Electrochromic Strip Temperature Sensing via Metal Crimp

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Solution Overview

Problem

Existing solutions fail to monitor and communicate the internal temperature of items during transportation and storage, which can lead to adverse effects on sensitive contents.

Innovation Solution

An item and method that utilize a metal crimp coupled with a sensor to sense the internal temperature of contents within a bottle or box, and an electrochromic strip to display temperature indications, potentially alerting users and manufacturers via a server.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing temperature monitoring solutions are used, then environmental temperature can be monitored, but internal temperature of the item cannot be monitored

Engineering Contradiction:
Improvetemperature monitoring accuracyVSAvoidinternal temperature information
Core Design Contradiction:
Measurement precisionVSLoss of information

Solution Approach 1:

The monitoring system is segmented into two distinct parts: an environmental temperature sensor that monitors external conditions, and an internal temperature sensor integrated with the item that monitors internal conditions. This segmentation allows both external and internal temperature information to be collected independently, resolving the contradiction between monitoring capability and information availability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The internal temperature sensor and electrochromic indicator are nested within the item structure itself (e.g., embedded in the packaging or container). This nesting enables the internal monitoring system to be integrated into the item without adding significant external complexity, while providing previously unavailable internal temperature information.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If temperature sensing device is integrated into the item, then internal temperature can be monitored, but device complexity increases

Engineering Contradiction:
Improvetemperature monitoring reliabilityVSAvoidsensing device structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The temperature sensor, electrochromic indicator layer, and power source are merged into a single integrated assembly that is attached to or embedded in the item. This merging reduces the number of separate components and simplifies the overall device structure while maintaining reliable internal temperature monitoring capability.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The electrochromic indicator layer changes color in response to temperature variations, providing a visual indication of internal temperature conditions. This color-change mechanism eliminates the need for complex electronic displays or additional signaling components, reducing device complexity while improving reliability through a fail-safe visual warning system.

Inventive Principle:
Principle #32Color changes

3Ease of operation

If electrochromic strip is added for display, then temperature indication is provided, but manufacturing complexity increases

Engineering Contradiction:
Improveuser interfaceVSAvoidassembly process
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The electrochromic strip utilizes electrochromic material that changes color in response to electrical signals from the temperature sensor. This approach provides an intuitive visual interface for users while avoiding complex display electronics, buttons, or screens that would complicate manufacturing. The strip can be applied as a label or integrated layer during the packaging process.

Inventive Principle:
Principle #32Color changes

Solution Approach 2:

The mechanical or electronic display mechanisms (such as digital screens, LEDs, or mechanical gauges) are replaced with an electrochromic strip that provides temperature indication through color changes. This substitution simplifies the manufacturing process by eliminating complex assembly steps while providing clear, easy-to-understand visual feedback to users.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Effectively monitors and communicates the internal temperature of items, enabling users and manufacturers to take necessary measures to protect sensitive contents, ensuring their fitness for consumption.

Implementation Method 1

the sensor is adapted to sense the temperature of the content through the metal crimp

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

an electrochromic strip coupled with the sensor and adapted to display an indication of the temperature value

Methodology Applied
Scientific EffectElectrochromism: Electrochromism

Data Source

PatentEP3862734B1An item and a method for sensing and displaying temperature thereof
Publication Date: 2025.04.16 CARRIER CORP
  • EP3862734B1 patent drawingFigure 1A
  • EP3862734B1 patent drawingFigure 1B
  • EP3862734B1 patent drawingFigure 1C

AI summary

Aspects of the invention are directed towards a system and a method for sensing temperature of an item (102) and displaying temperature thereof. One or more embodiments of the invention describe the method comprising steps of sensing, by a metal crimp (116) coupled with a sensor (114), a temperature of content inside an item (102) and determining a value of the temperature. The method further describes step of displaying an indication of the temperature value on an electrochromic strip (108) coupled with the sensor (114).