2011
DOI: 10.1016/j.infrared.2010.12.038
|View full text |Cite
|
Sign up to set email alerts
|

Infrared temperature measurement uncertainty for unchopped thermopile in presence of case thermal gradients

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
10
0

Year Published

2012
2012
2024
2024

Publication Types

Select...
5
2
1

Relationship

0
8

Authors

Journals

citations
Cited by 16 publications
(10 citation statements)
references
References 10 publications
0
10
0
Order By: Relevance
“…For the GTS and Thermal Infrared Sensor radiometers on the Mars Science Laboratory and Mars 2020 rovers, the temperature inhomogeneity and the resulting heat exchange with the thermopile absorber have been parameterized in the form of a mathematical thermal model based on the geometry of the instrument and coefficients derived from tests (Pérez‐Izquierdo et al, ; Sebastián et al, , ). These radiometers are not actively temperature controlled and therefore have to operate under a wide range of temperatures and temperature change rates (Sebastián et al, ).…”
Section: Radiometric Calibrationmentioning
confidence: 99%
“…For the GTS and Thermal Infrared Sensor radiometers on the Mars Science Laboratory and Mars 2020 rovers, the temperature inhomogeneity and the resulting heat exchange with the thermopile absorber have been parameterized in the form of a mathematical thermal model based on the geometry of the instrument and coefficients derived from tests (Pérez‐Izquierdo et al, ; Sebastián et al, , ). These radiometers are not actively temperature controlled and therefore have to operate under a wide range of temperatures and temperature change rates (Sebastián et al, ).…”
Section: Radiometric Calibrationmentioning
confidence: 99%
“…An example of the thermal test is given in the Figure 3b. Figure 3c shows that the experimental data are fitted with a 4-order polynomial, according to the Equation [6] shown in the inset of Figure 3c. is the instrument factor of the sensor ( = 5.50 × 10 −14 ), is the emissivity of the target disk ( = 0.9), Ttarg is the temperature of the disk and Tsens is the temperature of the sensor.…”
Section: Resultsmentioning
confidence: 99%
“…is the instrument factor of the sensor ( = 5.50 × 10 −14 ), is the emissivity of the target disk ( = 0.9), Ttarg is the temperature of the disk and Tsens is the temperature of the sensor. = 1 considering the internal reflections inside the thermopile case, and therefore, the whole structure behaves as a cavity blackbody with high emissivity [6]. The responsivity (Rs) is obtained by the slope of the output voltage as a function of absorbed heat radiation power [2], and is 0.19 V W −1 for our sensor.…”
Section: Resultsmentioning
confidence: 99%
“…The support plate includes a couple of heaters that permits to keep constant detectors temperature during high performance operational mode. Its temperature is monitored by two resistance temperature detectors (RTD) that are used by heaters control system, as well as to estimate thermopiles' thermal gradients during in-flight calibration procedure [14] and the high performance mode.…”
Section: Tirs Description and Requiremtnsmentioning
confidence: 99%
“…TIRS' thermopiles measure the net radiative flux exchanged between the sensing element or absorbing surface and the bodies around it: external as the target and calibration plate and internal as thermopile package inner surfaces [14]. The thermopiles' output voltage, V ou t, is a representation of the temperature difference between the sensor package and the sensing element, which is in radiative balance with the target, and therefore influenced by its temperature or irradiance.…”
Section: A Measurement Principalmentioning
confidence: 99%