Pub Date : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9849915
Shikha Saini, Ganga Singh Bhawaria
Conventional wheel slip control method uses slip velocity as control variable to reduce output motor torque for arresting wheel slip. It suffers from some of the major setbacks which are substantiated in this paper by case studies from Indian Railway locomotives. Further this paper proposes novel approach using estimated adhesion torque to control wheel slip level in electric locomotives. From single rail wheel longitudinal plant dynamics, it can be derived that the adhesion torque is seen as load torque on the motor and therefore can be estimated using a state observer. Proposed control is based on the hypothesis that if the difference between the input motor torque and the estimated adhesion load torque on motor exceeds the pre-defined threshold value, excessive torque is generated. This excessive torque contributes to wheel acceleration and needs to be suppressed quickly by reducing the output motor torque. Thus, using estimated adhesion torque (motor load torque) directly to detect and control slip this paper contributes in eliminating the need to acquire train velocity information for slip control.
{"title":"Adhesion estimation based novel approach to control wheel slip in electric locomotives","authors":"Shikha Saini, Ganga Singh Bhawaria","doi":"10.1109/YEF-ECE55092.2022.9849915","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9849915","url":null,"abstract":"Conventional wheel slip control method uses slip velocity as control variable to reduce output motor torque for arresting wheel slip. It suffers from some of the major setbacks which are substantiated in this paper by case studies from Indian Railway locomotives. Further this paper proposes novel approach using estimated adhesion torque to control wheel slip level in electric locomotives. From single rail wheel longitudinal plant dynamics, it can be derived that the adhesion torque is seen as load torque on the motor and therefore can be estimated using a state observer. Proposed control is based on the hypothesis that if the difference between the input motor torque and the estimated adhesion load torque on motor exceeds the pre-defined threshold value, excessive torque is generated. This excessive torque contributes to wheel acceleration and needs to be suppressed quickly by reducing the output motor torque. Thus, using estimated adhesion torque (motor load torque) directly to detect and control slip this paper contributes in eliminating the need to acquire train velocity information for slip control.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127291647","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9850083
A. Teixeira, Helder Silva, R. E. Araújo
Indoor localization systems are an important topic in the field of manufacturing process. A computational infrastructure based on Bluetooth low energy technology with state estimators for filtering is used to localize employees in the shop floor. The researchers' motivation is two-folds: implement an indoor tracking system while promoting manage production time. In this paper, we discuss the first prototype of a localization system adapted to address these goals. Experimental results show that the system for our case study, achieves a localization accuracy of less than three meters.
{"title":"Indoor location infrastructure for time management tools: a case study","authors":"A. Teixeira, Helder Silva, R. E. Araújo","doi":"10.1109/YEF-ECE55092.2022.9850083","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9850083","url":null,"abstract":"Indoor localization systems are an important topic in the field of manufacturing process. A computational infrastructure based on Bluetooth low energy technology with state estimators for filtering is used to localize employees in the shop floor. The researchers' motivation is two-folds: implement an indoor tracking system while promoting manage production time. In this paper, we discuss the first prototype of a localization system adapted to address these goals. Experimental results show that the system for our case study, achieves a localization accuracy of less than three meters.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116359947","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 : 2022-07-01DOI: 10.1109/yef-ece55092.2022.9850220
{"title":"YEF-ECE 2022 Organizing Committee","authors":"","doi":"10.1109/yef-ece55092.2022.9850220","DOIUrl":"https://doi.org/10.1109/yef-ece55092.2022.9850220","url":null,"abstract":"","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124478041","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9850098
Joao J. M. Santos, S. Palma, C. Esteves, Hugo Gamboa, João Pedro Oliveira, A. C. Roque
The diagnosis of many diseases involves invasive detection methods, which are both painful and stressing for patients. In the last decades, the ever-growing development in electronic nose (E-Nose) technology made them great candidates for non-invasive disease detection methods. Such devices mimic the human olfactory system through a set of sensors which produce signals that can be associated with diseases. Recently, a class of low-cost and innovative ionogel sensors, developed by our group demonstrated their full applicability in E-Nose systems, opening a new and promising approach to the field. However, the operation of such sensor needs a background calibration phase which relies on the correct characterization and parameterization of the corresponding electrical sensor model.This paper proposes a model characterization methodology based on a set of frequency responses acquisitions of the sensor, under several humidity conditions. To obtain a flexible acquisition tool capable of acquiring accurate results, an analog front-end (AFE) circuit to interface with the interdigitated electrode (IDE) sensors is presented. Such AFE circuit is fully implemented using a programmable system-on-a-chip (PSoC), helping to reduce system size and cost. Lastly, a comparison between the electrical model and data acquired with the proposed system is presented.
{"title":"An electrical model characterization of an electronic nose chemical sensor using a programmable system-on-a-chip based AFE","authors":"Joao J. M. Santos, S. Palma, C. Esteves, Hugo Gamboa, João Pedro Oliveira, A. C. Roque","doi":"10.1109/YEF-ECE55092.2022.9850098","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9850098","url":null,"abstract":"The diagnosis of many diseases involves invasive detection methods, which are both painful and stressing for patients. In the last decades, the ever-growing development in electronic nose (E-Nose) technology made them great candidates for non-invasive disease detection methods. Such devices mimic the human olfactory system through a set of sensors which produce signals that can be associated with diseases. Recently, a class of low-cost and innovative ionogel sensors, developed by our group demonstrated their full applicability in E-Nose systems, opening a new and promising approach to the field. However, the operation of such sensor needs a background calibration phase which relies on the correct characterization and parameterization of the corresponding electrical sensor model.This paper proposes a model characterization methodology based on a set of frequency responses acquisitions of the sensor, under several humidity conditions. To obtain a flexible acquisition tool capable of acquiring accurate results, an analog front-end (AFE) circuit to interface with the interdigitated electrode (IDE) sensors is presented. Such AFE circuit is fully implemented using a programmable system-on-a-chip (PSoC), helping to reduce system size and cost. Lastly, a comparison between the electrical model and data acquired with the proposed system is presented.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123757914","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9849899
Bruno Serras, C. Gonçalves, Tiago Dias, A. L. Osório
Managing and monitoring the software and hard-ware artifacts of an industrial organization are fundamental efforts that can often be challenging endeavors to achieve, especially when such technological landscapes are composed of multiple heterogeneous systems. Usually, Internet of Things (IoT) devices are provided by different suppliers and may use different protocols and interfaces. Thus, the integration of these devices results in complex development and maintenance cycles. The Synoptics of Things (SoT) framework can address these problems, in conjunction with the Informatics System of Systems (ISoS) platform by promoting an open market competitive technology landscape for organizations. The purpose of the research presented in this paper was to extend the SoT framework in order to manage and monitor the different elements of an ISoS-enabled organization, namely the ISystems (Informatics Systems), CES (Cooperation Enabled Services), and Services. We argue that the SoT framework can be essential in a supervisory control and data acquisition (SCADA) system in today’s modern web, by adopting the concept of Web Components as a standard to enable the development of custom and reusable components. We present and discuss such issues in the context of the HORUS system, an informatic system responsible for payment enforcement in fueling stations. In this system, several devices must work in coordination, such as video cameras and video recorders, which are fundamental for the retrieving of license plate images and, therefore, be continually monitored to ensure the correct functioning of the HORUS system.
{"title":"Extending the Synoptics of Things (SoT) Framework to Manage ISoS Technology Landscapes","authors":"Bruno Serras, C. Gonçalves, Tiago Dias, A. L. Osório","doi":"10.1109/YEF-ECE55092.2022.9849899","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9849899","url":null,"abstract":"Managing and monitoring the software and hard-ware artifacts of an industrial organization are fundamental efforts that can often be challenging endeavors to achieve, especially when such technological landscapes are composed of multiple heterogeneous systems. Usually, Internet of Things (IoT) devices are provided by different suppliers and may use different protocols and interfaces. Thus, the integration of these devices results in complex development and maintenance cycles. The Synoptics of Things (SoT) framework can address these problems, in conjunction with the Informatics System of Systems (ISoS) platform by promoting an open market competitive technology landscape for organizations. The purpose of the research presented in this paper was to extend the SoT framework in order to manage and monitor the different elements of an ISoS-enabled organization, namely the ISystems (Informatics Systems), CES (Cooperation Enabled Services), and Services. We argue that the SoT framework can be essential in a supervisory control and data acquisition (SCADA) system in today’s modern web, by adopting the concept of Web Components as a standard to enable the development of custom and reusable components. We present and discuss such issues in the context of the HORUS system, an informatic system responsible for payment enforcement in fueling stations. In this system, several devices must work in coordination, such as video cameras and video recorders, which are fundamental for the retrieving of license plate images and, therefore, be continually monitored to ensure the correct functioning of the HORUS system.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123831693","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9849888
Gonçalo Mestre, J. Matos-Carvalho, R. Tavares
Being the climate changes a top concern in modern society, everyone has the mission to contribute to global warming reduction, by finding sustainable solutions for today’s and next generation problems. This paper approaches the design and demonstration of an irrigation management system using Artificial Intelligence (AI) to predict the exact amount of irrigation water. To fulfill the proposed objective, a Xiaomi Mi Flora Sensor combined with the use of an ESP32 micro-controller, air humidity, water flow sensors and a Raspberry Pi 4 results in the construction of an wireless intelligent solution. The solution not only contributes against water waste but also uses solar energy has power source, being a sustainable option.
{"title":"Irrigation Management System using Artificial Intelligence Algorithms","authors":"Gonçalo Mestre, J. Matos-Carvalho, R. Tavares","doi":"10.1109/YEF-ECE55092.2022.9849888","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9849888","url":null,"abstract":"Being the climate changes a top concern in modern society, everyone has the mission to contribute to global warming reduction, by finding sustainable solutions for today’s and next generation problems. This paper approaches the design and demonstration of an irrigation management system using Artificial Intelligence (AI) to predict the exact amount of irrigation water. To fulfill the proposed objective, a Xiaomi Mi Flora Sensor combined with the use of an ESP32 micro-controller, air humidity, water flow sensors and a Raspberry Pi 4 results in the construction of an wireless intelligent solution. The solution not only contributes against water waste but also uses solar energy has power source, being a sustainable option.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122931964","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9850088
J. Pinto, Fabio Gregorio, R. Oliveira, X. Granados, A. Álvarez, J. Murta-Pina
This work presents a novel electric motor with a rotor built by high-temperature superconducting (HTS) tapes. The motor is of axial flux (disc) type, in a double stator topology integrating conventional (copper) coils. The motor has as many coils as slots in the stator, and each is controlled independently. Due to this topology, the number of poles of the stator can be electronically changed, by adjusting the phase shifts of the voltages in each coil of the stator. A commutator was thus developed to vary the configuration of the poles of the motor and to evaluate its performance. Since HTS materials trap magnetic flux, one of the research questions of the work is to assess the viability of dynamically changing the poles configuration trapped in the rotor, i.e., under operation. The obtained results show that the HTS motor can have its polar formation reconfigured during operation without the need for the HTS material to transition to the normal state, losing superconductivity and the flux trapping ability. Experimental and numerical simulation results are presented in the paper, to demonstrate the viability of the proposed concept. Experimental tests allowed measuring electromagnetic quantities and collecting motor operating data in different configurations of poles. The stator losses were calculated in two different configurations using the finite element method.
{"title":"Preliminary Analysis of Core Losses and Performance of an Axial Flux Motor with High Temperature Superconducting Tapes on the Rotor","authors":"J. Pinto, Fabio Gregorio, R. Oliveira, X. Granados, A. Álvarez, J. Murta-Pina","doi":"10.1109/YEF-ECE55092.2022.9850088","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9850088","url":null,"abstract":"This work presents a novel electric motor with a rotor built by high-temperature superconducting (HTS) tapes. The motor is of axial flux (disc) type, in a double stator topology integrating conventional (copper) coils. The motor has as many coils as slots in the stator, and each is controlled independently. Due to this topology, the number of poles of the stator can be electronically changed, by adjusting the phase shifts of the voltages in each coil of the stator. A commutator was thus developed to vary the configuration of the poles of the motor and to evaluate its performance. Since HTS materials trap magnetic flux, one of the research questions of the work is to assess the viability of dynamically changing the poles configuration trapped in the rotor, i.e., under operation. The obtained results show that the HTS motor can have its polar formation reconfigured during operation without the need for the HTS material to transition to the normal state, losing superconductivity and the flux trapping ability. Experimental and numerical simulation results are presented in the paper, to demonstrate the viability of the proposed concept. Experimental tests allowed measuring electromagnetic quantities and collecting motor operating data in different configurations of poles. The stator losses were calculated in two different configurations using the finite element method.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126735511","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9850039
Ricardo Walker, Diogo Durão, Diogo Dias, I. Catarino, J. Murta-Pina, R. Oliveira
Superconducting materials show no resistivity under DC regimes and can generate extremely high magnetic flux densities, allowing for the development of disruptive or improved power grid applications. Yet, under AC, they experience losses that must be removed by the respective cryogenic system, which is responsible for maintaining the superconducting state. Measuring these losses is of utmost importance, e.g., for monitoring the condition of superconducting devices. In this paper, a new calorimetric method for measuring AC losses in superconducting systems is investigated. The proposed concept infers the level of the cryogenic fluid in a cryostat by measuring the echo time from sound waves reflected on it. The thermal energy (losses) that leads to fluid evaporation is then calculated. Using this method may lead to a faster and more direct approach to measuring losses when compared to other concepts, even if the sensor shows some error factors, as well as strict environmental requirements for its operation. A prototype of the sensor is tested in liquid nitrogen, and a preliminary assessment of its performance is carried out.
{"title":"Preliminary Assessment of an Ultrasonic Level Sensor for the Calorimetric Measurement of AC Losses in Superconducting Devices","authors":"Ricardo Walker, Diogo Durão, Diogo Dias, I. Catarino, J. Murta-Pina, R. Oliveira","doi":"10.1109/YEF-ECE55092.2022.9850039","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9850039","url":null,"abstract":"Superconducting materials show no resistivity under DC regimes and can generate extremely high magnetic flux densities, allowing for the development of disruptive or improved power grid applications. Yet, under AC, they experience losses that must be removed by the respective cryogenic system, which is responsible for maintaining the superconducting state. Measuring these losses is of utmost importance, e.g., for monitoring the condition of superconducting devices. In this paper, a new calorimetric method for measuring AC losses in superconducting systems is investigated. The proposed concept infers the level of the cryogenic fluid in a cryostat by measuring the echo time from sound waves reflected on it. The thermal energy (losses) that leads to fluid evaporation is then calculated. Using this method may lead to a faster and more direct approach to measuring losses when compared to other concepts, even if the sensor shows some error factors, as well as strict environmental requirements for its operation. A prototype of the sensor is tested in liquid nitrogen, and a preliminary assessment of its performance is carried out.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130660219","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9849953
Alexander Barth, Balakrishna Balakrishna, A. Willner
Digital transformation in an industrial sector enables new possibilities towards economical, highly flexible and resource-saving production. Significantly involved in this transformation are standardized software interfaces to enable read and write access to the data provided by automation devices from different manufacturers. Open Platform Communication Unified Architecture (OPC UA) is a widely used industrial communication middleware and ensures interoperability between the devices. Companion specifications in OPC UA offer a possibility to map domain-specific data models to OPC UA information models. However, these specifications usually define a static mapping and often enable complete access to various field-level properties. Therefore, a configurable mapping of field-level properties to OPC UA is desirable. This paper focuses on the development and investigation of a configurable information model for mapping the EtherCAT communication standard to OPC UA. The feasibility of the configurable information model has been validated by an experimental setup composed of an embedded Personal Computer (PC) and several EtherCAT field-level devices.
工业部门的数字化转型为经济、高度灵活和节约资源的生产提供了新的可能性。在此转换中重要的是标准化的软件接口，以支持对来自不同制造商的自动化设备提供的数据的读写访问。OPC UA (Open Platform Communication Unified Architecture)是一种广泛应用的工业通信中间件，它保证了设备之间的互操作性。OPC UA中的配套规范提供了将特定领域的数据模型映射到OPC UA信息模型的可能性。然而，这些规范通常定义静态映射，并且通常允许对各种字段级属性的完全访问。因此，需要一个字段级属性到OPC UA的可配置映射。本文重点研究了一种将EtherCAT通信标准映射到OPC UA的可配置信息模型。由嵌入式个人计算机(PC)和多个EtherCAT现场级设备组成的实验装置验证了可配置信息模型的可行性。
{"title":"Configurable Mapping of EtherCAT field-level devices to OPC UA","authors":"Alexander Barth, Balakrishna Balakrishna, A. Willner","doi":"10.1109/YEF-ECE55092.2022.9849953","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9849953","url":null,"abstract":"Digital transformation in an industrial sector enables new possibilities towards economical, highly flexible and resource-saving production. Significantly involved in this transformation are standardized software interfaces to enable read and write access to the data provided by automation devices from different manufacturers. Open Platform Communication Unified Architecture (OPC UA) is a widely used industrial communication middleware and ensures interoperability between the devices. Companion specifications in OPC UA offer a possibility to map domain-specific data models to OPC UA information models. However, these specifications usually define a static mapping and often enable complete access to various field-level properties. Therefore, a configurable mapping of field-level properties to OPC UA is desirable. This paper focuses on the development and investigation of a configurable information model for mapping the EtherCAT communication standard to OPC UA. The feasibility of the configurable information model has been validated by an experimental setup composed of an embedded Personal Computer (PC) and several EtherCAT field-level devices.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125749064","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 : 2022-07-01DOI: 10.1109/YEF-ECE55092.2022.9849922
B. Mendes, Dário Passos, N. Correia
LoRa emerged as one of the most promising technologies in the Internet of Things. It brought the possibility of transmitting over very long distances (in the kilometers range), at low energy cost and using the unlicensed frequency band. This allows the construction of low-cost networks with massive area coverage, as long as no obstructions are present. When obstacles exist in the field, or are expected, a characterization of the coverage turns out to be necessary in order to implement a fully operational network. This is particularly relevant in orchards and tree farms where this technology can be very useful for monitoring purposes. In this work we present the results from a coverage and range test performed prior to the deployment of a LoRaWAN sensor network in a citrus orchard. The measurements were done respecting specific physical constraints regarding sensor and gateway positioning which allowed to infer realistic information about signal quality. Our results indicate that this type of network deployment has a more detrimental effect in the LoraWAN communications’ quality then previously reported for forest environments.
{"title":"Coverage Characterization of LoRaWAN Sensor Networks for Citrus Orchard Monitoring","authors":"B. Mendes, Dário Passos, N. Correia","doi":"10.1109/YEF-ECE55092.2022.9849922","DOIUrl":"https://doi.org/10.1109/YEF-ECE55092.2022.9849922","url":null,"abstract":"LoRa emerged as one of the most promising technologies in the Internet of Things. It brought the possibility of transmitting over very long distances (in the kilometers range), at low energy cost and using the unlicensed frequency band. This allows the construction of low-cost networks with massive area coverage, as long as no obstructions are present. When obstacles exist in the field, or are expected, a characterization of the coverage turns out to be necessary in order to implement a fully operational network. This is particularly relevant in orchards and tree farms where this technology can be very useful for monitoring purposes. In this work we present the results from a coverage and range test performed prior to the deployment of a LoRaWAN sensor network in a citrus orchard. The measurements were done respecting specific physical constraints regarding sensor and gateway positioning which allowed to infer realistic information about signal quality. Our results indicate that this type of network deployment has a more detrimental effect in the LoraWAN communications’ quality then previously reported for forest environments.","PeriodicalId":444021,"journal":{"name":"2022 International Young Engineers Forum (YEF-ECE)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123171302","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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