WO2018166186A1

WO2018166186A1 - Verification method and verification device

Info

Publication number: WO2018166186A1
Application number: PCT/CN2017/104993
Authority: WO
Inventors: 黄邦宇; 黄曦; 朱萸; 耿协全
Original assignee: 华为技术有限公司
Priority date: 2017-03-13
Filing date: 2017-09-30
Publication date: 2018-09-20
Also published as: CN109844746A; CN109844746B

Abstract

Disclosed are a verification method and a verification device for recognizing pulse information about a verifier so as to verify the identity thereof. The method comprises: acquiring first pulse information input by a verifier; acquiring, from the first pulse information, a first value used for characterizing an alternating current (AC) component; matching the first value with a pre-stored second value, wherein the second value is a pre-stored value, used for characterizing an AC component, in second pulse information about a user; and if matching is unsuccessful, verification not being passed. In the technical solution provided in the embodiments of the present application, by means of matching a first value, used for characterizing an AC component, in pulse information about a verifier and a pre-set second value, whether verification is passed is determined, and since a characteristic of the AC component is used, counterfeiting is made more difficult, thereby improving the security of verification.

Description

Authentication method and verification device

This application claims the priority of the Chinese Patent Application, filed on March 13, 2017, to the Chinese Patent Office, Application No. 201710147478.0, entitled "A Method and Apparatus for Identifying True and False Fingerprints", the entire contents of which are incorporated by reference. In this application.

Technical field

The present application relates to the field of intelligent identification, and in particular, to a verification method and a verification device.

Background technique

The fingerprint recognition technology is used to pre-store a person's fingerprint through the verification device and associate the person's fingerprint with his identity. When a fingerprint requiring authentication is detected, the verification device verifies the identity by finding a stored fingerprint that matches the verified fingerprint. Fingerprint recognition technology is becoming more and more widely used in the safety applications of our daily lives.

However, there is a special imitation fingerprint film technology on the market. The fingerprint imitation can obtain the user's fingerprint and copy the user's fingerprint on a similar silica gel material to obtain a fake fingerprint. Since the fake fingerprint is the same as the fingerprint of the user, the fake fingerprint can be verified under the verification device only by the fingerprint, so that the security of the verification device is not guaranteed.

Summary of the invention

The embodiment of the present application provides a verification method and a verification device for identifying a verifier's pulse information to verify its identity.

A first aspect of the embodiments of the present application provides a verification method, the method comprising:

Obtaining the first pulse information input by the verifier, the first pulse information of the verifier is used for the identity of the verifier, and if the identity of the verifier is a user and the identity of the user is qualified to be verified, the verification may be verified. . It should be noted that the user pre-enters the pulse information, and may also pre-enter fingerprint information or secret or other personal or identity information, and store it. When the verifier enters the verification information, if the verifier's information matches the user, The verifier is in the same identity as the user, and the verifier's verification is passed.

After the first pulse information is obtained, a first value representing the AC component is obtained from the first pulse information, and the first pulse information includes a DC component and an AC component. In the embodiment of the present application, the AC component is used. To verify the identity of the verifier, where the AC component is not a value and therefore requires a first value that characterizes the AC component.

The first value can then be matched to a pre-stored second value that is a value that characterizes the AC component in the second pulse information of the pre-stored user. In the embodiment of the present application, the second value of the second pulse information of the user is pre-stored when the user inputs the pulse information.

Finally, if the match is not successful, the verification fails. In some feasible embodiments, the matching of the AC component may be only one of the necessary verification methods. If the matching is unsuccessful, the verification may fail. If the matching is successful, the other verification conditions may continue to be matched.

In some feasible embodiments, the matching of the AC component may also be a sufficient verification mode, that is, if only the AC component matches successfully, the verification passes.

Matching the first value of the characterized AC component in the verifier's pulse information with a preset second value to determine If the verification is passed, the use of the characteristics of the AC component increases the difficulty of counterfeiting, thereby increasing the security of the verification.

In some possible embodiments, the method can be:

Obtaining the first pulse information input by the verifier may obtain the value of the PPG signal of the verifier at N times at different time points, and obtain the value of the N PPG signals as the first pulse information, where N is greater than 2 Integer. And obtaining, by the first pulse information, the first value representing the AC AC component may be a first variance for calculating a value of the N PPG signals, where the first variance is the first value.

Then matching the first value with the pre-stored second value may be comparing a difference between the first variance and the second variance, where the second variance is a variance of values of the pre-stored M PPG signals of the user If the M is a positive integer greater than 2, if the difference is not within the preset range, and the first value does not match the second value, the verification fails. If the difference is within the preset range, the first value and the second value match successfully, then the verification passes.

Since PPG is a typical non-invasive measurement technique and method, the pulsation of blood volume of peripheral microvessels with heartbeat is obtained by real-time tracing the light absorption of the measured part (finger end, earlobe, nose, etc.). The change, and thus the first pulse signal of the verifier can be obtained efficiently by acquiring its PPG signal.

With reference to the first aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the method may further obtain, from the first pulse information, a third value that represents a DC component, and then the third value. Matching with the pre-stored fourth value, the fourth value is a value representing the DC component in the second pulse information of the pre-stored user, and if the matching is unsuccessful, the verification fails.

Specifically, the value of the PPG signal of the verifier can be obtained P times at different time points to obtain a value of P PPG signals, the P is a positive integer greater than 2, and then the value of the P PPG signals is calculated. a mean value, and then comparing the difference between the first mean value and the second mean value, the second mean value being the mean value of the pre-stored M PPG signals of the user, the M being a positive integer greater than 2, if the difference If the first mean value does not match the second mean value, the verification fails. Since the verification is performed by comparing the DC component and/or the AC component in the pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

With reference to the first aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the method may include acquiring first fingerprint information input by the verifier, and then the first fingerprint information and the pre-stored second fingerprint. The information is matched, and the second fingerprint information is fingerprint information of the pre-stored user. If the matching is unsuccessful, the verification fails. Since the verification is performed by comparing the DC component and/or the AC component and/or the fingerprint information in the first pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

Specifically, the L light sources in the photoelectric sensor may be used to emit the detection light, and the L is a positive integer greater than or equal to 2, and the T light sensors in the photoelectric sensor are used to receive the light signal reflected or transmitted by the detection light. Obtaining the first pulse information, the T being a positive integer less than or equal to L. In some possible embodiments, the L is equal to 2, wherein the first photo sensor is configured to receive the reflected or transmitted optical signal after the first light source is illuminated, and the second photo sensor is configured to receive the second light source after the illumination or The transmitted optical signal. Since the acquisition is performed by L light sources of different spectra, it is necessary to consider the PPG signal acquired by each light source, thereby further increasing the difficulty of counterfeiting and enhancing the security of verification.

A second aspect of the embodiments of the present application provides a verification device, where the verification device includes an acquisition module, a processing module, a matching module, and a determination module. The acquiring module acquires the first pulse information input by the verifier, and the processing module obtains a first value representing the AC component from the first pulse information, and the matching module matches the first value with the pre-stored second value, where The second value is a value representing the AC component in the second pulse information of the pre-stored user, and if the matching is unsuccessful, the mode is determined. Block verification did not pass.

The first value representing the AC component in the verifier's pulse information is matched with the preset second value to determine whether the verification is passed. Since the feature of the AC component is used, the difficulty of counterfeiting is increased, thereby increasing the security of verification. Sex.

With reference to the second aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the acquiring module is specifically configured to obtain the value of the PPG signal of the verifier by N times at different time points, and obtain N The value of the PPG signal, the N is a positive integer greater than 2; the processing module is specifically configured to calculate a first variance of the values of the N PPG signals, using the first variance as the first value.

The matching module is specifically configured to compare a difference between the first variance and the second variance, where the second variance is a variance of a value of the pre-stored M PPG signals of the user as the second value, where the M is greater than 2. A positive integer; if the difference is not within the preset range, and the first value does not match the second value, the verification fails. The determining module is further configured to pass the verification if the matching is successful. In addition, if the difference is within a preset range, the first value and the second value match successfully.

With reference to the second aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the processing module obtains, from the first pulse information, a third value that represents a DC component, and the matching module uses the third value. Matching with the pre-stored fourth value, the fourth value is a value representing the DC component in the second pulse information of the pre-stored user. If the matching is unsuccessful, the determining module fails the verification. Since the verification is performed by comparing the DC component and/or the AC component in the pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

With reference to the second aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the acquiring module is further configured to acquire first fingerprint information input by the verifier; the matching module is further used to The fingerprint information is matched with the pre-stored second fingerprint information, and the second fingerprint information is the fingerprint information of the pre-stored user; the determining module is further configured to: if the matching is unsuccessful, the verification fails. Since the verification is performed by comparing the DC component and/or the AC component and/or the fingerprint information in the pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

With reference to the second aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the acquiring module may obtain the PPG signal value of the verifier by P times at different time points, and obtain P PPG signals. The value of P is a positive integer greater than 2; the processing module is specifically configured to calculate a first mean of the values of the P PPG signals. So that the matching module compares the difference between the first mean and the second mean, the second mean being the mean of the values of the pre-stored M PPG signals of the user, the M being a positive integer greater than two. If the difference is not within the preset range, and the first mean is not successfully matched with the second mean, the verification fails.

With reference to the second aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, a photoelectric sensor is configured to acquire pulse information of the verifier, and obtain the first pulse information, where the first pulse information includes L Pulse information, which is a positive integer greater than or equal to 2.

Wherein, the photoelectric sensor comprises the L light sources and T light sensors, wherein the L light sources are used for emitting detection light, and the T light sensors are configured to receive the light signals reflected or transmitted by the detection light to obtain the first a pulse information, the T is A positive integer less than or equal to L.

Since the acquisition is performed by L light sources of different spectra, it is necessary to consider the PPG signal acquired by each light source, so

A third aspect of embodiments of the present application provides a verification device including a touch screen, one or more processors, a memory, and one or more applications, wherein the touch screen includes a touch-sensitive surface and a display, wherein the one or more The program is stored in the memory, the one or more programs including instructions that, when executed by the electronic device, cause the electronic device to perform the following steps:

Obtaining a first pulse information input by the verifier, obtaining a first value representing the AC component from the first pulse information, and matching the first value with a pre-stored second value, where the second value is a pre-stored user's The value of the AC component is represented in the second pulse information. If the matching is unsuccessful, the verification fails.

With reference to the third aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, in the step of acquiring the first pulse information input by the verifier, the at least one processor executes the plurality of instructions to make the terminal at least Perform the following steps:

Obtaining the value of the verifier's PPG signal N times at different time points respectively, obtaining a value of N PPG signals, the N being a positive integer greater than 2, and calculating a first variance of the values of the N PPG signals to Using the first variance as the first value, comparing a difference between the first variance and the second variance, where the second variance is a variance of a value of the pre-stored M PPG signals of the user as the second value, The M is a positive integer greater than 2. If the difference is not within the preset range, and the first value does not match the second value, the verification fails. If the difference is within a preset range, the first value and the second value are successfully matched.

With reference to the third aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, the at least one processor executes the instructions to enable the input device to perform the following steps:

Obtaining a third value representing the DC component from the first pulse information, and matching the third value with a pre-stored fourth value, wherein the fourth value is a value representing the DC component in the second pulse information of the pre-stored user, If the match is not successful, the verification does not pass. Since the verification is performed by comparing the DC component and/or the AC component in the pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

Obtaining the value of the PPG signal of the verifier at P times at different time points respectively, obtaining a value of P PPG signals, the P being a positive integer greater than 2, and calculating a first mean value of the values of the P PPG signals, The first mean value is used as the third value, and the difference between the first mean value and the second mean value is compared. The second mean value is the average value of the values of the pre-stored M PPG signals of the user as the fourth value, where the M is A positive integer greater than 2; if the difference is not within the preset range, and the third value does not match the fourth value, the verification fails.

Since PPG is a typical non-invasive measurement technique and method, the measured part (finger end, ear) is recorded in real time. The light absorption amount of the sag, the nose, and the like is used to obtain the pulsation change of the blood volume of the peripheral microvessel with the heart beat, and thus the first pulse signal of the verifier can be obtained efficiently by acquiring the PPG signal thereof.

With reference to the third aspect of the embodiments of the present application, in an implementation manner of the embodiment of the present application, in the step of acquiring the pulse information of the verifier by using the photosensor, the at least one processor executes the instructions to make the terminal Perform at least the following steps:

Using the L light sources in the photoelectric sensor to emit detection light, the L is a positive integer greater than or equal to 2, and the T light sensors in the photoelectric sensor receive the light signal reflected or transmitted by the detection light to obtain the light signal. The first pulse information, the T being a positive integer less than or equal to L. Specifically, the L may be equal to 2, wherein the first photo sensor is configured to receive the reflected or transmitted optical signal after the first light source is irradiated, and the second photo sensor is configured to receive the reflected or transmitted light after the second light source is irradiated. Optical signal.

Since the acquisition is performed by L light sources of different spectra, it is necessary to consider the PPG signal acquired by each light source, thereby further increasing the difficulty of counterfeiting and enhancing the security of verification.

Acquiring the first fingerprint information input by the verifier, and matching the first fingerprint information with the pre-stored second fingerprint information, where the second fingerprint information is pre-stored fingerprint information of the user. If the matching is unsuccessful, the verification fails. .

Since the verification is performed by comparing the DC component and/or the AC component and/or the fingerprint information in the pulse information of the verifier and the user, the difficulty of counterfeiting is increased, and the security of the verification is enhanced.

A fourth aspect of the embodiments of the present application provides a computer program product that, when run on a verification device, causes the verification device to perform the methods of the above aspects.

A fifth aspect of embodiments of the present application provides a computer readable storage medium comprising instructions that, when executed on a verification device, cause the verification device to perform the methods of the above aspects.

In the technical solution provided by the embodiment of the present application, the first value representing the AC component in the pulse information of the verifier is matched with the preset second value to determine whether the verification is passed, and the feature is increased due to the use of the AC component. The difficulty of counterfeiting increases the security of verification.

DRAWINGS

Figure 1-1 is a schematic diagram of a fingerprint;

Figure 1-2 is a schematic diagram of a verifier using a fingerprint to attempt fingerprint verification through a mobile phone;

Figure 1-3 is a schematic diagram of a mobile phone structure;

Figure 1-4 is a schematic diagram of the access control machine verifying the fingerprint;

Figure 1-5 is a schematic diagram of the imitation fingerprint of the silica gel material;

Figure 1-6 is a schematic diagram of the verifier using the fingerprint to verify the fingerprint on the mobile phone and the access control machine;

Figure 2-1 is a schematic diagram of a verification method;

2-2 is another schematic diagram of a verification method;

Figure 2-3 is a schematic diagram of a verification device;

Figure 3-1 is a schematic diagram of obtaining a user pulse signal under PPG technology;

Figure 3-2 is a schematic diagram of a PPG waveform diagram;

Figure 3-3 is a schematic diagram of a PPG waveform diagram of an electrocardiogram using a wavy line to simplify replacement;

Figure 3-4 is a schematic diagram of a fingerprint identification terminal acquiring a pulse signal;

Figure 3-5 is a PPG waveform diagram with ordinates as light absorbance;

Figure 3-6 is a schematic diagram of the internal structure of the fingerprint touch panel;

3-7 are schematic diagrams showing the working principle of various components of the fingerprint touch panel;

3-8 is a schematic diagram of acquiring a second pulse information of a user by a fingerprint touch panel;

Figure 4-1 is a schematic diagram of a PPG waveform diagram of a pulse signal passing through a user;

4-2 is a schematic diagram of a verifier performing fingerprint verification on a fingerprint identification terminal;

4-3 is a schematic diagram of a verifier using a prosthetic finger for fingerprint verification on a fingerprint identification terminal;

Figure 4-4 is a schematic diagram of the verifier performing fingerprint verification on the fingerprint identification terminal;

4-5 is another schematic diagram of the verifier performing fingerprint verification on the fingerprint identification terminal;

Figure 5-1 is a schematic flowchart of fingerprint input by a fingerprint identification terminal;

FIG. 5-2 is a schematic flowchart of a fingerprint identification terminal verifying a fingerprint;

Figure 5-3 is a schematic flow chart of extracting features;

Figure 5-4 is a schematic diagram of two different PPG waveforms illuminated using two different spectral sources;

Figure 5-5 is a schematic flow diagram of two different spectral light sources sequentially lit and extinguished to collect PPG signals;

Figure 5-6 is a schematic diagram of the layout of led1, led2 and PD;

5-7 are schematic diagrams of another layout of led1, led2, and PD;

Figure 5-8 is a schematic diagram of the layout of led1, led2, and PD1, PD2;

Figure 6-1 shows the flow chart of the operation of the access control machine;

Figure 6-2 is a schematic diagram of the user placing a finger on the fingerprint recognition area of the access control machine;

6-3 is a schematic diagram of the fingerprint recognition terminal lighting LED1;

Figure 6-4 is a schematic diagram of the fingerprint recognition terminal lighting LED2.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

The terms "first", "second", "third", "fourth", etc. (if present) in the specification and claims of the present application and the above figures are used to distinguish similar objects without having to use To describe a specific order or order. It is to be understood that the data so used may be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than what is illustrated or described herein. In addition, the terms "comprises" and "comprises" and "the" and "the" are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or device that comprises a series of steps or units is not necessarily limited to Those steps or units may include other steps or units not explicitly listed or inherent to such processes, methods, products or devices.

Each person's fingerprint is different in pattern, breakpoint and intersection (as shown in Figure 1-1, is a fingerprint diagram), so that each person's fingerprint is unique and life-changing, relying on this uniqueness and Stability, fingerprint recognition technology is becoming more and more widely used in the safety applications of our daily lives. At present, the fingerprint identification terminal can use the fingerprint identification technology to receive the fingerprint of one or more users, and receive the identity information input by the user, and associate the identity information of the user with the fingerprint. Come. When the verification device detects the verification fingerprint of the verifier, if the fingerprint of the verification fingerprint and the stored user is searched for the fingerprint of the matching stored user, the identity of the verifier is the user, and the fingerprint can be passed. Verify, for the next step, such as through access control, open the phone screen or further verification, etc., not limited here.

In the embodiment of the present application, the fingerprint identification terminal may include any terminal device such as a mobile phone, a access control device, a payment terminal, a tablet computer, a personal digital assistant (PDA), a point of sales (POS), a vehicle-mounted computer, and the like. . Taking a mobile phone as an example, the mobile phone can have a built-in fingerprint unlocking function. Specifically, a fingerprint touchpad can be built in. When the user attempts to operate the mobile phone, the fingerprint can be input on the fingerprint touchpad in the mobile phone, and the mobile phone can verify the fingerprint. Verification, you can perform further operations, such as opening the screen. In some feasible embodiments, it is not necessary to display “Please input fingerprint”, and the user can directly touch the fingerprint touch screen when the mobile phone is in the off state, so that the mobile phone obtains the fingerprint of the user and verifies the identity thereof. Not limited. In some feasible embodiments, the position of the fingerprint touch panel may be in the screen or an area specially set on the back of the mobile phone, which is not limited herein.

It should be noted that the fingerprint of the user acquired by the mobile phone may include two situations, one is to input a fingerprint, and the other is to verify a fingerprint. When the fingerprint is entered, the mobile phone can obtain the fingerprint of the user through the fingerprint touch panel, extract the feature of the fingerprint and store it. In the case of verifying the fingerprint, after the verification fingerprint of the verifier is obtained, the feature is extracted, and the stored matching fingerprint is searched according to the features. If found, the identity of the owner of the verification fingerprint is the same as the fingerprint input. People can pass the verification. In some feasible embodiments, after the mobile phone obtains the user's input fingerprint, the mobile phone may receive the identity information input by the user, and associate the input fingerprint with the identity information, such as name, gender, position, job number, etc. Corresponding to the biometric information such as the iris of the user, so that when the user passes the verification by using the fingerprint, information matching the identity of the user can be read.

As shown in Figure 1-2, the certifier uses the fingerprint to attempt to verify the fingerprint of the mobile phone. When the certifier wants to use the fingerprint for verification, you can click the main control button, or the switch button, or the volume adjustment button, or use the voice. Bring up the voice assistant (such as Apple's siri function), the phone can display the graphic and / or text prompt "Please enter the fingerprint" on the screen, or not prompt any text, here is not limited, the verifier puts the finger On the back fingerprint touchpad, the mobile phone can obtain the verifier's fingerprint, and then the matching fingerprint can be found from the stored user's fingerprint. If a matching fingerprint is found, the verification fingerprint is verified by the fingerprint, and further operations can be performed in the mobile phone, such as unlocking the mobile phone and displaying “fingerprint unlocking success”, or further performing other verification, such as voice verification, etc., here. Not limited. In contrast, if the corresponding preset fingerprint is not matched with the verification fingerprint, the prompt may not be displayed, and the prompt “verification failed” or “please input fingerprint again” may be displayed, which is not limited herein. In some feasible embodiments, the preset fingerprint may be more than one, and may have fingerprints of multiple fingers, such as a thumb, an index finger, a middle finger, a ring finger, a tail finger, and both right and left hands, and the fingerprint of the hand. There can be ten fingerprints.

In the embodiment of the present application, the structure of the mobile phone can be as shown in FIG. 1-3 (FIG. 1-3, schematic diagram of the mobile phone structure), including: radio frequency (RF) circuit A-10, memory A-20, input. Unit A-30, display unit A-40, sensor A-50, audio circuit A-60, wireless fidelity (Wi-Fi) module A-70, processor A-80, power supply A-90, etc. component. It will be understood by those skilled in the art that the structure of the handset shown in the figures does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.

The RF circuit A-10 can be used for transmitting and receiving information or during a call, receiving and transmitting signals, in particular, After the downlink information is received, it is processed by the processor A-80; in addition, the designed uplink data is sent to the base station. Generally, RF circuit A-10 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like. In addition, the RF circuit A-10 can also communicate with the network and other devices through wireless communication. The above wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division). Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), E-mail, Short Messaging Service (SMS), and the like.

The memory A-20 can be used to store software programs and modules, and the processor A-80 executes various functional applications and data processing of the mobile phone by running software programs and modules stored in the memory A-20. The memory A-20 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the storage data area may be Stores data created based on the use of the phone (such as audio data, phone book, etc.). Further, the memory A-20 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, a flash memory device, or other volatile solid state storage device.

Input unit A-30 can be used to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the handset. Specifically, the input unit A-30 may include the touch panel A-31 and other VR devices A-32. Touch panel A-31, also known as touch screen, can collect touch operations on or near the user (such as the user using any suitable object or accessory such as a finger or a stylus on the touch panel A-31 or in touch The operation near the panel A-31), and the corresponding connecting device is driven according to a preset program. Optionally, the touch panel A-31 may include two parts: a touch detection device and a touch controller. Wherein, the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information. The processor A-80 is provided and can receive commands from the processor A-80 and execute them. In addition, the touch panel A-31 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel A-31, the input unit A-30 may also include other VR devices A-32. Specifically, other VR devices A-32 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.

The display unit A-40 can be used to display information input by the user or information provided to the user as well as various menus of the mobile phone. The display unit A-40 may include a display panel A-41. Alternatively, the display panel A-41 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like. . Further, the touch panel A-31 can cover the display panel A-41, and when the touch panel A-31 detects a touch operation on or near it, it is transmitted to the processor A-80 to determine the type of the touch event. Processor A-80 then provides a corresponding visual output on display panel A-41 depending on the type of touch event. Although in FIG. 5-3, the touch panel A-31 and the display panel A-41 are used as two independent components to implement the input and input functions of the mobile phone, in some embodiments, the touch panel A may be used. The -31 integrates with the display panel A-41 to realize the input and output functions of the mobile phone.

The handset may also include at least one sensor A-50, such as a photo sensor, a light sensor, a motion sensor, and other sensors. The photosensor can be, for example, a photodiode (PD). A photosensor device in which a PD converts an optical signal into an electrical signal in a circuit. The PD operates under reverse voltage. When there is no light, the reverse current is extremely small. Weak, called dark current; when there is light, the reverse current rapidly increases to tens of microamps, called photocurrent. The greater the intensity of the light, the greater the reverse current. The change in light causes a change in the photodiode current, which converts the optical signal into an electrical signal. Specifically, the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display panel A-41 according to the brightness of the ambient light, and the proximity sensor may close the display panel A when the mobile phone moves to the ear. -41 and / or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity. It can be used to identify the gesture of the mobile phone (such as horizontal and vertical screen switching, related Game, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; as for the mobile phone can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors, no longer Narration.

Audio circuit A-60, speaker A-61, and microphone A-62 provide an audio interface between the user and the handset. The audio circuit A-60 can transmit the converted electrical signal of the received audio data to the speaker A-61, and convert it into a sound signal output by the speaker A-61; on the other hand, the microphone A-62 converts the collected sound signal. The electrical signal is received by the audio circuit A-60 and converted into audio data, and then processed by the audio data output processor A-80, sent to another mobile phone via the RF circuit A-10, or output audio data to Memory A-20 for further processing.

Wi-Fi is a short-range wireless transmission technology. The mobile phone through the Wi-Fi module A-70 can help users to send and receive e-mail, browse the web and access streaming media, etc. It provides users with wireless broadband Internet access. Although FIG. 5-3 shows the Wi-Fi module A-70, it can be understood that it does not belong to the essential configuration of the mobile phone, and can be omitted as needed within the scope of not changing the essence of the invention.

The processor A-80 is the control center of the mobile phone, and connects various parts of the entire mobile phone by using various interfaces and lines, by running or executing software programs and/or modules stored in the memory A-20, and calling the memory in the memory A- The data in 20, the various functions of the mobile phone and the processing of data, so as to monitor the mobile phone as a whole. Optionally, the processor A-80 may include one or more processing units; preferably, the processor A-80 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system and a user interface. And applications, etc., the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor A-80.

The mobile phone also includes a power source A-90 (such as a battery) for powering various components. Preferably, the power source can be logically connected to the processor A-80 through a power management system to manage charging, discharging, and power management through the power management system. And other functions. Although not shown, the mobile phone may further include a camera, a Bluetooth module, and the like, and details are not described herein again.

In some feasible embodiments, the fingerprint identification terminal may also be an access control device. The following uses an access control device as an example for description. The access control system is part of the access control system. The access control system is also called the access management control system. It is an intelligent management system for management personnel to enter and exit. Common access control systems include: password access control system, non-contact card access control system, fingerprint iris palm type biometric access control system and face recognition access control attendance system. The access control system is widely used in management control systems. Specifically, the process of collecting, identifying, and verifying the fingerprint of the access control device is similar to the process of collecting, identifying, and verifying the mobile phone, and is not described herein. As shown in Figure 1-4 (Figure 1-4, the access control machine verifies the fingerprint), the access control can display "Please enter the fingerprint". When the verifier is in the process of inputting the fingerprint, the access control can display the "authentication fingerprint... "When the fingerprint verification is passed, the access control machine can display "Verification Pass". In some scenarios, fingerprints can also be used for fingerprint verification, such as in some yoga studios or steam saunas in gyms, where it is inconvenient to brush the fingerprints of fingers, such as fitness equipment or beverages. The fingerprint of the toe can be used as the verification fingerprint, which is not limited herein. In the embodiment of the present application, since the fingerprint storage and reading of the finger and the principle of storing and reading the toe are consistent, In this article, the fingerprint of the finger is used for discussion below, and the toe portion is not further described in detail, so as not to be described.

However, there are currently special techniques for copying fingerprints. The fingerprint imitation person using the technology can copy the fingerprint pattern of the user, and can copy the fingerprint on the similar silica gel material to obtain the imitation fingerprint with the same texture as the fingerprint of the user (as shown in FIG. 1-5, a schematic diagram of the imitation fingerprint of the silica gel material). ). If the user stores the fingerprint and the identity in the fingerprint identification mobile phone or the access control machine, if the user of the fake fingerprint uses the fake fingerprint to perform verification on the mobile phone or the access control machine, since the copied fingerprint is the same as the fingerprint of the user, The mobile phone or the access control machine only performs fingerprint verification by using the texture of the fingerprint as a voucher, and mistakes the identity of the user of the fake fingerprint as the user, and the mobile phone or the access control device allows the fake fingerprint to pass the verification (Fig. 1) 6, for the verifier to use the imitation fingerprint on the mobile phone and the access control through the fingerprint verification diagram), so that the original intention to use the unique characteristics of the human body fingerprint authentication security is not guaranteed.

In the embodiment of the present application, in order to improve the security of the fingerprint verification technology, a fingerprint verification method is provided, which simultaneously identifies the fingerprint of the user and the pulse signal of the user. Specifically, when the user enters the fingerprint, in addition to acquiring the fingerprint of the user, the pulse signal of the user may be acquired, so that when the verification fingerprint is detected, in addition to identifying the fingerprint of the verifier, the verifier's pulse signal may also be identified. Under such identification technology, when the verifier carries the fake fingerprint to verify in the mobile phone or the access control machine, in addition to the texture of the fingerprint needs to be the same as the user who is copied the fingerprint, the pulse signal needs to be the same as the user who is copied the fingerprint, otherwise Failure to pass the verification greatly improves the difficulty of the counterfeiter's verification, and greatly improves the security of the fingerprint recognition.

In order to acquire and verify the user's pulse signal, PhotoPlethysmoGram (PPG) technology can be used. PPG is a typical non-invasive measurement technique and method. By real-time tracing the light absorption of the measured part (finger end, earlobe, nose, etc.), the pulsatile change of the blood volume of the peripheral microvessels with the heart beat is obtained. , get the pulse signal. The fingerprint identification terminal uses the PPG technology to associate the pulse signal of the user, the fingerprint of the user, and the identity information of the user. When the verification fingerprint of the verifier is detected, in addition to verifying the verification fingerprint, the verification prover needs to obtain the verifier. Verifying the pulse signal, extracting the characteristics of the verification pulse signal, finding a matching stored pulse signal, and if a matching pulse signal is found, and the user identity of the matched pulse signal is the same as the user identity of the verification fingerprint, then it may be determined Verification by fingerprint.

In some feasible embodiments, a mobile phone or an access control device can verify only the pulse signal of the verifier, and can simultaneously verify the fingerprint and the pulse signal, which are not limited herein. When it is necessary to verify the fingerprint and the pulse signal at the same time, the order of verifying the two may be to verify the fingerprint first. If the fingerprint passes, the pulse signal is compared, if it passes, the authentication is passed; if the fingerprint does not pass, the comparison does not need to be continued. Pulse signal.

In some feasible embodiments, the fingerprint and the pulse signal can also be separately calibrated separately, and only if both are authenticated and both point to the identity of the same user, the authentication can be passed. The pulse signal can also be verified first. If the fingerprint is verified, the order is not limited.

It should be noted that the so-called fingerprint "match" or pulse signal "match" does not mean that the fingerprints or pulse signals of the two are exactly the same. It should be noted that even if the same person inputs the fingerprint of the same finger twice, it will not be exactly the same. The matching of the two (fingerprint or pulse signal) refers to extracting features when the information is input, and obtaining the characteristics of the information when verifying, by searching whether the stored information has the identity of the feature that satisfies the verified information, and if so, it can be considered Is a match, then the certifier's identity is the user.

In the technical solution provided by the embodiment of the present application, the first value representing the AC component in the pulse information of the verifier can be matched with the preset second value, where the second value is the characteristic of the pre-stored user's pulse information. The value of the component, to be Whether the verification is passed or not, because the characteristics of the AC component are used for verification, the difficulty of counterfeiting is increased, thereby increasing the security of verification.

Specifically, refer to FIG. 2-1, which is a schematic diagram of a verification method, where the verification method includes:

101. Acquire first pulse information input by the verifier. The verifier's first pulse information is used for the identity of the verifier, and if the verifier's identity is a user and the user's identity is eligible for verification, then the verification can be passed.

102. Obtain a first value that represents an AC AC component from the first pulse information. This feature of the AC component verifies the identity of the verifier, where the AC component is not a value and therefore requires a first value that characterizes the AC component.

103. Match the first value with a pre-stored second value, where the second value is a value representing the AC component in the second pulse information of the pre-stored user.

104. If the match is unsuccessful, the verification fails. In some feasible embodiments, the matching of the AC component may be only one of the necessary verification methods. If the matching is unsuccessful, the verification may fail. If the matching is successful, the other verification conditions may continue to be matched.

Please refer to FIG. 2-2, which is another schematic diagram of a verification method, which includes:

201. Acquire first fingerprint information input by the verifier.

In the embodiment of the present application, the verifier can input its own first fingerprint information on the verification device, and the verification device can be a certain fingerprint identification device, such as a mobile phone or an access control device, which is not limited herein. The first fingerprint information of the verifier may be the fingerprint information of any one of the ten fingers, or the fingerprint information of the other person imitation by the silicone material, and is put on the hand to attempt verification.

202. Using two light sources of different spectra to emit detection light N times at different time points.

When the verifier puts a finger or other part into the verification area of the verification device, taking the finger as an example, the verification device can respectively illuminate the finger through two different spectral light sources, since the first pulse signal of the verifier is obtained.

203. Receive, by using two photo sensors, the optical signal reflected or transmitted by the detecting light to obtain a value of 2 N pieces of PPG signals, where N is an integer greater than 2, wherein the first photo sensor is configured to receive the first The light signal reflected or transmitted after the light source is irradiated, and the second light sensor is configured to receive the light signal reflected or transmitted after the second light source is irradiated.

The verification device has two light sensors for receiving the light reflected or projected by the two different spectral light sources in the step 202 after being irradiated on the finger, and after the N times of illumination, the optical signal is converted into an electrical signal, and the obtained light signal is obtained. The value of 2 N PPG signals is used as the PPG information as the first pulse information of the user.

2041. Calculate a first variance of values of the N PPG signals.

In the embodiment of the present application, the PPG signal includes information of a DC component and information of an AC component, wherein in order to characterize the AC component, a first variance of the acquired PPG signal may be calculated N to obtain a first value that characterizes the AC component.

2042. Compare a difference between the first variance and a second variance, where the variance of the values of the pre-stored M PPG signals of the user is the second value, where M is a positive integer greater than 2.

In the embodiment of the present application, since the value of the AC component of one or more users is stored in advance, because the user has previously entered his own fingerprint information and PPG information, where the PPG information includes the AC component, the AC will be characterized. The value of the component is the variance of the M PPG signals of the user acquired in advance, and as the second value, the first value and the second value may be compared to determine whether the verifier and the user are the same person.

2043. If the difference is not within the preset range, the verification does not pass.

Specifically, the difference between the first value and the second value may be calculated to see if the difference is within a preset range, if not, If the verification is not passed, if it is within the range, other information, such as a value representing the DC component, or a fingerprint, or a password, may be determined, which is not limited herein.

2044. If the difference is within a preset range, the verification is passed.

In some feasible embodiments, if the difference is within a preset range, it is determined that the user and the verifier are the same person, and no other information needs to be verified, which is not limited herein.

2051. Calculate a first mean value of values of the N PPG signals.

Since the PPG signal includes information of the AC component and information of the DC component, it is also possible to characterize the DC component by a value, which is called a third value. In some possible embodiments, a first average of the N PPG signals may be obtained as a third value, the third value being used for comparison with the pre-stored value to verify whether the identity of the verifier and the user are the same people.

2052. Compare a difference between the first mean value and a second mean value, where the mean value of the pre-stored M PPG signals of the user is the fourth value, and the M is a positive integer greater than 2.

The second mean is the mean of the M PPG signals of the pre-stored user, also referred to as the fourth value. It should be noted that M may be equal to N or not equal to, and is not limited herein. By comparing the first mean and the second mean, the difference between the two is obtained.

2053. If the difference is not within the preset range, the verification does not pass.

After the difference is obtained, it can be judged whether the difference is within a preset range, and if not, the verification does not pass.

2054. If the difference is within a preset range, the verification is passed.

If the difference between the values of the AC components is within the preset range, it may be determined that the verification passes, or further determines other messages, which are not limited herein.

2061: Match the first fingerprint information with the pre-stored second fingerprint information, where the second fingerprint information is pre-stored fingerprint information of the user.

In some feasible embodiments, the first fingerprint information may be further matched with the pre-stored second fingerprint information, where the fingerprint information is fingerprint information pre-recorded by the user.

2062. If the matching is unsuccessful, the verification fails.

It should be noted that, in the embodiment of the present application, it is mandatory for the verifier to verify the AC component of the pulse information, and the DC component in the verification pulse information and the fingerprint information of the verifier are optional. .

In the technical solution provided by the embodiment of the present application, the first value representing the AC component in the pulse information of the verifier is compared with the preset second value, and the third value and the fourth value of the DC component are matched, Or matching the verifier's first fingerprint information and the pre-stored second fingerprint information to determine whether the verification is passed, which increases the difficulty of counterfeiting, thereby increasing the security of the verification.

It should be noted that the pulse signal of the PPG technique includes a slowly varying direct current (DC) component associated with tissue structure and blood flow and an alternating current (AC) component of the pulsating change. The absorbance of non-blood tissue such as muscles and bones in biological tissues remains unchanged. The absorbance of venous blood in blood tissue can also be considered to be relatively stable, and they have a major contribution to the DC component. In the blood, the fluctuation of venous blood is very weak relative to arterial blood, which can be neglected. Therefore, it can be considered that the AC component of the pulsation change is mainly caused by the filling of arterial blood, and then it is detected through the detection of a constant wavelength light source. The light intensity of the finger can indirectly measure the pulse signal of the human body. It should be noted that the amplitude of the AC component is generally 1% to 2% of the DC component, and is superimposed on the DC component.

Please refer to FIG. 3-1 (FIG. 3-1, a schematic diagram of obtaining a user pulse signal under the PPG technology), in the embodiment of the present application. When the fingerprint recognition terminal uses the PPG technology to input or verify the fingerprint of the user, the light emitting diode (LED) can be used to illuminate, reflect or project to the photodiode (PD), and the PD according to the received light. Determine the user's pulse signal. In general, LED lights can be used in both transmissive and reflective modes. In some access control machines, transmissive type is used. In mobile phones, reflective type is generally used. In the embodiment of the present application, reflective type is taken as an example. Description.

It should be noted that when the fingerprint recognition terminal has the function of PPG technology to recognize the pulse signal, the fingerprint sensing area, the light source and the light sensor can be built in. The fingerprint sensing area is used to sense the user's finger to obtain the user's fingerprint information, the light source is used to emit light to illuminate the finger, and the light sensor is used to receive the light emitted by the light source and reflected by the light, or the light projected by the light source to generate a digital signal.

Specifically, when the LED light is directed to the skin, the light reflected back through the skin tissue is received by the photosensitive sensor and converted into an electrical signal and then converted into a digital signal, and the simplified process is: optical signal -> electrical signal -> digital signal. When the light passes through the skin tissue and then the light is attenuated when it is reflected to the photosensor, the absorption of light by muscles, bones or veins and other connected tissues is basically the same, but there is blood in the blood due to the arteries. Flow, then the absorption of light naturally changes, when the light is converted into a PPG signal, it can reflect the characteristics of blood flow. The PPG waveform diagram shown in Figure 3-2 is the pulse wave signal converted from the electrical signal acquired by the PD. (Figure 3-2, a schematic diagram of the PPG waveform diagram). In the PPG waveform diagram, the abscissa is time and the ordinate is the received light intensity. It should be noted that the waveform of the PPG is composed of a direct current (DC) component and an alternating current (AC) component, and the DC component corresponds to the detected light signal transmitted or reflected from the tissue, depending on the structure of the tissue and the arterial and venous blood. The mean blood flow, the DC component changes slowly with breathing; the AC component shows the change in blood volume between the systolic and diastolic phases of the cardiac cycle, and the fundamental frequency of the AC component depends on the heart rate and is superimposed on the DC component.

In the embodiment of the present application, for better description, the PPG waveform diagram can be simplified as shown in FIG. 3-3 (FIG. 3-3, which is a schematic diagram of a PPG waveform diagram of an electrocardiogram using a wavy line to simplify the replacement).

It should be noted that, as shown in FIG. 3-4 (FIG. 3-4, a schematic diagram of acquiring a pulse signal by the fingerprint identification terminal), when the fingerprint recognition terminal detects the finger, the light intensity reflected by the PPG changes according to the pulse of the user. The user's pulse signal, when the fingerprint recognition terminal does not detect the finger, the light intensity reflected by the PPG is theoretically zero, but since there are some other disturbing light in the natural environment, the detected light intensity is not zero. Here, it is assumed that the light intensity is a fixed value.

In some feasible embodiments, the ordinate of the PPG waveform can also be the light absorbance, that is, the degree of absorption of the reflected light by the finger, as shown in FIG. 3-5 (Fig. 3-5, the ordinate is the light absorbance). The PPG waveform diagram), in general, is more common in the representation of such waveform diagrams, which will be described in the following discussion.

In some possible embodiments, as shown in FIG. 3-6 (FIG. 3-6 is a schematic diagram of the internal structure of the fingerprint touch panel), the fingerprint touch panel may include an isolation material, an Active Front End (AFE). , an application specific integrated circuit (ASIC) and a connection line. As shown in Figure 3-7 (Figure 3-7 is a schematic diagram of the working principle of the various components of the fingerprint touch panel), wherein the isolation material is used to prevent the PD from receiving the scattered light in the integrated device, and the AFE is used to drive the control LED, PD The ASIC is used to calculate/retain/contrast the fingerprint feature value, control the fingerprint sensor, control the AFE to acquire the PPG signal, calculate the characteristic value of the PPG signal, determine whether it is a real living body, and output the result through the connection line, and the connection line is used for power supply. And used for the external input and output interface of the ASIC, as shown in Figure 3-8 (Figure 3-8 is a schematic diagram of the fingerprint touchpad to obtain the user's second pulse information), when the fingerprint touchpad When you touch the user's finger, the related work is performed.

The structural details and working modes of the fingerprint sensor and the PD inside the mobile phone are the prior art in the prior art. For details, refer to the Chinese patent document published as CN107004126A, wherein paragraphs 89 to 94 of the specification and FIG. 5A to FIG. 5B describe An optical sensor integrated within a capacitive sensing pixel, paragraphs 97 through 108 of the specification, and FIGS. 7A-7C depict circuit diagrams of an exemplary hybrid fingerprint sensing element or pixel 700, wherein the hybrid fingerprint sensing element or pixel is simultaneously Capacitive sensing and optical sensing functions with fingerprints, paragraphs 112 through 116 and Figures 9A-9B depict in vivo fingerprint detection based on blood light absorption at different optical wavelengths. For more specific internal components and their implementation, please refer to other relevant parts of this patent document.

In the embodiment of the present application, in the process of using the PGG technology, the fingerprint recognition technology not only recognizes its DC component, but also recognizes its AC component, so that the fake fingerprint needs not only the verification of the DC component but also the verification of the AC component, unless the imitation is performed. The optical characteristics of the fingerprint are made to be exactly the same as the skin of the user. Otherwise, the waveform characteristics of the PGG and the characteristics of the user's real PPG waveform are difficult to be consistent, which greatly increases the difficulty of fingerprint fraud.

The AC and DC in the PGG will be separately described below with reference to the accompanying drawings. It is assumed that the fingerprint recognition terminal acquires the fingerprint of the user and its pulse signal in advance, wherein the PPG waveform diagram includes a DC component and an AC component, as shown in FIG. 4-1 (FIG. 4-1, a schematic diagram of a PPG waveform diagram of a pulse signal passing through the user). . Wherein, the DC component can be expressed as an interval [L, L+R], and if the DC component of the detected verification fingerprint is in the interval [L, L+R], the DC component can be considered to be matched, and the AC component is represented. The image in the R interval can be considered to be matched when the feature of the AC component of the verification fingerprint is similar to the feature of the image in the R interval.

As shown in Figure 4-2 (Figure 4-2, which is a schematic diagram of the verifier performing fingerprint verification on the fingerprint identification terminal), when the verifier puts a finger on the fingerprint identification area of the fingerprint identification terminal, the fingerprint recognition terminal detects the PPG signal. If the detected PPG waveform is shown by its dotted line, and its DC component does not match the input fingerprint stored by the user in Figure 4-1, it can be considered that the verifier is inconsistent with the identity of the user, and then fails. verification.

As shown in Figure 4-3 (Figure 4-3, which is a schematic diagram of the verifier using the prosthetic finger for fingerprint verification on the fingerprint identification terminal), when the verifier puts the finger on the fingerprint identification area of the fingerprint identification terminal, the fingerprint identification The terminal detects the PPG signal. If the detected PPG waveform is shown by its dotted line, its DC component matches the input fingerprint stored by the user in FIG. 4-1, but the AC component is not detected, and the finger is considered to be not a living body. If the prosthesis made of material is used, it will not pass the verification.

As shown in Figure 4-4 (Figure 4-4, which is a schematic diagram of the verifier performing fingerprint verification on the fingerprint identification terminal), when the verifier puts a finger on the fingerprint identification area of the fingerprint identification terminal, the fingerprint identification terminal detects the PPG signal. If the detected PPG waveform is shown by its dotted line, its DC component matches the input fingerprint stored by the user in Figure 4-1, and the AC component is detected, the finger can be considered as a living body, but its AC component is obvious. If it does not match the AC component of the user, it still does not pass the verification.

As shown in Figure 4-5 (Figure 4-5, another schematic diagram of the verifier performing fingerprint verification on the fingerprint identification terminal), when the verifier puts a finger on the fingerprint identification area of the fingerprint identification terminal, the fingerprint identification terminal detects The PPG signal, if the detected PPG waveform is shown by its dotted line, its DC component matches the input fingerprint stored by the user in Figure 4-1, and the AC component is detected, the finger can be considered as a living body, and its AC The component matches the AC component of the user. If the fingerprint is also matched, it can be verified, so that the verifier and the user are considered to be the same person.

In the embodiment of the present application, the specific functions of the fingerprint identification terminal may include two functions of inputting a fingerprint and verifying a fingerprint. Yes, the following descriptions are made separately. As shown in Figure 5-1 (Figure 5-1, the fingerprint identification terminal enters the fingerprint process flow diagram), when the fingerprint identification terminal enters the fingerprint, it can obtain the user's fingerprint information and the PPG waveform diagram of the pulse information, wherein the PPG waveform diagram The DC component and the AC component are included, and the characteristics of the DC component and the characteristics of the AC component are extracted from the DC component and the AC component, respectively, and stored. In addition, users can enter identity information such as job number, gender, and name. It should be noted that the process of inputting the identity information may be performed before the fingerprint is entered, or after the fingerprint is entered, or during the process of entering the fingerprint, and there is no timing relationship.

When the fingerprint is verified, as shown in Figure 5-2 (Figure 5-2, the flow chart of the fingerprint identification terminal verifying the fingerprint), the verifier can put the finger in the fingerprint identification area, and the fingerprint identification terminal can obtain the fingerprint information of the user. And a PPG waveform diagram of the pulse information, wherein the PPG waveform diagram includes a DC component and an AC component, and extracts features of the DC component and characteristics of the AC component according to the DC component and the AC component, respectively, and compares stored DC components of the user and the verifier The characteristics of the feature and the AC component, if the result of the comparison is matched and the fingerprints match, the verification may be performed, and if it is not matched, the verification is not passed.

In the embodiment of the present application, the feature of the DC component and the feature of the AC component, and the feature of the verification fingerprint and the DC component of the fingerprint and the feature of the AC component may be extracted in the following manner.

Specifically, when the finger and the fingerprint identification area are in contact, the fingerprint recognition terminal detects the PPG signal, and then the LED can be illuminated to obtain the current PPG signal value PPG through the PD, and then the LED is extinguished, and then the current PPG signal value is obtained. PPG", then subtract the PPG from PPG' to get the true value of the current PPG signal PPG. In some possible embodiments, since there may be other light sources even if there is no light from the LEDs, it is necessary to obtain two values by illuminating the LEDs and extinguishing the LEDs, respectively, and calculating the absolute value of the difference between the two. In order to get better verification results, two or more light sources with different spectra can be used. When detecting a finger, two different waveforms can be obtained, as shown in Figure 5-3 (Figure 5-3, for use). Two different PPG waveform diagrams illuminated by two different spectral sources illuminate two different DC and AC components, respectively. In the following, two light sources of different spectra are taken as an example. The light sources of two different spectra are led1 and led2 respectively. When the fingerprint recognition terminal works, as shown in Figure 5-4 (Figure 5-4, two) The flow diagrams of different spectrums of light sources are sequentially turned on and off to collect PPG signals. The LEDs can be sequentially lit, the led1 is turned off, the led2 is turned off, the led2 is turned off, and the LEDs are extinguished n times, and PPG1i and PPG2i are obtained (i=1, 2). , ..., n), the characteristics of the DC component and the characteristics of the AC component can be separately extracted, and when the fingerprint is verified, the characteristics of the DC component and the characteristics of the AC component under the led1 light source and the led2 light source are respectively compared, if at the same time The characteristics of the DC component of the led1 light source and the led2 light source and the characteristics of the AC component are matched, and the fingerprint matching can be verified, which greatly enhances the security. It should be noted that the light sources of different spectra may be green and blue, or red and yellow, or blue and yellow, respectively, which are not limited herein.

Since the PPG signal fluctuates with time, the data of the PPG signal collected at one time does not reflect the real situation. Therefore, the value of the PPG signal can be collected multiple times, such as collecting n times to obtain PPGi, (i=1, 2, ... , n). Here, the mean value of the PPG is taken as the value of the DC component DC.led, and the calculation method is to accumulate PPGi, (i=1, 2, . . . , n), and divide by n. Since the DC component is an interval, a preset value x can be preset, and the interval of the DC component can be expressed as an interval [DC.led-x, DC.led+x], if the mean value of the DC component of the verification fingerprint is In the interval [DC.led-x, DC.led+x], it can be considered that the DC components of the two are matched. In the embodiment of the present application, since the AC component is fluctuating, the variance (or standard deviation) can be used to determine whether the match is matched. Specifically, after acquiring PPGi, (i=1, 2, . . . , n), the calculation is performed. The variance thereof obtains the AC component value AC.led. If the AC component is the AC component of the fingerprint input, the AC.led is stored, and a value y (y>0) is preset, so that when the verifier is verified The variance of the AC component of the fingerprint with the AC.led If the absolute value of the difference is less than y, then the AC fingerprint of the verification fingerprint and the fingerprint input can be considered to be matched.

If two or more spectral sources are used, there is a problem of how to arrange between the two light sources and the light sensor. In order to achieve a certain signal-to-noise ratio of the PPG signal, there is usually a certain relationship between the light source and the light sensor. The distance is the best. At the same time, the layout of the light source and the light sensor cannot damage the integrity of the fingerprint sensing area, otherwise the fingerprint recognition will be affected. Hereinafter, two light sources led1 and led2 and one photosensor PD will be described as an example.

In some possible embodiments, it is assumed that the optimal distance L1 between led1 and PD, the optimal distance L2 between led2 and PD, the width of the fingerprint recognition area is W, and L1>L2. In some possible embodiments, when there is only one PD and W>L1, the led1 and led2 and the PD are arranged along the long edge of the fingerprint sensing area, as shown in Figure 5-5 (Fig. 5-5, LED1) , led2 and PD layout diagram), wherein (a) mode is only suitable for the gap between led1 and PD can be placed in the scene of led2, if the distance between led1 and PD can not accommodate led2, you can use (b) to arrange led With PD. When W<L1, the PD is in the middle of the long side of the fingerprint sensing area, the led1 is disposed on the opposite side, and the led2 can be disposed on the same side or opposite side of the PD, as shown in Figure 5-6 (Figure 5-6, Another layout diagram of led1, led2 and PD).

When two photo sensors PD are used, they are PD1 and PD2, respectively, wherein the light sources led1, led2, and PD1, PD2 are as close as possible to the edge of the fingerprint sensing area, and as close as possible to the central axis. As shown in Figure 5-7 (Figure 5-7, the layout of led1, led2 and PD1, PD2), L1 < W only suitable for (d), (e) is suitable for W < L2. In addition, as shown in Figure 5-8 (Figure 5-8, another layout of led1, led2 and PD1, PD2), the two sensors also exist (f) way, that is, PD1 and PD2 are connected in parallel . At this time, the identification control device pairs LED1, led2, and only one photo sensor PD are similar, and the PPG signal is obtained by the accumulation of signals obtained by PD1 and PD2.

The following is an example of entering the fingerprint and verifying the fingerprint when the company A is entering the company, as shown in Figure 6-1 (Figure 6-1, the flow chart of the access control machine).

S1, enter the fingerprint.

When Xiao Chen went to work on the first day, he needed to enter his identity information and fingerprint information, then enter his fingerprint and other information on the company's access control machine. Other information includes identity information such as name, gender, height, workstation, job number, position, year of graduation, etc., which are not limited here, and may include iris information. Then Xiao Chen can put his finger in the fingerprint sensing area of the access control machine, and then start reading Xiao Chen's fingerprint, as shown in Figure 6-2 (Figure 6-2, the user's finger placed on the fingerprint identification area of the access control machine) .

S2, light the led1, collect the PPG signal PPG1.i, turn off the led1, and collect the PPG signal PPG1.i'.

When the access control machine senses that there is an object in the fingerprint sensing area, it can start working. First, LED1 can be illuminated, as shown in Figure 6-3 (Figure 6-3, which is a schematic diagram of LED1 for the fingerprint identification terminal), used to collect the PPG signal PPG1.1', then extinguished to get the PPG signal PPG1.1", and then Calculate PPG1.1'-PPG1.1" = PPG1. Led1 can be lit and extinguished n times, respectively, get the value of n times PPG signal, get PPG1.i' and PPG1.i", (i = 1, 2, ..., n), then you can calculate PPG1.i' Subtract PPG1.i" to get the value of PPG signal PPG1.i.

S3, illuminate the LED 2, collect the PPG signal PPG2-i, turn off the LED 2, and collect the PPG signal PPG2-i'.

Similarly, LED2 can be illuminated, as shown in Figure 6-4 (Figure 6-4, which is a schematic diagram of LED2 for fingerprint identification terminal), used to collect PPG signal PPG2.1', and then extinguished to get PPG signal PPG2.1", Then calculate PPG2.1'-PPG2.1" = PPG2. Led2 can be lit and extinguished n times, respectively, to get the value of n times PPG signal, get PPG2.i' and PPG2.i", (i = 1, 2, ..., n), then you can calculate PPG2.i' Subtract PPG2.i" to get the value of PPG signal PPG2.i.

It should be noted that the lighting led1, the extinguishing led1, the lighting led2, and the extinguishing of the LED2 may be sequentially performed, or the LED1 may be lit n times, the LED1 may be turned off, and the LED2 and the LED2 may be turned off n times, which is not limited herein.

S4, calculate the mean.

In the embodiment of the present application, the average value of PPG1.i (i=1, 2, . . . , n) can be calculated to obtain DC.led1, and the mean value of PPG2.i (i=1, 2, . . . , n) is calculated. , the value of DC.led2 is obtained, and the DC.led1 and DC.led2 are stored as features of the DC component.

S5, calculate the variance.

In the embodiment of the present application, the variance of PPG1.i (i=1, 2, . . . , n) can be calculated to obtain AC.led1, and the variance of PPG2.i (i=1, 2, . . . , n) is calculated. The value of AC.led2 is obtained, and the AC.led1 and AC.led2 are stored as features of the AC component.

When the fingerprint is entered, the characteristics of the DC component of the fingerprint and the characteristics of the AC component are stored, and the identity information input by the Chen is received, and the identity information is associated with the characteristics of the fingerprint, the DC component, and the AC component, as Xiao Chen’s basis for identity verification.

S6, verify the fingerprint.

In the embodiment of the present application, when a user needs to verify the fingerprint, the finger may be placed in the fingerprint verification portion, and the access control device acquires the feature of the DC component and the feature of the AC component of the PPG signal of the verifier's fingerprint. If the average of the DC components of the verifier's led1 and led2 is p1 and p2, the DC component of Xiaochen is characterized by q1 and q2, assuming the preset values x1 and x2 (q1, q2>x1, x2>0), if P1 is in the interval [q1-x1, q1+x1], and p2 is in the interval [q2-x2, q2+x2], then the DC component of the verifier matches the DC component of the Chen.

Similarly, if the variance of the AC component of the verifier's led1 and led2 is p1 and p2, the AC component of Xiaochen is characterized by q1 and q2, assuming preset values y1 and y2 (q1, q2>y1, y2>0 ), if p1 is in the interval [q1-y1, q1+y1] and p2 is in the interval [q2-y2, q2+y2], the AC component of the verifier matches the AC component of the Chen.

S7, verification pass/fail.

In the embodiment of the present application, when the DC component and the AC component are matched, and the fingerprint information is also matched, the verification may be passed.

The above description is by way of a method, which is described below by means of a functional device. Referring to FIG. 2-3, it is a schematic diagram of a verification device, and the verification device includes:

The second aspect of the embodiment of the present application provides a verification device 300. The verification device 300 includes an acquisition module 301, a processing module 302, a matching module 303, and a determination module 304. The acquisition module 301 is configured to acquire the first input by the verifier. The pulse information is used by the processing module 302 to obtain a first value representing the AC component from the first pulse information, and the matching module 303 is configured to match the first value with the pre-stored second value, where the second value is pre-stored. The value of the AC component is represented in the second pulse information of the user, and the determining module 304 is further configured to: if the matching is unsuccessful, the verification fails.

Specifically, the acquiring module 301 may obtain the value of the PPG signal of the verifier by N times at different time points, and obtain a value of N PPG signals, where N is a positive integer greater than 2; Calculating a first variance of the values of the N PPG signals, using the first variance as the first value. The matching module 303 can compare the difference between the first variance and the second variance, where the variance is the variance of the values of the pre-stored M PPG signals of the user as the second value, where the M is greater than 2. A positive integer; if the difference is not within the preset range, and the first value does not match the second value, the verification fails. If the matching is successful, the determining module passes the verification if the difference is within a preset range, if If the match is unsuccessful, the determination module fails the verification.

In some feasible embodiments, the processing module 302 may further obtain a third value representing the DC component from the first pulse information, and then the matching module 303 matches the third value with the pre-stored fourth value, where The fourth value is a value representing the DC component in the second pulse information of the pre-stored user. If the matching is unsuccessful, the determining module 304 fails the verification.

In some feasible embodiments, the obtaining module 301 may acquire the value of the PPG signal of the verifier at P times at different time points to obtain a value of P PPG signals, where P is a positive integer greater than 2; The module 302 is further configured to calculate a first average value of the P PPG signals as the third value, and then the matching module 303 compares the difference between the first mean value and the second mean value, the second mean value The average value of the values of the M PPG signals of the pre-stored user is used as the fourth value, and the M is a positive integer greater than 2. If the difference is not within the preset range, the third value does not match the fourth value. If successful, the determination module 304 fails the verification.

In some possible embodiments, the obtaining module 301 may be a photoelectric sensor, configured to acquire the pulse information of the verifier, and obtain the first pulse information, where the first pulse information includes L pulse information, where the L is greater than or equal to A positive integer of 2.

Specifically, the photoelectric sensor may include L light sources and T light sensors of different spectra, wherein L light sources of different spectra emit detection light, and T light sensors receive light reflected or transmitted by the detection light. The signal obtains the first pulse information, and the T is a positive integer less than or equal to L.

In some feasible embodiments, the acquiring module 301 may further acquire the first fingerprint information input by the verifier, and the matching module 303 matches the first fingerprint information with the pre-stored second fingerprint information, where the second fingerprint information is matched. The fingerprint information of the pre-stored user is such that if the matching is unsuccessful, the determining module 304 may fail the verification.

The embodiment of the present application further provides a verification device, including a touch screen, one or more processors, a memory, and one or more applications, wherein the touch screen includes a touch-sensitive surface and a display, wherein the one or more programs are Stored in the memory, the one or more programs include instructions that, when executed by the electronic device, cause the electronic device to perform the following steps:

Obtaining first pulse information input by the verifier, and then obtaining a first value representing the AC component from the first pulse information, and then matching the first value with the pre-stored second value, the second value being pre-stored If the value of the AC component is represented in the second pulse information of the user, if the matching is unsuccessful, the verification fails.

Specifically, the value of the PPG signal of the verifier can be obtained N times at different time points, and the value of the N PPG signals is obtained, where N is a positive integer greater than 2, and then the representation communication is obtained from the first pulse information. The first value of the AC component is specifically, and then calculating a first variance of the values of the N PPG signals, using the first variance as the first value, and then comparing the first variance and the second variance a difference, the second variance is a variance of a value of the pre-stored user's M PPG signals, the M being a positive integer greater than 2, and if the difference is not within a preset range, the first value is If the second value is unsuccessful, the verification fails. If the difference is within the preset range, the first value and the second value are successfully matched, and the verification is passed.

In some possible embodiments, a third value representing the DC component of the DC may be obtained from the first pulse information, the third value being matched with a pre-stored fourth value, the fourth value being the second of the pre-stored user The value of the DC component is represented in the pulse information, and if the matching is unsuccessful, the verification fails.

In some feasible embodiments, the specific manner of obtaining the third value may be that the value of the PPG signal of the verifier is obtained P times at different time points, and the value of the P PPG signals is obtained, where the P is greater than 2. A positive integer, a first mean value of the values of the P PPG signals is calculated, and the first mean value is used as the third value.

In some feasible embodiments, the specific matching method may be to compare the difference between the first mean value and the second mean value, where the second mean value is the average value of the pre-stored M PPG signals of the user as the fourth Value, the M is a positive integer greater than 2, and if the difference is not within the preset range, and the third value does not match the fourth value, the verification fails. Since the verification by the comparison of the DC component and the AC component increases the difficulty of counterfeiting and enhances the security of verification.

In some feasible embodiments, the specific method for acquiring pulse information may be: acquiring the pulse information of the verifier by using a photoelectric sensor to obtain the first pulse information, where the first pulse information includes L pulse information, and the L is greater than A positive integer equal to 2.

Specifically, the L light sources in the photoelectric sensor are used to emit the detection light, and the T light sensors are used to receive the light signal reflected or transmitted by the detection light to obtain the first pulse information, where the T is equal to or less than L. Integer.

Specifically, the L may be equal to 2, wherein the first photo sensor is configured to receive the reflected or transmitted optical signal after the first light source is irradiated, and the second photo sensor is configured to receive the reflected or transmitted light after the second light source is irradiated. Optical signal.

In some feasible embodiments, the first fingerprint information input by the verifier is obtained, and the first fingerprint information is matched with the pre-stored second fingerprint information, where the second fingerprint information is pre-stored fingerprint information of the user. If the match is not successful, the verification does not pass.

Since the verification by the comparison of the DC component and/or the AC component and/or the fingerprint increases the difficulty of counterfeiting and enhances the security of the verification.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Claims

A verification method, comprising:

Obtaining first pulse information input by the verifier;

Obtaining a first value representing the AC AC component from the first pulse information;

Matching the first value with a pre-stored second value, the second value being a value representing the AC component in the pre-stored second pulse information;

If the match is not successful, the verification fails.
The method according to claim 1, wherein the acquiring the first pulse information input by the verifier is specifically:

Obtaining values of the verifier's PPG signal N times at different time points respectively, obtaining values of N PPG signals as the first pulse information, and the N is a positive integer greater than 2;

The obtaining, by the first pulse information, the first value that represents the AC AC component is specifically:

Calculating a first variance of values of the N PPG signals, using the first variance as the first value.
The method of claim 2, wherein the matching the first value with the pre-stored second value comprises:

Comparing the difference between the first variance and the second variance, wherein the second variance is a variance of a value of the pre-stored M PPG signals of the user as the second value, and the M is a positive value greater than 2. Integer

If the matching is unsuccessful, the verification fails, including:

If the difference is not within the preset range, and the first value is not successfully matched with the second value, the verification fails.
The method of any of claims 1-3, wherein the method further comprises:

If the match is successful, the verification passes.
The method of claim 4, wherein the method further comprises:

Comparing the difference between the first variance and the second variance, wherein the second variance is a variance of a value of the pre-stored M PPG signals of the user as the second value, and the M is a positive value greater than 2. An integer; if the difference is within a preset range, the first value and the second value are successfully matched, then the verification is passed.
A method according to any one of claims 1 to 5, wherein the method further comprises:

Obtaining a third value representing the DC component from the first pulse information;

Matching the third value with a pre-stored fourth value, the fourth value being a value representing a DC component in the second pulse information of the pre-stored user;

If the match is unsuccessful, the verification fails.
The method according to claim 6, wherein the acquiring the first pulse information input by the verifier is specifically:

Obtaining the value of the verifier's PPG signal P times at different time points respectively, and obtaining values of P PPG signals, the P being a positive integer greater than 2;

The obtaining, by the first pulse information, the third value representing the DC component of the DC comprises:

Calculating a first mean value of values of the P PPG signals, and using the first mean value as the third value.
The method of claim 7 wherein said matching said third value with a pre-stored fourth value include:

Comparing the difference between the first mean value and the second mean value, the second mean value is the fourth value of the value of the pre-stored M PPG signals of the user, and the M is a positive integer greater than 2. ;

If the matching is unsuccessful, the verification fails, including:

If the difference is not within the preset range, and the third value is not successfully matched with the fourth value, the verification fails.
The method according to any one of claims 1-8, wherein the obtaining the first pulse information input by the verifier comprises:

Acquiring the pulse information of the verifier using a photosensor to obtain the first pulse information, the first pulse information includes L pulse information, and the L is a positive integer greater than or equal to 2.
The method according to claim 9, wherein the obtaining the pulse information of the verifier using the photosensor comprises:

The L light sources emit detection light;

Receiving, by using T photosensors, the optical signal reflected or transmitted by the detecting light to obtain the first pulse information, where T is a positive integer equal to or smaller than L.
Method according to claim 9 or 10, characterized in that said L is equal to two.
The method according to claim 11, wherein said T is equal to 2, wherein the first photo sensor is configured to receive an optical signal reflected or transmitted after the first light source is illuminated, and the second photo sensor is configured to receive the second The light signal reflected or transmitted after the light source is illuminated.
The method according to any one of claims 1 to 12, wherein the method further comprises:

Obtaining first fingerprint information input by the verifier;

Matching the first fingerprint information with the pre-stored second fingerprint information, where the second fingerprint information is pre-stored fingerprint information of the user;

If the match is unsuccessful, the verification fails.
A verification device, characterized in that the verification device comprises various functional modules for performing the method according to any one of claims 1 to 13.
A verification device comprising a touch screen, a fingerprint recognition device, a memory, one or more processors, and one or more programs; wherein the one or more programs are stored in the memory; wherein The one or more processors, when executing the one or more programs, cause the verification device to perform the method of any one of claims 1 to 13.
A computer program product, characterized in that, when the computer program product is run on a verification device, the verification device is caused to perform the method of any one of claims 1-13.
A computer readable storage medium comprising instructions, wherein when the instructions are run on a verification device, the verification device is caused to perform the method of any of claims 1-13.