Inductive Sensor for Weighing of Mass

Lewandowski, Janusz

doi:10.2478/v10178-011-0014-9

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…For measurements of several physical quantities, the sensitivity of a Bragg grating to temperature is an undesirable feature and complicates the possibility of its use as part of instruments for measuring elements such as strain [1], pressure [2] or mass [3]. In the case of measuring the shift in the Bragg wavelength of a single grating, it is difficult to specify if and to what extent the change was caused by the strain or temperature of the grating.…”

Section: Introductionmentioning

confidence: 99%

Generation of a Zone Chirp in Uniform Bragg Grating is a Way of Obtaining Double Functionality of a Sensor

Kisała¹

2012

Metrology and Measurement Systems

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This paper presents a method of using a sensor with uniform Bragg grating with appropriately generated zone chirp. The presented method can be used for measuring two physical quantities, namely strain and temperature. By providing the same temperature sensitivity and different sensitivity to strain of two parts of a sensor, and experimental measurement of qualities of the proposed system and its calibration (experimental determination of sensitivity), verification of the results obtained from laboratory tests and the possibility of its practical implementation has been confirmed. The sensor grating was placed in such a way that its half was in the zone of a variable value of axial strain caused by changes of the cross-section of the sample. The other half, however, was in the zone of a constant cross-section of the sample and of constant value of strain, caused by the force stretching the sample. The obtained errors of non-linearity of processing characteristics for measuring strain and temperature of the proposed system were 2.7% and 1.5% respectively, while coefficients of sensitivity to strain and temperature were 0.77 x 10-6 m/e and 4.13 x 10-12 m/K respectively. The maximum differences between the values obtained from the indirect measurement and the set values were 110 μe for strain and 3.8°C for temperature, for a strain of 2500 μe and a temperature of 40°C.

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Section: Introductionmentioning

confidence: 99%

Generation of a Zone Chirp in Uniform Bragg Grating is a Way of Obtaining Double Functionality of a Sensor

Kisała¹

2012

Metrology and Measurement Systems

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“…The measurement of time is triggered by an optoelectronic system, consisting of two pairs of a diode/photodiode. The course of mechanical wave is recorded by means of a tensometer bridge system [4]. In order to average the course of the mechanical wave and eliminate the effects from buckling of the bar, the measurement of the strain is carried out by means of four tensometers bonded symmetrically on the circumference of the bar.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Impact of the Frequency Range of the Tensometer Bridge and Projectile Geometry on the Results of Measurements by the Split Hopkinson Pressure Bar Method

Moćko¹

2013

Metrology and Measurement Systems

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The paper presents the results of the analysis of the striker shape impact on the shape of the mechanical elastic wave generated in the Hopkinson bar. The influence of the tensometer amplifier bandwidth on the stress-strain characteristics obtained in this method was analyzed too. For the purposes of analyzing under the computing environment ABAQUS / Explicit the test bench model was created, and then the analysis of the process of dynamic deformation of the specimen with specific mechanical parameters was carried out. Based on those tests, it was found that the geometry of the end of the striker has an effect on the form of the loading wave and the spectral width of the signal of that wave. Reduction of the striker end diameter reduces unwanted oscillations, however, adversely affects the time of strain rate stabilization. It was determined for the assumed test bench configuration that a tensometric measurement system with a bandwidth equal to 50 kHz is sufficient.

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Influence of drying methods on the structure, mechanical and sensory properties of strawberries

Piotrowski¹,

Kostyra

Grzegory³

et al. 2021

Eur Food Res Technol

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Inductive Sensor for Weighing of Mass

Cited by 4 publications

References 2 publications

Generation of a Zone Chirp in Uniform Bragg Grating is a Way of Obtaining Double Functionality of a Sensor

Generation of a Zone Chirp in Uniform Bragg Grating is a Way of Obtaining Double Functionality of a Sensor

Analysis of the Impact of the Frequency Range of the Tensometer Bridge and Projectile Geometry on the Results of Measurements by the Split Hopkinson Pressure Bar Method

Influence of drying methods on the structure, mechanical and sensory properties of strawberries

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