John Araujo, M. Rodrigues, O. Postolache, F. Cercas, Francisco Javier Ferrero Martín, Alberto López Martínez
{"title":"Heart Rate Variability Analysis in Healthy Subjects Under Different Colored Lighting Conditions","authors":"John Araujo, M. Rodrigues, O. Postolache, F. Cercas, Francisco Javier Ferrero Martín, Alberto López Martínez","doi":"10.1109/I2MTC43012.2020.9129619","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129619","url":null,"abstract":"The exposure to colored light with different wavelengths has proved to affect the physiological functions of the human body. To test such influence, this work was focused on heart rate variability (HRV) analysis associated with different colored light exposure of healthy volunteers. A Photoplethysmography (PPG) wireless sensor network node was employed to acquire information about the cardiac activity, as it proves to be a more convenient and less intrusive method as electrocardiography (ECG). A small group of healthy volunteers were exposed to 10 minutes of blue and red light, preceded and followed by 5 minutes of dark lighting conditions. HRV was acquired during the last 5 minutes of each colored illumination period. The HRV analysis was based on time-domain variables, frequency-domain variables and fractal (nonlinear) analysis. The experimental results from this study show that PPG can be considered as a reliable method to study HRV. The exposure to different colored light conducted to HRV variations that characterize the autonomous nervous system balance. Experimental results obtained for volunteers exposed to different illumination conditions are also included in the paper.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129988236","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}
Ziliang Wei, Weikun Chen, M. Yang, Yueming Gao, Z. Lucev, M. Cifrek
{"title":"Design and Implementation of Galvanic Coupling Intra-Body Communication Transceivers using Differential Phase Shift Keying","authors":"Ziliang Wei, Weikun Chen, M. Yang, Yueming Gao, Z. Lucev, M. Cifrek","doi":"10.1109/I2MTC43012.2020.9129050","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129050","url":null,"abstract":"Intra-body communications (IBC) is a short-range wireless communication technology, which has been included as the third physical layer in the IEEE 802.15.6 standard. Up till the present moment, it is difficult to achieve a high-data-rate galvanic coupling IBC system, which is one of the main problems limiting the development of implanted medical sensors. In this paper, the modulation scheme of differential phase shift keying (DPSK) and coherent demodulation method of Costas loop are adopted in FPGA to design a galvanic coupling IBC transceiver system with low coupling amplitude and high data rate. By means of in vivo experiments, the data acquisition card is used to acquire the transmission data and calculate the bit error rate within a certain range of signal-to-noise ratio (SNR). The system achieves reliable transmission in the human body at a data rate of up to 1 Mbps under a low coupling amplitude, which provides a reference for the future development of IBC in the wearable or implantable medical sensors.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129163313","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}
Dmitrii G. Shadrin, T. Podladchikova, G. V. Ovchinnikov, A. L. Pavlov, M. Pukalchik, A. Somov
{"title":"Kalman Filtering for Accurate and Fast Plant Growth Dynamics Assessment","authors":"Dmitrii G. Shadrin, T. Podladchikova, G. V. Ovchinnikov, A. L. Pavlov, M. Pukalchik, A. Somov","doi":"10.1109/I2MTC43012.2020.9129053","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129053","url":null,"abstract":"Artificial growth systems are the essential part of the precision agriculture. It allows solving many problems associated with the growing demand in the environmental friendly food production in the context of increasing world population. Accurate and reliable assessment of plant growth dynamics parameters is crucial for the future success of the whole growing system parameters optimization. In this research, we report on the implementation of the extended Kalman filtering method for insitu evaluation of plant growth dynamics parameters. We show the reliability and benefits of the proposed approach on the simulated and experimental data obtained from the IoT-based testbed. We demonstrate that our method serves as a robust and computationally cost-effective tool for the accurate assessment of the growing dynamics that, in turn, could be used for the further optimization of the whole plant cultivation process in artificial conditions.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132424486","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}
{"title":"High-Definition Transcranial Direct Current Stimulation Device for Targeting Cerebral Cortex","authors":"G. Sharma, R. Raj, S. R. Chowdhury","doi":"10.1109/I2MTC43012.2020.9129573","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129573","url":null,"abstract":"Non-invasive brain stimulation (NIBS) devices are progressively used as neuromodulator and are showing optimistic potential in the field of point care medical technology. The main aim of this study is to develop a prototype device, which helps in improving various neurological disorders, by increasing or decreasing neuronal excitability, depending upon the selection of a weak intensity of direct current. Conventionally, high definition transcranial direct current stimulation (HD-tDCS) device mainly depends upon three factors, viz, small size of high definition electrodes, multi-electrode configurations and optimized distribution of weak direct currents to the active and return electrodes. The proposed prototype HD-tDCS device is mainly focused on the internal circuit of the device, which provides precise distribution of direct current to both active and return electrodes, considering selected configurations. In this paper, HD-tDCS device has been designed which provides a weak direct current in the range of 1.00mA to 4.00mA with a measured error of +0.06mA to 0.06mA in the output direct currents. The % error between the theoretical and the measured values is less than 2%.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132959447","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}
Oussama Ferhi, Marvin Sandner, K. Rohrmann, Phil Meier, M. Prochaska
{"title":"A Weak Magnetic Field Sensor with InSb-Magnetometers and Lock-in Amplifier","authors":"Oussama Ferhi, Marvin Sandner, K. Rohrmann, Phil Meier, M. Prochaska","doi":"10.1109/I2MTC43012.2020.9129217","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129217","url":null,"abstract":"Nowadays, a considerable part of magnetic field sensors is based on the magnetoresistive effect. Those sensors are employed in several automotive and industrial fields, such as current, rotational speed and angular position sensing. In low magnetic field applications, the sensors should fulfill an excellent signal-to-noise ratio and guarantee a high measurement sensitivity. The very first purpose of this work is to select an appropriate semiconductor-based sensor, which is physically compatible to the sensing method. Only sensor materials with high measurement sensitivity are useful. The main contribution of this paper is the combination of a modulated magnetic field with digital filtering methods in order to detect small magnetic fields in a thin Indium antimonide (InSb) Hall plate. Since the sensing principle is based on lock-in architecture, very weak magnetic field magnitudes are detectable. Furthermore, the following concept of a magnetic field sensor is based on signal modulation and digital signal processing to improve the sensing performance.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132056677","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}
Mathias Poik, D. Kohl, Mario Mayr, C. Kerschner, G. Schitter
{"title":"Efficient Demodulation for Measuring the Amplitude of Mechanical Oscillations","authors":"Mathias Poik, D. Kohl, Mario Mayr, C. Kerschner, G. Schitter","doi":"10.1109/I2MTC43012.2020.9129045","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129045","url":null,"abstract":"The accurate detection and demodulation of mechanical oscillations is crucial for the performance of miniaturized resonant sensors and scanners. Demodulation by external instruments such as lock-in amplifiers or spectrum analyzers is not always desired due to their large size, complexity and cost. The demodulation technique proposed in this paper enables a simplified measurement of the oscillation amplitude of a mechanical oscillator with integrated deflection sensors, such as piezoresistive or capacitive elements. Configuring the sensors in an AC bridge circuit operated at the oscillator resonance frequency leads to a direct demodulation at the output of the bridge circuit. The presented method is experimentally verified on an AFM cantilever with integrated piezoresistive elements.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130404908","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}
R. W. Porto, Luciano C. Ayres, Renato H. Neuenfeld, Claudia W. Carvalho, A. Geller, W. C. Oliveira
{"title":"Electrical Bioimpedance Scanning in Bacterial Diagnosis and Mastitis Detection","authors":"R. W. Porto, Luciano C. Ayres, Renato H. Neuenfeld, Claudia W. Carvalho, A. Geller, W. C. Oliveira","doi":"10.1109/I2MTC43012.2020.9129159","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129159","url":null,"abstract":"The Electrical Bioimpedance Scanning is a technique based on the electrical properties of biological materials and it can be applied in food analyses in order to perform bacterial diagnosis. This paper presents a bioimpedance measurement system to detect the presence of Staphylococcus aureus in milk samples. In an ABS structure, the frequency of the electric current was varied between 10Hz and 1MHz. The impedance measurement has been performed by four electrodes. Crude milk (autoclaved) and UHTintegral (I), semi-skimmed (SN) and skimmed (DN) - at different dilutions (12.5-100%) were with and without Staphylococcus aureus. The presence of S. aureus in the samples of UHT-integral milk has been suggested from the reduction in impedance values (pure=145.0Ω; 101 CFU/mL = 120.9Ω; 107 CFU/mL = 118.2Ω). In the frequency 1 MHz it was possible to verify a greater influence of the concentration of bacterial cells on the electric current. The higher the cell density, the lower the impedance. There was a difference in impedance values between raw milk (157.9Ω), crude autoclaved (120.0Ω) and UHT-integral (145.0Ω). The proposed measurement system response resembles a resistive and capacitive electric model, as expected, proving to be a promising tool in bacterial detection and food analysis.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127974536","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}
{"title":"Research on Droplet Properties in Atomization using Optical Imaging Measurements","authors":"Hongjun Sun, Yikun Luo, Hongbing Ding, Jinxia Li","doi":"10.1109/I2MTC43012.2020.9128704","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9128704","url":null,"abstract":"To study the properties of atomization, the atomized droplet parameters were analyzed using an optical method based on imaging measurements. For the experiments, a liquid flow rate control and metering apparatus was developed. Then, the tests were conducted on various liquid pressure and orifice diameter conditions at different measurement positions according to the influence factors in atomization. Finally, the diameter and velocity distribution of the atomized droplets were acquired, and the variations of the mean droplet diameter and velocity were analyzed in detail. The results indicate that both the diameter and velocity distributions of the atomized droplets are subject to log normal (LN) distribution, the average droplet diameter is negatively while the average droplet velocity is positively related with liquid pressure and orifice diameter near the spray outlet, and the detection position impacts the atomizing properties a lot.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128791774","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}
M. Catelani, L. Ciani, A. Bartolini, G. Guidi, G. Patrizi
{"title":"Characterization of a low-cost and low-power environmental monitoring system","authors":"M. Catelani, L. Ciani, A. Bartolini, G. Guidi, G. Patrizi","doi":"10.1109/I2MTC43012.2020.9129274","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129274","url":null,"abstract":"IoT is a revolutionary technology that represents the future of computing and communications. The paper focuses on the characterization of a Wireless Sensor Network used for smart agriculture, which is one of the new frontiers of IoT. Smart farming is the application of information and data technologies for optimizing complex farming systems. WSNs are widely used to measure agri-related information like temperature, humidity, solar radiation, presence of pollution and so on. In this paper the design of a wireless mesh network composed by low cost and low power system-on-a-chip is presented dealing with the frequently encountered issues of wireless networks. In particular, this work proposes a framework for the characterization of customized devices designed for monitoring networks: different types of test are performed in order to analyze the behavior of the components. The work focuses on the maximum coverage distance which is a critical parameter in agriculture field since the largeness of the involved area; it also deals with the thermal characterization to improve reliability performances and ADC calibration to ensure high accuracy of the acquired data. Moreover, the paper pays great attention on the power consumption of the sensor node, in fact the minimization of the current consumption of the nodes is a mandatory requirement to ensure low maintenance costs.","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123187354","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}
Rita Pinto, Marcelo Moreira, J. Bonifácio, A. Espírito-Santo
{"title":"An IEEE 1451 Vehicular Sensor Network Development","authors":"Rita Pinto, Marcelo Moreira, J. Bonifácio, A. Espírito-Santo","doi":"10.1109/I2MTC43012.2020.9129224","DOIUrl":"https://doi.org/10.1109/I2MTC43012.2020.9129224","url":null,"abstract":"The mobility platform proposed is based on e-bikes and a set of charging stations, spread all over the city, that use the sun's energy to charge the batteries of e-bikes. At the same time, the mobility of e-bikes is used to collect environmental parameters related to air quality. The user's mobile phone is used to connect the e-bike to the traceability and data collection system. The merge of technologies such as IoT and Sensor Networks (SN) in vehicles have originated the concept of Vehicular SN (VSN). To promote the acceptance and implementation of standardized SNs, the objective of the present work is to present a VSN compliant with the IEEE 1451 family of standards. It is presented the overall architecture of the VSN and is it described the implementation of services, methods and group of transducers to achieve the expected smartness of a VSN. Also, will be underlined how all VSN components interoperate as well as what operations should be done by which component in order to reduce energy","PeriodicalId":227967,"journal":{"name":"2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122559083","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}