TW201426641A - Access control system and method for vehicles - Google Patents

Abstract

Disclosure is related to an access control system for vehicles and a method thereof. In accordance with an embodiment of the present invention, the access control system uses a wide-angle photographing unit to capture continuous images from an entrance of a control zone. An image recognition means is introduced to continuously capturing and obtaining the plate's position. The information of the entered vehicle's license plate will be determined. After that, the system allows the vehicle to enter the control zone if the vehicle passes a verification process. The verification process may result in triggering a gate to open, and therefore the verified vehicle is permitted to pass the gateway and directly enter the control zone. It is featured that the verified vehicle may not stop to wait the verification result rather than the usual ways in prior technologies.

Description

Vehicle access control system and method

The present invention is a vehicle access control system and method, and more particularly to a control system and method for capturing a vehicle using a wide-angle camera while simultaneously identifying a license plate and thereby controlling the gate.

The prior art provides a way to manage the entry and exit of various parking lots, the purpose of which is only for the sake of safety, and to verify the identity of the entering vehicle, especially the private parking lot. The general management methods include human judgment, driver identification identification, Vehicle license plate recognition and the possibility of applying radio frequency identification (RFID) management.

The conventional technology can refer to the technology of parking lot management using the remote on-demand video surveillance system as described in the Republic of China Patent No. I246321 (Announcement Date: 2005/12/21), using video surveillance technology as intersection monitoring, access control, and parking lot monitoring. Etc., the main technique is to use the image capturing method to store the images of the monitoring occasions in a specific storage. When any situation arises, it can be accessed or provided for remote monitoring by webpage.

Another conventional technology, such as the Republic of China Patent No. I271667 (Announcement Date: 2007/01/21), discloses a centrally controlled unmanned parking lot management system, that is, when it is determined that the vehicle arrives, the vehicle image is captured and the license plate is identified. This comparison is whether the vehicle is allowed to enter. This system mainly uses the license plate automatic identification technology to achieve the purpose of vehicle management. According to the disclosure of the case, when the vehicle enters and exits the parking lot, the vehicle detector detects the arrival of the vehicle, and then the image is taken by the camera to perform license plate recognition. The result of the license plate recognition will be matched with the image recognition computer. The database is compared, as is Whether to open the judgment of the fence.

Conventional technology controls the entry and exit of parking lots by applying image capture and license plate recognition. The manager then controls the gate or the driver controls the gate through the handheld gate remote control. The former case is when the vehicle enters the gate. The road, after identifying the identity through the identification card, opens the gate and enters the parking lot.

Different from the technology of the prior art in the parking lot entry and exit management of the parking lot, the present invention proposes a vehicle access control system and method, wherein a camera with wide-angle photography function is adopted, and the vehicle entering the vehicle control place is photographed and remotely identified. The license plate, then sensing the gate time of the vehicle entering, can open the gate in time, so that the vehicle can smoothly enter the vehicle control place without stopping. In addition, if the vehicle cannot pass the verification after the license plate is identified, it will not be able to enter smoothly, or it can be used with other authentication methods to enter the vehicle control location.

According to an embodiment, the vehicle access control system described in the disclosure of the present invention mainly includes a photographing unit, and the photographing unit may specifically be a wide-angle camera that can cover a plurality of lanes entering the front of the gateway, or may be a plurality of image capturing units. The combined camera is intended to capture a continuous image of a range including one or more lanes. The continuous image can then be temporarily stored in the image temporary storage unit.

After obtaining the image of the lane range, the vehicle access control system can perform an image processing, and determine the license plate of each vehicle by using a license plate recognition unit for each frame in the continuous image after a scan and edge search process. Car number.

After that, the identified license plate will be verified by the vehicle entering and exiting the control system. The unit comparison list is used to verify the vehicle numbers obtained, especially if the vehicle is allowed to enter before entering the gateway. Then, after the gate control unit in the system obtains the entry permission message of the verification unit for each vehicle, the gate of the control gate is opened and closed according to the gateway that each vehicle enters. In particular, according to the vehicle control program generated by the foregoing system, one or more vehicles that have passed the verification can reach the corresponding gate and the gate is opened before the gate is allowed to pass, and the vehicle can enter without stopping, unlike the conventional technology, it is necessary to stop. The way to enter before the gate is verified.

According to an embodiment, the photographing unit may be a photographing device composed of a plurality of image capturing units, and then an image combining unit seamlessly joins the plurality of images of different viewing angles acquired by the image capturing units.

After the license plate recognition unit obtains the license plate position of each vehicle, the camera unit can be driven to continuously capture the license plate of each vehicle in the manner of tracking the license plate until the identification of the vehicle number is completed.

In addition, if the system is located in a place with multiple gateways, it will be necessary to know which gateway the vehicle enters. Therefore, the vehicle access control system can use the vehicle sensing unit provided in each gateway to sense the gateways entered by each vehicle. Confirm that the gate should be open or closed.

According to the disclosed embodiment, the vehicle access control method includes the steps of: taking a continuous image of a range of lanes including one or more entering the gateway before the photographing unit, and then judging and simultaneously identifying from the continuous image. The license plate position of each vehicle, and the identification of each license plate content, and then perform verification according to the contents of each license plate to confirm the entry permission of one or more vehicles, and after detecting the gateways entered by each vehicle, confirm the opening of the gate corresponding to the gate.

According to the foregoing steps, the verification step is that the vehicle number identification and verification has been completed before one or more vehicles reach the corresponding gate, so that the verification can be made If the passing vehicle reaches the corresponding gate, the gate is opened to allow access, so the vehicle can wait for verification without entering the vehicle to enter.

According to an embodiment, the license plate recognition method is based on the image captured by the photographing unit, and uses the method of scanning the full frame and the edge finding to obtain the license plate position according to the characteristics of the license plate (such as the obvious frame edge and the obvious letter), and continuously tracks the image. The identified license plate position of the vehicle until the license plate content is recognized.

The disclosure of the present invention describes a vehicle access control system and related method flow. The main technical feature is that the vehicle access control system is installed in a vehicle control place, such as a parking lot, a place where a gate enters or exits, or a building. Moreover, in a place where identification is required in particular, when a vehicle approaches the entrance and exit, the system proposed by the present invention is provided with a camera capable of obtaining the license plate position of the entering vehicle and discerning the license plate content (such as the car number). When entering the gateway, the verification has been completed, so the verified vehicle can be allowed to enter at an earlier time, and the system will first open the gate according to the incoming gateway (the embodiment with multiple gateways), so that the vehicle can be different Stop and you can drive straight in.

1 is a view showing a scene setting of one of the embodiments of the vehicle entry and exit control system of the present invention.

There is shown a vehicle 10, which can be various vehicles with license plate recognition. The vehicle 10 is provided with a license plate 101. The camera 103 provided by the system has a shooting range of 12 (the range covered by the dotted line in the figure) covers the lane in which the vehicle enters. The lane here is defined as the vehicle travel route before entering the gateway (the position in front of the gate), so the camera 103 can obtain the image when the vehicle is at a position other than a certain distance, and continues to be based on the characteristics of the license plate. Recognize the image of the vehicle license plate, and then obtain the license plate position and identify it. The license plate features mainly the obvious frame and the actual letters in it. These features can quickly obtain the license plate position by scanning a continuous image, and then can confirm the movement characteristics. Not a background image.

According to one of the embodiments, when the vehicle enters the gateway 105 before the gate 109, if the previous identification license plate has verified that the procedure has been completed and the vehicle is confirmed to be allowed to enter, it can be turned on before the vehicle enters the gateway 105. The gate 109 allows the vehicle to smoothly enter without a complete stop waiting for the verification result, or to stop using the conventional technology to verify the identity before the gate 109, such as an identification card commonly used in the prior art, a radio frequency identification tag (RFID).

The vehicle access control system may be provided with a vehicle sensor 14 that senses passing the vehicle on the ground of the gateway 105. In particular, in a system of multiple gateways 105 (Fig. 2), it is necessary to know through the vehicle sensor 14 that the vehicle is to enter. Which one is the gateway 105. The purpose of the vehicle sensor 14 is to sense the time when the vehicle arrives at the gateway. The manner of use includes the use of an inductive coil, a pressure sensing circuit, etc., which are disposed on the ground. In the embodiment of the present invention, the use of other sensors, such as infrared shielding, is not excluded. Break induction, radio induction, etc.

In this vehicle access control system, when a vehicle enters the lane in front of the gateway 105, since the camera 103 continues (or is activated by induction) to take a picture of the scene, it is possible to quickly grasp the entering vehicle and perform image processing. Find the license plate location and provide license plate recognition. Thereafter, the confirmed license plate number is a list that allows access to the vehicle control location, i.e., the gate driver 107 is opened at the appropriate timing, such as the fence type gate 109. This verification procedure allows the vehicle to enter the vehicle control location without stopping.

In this embodiment, since only one gateway 105 is provided, the gate 109 can be opened when the vehicle passes the verification, but the vehicle sensor 14 can still be used to confirm the timing of the vehicle entering the gate 105, and the gate is opened at the most appropriate time. 109. Embodiments of the gate 109 include a fence type of gate, which may also be a barrier, door, or other means of blocking the vehicle.

Next, the site setting diagram of the second embodiment of the vehicle entry and exit control system of the present invention is shown in FIG.

In this embodiment, the vehicle 20 is provided with the license plate 201, and also enters the shooting range 22 of the camera 203. The front and rear images captured by the processing camera 203 determine that the moving object enters the shooting range 22, and the license plate can be used to find the license plate. Position 201 and perform identification.

In this example, the vehicle control location is provided with two gateways 207, 208 and two vehicle sensors 24, 26, respectively, which are not intended to limit the implementation of the present invention. The two vehicle sensors 24, 26 are primarily intended to sense the gates 207, 208 that the vehicle 20 is to enter.

As shown in FIG. 1, when the vehicle 20 enters the shooting range 22 of the camera 203, the image processing mechanism of the system will derive the position of the license plate 201 and identify the license plate 201 number, and the vehicle 20 that has been allowed to enter enters the aforementioned vehicle perception. When the sensing range of the devices 24, 26 is reached, the incoming gateway 207 or 208 can be determined, and the gate driver 209 or 210 corresponding to the control signal control can be activated to open the gate 211 or 212.

In the foregoing described embodiments, it is known that the present invention first verifies whether the entering vehicle is allowed to enter the vehicle control location by means of image capturing, recognition, etc., and thus can be verified before the vehicle enters the gateway. After passing the verification, in addition to issuing appropriate reminders, it can be attached to the vehicle near the gateway. In the near future, the gate has been opened so that the vehicle can enter directly without stopping. In addition to simplifying the necessary authentication procedures, it is a provincial fuel-saving and time-saving method.

3 is a schematic view showing the on-site setting of the embodiment of the vehicle access control system of the present invention. This example shows an example of the vehicle 30 having the license plate 301 entering an entrance and exit. When the vehicle 30 enters, the verification procedure is performed first. The vehicle verification system 307 determines whether the vehicle 30 is allowed to enter. The result of the verification generates a signal of whether or not the gate control unit 305 that drives the control gate 310 to open and close. If verified, the generated message drives the gate control unit 305 to drive the gate driver. The gate 310 is opened 309; if it is not verified, no signal may be generated to the gate control unit 305, and other warning messages are generated.

In this example, the verified vehicle 30 will be perceived by the vehicle sensor 303, and thus a signal notification gate control unit 305 will be generated. The gate control unit 305 can also obtain a verification pass message from the vehicle verification system 307, and thus can be in the vehicle 30. When activated, the gate driver 309 is actuated to open the gate 310 and will close the gate 310 when the vehicle 30 is fully passed.

In the vehicle access control system disclosed in the embodiments of the present invention, in order to achieve the technology of the present invention, various functional modules implemented by hardware circuits or software programs are provided, and the present invention shown in FIG. 4 can be referred to. Schematic diagram of each unit of the vehicle access control system.

Figure 4 shows a vehicle access control core 40, which is a processing core of a signal, including various software and hardware solutions to execute various circuits and software signals, and various functional modules below and below the control core 40 can be respectively Display such as gate control unit 401, vehicle sensing unit 403, license plate recognition unit 405, photographing unit 407, storage unit 409, verification sheet Element 411 and vehicle assistance verification unit 413.

According to the embodiment, the photographing unit 407 is electrically connected to the vehicle entrance and exit control core 40 as a signal processing core, in particular, a camera that captures a wide viewing angle, and can shoot one or more lanes all the day or after being triggered (into the gateway) A continuous image of the front road surface, and with the image processing to obtain moving objects. The system of the present invention will perform license plate recognition through circuit design or software means, such as the illustrated license plate recognition unit 405.

The license plate recognition unit 405 can find the license plate by means of image processing according to the characteristics of the license plate, and recognize the license plate number. The license plate recognition is based on the image characteristics of the license plate, such as a virtual object frame, which is sequentially scanned from the beginning to the end of each frame. When the object frame is scanned in a specific position, it has a square shape with a prominent border and can also be matched with a solid color. The characteristics of the background color (such as white, yellow, green, etc.), as well as the obvious combination of English and numbers, can be judged as a license plate, and the position of the license plate can be obtained through the technique of edge finder. According to the identification of an object feature (such as a license plate) and the identification of the letter number of the vehicle, the conventional image recognition technology can be used, and will not be described here.

Thereafter, the verification unit 411 obtains the information of the license plate from the vehicle entrance and exit control core 40. If there is a security consideration, it will compare with the preset list to confirm whether the vehicle exists in a white list, and determine whether access is permitted. The result of the verification is then generated, and the vehicle entry and exit control core 40 will control the gate control unit 401 to activate the gate or close the gate. The vehicle access control core 40 is electrically connected to a storage unit 409, which can be used to store images of the vehicle (for later inquiry), vehicle model database, list, and the like.

If the system is installed in the multi-gate access, the vehicle sensing unit 403 can confirm that the vehicle enters the gateway, and then notify the gate control unit 401 to open the corresponding Gate. If the license plate recognition is unsuccessful, the driver can still enter the vehicle control site through another auxiliary measure of the system, such as the vehicle auxiliary verification unit 413, and the auxiliary verification technology can be like some conventional verification techniques, such as carrying the RFID tag. Card or device, etc.; or, when the vehicle fails verification, it means that the vehicle is not listed or listed in a blacklist, but the driver is still allowed to enter, this situation can still be provided by the system The second method of verification enters the vehicle control location.

It is worth mentioning that compared with other conventional systems, the general image recognition technology is slow to recognize because of the limited computing power of the system, so it cannot meet the needs of instant and fast identification, so various vehicle perceptions are needed. To assist, to reduce the burden on the system. However, the license plate recognition method adopted by the vehicle entry and exit control system of the present invention directly scans the entire image frame, and directly obtains the license plate position and recognizes the content by using the distinctive features of the license plate, without first determining that the vehicle license plate itself is finding the license plate, so A lot of calculation work is omitted in the image processing, and the general system is sufficient to process the image content of the image stream (more than 25 frames per second) according to this method. The system is always in the state of detecting the license plate. Therefore, according to the above technical features, the vehicle entry and exit control system of the present invention can handle multi-lane license plate recognition.

The camera used in the vehicle access control system of the present invention is preferably a camera having a wide viewing angle lens for the purpose of capturing a wider range, particularly for access doors having multiple gateways. For other embodiments, reference may be made to the schematic diagram of the wide-angle camera module shown in FIG.

This example shows a camera unit 50 in which a plurality of image capturing units 501, 502, 503 are provided, and circuit elements such as CCD, CMOS, etc. are captured, and even conventional analog cameras are not excluded. In this example, the plurality of image capturing units 501, 502, 503 are designed to separately capture lanes at different angles, and Moreover, the imaging range of the wider viewing angle can be obtained by the technique of image combining, and the image combining unit 51 of the photographing unit 50 is electrically connected as shown in the figure.

The image combining unit 51 of this example seamlessly combines images of a plurality of different viewing angles acquired from the photographing unit 50 through the edge of the image, and the correlation includes the synchronized image according to time and the object pixel of the image edge. Etc., therefore, can produce a wide viewing angle effect. In the embodiment of the present invention, images of a plurality of lanes can be taken.

The image processed by the image combining unit 51 is stored in the temporary storage unit 53, and the license plate recognition unit 55 is provided to perform instant license plate image recognition. After obtaining the license plate position by searching for the position, the license plate is continuously recognized by means of license plate tracking until the license plate recognition is completed. The resulting car number is then subjected to a list comparison or registration by the verification unit 57.

6 then describes the vehicle access control system of the present invention through the functional blocks of the various unit modules. The system includes a wide-angle camera module 601, a video temporary storage unit 603, a database 605, and a license plate identification that are electrically connected to each other as shown. The unit 609, the verification unit 611, the list 613, the message unit 615, the gate control unit 617, and the vehicle sensing unit 619.

The wide-angle camera module 601 is implemented as a camera with a wide-angle lens as described above, or a camera unit that captures images by a plurality of image capturing units to generate a wide viewing angle. The purpose is to capture one or more images. A continuous image of the lane range before entering the gateway, these consecutive images will be temporarily stored/stored to an image temporary storage unit 603, including to the database 605 for later retrieval.

Then, the system obtains the continuous image from the image temporary storage unit 603 by the license plate recognition unit 609 implemented by the software program or the circuit means, and performs license plate recognition. In particular, the image is frame-by-frame according to the characteristics of the license plate itself. (frame) scanning, can obtain the image of the above-mentioned frame, shape, color, English / number and other letters, identify the license plate position and the car number, such as using a technique of edge-finding processing to determine the license plate position, and then identify the car number. The list 613 is then compared with the verification unit 611 to verify whether the vehicle is a vehicle that is allowed to enter. The list 613 can be stored in the aforementioned database 605. According to one of the embodiments, after obtaining the license plate position of each vehicle, the license plate recognition unit 609 of the example can drive the wide-angle camera module 601/photographing unit to track and photograph each vehicle license plate by means of image processing until the vehicle number is identified. Completed, the purpose is to ensure that verification is completed before the vehicle enters the gate.

The system provides a message unit 615 as a report, including a reminder for successful verification or an unsuccessful warning signal, which can be sent by a signal, a sound, and various messages, and can notify relevant personnel to come to the process.

The gate control unit 617 does not receive an indication to open the gate, or the gate control unit 617 is notified to immediately close the gate when the vehicle is verified to be unsuccessful. Conversely, if the vehicle is successfully verified, the vehicle access control system will generate a control signal to the gate control unit 617 according to the message generated by the verification unit 611 to open the gate when the vehicle enters the gateway. In this example, the gateway accessory in the vehicle access control system is provided with a vehicle sensing unit 619, whereby the time when the vehicle enters the gateway can be obtained, so the gate control unit 617 can open/close the gate according to the time when the vehicle is sensed. . Especially for access gates with multiple gateways, this vehicle sensing unit 619 will be available to confirm the entry of the vehicle and the time of entry. Thereby, since the verification unit 611 has completed the vehicle number identification and verification before the one or more vehicles reach the corresponding gate, the gate control unit 617 has opened the gate before the one or more vehicles that have passed the verification reach the corresponding gate. Allow traffic, indicating that the vehicle can be obtained without having to completely stop driving Have to verify and can enter smoothly.

It can be applied to the foregoing system, and the embodiment of the present invention further discloses a vehicle access control method. As shown in the flow of FIG. 7, step S701 indicates that the vehicle will be started to enter and exit the control system.

Then, in step S703, the system first obtains a continuous image of the lane range including one or more entering the gateway through the photographing unit having the wide viewing angle function, and passes through the software or the hardware during the continuous shooting of the image. The means recognizes the license plate position and then recognizes the license plate content (step S705), wherein an image tracking means is further utilized to track the license plate and perform recognition in the continuously captured image.

In step S707, the system compares the list according to the identification result of the license plate (71) to verify whether the vehicle is a vehicle that is allowed to enter, and the step may simultaneously perform a process of image recognition, license plate tracking, and verification for the plurality of vehicles.

In step S709, after the verification succeeds, the vehicle detects that the vehicle enters the gateway and obtains the time of entering the gateway, and can drive the gate control circuit to open the gate, as in step S711; otherwise, if the verification is unsuccessful, the same can be detected. When the vehicle enters the gateway, if the gate is open at the time, the gate control circuit must be driven to close the gate and generate a warning signal (step S711).

According to the foregoing process, the embodiment of the present invention can achieve the effect that the vehicle number identification and verification has been completed before one or more vehicles reach the corresponding gate, so that one or more vehicles that have passed the verification have already opened the gate before reaching the corresponding gate. Passing means that the vehicle can enter the vehicle control location more efficiently (without stopping completely, without stopping the verification).

In the foregoing technique for license plate recognition, the prior art can be used to make a judgment for an image of a specific feature, for example, according to the image feature of the license plate, and the flow of the embodiment is as shown in FIG.

The license plate recognition process includes first obtaining a continuous image (step S801). According to one of the embodiments, the system uses a software method to virtualize an object frame and continuously scans in each frame of the image. In step S803, the system determines whether to detect through the scan result. Go to the license plate, if no, it shows that no vehicle has entered, then proceed to step S801; if so, it means that the image in the object frame has the same image as the license plate, and the position of the license plate can be determined according to the frame edge of the object, and the image can be imaged. The tracking mode locks the license plate position to continuously recognize the license plate. In step S805, the license plate is tracked until the identification of the license plate is completed.

Then, comparing the license plates, according to step S807, judging whether the vehicle is allowed to enter according to the comparison result? If no, indicating that the verification has not passed, then in step S809, the system will generate a warning message, including measures such as signal, sound or notification of specific security personnel; if yes, the vehicle is verified, such as S811, the system will confirm Open the gate.

Through the foregoing process of license plate recognition, vehicle entry verification procedure, gate control, etc., one of the advantages of the vehicle entry and exit control system and method according to the present invention is that identification and verification have been completed before the vehicle reaches the gate, so that the vehicle can be Entering on continuous driving is different from the process of performing verification after the conventional technology needs to stop, providing smooth and convenient vehicle control measures.

However, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent structural changes that are made by using the specification and the contents of the present invention are equally included in the present invention. Within the scope, it is combined with Chen Ming.

10‧‧‧ Vehicles

101‧‧‧ License Plate

12‧‧‧ Shooting range

103‧‧‧ camera

14‧‧‧Vehicle Perceptron

105‧‧‧Chute

107‧‧‧gate driver

109‧‧‧ gate

20‧‧‧ Vehicles

201‧‧‧ License Plate

22‧‧‧ Shooting range

203‧‧‧ camera

24,26‧‧‧Vehicle Perceptron

207, 208‧‧ ‧ gateway

209,210‧‧‧gate driver

211, 212‧‧ ‧ gate

30‧‧‧ Vehicles

301‧‧‧ License Plate

303‧‧‧Vehicle Perceptron

305‧‧‧gate control unit

307‧‧‧Vehicle Verification System

309‧‧‧gate driver

310‧‧ ‧ gate

40‧‧‧ Vehicle access control core

401‧‧‧gate control unit

403‧‧‧Vehicle sensing unit

405‧‧‧ License Plate Identification Unit

407‧‧‧Photographic unit

409‧‧‧ storage unit

411‧‧‧ verification unit

413‧‧‧Vehicle Auxiliary Verification Unit

50‧‧‧Photographic unit

501,502,503‧‧‧Image capture unit

51‧‧‧Image Binding Unit

53‧‧‧Scratch unit

55‧‧‧ License Plate Identification Unit

57‧‧‧Verification unit

601‧‧‧ Wide Angle Photography Module

603‧‧‧Image temporary storage unit

605‧‧‧Database

609‧‧‧ License Plate Identification Unit

611‧‧‧ verification unit

613‧‧‧ list

615‧‧‧ message unit

617‧‧‧gate control unit

619‧‧‧Vehicle sensing unit

Step S701~S711‧‧‧ Vehicle Entry and Exit Control Method Flow

Step S801~S811‧‧‧ License Plate Identification and Vehicle Control Process

1 is a view showing a scene setting of one of the embodiments of the vehicle entry and exit control system of the present invention; 2 is a site setting diagram of the second embodiment of the vehicle access control system of the present invention; FIG. 3 is a schematic view showing the site setting of the vehicle access control system of the present invention; FIG. 4 is a view showing the vehicle entry and exit control system of the present invention; FIG. 5 is a schematic diagram of a wide-angle camera module applied to the vehicle access control system of the present invention; FIG. 6 is a schematic view showing an embodiment of each unit module of the vehicle entry and exit control system of the present invention; The steps of the embodiment of the vehicle entry and exit control method of the present invention; the flow shown in FIG. 8 describes the steps of the embodiment of the license plate recognition method of the vehicle entry and exit control method of the present invention.

10‧‧‧ Vehicles

101‧‧‧ License Plate

12‧‧‧ Shooting range

103‧‧‧ camera

14‧‧‧Vehicle Perceptron

105‧‧‧Chute

107‧‧‧gate driver

109‧‧‧ gate

Claims (10)

A vehicle access control system includes: a photographing unit for photographing a continuous image including one or more lanes before entering the gateway; an image temporary storage unit electrically connected to the photographing unit for storing a continuous image captured by the photographing unit; a license plate recognition unit electrically connected to the image temporary storage unit, the stored image is obtained by the image temporary storage unit, an image processing is performed, and each frame image of the continuous image is scanned, According to the license plate feature, the position of the license plate of each vehicle is determined and the vehicle number is identified; a verification unit electrically connects the license plate recognition unit, compares a list to verify the obtained vehicle number; and a gate control The unit is electrically connected to the verification unit, and after obtaining the access permission message of each verification unit to each vehicle, the gate of the gateway is controlled to be turned on and off according to the gateway entered by each vehicle; wherein the verification unit is at the one or more The vehicle number identification and verification has been completed before the vehicle reaches the corresponding gate, and the gate control unit arrives at the one or more vehicles that have passed the verification. The gates open before the gate to allow passage. The vehicle access control system according to claim 1, wherein the photographing unit is provided with a wide-angle photographic lens having a shooting range covering a plurality of lanes before entering the gateway. The vehicle access control system according to claim 1, wherein the photographing unit is a photographing device composed of a plurality of image capturing units, and is seamlessly joined by the image combining unit by the plurality of images. Take multiple images of different perspectives taken by the unit. For example, in the vehicle access control system described in claim 2 or 3, after the license plate recognition unit obtains the license plate position of each vehicle, the photographing unit is driven to track and photograph each vehicle license plate until the vehicle number identification is completed. The vehicle access control system of claim 1, wherein the verification unit is electrically connected to a message unit to send a message according to the verification result. The vehicle access control system according to claim 5, wherein the verification unit is further electrically connected to a vehicle auxiliary verification unit, and provides a second verification when the one or more vehicles fail to pass the verification unit. the way. The vehicle access control system according to claim 1, wherein each of the gateways is provided with a vehicle sensing unit electrically connected to the gate control unit for sensing the gates entered by the vehicles, and the gate control unit is configured according to the The signal control of the vehicle sensing unit corresponds to the opening or closing of the gate. A vehicle access control method includes: obtaining a continuous image of a range of lanes before entering a gateway by a photographing unit; identifying a license plate position of each vehicle from the continuous image, and identifying each license plate content; Performing verification of the license plate content to confirm the entry permission of the one or more vehicles; and detecting the gateway to which each vehicle enters to open the gate corresponding to the gateway; wherein the verification step is performed on the one or more vehicles The vehicle number identification and verification has been completed before reaching the corresponding gate, and the one or more vehicles that have passed the verification have passed the gate before the corresponding gate is allowed to pass. The vehicle access control method according to the eighth aspect of the invention, wherein the moving object is determined based on a difference between the front and rear images captured by the photographing unit, thereby determining that one or more of the one or more lanes are entered. vehicle. The vehicle access control method according to claim 9, wherein after determining that the vehicle has entered the vehicle, the photographing unit will track the recognized license plate position of the vehicle until the license plate content is recognized.