Pub Date : 2015-04-13DOI: 10.1109/SAS.2015.7133652
A. Sorbara, E. Zereik, M. Bibuli, G. Bruzzone, M. Caccia
The need for technological transfer of robotic technology, already available and well established at research level, is now a major issue for the robotic community in order to address applications within civilian scenarios. In particular, concerning the marine and maritime context, safe and highly reliable navigation guidance and control (NGC) systems are strongly required to perform autonomous and critical operations with unmanned robots. To this aim, a very sensitive issue is represented by collision avoidance systems that have to be smart enough to reactively detect unexpected obstacles and perform the necessary avoidance manoeuvres to safely prevent collisions. The present paper proposes a highly innovative obstacle detection sensor, combining both passive and active optical devices and based on a new concept of optronic system. It is specifically conceived for collision avoidance tasks in marine environments, designed to be easily mounted on small-medium sized USVs (Unmanned Surface Vehicles). Its innovation consists in the interaction between the different integrated sensors, that are in fact totally decoupled. Preliminary experimental data collected by the sensor are reported, together with some simulations that highlight the ability of the system to detect and correctly avoid both still obstacles and mobile traversing obstacles.
{"title":"Low cost optronic obstacle detection sensor for unmanned surface vehicles","authors":"A. Sorbara, E. Zereik, M. Bibuli, G. Bruzzone, M. Caccia","doi":"10.1109/SAS.2015.7133652","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133652","url":null,"abstract":"The need for technological transfer of robotic technology, already available and well established at research level, is now a major issue for the robotic community in order to address applications within civilian scenarios. In particular, concerning the marine and maritime context, safe and highly reliable navigation guidance and control (NGC) systems are strongly required to perform autonomous and critical operations with unmanned robots. To this aim, a very sensitive issue is represented by collision avoidance systems that have to be smart enough to reactively detect unexpected obstacles and perform the necessary avoidance manoeuvres to safely prevent collisions. The present paper proposes a highly innovative obstacle detection sensor, combining both passive and active optical devices and based on a new concept of optronic system. It is specifically conceived for collision avoidance tasks in marine environments, designed to be easily mounted on small-medium sized USVs (Unmanned Surface Vehicles). Its innovation consists in the interaction between the different integrated sensors, that are in fact totally decoupled. Preliminary experimental data collected by the sensor are reported, together with some simulations that highlight the ability of the system to detect and correctly avoid both still obstacles and mobile traversing obstacles.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115799455","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133573
M. Rosenberger, R. Futterer, Fred Ziegner, M. Schellhorn
The sharpness of edge transition is one of the major requirements in optical sensing especially in the field of image processing. Therefore a lot of algorithms were assessed in the field of digital photography. In the field of industrial image processing especially multispectral imaging different focus positions are needed to get an optimal focus position for every sampling channel. Therefore a control loop was developed which uses an inductive sensor to measure the actual position of an image sensor. With this information a voice coil were activated to actuate the sensor into the optimal position. For a correct operation a resolution of less than fifty microns have to be reached. The paper presents the construction as well as the electronic and sensor actor design. First evaluations demonstrating a proof of concept and will also discussed in the paper.
{"title":"Nearfield sensing and actuation for multispectral imaging systems","authors":"M. Rosenberger, R. Futterer, Fred Ziegner, M. Schellhorn","doi":"10.1109/SAS.2015.7133573","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133573","url":null,"abstract":"The sharpness of edge transition is one of the major requirements in optical sensing especially in the field of image processing. Therefore a lot of algorithms were assessed in the field of digital photography. In the field of industrial image processing especially multispectral imaging different focus positions are needed to get an optimal focus position for every sampling channel. Therefore a control loop was developed which uses an inductive sensor to measure the actual position of an image sensor. With this information a voice coil were activated to actuate the sensor into the optimal position. For a correct operation a resolution of less than fifty microns have to be reached. The paper presents the construction as well as the electronic and sensor actor design. First evaluations demonstrating a proof of concept and will also discussed in the paper.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121212628","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133627
Andres Gomez, M. F. Lagadec, M. Magno, L. Benini
A self-sustainable wireless sensor node for the monitoring radiation in contaminated and poorly accessible areas is presented. The node is designed to work in collaboration with an unmanned aerial vehicle used for two essential mission steps: air-deploying the wireless sensor nodes at suitable locations and acquiring data logs via ultra-low power, short-range radio communication in fly-by mode, after a wake-up routine. The system allows for the use of off-the-shelf components for defining mission, drop-zone and trajectory, for compressing data, and for communication management. The node is equipped with a low-power nuclear radiation sensor and it was designed and implemented with self-sustainability in mind as it will be deployed in hazardous, inaccessible areas. To this end, the proposed node uses a combination of complementary techniques: a low-power microcontroller with non-volatile memory, energy harvesting, adaptive power management and duty cycling, and a nano-watt wake-up radio. Experimental results show the power consumption efficiency of the solution, which achieves 70uW in sleep mode and 500uW in active mode. Finally, simulations based on actual field measurements confirm the solution's self-sustainability and illustrate the impact of different sampling rates and that of the wake-up radio.
{"title":"Self-powered wireless sensor nodes for monitoring radioactivity in contaminated areas using unmanned aerial vehicles","authors":"Andres Gomez, M. F. Lagadec, M. Magno, L. Benini","doi":"10.1109/SAS.2015.7133627","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133627","url":null,"abstract":"A self-sustainable wireless sensor node for the monitoring radiation in contaminated and poorly accessible areas is presented. The node is designed to work in collaboration with an unmanned aerial vehicle used for two essential mission steps: air-deploying the wireless sensor nodes at suitable locations and acquiring data logs via ultra-low power, short-range radio communication in fly-by mode, after a wake-up routine. The system allows for the use of off-the-shelf components for defining mission, drop-zone and trajectory, for compressing data, and for communication management. The node is equipped with a low-power nuclear radiation sensor and it was designed and implemented with self-sustainability in mind as it will be deployed in hazardous, inaccessible areas. To this end, the proposed node uses a combination of complementary techniques: a low-power microcontroller with non-volatile memory, energy harvesting, adaptive power management and duty cycling, and a nano-watt wake-up radio. Experimental results show the power consumption efficiency of the solution, which achieves 70uW in sleep mode and 500uW in active mode. Finally, simulations based on actual field measurements confirm the solution's self-sustainability and illustrate the impact of different sampling rates and that of the wake-up radio.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128074781","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133631
Mingyang Lu, Qian Zhao, Peipei Hu, W. Yin, A. Peyton
The magnetic polarization tensor is a frequency-dependent, rotation-invariant and object-specific property of a metallic object. This paper presents an approach to compute the magnetic polarization tensor of a metallic object based on the Boundary Element Method (BEM), which treats the object as a perfect electrical conductor (PEC) and therefore is able to predict the limiting cases where very high frequency and/or high conductivity is assumed. A uniform magnetic field is applied to an object and the scattered field at a certain distance is obtained in the simulations. The magnetic tensor can then be deduced from the scattered field. The simulated results agree well with an analytical solution for spheres and with measured results for a number of cylinders for limiting cases.
{"title":"Prediction of the asymptotical magnetic polarization tensors for cylindrical samples using the boundary element method","authors":"Mingyang Lu, Qian Zhao, Peipei Hu, W. Yin, A. Peyton","doi":"10.1109/SAS.2015.7133631","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133631","url":null,"abstract":"The magnetic polarization tensor is a frequency-dependent, rotation-invariant and object-specific property of a metallic object. This paper presents an approach to compute the magnetic polarization tensor of a metallic object based on the Boundary Element Method (BEM), which treats the object as a perfect electrical conductor (PEC) and therefore is able to predict the limiting cases where very high frequency and/or high conductivity is assumed. A uniform magnetic field is applied to an object and the scattered field at a certain distance is obtained in the simulations. The magnetic tensor can then be deduced from the scattered field. The simulated results agree well with an analytical solution for spheres and with measured results for a number of cylinders for limiting cases.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116733365","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133645
B. Ivsic, D. Bonefačić, J. Bartolić
Guidelines for modification of conventional antenna design to yield efficient operation in body-centric environment are presented. The interaction of the antenna and human body is investigated by modeling the wave propagation around torso. Two types of wearable antennas based on modifying quarter-wavelength shorted patch are designed and manufactured, while integration of the antennas and RFID sensors into the everyday clothes is addressed.
{"title":"Textile antennas for on-body sensors","authors":"B. Ivsic, D. Bonefačić, J. Bartolić","doi":"10.1109/SAS.2015.7133645","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133645","url":null,"abstract":"Guidelines for modification of conventional antenna design to yield efficient operation in body-centric environment are presented. The interaction of the antenna and human body is investigated by modeling the wave propagation around torso. Two types of wearable antennas based on modifying quarter-wavelength shorted patch are designed and manufactured, while integration of the antennas and RFID sensors into the everyday clothes is addressed.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122075253","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133584
V. Jelicic, D. Oletić, T. Sever, V. Bilas
Metal-Oxide Semiconductor gas sensors are small in size and affordable, which makes them appropriate for implementation in battery-powered wearable sensing devices. However, their big flaw is the need to be heated to a certain temperature to react with the gas from the atmosphere, which consumes energy and drains the battery of the sensing device. In this paper we experimentally evaluate the possibilities to determine changes in gas concentration from the very beginning of the sensor's response. Our experiments in controlled conditions show that the increment of CO concentration could be determined in the first 65 ms of sensor heating, while the sensing layer is still in its transient state. That indicates the possibility of more than 30 times energy savings compared to the experiments where the CO concentration is determined after the sensing layer reaches stable state.
{"title":"Evaluation of MOX gas sensor transient response for low-power operation","authors":"V. Jelicic, D. Oletić, T. Sever, V. Bilas","doi":"10.1109/SAS.2015.7133584","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133584","url":null,"abstract":"Metal-Oxide Semiconductor gas sensors are small in size and affordable, which makes them appropriate for implementation in battery-powered wearable sensing devices. However, their big flaw is the need to be heated to a certain temperature to react with the gas from the atmosphere, which consumes energy and drains the battery of the sensing device. In this paper we experimentally evaluate the possibilities to determine changes in gas concentration from the very beginning of the sensor's response. Our experiments in controlled conditions show that the increment of CO concentration could be determined in the first 65 ms of sensor heating, while the sensing layer is still in its transient state. That indicates the possibility of more than 30 times energy savings compared to the experiments where the CO concentration is determined after the sensing layer reaches stable state.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124257729","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133604
Karlo Griparic, Tomislav Haus, D. Miklić, S. Bogdan
Interacting with a specific animal society by integrating autonomous robot/s into the society, has become a powerful method to influence the behaviour of animals and investigate collective behaviour of both, animal and robot societies. In order to interact with animals, artificial unit/s should be well integrated into their society. In the European project ASSISIbf, a network of static autonomous robots called CASUs (Combined Actuator Sensor Units) for interaction with young honeybees has been designed. In the proposed approach CASUs can affect honeybees using three types of physical stimuli: heat, vibration and light. To provide feedback signals necessary for controlling CASU interaction with honeybees, accurate and reliable measurements of the stimuli are necessary. This paper describes the mechanical and electronic design of CASUs, capable of emitting controllable heat, vibration and light stimulations. Each CASU is equipped with temperature sensors, 3-axis accelerometers, infrared proximity sensors and microcontroller for data processing. Preliminary experimental results with honeybee groups are presented.
{"title":"Combined actuator sensor unit for interaction with honeybees","authors":"Karlo Griparic, Tomislav Haus, D. Miklić, S. Bogdan","doi":"10.1109/SAS.2015.7133604","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133604","url":null,"abstract":"Interacting with a specific animal society by integrating autonomous robot/s into the society, has become a powerful method to influence the behaviour of animals and investigate collective behaviour of both, animal and robot societies. In order to interact with animals, artificial unit/s should be well integrated into their society. In the European project ASSISIbf, a network of static autonomous robots called CASUs (Combined Actuator Sensor Units) for interaction with young honeybees has been designed. In the proposed approach CASUs can affect honeybees using three types of physical stimuli: heat, vibration and light. To provide feedback signals necessary for controlling CASU interaction with honeybees, accurate and reliable measurements of the stimuli are necessary. This paper describes the mechanical and electronic design of CASUs, capable of emitting controllable heat, vibration and light stimulations. Each CASU is equipped with temperature sensors, 3-axis accelerometers, infrared proximity sensors and microcontroller for data processing. Preliminary experimental results with honeybee groups are presented.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128004887","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133586
Daniel García-Lesta, E. Ferro, V. Brea, P. López, D. Cabello, J. Iglesias, J. Castillejo
Pests due to terrestrial mollusks cause serious damage, both economic and ecological, in various types of agricultural plantations. In this paper we develop a low cost capacitive sensor that wirelessly communicates with the base, to monitor the activity of land snails. Once implemented physically, it has been tested in a controlled miniplot with favorable results.
{"title":"Capacitance-based wireless sensor mote for snail pest detection","authors":"Daniel García-Lesta, E. Ferro, V. Brea, P. López, D. Cabello, J. Iglesias, J. Castillejo","doi":"10.1109/SAS.2015.7133586","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133586","url":null,"abstract":"Pests due to terrestrial mollusks cause serious damage, both economic and ecological, in various types of agricultural plantations. In this paper we develop a low cost capacitive sensor that wirelessly communicates with the base, to monitor the activity of land snails. Once implemented physically, it has been tested in a controlled miniplot with favorable results.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124562257","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133651
N. Hurtós, N. Palomeras, Arnau Carrera, M. Carreras
In the last few years, forward-looking sonar devices have emerged as a powerful perception alternative for those underwater environments with reduced visibility. Thanks to its capability to deliver high quality acoustic images at a near-video frame rate, they can be regarded as the analogous tool of optical cameras for operations conducted in turbid waters. However, despite the analogy, the particularities of forward-looking sonar imagery pose a significant challenge to the techniques typically used on optical images and, especially, to the key step of image registration, essential in applications like mosaicing, sonar-aided navigation or image denoising. In this sense, previous investigations have encouraged the use of spectral registration methods as a promising alternative over the traditional feature-based registration approaches used on optical images. In this paper, we propose to improve the spectral registration of forward-looking sonar images with an adaptive filtering technique that allows to cope with the noise and variability inherent to the forward-looking sonar image registration problem. Results show that by using the proposed filtering we achieve a more accurate pairwise alignment of the sonar images that can benefit subsequent processing in many applications.
{"title":"Adaptive frequency filtering for forward-looking sonar imagery spectral registration","authors":"N. Hurtós, N. Palomeras, Arnau Carrera, M. Carreras","doi":"10.1109/SAS.2015.7133651","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133651","url":null,"abstract":"In the last few years, forward-looking sonar devices have emerged as a powerful perception alternative for those underwater environments with reduced visibility. Thanks to its capability to deliver high quality acoustic images at a near-video frame rate, they can be regarded as the analogous tool of optical cameras for operations conducted in turbid waters. However, despite the analogy, the particularities of forward-looking sonar imagery pose a significant challenge to the techniques typically used on optical images and, especially, to the key step of image registration, essential in applications like mosaicing, sonar-aided navigation or image denoising. In this sense, previous investigations have encouraged the use of spectral registration methods as a promising alternative over the traditional feature-based registration approaches used on optical images. In this paper, we propose to improve the spectral registration of forward-looking sonar images with an adaptive filtering technique that allows to cope with the noise and variability inherent to the forward-looking sonar image registration problem. Results show that by using the proposed filtering we achieve a more accurate pairwise alignment of the sonar images that can benefit subsequent processing in many applications.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129024067","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 : 2015-04-13DOI: 10.1109/SAS.2015.7133608
Valentin Roscher, Matthias Schneider, P. Durdaut, N. Sassano, Sergej Pereguda, Eike Mense, K. Riemschneider
In electric vehicles, batteries with many cells are used to supply the high voltages needed for the power train. The battery is controlled by a battery management system (BMS) which needs measurement data from each individual cell. Up to now, wired solutions with specialized measurement controllers for battery modules are in use. Some of these communicate over data bus structures. Our group proposes as an alternative solution the use of wireless communication in the near RF field area. The basics of this solutions have already been published [1]. In this article we present more advanced functionality for the wireless sensors approach. A functional module has been developed for impedance spectroscopy of each individual cell in the battery stack during automotive operation. Electrochemical impedance spectroscopy is a powerful method to determine the battery state beyond common and simple models. This technique needs precise and synchronized measurements of the common current and the voltages of the individual cells. A communication and control protocol has been implemented in hard- and software, including a trigger-broadcast operating mode. This solution has to fulfill the time precision requirements of the distributed measurements in the range of a few μs. Therefore, proprietary protocol solutions have been developed. Additional modules in the sensor system allow other functions such as cell balancing and an energy saving wake-up function for the sensor modules. These sensor modules are designed as tailored hardware for integration inside the individual battery cells.
{"title":"Synchronisation using wireless trigger-broadcast for impedance spectroscopy of battery cells","authors":"Valentin Roscher, Matthias Schneider, P. Durdaut, N. Sassano, Sergej Pereguda, Eike Mense, K. Riemschneider","doi":"10.1109/SAS.2015.7133608","DOIUrl":"https://doi.org/10.1109/SAS.2015.7133608","url":null,"abstract":"In electric vehicles, batteries with many cells are used to supply the high voltages needed for the power train. The battery is controlled by a battery management system (BMS) which needs measurement data from each individual cell. Up to now, wired solutions with specialized measurement controllers for battery modules are in use. Some of these communicate over data bus structures. Our group proposes as an alternative solution the use of wireless communication in the near RF field area. The basics of this solutions have already been published [1]. In this article we present more advanced functionality for the wireless sensors approach. A functional module has been developed for impedance spectroscopy of each individual cell in the battery stack during automotive operation. Electrochemical impedance spectroscopy is a powerful method to determine the battery state beyond common and simple models. This technique needs precise and synchronized measurements of the common current and the voltages of the individual cells. A communication and control protocol has been implemented in hard- and software, including a trigger-broadcast operating mode. This solution has to fulfill the time precision requirements of the distributed measurements in the range of a few μs. Therefore, proprietary protocol solutions have been developed. Additional modules in the sensor system allow other functions such as cell balancing and an energy saving wake-up function for the sensor modules. These sensor modules are designed as tailored hardware for integration inside the individual battery cells.","PeriodicalId":384041,"journal":{"name":"2015 IEEE Sensors Applications Symposium (SAS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132758025","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：