CN112102548A - Access control system based on palm vein recognition and control method thereof - Google Patents
Access control system based on palm vein recognition and control method thereof Download PDFInfo
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- 210000003462 vein Anatomy 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012806 monitoring device Methods 0.000 claims abstract description 49
- 238000004891 communication Methods 0.000 claims abstract description 46
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000012795 verification Methods 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 10
- 230000006870 function Effects 0.000 description 9
- 238000013527 convolutional neural network Methods 0.000 description 8
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- 230000002159 abnormal effect Effects 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
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- 238000013528 artificial neural network Methods 0.000 description 1
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- 238000007477 logistic regression Methods 0.000 description 1
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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
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/32—Individual registration on entry or exit not involving the use of a pass in combination with an identity check
- G07C9/37—Individual registration on entry or exit not involving the use of a pass in combination with an identity check 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
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/38—Individual registration on entry or exit not involving the use of a pass with central registration
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
- G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
- G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- Lock And Its Accessories (AREA)
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Abstract
The invention discloses an access control system based on palm vein recognition and a control method thereof, wherein the access control system comprises a front-end access control part and a rear-end controller part; the front-end entrance and exit access control part comprises an access controller, an external portal palm vein acquisition device, an internal portal palm vein acquisition device, an external portal real-time infrared monitoring device, an internal portal real-time infrared monitoring device and a front-end LoRa communication module, wherein the external portal palm vein acquisition device, the internal portal palm vein acquisition device, the external portal real-time infrared monitoring device, the internal portal real-time infrared monitoring device and the front-end LoRa; the rear-end controller part comprises a system server, a database connected with the system server and a rear-end LoRa communication module; entrance guard's controller passes through front end loRa communication module and rear end loRa communication module wireless connection with system server. The system is added into an access control system through palm vein recognition, and the access control system needs to perform identity verification when going out of a door body or entering the door body under special application scenes such as prisons and psychiatric hospitals; and a real-time infrared monitoring function is added, so that the alarm can be given in real time when the illegal intrusion or the illegal exit occurs.
Description
Technical Field
The invention relates to an access control system, relates to palm vein recognition, and particularly relates to an access control system based on palm vein recognition and a control method thereof.
Background
In today's social environment, there is a difficult challenge in how to authenticate a person's identity. Particularly, in the entrance and exit access security management system, how to realize a more accurate and non-moldable modern access control system becomes an important research topic in the academic world.
Compared with recognition modes such as human face, iris, fingerprint, gait and handwriting, the vein recognition has unique advantages: it has the characteristics of no loss, no copying, natural existence along with the user and the like. The vein recognition is utilized to identify the identity, so that the method is convenient and quick, and has a series of advantages of higher recognition rate, higher accuracy and easiness in automatic management. The method is a new method which can replace the traditional identification.
However, the existing access control system is not enough to provide a one-way opening function or cannot realize intelligent alarm, identity verification is required for each entrance and exit of a same entrance in special places such as prisons and psychiatric hospitals, and no access control system specially designed for the places needing special protection for safety exists.
Disclosure of Invention
The invention aims to solve the problem of upgrading an entrance and exit access control system of a specific place such as a prison, a psychiatry hospital and the like, and provides an entrance and exit access control system based on palm vein recognition and a control method thereof, wherein the entrance and exit access control system can realize entrance and exit authentication of the same entrance and exit and has a real-time alarm function for illegal entrance and exit break-in and emergency events.
The technical scheme for realizing the invention is as follows:
an access control system based on palm vein recognition comprises
The system comprises a front-end entrance and exit entrance guard control part and a rear-end controller part, wherein the front-end entrance and exit entrance guard control part is connected with the rear-end controller part through wireless communication to realize real-time interaction;
the front-end entrance and exit entrance guard control part comprises an entrance guard controller, and an external door palm vein acquisition device, an internal door palm vein acquisition device, an external door real-time infrared monitoring device, an internal door real-time infrared monitoring device and a front-end LoRa communication module which are connected with the entrance guard controller;
the rear-end controller part comprises a system server, a database and a rear-end LoRa communication module, wherein the database and the rear-end LoRa communication module are connected with the system server;
entrance guard's controller passes through front end loRa communication module and rear end loRa communication module wireless connection with system server.
Furthermore, the door inner palm vein acquisition device is arranged on one side of an outlet of the inlet and outlet door body, and the door inner real-time infrared monitoring device is arranged above the outlet of the inlet and outlet door body; the outdoor palm vein acquisition device is arranged on one side of the entrance door body, and the outdoor real-time infrared monitoring device is arranged above the entrance of the entrance door body;
the entrance guard controller is connected with a lock body arranged on the door body.
Further, the system comprises a Subscriber Identity Module (SIM) card Module for mobile data wireless communication, wherein the SIM card Module is connected with the access controller.
This access control system based on palm vein discernment adopts palm vein discernment to have following advantage: the palm veins have universality, the veins can not change along with age change, the palm veins have strong invariance, the medical science is authenticated, the palm veins of each person are different and have strong uniqueness, the palm vein textures of each person are different, even the vein textures in the left hand and the right hand of each person are also different, and the palm veins are positioned below the skin surface layer and have the characteristic of being difficult to imitate compared with biological identification such as human faces, fingerprints and the like; meanwhile, compared with biological identification such as iris and the like, the device is simpler to realize and is easy to popularize in a large area; the access control system adopts palm vein recognition as an unlocking mechanism, so that the unlocking speed is high, and the safety is high; connecting the access control system with a back-end database, and recording the information of people coming in and going out in real time; the access control system has an abnormality detection function and can give an alarm in time when an abnormal condition occurs.
The control method of the access control system based on palm vein recognition comprises the following steps:
1) putting palms on an indoor palm vein acquisition device or an outdoor palm vein acquisition device by an entering and exiting person to acquire palm vein images, transmitting the acquired palm vein images into an access controller, and extracting features in the access controller; the identification signal is transmitted to the lock body, the indoor real-time infrared monitoring device, the outdoor real-time infrared monitoring device and the front-end LoRa communication module by the entrance guard controller after the identification is successful; if the identity recognition fails, the entrance guard controller sends out a buzzer to prompt that the verification fails, and the palm vein image acquisition is reminded to try again;
2) the lock body opens the door after receiving the identification success signal; after the indoor real-time infrared monitoring device and the outdoor real-time infrared monitoring device receive the identification success signal, the infrared detection is suspended for 10-15 seconds, and the infrared detection is restarted after the door body is closed;
3) after the front-end LoRa communication module receives the successful signal of discernment, the information transmission who will discern gives rear-end LoRa communication module, and rear-end LoRa communication module transmits received information transmission for system server, and system server will be gone into in and out personnel's information and time and record to the database.
Further, a step of sending alarm information is included, the step of sending alarm information includes
When the indoor real-time infrared monitoring device and the outdoor real-time infrared monitoring device detect that people are at the outlet and the inlet of the door body of the entrance and exit within 2-5 seconds, and meanwhile, the entrance guard controller does not send a recognition success signal, the entrance guard controller judges that the people enter and exit without permission, the entrance guard controller sends an alarm signal to the SIM card module, and the SIM card module sends alarm information to preset contacts.
Further, in the step 1), a palm vein image recognition method adopted by palm vein image acquisition adopts an improved VGG-16 convolutional neural network to extract and recognize the features of the image.
The control method is safe and efficient, and has better robustness and effectiveness compared with the traditional algorithm in the image feature extraction and identification process by adopting the trained convolutional neural network; the identification speed is high, and the accuracy is higher; the control logic is simple and is convenient to realize; the unlocking speed is high, and the safety is high; the information of people entering and exiting can be recorded in real time; the device has an abnormality detection function, and can give an alarm in time when an abnormal condition occurs.
The invention relates to a principle of an access control system based on palm vein recognition, which is characterized in that an entering person puts a palm on a palm vein acquisition device for palm vein image extraction, an access control controller utilizes a convolutional neural network for feature extraction of the extracted image and then compares the extracted image with a stored palm vein image, after identity recognition is successful, the access control controller transmits signals to a lock body, an indoor real-time infrared monitoring device, an outdoor real-time infrared monitoring device and a front-end Lora communication module, and after the lock body receives the recognition success signals, the lock body drives an electric control lock motor to realize unlocking and opening; after the real-time infrared monitoring system receives the signal, the infrared detection pause time of 10-15 seconds is provided, the door body opening time and the personnel passing time are given, and the infrared detection is restarted after the door body is closed; after receiving the signal, the front-end LoRa communication module transmits the information of the person coming in and going out to the rear-end LoRa communication module, the rear-end LoRa communication module transmits the received information to the server, and the server writes the information of the person coming in and going out and the time of coming in and going out into the database; the door real-time infrared monitoring device and the door real-time infrared monitoring device send alarm signals to the access control unit simultaneously, the access control unit sends signals to the SIM card module after receiving the signals of the infrared monitoring device, and the SIM card module sends information to preset contacts to realize real-time alarm.
The invention has the following beneficial effects or advantages: the palm vein recognition is added into the access control system in a biological recognition mode, and the access control system needs to perform identity verification when going out of a door body or entering the door body under special application scenes such as prisons and psychiatric hospitals; and a real-time infrared monitoring function is added, so that the alarm can be given in real time when the illegal intrusion or the illegal exit occurs.
Drawings
FIG. 1 is a block diagram of an access control system based on palm vein recognition according to an embodiment of the present invention;
FIG. 2 is a network architecture diagram of the convolutional neural network of the present invention;
FIG. 3 is a flowchart illustrating an operation of the access control system based on palm vein recognition according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the door control system assembled with the entrance/exit in the embodiment;
fig. 5 is a schematic structural view of the door control system assembled with the entrance of the doorway in the embodiment.
In the figure, 1, an indoor palm vein acquisition device 2, a door body 3, an indoor real-time infrared monitoring device 4, an outdoor palm vein acquisition device 5, an outdoor real-time infrared monitoring device 6, a lock body 7 and an access controller are arranged.
Detailed Description
The following will fully describe the series scheme in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 5, an access control system based on palm vein recognition includes
The system comprises a front-end entrance and exit entrance guard control part and a rear-end controller part, wherein the front-end entrance and exit entrance guard control part is connected with the rear-end controller part through wireless communication to realize real-time interaction;
the front-end entrance and exit entrance guard control part comprises an entrance guard controller 7, an external door palm vein acquisition device 4, an internal door palm vein acquisition device 1, an external door real-time infrared monitoring device 5, an internal door real-time infrared monitoring device 3 and a front-end LoRa communication module, wherein the external door palm vein acquisition device 4, the internal door palm vein acquisition device 1, the external door real-time infrared monitoring device 5, the internal door real-time infrared monitoring device 3 and the front-;
the rear-end controller part comprises a system server, a database and a rear-end LoRa communication module, wherein the database and the rear-end LoRa communication module are connected with the system server;
entrance guard's controller 7 passes through front end loRa communication module and rear end loRa communication module wireless connection with system server.
The indoor palm vein acquisition device 1 is arranged on one side of an outlet of the inlet and outlet door body 2, and the indoor real-time infrared monitoring device 3 is arranged above the outlet of the inlet and outlet door body 2; the outdoor palm vein acquisition device 4 is arranged on one side of the inlet and outlet door body 2, and the outdoor real-time infrared monitoring device 5 is arranged above the inlet of the inlet and outlet door body 2;
the entrance guard controller 7 is connected with the lock body 6 arranged on the door body 2.
Further, a SIM card module for mobile data wireless communication is included, and the SIM card module is connected with the gate controller 7.
Further, the access controller 7 is connected with a buzzer.
Specifically, the palm vein collector is a palm vein collector of LRCP2650_720P, KS2a17 or U02e type;
the real-time infrared monitoring device adopts an infrared measurement sensor with the model number of GP2-Y0A21-YKOF, a GWZX-H1 infrared human body sensor or other infrared human body sensors;
the LoRa communication module is of a model WH-L102-L-P;
the access controller 7 adopts a RaspBERRY-Pi4B type RASPBERRY pie;
the lock body 6 adopts a CK150A-NC/NO type cathode lock or other electric control locks.
The control method of the access control system based on palm vein recognition comprises the following steps:
1) the personnel of business turn over into are put the palm and are carried out palm vein image acquisition on hand palm vein collection system 1 or the outdoor palm vein collection system 4, and the palm vein image of gathering spreads into entrance guard's controller 7 into, and in entrance guard's controller 7, palm vein image is at first through the preliminary treatment: extracting an ROI (region of interest) and improving the image quality; sending the preprocessed palm vein image into a convolutional neural network for feature extraction; the identification signal is transmitted to the lock body 6, the indoor real-time infrared monitoring device 3, the outdoor real-time infrared monitoring device 5 and the front-end LoRa communication module by the access controller 7 after the identification is successful by comparing the identification signal with the palm vein image stored in the register in the access controller 7; if the identity recognition fails, the entrance guard controller 7 sends out a buzzer to prompt that the verification fails, and reminds to try again to acquire the palm vein image;
2) after the lock body 6 receives the identification success signal, a motor of the lock is driven to rotate, and unlocking and opening of the door are realized; after the indoor real-time infrared monitoring device 3 and the outdoor real-time infrared monitoring device 5 receive the identification success signal, the infrared detection is suspended for 10 to 15 seconds, the opening time and the personnel passing time of the door body 2 are given, and the infrared detection is started again after the door body 2 is closed;
3) after the front-end LoRa communication module receives the successful signal of discernment, the information transmission who will discern gives rear-end LoRa communication module, and rear-end LoRa communication module transmits received information transmission for system server, and system server will be gone into in and out personnel's information and time and record to the database.
Further, a step of sending alarm information is included, the step of sending alarm information includes
When the indoor real-time infrared monitoring device 3 and the outdoor real-time infrared monitoring device 5 detect that someone appears at the outlet and the inlet of the inlet and outlet door body 2 within 3 seconds, and meanwhile, the entrance guard controller 7 does not send a recognition success signal, the entrance guard controller 7 judges that the person enters and exits without permission, the entrance guard controller 7 sends an alarm signal to the SIM card module, and the SIM card module sends alarm information to preset contacts.
Further, in the step 1), the palm vein image recognition method adopted by the palm vein image acquisition is to extract and recognize the features of the image by adopting an improved VGG-16 convolutional neural network.
The improved VGG-16 convolutional neural network is composed of 13 convolutional layers and 3 fully-connected layers, wherein a ReLU function is used as an activation function in the convolutional layers, and the convolutional core of each convolutional layer is
The formula of the ReLU function is:
wherein
The number of independent variables, i.e. the input picture,
the picture information is the picture information after transformation.
After each convolutional layer and before the activation function, a BN (Batch Normalization) layer is added, which is called Batch Normalization and is widely applied to various places of deep learning, and the benefit of adding Batch Normalization is also obvious: the training speed can be accelerated, so that a network can be trained by using a larger learning rate, and batch processing can help us to automatically break up the training sequence, so that the same images are prevented from being continuously sent into the network, the overfitting problem in the neural network training process is suppressed, and the definition is as follows:
in the formula:
a bias item representing an input;
represents the input of
A piece of data;
representing an output item;
in fig. 2, each box represents a per-layer network structure, Input: the pixel size of the preprocessed palm vein image is 150 multiplied by 3; number of channels (Filter): representing the number of output channels per layer of convolution; convolution Kernel size (Kernel _ size): represents the size of each layer of convolution kernel, and the step sizes (threads) of convolution are unified to 1; max pooling (maxporoling): the step sizes (threads) of pooling are unified to 2; output (OUT): 2500 is the number of neurons used for classification by the last fully-connected layer (Fc); SoftMax (logistic regression): and a classifier for classifying the palm vein image.
The invention relates to a principle of an access control system based on palm vein recognition, which is characterized in that an entering person puts a palm on a palm vein acquisition device for palm vein image extraction, an access control controller utilizes a convolutional neural network for feature extraction of the extracted image and then compares the extracted image with a stored palm vein image, after identity recognition is successful, the access control controller transmits signals to a lock body, an indoor real-time infrared monitoring device, an outdoor real-time infrared monitoring device and a front-end Lora communication module, and after the lock body receives the recognition success signals, a driving motor is driven to realize unlocking and opening the door; after the real-time infrared monitoring system receives the signal, the infrared detection pause time of 10-15 seconds is provided, the door body opening time and the personnel passing time are given, and the infrared detection is restarted after the door body is closed; after receiving the signal, the front-end LoRa communication module transmits the information of the person coming in and going out to the rear-end LoRa communication module, the rear-end LoRa communication module transmits the received information to the server, and the server writes the information of the person coming in and going out and the time of coming in and going out into the database; the door real-time infrared monitoring device and the door real-time infrared monitoring device send alarm signals to the access control unit simultaneously, the access control unit sends signals to the SIM card module after receiving the signals of the infrared monitoring device, and the SIM card module sends information to preset contacts to realize real-time alarm.
Because the technical scheme of the invention is sufficient, the palm vein recognition technology and the wireless transmission technology are well integrated, the identity and time of people entering and leaving can be monitored in real time, the identity of the people passing through can be confirmed by the palm vein recognition method, and special scenes such as: emergencies occur in places such as prisons or mental hospitals.
In the description of the present invention, reference to the description of "one embodiment," "an example," etc., is intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment or example of the present invention.
The above disclosure of preferred embodiments of the invention is intended to be illustrative, and not exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (5)
1. An access control system based on palm vein recognition, which is characterized by comprising
The entrance guard control system comprises a front-end entrance guard control part and a rear-end controller part, wherein the front-end entrance guard control part is connected with the rear-end controller part through wireless communication;
the front-end entrance and exit entrance guard control part comprises an entrance guard controller, and an external door palm vein acquisition device, an internal door palm vein acquisition device, an external door real-time infrared monitoring device, an internal door real-time infrared monitoring device and a front-end LoRa communication module which are connected with the entrance guard controller;
the rear-end controller part comprises a system server, a database and a rear-end LoRa communication module, wherein the database and the rear-end LoRa communication module are connected with the system server;
entrance guard's controller passes through front end loRa communication module and rear end loRa communication module wireless connection with system server.
2. The palm vein identification-based access control system according to claim 1, wherein the door inner palm vein collection device is arranged on one side of an outlet of the inlet and outlet door body, and the indoor real-time infrared monitoring device is arranged above the outlet of the inlet and outlet door body; the outdoor palm vein acquisition device is arranged on one side of the entrance door body, and the outdoor real-time infrared monitoring device is arranged above the entrance of the entrance door body;
the entrance guard controller is connected with a lock body arranged on the door body.
3. The palm vein recognition-based access control system according to claim 1, comprising a SIM card module for mobile data wireless communication, wherein the SIM card module is connected with the access control device.
4. The control method of the palm vein recognition-based access control system of any one of claims 1 to 3, wherein the method comprises the steps of:
putting palms on an indoor palm vein acquisition device or an outdoor palm vein acquisition device by an entering and exiting person to acquire palm vein images, transmitting the acquired palm vein images into an access controller, and extracting features in the access controller; the identification signal is transmitted to the lock body, the indoor real-time infrared monitoring device, the outdoor real-time infrared monitoring device and the front-end LoRa communication module by the entrance guard controller after the identification is successful; if the identity recognition fails, the entrance guard controller sends out a buzzer to prompt that the verification fails, and the palm vein image acquisition is reminded to try again;
the lock body opens the door after receiving the identification success signal; after the indoor real-time infrared monitoring device and the outdoor real-time infrared monitoring device receive the identification success signal, the infrared detection is suspended for 10-15 seconds, and the infrared detection is restarted after the door body is closed;
after the front-end LoRa communication module receives the successful signal of discernment, the information transmission who will discern gives rear-end LoRa communication module, and rear-end LoRa communication module transmits received information transmission for system server, and system server will be gone into in and out personnel's information and time and record to the database.
5. The palm vein recognition-based access control method of claim 4, comprising a step of sending alarm information, wherein the step of sending alarm information comprises
When the indoor real-time infrared monitoring device and the outdoor real-time infrared monitoring device detect that people are at the outlet and the inlet of the door body of the entrance and exit within 2-5 seconds, and meanwhile, the entrance guard controller does not send a recognition success signal, the entrance guard controller judges that the people enter and exit without permission, the entrance guard controller sends an alarm signal to the SIM card module, and the SIM card module sends alarm information to preset contacts.
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| CN202010898680.9A CN112102548A (en) | 2020-08-31 | 2020-08-31 | Access control system based on palm vein recognition and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888780A (en) * | 2021-10-08 | 2022-01-04 | 深兰盛视科技（苏州）有限公司 | Strong security and protection place management method based on vein recognition and related device |
| CN114333129A (en) * | 2021-12-31 | 2022-04-12 | 重庆电子工程职业学院 | Wireless security control system based on internet of things |
-
2020
- 2020-08-31 CN CN202010898680.9A patent/CN112102548A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888780A (en) * | 2021-10-08 | 2022-01-04 | 深兰盛视科技（苏州）有限公司 | Strong security and protection place management method based on vein recognition and related device |
| CN114333129A (en) * | 2021-12-31 | 2022-04-12 | 重庆电子工程职业学院 | Wireless security control system based on internet of things |
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