Sensors with Digital Output – A Metrological Challenge

Mende, Michael; Begoff, Philipp

doi:10.1051/metrology/201922002

Cited by 7 publications

(8 citation statements)

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“…The conclusion of the mentioned paper is that, in most cases, digital sensors are preferred. The same conclusion is reached by the authors of [ 38 ], who also offer reliable information on how to overcome the minor problems generated by the digital sensors and gain the most from their advantages. From this point forward, the last important characteristic of a sensor (from the integration point of view) is to be considered, that is, interface.…”

Section: Related Worksupporting

confidence: 61%

Easy-to-Use MOX-Based VOC Sensors for Efficient Indoor Air Quality Monitoring

Pietraru,

Nicolae,

Mocanu

et al. 2024

Sensors

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This research paper presents a case study on the application of Metal Oxide Semiconductor (MOX)-based VOC/TVOC sensors for indoor air quality (IAQ) monitoring. This study focuses on the ease of use and the practical benefits of these sensors, drawing insights from measurements conducted in a university laboratory setting. The investigation showcases the straightforward integration of MOX-based sensors into existing IAQ monitoring systems, highlighting their user-friendly features and the ability to provide precise and real-time information on volatile organic compound concentrations. Emphasizing ease of installation, minimal maintenance, and immediate data accessibility, this paper demonstrates the practicality of incorporating MOX-based sensors for efficient IAQ management. The findings contribute to the broader understanding of MOX sensor capabilities, providing valuable insights for those seeking straightforward and effective solutions for indoor air quality monitoring. This case study outlines the feasibility and benefits of utilizing MOX-based sensors in various environments, offering a promising avenue for the widespread adoption of user-friendly technologies in IAQ management.

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Section: Related Worksupporting

confidence: 61%

Easy-to-Use MOX-Based VOC Sensors for Efficient Indoor Air Quality Monitoring

Pietraru,

Nicolae,

Mocanu

et al. 2024

Sensors

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“…However, neither traceable methods are applied nor information about the associated uncertainty is provided. On the other hand, based on suitable metrological calibration procedures, it is possible to highly improve the quality of digital MEMS sensors output data by supplying the sensitivity from traceable methods [1]. To avoid misunderstandings, the meaning of terms used in this paper is that defined in the International Vocabulary of Metrology (VIM) [2].…”

Section: Introductionmentioning

confidence: 99%

Towards large-scale calibrations: a statistical analysis on 100 digital 3-axis MEMS accelerometers

Prato

Mazzoleni

Pennecchi

et al. 2021

2021 IEEE International Workshop on Metrology for Industry 4.0 &Amp; IoT (MetroInd4.0&IoT)

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Given the growing development and production of low-cost digital MEMS sensors, e.g. accelerometers, gyroscopes, microphones, humidity, pressure and temperature sensors, large-scale measurements are nowadays a possible reality in many different fields, from industry 4.0 to environmental monitoring and smart cities. However, in most of cases, digital MEMS sensors still lack the required metrological traceability needed to provide traceable measurements. As a matter of fact, at present, a preliminary sensitivity value of these sensors is provided by the manufacturers by performing a simple adjustment, without a proper traceable calibration. This is basically due to the impossibility, nowadays, to guarantee large-scale calibration procedures at costs comparable to those of the sensors. For this purpose, it is first of all necessary to know their current technical performances, in terms of sensitivity and associated uncertainties, and then to define possible large-scale calibration methods. In this work, 100 nominally equal 3-axis MEMS digital accelerometers are calibrated with a recentlydeveloped calibration setup at INRiM. Sensitivity values, together with their calibration expanded uncertainties, are compared to statistically analyze their dispersion and distribution within the considered sample. This is the first necessary step towards the development of large-scale calibration methods.

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“…Some accelerometers contain an A/D converter with a resolution as low as 8 bit. As pointed out in [5], the limited resolution can cause an estimation error in sine approximation fitting. Such an effect was numerically calculated here.…”

Section: Prospects For Application To Other Accelerometersmentioning

confidence: 99%

“…Discussions have been made about how digital accelerometers should be calibrated. The problems encountered in digital accelerometer calibration are overviewed in [5]. The main difference between analog and digital sensors is that signal sampling, A/D conversion, and internal signal processing are inaccessible to users, resulting in questions on which part should be calibrated and how to know the timing of the digital signal sampling.…”

Section: Introductionmentioning

confidence: 99%

Primary calibration system for digital accelerometers

Shimoda¹,

Kokuyama²,

Nozato³

2021

Metrologia

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Accelerometers with a digital signal output are widely used for the motion sensing of internet of things devices, vibration monitoring in industries, or scientific observations. Calibrating their frequency response is essential in extracting the correct information from measurements. However, the dynamic calibration method of a digital sensor has not yet been established. This study develops a simple synchronized data acquisition system for digital and analog signals and implements it in the primary calibration system of accelerometers. Using the constructed system, response of a digital accelerometer, including both sensitivity modulus and phase shift, is accurately determined. The measurement uncertainty was evaluated in detail, and the estimated values for the sensitivity modulus and the phase shift were below 0.2% and 0.1 • , respectively. The uncertainty source component specific to the digital signal acquisition system was negligible compared to the total uncertainty.

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Sensors with Digital Output – A Metrological Challenge

Cited by 7 publications

References 0 publications

Easy-to-Use MOX-Based VOC Sensors for Efficient Indoor Air Quality Monitoring

Easy-to-Use MOX-Based VOC Sensors for Efficient Indoor Air Quality Monitoring

Towards large-scale calibrations: a statistical analysis on 100 digital 3-axis MEMS accelerometers

Primary calibration system for digital accelerometers

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