Pub Date : 2014-04-17DOI: 10.1109/SAS.2014.6798923
Wei Hu, Haiying Zhang, Zhangyan Zhao, Yunfeng Wang, Xize Wang
A portable sensor system with signal processing techniques was developed in this paper, aiming to provide remote monitoring of vital signs of human subject. The designed sensor based on microwave Doppler radar enables accurate reconstruction of subject's motion caused by cardiopulmonary activities and other movement in the antenna's field of view. The developed algorithm enables real-time estimation of respiration, heart rate in real world conditions. The sensor system was designed to be a compact detector which can be integrated into portable device for personal healthcare applications. The described sensor system was successfully tested on both simulated target and human subject. The working range was from 3 cm to 250 cm, the mean square error of extracted heart rate is 0.46 compared with ECG results.
{"title":"Real-time remote vital sign detection using a portable Doppler sensor system","authors":"Wei Hu, Haiying Zhang, Zhangyan Zhao, Yunfeng Wang, Xize Wang","doi":"10.1109/SAS.2014.6798923","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798923","url":null,"abstract":"A portable sensor system with signal processing techniques was developed in this paper, aiming to provide remote monitoring of vital signs of human subject. The designed sensor based on microwave Doppler radar enables accurate reconstruction of subject's motion caused by cardiopulmonary activities and other movement in the antenna's field of view. The developed algorithm enables real-time estimation of respiration, heart rate in real world conditions. The sensor system was designed to be a compact detector which can be integrated into portable device for personal healthcare applications. The described sensor system was successfully tested on both simulated target and human subject. The working range was from 3 cm to 250 cm, the mean square error of extracted heart rate is 0.46 compared with ECG results.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126329066","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798952
B. Will, I. Rolfes
Delay time measurements are a powerful method for soil moisture measurements. Besides the well-known time domain reflectometry (TDR), a new method, namely the time domain transmissometry (TDT) captures the market for soil moisture sensors. The key benefit of transmission measurements is their robustness against multiple reflections. However, the development of TDT sensors for measurements inside soils is a challenge due to specific geometric requirements. While transmission measurements are in general performed in two port setups, measurements inside soils require an one port setup. Hence, time domain sensors are in general based on reflection measurements. This contribution describes a soil moisture sensor, which combines the advantages of TDR and TDT measurements regarding the suitability for soil moisture measurements. The sensor consists of a concentric coaxial line assembly resulting in a compact setup. The measuring path is realized as an one-wire line to obtain a large cross sectional area and thus, a large soil sample volume.
{"title":"A miniaturized soil moisture sensor based on time domain transmissometry","authors":"B. Will, I. Rolfes","doi":"10.1109/SAS.2014.6798952","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798952","url":null,"abstract":"Delay time measurements are a powerful method for soil moisture measurements. Besides the well-known time domain reflectometry (TDR), a new method, namely the time domain transmissometry (TDT) captures the market for soil moisture sensors. The key benefit of transmission measurements is their robustness against multiple reflections. However, the development of TDT sensors for measurements inside soils is a challenge due to specific geometric requirements. While transmission measurements are in general performed in two port setups, measurements inside soils require an one port setup. Hence, time domain sensors are in general based on reflection measurements. This contribution describes a soil moisture sensor, which combines the advantages of TDR and TDT measurements regarding the suitability for soil moisture measurements. The sensor consists of a concentric coaxial line assembly resulting in a compact setup. The measuring path is realized as an one-wire line to obtain a large cross sectional area and thus, a large soil sample volume.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125935637","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798979
S. Lo, Jyh-Horng Wu, Lun-Chi Chen, Chien-Hao Tseng, Fang-Pang Lin
This paper proposes a framework for an Image-based Flood Alarm (IFA) that includes bi-seeded region-based image segmentation for the extraction of a water region of interest from an image, as well as an alarm classifier for identifying the degree of flood risk. When the risk reaches the predetermined threshold, a flood response message reports to the main EWS for end-user decision support.
{"title":"Fluvial monitoring and flood response","authors":"S. Lo, Jyh-Horng Wu, Lun-Chi Chen, Chien-Hao Tseng, Fang-Pang Lin","doi":"10.1109/SAS.2014.6798979","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798979","url":null,"abstract":"This paper proposes a framework for an Image-based Flood Alarm (IFA) that includes bi-seeded region-based image segmentation for the extraction of a water region of interest from an image, as well as an alarm classifier for identifying the degree of flood risk. When the risk reaches the predetermined threshold, a flood response message reports to the main EWS for end-user decision support.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124539341","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798934
B. Andò, S. Baglio, C. O. Lombardo, V. Marletta
This paper deals with an advanced multi-sensor approach for the implementation of a tracking system exploiting sensing and processing features embedded in smartphone devices. In particular, a methodology based on advanced data fusion paradigms assuring an efficient heading estimation has been developed. The main advantage of the solution proposed resides in the possibility to correctly perform heading estimation also in the presence of serious environmental influence due to magnetic field distortion. Among possible application contexts, the proposed system would be particularly suitable for the development of mobility assistive systems for a safe and efficient exploration of educational/job environments by weak people.
{"title":"An advanced tracking solution fully based on native sensing features of smartphone","authors":"B. Andò, S. Baglio, C. O. Lombardo, V. Marletta","doi":"10.1109/SAS.2014.6798934","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798934","url":null,"abstract":"This paper deals with an advanced multi-sensor approach for the implementation of a tracking system exploiting sensing and processing features embedded in smartphone devices. In particular, a methodology based on advanced data fusion paradigms assuring an efficient heading estimation has been developed. The main advantage of the solution proposed resides in the possibility to correctly perform heading estimation also in the presence of serious environmental influence due to magnetic field distortion. Among possible application contexts, the proposed system would be particularly suitable for the development of mobility assistive systems for a safe and efficient exploration of educational/job environments by weak people.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130066556","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798963
Rick Pierce, G. S. Gupta
A humanoid robot is being developed for implementing and evaluating dynamic gait algorithms. Force sensors are placed on the bottom of the feet of the robot to provide feedback for the control system. The use of resistive force sensors is being investigated as an inexpensive and lightweight alternative to multi-axis force/torque sensors. However, resistive force sensors have a more limited accuracy and response time. Sensors from three companies have been tested: Sensitronic, Interlink, and Inaba Rubber. The sensors were tested with a TA.XTPlus texture analyzer, which is capable of applying specific forces at different rates. The sensors were tested for repeatability of response, drift, and response time to both application and removal of the force. An inverting op-amp is used to convert the force measurement of the sensor to an output voltage, which is read by an oscilloscope. The force measurements from texture analyzer and the voltage output from the oscilloscope are recorded digitally. The data obtained from the measurements is analyzed and the potential uses and limits of the sensors as feedback mechanisms in a bipedal humanoid robot are discussed.
{"title":"Investigation of force sensors for use in bipedal humanoid dynamic gait generation","authors":"Rick Pierce, G. S. Gupta","doi":"10.1109/SAS.2014.6798963","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798963","url":null,"abstract":"A humanoid robot is being developed for implementing and evaluating dynamic gait algorithms. Force sensors are placed on the bottom of the feet of the robot to provide feedback for the control system. The use of resistive force sensors is being investigated as an inexpensive and lightweight alternative to multi-axis force/torque sensors. However, resistive force sensors have a more limited accuracy and response time. Sensors from three companies have been tested: Sensitronic, Interlink, and Inaba Rubber. The sensors were tested with a TA.XTPlus texture analyzer, which is capable of applying specific forces at different rates. The sensors were tested for repeatability of response, drift, and response time to both application and removal of the force. An inverting op-amp is used to convert the force measurement of the sensor to an output voltage, which is read by an oscilloscope. The force measurements from texture analyzer and the voltage output from the oscilloscope are recorded digitally. The data obtained from the measurements is analyzed and the potential uses and limits of the sensors as feedback mechanisms in a bipedal humanoid robot are discussed.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126002527","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798958
C. Schulz, I. Rolfes
A novel compact plasma sensor applicable for the supervision and control of industrial plasma processes is presented in this contribution. Based on the multipole resonance probe (MRP), the new planar multipole resonance probe (pMRP) flush-mounted into the reactor wall can be used for an effective suppression of disruptions on the plasma process itself. Using 3D-electromagnetic field simulations, the MRP and the pMRP are investigated and compared. Furthermore, limitations concerning position tolerances are shown and the suitability is demonstrated.
{"title":"A new approach on advanced compact plasma sensors for industrial plasma applications","authors":"C. Schulz, I. Rolfes","doi":"10.1109/SAS.2014.6798958","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798958","url":null,"abstract":"A novel compact plasma sensor applicable for the supervision and control of industrial plasma processes is presented in this contribution. Based on the multipole resonance probe (MRP), the new planar multipole resonance probe (pMRP) flush-mounted into the reactor wall can be used for an effective suppression of disruptions on the plasma process itself. Using 3D-electromagnetic field simulations, the MRP and the pMRP are investigated and compared. Furthermore, limitations concerning position tolerances are shown and the suitability is demonstrated.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"315 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133806849","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798939
C. Trigona, F. Giusa, F. Maiorca, A. Noto, B. Andò, S. Baglio
This paper provides an overview of the state of the art and the progress of novel nonlinear behaviors in MEMS devices useful as wide-band vibration energy harvesters, power converters, integrated signal conditioning circuits and filters. Remarkable progress has been made in the field of nonlinear systems and integrated coupled structures, in particular a novel family of device named anti-phase bistable architecture has been developed and patented by authors, here a brief overview will be provided and several aspects, such methodologies and microscale fabrication based on PZT layers, will be exploited.
{"title":"Anti-phase coupled bistable transducers: A review of recent progress","authors":"C. Trigona, F. Giusa, F. Maiorca, A. Noto, B. Andò, S. Baglio","doi":"10.1109/SAS.2014.6798939","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798939","url":null,"abstract":"This paper provides an overview of the state of the art and the progress of novel nonlinear behaviors in MEMS devices useful as wide-band vibration energy harvesters, power converters, integrated signal conditioning circuits and filters. Remarkable progress has been made in the field of nonlinear systems and integrated coupled structures, in particular a novel family of device named anti-phase bistable architecture has been developed and patented by authors, here a brief overview will be provided and several aspects, such methodologies and microscale fabrication based on PZT layers, will be exploited.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116044481","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798921
HyunJune Lyu, Yun Sik Bae, V. Nair, J. Choi
Magnetic sensor chip for measuring biomagnetism is implemented in 0.18μm CMOS technology. The magnetic sensor chip consists of a small-sized high inductance coil sensor and an instrumentation amplifier (IA). The embedded high-inductance coil sensor contains suitable sensitivity and bandwidth for biomagnetic measurements, and is designed via electromagnetic field simulation. A low-gm operational transconductance amplifier is also implemented on the chip to reduce the transconductance value. The output signal sensitivity of the magnetic sensor chip is 3.25 fT/μV, and the output reference noise is 21.1 fT/ Hz. The instrumentation amplifier is designed to minimize the magnetic signal noise using current feedback and a band-pass filter with a bandwidth between 0.5 Hz and 5 kHz. The common-mode rejection ratio is measured at 117.5 dB by the Multi-Project Chip test. The proposed magnetic sensor chip is designed such that the input reference noise is maintained below 0.87 μV.
{"title":"High inductance coil embedded on on-chip magnetic sensor for biomagnetism measurements","authors":"HyunJune Lyu, Yun Sik Bae, V. Nair, J. Choi","doi":"10.1109/SAS.2014.6798921","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798921","url":null,"abstract":"Magnetic sensor chip for measuring biomagnetism is implemented in 0.18μm CMOS technology. The magnetic sensor chip consists of a small-sized high inductance coil sensor and an instrumentation amplifier (IA). The embedded high-inductance coil sensor contains suitable sensitivity and bandwidth for biomagnetic measurements, and is designed via electromagnetic field simulation. A low-gm operational transconductance amplifier is also implemented on the chip to reduce the transconductance value. The output signal sensitivity of the magnetic sensor chip is 3.25 fT/μV, and the output reference noise is 21.1 fT/ Hz. The instrumentation amplifier is designed to minimize the magnetic signal noise using current feedback and a band-pass filter with a bandwidth between 0.5 Hz and 5 kHz. The common-mode rejection ratio is measured at 117.5 dB by the Multi-Project Chip test. The proposed magnetic sensor chip is designed such that the input reference noise is maintained below 0.87 μV.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122746538","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798962
Christopher Scott, G. S. Gupta, Liqiong Tang
Use of bio-metric signals, from muscle and neurons, to build intelligent control systems to mimic human behavior is an important area of active research. Such bio-robotic systems are finding use in rehabilitation and recovery of human organ functions. They also aid in removing the human beings from dangerous and hazardous working conditions. This paper reports the research attempts that have been undertaken to develop a cost-effective bio-driven robotic system for hand amputees, more precisely for wrist disarticulation. The system uses the EMG signals from an amputee's arm to realize a few commonly used finger and hand movements. The developed system is able to obtain the EMG signals through a specifically designed data acquisition and signal processing circuit. A specially designed finger unit has been built and the test model is able to carry out the desired functions of gripping an object. Initial outcomes are very promising and ongoing research will ensure that the entire system will be able to be driven by the amputees using their EMG signals and realize the functions of a selected finger and hand for their everyday activities.
{"title":"Sensing and processing of bio-metric signals for use in low cost bio-robotic systems","authors":"Christopher Scott, G. S. Gupta, Liqiong Tang","doi":"10.1109/SAS.2014.6798962","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798962","url":null,"abstract":"Use of bio-metric signals, from muscle and neurons, to build intelligent control systems to mimic human behavior is an important area of active research. Such bio-robotic systems are finding use in rehabilitation and recovery of human organ functions. They also aid in removing the human beings from dangerous and hazardous working conditions. This paper reports the research attempts that have been undertaken to develop a cost-effective bio-driven robotic system for hand amputees, more precisely for wrist disarticulation. The system uses the EMG signals from an amputee's arm to realize a few commonly used finger and hand movements. The developed system is able to obtain the EMG signals through a specifically designed data acquisition and signal processing circuit. A specially designed finger unit has been built and the test model is able to carry out the desired functions of gripping an object. Initial outcomes are very promising and ongoing research will ensure that the entire system will be able to be driven by the amputees using their EMG signals and realize the functions of a selected finger and hand for their everyday activities.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114974124","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 : 2014-04-17DOI: 10.1109/SAS.2014.6798965
D. Bailey, David Thomas, M. Cho, Said Al-Souti
Cat food manufacturers spend a significant proportion of their research budget on food formulation and palatability. In this paper we propose an efficient and economic method of monitoring cat feeding behaviour during palatability trials. Instrumenting food bowls with load cells measures how much is eaten in each meal, and video records the interaction with the food during meals. Adaptive background subtraction is used to trigger recording, eliminating long periods of animal inactivity and uninteresting video. A single computer is able to monitor and record 4 cages simultaneously at 25 frames per second.
{"title":"Automating monitoring of cat feeding behaviour","authors":"D. Bailey, David Thomas, M. Cho, Said Al-Souti","doi":"10.1109/SAS.2014.6798965","DOIUrl":"https://doi.org/10.1109/SAS.2014.6798965","url":null,"abstract":"Cat food manufacturers spend a significant proportion of their research budget on food formulation and palatability. In this paper we propose an efficient and economic method of monitoring cat feeding behaviour during palatability trials. Instrumenting food bowls with load cells measures how much is eaten in each meal, and video records the interaction with the food during meals. Adaptive background subtraction is used to trigger recording, eliminating long periods of animal inactivity and uninteresting video. A single computer is able to monitor and record 4 cages simultaneously at 25 frames per second.","PeriodicalId":125872,"journal":{"name":"2014 IEEE Sensors Applications Symposium (SAS)","volume":"399 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132138740","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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