
Development of in-situ measurement system for broadband electrical properties of contaminated soils (TDR MRA based dielectric spectroscopy) |
| 2015-2021 |
Borehole geophysics projects for geotechnical and geological investigation - Electrical logging [5 projects]
- Suspension PS-logging [7 projects]
- Borehole optical and acoustic televiewer [6 projects]
- Borehole flowmeter [1 project]
|
| 2015-2020 |
TDR based suspended sediment concentration (SSC) monitoring technique development for sediment transport and management in reservoir |
| 2015-2016 |
TDR based SSC monitoring technique development for offshore sediment transport monitoring |
| 2014-2016 |
In-situ TDR dielectric spectroscopy in contaminated site with active groundwater remediation operation for remediation efficiency assessment [3 projects] |
| 2015 |
Air content distribution investigation technique development in aquitard during groundwater remediation - time domain reflectometry (TDR) and ground penetrating radar (GPR) based monitoring |
Teaching Experience
- 2019-2021 : Co-advising doctoral and masters student
- Co-supervised two doctoral and six masters’ student in the research group
- In the field of time domain reflectometry (TDR) application in dielectric spectroscopy and slope monitoring, and electrical resistivity tomography (ERT) application in subsurface flow transport monitoring.
- 2014-2018 : Teaching Assistant and Lab Supervisor
- Soil Mechanics Laboratory, National Chiao Tung University
- Deliver lectures on the experimental tests for undergraduate level soil mechanics laboratory, guide and supervise other TAs to teach undergraduates regarding the mechanisms and operations of soil mechanics laboratory, handle the procurement and miscellaneous duties required to run the soil mechanics laboratory.
- 2016-2019 : Pre-PhD Teaching Assistant
- Engineering Mathematics (I) , National Chiao Tung University
- Provide supplementary lectures and TA sessions to undergraduate level engineering mathematics (I) on ODE, PDE, series, Laplace transformation. Substitute for lecturer to deliver lectures in case of absence.
- 2015-2019 : Co-instructing masters and undergraduate student
- National Chiao Tung University (NCTU)
- Mentor and advice research works of lab members at both masters (12) and undergraduate (5) levels.
Working Experience
| Date |
Experience |
| 2019-2021 |
Postdoctoral Researcher, Disaster Prevention and Water Environment Research Centre, NYCU |
| 2014-2019 |
Lab Student Leader, Geo-Imaging and Geo-Nerve Research Group, NCTU |
| 2012-2013 |
Group Leader, The Hong Kong Polytechnic University (HKPU) CSE Design Project |
| 2012 |
Assistant Engineer, Huang Hsiang Construction Corporation |
| 2011-2013 |
Student Helper, HKPU International Affairs Office (IAO) |
| 2011,2013 |
Leader of PolyU GSC Student Ambassador, HKPU IAO |
Skills
| Languages |
| English |
| Mandarin |
| Malay |
| Cantonese |
| Hakka |
| Coding |
| MATLAB, Python, LabVIEW, Visual Studio Code, Git |
| Geotechnical / Geophysical Analysis |
| AGI EarthImager, Comsol Multiphysics, SurfSeis, RGLDip, DIPS, Slope2000, PLATE, ETABS, IBM SPSS, Maple, Mathematica |
| CAD / GIS |
| AutoCAD, Google Earth Pro, QGIS, Tecplot, Surfer, KiCAD, easyEDA, Grapher |
| IoT related |
| Software-hardware integration, Raspberry Pi, Arduino, LoRa, NB-IoT, wireless sensor network, customized low powered data-logging device |