Temperature sensor

US12235167B2 · kind B2 · utility

Assignee

• Valeo Siemens eAutomotive Germany GmbH · DE

Inventors

• Hrishikesh Joshi · Erlangen, DE
• Andreas Held · Erlangen, DE

Key dates

• Filing date: May 4, 2022
• Grant date: Feb 25, 2025
• Expiry date: May 6, 2043

Classification

• Technology area (CPC G): Physics
• CPC primary: G01K13/08
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A temperature sensor (116) comprises an electrical circuit (204) including a thermistor (206) intended to be placed next to an object (112); a temperature measurement module (222) configured for determining a measured temperature (T_M) of the thermistor (206) from a resistance of the thermistor (206); and a command module (224) configured for providing a command (C) to the electrical circuit (204) for modifying the electrical circuit (204) in a way that changes a current (IT) flowing in the thermistor (206). The temperature sensor (116) further comprises a thermal loss determination module (226) configured for determining a thermal loss (L) of the thermistor (206) from the thermistor measured temperature (T_M) and the command (C); and a temperature estimation module (228) configured for estimating a temperature (T0_E) of the object (112) from the thermistor measured temperature (T_M) and from the thermal loss (L) of the thermistor (TH).