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Phase-change-material-based thermal bar code system and reading method thereof

A phase change material and barcode technology, which is applied in the field of barcode coding, can solve the problems that the shape characteristics cannot be read directly, and the barcode capacity is limited, etc., and achieve the effect of high anti-reverse engineering, easy to use, and low cost

Inactive Publication Date: 2016-12-21
苏明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large volume of the fiber, the barcode capacity provided is extremely limited, and its topographical features cannot be read directly

Method used

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  • Phase-change-material-based thermal bar code system and reading method thereof

Examples

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Embodiment 1

[0052] A thermal barcode system based on phase change materials and its reading method:

[0053] Add more than one of stearic acid (SA), 12-hydroxydodecanoic acid (12-HAD), high polyparaffin 1000 (PW1000) and high polyparaffin 3000 (PW3000) to acetaminophen evenly, A thermal barcode system for obtaining the acetaminophen, wherein the total mass of the tracer is 1-20% of the mass of the acetaminophen;

[0054] Encode the SA, 12-HAD, PW1000, and PW3000 to obtain a thermal code; the thermal code consists of four digits, representing whether SA, 12-HAD, PW1000, and PW3000 exist from left to right, and 1 represents the presence , 0 represents a vacancy, such as 1000 represents the existence of only SA, 12-HAD, PW1000 and PW3000 are vacancies; according to Pascal’s triangle rule, the four phase change materials of SA, 12-HAD, PW1000 and PW3000 can form 15 different phase change materials in total. Thermal codes: 1000, 0100, 0010, 0001, 1100, 1010, 1001, 0110, 0101, 0011, 1110, 1101...

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Abstract

The invention, which belongs to the technical field of bar code coding, discloses a phase-change-material-based thermal bar code system and a reading method thereof. The system comprises a marked object and a tracer agent for the marked object; and the tracer agent is made from more than one kind of phase-change material, wherein each kind of phase-change material has different phase change temperatures. In addition, according to the reading method, after the temperature of a thermal bar code system increases at a V0 temperature rising rate and reaches a preset temperature value, the system is cooled at a V0 cooling rate and the temperature of the system reaches a room temperature value; a thermal detection device reads number and position information of an endothermic peak and an exothermic peak of the tracer agent in the thermal bar code system is read during the temperature rising and cooling processes; according to the information, the type of the tracer agent is determined; and the information and the data in the database are compared to obtain identity information of a marked object. The thermal bar code system has a wide application range; and the reading method has advantages of high simpleness, high accuracy and quick operation.

Description

technical field [0001] The invention relates to a thermal barcode system based on a phase change material and a reading method thereof, belonging to the technical field of barcode coding. Background technique [0002] Stealth (invisible to the naked eye) barcodes can be used to identify criminals or terrorists, document authentication, improve the accuracy of tamper detection and target tracking, thereby providing a revolutionary change in intelligence gathering and surveillance methods to strengthen law enforcement agencies, security Administrative capacity of agencies and intelligence agencies. Many government-issued documents such as ID cards, passports, certificates, revenue stamps, driver's licenses, banknotes and valuable commercial products such as pharmaceuticals, as well as guitar strings and many other items are the target of counterfeiting. Due to the sheer number of such items, there are insufficient methods to verify their authenticity. [0003] Existing ident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/06G06K7/10
CPCG06K19/06G06K7/10
Inventor 苏明侯思超
Owner 苏明
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