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Combined unlocking system based on electrocardiograph signal and method thereof

An electrocardiographic signal and unlocking technology, applied in the field of unlocking, can solve the problems of greater influence of subjective factors, lower accuracy, high electrocardiographic signal, etc., and achieve the effect of reducing the probability of misidentification, less impact, and simple algorithm

Inactive Publication Date: 2017-10-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has high requirements for ECG signals, and the selection of feature points is greatly affected by human subjective factors. Once abnormal ECG activity occurs due to mood changes or sudden illnesses, the accuracy will be greatly reduced.

Method used

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  • Combined unlocking system based on electrocardiograph signal and method thereof
  • Combined unlocking system based on electrocardiograph signal and method thereof
  • Combined unlocking system based on electrocardiograph signal and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] In the combined unlocking method based on ECG signals proposed by the present invention, the low-level unlocking method is as follows: figure 2 shown, including the following steps:

[0042] When the system is initialized, the user selects a low level in the security level;

[0043] The user sets a set of digital passwords as a backup unlocking method under special circumstances;

[0044] The system responds to the ECG signals from both ends of the human limbs to trigger the unlocking interface;

[0045] Adaptive notch filter is used to remove 50Hz and its harmonic interference, and a high-pass filter with a cutoff frequency of 4Hz is used to filter out baseline drift and motion interference;

[0046] The R wave of the ECG signal is identified by means of differential threshold method or wavelet transform;

[0047] During the process of collecting ECG signals, the voice prompts the user with the number of ECG cycles that have been collected;

[0048] The ECG signal...

Embodiment 2

[0051] In the combined unlocking method based on electrocardiographic signals proposed by the present invention, the medium-level unlocking method is as follows: image 3 shown, including the following steps:

[0052] When the system is initialized, the user selects the middle level in the security level;

[0053] The user sets the ECG signal encoding rules, sets the number of ECG signal acquisitions and the number of ECG signals in each acquisition process, such as selecting a total of three acquisitions, the first time is 5 ECG cycles, and the second time is 2 Electric cycle, the third is 3 ECG cycles, and store the template for verification;

[0054] The user sets a set of digital passwords as a backup unlocking method under special circumstances;

[0055] The system responds to the ECG signals from both ends of the human limbs to trigger the unlocking interface;

[0056] Adaptive notch filter is used to remove 50Hz and its harmonic interference, and a high-pass filter w...

Embodiment 3

[0063] In the combined unlocking method based on ECG signals proposed by the present invention, the high-level unlocking method is as follows: Figure 4 shown, including the following steps:

[0064] When the system is initialized, the user selects a high level in the security level;

[0065] The user sets the ECG signal encoding rules, sets the number of ECG signal acquisitions and the number of ECG signals in each acquisition process, such as selecting a total of three acquisitions, the first time is 5 ECG cycles, and the second time is 2 Electrical cycle, the third is 3 ECG cycles;

[0066] The user sets a further encryption method and stores the template. The further encryption method includes but is not limited to digital password, pattern password, voice verification, fingerprint verification, iris verification, vein verification, etc.;

[0067] The user sets a set of digital passwords as a backup unlocking method under special circumstances;

[0068] The system respo...

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Abstract

The invention provides a combined unlocking system based on an electrocardiograph signal and a method thereof. The unlocking system comprises a security level customization module, an electrocardiograph signal acquisition and processing module and a security check module. The unlocking method comprises the following steps: a user selects the security level of the system, stores an unlocking template in the security level customization module, and sets a set of digital passwords as an alternate unlocking method in special cases; the system triggers to enter an unlocking interface in response to electrocardiograph signals from two ends of human body limbs, and processes the acquired electrocardiograph signals; matched unlocking is performed according to the security level set by the user and the stored unlocking template, and the user can unlock by inputting a digital password when an input electrocardiograph signal is not matched with an unlocking verification rule, namely, unlocking is unsuccessful, wherein the password is a preset digital password of the user. The combined unlocking system and the method have the advantages of flexible way, high accuracy, safety, reliability, low equipment cost and wide coverage.

Description

technical field [0001] The invention relates to the field of unlocking, in particular to a combined unlocking system based on electrocardiographic signals and a method thereof. Background technique [0002] With the development of information technology, mobile terminals such as mobile phones, tablet computers, personal digital assistants, e-books and safes, smart locks and other devices that require extremely high security unlocking methods play an increasingly important role in people's lives . How to ensure the security of these devices and unlock them in a reliable and stable way is a very important issue. [0003] Among the traditional unlocking methods, the sliding unlocking method of the touch screen is easy to operate, but the security is low, which is not conducive to the protection of personal information security; the button unlocking of ordinary screens such as safes and smart locks, the password keyboard unlocking method of the touch screen, and graphic unlocki...

Claims

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Application Information

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IPC IPC(8): G07C9/00G06K9/00
CPCG07C9/00174G07C9/00563G06V40/10G06V40/15
Inventor 闫锋顾秀秀胡佳伟杨小伍张丽敏
Owner NANJING UNIV