Device for monitoring the temperature of an element
First Claim
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1. A circuit for monitoring the temperature surrounding the circuit, comprising:
- a charge storage element;
a charge evacuation element;
a thermo-mechanical switch connecting the storage element to the evacuation element, said switch being capable of closing without the circuit being electrically powered, when the temperature exceeds a threshold, wherein the thermo-mechanical switch is formed of two metal strips having opposite ends separated by a distance adapted to decreasing as the temperature increases and to come down to zero when the temperature exceeds the threshold; and
a device for reading the amount of charge in the storage element.
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Abstract
A device for monitoring the temperature surrounding a circuit, including: a charge storage element; a charge evacuation device; and a thermo-mechanical switch connecting the storage element to the evacuation element, the switch being capable of closing without the circuit being electrically powered, when the temperature exceeds a threshold.
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Citations
16 Claims
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1. A circuit for monitoring the temperature surrounding the circuit, comprising:
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a charge storage element; a charge evacuation element; a thermo-mechanical switch connecting the storage element to the evacuation element, said switch being capable of closing without the circuit being electrically powered, when the temperature exceeds a threshold, wherein the thermo-mechanical switch is formed of two metal strips having opposite ends separated by a distance adapted to decreasing as the temperature increases and to come down to zero when the temperature exceeds the threshold; and a device for reading the amount of charge in the storage element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A temperature monitoring circuit comprising:
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a charge storage element; a thermo-mechanical switch connected to the charge storage element and configured to discharge the charge storage element when the temperature exceeds a temperature threshold; and a monitoring device configured to read a charge in the charge storage element, the charge being indicative of whether the temperature threshold has been exceeded, wherein the charge storage element comprises a floating gate of a floating gate transistor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification