CN115035644A - Multi-mode identification access control system based on raspberry group and RFID - Google Patents
Multi-mode identification access control system based on raspberry group and RFID Download PDFInfo
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- CN115035644A CN115035644A CN202210567414.7A CN202210567414A CN115035644A CN 115035644 A CN115035644 A CN 115035644A CN 202210567414 A CN202210567414 A CN 202210567414A CN 115035644 A CN115035644 A CN 115035644A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/22—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder
- G07C9/25—Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
- G07C9/27—Individual registration on entry or exit involving the use of a pass with central registration
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Abstract
The invention discloses a multi-mode identification access control system based on a raspberry group and RFID, which comprises a fingerprint identification module, a face acquisition module, an access control card swiping module, an information processing module, a communication module, an LCD display screen and a terminal, wherein the face acquisition module is connected with the face acquisition module; the fingerprint identification module collects fingerprint information and provides an identification result to the information processing module; the face acquisition module acquires face image information by using a raspberry Pi 3B + control CSI camera, frames out face parts in the image by adopting a YOLOV5 target detection algorithm, extracts face features by using facenet, compares the features and provides an identification result to the information processing module; the entrance guard card swiping module performs read-write operation on the UID of the entrance guard card and performs input and identification operation on entrance guard card swiping information. The identity of the identified person is identified by collecting information of three modes, and the lightweight embedded face identification method is realized by combining YOLOV5 and facenet, so that the identification precision is greatly improved.
Description
Technical Field
The invention relates to a machine vision and safety technology, in particular to a multi-mode identification access control system based on a raspberry group and RFID.
Background
In the information age, the identification technology related to information security can ensure the information security of people and the enterprise benefit, and the information security is particularly widely applied to entrance guard. At present, a common entrance guard adopts a single information identification method, such as fingerprint identification, face identification, password identification and the like. The identification mode in a single mode cannot accurately identify the identity of the identified person, so that the information security cannot be protected. Therefore, a multi-modal entrance guard identification method with both accuracy and safety is needed.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a multi-mode identification access control system based on raspberry groups and RFID, which can collect information of different modes of an identified person at the same time to identify the identity of the identified person, so that the accuracy and the safety of access control identification are improved.
The technical scheme is as follows: the invention relates to a multi-mode identification access control system based on a raspberry pi and an RFID, which comprises a fingerprint identification module, a face acquisition module, an access control card swiping module, an information processing module, a communication module, an LCD display screen and a terminal.
The fingerprint identification module uses an AS608 optical fingerprint sensor to collect fingerprint information, and provides an identification result for the information processing module through the communication module after the collected fingerprint information is identified and processed.
The face acquisition module acquires face image information by using a raspberry pi 3B + control CSI camera, frames out a face part in an image by adopting a YOLOV5 target detection algorithm for the acquired face image information, then performs feature extraction on face features by using facenet, compares the obtained face features with the face features in a face database, and finally provides an identification result for the information processing module.
The entrance guard card swiping module uses the RC522 RFID module to connect the raspberry group 3B + through the SPI interface, can read and write the UID of the entrance guard card, and can input and identify the entrance guard card swiping information.
The information processing module uses raspberry pi 3B +, can perform face recognition operation on the face image obtained in the face acquisition module, and analyzes related data acquired by the fingerprint recognition module, the face acquisition module and the entrance guard card swiping module.
The communication module is used for serial port communication between the raspberry pi 3B + and the AS608 fingerprint identification module and the RC522 RFID module, and is used for data communication between the raspberry pi 3B + and a terminal through an mqtt protocol;
the LCD display screen displays the character of 'passing' identification by displaying the identification result after the feedback program receives the identification success information sent by the entrance guard control program, and displays the character of 'failing' identification by the LCD display screen after the feedback program receives the identification error information sent by the entrance guard control program;
the terminal is used for feeding back that the value of an accumulator B in a program reaches 3, and under the condition that the raspberry pi 3B + sends information of identification failure to the terminal, a user can use the terminal to send an unlocking instruction to the raspberry pi 3B + through an mqtt network protocol to control the opening of the electromagnetic valve.
OpenCV + TF-Lite environment is deployed on the raspberry pi 3B +, face recognition operation can be performed by combining a YOLOV5 model with facenet, and the entrance guard related program deployed on the raspberry pi 3B + includes:
(1) fingerprint identification program:
the fingerprint identification program comprises a fingerprint information input program and a fingerprint information comparison program; the raspberry pi 3B + calls a fingerprint information input program to send an instruction to the AS608 fingerprint identification module through a serial port so that the fingerprint information can be input, and a fingerprint information database is generated; after the AS608 fingerprint module collects the fingerprint of the identified person, the collected fingerprint information is sent to the raspberry group 3B + through a serial port, the raspberry group 3B + calls a fingerprint information comparison program after receiving the fingerprint information, the currently received fingerprint information is compared with the fingerprint information in the fingerprint information database, and finally the comparison score exceeds a set maximum threshold value a, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
(2) RC522 RFID module read-write program:
for an initial IC card without identity information, the raspberry pi 3B + is communicated with the RC522 RFID module through an SPI interface, and the IC card is overwritten, so that the IC card obtains specified UID information; when the IC card is used for swiping the card of the RC522 RFID module, the RC522 RFID module reads UID information of the IC card, the UID information is sent to the raspberry group 3B + through the SPI interface, the comparison is carried out between the raspberry group 3B + and the UID information database, if the comparison is successful, the value of an accumulator A of the access control system is +1, and otherwise, the value of the accumulator A of the access control system is-1.
(3) A face recognition program:
the face recognition program comprises a face information input program, a face image acquisition program and a face information comparison program; a human face information database preparation stage, wherein human face photos of different people are put into folders with corresponding names, a human face information input program is called, firstly, pictures in each folder are accessed, then, human face features in the pictures are extracted and stored through facenet, the stored human face feature data are trained through an SVM, and finally, a human face information database is output; in the process of the fingerprint identification program, after receiving fingerprint information through a serial port, the raspberry pi 3B + simultaneously calls a face image acquisition program to control a CSI camera to take a picture of a face image of an identified person and store the picture; after a face image of a recognized person is obtained, the raspberry is dispatched with 3B + and a face information comparison program is called, the face in the image is framed through YOLOV5, the framed face image is subjected to feature extraction on face features through facenet, the obtained face features are compared with the face features in a face information database, if the similarity reaches a maximum threshold B, the value of an access control system accumulator A is +1, otherwise, the value of the access control system accumulator A is-1.
(4) And (3) access control program:
the entrance guard control system checks the change of the fingerprint identification program, the RC522 RFID module read-write program and the face identification program to the value of the accumulator A, when the value of the accumulator A is more than or equal to 2, the raspberry group 3B + inputs a low level to a pin connected with a relay for controlling the electromagnetic valve switch, the relay switch jumps, the electromagnetic valve is opened and sends identification success information to the feedback program, and if the value of the accumulator A is less than 2, identification error information is sent to the feedback program.
(5) A feedback program:
and after receiving the identification success information sent by the access control program, the feedback program displays the identification result through an LCD display screen to identify the word, and after receiving the identification error information sent by the access control program, the feedback program displays the identification failure through the LCD display screen to re-identify the word and carries out +1 operation on the accumulator B.
(6) And (4) alarm program:
when the value of an accumulator B in the feedback program reaches 3, the raspberry pi 3B + sends information of identification failure to the terminal, the user needs to send an unlocking instruction to the raspberry pi through the terminal to control the electromagnetic valve to be opened, and the terminal and the raspberry pi 3B + carry out remote communication through an mqtt network protocol.
The system comprises the following steps when in operation:
and after the fingerprint information is detected by the S1 and AS608 fingerprint modules and the reading and writing program of the RC522 RFID module obtains the card swiping information, the raspberry Pi 3B + calls the CSI camera to shoot, collect and store the face image of the identified person.
S2, raspberry Pi 3B + calls a fingerprint identification program, an RFID read-write program and a face identification program to respectively compare the fingerprint information, UID information and face information of the identified person with the corresponding databases, if the identification is successful, the value of the accumulator A is +1, otherwise, the value of the accumulator A is-1.
The fingerprint identification procedure in step S2 is specifically:
A. the AS608 fingerprint module sends the acquired fingerprint information to a raspberry group 3B + through a serial port;
B. after receiving the fingerprint information, the raspberry pi 3B + calls a fingerprint information comparison program to compare the currently received fingerprint information with the fingerprint information in the fingerprint information database;
C. and if the comparison score exceeds the set maximum threshold value a, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
The RC522 RFID module reading and writing program in step S2 specifically is:
A. the RC522 RFID module reads UID information of the IC card and sends the UID information to a raspberry pi 3B + through an SPI interface;
B. comparing the read UID information of the IC card with a UID information database in a raspberry pi 3B +;
C. if the comparison is successful, the value of the accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
The face recognition procedure in step S2 is specifically:
A. the raspberry pi 3B + receives fingerprint information through a serial port and simultaneously controls a CSI camera to shoot and store face images of identified people;
B. the raspberry pi 3B + frames the face in the image through YOLOV 5;
C. extracting the characteristics of the framed face image to face characteristics through facenet;
D. comparing the obtained face features with the face features in the face information database;
E. and if the similarity of the comparison results reaches the maximum threshold value b, the value of the accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
And S3, when the value of the accumulator A is more than or equal to 2, inputting a low level to a pin connected with a relay for controlling the electromagnetic valve switch by the raspberry Pi 3B +, jumping the relay switch, opening the electromagnetic valve and sending identification success information to the feedback program, and if the value of the accumulator A is less than 2, sending identification error information to the feedback program.
S4, when the feedback program receives the identification success information, the raspberry Pi 3B + controls the LCD display screen to output the character of 'identification passing' without executing the step S5; and after the feedback program receives the identification error information, displaying 'identification failure, please re-identify' characters through an LCD display screen, and carrying out +1 operation on the accumulator B.
S5, when the value of the accumulator B reaches 3, the raspberry pi 3B + sends information of identification failure to the terminal, the user needs to issue an unlocking instruction to the raspberry pi through the terminal to control the electromagnetic valve to open, and the terminal and the raspberry pi 3B + carry out remote communication through an mqtt network protocol.
A computer storage medium, on which a computer program is stored, which when executed by a processor implements a raspberry pi and RFID based multi-modal identification access control system as described above.
A computer device comprises a storage, a processor and a computer program which is stored on the storage and can run on the processor, wherein when the processor executes the computer program, the multi-modal identification access control system based on raspberry pi and RFID is realized.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the invention identifies the identity of the identified person by collecting the information of the three modes, and overcomes the defects of inaccurate identification of the single mode and possible error identification.
2. According to the invention, a face recognition algorithm is realized by combining YOLOV5 and facenet, and is applied to embedded equipment, so that a light-weight embedded face recognition method is realized, and the recognition precision is higher compared with that of the traditional machine vision application.
Drawings
FIG. 1 is a schematic diagram of the apparatus according to the embodiment of the present invention.
Fig. 2 is a general flow chart of the multi-modal identification access control system based on RFID according to the present invention.
FIG. 3 is a flowchart of a fingerprint identification procedure according to an embodiment of the present invention.
FIG. 4 is a flowchart of an RC522 RFID module read/write procedure according to an embodiment of the present invention.
Fig. 5 is a flowchart of a face recognition procedure according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in figure 1, a multi-modal identification access control system based on raspberry group and RFID, including fingerprint identification module, people's face collection module, entrance guard card swiping module, information processing module, communication module, LCD display screen, terminal, specifically connect as follows:
the AS608 fingerprint identification module is connected with the raspberry pi 3B + through a serial port to perform data communication, the RC522 RFID module is connected with the LCD through an SPI (serial peripheral interface) to perform data communication with the raspberry pi 3B +, the CSI camera is connected to a CSI interface in the raspberry pi 3B +, in the embodiment of the invention, the relay is connected with a GPIO4 pin of the raspberry pi 3B +, the electromagnetic valve is connected with the relay, and the raspberry pi 3B + performs network communication with a mobile terminal mqtt protocol.
As shown in fig. 2, the operation of the multi-modal identification access control system based on the raspberry pi and the RFID comprises the following steps:
and after the fingerprint information is detected by the fingerprint module of S1 and AS608 and the card swiping information is obtained by the reading and writing program of the RC522 RFID module, the raspberry Pi 3B + calls the CSI camera to shoot, collect and store the face image of the identified person.
S2, raspberry group 3B + calls a fingerprint identification program, an RC522 RFID module reading and writing program and a face identification program respectively compare the fingerprint information, UID information and face information of the identified person with the corresponding databases, if the identification is successful, the value of the accumulator A is +1, otherwise, the value of the accumulator A is-1.
And S3, when the value of the accumulator A is more than or equal to 2, inputting a low level to a pin connected with a relay for controlling the electromagnetic valve switch by the raspberry Pi 3B +, jumping the relay switch, opening the electromagnetic valve and sending identification success information to the feedback program, and if the value of the accumulator A is less than 2, sending identification error information to the feedback program.
And S4, when the feedback program receives the identification success information, the raspberry Pi 3B + controls the LCD display screen to output the character of 'identification passing' without executing the step S5. And after the feedback program receives the identification error information, displaying 'identification failure, please re-identify' characters through an LCD display screen, and carrying out +1 operation on the accumulator B.
And S5, when the value of the accumulator B reaches 3, the raspberry pi 3B + sends information of identification failure to the terminal, the user needs to issue an unlocking instruction to the raspberry pi through the terminal to control the electromagnetic valve to be opened, and the terminal and the raspberry pi 3B + carry out remote communication through an mqtt network protocol.
As shown in fig. 3, the fingerprint identification procedure in step S2 specifically includes:
A. the AS608 fingerprint module sends the acquired fingerprint information to a raspberry group 3B + through a serial port;
B. after receiving the fingerprint information, the raspberry pi 3B + calls a fingerprint information comparison program to compare the currently received fingerprint information with the fingerprint information in the fingerprint information database;
C. and if the comparison score exceeds the set maximum threshold value a, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
As shown in fig. 4, the RC522 RFID module reading and writing program in step S2 specifically includes:
A. the RC522 RFID module reads UID information of the IC card and sends the UID information to a raspberry pi 3B + through an SPI interface;
B. comparing the read UID information of the IC card with a UID information database in a raspberry pi 3B +;
C. and if the comparison is successful, the value of the accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
As shown in fig. 5, the face recognition procedure in step S2 specifically includes:
A. after receiving fingerprint information through a serial port, the raspberry pi 3B + controls a CSI camera to shoot and store a face image of the identified person;
B. the raspberry pi 3B + frames the face in the image through YOLOV 5;
C. extracting the characteristics of the framed face image to face characteristics through facenet;
D. comparing the obtained face features with the face features in the face information database;
E. and if the similarity of the comparison result reaches the maximum threshold value b, judging that the value of the accumulator A of the access control system is +1, and otherwise, judging that the value of the accumulator A of the access control system is-1.
Claims (8)
1. A multi-mode identification access control system based on a raspberry group and RFID is characterized by comprising a fingerprint identification module, a face acquisition module, an access control card swiping module, an information processing module, a communication module, an LCD display screen and a terminal;
the fingerprint identification module acquires fingerprint information by using an AS608 optical fingerprint sensor, identifies the acquired fingerprint information and provides an identification result to the information processing module through the communication module;
the face acquisition module acquires face image information by using a raspberry Pi 3B + control CSI camera, frames out a face part in an image by adopting a YOLOV5 target detection algorithm for the acquired face image information, then performs feature extraction on face features by using facenet, compares the obtained face features with the face features in a face database, and finally provides an identification result for the information processing module;
the entrance guard card swiping module is connected with the raspberry pi 3B + through an SPI (serial peripheral interface) interface by using an RC522 RFID (radio frequency identification) module, can perform read-write operation on UIDs (user identification devices) of the entrance guard card, and can perform input and identification operation on entrance guard card swiping information;
the information processing module can perform face recognition operation on the face image obtained in the face acquisition module by using raspberry pi 3B +, and analyze related data acquired by the fingerprint recognition module, the face acquisition module and the entrance guard card swiping module;
the communication module is used for serial port communication between the raspberry pi 3B + and the AS608 fingerprint identification module and the RC522 RFID module, and is used for data communication between the raspberry pi 3B + and a terminal through an mqtt protocol;
the LCD display screen displays the character of 'passing' identification by displaying the identification result after the feedback program receives the identification success information sent by the entrance guard control program, and displays the character of 'failing' identification by the LCD display screen after the feedback program receives the identification error information sent by the entrance guard control program;
the terminal is used for feeding back that the value of an accumulator B in a program reaches 3, and under the condition that the raspberry pi 3B + sends information of identification failure to the terminal, a user can use the terminal to send an unlocking instruction to the raspberry pi 3B + through an mqtt network protocol to control the opening of the electromagnetic valve.
2. The multi-modal identification access control system based on the raspberry pi and the RFID as claimed in claim 1, wherein OpenCV + TF-Lite environment is deployed on the raspberry pi 3B +, which can use YOLOV5 model in combination with facenet to perform face recognition operation, and the access control related program deployed on the raspberry pi 3B + includes:
(1) fingerprint identification program:
the fingerprint identification program comprises a fingerprint information input program and a fingerprint information comparison program; the raspberry pi 3B + calls a fingerprint information input program to send an instruction to the AS608 fingerprint identification module through a serial port so that the fingerprint information can be input, and a fingerprint information database is generated; after the AS608 fingerprint module collects the fingerprint of the identified person, the collected fingerprint information is sent to the raspberry group 3B + through a serial port, the raspberry group 3B + calls a fingerprint information comparison program after receiving the fingerprint information, the currently received fingerprint information is compared with the fingerprint information in a fingerprint information database, and finally the comparison score exceeds a set maximum threshold value a, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1;
(2) RC522 RFID module read-write program:
for an initial IC card without identity information, the raspberry pi 3B + is communicated with the RC522 RFID module through an SPI interface, and the IC card is overwritten, so that the IC card obtains specified UID information; when the IC card is used for swiping the card of the RC522 RFID module, the RC522 RFID module reads UID information of the IC card, the UID information is sent to a raspberry group 3B + through an SPI interface, the comparison is carried out between the raspberry group 3B + and a UID information database, if the comparison is successful, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1;
(3) a face recognition program:
the face recognition program comprises a face information input program, a face image acquisition program and a face information comparison program; a human face information database preparation stage, wherein human face photos of different people are put into folders with corresponding names, a human face information input program is called, firstly, pictures in each folder are accessed, then, human face features in the pictures are extracted and stored through facenet, the stored human face feature data are trained through an SVM, and finally, a human face information database is output; in the process of the fingerprint identification program, after receiving fingerprint information through a serial port, the raspberry pi 3B + simultaneously calls a face image acquisition program to control a CSI camera to take a picture of a face image of an identified person and store the picture; after a face image of a recognized person is obtained, the raspberry type 3B + calls a face information comparison program, a face in the image is framed through YOLOV5, feature extraction is carried out on face features on the framed face image through facenet, the obtained face features are compared with the face features in a face information database, if the similarity reaches a maximum threshold B, the value of an access control system accumulator A is +1, otherwise, the value of the access control system accumulator A is-1;
(4) and (3) access control program:
the entrance guard control system checks the change of the fingerprint identification program, the RC522 RFID module read-write program and the face identification program to the value of the accumulator A, when the value of the accumulator A is more than or equal to 2, the raspberry group 3B + inputs a low level to a pin connected with a relay for controlling the electromagnetic valve switch, the relay switch jumps, the electromagnetic valve is opened and sends identification success information to the feedback program, and if the value of the accumulator A is less than 2, identification error information is sent to the feedback program;
(5) and (3) feedback program:
after the feedback program receives the identification success information sent by the access control program, the LCD display screen displays the identification result of ' identification passing ' character, if the feedback program receives the identification error information sent by the access control program, the LCD display screen displays the ' identification failure ' character, please re-identify the ' character, and carries out +1 operation on the accumulator B;
(6) and (4) alarm program:
when the value of the accumulator B in the feedback program reaches 3, the raspberry pi 3B + sends information of identification failure to the terminal, the user needs to issue an unlocking instruction to control the electromagnetic valve to be opened through the terminal to the raspberry pi, and the terminal and the raspberry pi 3B + are in remote communication through an mqtt network protocol.
3. The multi-modal access control system based on raspberry pi and RFID of claim 1, wherein the system comprises the following steps in operation:
s1, after the fingerprint information is detected by the AS608 fingerprint module and the card swiping information is obtained by the RC522 RFID module reading and writing program, the raspberry group 3B + calls the CSI camera to shoot, collect and store the face image of the identified person;
s2, calling a fingerprint identification program, an RFID read-write program and a face identification program by the raspberry Pi 3B +, respectively comparing the fingerprint information, UID information and face information of the identified person with the corresponding databases, and if the identification is successful, comparing the result every time, determining the value of the accumulator A to be +1, otherwise, determining the value of the accumulator A to be-1;
s3, when the value of the accumulator A is more than or equal to 2, the raspberry pi 3B + inputs low level to the pin connected with the relay for controlling the electromagnetic valve switch, the relay switch jumps, the electromagnetic valve is opened and sends identification success information to the feedback program, if the value of the accumulator A is less than 2, identification error information is sent to the feedback program;
s4, when the feedback program receives the identification success information, the raspberry Pi 3B + controls the LCD display screen to output the character of 'identification passing' without executing the step S5; after the feedback program receives the identification error information, displaying 'identification failure, please re-identify' word by an LCD display screen, and carrying out +1 operation on the accumulator B;
and S5, when the value of the accumulator B reaches 3, the raspberry pi 3B + sends information of identification failure to the terminal, the user needs to issue an unlocking instruction to the raspberry pi through the terminal to control the electromagnetic valve to be opened, and the terminal and the raspberry pi 3B + carry out remote communication through an mqtt network protocol.
4. The multi-modal identification access control system based on the raspberry pi and the RFID as claimed in claim 3, wherein the fingerprint identification procedure in step S2 is specifically as follows:
A. the AS608 fingerprint module sends the acquired fingerprint information to a raspberry group 3B + through a serial port;
B. after receiving the fingerprint information, the raspberry pi 3B + calls a fingerprint information comparison program to compare the currently received fingerprint information with the fingerprint information in the fingerprint information database;
C. and if the comparison score exceeds the set maximum threshold value a, the value of an accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
5. The multi-modal identification access control system based on the raspberry pi and the RFID as claimed in claim 3, wherein the RC522 RFID module read-write program in step S2 specifically comprises:
A. the RC522 RFID module reads UID information of the IC card and sends the UID information to a raspberry pi 3B + through an SPI interface;
B. comparing the read UID information of the IC card with a UID information database in a raspberry pi 3B +;
C. and if the comparison is successful, the value of the accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
6. The multi-modal identification access control system based on the raspberry pi and the RFID as claimed in claim 3, wherein the face recognition program in step S2 is specifically:
A. the raspberry pi 3B + receives fingerprint information through a serial port and simultaneously controls a CSI camera to shoot and store face images of identified people;
B. the raspberry type 3B + frames out the face in the image through YOLOV 5;
C. extracting the characteristics of the framed face image to face characteristics through facenet;
D. comparing the obtained face features with face features in a face information database;
E. and if the similarity of the comparison results reaches the maximum threshold value b, the value of the accumulator A of the access control system is +1, otherwise, the value of the accumulator A of the access control system is-1.
7. A computer storage medium on which a computer program is stored, the computer program, when executed by a processor, implementing a raspberry pi and RFID based multimodal identification access control system as claimed in any one of claims 1 to 6.
8. A computer device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements a raspberry pai and RFID based multimodal identification access control system as claimed in any one of claims 1 to 6.
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