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Temperature monitoring method based on shape memory alloy

A technology of memory alloy and temperature monitoring, which is applied in the monitoring of temperature indication. Based on the field of shape memory alloy monitoring temperature, it can solve the problems of cumbersome setting operation steps, product pollution, and easy to be affected by the environment, so as to achieve stable, reliable and safe measurement results. performance, reliability, and reuse

Inactive Publication Date: 2013-02-27
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, temperature recording instruments based on electronic components (refer to patents: CN201382819, CN201335741) are generally large in size and low in stability, and are easily affected by the environment; May be tampered with, etc.
However, temperature labels based on solutions (reference patent: CN2828772) are expensive, fragile, and have potential risks of contamination to products
In addition, there will inevitably be bumps and collisions during transportation, which may easily cause damage to the above products

Method used

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  • Temperature monitoring method based on shape memory alloy
  • Temperature monitoring method based on shape memory alloy
  • Temperature monitoring method based on shape memory alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for monitoring temperature based on shape memory alloys, comprising the steps of:

[0028] Step 1. Take a strip-shaped nickel-titanium alloy material of suitable size as a temperature indicator label;

[0029] Step 2. Fix the temperature indication label on the outer packaging of the product to be monitored or on the inner wall of the storage and transportation container for real-time monitoring. The temperature range that can be monitored is the austenite transformation start temperature and austenite transformation termination between temperatures;

[0030] Step 3. After the monitoring process is completed, a thermodynamic measurement such as differential scanning calorimetry is performed on the temperature indicating label;

[0031] Step 4. By comparing the results of step 3 with the measurement results of the original temperature indicating label, such as whether there is a peak on the curve, whether the peak is complete, and the temperature corresponding ...

Embodiment 2

[0034] A method for monitoring temperature based on shape memory alloys, comprising the steps of:

[0035] Step 1. Take a block of copper-aluminum-nickel alloy and copper-zinc-aluminum alloy material of suitable size as a temperature indicator label;

[0036] Step 3: After the monitoring process is completed, thermodynamic measurements of differential scanning calorimetry and thermomechanical analysis are performed on the temperature indicating label; the others are the same as those in Embodiment 1, and will not be repeated here.

Embodiment 3

[0038] A method for monitoring temperature based on shape memory alloys, comprising the steps of:

[0039] Step 1. Take a thin-film iron-platinum alloy material of suitable size as a temperature indicator label;

[0040] Step 3: After the monitoring process is completed, a thermodynamic measurement of dynamic mechanical analysis is performed on the temperature indicating label; the others are the same as those in Embodiment 1, and will not be repeated here.

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Abstract

The invention discloses a temperature monitoring method based on shape memory alloy. The method comprises the following steps: step 1, taking a shape memory alloy material with a proper size and a proper shape as a temperature indicating label; step 2, fixing the temperature indicating label onto an external package of a product to be monitored or on the inner wall of a storage and transportation carton for real-time monitoring, wherein a monitorable temperature range is between an Austenite transformation initial temperature and an Austenite transformation final temperature; step 3, ending a monitoring process, and performing thermodynamic measurement on the temperature indicating label; and step 4, comparing a result obtained in step 3 with a measurement result of an original temperature indicating label to judge whether a permissible maximum temperature has been surpassed or not and the surpassing amount. The shape memory alloy material is used as the temperature indicating label to monitor the product to be monitored in real time, so that the method is simple in operation, stable and reliable in measurement result and good in repeatability and is a relatively ideal method for monitoring a whole cold chain process by using a temperature indication system.

Description

technical field [0001] The invention relates to a monitoring method for temperature indication, in particular to a method for monitoring temperature based on a shape memory alloy, and belongs to the field of temperature monitoring and recording. Background technique [0002] As we all know, many products, such as meat, fruits and vegetables, aquatic products, pharmaceuticals, etc., need to strictly control the ambient temperature, especially the maximum temperature, in the process of production, processing, storage, transportation, and sales to prevent product deterioration. The special supply chain system created by this demand is called cold chain. Due to the particularity of this type of product, if the cold chain breaks midway due to some reasons, such as a sudden power failure for a short period of time, it will inevitably affect the quality of the end product; in serious cases, such as the deterioration of medicines, it may even endanger human health. Therefore, judg...

Claims

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Application Information

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IPC IPC(8): G01K11/00
Inventor 孙丽黄为民唐宬
Owner SHENYANG JIANZHU UNIVERSITY