Sensor labels that log events against time

Patent metadata

Field	Value
Publication number	US-9658167-B2
Application number	US-201414568602-A
Country	US
Kind code	B2
Filing date	Dec 12, 2014
Priority date	Dec 12, 2014
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

Disposable or single-use sensor labels sense a parameter and record the sensed parameter having: a semi-permeable medium or substrate with a parameter-sensitive and activatable developer. The developer, when activated, exhibits a detectable manifestation of a changed state that progresses over time. The detectable manifestation of this changed state is read and recorded to log parameter change data. Further, a method of using the sensor label monitors viability of a material associated with the label, such as for freshness and security assessment that is recorded for archival or reporting or quality control purposes. A changed state is exhibited that progresses over time, associating the label with a material to be monitored and positioning same into a given environment, and the recording can track the changed state against time.

First claim

The invention claimed is:

1. A sensor label that is designed for and fabricated for single use or disposability that senses a parameter and records the sensed parameter, comprising:
a semi-permeable medium;
a parameter-sensitive and activatable developer on the semi-permeable medium, the developer, when activated exhibits a detectable manifestation of a changed state that progresses over time;
the activatable developer is a piezo-electric that is configured to provide a voltage which changes in response to an environmental factor that is fixed against a time by a shock wave progressing during the time through the semi-permeable medium;
a reader of the detectable manifestation of this changed state; and
a recorder of the detectable manifestation of this changed state that logs parameter change data.

2. The sensor label in accordance with claim 1 , wherein the reader notes time of the reading, and the recorder logs parameter change data against time.

3. The sensor label in accordance with claim 1 , wherein the developer includes a reactive chemical within a solvent, and wherein the solvent carries the reactive chemical through a layer of the semi-permeable medium.

4. The sensor label in accordance with claim 1 , wherein the semi-permeable includes a cellulosic layer or component.

5. The sensor label in accordance with claim 1 , wherein the reader of the detectable manifestation is recognized by an RFID chip, and the recorder receives data from the RFID chip and logs the parameter change data against time.

6. The sensor label in accordance with claim 5 , wherein the recorder is remote from the RFID chip.

7. The sensor label in accordance with claim 1 , wherein the detectable manifestation is optically readable, the reader is an optical detector, and the recorder receives data from the optical detector and logs the parameter change data against time.

8. The sensor label in accordance with claim 1 , wherein the changed state is a diffusion change of the developer with respect to the semi-permeable medium, and the detectable manifestation is with respect to the diffusion change.

9. The sensor label in accordance with claim 1 , wherein the activatable developer is activated by an environmental factor selected from the group consisting of temperature, pressure, pH, moisture, shock, light, UV light, a gas, and combinations thereof.

10. The sensor label in accordance with claim 1 , wherein the activatable developer is a light-sensitive component that changes in response to exposure to light beyond a threshold amount.

11. The sensor label in accordance with claim 1 , wherein the activatable developer is an enzyme that changes in response to an environmental factor that is exposure to a chemical agent.

12. A method of using a sensor label for monitoring viability of a material associated with the label, comprising:
providing a sensor label that is designed for and fabricated for a single use or disposable including a semi-permeable medium having a parameter-sensitive and activatable developer that is selected from the group consisting of a piezo-electric layer, an enzyme layer, a micro-encapsulated reagent layer, and combinations thereof;
associating the label with a material to be monitored and positioning same into a given environment;
reading the detectable manifestation of this changed state; and
recording the detectable manifestation of this changed state in order to log parameter change data against time.

13. The method in accordance with claim 12 , wherein the reading notes time of reading and recording logs parameter change data against time.

14. The method in accordance with claim 12 , wherein the reading employs an RFID chip and the recording cooperates with the RFID chip and logs parameter change against time.

15. The method in accordance with claim 12 , wherein the reading employs an optical reader and the recording cooperates with the optical reader and logs parameter change against time.

16. The method in accordance with claim 12 , further including activating the developer by an environmental factor selected from the group consisting of temperature, pressure, pH, moisture, shock, light, UV light, a gas, and combinations thereof.

Assignees

• Avery Dennison Retail Information Services Llc

Inventors

• Forster Ian James
• Van Driesten Sjoerd J

Classifications

• G01N21/8483

  Investigating reagent band (test-element handling not specific to a test method G01N33/4875; analytical elements specific to chemical analysis of biological material G01N33/52; autometer with reagent band G01N35/04) · CPC title

• A61B5/06

  Devices, other than using radiation, for detecting or locating foreign bodies {; Determining position of diagnostic devices within or on the body of the patient} · CPC title

• G01N33/531

  Production of immunochemical test materials · CPC title

• G01N33/50

  Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing (measuring or testing processes involving enzymes or microorganisms, compositions or test papers therefor; processes for forming such compositions, condition responsive control in microbiological or enzymological processes C12Q) · CPC title

• G01N31/22

  using chemical indicators (G01N31/02 takes precedence) · CPC title