A constant temperature operation thermoresistive sigma–delta solar radiometer

Oliveira, Amauri Pereira de; Palma, L.S.; Costa, Alexandre S.; Freire, Raimundo C. S.; Lima, Carla Caroline Valença de

doi:10.1016/j.measurement.2005.11.015

Cited by 14 publications

(4 citation statements)

References 9 publications

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“…First proposed with a discrete analogue implementation [12], the CCES was then demonstrated with a discrete digital implementation [16] to take advantage of the power feedback linearization induced by the digital feedback [17]. Such implementation involved microcontroller, DAC and ADC.…”

Section: Introductionmentioning

confidence: 99%

A heat balanced sigma–delta uncooled bolometer

Denoual¹,

Brouard²,

Veith³

et al. 2014

Meas. Sci. Technol.

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HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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Section: Introductionmentioning

confidence: 99%

A heat balanced sigma–delta uncooled bolometer

Denoual¹,

Brouard²,

Veith³

et al. 2014

Meas. Sci. Technol.

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“…A closed-loop configuration also improves the linearity and the range of the measurement and can reduce aging when materials such as polymers are considered because of limited temperature cycles. Closed-loop configurations using the Joule effect to feedback heat have been proposed [16][17][18][19]. These configurations use the electrical substitution (ES) principle that allows the feedback of heat, i.e.…”

Section: Introductionmentioning

confidence: 99%

Digital implementation of the capacitively coupled electrical substitution for resistive bolometers

Denoual¹,

Lebargy²,

Allègre³

2009

Meas. Sci. Technol.

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“…A mono-bit first-order thermal L-A modulator, as shown in Figure 1, was proposed as anemometer, which is based on the electric equivalence principle with the sensor operating at a constant temperature [3]. This fluid speed measurement system directly transforms the physical signal into its equivalent digital form and may be integrated with a microsensor.…”

Section: Introductionmentioning

confidence: 99%

Thermal Σ-Δ Modulator: Anemometer Performance Analysis

Almeida

Freitas

Palma

et al. 2007

2007 IEEE Instrumentation &Amp; Measurement Technology Conference IMTC 2007

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In this paper we propose a feedback architecture with a thermoresistive sensor, based on the thermal sigma-delta principle to realize digital measurement ofphysical quantities that interacts with the sensor: temperature, thermal radiation, fluid speed. This architecture uses a 1-bit sigma-delta modulator for which a considerable part of the conversion functions is performed by a thermoresistive sensor. The sensor is modelled using the electrical equivalence principle and the constant temperature measurement method is applied We present an analysis of the system performance, in terms of frequency response and system measurement resolution, of a 1-bit first-order Z7-J thermal modulator. It is shown that the system performance depends on the system oversampling ratio (OSR) and on the system transfer function pole and zero, which in turn, depends on the thermal and physical sensor characteristics and on the system operating conditions. This system is proposed as anemometer.

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A constant temperature operation thermoresistive sigma–delta solar radiometer

Cited by 14 publications

References 9 publications

A heat balanced sigma–delta uncooled bolometer

A heat balanced sigma–delta uncooled bolometer

Digital implementation of the capacitively coupled electrical substitution for resistive bolometers

Thermal Σ-Δ Modulator: Anemometer Performance Analysis

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A constant temperature operation thermoresistive sigma–delta solar radiometer

Cited by 14 publications

References 9 publications

A heat balanced sigma–delta uncooled bolometer

A heat balanced sigma–delta uncooled bolometer

Digital implementation of the capacitively coupled electrical substitution for resistive bolometers

Thermal &#x003A3;-&#x00394; Modulator: Anemometer Performance Analysis

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Product

Resources

About

Thermal Σ-Δ Modulator: Anemometer Performance Analysis