Ru-Based Thin Film Temperature Sensor for Space Environments: Microfabrication and Characterization under Total Ionizing Dose

Arias, S. I. Ravelo; Muñoz, David; Freitas, P. P.

doi:10.1155/2016/6086752

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…Compensations of current sensors in Wheatstone bridge configuration based on spinvalve technology were presented in [37][38][39]. For these cases, a compensator based on an Ru RTD sensor was integrated into the same substrate as the sensor bridge.…”

Section: Discussionmentioning

confidence: 99%

“…In the design presented, it is the gain of a voltage amplifier that changes with temperature and the TC of an Ru-based compensator was not sufficient to satisfy Equation (15). It would be highly desirable to have MR-shunt elements and Ru-based compensators sharing the same substrate to enhance thermal coupling between them, thereby enabling better thermal compensation using methods as described in [37][38][39].…”

Section: Discussionmentioning

confidence: 99%

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Characterization of Magnetoresistive Shunts and Its Sensitivity Temperature Compensation

Ramírez-Muñoz,

García-Gil,

Cardoso

et al. 2024

Sensors

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The main purpose of the paper is to show how a magnetoresistive (MR) element can work as a current sensor instead of using a Wheatstone bridge composed by four MR elements, defining the concept of a magnetoresistive shunt (MR-shunt). This concept is reached by considering that once the MR element is biased at a constant current, the voltage drop between its terminals offers information, by the MR effect, of the current to be measured, as happens in a conventional shunt resistor. However, an MR-shunt has the advantage of being a non-dissipative shunt since the current of interest does not circulate through the material, preventing its self-heating. Moreover, it provides galvanic isolation. First, we propose an electronic circuitry enabling the utilization of the available MR sensors integrated into a Wheatstone bridge as sensing elements (MR-shunt). This circuitry allows independent characterization of each of the four elements of the bridge. An independently implemented MR element is also analyzed. Secondly, we propose an electronic conditioning circuit for the MR-shunt, which allows both the bridge-integrated element and the single element to function as current sensors in a similar way to the sensing bridge. Third, the thermal variation in the sensitivity of the MR-shunt, and its temperature coefficient, are obtained. An electronic interface is proposed and analyzed for thermal drift compensation of the MR-shunt current sensitivity. With this hardware compensation, temperature coefficients are experimentally reduced from 0.348%/°C without compensation to −0.008%/°C with compensation for an element integrated in a sensor bridge and from 0.474%/°C to −0.0007%/°C for the single element.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Characterization of Magnetoresistive Shunts and Its Sensitivity Temperature Compensation

Ramírez-Muñoz,

García-Gil,

Cardoso

et al. 2024

Sensors

View full text Add to dashboard Cite

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Fabrication and linearisation of conformable POMANI-Mn3O4 nanocomposite based thermistor for temperature monitoring applications in prosthetic gloves

Kumar

Singla

Kumar

et al. 2019

Sensors and Actuators A: Physical

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Oxadiazole Based Polyether as Sensitive Films for Ratiometric Optical Temperature Detection

et al. 2016

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A new type of polymer, based on the oxadiazole group, has been tested as indicator material for a ratiometric photoluminescence and optical reflection based temperature sensor in the temperature range between 30 ∘ C and 60 ∘ C. Thin films of the new polymer have been deposited by spin-coating on a glass substrate, excited by means of a low-cost near UV-LED. The optical spectrum, as detected by a fiber-based PC-card optical spectrometer, consisted of the reflection peak at the excitation wavelength and two distinct photoluminescence peaks at 430 nm and 480 nm, both in the blue spectral region. The peak amplitudes of all three spectral peaks depend linearly on the exciting light intensity. Changing the sample temperature, all peak amplitude values decrease monotonously with increasing temperature. By using a ratiometric approach, it has been found that the ratio between the two photoluminescence peaks was almost constant with temperature, while the ratio between the main photoluminescence peak at 430nm and the reflection peak around 380 nm scaled nicely with the ambient temperature. Therefore, it has been proposed to use the latter criterion and a simple polynomial fit to the temperature versus peak amplitude relation.

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Ru-Based Thin Film Temperature Sensor for Space Environments: Microfabrication and Characterization under Total Ionizing Dose

Cited by 4 publications

References 8 publications

Characterization of Magnetoresistive Shunts and Its Sensitivity Temperature Compensation

Characterization of Magnetoresistive Shunts and Its Sensitivity Temperature Compensation

Fabrication and linearisation of conformable POMANI-Mn3O4 nanocomposite based thermistor for temperature monitoring applications in prosthetic gloves

Oxadiazole Based Polyether as Sensitive Films for Ratiometric Optical Temperature Detection

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