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US 2021/0250025 A1Published application
Electronic environmental sensor tag
AssigneeNonvologic LLC
InventorMark B. Johnson
Life of this patent
Estimating the term…
Abstract
An electronic environmental sensor tag includes microsensor elements using magnetic logic devices adapted to detect target chemical and/or target environmental conditions. The microsensor elements operate only periodically to save power, and also include non-volatile memories and communications circuits to allow interrogation and detection of a target condition.
Claims12
An electronic environmental sensor tag comprising:
- a resistive sensor circuit configured with a resistance state that is responsive to the presence of a target chemical and/or target environmental condition when exposed to a target environment;
- a transducer coupled to the sensor circuit configured to detect said resistance state and generate an output corresponding thereto;
- a processing circuit coupled to said transducer and including one or more gates having magnetoelectronic devices adapted to perform a first sequence of operations during an operational mode on said output from said transducer;
- wherein a detection output is generated by the processing circuit having a detection value based on said first sequence of operations confirming the presence of said target chemical and/or target environmental condition;
- wherein the magnetoelectronic devices in the processing circuit are normally dormant and do not consumer power;
- a non-volatile memory coupled to said processing circuit for storing said detection value;
- a readout circuit coupled to the non-volatile memory and including an antenna element for communicating said detection value to a separate external reader device.
4 more elements
An electronic environmental sensor tag comprising:
- a resistive sensor circuit configured with a resistance state that is responsive to the presence of a target chemical and/or target environmental condition when exposed to a target environment;
- a transducer coupled to the sensor circuit configured to detect said resistance state and generate an output corresponding thereto;
- a processing circuit coupled to said transducer and including one or more gates having magnetoelectronic devices adapted to perform a first sequence of operations during an operational mode on said output from said transducer;
- wherein a detection output is generated by the processing circuit having a detection value based on said first sequence of operations confirming the presence of said target chemical and/or target environmental condition;
- wherein the magnetoelectronic devices in the processing circuit are normally dormant and do not consumer power;
- a plurality of readout chambers for releasing one or more separate optical-based readout chemicals in response to said detection value, and each in a sufficient quantity to be detectable individually by a human eye to ascertain an exposure of the tag to different target chemical conditions and/or different target environmental conditions.
3 more elements
Dependencies are inferred from the claim text.