 Subjects -> INSTRUMENTS (Total: 63 journals)
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- Near-infrared LED system to recognize road surface conditions for
autonomous vehicles
Abstract: Near-infrared LED system to recognize road surface conditions for autonomous vehicles
Hongyi Zhang, Shéhérazade Azouigui, Rabia Sehab, and Moussa Boukhnifer
J. Sens. Sens. Syst., 11, 187–199, https://doi.org/10.5194/jsss-11-187-2022, 2022
In this paper, a near-infrared LED system is proposed for autonomous vehicles to distinguish between weather-induced road surface conditions (dry, wet, snow, ice, water). For the LED spectra, the influence of the LED bandwidth is investigated. To assess the performance of the system for a long detection range, experiments with large incident angles are conducted. The feasibility of this system is proved via a laboratory experiment with three near-infrared LEDs and a camera.
PubDate: Wed, 29 Jun 2022 12:54:39 +020
DOI: 10.5194/jsss-11-187-2022 2022
- Acceptance and reverification testing for industrial computed tomography
– a simulative study on geometrical misalignments
Abstract: Acceptance and reverification testing for industrial computed tomography – a simulative study on geometrical misalignments
Florian Wohlgemuth, Tino Hausotte, Ingomar Schmidt, Wolfgang Kimmig, and Karl Dietrich Imkamp
J. Sens. Sens. Syst., 11, 171–186, https://doi.org/10.5194/jsss-11-171-2022, 2022
Acceptance and reverification testing for industrial CT systems is described in different standards. The characterisation and testing of CT system performance are often achieved with test artefacts containing spheres. This simulative study characterises the influence of different geometrical error sources – or geometrical misalignments – on these sphere measurements.
PubDate: Thu, 16 Jun 2022 06:19:40 +020
DOI: 10.5194/jsss-11-171-2022 2022
- Precise characterization of VCSEL in the 1550 nm band having a
wavelength tuning range of 12 nm within 10 µs as light sources for
fast sensor systems
Abstract: Precise characterization of VCSEL in the 1550 nm band having a wavelength tuning range of 12 nm within 10 µs as light sources for fast sensor systems
Roman Kruglov, Gregor Saur, and Rainer Engelbrecht
J. Sens. Sens. Syst., 11, 161–169, https://doi.org/10.5194/jsss-11-161-2022, 2022
Gas analysis by absorption spectroscopy helps to optimize combustion processes in engines. Optical distance sensors are non-contact and offer high accuracy and precision. Both sensor applications benefit from light sources with a rapidly swept wavelength to monitor dynamic processes. In our paper, we precisely characterize the dynamic wavelength sweep of a rapidly pulsed VCSEL (vertical cavity surface emitting laser), a tiny semiconductor laser well suited for optical sensing.
PubDate: Wed, 15 Jun 2022 08:43:36 +020
DOI: 10.5194/jsss-11-161-2022 2022
- Precision measurement of the application-dependent current consumption of
a wireless transceiver chip in the time and frequency domain
Abstract: Precision measurement of the application-dependent current consumption of a wireless transceiver chip in the time and frequency domain
Thomas Robert Doebbert, Christoph Cammin, and Gerd Scholl
J. Sens. Sens. Syst., 11, 149–159, https://doi.org/10.5194/jsss-11-149-2022, 2022
Modern production concepts generate a demand for reliable, energy-efficient, fast, and secure wireless communication solutions. Therefore, the current consumption should not increase substantially due to additional security operations. This paper shows a principle current measurement method that is exemplary of a transceiver for IO-Link Wireless protocol. The results show that the current consumption only increases slightly with acceptable measurement uncertainty.
PubDate: Mon, 13 Jun 2022 08:43:36 +020
DOI: 10.5194/jsss-11-149-2022 2022
- Improving the electrical and structural stability of highly piezoresistive
nickel–carbon sensor thin films
Abstract: Improving the electrical and structural stability of highly piezoresistive nickel–carbon sensor thin films
Günter Schultes, Mario Cerino, Angela Lellig, and Marcus Koch
J. Sens. Sens. Syst., 11, 137–147, https://doi.org/10.5194/jsss-11-137-2022, 2022
We develop sensor material to effectively transform mechanical force or torque into an electrical resistance. A new type of thin films containing nickel and carbon has a significantly higher output and is thus very advantageous. But so far, the electrical resistance lacks stability. We therefore investigate how to stabilize the material and show that the partial replacement of nickel by the element chromium solves the problem. The optimized sensor films are now suitable for widespread use.
PubDate: Fri, 06 May 2022 12:22:38 +020
DOI: 10.5194/jsss-11-137-2022 2022
- An algorithmic method for the identification of wood species and the
classification of post-consumer wood using fluorescence lifetime imaging
microscopy
Abstract: An algorithmic method for the identification of wood species and the classification of post-consumer wood using fluorescence lifetime imaging microscopy
Nina Leiter, Maximilian Wohlschläger, Martin Versen, and Christian Laforsch
J. Sens. Sens. Syst., 11, 129–136, https://doi.org/10.5194/jsss-11-129-2022, 2022
In this contribution the frequency domain fluorescence lifetime imaging microscopy (FD-FLIM) technique is evaluated for post-consumer wood sorting. The measured data were processed using algorithmic decision trees to identify the wood species and post-consumer wood category. The experimental results revealed the high potential of the FD-FLIM technique for automated post-consumer wood sorting.
PubDate: Tue, 03 May 2022 16:01:34 +020
DOI: 10.5194/jsss-11-129-2022 2022
- Acoustophoresis in suspensions with local and time-discrete sound fields
based on the time reversal technique
Abstract: Acoustophoresis in suspensions with local and time-discrete sound fields based on the time reversal technique
Philipp Hörnlein, Sebastian Wöckel, Hendrik Arndt, and Jörg Auge
J. Sens. Sens. Syst., 11, 117–128, https://doi.org/10.5194/jsss-11-117-2022, 2022
The present research work investigated the acoustic manipulation of bioparticles and cells in closed and liquid-filled vessels using a special method for focusing acoustic fields. Based on simulation studies, the feasibility of particle manipulation with this method was successfully demonstrated. Successful final testing using a demonstrator and thus the transfer and prospective application in biotechnology are part of further research work.
PubDate: Fri, 08 Apr 2022 12:17:41 +020
DOI: 10.5194/jsss-11-117-2022 2022
- Adjustment concept for compensating for stiffness and tilt sensitivity of
a novel monolithic electromagnetic force compensation (EMFC) weighing cell
Abstract: Adjustment concept for compensating for stiffness and tilt sensitivity of a novel monolithic electromagnetic force compensation (EMFC) weighing cell
Markus Pabst, Maximilian Darnieder, René Theska, and Thomas Fröhlich
J. Sens. Sens. Syst., 11, 109–116, https://doi.org/10.5194/jsss-11-109-2022, 2022
An adjustment concept for high-precision weighing cells has been developed and experimentally investigated. It allows for minimization of uncertainty contributions due to tilt while maximizing sensitivity to mass. By applying the adjustment capabilities to new weighing cells, the devices can simultaneously become more accurate, more adaptable and more robust.
PubDate: Thu, 07 Apr 2022 11:51:36 +020
DOI: 10.5194/jsss-11-109-2022 2022
- A modular adaptive residual generator for a diagnostic system that detects
sensor faults on engine test beds
Abstract: A modular adaptive residual generator for a diagnostic system that detects sensor faults on engine test beds
Michael Wohlthan, Gerhard Pirker, and Andreas Wimmer
J. Sens. Sens. Syst., 11, 99–107, https://doi.org/10.5194/jsss-11-99-2022, 2022
It is a great challenge to apply a diagnostic system to engine test beds. The main problem is that such test beds involve frequent configuration changes. Therefore, the diagnostic system must be highly adaptable. A modular toolbox-based approach combines physics-based and data-driven modeling concepts and, thus, enables highly flexible application. Adaptability and detection quality are validated using measurement data from a single-cylinder engine and a multicylinder engine.
PubDate: Tue, 29 Mar 2022 18:26:57 +020
DOI: 10.5194/jsss-11-99-2022 2022
- Assembly and interconnection technology for high-temperature bulk acoustic
wave resonators
Abstract: Assembly and interconnection technology for high-temperature bulk acoustic wave resonators
Fabian Kohler, Monika Farina, Michal Schulz, Holger Fritze, and Jürgen Wilde
J. Sens. Sens. Syst., 11, 83–97, https://doi.org/10.5194/jsss-11-83-2022, 2022
This work shows a possibility of assembly and connection technology for use under high temperatures up to 1000 °C. A packaging concept was developed, and all the necessary material and joining technologies have been verified to be suitable for use at 1000 °C. A working sensor was built and measured in comparison to the resonator alone. All packaging materials and structures were measured electrically and dielectrically. Equivalent circuits for the packages up to 2 MHz and 1000 °C are available.
PubDate: Wed, 23 Mar 2022 07:44:41 +010
DOI: 10.5194/jsss-11-83-2022 2022
- Structure of digital metrological twins as software for uncertainty
estimation
Abstract: Structure of digital metrological twins as software for uncertainty estimation
Ivan Poroskun, Christian Rothleitner, and Daniel Heißelmann
J. Sens. Sens. Syst., 11, 75–82, https://doi.org/10.5194/jsss-11-75-2022, 2022
The paper proposes a structure for the creation of new simulation software for uncertainty estimation. The structure was derived from the well-established VCMM. To make it easy to apply the software structure to specific projects, a supporting software library (written in C++) was created. The library provides all the components necessary to create software for uncertainty estimation. The software structure and library proposed can be used in different domains of metrology.
PubDate: Wed, 09 Mar 2022 08:47:26 +010
DOI: 10.5194/jsss-11-75-2022 2022
- Particularities of pyroelectric detectors in absolute measurements of
chopped radiation shown for the example of a spectral responsivity
calibration in the near- and mid-infrared spectral range at two primary
radiometric standards
Abstract: Particularities of pyroelectric detectors in absolute measurements of chopped radiation shown for the example of a spectral responsivity calibration in the near- and mid-infrared spectral range at two primary radiometric standards
Tobias Pohl, Peter Meindl, Jörg Hollandt, Uwe Johannsen, and Lutz Werner
J. Sens. Sens. Syst., 11, 61–73, https://doi.org/10.5194/jsss-11-61-2022, 2022
The Physikalisch-Technische Bundesanstalt calibrated pyroelectric detectors at two independent primary radiometric standards regarding their spectral responsivity. The SI traceable measurements in the spectral range between 1.5 and 14 µm are consistent within the measurement uncertainty in the range of 1 % and 14 %. The importance of the correct read-out of lock-in amplifiers and the accurate consideration of the temporal shape of the chopped radiant flux behind the chopper wheel are shown.
PubDate: Wed, 23 Feb 2022 08:55:52 +010
DOI: 10.5194/jsss-11-61-2022 2022
- In situ analysis of hydration and ionic conductivity of sulfonated
poly(ether ether ketone) thin films using an interdigitated electrode
array and a nanobalance
Abstract: In situ analysis of hydration and ionic conductivity of sulfonated poly(ether ether ketone) thin films using an interdigitated electrode array and a nanobalance
Hendrik Wulfmeier, Niklas Warnecke, Luca Pasquini, Holger Fritze, and Philippe Knauth
J. Sens. Sens. Syst., 11, 51–59, https://doi.org/10.5194/jsss-11-51-2022, 2022
A newly developed experimental setup to characterize thin polymeric films during dehydration and hydration is presented. The great advantage of this measurement device and technique is that it monitors the mass change and conductivity of the films in situ and simultaneously at virtually identical conditions. The feasibility of the technique is demonstrated by characterizing ionomer thin films. A mass resolution of ±7.9 ng is achieved. The precision of relative humidity (RH) control is ±0.15 %.
PubDate: Wed, 23 Feb 2022 08:55:52 +010
DOI: 10.5194/jsss-11-51-2022 2022
- Method and experimental investigation of surface heat dissipation
measurement using 3D thermography
Abstract: Method and experimental investigation of surface heat dissipation measurement using 3D thermography
Robert Schmoll, Sebastian Schramm, Tom Breitenstein, and Andreas Kroll
J. Sens. Sens. Syst., 11, 41–49, https://doi.org/10.5194/jsss-11-41-2022, 2022
The method of non-contact temperature measurement in conjunction with a 3D sensor described in this paper can be used to determine the heat loss of technical devices and industrial plants. This measurement tool thus helps to optimize the energy efficiency of these devices and plants.
PubDate: Fri, 11 Feb 2022 09:35:55 +010
DOI: 10.5194/jsss-11-41-2022 2022
- An in-hive soft sensor based on phase space features for Varroa
infestation level estimation and treatment need detection
Abstract: An in-hive soft sensor based on phase space features for Varroa infestation level estimation and treatment need detection
Andreas König
J. Sens. Sens. Syst., 11, 29–40, https://doi.org/10.5194/jsss-11-29-2022, 2022
Bees play a major role in our ecosystem and the human food supply chain. Numerous threats, from pesticides to parasites, endanger bees and possibly cause bee colony collapse. The Varroa mite is one major parasite, and its timely detection and treatment is a key task for beekeepers. Contemporary sensors, electronics, and AI/PR allow vital parameters of bee hives to be monitored. Recent gas sensors (e.g., SGP30 or BME680) allow continuous in-hive parameter and Varroa population monitoring.
PubDate: Thu, 20 Jan 2022 12:50:50 +010
DOI: 10.5194/jsss-11-29-2022 2022
- Design of a dual electrochemical quartz crystal microbalance with
dissipation monitoring
Abstract: Design of a dual electrochemical quartz crystal microbalance with dissipation monitoring
Rafael Ecker, Nikolaus Doppelhammer, Bernhard Jakoby, and Erwin Konrad Reichel
J. Sens. Sens. Syst., 11, 21–28, https://doi.org/10.5194/jsss-11-21-2022, 2022
A setup for the characterization of liquids with the perspective of monitoring crystallization processes is presented. The novelty of this setup is the realization of viscosity and conductivity measurements using two quartz crystal microbalances. Additionally, there is the possibility to apply an electric field through the sample, enabling the manipulation of charged particles. The results show that the measured values are in reasonable agreement with values from the literature or standards.
PubDate: Tue, 18 Jan 2022 12:50:50 +010
DOI: 10.5194/jsss-11-21-2022 2022
- Numerical analysis of an infrared gas sensor utilizing an
indium-tin-oxide-based plasmonic slot waveguide
Abstract: Numerical analysis of an infrared gas sensor utilizing an indium-tin-oxide-based plasmonic slot waveguide
Parviz Saeidi, Bernhard Jakoby, Gerald Pühringer, Andreas Tortschanoff, Gerald Stocker, Jasmin Spettel, Thomas Grille, and Reyhaneh Jannesari
J. Sens. Sens. Syst., 11, 15–20, https://doi.org/10.5194/jsss-11-15-2022, 2022
We investigated the feasibility of indium tin oxide (ITO) as an alternative plasmonic material to replace noble metals for sensing applications in the mid-infrared region. An ITO-based plasmonic slot waveguide was numerically designed and analysed for a wavelength of 4.26 µm, which is the absorption band of CO2. As the proposed structure shows low propagation lengths, we concluded that ITO appears not to be an appropriate candidate for plasmonic waveguiding systems.
PubDate: Fri, 14 Jan 2022 17:33:40 +010
DOI: 10.5194/jsss-11-15-2022 2022
- Smart in-cylinder pressure sensor for closed-loop combustion control
Abstract: Smart in-cylinder pressure sensor for closed-loop combustion control
Dennis Vollberg, Peter Gibson, Günter Schultes, Hans-Werner Groh, and Thomas Heinze
J. Sens. Sens. Syst., 11, 1–13, https://doi.org/10.5194/jsss-11-1-2022, 2022
We developed a smart in-cylinder pressure sensor for closed-loop combustion control. The sensor concept is based on a robust and reliable steel membrane equipped with highly strain-sensitive and temperature-stable thin films. The sensor system is complemented by a smart electronics allowing real-time data processing for calculation of different combustion parameters. The data are utilized to control the igniting timing of a spark plug for efficient operation of a combustion engine.
PubDate: Tue, 04 Jan 2022 12:05:49 +010
DOI: 10.5194/jsss-11-1-2022 2022
- Validation of SI-based digital data of measurement using the TraCIM system
Abstract: Validation of SI-based digital data of measurement using the TraCIM system
Daniel Hutzschenreuter, Bernd Müller, Jan Henry Loewe, and Rok Klobucar
J. Sens. Sens. Syst., 10, 289–295, https://doi.org/10.5194/jsss-10-289-2021, 2021
The paper presents a concept for an automated classification of machine-readable data from measurement according to its agreement with metrological guidelines. An implementation of the classification was realized within the TraCIM online validation system for trustworthy certification of software that is under quality management. The research was collaboratively made by the partners of the European Metrology Research Project SmartCom.
PubDate: Mon, 13 Dec 2021 18:16:45 +010
DOI: 10.5194/jsss-10-289-2021 2021
- Monitor and control test room for investigating thermal performance of
panels incorporating phase-change material
Abstract: Monitor and control test room for investigating thermal performance of panels incorporating phase-change material
Marwa Othmen, Radwen Bahri, Slaheddine Najar, and Ahmed Hannachi
J. Sens. Sens. Syst., 10, 281–288, https://doi.org/10.5194/jsss-10-281-2021, 2021
A homemade experimental setup was developed using actuators and temperature sensors monitored by Arduino platforms to characterize thermal behaviors of composite panels containing phase-change materials (PCMs). The characterization is based on modeling steady-state thermal conduction and natural convection heat transfer. Temperature measurements allow for obtaining effective thermal conductivity, phase shift time, and energy storage capacity of composite panels incorporating PCMs.
PubDate: Fri, 10 Dec 2021 10:22:35 +010
DOI: 10.5194/jsss-10-281-2021 2021
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