Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control
In this paper, an architecture of an electrical equivalence pyranometer with analog control of the temperature difference is presented. The classical electrical equivalence pyranometer employs a Wheatstone bridge with a feedback amplifier to keep the sensor operating at a constant temperature to est...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/21/8137 |
| _version_ | 1797466553707397120 |
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| author | Evandson Claude Seabra Dantas José Taunaí Dantas Segundo Sebastian Yuri Cavalcanti Catunda Diomadson Rodrigues Belfort Raimundo Carlos Silvérios Freire Paulo Fernandes da Silva Júnior |
| author_facet | Evandson Claude Seabra Dantas José Taunaí Dantas Segundo Sebastian Yuri Cavalcanti Catunda Diomadson Rodrigues Belfort Raimundo Carlos Silvérios Freire Paulo Fernandes da Silva Júnior |
| author_sort | Evandson Claude Seabra Dantas |
| collection | DOAJ |
| description | In this paper, an architecture of an electrical equivalence pyranometer with analog control of the temperature difference is presented. The classical electrical equivalence pyranometer employs a Wheatstone bridge with a feedback amplifier to keep the sensor operating at a constant temperature to estimate the incident radiation through the sensor thermal balance employing the electrical equivalence principal. However, this architecture presents limitations under ambient temperature variation, such as sensitivity variation. To overcome those limitations, we propose an architecture that controls the temperature difference between the sensor and ambient via an analog compensating circuit. Analytical results show an improvement near five times in sensitivity over the ambient temperature span and 76.3% increase of useful output voltage. A prototype was developed and validated with a commercial pyranometer, showing a high agreement on the measurement results. It is verified that the use of temperature difference, rather than constant temperature, significantly reduces the effect of ambient temperature variation. |
| first_indexed | 2024-03-09T18:41:26Z |
| format | Article |
| id | doaj.art-cacd1ef641da4257a90e2da0935d1a73 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T18:41:26Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-cacd1ef641da4257a90e2da0935d1a732023-11-24T06:43:17ZengMDPI AGSensors1424-82202022-10-012221813710.3390/s22218137Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog ControlEvandson Claude Seabra Dantas0José Taunaí Dantas Segundo1Sebastian Yuri Cavalcanti Catunda2Diomadson Rodrigues Belfort3Raimundo Carlos Silvérios Freire4Paulo Fernandes da Silva Júnior5Graduate Program in Electrical and Computer Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, BrazilGraduate Program in Electrical and Computer Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, BrazilGraduate Program in Electrical and Computer Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, BrazilGraduate Program in Electrical and Computer Engineering, Technology Center, Federal University of Rio Grande do Norte, Natal 59078-970, RN, BrazilGraduate Program in Electrical Engineering, Department of Electrical Engineering, Federal University of Campina Grande, Campina Grande 58429-900, PB, BrazilDepartment of Electrical Engineering, State University of Maranhão, Balsas 65800-000, MA, BrazilIn this paper, an architecture of an electrical equivalence pyranometer with analog control of the temperature difference is presented. The classical electrical equivalence pyranometer employs a Wheatstone bridge with a feedback amplifier to keep the sensor operating at a constant temperature to estimate the incident radiation through the sensor thermal balance employing the electrical equivalence principal. However, this architecture presents limitations under ambient temperature variation, such as sensitivity variation. To overcome those limitations, we propose an architecture that controls the temperature difference between the sensor and ambient via an analog compensating circuit. Analytical results show an improvement near five times in sensitivity over the ambient temperature span and 76.3% increase of useful output voltage. A prototype was developed and validated with a commercial pyranometer, showing a high agreement on the measurement results. It is verified that the use of temperature difference, rather than constant temperature, significantly reduces the effect of ambient temperature variation.https://www.mdpi.com/1424-8220/22/21/8137analog pyranometeranalog radiometerelectrical equivalenceelectrical substitutionconstant temperature differenceWheatstone bridge |
| spellingShingle | Evandson Claude Seabra Dantas José Taunaí Dantas Segundo Sebastian Yuri Cavalcanti Catunda Diomadson Rodrigues Belfort Raimundo Carlos Silvérios Freire Paulo Fernandes da Silva Júnior Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control Sensors analog pyranometer analog radiometer electrical equivalence electrical substitution constant temperature difference Wheatstone bridge |
| title | Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control |
| title_full | Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control |
| title_fullStr | Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control |
| title_full_unstemmed | Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control |
| title_short | Architecture of an Electrical Equivalence Pyranometer with Temperature Difference Analog Control |
| title_sort | architecture of an electrical equivalence pyranometer with temperature difference analog control |
| topic | analog pyranometer analog radiometer electrical equivalence electrical substitution constant temperature difference Wheatstone bridge |
| url | https://www.mdpi.com/1424-8220/22/21/8137 |
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