Pub Date : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445571
Heng Zhao, Hong Hong, Yusheng Li, L. Sun, Xiaohua Zhu
Aiming at detecting the instantaneous vital sign frequencies, which are very important to the clinical diagnosis and treatment, a novel method based on synchrosqueezing transform (SST) is applied to the low-power digital-IF non-contact vital sign detection system. The proposed technique reallocates the coefficients resulting from a wavelet transform to get a concentrated picture over the time-frequency plane, from which the instantaneous frequencies can be extracted. Through experiment and direct comparison with contact sensors, the instantaneous respiratory and heartbeat frequencies can be accurately obtained by the proposed method.
{"title":"Low-power digital-IF noncontact instantaneous vital sign detection based on synchrosqueezing transform","authors":"Heng Zhao, Hong Hong, Yusheng Li, L. Sun, Xiaohua Zhu","doi":"10.1109/BIOWIRELESS.2016.7445571","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445571","url":null,"abstract":"Aiming at detecting the instantaneous vital sign frequencies, which are very important to the clinical diagnosis and treatment, a novel method based on synchrosqueezing transform (SST) is applied to the low-power digital-IF non-contact vital sign detection system. The proposed technique reallocates the coefficients resulting from a wavelet transform to get a concentrated picture over the time-frequency plane, from which the instantaneous frequencies can be extracted. Through experiment and direct comparison with contact sensors, the instantaneous respiratory and heartbeat frequencies can be accurately obtained by the proposed method.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129448062","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445570
I. Mahbub, S. Islam, A. Fathy
This paper presents a fully integrated (on-off keying) impulse radio ultra-wideband (IR-UWB) transmitter suitable for low-power wireless biomedical sensors. The transmitter operates at 3-5 GHz frequency range with a channel bandwidth of ~2GHz. Implemented in a standard 130-nm CMOS process the proposed transmitter follows on/-off keying (OOK) modulation scheme and consumes an average power of 496 μW with 1.2 V supply voltage. Simulation results show that the pulse duration is 3.5ns and the peak amplitude of the power spectrum is -46.8 dBm/MHz and which fully complies with the FCC spectral mask.
{"title":"Impulse radio ultra-wideband (IR-UWB) transmitter for low power low data rate biomedical sensor applications","authors":"I. Mahbub, S. Islam, A. Fathy","doi":"10.1109/BIOWIRELESS.2016.7445570","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445570","url":null,"abstract":"This paper presents a fully integrated (on-off keying) impulse radio ultra-wideband (IR-UWB) transmitter suitable for low-power wireless biomedical sensors. The transmitter operates at 3-5 GHz frequency range with a channel bandwidth of ~2GHz. Implemented in a standard 130-nm CMOS process the proposed transmitter follows on/-off keying (OOK) modulation scheme and consumes an average power of 496 μW with 1.2 V supply voltage. Simulation results show that the pulse duration is 3.5ns and the peak amplitude of the power spectrum is -46.8 dBm/MHz and which fully complies with the FCC spectral mask.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123784618","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445554
M. Mercuri, P. Karsmakers, B. Vanrumste, P. Leroux, D. Schreurs
In this work a biomedical wireless radar sensor network (BWRSN), enabling concurrent fall detection and vital signs monitoring, is presented and described. The proposed architecture is intended for indoor applications as a potential ambient assisted living (AAL) technology. Experimental results, conducted in a real room setting with human subjects, demonstrate the need for a wireless sensor network for the targeted application.
{"title":"Biomedical wireless radar sensor network for indoor emergency situations detection and vital signs monitoring","authors":"M. Mercuri, P. Karsmakers, B. Vanrumste, P. Leroux, D. Schreurs","doi":"10.1109/BIOWIRELESS.2016.7445554","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445554","url":null,"abstract":"In this work a biomedical wireless radar sensor network (BWRSN), enabling concurrent fall detection and vital signs monitoring, is presented and described. The proposed architecture is intended for indoor applications as a potential ambient assisted living (AAL) technology. Experimental results, conducted in a real room setting with human subjects, demonstrate the need for a wireless sensor network for the targeted application.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125156888","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445545
W. Shi, Jeffrey Mays, J. Chiao
Wireless stethoscopes are convenient for continuous patient monitoring. This paper presents a new method of analyzing acoustic properties of the heart and lung sounds using a wearable wireless stethoscope. Cardiac action parameters were extracted from the recorded digitized heart sound and analyzed. The cardiac pulse and lung sound parameters can provide detailed insights into cardiac and breathing actions. Hardware implementation of the wireless stethoscope is presented. Recorded heart and lung sounds were transmitted wirelessly to a receiver module connected to a computer. The data passed through a digital filter and normalized by amplitude scaling. The processed results were shown in the time, frequency, and time-frequency domains. The S1 and S2 acoustic properties were analyzed in details. The system aims as an electronic wearable for continuous medical diagnosis.
{"title":"Wireless stethoscope for recording heart and lung sound","authors":"W. Shi, Jeffrey Mays, J. Chiao","doi":"10.1109/BIOWIRELESS.2016.7445545","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445545","url":null,"abstract":"Wireless stethoscopes are convenient for continuous patient monitoring. This paper presents a new method of analyzing acoustic properties of the heart and lung sounds using a wearable wireless stethoscope. Cardiac action parameters were extracted from the recorded digitized heart sound and analyzed. The cardiac pulse and lung sound parameters can provide detailed insights into cardiac and breathing actions. Hardware implementation of the wireless stethoscope is presented. Recorded heart and lung sounds were transmitted wirelessly to a receiver module connected to a computer. The data passed through a digital filter and normalized by amplitude scaling. The processed results were shown in the time, frequency, and time-frequency domains. The S1 and S2 acoustic properties were analyzed in details. The system aims as an electronic wearable for continuous medical diagnosis.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"738 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131734005","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445559
A. Lee, R. Wang, A. Farajidavar
We have developed a wireless system suitable for acquiring gastric slow wave activities and delivering electrical pulses to the stomach. The system is composed of a physically miniaturized front-end that can record slow waves from 3 channels and transmit the data to a back-end connected to a computer. A custom-made graphical user interface can display the slow waves in real-time and store them for off-line analysis. The user can turn on a switch on the back-end to activate electrical stimulation capability on the front-end. The electrical stimulation on the front-end is fixed at 4 mA with a pulse width of 300 ms. The front-end measures 13×44×4 mm3, allowing future implantation. The system performance was successful in bench-top testing and will be validated in animal models.
{"title":"A wireless system for gastric slow wave acquisition and gastric electrical stimulation","authors":"A. Lee, R. Wang, A. Farajidavar","doi":"10.1109/BIOWIRELESS.2016.7445559","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445559","url":null,"abstract":"We have developed a wireless system suitable for acquiring gastric slow wave activities and delivering electrical pulses to the stomach. The system is composed of a physically miniaturized front-end that can record slow waves from 3 channels and transmit the data to a back-end connected to a computer. A custom-made graphical user interface can display the slow waves in real-time and store them for off-line analysis. The user can turn on a switch on the back-end to activate electrical stimulation capability on the front-end. The electrical stimulation on the front-end is fixed at 4 mA with a pulse width of 300 ms. The front-end measures 13×44×4 mm3, allowing future implantation. The system performance was successful in bench-top testing and will be validated in animal models.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114200253","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445555
Zhengyu Peng, J. Muñoz-Ferreras, Yao Tang, R. Gómez‐García, Changzhi Li
Radar-based human tracking can be applied to indoor healthcare scenarios, such as fall detection of elderly people. In this work, a portable frequency-modulated continuous-wave (FMCW) radar prototype for indoor human tracking is presented. The system provides absolute-range detection capabilities. Furthermore, it uses a novel approach - not requiring the sharing of the generation and acquisition clocks - to possess the highly-desired coherence feature, which enables the preservation of the phase history of targets. As a result, videos of inverse synthetic aperture radar (ISAR) images - i.e., videos of range-Doppler frames - can be reconstructed. Experimental results for a walking person in a highly-cluttered indoor environment confirm the suitability of the low-cost radar prototype for indoor healthcare applications.
{"title":"Portable coherent frequency-modulated continuous-wave radar for indoor human tracking","authors":"Zhengyu Peng, J. Muñoz-Ferreras, Yao Tang, R. Gómez‐García, Changzhi Li","doi":"10.1109/BIOWIRELESS.2016.7445555","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445555","url":null,"abstract":"Radar-based human tracking can be applied to indoor healthcare scenarios, such as fall detection of elderly people. In this work, a portable frequency-modulated continuous-wave (FMCW) radar prototype for indoor human tracking is presented. The system provides absolute-range detection capabilities. Furthermore, it uses a novel approach - not requiring the sharing of the generation and acquisition clocks - to possess the highly-desired coherence feature, which enables the preservation of the phase history of targets. As a result, videos of inverse synthetic aperture radar (ISAR) images - i.e., videos of range-Doppler frames - can be reconstructed. Experimental results for a walking person in a highly-cluttered indoor environment confirm the suitability of the low-cost radar prototype for indoor healthcare applications.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123161119","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445568
W. Chen, D. Dubuc, K. Grenier
This paper focuses on evaluating the impact of metal thickness of a microwave coplanar based sensor dedicated to the microwave dielectric spectroscopy of single particles and individual biological cells. A sensitivity study has therefore been achieved for metal thicknesses comprised between 0.3 and 20 μm. After the validation of electromagnetic simulations with measurements of 10 μ m-diameter polystyrene bead, both capacitive and conductive contrasts have been defined for the different metal thickness of the sensor. The maximal sensitivity improvement is therefore achieved for a thickness value similar to the diameter of the particle or cell to measure. Capacitive and conductive contrasts are increased by a factor 2.4 and 1.75 respectively. The study leads consequently to an important design and fabrication rule of such a sensor.
{"title":"Impact of sensor metal thickness on microwave spectroscopy sensitivity for individual particles and biological cells analysis","authors":"W. Chen, D. Dubuc, K. Grenier","doi":"10.1109/BIOWIRELESS.2016.7445568","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445568","url":null,"abstract":"This paper focuses on evaluating the impact of metal thickness of a microwave coplanar based sensor dedicated to the microwave dielectric spectroscopy of single particles and individual biological cells. A sensitivity study has therefore been achieved for metal thicknesses comprised between 0.3 and 20 μm. After the validation of electromagnetic simulations with measurements of 10 μ m-diameter polystyrene bead, both capacitive and conductive contrasts have been defined for the different metal thickness of the sensor. The maximal sensitivity improvement is therefore achieved for a thickness value similar to the diameter of the particle or cell to measure. Capacitive and conductive contrasts are increased by a factor 2.4 and 1.75 respectively. The study leads consequently to an important design and fabrication rule of such a sensor.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117239879","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445551
J. Muñoz-Ferreras, Zhengyu Peng, R. Gómez‐García, Changzhi Li
In noncontact vital-sign-monitoring applications, the cancelation of the random body movement (RBM) becomes critical for a proper tracking. When using Doppler radars, this RBM suppression has been typically carried out through phase measurements obtained from two opposite sides of the human body. In this work, the employment of two frequency-modulated continuous-wave (FMCW) radars to deal with the RBM phenomenon is proposed. An advanced range-bin alignment technique is utilized to derive the range histories from the two transceivers and proceed with the RBM mitigation. Moreover, since this approach is only based on the signal amplitudes, the FMCW radar sensors do not need to be coherent. Simulated results are also reported to corroborate the effectiveness of the devised RBM suppression technique.
{"title":"Random body movement mitigation for FMCW-radar-based vital-sign monitoring","authors":"J. Muñoz-Ferreras, Zhengyu Peng, R. Gómez‐García, Changzhi Li","doi":"10.1109/BIOWIRELESS.2016.7445551","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445551","url":null,"abstract":"In noncontact vital-sign-monitoring applications, the cancelation of the random body movement (RBM) becomes critical for a proper tracking. When using Doppler radars, this RBM suppression has been typically carried out through phase measurements obtained from two opposite sides of the human body. In this work, the employment of two frequency-modulated continuous-wave (FMCW) radars to deal with the RBM phenomenon is proposed. An advanced range-bin alignment technique is utilized to derive the range histories from the two transceivers and proceed with the RBM mitigation. Moreover, since this approach is only based on the signal amplitudes, the FMCW radar sensors do not need to be coherent. Simulated results are also reported to corroborate the effectiveness of the devised RBM suppression technique.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128235010","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 : 1900-01-01DOI: 10.1109/BIOWIRELESS.2016.7445561
Feiyan Lin, S. Yao, M. McKnight, Yong Zhu, A. Bozkurt
We present multifunctional sensors based on highly stretchable silver nanowire conductors, which can be conformally attached to human skin for multimodal sensing. The wearable sensors were integrated with an interface circuit with wireless capability in the form of a chest patch. The capabilities of electrocardiography, strain/motion sensing and skin impedance sensing were demonstrated. Additionally, the impedance sensor with the interface circuit was packaged into a wrist watch for skin impedance monitoring.
{"title":"Silver nanowire based wearable sensors for multimodal sensing","authors":"Feiyan Lin, S. Yao, M. McKnight, Yong Zhu, A. Bozkurt","doi":"10.1109/BIOWIRELESS.2016.7445561","DOIUrl":"https://doi.org/10.1109/BIOWIRELESS.2016.7445561","url":null,"abstract":"We present multifunctional sensors based on highly stretchable silver nanowire conductors, which can be conformally attached to human skin for multimodal sensing. The wearable sensors were integrated with an interface circuit with wireless capability in the form of a chest patch. The capabilities of electrocardiography, strain/motion sensing and skin impedance sensing were demonstrated. Additionally, the impedance sensor with the interface circuit was packaged into a wrist watch for skin impedance monitoring.","PeriodicalId":154090,"journal":{"name":"2016 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems (BioWireleSS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123143987","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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