Pub Date : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967207
Sakthidasan Kalidasan, C. Ghosh, A. Deshpande, C. Mastrangelo, Ross Walker
In this paper, we present the characterization of a new range sensing approach for use in emerging smart contact lens applications. Smart contact lenses offer a promising approach to treating the most common form of vision loss by using a tunable lens to accommodate for focal errors. A range sensor is an integral component of the system because it estimates an object's distance from the user in order to determine the target focal length. We performed an empirical study with custom fabricated coils in a mock eyeball setup to understand the energy-accuracy trade-offs of a burst-mode sensing approach based on transmission and reception of square pulses between the coils. We wirelessly transmitted square pulses between the coils and estimated the range of an object by sensing the received voltages and inferring the angular relationship between the two contacts. We demonstrate a functioning range sensing approach that can be implemented with energy as low as 1.8 nJ per measurement with at least 95% accuracy.
{"title":"Energy and Accuracy Characterization of a Burst-Mode Range Sensing Approach for Smart Contact Lenses","authors":"Sakthidasan Kalidasan, C. Ghosh, A. Deshpande, C. Mastrangelo, Ross Walker","doi":"10.1109/SENSORS52175.2022.9967207","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967207","url":null,"abstract":"In this paper, we present the characterization of a new range sensing approach for use in emerging smart contact lens applications. Smart contact lenses offer a promising approach to treating the most common form of vision loss by using a tunable lens to accommodate for focal errors. A range sensor is an integral component of the system because it estimates an object's distance from the user in order to determine the target focal length. We performed an empirical study with custom fabricated coils in a mock eyeball setup to understand the energy-accuracy trade-offs of a burst-mode sensing approach based on transmission and reception of square pulses between the coils. We wirelessly transmitted square pulses between the coils and estimated the range of an object by sensing the received voltages and inferring the angular relationship between the two contacts. We demonstrate a functioning range sensing approach that can be implemented with energy as low as 1.8 nJ per measurement with at least 95% accuracy.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114983362","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967100
Joon Soo Park, Liben Chen, Tza-Huei Wang
Polymerase chain reaction (PCR) is the most commonly used method for nucleic acid amplification due to its ability to detect trace levels of target molecules. However, the development of multiplexed PCR assays has been limited by the complexity of the assay derived from the use of multiple primer/probe sequences as well as the limited number of fluorescence colors. Herein, we describe a digital Ligation-eNabled fluorescence-Coding PCR (dLiNC PCR) that achieves high-dimensional multiplex nucleic acid detection by employing standard digital TaqMan PCR with a pair of universal primers/probes. The proposed assay relies upon a simple preliminary ligation reaction that encodes each target molecule with a distinct fluorescence signature. Target-specific end-point fluorescence signals generated by subsequent digital TaqMan PCR can be readily used to identify multiple targets of interest. We demonstrate the dLiNC PCR by detecting 10 ovarian cancer epigenetic biomarkers at analytical sensitivity as low as 1 aM using only two fluorescence colors. We foresee that the multiplexing capability of the dLiNC PCR can be further enhanced by expanding the number of fluorescence colors as well as a simple modification of oligonucleotide design.
{"title":"Digital Ligation-Enabled Fluorescence-Coding PCR (dLiNC PCR) for High-Dimensional Multiplexed Nucleic Acid Detection","authors":"Joon Soo Park, Liben Chen, Tza-Huei Wang","doi":"10.1109/SENSORS52175.2022.9967100","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967100","url":null,"abstract":"Polymerase chain reaction (PCR) is the most commonly used method for nucleic acid amplification due to its ability to detect trace levels of target molecules. However, the development of multiplexed PCR assays has been limited by the complexity of the assay derived from the use of multiple primer/probe sequences as well as the limited number of fluorescence colors. Herein, we describe a digital Ligation-eNabled fluorescence-Coding PCR (dLiNC PCR) that achieves high-dimensional multiplex nucleic acid detection by employing standard digital TaqMan PCR with a pair of universal primers/probes. The proposed assay relies upon a simple preliminary ligation reaction that encodes each target molecule with a distinct fluorescence signature. Target-specific end-point fluorescence signals generated by subsequent digital TaqMan PCR can be readily used to identify multiple targets of interest. We demonstrate the dLiNC PCR by detecting 10 ovarian cancer epigenetic biomarkers at analytical sensitivity as low as 1 aM using only two fluorescence colors. We foresee that the multiplexing capability of the dLiNC PCR can be further enhanced by expanding the number of fluorescence colors as well as a simple modification of oligonucleotide design.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115435544","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967172
Piyush Agade, E. Bean, R. Dean, David M. Blersch, Jose Vasconscelos, T. Knappenberger, E. Brantley
Currently, many available water resource monitoring systems and data loggers can be cost-prohibitive and are limited in spatial scale. These systems are frequently deployable as unattended stations or used as a handheld device. Hence, locating pollutant sources is difficult and relies on inference and watershed modeling. GatorByte is a mobile water-quality monitoring platform for collecting spatiotemporal water quality data. The GatorByte platform includes a data logger, a cloud-based server, and visualization tools. It uses low-cost sensors, components, a 3D-printed enclosure, and a Printed Circuit Board. The data logger uses a 4G-capable Arduino for real-time reporting of the sensor data. Currently, the GatorByte houses sensors for measuring pH, temperature, dissolved oxygen, and electroconductivity. The data logger also includes micro-SD storage and a Bluetooth module for on-field diagnostics. The buoy includes a GPS module for recording the location for every set of sensor readings and tracking the buoy in real-time. Using GatorByte, recording of variations in water quality data in both temporal and spatial dimensions can be achieved in a cost-effective and reliable manner, enabling quick detection and resolution of pollution events.
{"title":"GatorByte: A Water-Quality Mapping Buoy for Locating Watershed Pollution Sources","authors":"Piyush Agade, E. Bean, R. Dean, David M. Blersch, Jose Vasconscelos, T. Knappenberger, E. Brantley","doi":"10.1109/SENSORS52175.2022.9967172","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967172","url":null,"abstract":"Currently, many available water resource monitoring systems and data loggers can be cost-prohibitive and are limited in spatial scale. These systems are frequently deployable as unattended stations or used as a handheld device. Hence, locating pollutant sources is difficult and relies on inference and watershed modeling. GatorByte is a mobile water-quality monitoring platform for collecting spatiotemporal water quality data. The GatorByte platform includes a data logger, a cloud-based server, and visualization tools. It uses low-cost sensors, components, a 3D-printed enclosure, and a Printed Circuit Board. The data logger uses a 4G-capable Arduino for real-time reporting of the sensor data. Currently, the GatorByte houses sensors for measuring pH, temperature, dissolved oxygen, and electroconductivity. The data logger also includes micro-SD storage and a Bluetooth module for on-field diagnostics. The buoy includes a GPS module for recording the location for every set of sensor readings and tracking the buoy in real-time. Using GatorByte, recording of variations in water quality data in both temporal and spatial dimensions can be achieved in a cost-effective and reliable manner, enabling quick detection and resolution of pollution events.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"311 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124423097","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967176
Steffen Kastner, Markus Ebner, Markus Bullmann, Toni Fetzer, F. Deinzer, M. Grzegorzek
In the realm of indoor localization Bluetooth and Wi-Fi signal strength based ranging approaches are well established. Also, some methods based on signal propagation time are used to determine the distance between an access point and a device. These methods work well at medium to long distances and in line-of-sight, but the provided accuracy of a few meters is too inaccurate for short distances below two meters. In order to introduce a better localization method for short distances, that is only infinitesimally affected by non-ferrous materials, a novel magnetic signature sensor approach is presented. The static part of the system consists of at least two alternating current coils to excite an alternating magnetic field. The dynamic part leverages the magnetometer hardware, found in most smartphones, to measure the coil's magnetic field sampled at a fixed frequency. Further, an automatic set-up method of the system is described, where the measuring device only needs to be moved in between the coils.
{"title":"Magnetic Signature Sensor Model for Accurate Short-Distance Localization","authors":"Steffen Kastner, Markus Ebner, Markus Bullmann, Toni Fetzer, F. Deinzer, M. Grzegorzek","doi":"10.1109/SENSORS52175.2022.9967176","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967176","url":null,"abstract":"In the realm of indoor localization Bluetooth and Wi-Fi signal strength based ranging approaches are well established. Also, some methods based on signal propagation time are used to determine the distance between an access point and a device. These methods work well at medium to long distances and in line-of-sight, but the provided accuracy of a few meters is too inaccurate for short distances below two meters. In order to introduce a better localization method for short distances, that is only infinitesimally affected by non-ferrous materials, a novel magnetic signature sensor approach is presented. The static part of the system consists of at least two alternating current coils to excite an alternating magnetic field. The dynamic part leverages the magnetometer hardware, found in most smartphones, to measure the coil's magnetic field sampled at a fixed frequency. Further, an automatic set-up method of the system is described, where the measuring device only needs to be moved in between the coils.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124425306","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9966999
S. Ahmadi, D. Maddipatla, Qingliu Wu, M. Atashbar
Several printing techniques have been developed so far to fabricate advanced electrode structures with different 3D patterns for lithium ion batteries (LIB) applications. Making channels along the thickness of the electrode has been proved to be effective on energy density enhancement of LIBs by reducing the overall tortuosity in the electrode and improving the ionic diffusion along the electrode thickness, especially under fast charging conditions. In this paper, a 3D physics-based electrochemical model of Graphite/NMC (nickel, manganese, and cobalt) full-cell is developed in COMSOL software. The designed electrodes have cylindrical channels in both anode and cathode. The impact of channels on volumetric energy density of electrodes with different thickness and porosity under high current rate of 6 is investigated. The simulation results demonstrated that compared to reference cell with no channels, the patterned cell with similar mass loading is capable of increasing volumetric energy density by more than 2 times. The impact of electrode properties such as porosity, thickness, and cathode to anode thickness ratio is investigated and showed that the channels are more effective on improving energy density of thick electrodes with low porosities when compared to thin or highly porous electrodes with similar mass loading.
{"title":"Investigating the Impact of Thickness and Porosity on Energy Density of Screen Printed Graphite/NMC LIBs with 3D Structures under Fast Charging Condition","authors":"S. Ahmadi, D. Maddipatla, Qingliu Wu, M. Atashbar","doi":"10.1109/SENSORS52175.2022.9966999","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9966999","url":null,"abstract":"Several printing techniques have been developed so far to fabricate advanced electrode structures with different 3D patterns for lithium ion batteries (LIB) applications. Making channels along the thickness of the electrode has been proved to be effective on energy density enhancement of LIBs by reducing the overall tortuosity in the electrode and improving the ionic diffusion along the electrode thickness, especially under fast charging conditions. In this paper, a 3D physics-based electrochemical model of Graphite/NMC (nickel, manganese, and cobalt) full-cell is developed in COMSOL software. The designed electrodes have cylindrical channels in both anode and cathode. The impact of channels on volumetric energy density of electrodes with different thickness and porosity under high current rate of 6 is investigated. The simulation results demonstrated that compared to reference cell with no channels, the patterned cell with similar mass loading is capable of increasing volumetric energy density by more than 2 times. The impact of electrode properties such as porosity, thickness, and cathode to anode thickness ratio is investigated and showed that the channels are more effective on improving energy density of thick electrodes with low porosities when compared to thin or highly porous electrodes with similar mass loading.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124425666","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967226
Yaneev Hacohen, S. Majerus
This work demonstrates a batteryless, implantable blood-flow sensor with RFID readout. This flexible sensor system was developed specifically for surgical implantation around blood vessels, without contacting blood to improve sensor stability. An RFID data/power antenna was implemented using a split-double helix antenna (DHA) to enable surgical placement around a tubular structure in the body, e.g. a natural or synthetic blood vessel. A flexible pulsation sensor (FPS) was developed from a piezoresistive carbon black-polydimethylsiloxane (PDMS) nanocomposite, which enabled measurement of vascular distension caused by blood flow. A commercial RFID chip enabled sensor readout to an external transceiver in real time with a sample rate of 12 Hz and reading distance of 3.5 cm. DHAs with diameter of 3–8 mm were fabricated and had modest quality factors of 9 - 23. Prototype implantable DHA antennas were developed to wrap around vessels of 3 to 8 mm. Validation experiments on a vascular phantom with simulated stenosis demonstrated blood flow rate monitoring from 200 - 400 mL/min with the capacity to distinguish flow changes as low as 10 mL/min.
{"title":"An RFID-Based Sensor for Vascular Flow Monitoring","authors":"Yaneev Hacohen, S. Majerus","doi":"10.1109/SENSORS52175.2022.9967226","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967226","url":null,"abstract":"This work demonstrates a batteryless, implantable blood-flow sensor with RFID readout. This flexible sensor system was developed specifically for surgical implantation around blood vessels, without contacting blood to improve sensor stability. An RFID data/power antenna was implemented using a split-double helix antenna (DHA) to enable surgical placement around a tubular structure in the body, e.g. a natural or synthetic blood vessel. A flexible pulsation sensor (FPS) was developed from a piezoresistive carbon black-polydimethylsiloxane (PDMS) nanocomposite, which enabled measurement of vascular distension caused by blood flow. A commercial RFID chip enabled sensor readout to an external transceiver in real time with a sample rate of 12 Hz and reading distance of 3.5 cm. DHAs with diameter of 3–8 mm were fabricated and had modest quality factors of 9 - 23. Prototype implantable DHA antennas were developed to wrap around vessels of 3 to 8 mm. Validation experiments on a vascular phantom with simulated stenosis demonstrated blood flow rate monitoring from 200 - 400 mL/min with the capacity to distinguish flow changes as low as 10 mL/min.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127156372","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967235
I. Khokhlov, Sergei Chuprov, L. Reznik
This paper presents a novel approach of integrating sensor accuracy and sensor platform security in overall sensor system evaluation and presents a new developed method and a software tool that are designed to assist the sensor community in assessing the security aspect of complex sensor platforms such as smartphones. We recommend conducting sensor platform security evaluation along with the accuracy estimation and employing them together while designing sensor fusion. We developed a mobile platform's security evaluation tool, which we describe in this paper, and encourage its application in this process. Also, we describe a use case that shows how sensors fusion may affect not only sensor accuracy but also data security in practice. By introducing security into sensor system design at the earlier stage, we try to bridge sensor accuracy and security evaluation.
{"title":"Integrating Security with Accuracy Evaluation in Sensors Fusion","authors":"I. Khokhlov, Sergei Chuprov, L. Reznik","doi":"10.1109/SENSORS52175.2022.9967235","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967235","url":null,"abstract":"This paper presents a novel approach of integrating sensor accuracy and sensor platform security in overall sensor system evaluation and presents a new developed method and a software tool that are designed to assist the sensor community in assessing the security aspect of complex sensor platforms such as smartphones. We recommend conducting sensor platform security evaluation along with the accuracy estimation and employing them together while designing sensor fusion. We developed a mobile platform's security evaluation tool, which we describe in this paper, and encourage its application in this process. Also, we describe a use case that shows how sensors fusion may affect not only sensor accuracy but also data security in practice. By introducing security into sensor system design at the earlier stage, we try to bridge sensor accuracy and security evaluation.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127325260","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967054
Samir-Sharif El Rhaz, A. Courtay, Anthony Hue, O. Berder
Addressing wireless connectivity of infrasound sensor arrays in a continuous sensing operating scheme is a challenging task regarding channel capacity, legal limitations on ISM bands and required ranges. A decrease of the system throughput appears necessary. This paper discusses key trades on data radio transmission considering measurement constraints. We propose a self-noise analysis of a measurement system at the design stage. We demonstrate that an optimization of the samples resolution is possible, based on the effective number of bits of the system, achieving up to 20% reduction of the payload to transmit.
{"title":"Data Resolution Optimisation to Address Wireless Connectivity in Infrasound Measurement Systems","authors":"Samir-Sharif El Rhaz, A. Courtay, Anthony Hue, O. Berder","doi":"10.1109/SENSORS52175.2022.9967054","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967054","url":null,"abstract":"Addressing wireless connectivity of infrasound sensor arrays in a continuous sensing operating scheme is a challenging task regarding channel capacity, legal limitations on ISM bands and required ranges. A decrease of the system throughput appears necessary. This paper discusses key trades on data radio transmission considering measurement constraints. We propose a self-noise analysis of a measurement system at the design stage. We demonstrate that an optimization of the samples resolution is possible, based on the effective number of bits of the system, achieving up to 20% reduction of the payload to transmit.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124978640","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967306
S. M. Rasid, A. Michael, H. Pota, Ssu-Han Chen
The fast micro-lens actuator used in portable micro-optics devices needs an integrated sensing mechanism for feedback control. This paper presents the design and implementation of a readout circuit using a charge amplifier for the piezoelectric micro-lens actuator. The designed circuit captures the small vibration of the piezoelectric actuator by measuring the charge generated due to the mechanical motion of the piezoelectric beam. The performance of the designed readout circuit is evaluated by comparing the measured readout circuit output with an optical sensor. The obtained open-loop settling time and signal-to-noise ratio for the piezoelectric micro-lens actuator are 120 ms and 30 dB, respectively, similar to the optical sensors. Experimentally measured results demonstrate that the on-chip self-sensing piezoelectric layer can replace the off-chip bulky optical sensor to provide a feedback signal for the closed-loop control of the piezoelectric micro-lens actuator, which is necessary for compact, handheld, and portable devices.
{"title":"Self-sensing Piezoelectric Micro-lens Actuator","authors":"S. M. Rasid, A. Michael, H. Pota, Ssu-Han Chen","doi":"10.1109/SENSORS52175.2022.9967306","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967306","url":null,"abstract":"The fast micro-lens actuator used in portable micro-optics devices needs an integrated sensing mechanism for feedback control. This paper presents the design and implementation of a readout circuit using a charge amplifier for the piezoelectric micro-lens actuator. The designed circuit captures the small vibration of the piezoelectric actuator by measuring the charge generated due to the mechanical motion of the piezoelectric beam. The performance of the designed readout circuit is evaluated by comparing the measured readout circuit output with an optical sensor. The obtained open-loop settling time and signal-to-noise ratio for the piezoelectric micro-lens actuator are 120 ms and 30 dB, respectively, similar to the optical sensors. Experimentally measured results demonstrate that the on-chip self-sensing piezoelectric layer can replace the off-chip bulky optical sensor to provide a feedback signal for the closed-loop control of the piezoelectric micro-lens actuator, which is necessary for compact, handheld, and portable devices.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126137414","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 : 2022-10-30DOI: 10.1109/SENSORS52175.2022.9967255
Renjie Wu, M. Pike, X. Chai, Boon-Giin Lee, X. Wu
Indoor Location-Based Service (ILBS) shows great research promotions with wide applications e.g., indoor firefighting and cave exploration. Foot-mounted Inertial Navigation System (INS), one approach of ILBS, lacks a reference map of the environment, resulting in poor trajectory recognition. This paper introduces SLAMING, a novel wearable type SLAM via a Zero Angular rate Update (ZARU) aided Inertial NaviGation. SLAMING proposes a gravity center calculation method, merging the dual (left and right) foot trajectories. Moreover, the proposed polar projection and occupancy grid map method determines the map boundary, enabling the fusion of the trajectory and ultrasound range. The mapping results of SLAMING are demonstrated with the ground truth. The location performance is validated using a self-created database, the results of which indicate lower horizontal and spherical error compared with the traditional INS in all scenarios.
{"title":"SLAM-ING: A Wearable SLAM Inertial NaviGation System","authors":"Renjie Wu, M. Pike, X. Chai, Boon-Giin Lee, X. Wu","doi":"10.1109/SENSORS52175.2022.9967255","DOIUrl":"https://doi.org/10.1109/SENSORS52175.2022.9967255","url":null,"abstract":"Indoor Location-Based Service (ILBS) shows great research promotions with wide applications e.g., indoor firefighting and cave exploration. Foot-mounted Inertial Navigation System (INS), one approach of ILBS, lacks a reference map of the environment, resulting in poor trajectory recognition. This paper introduces SLAMING, a novel wearable type SLAM via a Zero Angular rate Update (ZARU) aided Inertial NaviGation. SLAMING proposes a gravity center calculation method, merging the dual (left and right) foot trajectories. Moreover, the proposed polar projection and occupancy grid map method determines the map boundary, enabling the fusion of the trajectory and ultrasound range. The mapping results of SLAMING are demonstrated with the ground truth. The location performance is validated using a self-created database, the results of which indicate lower horizontal and spherical error compared with the traditional INS in all scenarios.","PeriodicalId":120357,"journal":{"name":"2022 IEEE Sensors","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851771","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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