CN210864746U - Attendance system based on face recognition - Google Patents
Attendance system based on face recognition Download PDFInfo
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- CN210864746U CN210864746U CN201921534082.2U CN201921534082U CN210864746U CN 210864746 U CN210864746 U CN 210864746U CN 201921534082 U CN201921534082 U CN 201921534082U CN 210864746 U CN210864746 U CN 210864746U
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Abstract
The utility model discloses an attendance system based on face identification, including host system, information acquisition module, display module and control end. The information acquisition module comprises a camera assembly and a fingerprint identification module, wherein the camera assembly can comprise a camera and a motor driving module for driving the camera to rotate, the motor driving module comprises a stepping motor and an ULN2003APG module, and meanwhile, gears with different sizes can be added in the motor to control the precision. The digital steering engine is introduced into the attendance system to adjust the position of the camera, so that the shooting range of the camera is expanded, and the condition of label leakage is prevented.
Description
Technical Field
The invention relates to the technical field of intelligent recognition, in particular to an attendance system based on face recognition.
Background
The classroom roll call can better urge students to stay on class without late arrival, early exit or absenteeism. The disadvantage of manual roll call is that the number of students is large, and teachers cannot remember each student one by one, so that the problem that individual students cannot drill empty bits and replace others to sign in is avoided.
The face recognition attendance method replaces the mode of roll calling of the teacher, so that the teacher is relaxed, and meanwhile, the attendance of the teacher in a few minutes before class is not required, and the classroom efficiency is improved.
The face recognition technology is a technology for recognizing the identity of a person by analyzing a face image by using a computer, detecting a frequency domain space slide detection image block of the image, judging whether the image is a face region or not, and extracting effective characteristic information. The human face appearance characteristics are greatly influenced by human postures, expressions, illumination and the like, and how to extract the human face characteristics is always the most important subject in the field of human face recognition.
Most cameras in the existing face recognition attendance system are fixed at a certain position, and a check-in person needs to adjust the posture of the check-in person so as to enter the shooting range of the cameras. Sometimes, the posture of the check-in person cannot meet the requirement of the camera, but the check-in person does not find the posture, so that the check-in person is missed.
Disclosure of Invention
The invention aims to provide an attendance system based on face recognition, aiming at the defect of missed label caused by fixed position of a camera in the existing face recognition attendance system. The motor driving module is introduced into the attendance system to adjust the position of the camera, so that the shooting range of the camera is expanded, and the condition of label leakage is prevented.
The technical scheme adopted for realizing the purpose of the invention is as follows:
an attendance system based on face recognition comprises a main control module, an information acquisition module, a display module and a control end;
the information acquisition module includes camera subassembly and fingerprint identification module, the information acquisition module with host system's input electricity is connected, host system electricity be connected with the WIFI module in order to with the control end communication is connected, the display module with host system communication is connected in order to show attendance information, wherein:
the display module comprises a capacitive touch screen electrically connected with the main control module and an SIM module electrically connected with the main control module;
the camera assembly comprises a camera and a motor driving module for driving the camera to rotate, and the motor driving module comprises a stepping motor and an ULN circuit board.
In the above technical solution, the control terminal is a PC terminal.
In the above technical solution, the main control module is an STM32 single chip microcomputer.
In the technical scheme, the WIFI module is an ESP8266WiFi transmitter, wherein an UTXD pin of the ESP8266WiFi transmitter is connected with an RXD pin of the STM32 singlechip, and the URXD pin is connected with a TXD of the STM32 singlechip.
In the technical scheme, the ULN circuit board is ULN2003APG, wherein a pin A, B, C, D is respectively connected with pins PF0, PF1, PF2 and PF3 of an STM32 singlechip.
In the technical scheme, the capacitive touch screen is an ATK-4.3tft lcd module, an NCE pin of the ATK-4.3tft lcd module is connected with a PG12 pin of an STM32 singlechip, an RS pin is connected with a PG0 pin of the STM32 singlechip, a WR pin is connected with a PD5 pin of the STM32 singlechip, an RD pin is connected with a PD4 pin of the STM32 singlechip, D [15:0] is connected with FSMC _ D15-FSMC _ D0 pin of the STM32 singlechip, MOSI (CT _ SDA) is connected with a PF9 pin of the STM32 singlechip, CLK (CT _ SCL) is connected with a PB1 pin of the STM32 singlechip, PEN (CT _ INT) is connected with a PF10 pin of the STM32, and CS (CT _ RST) is connected with a PF2 pin of the STM32 PB singlechip.
In the above technical solution, the SIM module is an ATK-SIM800C module, wherein an STXD pin is connected to a PB11 pin of the STM32 single chip microcomputer, and an SRXD pin is connected to a PB10 pin of the STM32 single chip microcomputer.
In the technical scheme, the intelligent alarm system further comprises a voice module and an alarm module.
In the above technical solution, the alarm module includes a buzzer and a PNP triode.
In the technical scheme, face information and fingerprint information are recorded in advance to form a database and are stored in a control terminal; the information acquisition module transmits the acquired information to the main control module, and the main control module compares and analyzes the received information and the information in the database according to a face recognition algorithm written by the control terminal and sends the analyzed attendance information to the display module to complete the attendance.
Compared with the prior art, the invention has the beneficial effects that:
1. the camera assembly comprises a camera and a motor driving module for driving the camera to rotate, wherein the motor driving module comprises a stepping motor and a ULN2003APG module. When installing the camera at the gate or centre gripping on the computer, attendance person's accessible control end sends the instruction to the singlechip, thereby makes step motor work control camera's rotation, and accurate discernment facial information prevents to appear because the condition of the unable discernment of camera angle not good by the singlechip.
2. The face recognition attendance system provided by the invention has the advantages that the face recognition mode is used as the main mode, the fingerprint recognition mode is used as the auxiliary mode, and the attendance system replaces a teacher roll call mode, so that the teacher is relaxed, and meanwhile, the attendance system does not occupy several minutes before class to roll calls. Face identification and fingerprint identification's dual inspection has avoided also suppressing some bad phenomena of present university student, and better supervision student is accumulated class, and is not late, not early retreat, not spacious class.
3. In the face recognition attendance system, the capacitive touch screen not only displays real-time information, but also can be operated, so that the system can be more conveniently applied.
Drawings
FIG. 1A shows a schematic diagram main circuit of an STM32 single chip microcomputer;
FIG. 1B shows a schematic diagram peripheral circuit of an STM32 single chip microcomputer;
fig. 2 is a circuit diagram of an ESP8266WIFI module;
FIG. 3 is a circuit diagram of the ATK-4.3TFTLCD module of the capacitive touch screen;
FIG. 4 is a circuit diagram of a motor drive interface;
FIG. 5 is a circuit diagram of the ATK-AS608 fingerprinting module;
FIG. 6 is a circuit diagram of WT588D voice module;
FIG. 7 is a circuit diagram of a buzzer module;
FIG. 8a shows the peripheral circuitry of the ATK-SIM800C module;
FIG. 8b shows the peripheral circuitry of the ATK-SIM800C module;
FIG. 8c shows the peripheral circuitry of the ATK-SIM800C module;
fig. 8d shows a circuit diagram of the ATK-SIM800C module.
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
An attendance system based on face recognition comprises a main control module, an information acquisition module, a display module and a control end;
the information acquisition module includes camera subassembly and fingerprint identification module, the information acquisition module with host system's input electricity is connected, host system electricity be connected with the WIFI module in order to with the control end communication is connected, the display module with host system communication is connected in order to show attendance information, wherein:
the display module comprises a capacitive touch screen electrically connected with the main control module and an SIM module electrically connected with the main control module;
the camera assembly can comprise a camera and a motor driving module for driving the camera to rotate, wherein the motor driving module comprises a stepping motor and a ULN2003APG module, and gears with different sizes can be added inside the motor of the motor driving module to control the precision.
The stepping motor can be a 4-phase 5-wire stepping motor (model number is 28YBJ-48) of the Youqiao electronic technology limited company, the diameter is 28mm, the voltage is easily satisfied by 5V, the stepping angle is 5.625 x 1/64, and the weight of each stepping motor is 0.04 KG.
The double detection of the face recognition and the fingerprint recognition avoids the adverse phenomena of the prior college students, such as earning small benefits for others on class. Better supervise and urge students to stay on class, not arrive late, not retreat early, not absently.
Specifically, the control terminal is a PC terminal. The main control module is an STM32 single chip microcomputer. The single chip microcomputer is an embedded integrated circuit, the core of the chip is Cortex-M3, and the single chip microcomputer is an ARM microcontroller with low power consumption, low cost and high performance. The core size is 32 bits, the speed is 72 MHz, the program memory type is FLASH, the program memory capacity is 256KB, and the RAM capacity is 48K. The minimum system circuit diagram is shown in fig. 1A and 1B.
Specifically, the camera adopts a motor driving module which comprises a camera and drives the camera to rotate, the motor driving module comprises a stepping motor and an ULN2003APG module, and gears with different sizes can be added in the motor to control the precision. As shown in fig. 4, the motor drive interface circuit diagram is shown, in which A, B, C, D pin of the ULN2003APG module is connected to PF0, PF1, PF2, and PF3 pins of the STM32 single chip microcomputer, respectively.
The ATK-AS608 fingerprint recognition module of the present embodiment is a high-performance optical fingerprint recognition module introduced by ALIENTEK. AS shown in fig. 5, TX and RX of the AS608 module are respectively connected to PA3(RX) and PA2 (TX) of the STM32 single chip microcomputer.
The WIFI module has the function of performing wireless data interaction with the single chip microcomputer, and then the main control module formed by the single chip microcomputer reads data. The WIFI module is an ESP8266WIFI transmitter, as shown in fig. 2, wherein an RXD _ TTL pin of the ESP8266WIFI transmitter is connected to an RXD (PA 10 of STM32) pin of the STM32 singlechip, and a TXD _ TTL pin is connected to a TXD (PA 9 of STM32) of the STM32 singlechip.
The capacitive touch screen displays the attendance information analyzed by the main control module and modifies or supplements the attendance information. The capacitive touch screen is an ATK-4.3tft LCD module, as shown in fig. 3, wherein RST corresponds to RESET pin RESET of development board (STM32), LCD controller is RESET through development board RESET key, CS pin is connected with PG12 pin of STM32 singlechip, RS pin is connected with PG0 pin of STM32 singlechip, WR pin is connected with PD5 pin of STM32 singlechip, RD pin is connected with PD4 pin of STM32 singlechip, DB [15:0] (i.e. pins 6-21) is connected with FSMC _ D15-FSMC _ D0 pin of STM32 singlechip, MOSI (CT _ SDA) (i.e. pin 30, (CT _ SDA) is described for interface signal type), PF9 pin of STM32, CLK (CT _ SCL) (i.e. pin 34) is connected with PB1 pin of STM32, and singlechip (CT _ INT) (i.e. singlechip 31) is connected with PF 582 pin 10 of STM 6329, CS (CT _ RST) (i.e., pin 33) is connected to the PB2 pin of the STM32 singlechip.
The control method of the attendance system comprises the following steps:
the information acquisition module transmits the acquired information to the main control module, the main control module compares and analyzes the received information and the information in the database according to a face recognition algorithm written by the PC terminal by MATLAB, and transmits the analyzed attendance information to the display module by using an interface made by Visual Studio to complete the sign-in.
Before the attendance system is used, face information and fingerprint information are required to be recorded in advance to form a database and stored in the control terminal. In the identification process, the main control module compares and analyzes the received information with the information in the database according to the face identification algorithm written by the PC terminal by MATLAB.
Example 2
This embodiment is described based on embodiment 1, and its preferred structure is described.
Preferably, the system comprises a voice module and an alarm module.
The voice module is used for prompting, broadcasting the information of successful sign-in, and is equivalent to an information disclosure mode, so that students and teachers are reminded of successful sign-in at this time, and mishaps are avoided. And when a person is maliciously confused, signs in or identifies the situation of mismatch for many times, and the like, alarming.
The Voice module consists of a WT588D Voice Chip, a programmer and upper computer software WT588D Voice Chip for Voice downloading, programming and mode setting.
Circuit description as shown in fig. 6, when the upper computer software is used to write a voice program to the WT588D voice module, the IO port P03 selected as a first serial port control mode is defined as a DATA input port, and the single chip microcomputer controls the WT588D voice control module through the DATA port. Other IO ports can be used as keys. The P17 end is the BUSY signal output of BUSY, can set up to the broadcast state LED and light and broadcast state LED extinguishes, is connected with STM32 IO mouth.
The alarm module comprises a buzzer and a PNP triode. A buzzer is a sound-producing device, and is widely used in computers, printers, copiers, alarms, electronic toys, and the like. Here, alternating sounding of a passive buzzer is achieved using STM32, as shown in fig. 7, a single IO of STM32F1 can provide 25mA of current at maximum (data manual review), while the buzzer's drive current is 30 mA. Here, an NPN triode (S8050) is used to drive the buzzer in a current-spreading manner, and R37 is mainly used to prevent the buzzer from generating sound by mistake. The buzzer will sound when the BEEP outputs a high level, and stop sounding when the BEEP outputs a low level.
Example 3
In this embodiment, a processing method of attendance information is described on the basis of embodiment 1.
The attendance information comprises attendance, late arrival, leave request, absentence class, festival and holiday adjustment and deduction records; when attendance information is in the course, the main control module sends the course information to students in the course in a short message mode through the SIM module.
The SIM module is an ATK-SIM800C module, as shown in fig. 8, wherein a SIM800 TXD (UART1_ TXD) pin on the SIM800C module is connected with a PB11 pin of the STM32 singlechip, and a SIM800 RXD (UART1_ RXD) pin on the SIM800C module is connected with a PB10 pin of the STM32 singlechip.
1. Normal sign-in
After the student successfully signs in through face recognition or fingerprints, the master control module reads the sign-in information of the student and displays the sign-in information in the display module.
2. Is late to
When the student does not sign in within the specified time, the system judges that the student arrives late, and the student can carry out the sign supplementing. According to the lesson habits of teachers and the rules of schools, the system automatically deducts the corresponding ordinary scores of students.
3. Open course
According to the lesson habits of teachers and the rules of schools, the system automatically deducts the corresponding ordinary scores of students. The number of times of absence of work can be recorded, different regulations are required according to different schools, the absence of work is required after the time of arrival, examinations or other punishments cannot be taken in after the absence of work, and the like. The late, class absence, etc. are recorded in the statistical table.
4. Please leave
The students sometimes can not avoid emergencies, the students are ill and the like, the students need to ask for vacations, apply for the vacation slip to note the reason and hand over the teacher, the teacher can operate and send information through the capacitive touch screen to enable the system change information to be regarded as the attendance of the students as a vacation state, and the vacation state is counted in the statistical table.
And adding a corresponding attendance management module, and operating by a capacitive touch screen. The method is used for the teacher to correspondingly and flexibly set leave-asking types, late arrival types, broad classes, attendance time and attendance students. The leave type can be added, modified and deleted. The leave types include a number of activities such as participating in important activities, loss of leave, and sick leave. When meeting the factors of holidays or needing to mend courses, adjusting courses and the like, the class time or the name can be changed by manual operation.
The attendance record is presented in a table mode and can be inquired. The attendance record of a certain class can be shown by facilitating the observation of teachers or leaders, information can be obtained more accurately, and management is facilitated. The students have questions or errors about the attendance records, and can inquire verification or change the attendance records, and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. An attendance system based on face recognition is characterized by comprising a main control module, an information acquisition module, a display module and a control end;
the information acquisition module includes camera subassembly and fingerprint identification module, the information acquisition module with host system's input electricity is connected, host system electricity be connected with the WIFI module in order to with the control end communication is connected, the display module with host system communication is connected in order to show attendance information, wherein:
the display module comprises a capacitive touch screen electrically connected with the main control module and an SIM module electrically connected with the main control module;
the camera assembly comprises a camera and a motor driving module for driving the camera to rotate, and the motor driving module comprises a stepping motor and an ULN circuit board.
2. The attendance system of claim 1, wherein the control terminal is a PC terminal.
3. The attendance system of claim 1, wherein the master control module is an STM32 single chip microcomputer.
4. The attendance system as claimed in claim 3, wherein the WIFI module is an ESP8266WiFi transmitter, wherein an UTXD pin of the ESP8266WiFi transmitter is connected with an RXD pin of the STM32 singlechip, and the URXD pin is connected with a TXD pin of the STM32 singlechip.
5. The attendance system of claim 3, wherein the ULN circuit board is ULN2003APG, and wherein pin A, B, C, D is connected with pins PF0, PF1, PF2 and PF3 of an STM32 singlechip, respectively.
6. The attendance system as claimed in claim 3, wherein the capacitive touch screen is of the type ATK-4.3tft lcd module, the NCE pin of the ATK-4.3tft lcd module is connected to the PG12 pin of the STM32 single chip microcomputer, the RS pin is connected to the PG0 pin of the STM32 single chip microcomputer, the WR pin is connected to the PD5 pin of the STM32 single chip microcomputer, the RD pin is connected to the PD4 pin of the STM32 single chip microcomputer, D [15:0] is connected to the FSMC _ D15-FSMC _ D0 pin of the STM32 single chip microcomputer, MOSI (CT _ SDA) is connected to the PF9 pin of the STM32 single chip microcomputer, CLK (CT _ SCL) is connected to the PB1 pin of the STM32 single chip microcomputer, PEN (CT _ INT) is connected to the PF10 pin of the STM32, and CS (CT _ RST) is connected to the 2 pin of the STM32 PB single chip microcomputer.
7. The attendance system as claimed in claim 3, wherein the SIM module is an ATK-SIM800C module, wherein an STXD pin is connected with a PB11 pin of the STM32 singlechip, and an SRXD pin is connected with a PB10 pin of the STM32 singlechip.
8. The attendance system of claim 3, further comprising a voice module and an alarm module.
9. The attendance system of claim 8, wherein the alarm module comprises a buzzer and a PNP triode.
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| CN201921534082.2U CN210864746U (en) | 2019-09-16 | 2019-09-16 | Attendance system based on face recognition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112150658A (en) * | 2020-09-27 | 2020-12-29 | 湖南省青鸟博宇互联网有限公司 | Electronic signing system for teachers in higher vocational schools |
| CN112509163A (en) * | 2019-09-16 | 2021-03-16 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Attendance system based on face recognition and control method thereof |
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2019
- 2019-09-16 CN CN201921534082.2U patent/CN210864746U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509163A (en) * | 2019-09-16 | 2021-03-16 | 天津职业技术师范大学(中国职业培训指导教师进修中心) | Attendance system based on face recognition and control method thereof |
| CN112150658A (en) * | 2020-09-27 | 2020-12-29 | 湖南省青鸟博宇互联网有限公司 | Electronic signing system for teachers in higher vocational schools |
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