Temperature integrity sensor
AssigneeUniversita Degli Studi di Cagliari
InventorGiuseppe SFORAZZINI
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Abstract
A temperature integrity sensor or more precisely a temperature continuity sensor of a product which needs to be kept at a temperature below its degradation temperature, is provided. The product includes a refrigerated or frozen edible product; a pharmaceutical product such as a vaccine, or an antibiotic; or a biological-medical product such as a sample of a body fluid or tissue, or an organ. The sensor is based on RFID technology, in particular passive RFID technology.
Claims21
A temperature sensor comprising a radio frequency identification (RFID), wherein the RFID comprises:
- a support, wherein a heat-responsive compound characterized by a π-conjugated system is applied on the support, a conformational variation of the support varies a conductivity of the heat-responsive compound, the heat-responsive compound is more conductive in response to an absorption of light having a wavelength of 360 nm with respect to a less conductive state of the heat-responsive compound in response to an absorption of a lower wavelength light,
- wherein the heat-responsive compound is applied in a most conductive conformation of the heat-responsive compound at a temperature below 0° C. and passes spontaneously, irreversibly, and unidirectionally from the most conductive conformation to a least conductive conformation as the temperature rises from 0° C. to room temperature.
A compound comprising a structure shown in formula 6, formula 7, formula 8, formula 19, formula 20, formula 21, formula 22, formula 23, formula 24, formula 25, formula 26, formula 27, formula 28, formula 29, or formula 30:
A computer-implemented method for measuring a temperature continuity of a product, comprising the following steps:
- i) an acquisition of operational values of a temperature continuity detector device;
- ii) an acquisition of control and threshold values of the product under an examination;
- iii) an acquisition of a signal of the temperature continuity detector device;
- iv) an evaluation of a progress level of a thermal relaxation;
- v) counting of measurements and history;
- vi) an assignment of a level of healthiness of the product.
Dependencies are inferred from the claim text.