CN109359457B - Intelligent access control system based on facial recognition - Google Patents
Intelligent access control system based on facial recognition Download PDFInfo
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- CN109359457B CN109359457B CN201811198084.9A CN201811198084A CN109359457B CN 109359457 B CN109359457 B CN 109359457B CN 201811198084 A CN201811198084 A CN 201811198084A CN 109359457 B CN109359457 B CN 109359457B
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Abstract
The invention discloses an intelligent access control system based on facial recognition, which comprises a face detection module, an information acquisition module, an angle calculation module, a controller, a light source control module, a light-emitting element, a data processing module, an indoor response module, an owner admission module, a Bluetooth interconnection module, an access control module, a safety door, an infrared sensor, an alarm module, a database, an input module and a display module, wherein the face detection module is used for detecting the face of a user; according to the invention, the data processing module is used for carrying out autonomous evaluation on each person in all visitors and identifying acquaintances in all visitors in the period, then the data processing module is used for recording the characteristic information of the identified acquaintances, the characteristic information is calibrated to be safety data and is transmitted to the database for storage, so that when the safety data is compared in the future, a processing signal is automatically transmitted to the controller, and the entrance guard control module is driven to open the safety door, so that the identification process is simplified, and the autonomous learning effect is achieved.
Description
Technical Field
The invention relates to the technical field of intelligent access control systems, in particular to an intelligent access control system based on facial recognition.
Background
An intelligent access control system is a system for controlling access and exit channels as the name implies, and is developed on the basis of a traditional door lock. The traditional mechanical door lock is only a pure mechanical device, no matter how reasonable the structural design is and how firm the material is, people can always open the door lock by various means, and when the pedestrian traffic is large, the management of the key of the mechanical door lock is troublesome, and the mechanical door lock needs to be replaced if the key is lost or the personnel change the key. Aiming at the problems, an intelligent access control system is derived, and the intelligent access control system has the advantages of convenience in operation, high safety coefficient, convenience in communication, simplification of a management flow and the like.
However, in the existing intelligent access control system, the recognition process cannot be realized, so that the direct incidence of the face is avoided, and the effective light supplementing operation can be achieved; meanwhile, the condition that one-time identification is carried out and multiple persons pass through cannot be warned; and autonomous learning is difficult to achieve.
In order to solve the above-mentioned drawbacks, a technical solution is now provided.
Disclosure of Invention
The invention aims to provide an intelligent access control system based on facial recognition.
The technical problems to be solved by the invention are as follows:
(1) how to realize the recognition process, the direct irradiation of the face is avoided, and the effective light supplementing operation can be achieved;
(2) how to warn the surrounding residents or related personnel when one-time identification is carried out and a plurality of people pass through the system;
(3) how to provide an effective way to implement autonomous learning.
The purpose of the invention can be realized by the following technical scheme:
an intelligent access control system based on facial recognition comprises a face detection module, an information acquisition module, an angle calculation module, a controller, a light source control module, a light-emitting element, a data processing module, an indoor response module, an owner admission module, a Bluetooth interconnection module, an access control module, a safety door, an infrared sensor, an alarm module, a database, an input module and a display module;
the human face detection module is used for detecting a human face image and automatically filtering a non-human face area, the automatically filtered non-human face area is used for automatically filling or blurring a background except the human face image, the detection precision is not influenced by the condition that some light reflection or shielding exists in the background by referring to the existing human face image processing technology, and the human face detection module is used for transmitting the detected human face image to the information acquisition module; the information acquisition module is used for acquiring position information in the face image, and the information acquisition module is used for transmitting the acquired position information to the angle calculation module; the angle calculation module is used for calculating the safety angle of the light-emitting element during irradiation according to the position information acquired by the information acquisition module so as to avoid direct irradiation of eyes and failure of effective light supplement, thereby influencing detection precision, and the angle calculation module starts calculation operation when receiving the position information acquired by the information acquisition module, and the specific steps are as follows:
the method comprises the following steps: respectively measuring and calculating a linear distance L1 between the light-emitting element and the nose of the human face and a linear distance L2 between the light-emitting element and the human face by using a laser ranging technology;
step two: using formulas
Calculating an angle alpha for avoiding direct injection to the eyes;
step three: then measuring and calculating a linear distance L3 between the light-emitting element and the chin of the human face by using a laser ranging technology;
step four: using formulas
To calculate an invalid illumination angle β;
when the angle calculation module acquires the angle alpha for avoiding direct injection to the eyes and the invalid irradiation angle beta in real time, the angle calculation module immediately calculates to obtain a safety angle alpha-beta, and at the moment, the angle calculation module transmits a control signal to the controller; when receiving the control signal transmitted by the angle calculation module, the controller transmits the control signal to the light source control module; the light source control module is used for receiving the control signal transmitted by the controller and controlling the light-emitting element to rotate according to the control signal so as to change the light-emitting angle; the light-emitting element can be a light supplement lamp or an illuminating lamp;
the system comprises an information acquisition module, a data processing module and a data infusion module, wherein the information acquisition module is used for acquiring feature information in a face image when the system is in the data infusion stage; the data processing module is used for sorting the characteristic information collected in the information collection module, and the data processing module is used for transmitting the sorted characteristic information to the indoor response module; the indoor response module is used for sending out a sound to prompt indoor personnel when the sorted characteristic information is received, and the indoor response module is also used for transmitting the sorted characteristic information to the owner service module; the owner permission module is used for controlling the opening and closing of the safety door and transmitting the sorted characteristic information to the Bluetooth interconnection module; the Bluetooth interconnection module is used for transmitting a processing signal of an owner to the owner permission module, and the Bluetooth interconnection module is connected with the owner mobile phone through Bluetooth;
the middle operation stage of the system involves a data calculation stage, and when the system is in the data calculation stage, the data processing module is further configured to perform an autonomous evaluation operation on all visitors according to the sorted characteristic information, and the data processing module starts to perform the autonomous evaluation when receiving the characteristic information transmitted by the information acquisition module, and the specific steps are as follows:
the method comprises the following steps: acquiring records of all visitors in a period of time, and correspondingly marking all visitors in the period of time as Ri, i-1.. n;
step two: acquiring the corresponding total number of times of access of each visitor in the period, and marking the number as Zi, i-1.. n, wherein Zi corresponds to Ri one by one;
step three: acquiring the residence time of each person in and out of all visitors in the period, and marking the residence time as Yij, i is 1.. m, j is 1.. n, namely when i is 1, Y1j corresponds to R1, and when j is 1.. n, the residence time of each person in and out of R1 is represented;
step four: acquiring the total in-out residence time Ti corresponding to each visitor in all visitors in the period, wherein i is 1.. n, and Ti is in one-to-one correspondence with Ri;
step five: according to the formula
N, calculating the average residence time of each visitor in the period;
step six: according to the formula
N, obtaining the dispersion coefficient of each stay time length corresponding to each person among all visitors in the period, and Lp and Ri are in one-to-one correspondence, that is, when i is equal to p is 1, R1 and L1 correspond to each other, and the dispersion coefficient of each stay time length corresponding to R1 is R1
The data processing module is used for sequencing numerical values of Ui, Zi and Ti which correspond to each person in all visitors in the period from small to large after acquiring a discrete coefficient Lp of each stay time corresponding to each person in all visitors in the period, and autonomously judging that the visitor Ri is an acquaintance when the visitor Ri corresponding to the minimum value in the Lp and the visitor Ri corresponding to the maximum value of any two of the Ui, Zi and Ti are the same person;
the later stage of the system operation can involve a data judgment stage, and when the system is positioned in the data judgment stage, the data processing module can also be used for recording the characteristic information of the acquaintance and calibrating the characteristic information as safety data to be transmitted to the database for storage; the safety data is used for comparing the data processing module during subsequent identification, and the data processing module automatically transmits a door opening signal to the controller when the data processing module compares consistent characteristic information; the controller transmits a door opening signal to the access control module when receiving the door opening signal transmitted by the data processing module; the access control module controls the safety door to be opened when receiving the door opening signal transmitted by the data processing module, and is used for controlling the safety door to be opened and closed so as to achieve the effect of autonomous learning; when the data processing module does not compare the safety data, the corresponding characteristic information acquired by the person in the information acquisition module is transmitted to the indoor response module; the indoor response module is also used for transmitting the corresponding characteristic information of the person to the owner admission module; the owner permission module is used for controlling the opening and closing of the safety door, and the owner permission module is also used for transmitting the corresponding characteristic information of the owner to the Bluetooth interconnection module; the bluetooth interconnection module can show at the owner's cell-phone when receiving this people's corresponding characteristic information, bluetooth interconnection module still is used for letting through the module with the processing signal transmission of owner to owner, link to each other through the bluetooth between bluetooth interconnection module and the owner's cell-phone, and come the switching of control emergency exit according to the processing signal of owner, the real-time condition of visiting of knowing of the owner of being convenient for.
Furthermore, the entry module is used for entering and deleting the characteristic information registered in the database, so that the owner can conveniently control the opening of the safety door by the personnel who can automatically control the opening of the safety door.
Furthermore, the infrared sensor is used for monitoring the quantity information of passing personnel in real time and transmitting the quantity information of passing personnel to the controller, the controller can transmit an alarm signal to the alarm module when the quantity information of passing personnel exceeds a preset value, and the alarm module can automatically give an alarm when receiving the alarm signal transmitted by the controller so as to play a warning effect on surrounding residents or related personnel.
Further, the feature information may be a distance between two eyes, a width of a nose, a depth of an eye socket, a distance between two ears, and a distance between two eyebrows in the face.
Further, the data processing module can be used for transmitting Zi, Ti and Ui to the controller, and the controller can transmit Zi, Ti and Ui to the display module for real-time display so that the owner can view the Zi, Ti and Ui in and out.
The invention has the beneficial effects that:
(1) according to the invention, the collected position information is transmitted to the angle calculation module through the information collection module, the angle calculation module can calculate the angle alpha and the invalid irradiation angle beta for avoiding direct irradiation to the eyes according to the position information and immediately obtain the safety angle alpha-beta, meanwhile, the angle calculation module can transmit a control signal to the controller, and the controller can transmit the control signal to the light source control module in real time when receiving the control signal, so that the light source control module can control the light-emitting element to move to the safety angle, thereby avoiding the situation that the light irradiates the face directly and the effective light supplement operation is difficult to achieve in the identification process;
(2) according to the invention, the information of the number of people passing through is monitored in real time through the infrared sensor, if the number of people passing through exceeds a preset value, an alarm can be automatically sent out through the alarm module, and the alarm module can be an alarm or a buzzer so as to play a warning effect on surrounding residents or related people and prevent the situation that one person is identified and multiple people pass through the alarm module, thereby further influencing the personal and property safety of the residents;
(3) the invention carries out autonomous judging operation on the characteristic information transmitted by the information acquisition module through the data processing module, when the numerical values of Lp, Ui, Zi and Ti corresponding to each person in all visitors in the period are acquired, that is, each person Ri in all visitors in the period is evaluated, and when the visitor Ri corresponding to the minimum value in Lp, when the visitor Ri corresponding to the maximum value of any two of Ui, Zi and Ti is the same person, the visitor Ri is determined as an acquaintance, the data processing module records the characteristic information of the determined acquaintance and marks the characteristic information as safety data to be transmitted to the database for storage, when the safety data are compared in the future, the safety door is automatically opened by the controller driving and controlling the access control module, so that the process of autonomous learning is realized.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, an intelligent access control system based on facial recognition comprises a face detection module, an information acquisition module, an angle calculation module, a controller, a light source control module, a light emitting element, a data processing module, an indoor response module, an owner permission module, a bluetooth interconnection module, an access control module, a security door, an infrared sensor, an alarm module, a database, an entry module and a display module;
the human face detection module is used for detecting a human face image and automatically filtering a non-human face area, the automatically filtered non-human face area is used for automatically filling or blurring a background except the human face image, the human face image with the best effect can be detected by referring to the existing human face image processing technology, so that the detection precision is prevented from being influenced by the condition that some light reflection or shielding exists in the background, and the human face detection module is used for transmitting the detected human face image to the information acquisition module; the information acquisition module is used for acquiring position information in the face image, and the information acquisition module is used for transmitting the acquired position information to the angle calculation module; the angle calculation module is used for calculating the safety angle of the light-emitting element during irradiation according to the position information acquired by the information acquisition module so as to avoid direct irradiation of eyes and failure of effective light supplement, thereby influencing detection precision, and the angle calculation module starts calculation operation when receiving the position information acquired by the information acquisition module, and the specific steps are as follows:
the method comprises the following steps: respectively measuring and calculating a linear distance L1 between the light-emitting element and the nose of the human face and a linear distance L2 between the light-emitting element and the human face by using a laser ranging technology;
step two: using formulas
Calculating an angle alpha for avoiding direct injection to the eyes;
step three: then measuring and calculating a linear distance L3 between the light-emitting element and the chin of the human face by using a laser ranging technology;
step four: using formulas
To calculate an invalid illumination angle β;
when the angle calculation module acquires the angle alpha for avoiding direct injection to the eyes and the invalid irradiation angle beta in real time, the angle calculation module immediately calculates to obtain a safety angle alpha-beta, and at the moment, the angle calculation module transmits a control signal to the controller; when receiving the control signal transmitted by the angle calculation module, the controller transmits the control signal to the light source control module; the light source control module is used for receiving the control signal transmitted by the controller and controlling the light-emitting element to rotate according to the control signal so as to change the light-emitting angle; the light-emitting element can be a light supplement lamp or an illuminating lamp;
the system comprises an information acquisition module, a data processing module and a data infusion module, wherein the information acquisition module is used for acquiring feature information in a face image when the system is in the data infusion stage; the data processing module is used for sorting the characteristic information collected in the information collection module, and the data processing module is used for transmitting the sorted characteristic information to the indoor response module; the indoor response module is used for sending out a sound to prompt indoor personnel when the sorted characteristic information is received, and the indoor response module is also used for transmitting the sorted characteristic information to the owner service module; the owner permission module is used for controlling the opening and closing of the safety door and transmitting the sorted characteristic information to the Bluetooth interconnection module; the Bluetooth interconnection module is used for transmitting a processing signal of an owner to the owner permission module, and the Bluetooth interconnection module is connected with the owner mobile phone through Bluetooth;
the middle operation stage of the system involves a data calculation stage, and when the system is in the data calculation stage, the data processing module is further configured to perform an autonomous evaluation operation on all visitors according to the sorted characteristic information, and the data processing module starts to perform the autonomous evaluation when receiving the characteristic information transmitted by the information acquisition module, and the specific steps are as follows:
the method comprises the following steps: acquiring records of all visitors in a period of time, and correspondingly marking all visitors in the period of time as Ri, i-1.. n;
step two: acquiring the corresponding total number of times of access of each visitor in the period, and marking the number as Zi, i-1.. n, wherein Zi corresponds to Ri one by one;
step three: acquiring the residence time of each person in and out of all visitors in the period, and marking the residence time as Yij, i is 1.. m, j is 1.. n, namely when i is 1, Y1j corresponds to R1, and when j is 1.. n, the residence time of each person in and out of R1 is represented;
step four: acquiring the total in-out residence time Ti corresponding to each visitor in all visitors in the period, wherein i is 1.. n, and Ti is in one-to-one correspondence with Ri;
step five: according to the formula
N, calculating the average residence time of each visitor in the period;
step six: according to the formula
N, obtaining the dispersion coefficient of each stay time length corresponding to each person among all visitors in the period, and Lp and Ri are in one-to-one correspondence, that is, when i is equal to p is 1, R1 and L1 correspond to each other, and the dispersion coefficient of each stay time length corresponding to R1 is R1
The data processing module is used for sequencing numerical values of Ui, Zi and Ti which correspond to each person in all visitors in the period from small to large after acquiring a discrete coefficient Lp of each stay time corresponding to each person in all visitors in the period, and autonomously judging that the visitor Ri is an acquaintance when the visitor Ri corresponding to the minimum value in the Lp and the visitor Ri corresponding to the maximum value of any two of the Ui, Zi and Ti are the same person;
the later stage of the system operation can involve a data judgment stage, and when the system is positioned in the data judgment stage, the data processing module can also be used for recording the characteristic information of the acquaintance and calibrating the characteristic information as safety data to be transmitted to the database for storage; the safety data is used for comparing the data processing module during subsequent identification, and the data processing module automatically transmits a door opening signal to the controller when the data processing module compares consistent characteristic information; the controller transmits a door opening signal to the access control module when receiving the door opening signal transmitted by the data processing module; the access control module controls the safety door to be opened when receiving the door opening signal transmitted by the data processing module, and is used for controlling the safety door to be opened and closed so as to achieve the effect of autonomous learning; when the data processing module does not compare the safety data, the corresponding characteristic information acquired by the person in the information acquisition module is transmitted to the indoor response module; the indoor response module is also used for transmitting the corresponding characteristic information of the person to the owner admission module; the owner permission module is used for controlling the opening and closing of the safety door, and the owner permission module is also used for transmitting the corresponding characteristic information of the owner to the Bluetooth interconnection module; the bluetooth interconnection module can show at the owner's cell-phone when receiving this people's corresponding characteristic information, bluetooth interconnection module still is used for letting through the module with the processing signal transmission of owner to owner, link to each other through the bluetooth between bluetooth interconnection module and the owner's cell-phone, and come the switching of control emergency exit according to the processing signal of owner, the real-time condition of visiting of knowing of the owner of being convenient for.
Furthermore, the entry module is used for entering and deleting the characteristic information registered in the database, so that the owner can conveniently control the opening of the safety door by the personnel who can automatically control the opening of the safety door.
Furthermore, the infrared sensor is used for monitoring the quantity information of passing personnel in real time and transmitting the quantity information of passing personnel to the controller, the controller can transmit an alarm signal to the alarm module when the quantity information of passing personnel exceeds a preset value, and the alarm module can automatically give an alarm when receiving the alarm signal transmitted by the controller so as to play a warning effect on surrounding residents or related personnel.
Further, the feature information may be a distance between two eyes, a width of a nose, a depth of an eye socket, a distance between two ears, and a distance between two eyebrows in the face.
Further, the data processing module can be used for transmitting Zi, Ti and Ui to the controller, and the controller can transmit Zi, Ti and Ui to the display module for real-time display so that the owner can view the Zi, Ti and Ui in and out.
An intelligent access control system based on face recognition is characterized in that during operation, a face detection module transmits a detected face image to an information acquisition module, then the information acquisition module transmits position information in the acquired face image to an angle calculation module, the angle calculation module is utilized to calculate a safety angle alpha-beta immediately, and meanwhile, a control signal is transmitted to a controller, so that a light source control module controls a light-emitting element to move to the safety angle alpha-beta after receiving the control signal, and light is prevented from directly irradiating the face and being difficult to achieve effective light supplement operation in the recognition process;
when the face detection module detects a face image, the information acquisition module can acquire characteristic information in the face image, then the characteristic information is transmitted to the data processing module, the characteristic information is arranged by the data processing module and then transmitted to the indoor response module, meanwhile, the indoor response module can make a sound to prompt indoor personnel, then the indoor response module transmits the arranged characteristic information to the owner permission module and transmits the characteristic information to the Bluetooth interconnection module, the Bluetooth interconnection module is connected with an owner mobile phone through Bluetooth, the arranged characteristic information is displayed on the owner mobile phone, and the Bluetooth interconnection module can also transmit a processing signal of the owner to the owner permission module and controls the opening of a safety door through the owner permission module, so that the owner can know the information of the visiting personnel in real time; meanwhile, the data processing module can also carry out autonomous evaluation on all visitors according to the sorted characteristic information, when the numerical values of Lp, Ui, Zi and Ti corresponding to each visitor in all visitors in the period are obtained, each Ri in all visitors in the period is evaluated, and according to the visitor Ri corresponding to the minimum value in Lp, the visitor Ri corresponding to the maximum value of any two of Ui, Zi and Ti is the same person, the visitor Ri is determined to be an acquaintance, then the characteristic information of the determined acquaintance is recorded through the data processing module and is calibrated to be safe data to be transmitted to the database for storage, when the safe data is compared in the future, the processing signal is automatically transmitted to the controller, and the control module is driven to open the safety door, when the safe data is not compared in the future, then, the same corresponding characteristic information collected in the information collection module is transmitted to the indoor response module through the data processing module, the indoor response module can make a sound to prompt indoor personnel, then the indoor response module transmits the sorted characteristic information to the owner permission module, the owner permission module transmits the sorted characteristic information to the Bluetooth interconnection module, the Bluetooth interconnection module is connected with an owner mobile phone through Bluetooth, the sorted characteristic information is displayed on the owner mobile phone, the Bluetooth interconnection module can also transmit a processing signal of the owner to the owner permission module, and the owner permission module controls the opening of the safety door, so that the effect of realizing autonomous learning is achieved;
and the infrared sensor can monitor the quantity information of passing personnel in real time, when the quantity of passing personnel exceeds a preset value, the alarm module can automatically send out an alarm to play a warning effect on surrounding residents or related personnel, so that the condition that a plurality of people pass through the alarm module is prevented from being identified by one person, and the personal and property safety of the residents is further influenced.
The invention has the following beneficial effects:
(1) according to the invention, the collected position information is transmitted to the angle calculation module through the information collection module, the angle calculation module can calculate the angle alpha and the invalid irradiation angle beta for avoiding direct irradiation to the eyes according to the position information and immediately obtain the safety angle alpha-beta, meanwhile, the angle calculation module can transmit a control signal to the controller, and the controller can transmit the control signal to the light source control module in real time when receiving the control signal, so that the light source control module can control the light-emitting element to move to the safety angle, thereby avoiding the situation that the light irradiates the face directly and the effective light supplement operation is difficult to achieve in the identification process;
(2) according to the invention, the information of the number of people passing through is monitored in real time through the infrared sensor, if the number of people passing through exceeds a preset value, an alarm can be automatically sent out through the alarm module, and the alarm module can be an alarm or a buzzer so as to play a warning effect on surrounding residents or related people and prevent the situation that one person is identified and multiple people pass through the alarm module, thereby further influencing the personal and property safety of the residents;
(3) the invention carries out autonomous judging operation on the characteristic information transmitted by the information acquisition module through the data processing module, when the numerical values of Lp, Ui, Zi and Ti corresponding to each person in all visitors in the period are acquired, that is, each person Ri in all visitors in the period is evaluated, and when the visitor Ri corresponding to the minimum value in Lp, when the visitor Ri corresponding to the maximum value of any two of Ui, Zi and Ti is the same person, the visitor Ri is determined as an acquaintance, the data processing module records the characteristic information of the determined acquaintance and marks the characteristic information as safety data to be transmitted to the database for storage, when the safety data are compared in the future, the safety door is automatically opened by the controller driving and controlling the access control module, so that the process of autonomous learning is realized.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (5)
1. An intelligent access control system based on facial recognition is characterized by comprising a face detection module, an information acquisition module, an angle calculation module, a controller, a light source control module, a light-emitting element, a data processing module, an indoor response module, an owner admission module, a Bluetooth interconnection module, an access control module, a safety door, an infrared sensor, an alarm module, a database, an input module and a display module;
the human face detection module is used for detecting a human face image and automatically filtering a non-human face area, and the human face detection module is used for transmitting the detected human face image to the information acquisition module; the information acquisition module is used for acquiring position information in the face image, and the information acquisition module is used for transmitting the acquired position information to the angle calculation module; the angle calculation module is used for calculating the safety angle of the light-emitting element during irradiation according to the position information acquired by the information acquisition module, and the angle calculation module starts to perform calculation operation when receiving the position information acquired by the information acquisition module, and the method comprises the following specific steps:
the method comprises the following steps: respectively measuring and calculating a linear distance L1 between the light-emitting element and the nose of the human face and a linear distance L2 between the light-emitting element and the human face by using a laser ranging technology;
step two: using formulas
Calculating an angle alpha for avoiding direct injection to the eyes;
step three: then measuring and calculating a linear distance L3 between the light-emitting element and the chin of the human face by using a laser ranging technology;
step four: using formulas
To calculate an invalid illumination angle β;
when the angle calculation module acquires the angle alpha for avoiding direct injection to the eyes and the invalid irradiation angle beta in real time, the angle calculation module immediately calculates to obtain a safety angle alpha-beta, and at the moment, the angle calculation module transmits a control signal to the controller; when receiving the control signal transmitted by the angle calculation module, the controller transmits the control signal to the light source control module; the light source control module is used for receiving a control signal transmitted by the controller and controlling the light-emitting element to rotate according to the control signal;
the system comprises an information acquisition module, a data processing module and a data infusion module, wherein the information acquisition module is used for acquiring feature information in a face image when the system is in the data infusion stage; the data processing module is used for sorting the characteristic information collected in the information collection module, and the data processing module is used for transmitting the sorted characteristic information to the indoor response module; the indoor response module is used for sending out a sound to prompt indoor personnel when the sorted characteristic information is received, and the indoor response module is also used for transmitting the sorted characteristic information to the owner service module; the owner permission module is used for controlling the opening and closing of the safety door and transmitting the sorted characteristic information to the Bluetooth interconnection module; the Bluetooth interconnection module is used for displaying the characteristic information on the owner mobile phone when receiving the characteristic information, transmitting a processing signal of an owner to the owner permission module, and connecting the Bluetooth interconnection module with the owner mobile phone through Bluetooth;
the middle operation stage of the system involves a data calculation stage, and when the system is in the data calculation stage, the data processing module is further configured to perform an autonomous evaluation operation on all visitors according to the sorted characteristic information, and the data processing module starts to perform the autonomous evaluation when receiving the characteristic information transmitted by the information acquisition module, and the specific steps are as follows:
the method comprises the following steps: acquiring records of all visitors in a period of time, and correspondingly marking all visitors in the period of time as Ri, i-1.. n;
step two: acquiring the corresponding total number of times of access of each visitor in the period, and marking the number as Zi, i-1.. n, wherein Zi corresponds to Ri one by one;
step three: acquiring the residence time per entry and exit corresponding to each visitor in the period, and marking the residence time per entry and exit as Yij, i is 1.. m, j is 1.. n, namely when i is 1, Y1j corresponds to R1, and when j is 1.. n, Y1j represents the residence time per entry and exit of R1;
step four: acquiring the total in-out residence time Ti corresponding to each visitor in all visitors in the period, wherein i is 1.. n, and Ti is in one-to-one correspondence with Ri;
step five: according to the formula
Obtaining the average residence time of each person in all visitors in the period;
step six: according to the formula
Obtaining the dispersion coefficient of each stay time corresponding to each visitor in the period, and Lp and Ri are in one-to-one correspondence, that is, when i is equal to p is equal to 1, R1 and L1 correspond, and the dispersion coefficient of each stay time corresponding to R1 is
The data processing module is used for sequencing numerical values of Ui, Zi and Ti which correspond to each person in all visitors in the period from small to large after acquiring a discrete coefficient Lp of each stay time corresponding to each person in all visitors in the period, and autonomously judging that the visitor Ri is an acquaintance when the visitor Ri corresponding to the minimum value in the Lp and the visitor Ri corresponding to the maximum value of any two of the Ui, Zi and Ti are the same person;
the later stage of the system operation can involve a data judgment stage, and when the system is positioned in the data judgment stage, the data processing module can also be used for recording the characteristic information of the acquaintance and calibrating the characteristic information as safety data to be transmitted to the database for storage; the safety data is used for comparing the data processing module during subsequent identification, and the data processing module automatically transmits a door opening signal to the controller when the data processing module compares consistent characteristic information; the controller transmits a door opening signal to the access control module when receiving the door opening signal transmitted by the data processing module; the access control module controls the opening of the safety door when receiving the door opening signal transmitted by the data processing module, and is used for controlling the opening and closing of the safety door; when the data processing module does not compare the safety data, the corresponding characteristic information acquired by the person in the information acquisition module is transmitted to the indoor response module; the indoor response module is also used for transmitting the corresponding characteristic information of the person to the owner admission module; the owner permission module is used for controlling the opening and closing of the safety door, and the owner permission module is also used for transmitting the corresponding characteristic information of the owner to the Bluetooth interconnection module; the bluetooth interconnection module can show at the owner's cell-phone when receiving this people's corresponding characteristic information, bluetooth interconnection module still is used for letting through the module with the processing signal transmission of owner to owner, link to each other through the bluetooth between bluetooth interconnection module and the owner's cell-phone, and control the switching of emergency exit according to the processing signal of owner.
2. The intelligent access control system based on facial recognition is characterized in that the entry module is used for entering and deleting characteristic information registered in a database.
3. The intelligent access control system based on facial recognition as claimed in claim 1, wherein the infrared sensor is used for monitoring the passing quantity information of the personnel in real time and transmitting the passing quantity information of the personnel to the controller, the controller transmits an alarm signal to the alarm module when the passing quantity information of the personnel exceeds a preset value, and the alarm module automatically gives an alarm when receiving the alarm signal transmitted by the controller.
4. The intelligent access control system based on facial recognition as claimed in claim 1, wherein the feature information can be the distance between two eyes, the width of nose, the depth of eye socket, the distance between two ears and the distance between two eyebrows in human face.
5. The intelligent door access system based on facial recognition as claimed in claim 1, wherein the data processing module is further configured to transmit Zi, Ti and Ui to the controller, and the controller transmits Zi, Ti and Ui to the display module for real-time display.
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| CN108389297A (en) * | 2018-03-27 | 2018-08-10 | 成都蓉创智谷科技有限公司 | A kind of access control system of recognition of face |
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| CN108389297A (en) * | 2018-03-27 | 2018-08-10 | 成都蓉创智谷科技有限公司 | A kind of access control system of recognition of face |
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