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Method and device for adjusting modulation depth of card reader based on genetic algorithm

A genetic algorithm and modulation depth technology, which is applied in the field of adjusting the modulation depth of a card reader based on genetic algorithm, and can solve problems such as affecting the modulation depth and card reading failure.

Active Publication Date: 2020-08-21
HANGZHOU HIKVISION DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the external environment of the card reader changes, such as a metal environment, the modulation depth will be affected and the card reading will fail.

Method used

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  • Method and device for adjusting modulation depth of card reader based on genetic algorithm
  • Method and device for adjusting modulation depth of card reader based on genetic algorithm
  • Method and device for adjusting modulation depth of card reader based on genetic algorithm

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0023] figure 1 It shows a schematic flowchart of a method for adjusting the modulation depth of a card reader based on a genetic algorithm provided by an embodiment of the present application, and the method can be executed by an electronic device, such as a card reader device, a terminal device or a server device. In other words, the m...

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Abstract

The embodiment of the invention provides a method and device for adjusting the modulation depth of a card reader based on a genetic algorithm. The method comprises the steps: based on a genetic algorithm, setting the number of chromosome populations for a register, constructing the number of genes of one chromosome, wherein one gene corresponds to one binary gene value, and assigning the gene value corresponding to the chromosome to an initial array; initially setting the initial array as a parent population of the genetic algorithm; processing the parent population to generate an offspring population; assigning gene values of genes in the offspring population to the register to enable a card reader to perform card reading operation; and when the card reading operation succeeds, replacingthe gene value in the parent population with the gene value of the gene in the offspring population. According to the method and device for adjusting the modulation depth of the card reader based on the genetic algorithm, the card reader can successfully read the card when the external environment of the card reader changes.

Description

technical field [0001] The present application relates to the technical field of card readers, in particular to a method and device for adjusting the modulation depth of a card reader based on a genetic algorithm. Background technique [0002] At present, in the design of radio frequency cards, the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC) have formulated a corresponding international standard for contactless integrated circuit IC cards - ISO / IEC14443. [0003] According to the different ways of sending and receiving signals, ISO / IEC14443-3 defines two card types: Type A (English: TYPEA) card type and Type B (English: TYPEB) card type. Their difference mainly lies in the modulation depth of the carrier and the coding method of the binary number. When the signal is transmitted from the reader to the card, the two transmit the signal through the 13.56Mhz radio frequency carrier. [0004] The TYPEB scheme is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K7/10G06N3/12
CPCG06K7/10009G06N3/126
Inventor 魏凡程建
Owner HANGZHOU HIKVISION DIGITAL TECH