TWI520107B - Access control system and method thereof - Google Patents

Description

Access control system and method thereof

The present invention relates to an access control system and method thereof, and more particularly to an access control system and method thereof for preventing others from entering.

With the deterioration of law and order, people's lives and property are also threatened, and the general public's effectiveness in improving public security is still not satisfactory, thus achieving the vigorous development of security and access control system operators. The custom-made access control system was first used to manually enter and sign in and out of buildings. In recent years, the personal identification card system has been widely used in access control monitoring systems, and the types of personal identification cards include: barcodes, magnetic strips, Smart cards and RFID electronic tags.

However, since the current general access control system is only for one-time verification, and there is a problem that more than one person can pass the access control when only one person can enter and exit, it is impossible to effectively prevent illegal persons from following the legal person through the access control system.

In view of the above-mentioned problems of the prior art, it is an object of the present invention to provide an access control system and method thereof for solving the problems of the prior art. The law effectively prevents illegal personnel from following legal persons through the access control system.

According to the purpose of the present invention, an access control system is provided, which is disposed in an area having a first gate and a second gate. The access control system includes a first receiving module, a first depth image capturing module, a control module, and Verify the image capture module. The first receiving module is disposed at one end of the area and adjacent to the first gate, and the first receiving module can receive the first authentication message. The first depth image capturing module is disposed at the end of the area and adjacent to the first gate. The control module is coupled to the first receiving module and the first depth image capturing module. When the control module receives the first authentication message and determines that the first authentication message meets the authentication condition, the control module controls the first depth image. The module captures an image of an object in the exterior of the end of the region to generate a first depth image and controls the first gate to open. The verification image capturing module is coupled to the control module. When at least one object enters the area via the first gate and the first gate is closed, the control module controls the image of the object in the image capturing module of the image capturing module. To generate a first verification image. The control module controls the second gate to be opened when the control module determines that the number of object images in the first depth image matches the number of images of the verified legal object in the first verification image.

Preferably, the access control system further includes a second receiving module disposed at the other end of the area and adjacent to the second gate, and the second receiving module can receive the second authentication message.

Preferably, the access control system further includes a second depth image capturing module disposed at the other end of the area and adjacent to the second gate, the control module receiving the second authentication message, and determining that the second authentication message is in compliance with the authentication In the condition, the control module controls the image of the object in the exterior of the other end of the second depth image capturing module to generate the second depth image and controls the second gate to open.

Wherein, when the other at least one object enters the area via the second gate, and the second gate is closed, the control module controls the image of the object in the image capture module to be verified to generate the second verification image, and When the control module determines that the number of object images in the second depth image matches the number of images of the verified legal object in the second verification image, the control module controls the first gate to open.

Preferably, the access control system further includes a display module coupled to the control module, wherein the display module can display the comparison between the first depth image and the first verification image by the control module.

According to the purpose of the present invention, a door control method is provided, which has a first gate and a second gate in a region, and the access control method includes the following steps: receiving a first authentication message; and determining that the first authentication message meets the authentication condition, Capturing an image of an object in an outer portion of the region to generate a first depth image and controlling the first gate to open; closing the first gate and capturing an image of the object in the region to generate a first verification image; and determining When the number of object images in the first depth image matches the number of images of the verified legal object in the first verification image, the control module controls the second gate to open.

Preferably, the access control method further comprises the steps of: receiving the second authentication message; When it is determined that the second authentication message meets the authentication condition, the image of the object in the outside of the other end of the area is captured to generate a second depth image, and the second gate is controlled to be turned on.

Preferably, the access control method further comprises the steps of: closing the second gate and capturing an image of the object in the area to generate a second verification image.

Preferably, the access control method further comprises the steps of: controlling the first gate to be opened when determining that the number of the object images in the second depth image matches the number of the verified legal object images in the second verification image.

Preferably, the access control method further comprises the step of: displaying a comparison message between the first depth image and the first verification image.

In view of the above, the access control system and method thereof according to the present invention can have the following advantages:

(1) The access control system and its method can be combined with the pass permission control function, the identity information verification function and the depth image illegal trail detection function by the setting of each module, and are combined with the first gate and the second gate. In and out of the control mechanism, the access control has the advantages of unmanned management and can effectively improve the security level of access control, and can provide more strict access control for control places that require a higher level of security.

(2) The access control system and the method thereof can perform the depth image flow counting method by using the first depth image capturing module and the second depth image capturing module to overcome the environmental light shadow change and the number of people caused by the person shielding error At the same time, the passer's height information is used to assist the identity information verification, so as to prevent illegal traffic personnel from passing through the high security control area by disguising the legal personnel.

(3) The access control system and the method thereof can perform the identity information verification function and the depth image flow counting function by using the first depth image capturing module and the second depth image capturing module, thereby not only verifying the identity of the passer Information can also confirm legal traffic and detect illegal traffic.

(4) The access control system and its method are designed and designed in the design of the access control system. The two-way access control structure of the first gate and the second gate is different from the previous one-way access control system. Safety and integrity can also effectively reduce the cost of construction.

1‧‧‧Access Control System

10‧‧‧First Receiver Module

100‧‧‧First Certification Message

11‧‧‧First depth image capture module

110‧‧‧First depth image

12‧‧‧Control Module

13‧‧‧Verify image capture module

130‧‧‧First verification image

131‧‧‧Second verification image

14‧‧‧second receiving module

140‧‧‧Second certification message

15‧‧‧Second depth image capture module

150‧‧‧Second depth image

16‧‧‧Display module

2‧‧‧ Area

20‧‧‧The first gate

200‧‧‧External

21‧‧‧second gate

210‧‧‧External

3‧‧‧Employees

S40~S46, S50~S56‧‧‧ steps

Figure 1 is a first schematic view of an embodiment of the access control system of the present invention.

Figure 2 is a second schematic diagram of an embodiment of the access control system of the present invention.

Figure 3 is the first flow chart of the access control method of the present invention.

Figure 4 is a second flow chart of the access control method of the present invention.

The technical features, contents, and advantages of the present invention, as well as the advantages thereof, can be understood by the present inventors, and the present invention will be described in detail with reference to the accompanying drawings. The subject matter is only for the purpose of illustration and supplementary description. It is not necessarily the true proportion and precise configuration after the implementation of the present invention. Therefore, the scope and configuration relationship of the attached drawings should not be limited to the scope of patent application of the present invention. Narration.

The embodiments of the access control system and the method thereof according to the present invention will be described below with reference to the accompanying drawings. For the sake of understanding, the same components in the following embodiments are denoted by the same reference numerals.

Please refer to FIG. 1 and FIG. 2 , which are a first schematic diagram and a second schematic diagram of a first embodiment of the access control system of the present invention. As shown, the access control system 1 is disposed in a region 2 (such as a building), and the region 2 has a first gate 20 and a second gate 21, and the access control system 1 includes a first receiving module 10 and a first depth image capture system. The module 11, the control module 12 and the verification image capturing module 13 are provided. The first receiving module 10 is disposed at one end of the area 2 and adjacent to the first gate 20. The first receiving module 10 can receive the first authentication message 100, and the first receiving module 10 can be a card reader. The first depth image capturing module 11 is disposed at the end of the area 2 and adjacent to the first gate 20. The control module 12 is coupled to the first receiving module 10 and the first depth image capturing module 11 . When the control module 12 receives the first authentication message 100 and determines that the first authentication message 100 meets the authentication condition, the control module 12 Then, the first depth image capturing module 11 controls the image of the object in the outer portion of the region 2 to generate the first depth image 110, and controls the first gate 20 to be opened. The control module 12 can be a servo. end. The verification image capturing module 13 is coupled to the control module 12, and when at least one object enters the area 2 via the first gate 20, and the first gate 20 is closed, the control module 12 controls the verification image capturing module 13 to capture region An image of the object in 2 to generate a first verification image 130. When the control module 12 determines that the number of object images in the first depth image 110 matches the number of images of the verified legal object in the first verification image 130, the control module 12 controls the second gate 21 to be turned on.

Specifically, when a plurality of employees 3 (ie, objects) arrive at the exterior 200 of the area 2 (such as the company building verification area) and want to enter the other end 210 of the area 2 (such as inside the company building), the employee 3 can The first receiving module 10 uses the access card to enable the first receiving module 10 to receive the first authentication message 100. Then, the first receiving module 10 transmits the first authentication message 100 to the control module 12. After receiving the first authentication message 100, the control module 12 determines whether the first authentication message 100 meets the authentication condition, that is, whether the access card meets the requirements. The authority to open the first gate 20 is turned on. If the first authentication message 100 meets the authentication condition, the first depth image capturing module 11 is controlled to capture the image of the employee 3 located in the external portion 200 of the area 2 to generate the first depth image 110 (including the height of the person). The value and the number of people), and control the first gate 20 to open. If the control module 12 determines that the first authentication message 100 does not meet the authentication condition, the first gate 20 is not turned on. The control module 12 determines whether the first authentication message 100 meets the authentication condition, and also determines whether there is a person in the area 2 by the verification image capturing module 13, and if there is a person in the area 2, the first gate 20 will not open.

When the employee 3 has no access or has entered the area 2, the first gate 20 remains closed. At this time, if the employee 3 is located in the area 2, the control module 12 controls the verification image capturing module 13 to capture the face area of the employee 3 in the area 2 to generate the first verification image 130. Then, the control module 12 determines whether the number of object images in the first depth image 110 matches the number of object images in the first verification image 130, that is, the control module 12 according to the face region. The image and the person's height value are used to verify the identity information, and the legal number of the identity verification is accumulated. After a certain period of time, the control module 12 confirms that the number of people is the same and no illegal personnel trailing occurs, the control module 12 controls the second gate 21 to open, so that the employee 3 enters the other end of the area 2 outside the 210 (ie, the company building) internal).

In a certain period of time, the number of legal persons for identity information verification is different from the number of people in the verification area, that is, when a non-employee person follows the employee 3 and enters the area 2, it is determined that there may be an illegal person trailing situation, and the control module 1 will remain the second. The gate 21 is closed and the first gate 20 is opened to allow the person in the area 2 to exit the area 2 back to the exterior 2 of the area 2 and restart the access control process.

Accordingly, the access control system 1 of the present invention can provide a higher level of access control mechanism by combining the depth image flow counting technology, the access authority and the biometric identity verification function to avoid the occurrence of a trailing entry by others.

Please refer to Figure 1 and Figure 2. As shown in the figure, in the present embodiment, the access control system 1 preferably further includes a second receiving module 14 disposed at the other end of the area 2 and adjacent to the second gate 21, and the second receiving module 14 is A second authentication message 140 is received.

Furthermore, the access control system 1 preferably further includes a second depth image capturing module 15 disposed at the other end of the area 2 adjacent to the second gate 21, and the control module 12 receives the second authentication message 140, and When it is determined that the second authentication message 140 meets the authentication condition, the control module 12 controls the second depth image capturing module 15 to capture an image of an object in the exterior of the other end of the area 2 to generate a second depth image 150 and control The second gate 21 is opened.

When the other at least one object enters the area via the second gate 21, and the second gate 21 is closed, the control module 12 controls the image capturing module 13 to capture the image of the object in the area 2 to generate the image. When the control module 12 determines that the number of object images in the second depth image 150 matches the number of object images in the second verification image 131, the control module 12 controls the first gate 20 to be turned on.

That is, when an employee 3 wants to leave the company building, the other end 210 of the area 2 can be used, and the access card is used for the second receiving module 14 so that the second receiving module 14 receives the second authentication message 140. . Then, after receiving the second authentication message 140, the control module 12 determines whether the second authentication message 140 meets the authentication condition. If the second authentication message 140 meets the authentication condition, the second depth image capturing module 15 is controlled to capture the image of the employee 3 located in the external 210 of the other end of the area 22 to generate the second depth image 150 and control the second image. The gate 21 is opened. The control module 12 determines whether the second authentication message 140 meets the authentication condition, and also determines whether there is a person in the area 2 by the verification image capturing module 13 . If there is a person in the area 2, the second gate 21 will not open.

When the employee 3 enters the area 2, the second gate 21 remains closed. Wherein, the second gate 21 can be automatically closed by human or mechanical. Then, the employee 3 is located in the area 2, and the control module 12 controls the verification image capturing module 13 to capture the face area of the employee 3 in the area 2 to generate the second verification image 131. Then, the control module 12 determines whether the number of object images in the second depth image 150 meets the number of the verified legal object images in the second verification image 131. If the number of the verified legal objects in the second verification image 131 is within a certain time, the control module 12 confirms that the number of people is the same. After the trailing situation occurs, the control module 12 controls the first gate 20 to open, Allow employee 3 to arrive outside area 2 at an end 200 to leave the company building.

It can be seen that the access control system 1 of the present invention can be provided with two closed verification areas for the system control gates for blocking the high security control area and the low security control area, and by the first receiving module 10 and the The setting of the receiving module 14 is used to confirm whether the person has the right to enter and exit the area 2 (ie, the verification area). And the first image capturing module 11 and the second depth image capturing module are disposed in the area 2 and the image capturing module 13 is disposed in the area of the first gate 20 and the second gate 21 respectively. The depth image obtained by group 15 is used to calculate the number of people entering and leaving the verification area and the height of the person, thereby verifying the identity information of the person including the height value and detecting whether there is an illegal person trailing.

It is worth noting that when there is an employee 3 in the area 2 for verification, the first gate 20 and the second gate 21 are not allowed to be opened via the access card.

In addition, the access control system 1 preferably further includes a display module 16 coupled to the control module 12, the display module 16 can display the control module to compare the first depth image 110 with the first verification image 130, or the second The contrast image of the depth image 150 and the second verification image 131. Moreover, when the control module 12 determines that there may be an illegal person in the area 2, the control module 12 displays an alarm message via the display module 16 to notify the employee 3.

Although the concept of the access control method of the present invention has been described in the foregoing verification process of the access control system of the present invention, for the sake of clarity, the step flow chart is further illustrated below for detailed description.

Please refer to FIG. 3, which is the first flowchart of the access control method of the present invention. As shown in the figure, the access control method of the present invention includes the following steps: Step S40: receiving a first authentication message; Step S41: determining whether the first authentication message meets the authentication condition; if yes, proceeding to step S42; if not, proceeding to step S40; and step S42: capturing an image of the object outside the one end of the area to generate a first depth image, And controlling the first gate to be opened; step S43: closing the first gate and capturing an image of the object in the area to generate a first verification image; and step S44: determining whether the number of object images in the first depth image is consistent First, verifying the number of object images in the image; if yes, proceeding to step S45; if not, proceeding to step S46; step S45: controlling the second gate to be opened by the control module; step S46: closing the second gate and opening the first A gate.

In addition, when step S41 is performed, it is also determined whether there is an object in the area. If there is an object in the area, the first gate will not open, and the object in the area will exit the first gate or enter the second gate. In order to open the first gate.

Please refer to FIG. 4, which is a second flowchart of the access control method of the present invention. As shown in the figure, the access control method of the present invention further includes the following steps: Step S50: receiving a second authentication message; Step S51: determining whether the second authentication message meets the authentication condition; if yes, proceeding to step S52; if not, proceeding to step S50; Step S52: capturing an image of an object in an exterior of the other end of the area to generate a second depth image, and controlling the second gate to be turned on; Step S53: closing the second gate and capturing an image of the object in the area to generate a second verification image; and step S54: determining whether the number of object images in the second depth image conforms to the verification in the second verification image The number of object images; if yes, proceed to step S55; if not, proceed to step S56; and step S55: control the first gate to open.

Step S56: Close the first gate and open the second gate.

It is worth noting that, while performing step S51, it is also determined whether there is an object in the area. If there is an object in the area, the second gate will not open, and the object in the area is required to exit the second gate, or enter After the first gate, the second gate can be opened.

In addition, the access control method of the present invention preferably further includes the step of displaying the first depth image and the first verification image, or comparing the second depth image with the second verification image.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧Access Control System

10‧‧‧First Receiver Module

11‧‧‧First depth image capture module

12‧‧‧Control Module

13‧‧‧Verify image capture module

14‧‧‧second receiving module

15‧‧‧Second depth image capture module

16‧‧‧Display module

2‧‧‧ Area

20‧‧‧The first gate

200‧‧‧External

21‧‧‧second gate

210‧‧‧External

3‧‧‧Employees

Claims (10)

An access control system is disposed in an area having a first gate and a second gate. The access control system includes: a first receiving module disposed at one end of the area and adjacent to the first The first receiving module receives a first authentication message; a first depth image capturing module is disposed at the end of the area and adjacent to the first gate; a control module coupled The first receiving module and the first depth image capturing module, the control module receiving the first authentication message, and determining that the first authentication message meets an authentication condition, the control module controls the first The depth image capturing module captures an image of an object in the outer portion of the area to generate a first depth image and controls the first gate to be opened; and a verification image capturing module coupled to the control a module, when the at least one object enters the area via the first gate, and the first gate is closed, the control module controls the verification image capturing module to capture an image of the object in the area to generate a First verification shadow ; Wherein, when the control module determines whether the number of images of the object image in conformity with a first depth of the first number of verified legal verification image of the object image when the second control module controls the shutter is open. The access control system of claim 1, further comprising a second receiving module disposed at the other end of the area adjacent to the second gate, the second receiving module receiving a first Second certification message. For example, the access control system described in claim 2 of the patent scope further includes a first a second depth image capturing module disposed at the other end of the area and adjacent to the second gate, the control module receiving the second authentication message, and determining that the second authentication message meets the authentication condition, The control module controls the second depth image capturing module to capture an image of an object in the exterior of the other end of the area to generate a second depth image and control the second gate to open. The access control system of claim 3, wherein the control module controls the verification image capture when another at least one object enters the area via the second gate and the second gate is closed The module captures an image of the object in the area to generate a second verification image, and when the control module determines that the number of object images in the second depth image matches the number of object images in the second verification image The control module controls the first gate to open. The access control system of claim 1, further comprising a display module coupled to the control module, wherein the display module displays the control module to compare the first depth image with the first One of the verification images compares the messages. An access control method is applicable to an area having a first gate and a second gate. The access control method includes the steps of: receiving a first authentication message; and determining that the first authentication message meets the authentication condition Obtaining an image of an object in an exterior of one of the regions to generate a first depth image and controlling the first gate to open; closing the first gate and capturing an image of the object in the region to generate a First verification image; The control module controls the second gate to be opened when it is determined that the number of the object images in the first depth image matches the number of the verified legal object images in the first verification image. The access control method of claim 6, further comprising the steps of: receiving a second authentication message; and determining that the second authentication message meets the authentication condition, and extracting the other end of the area An image of the object to generate a second depth image and control the second gate to open. The access control method of claim 7, further comprising the steps of: closing the second gate and capturing an image of the object in the area to generate a second verification image. The access control method of claim 8, further comprising the steps of: determining that the number of object images in the second depth image matches the number of images of the verified legal object in the second verification image, and controlling the The first gate is open. The access control method of claim 6, further comprising the step of: displaying a comparison message between the first depth image and the first verification image.