CN115830726A - Open type parking lot automatic fee deduction system and method based on ETC and license plate recognition - Google Patents
Open type parking lot automatic fee deduction system and method based on ETC and license plate recognition Download PDFInfo
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Abstract
The invention relates to an open type parking lot automatic fee deduction method based on ETC and license plate recognition, which comprises the steps of when vehicles are detected at an entrance and an exit of a parking lot, on one hand, obtaining vehicle information through an ETC read-write antenna, on the other hand, shooting a target vehicle through a camera and recognizing the vehicle license plate information, finally, determining a final license plate number through comparison of the measurement information and the vehicle license plate information recognized by the camera, judging whether the vehicle is an entrance vehicle or an exit vehicle based on the information and stored in a database, recording the entrance vehicle, and settling the fee of the exit vehicle. The method can be well suitable for opening parking lots, on one hand, intelligent fare settlement can be carried out, and on the other hand, unsuccessful fee deduction under the condition of poor license plate recognition result in severe weather can be greatly avoided by combining the flexible application of ETC with the license plate image recognition technology.
Description
Technical Field
The invention relates to the technical field of ETC (electronic toll collection), in particular to an open parking lot automatic fee deduction system and method based on ETC and license plate recognition.
Background
With the continuous improvement of living standard, more and more people own their own car. In order to solve the problem of difficult parking, urban parking lots are also diversified, and the traditional basement closed parking lots are developed into regional open-air parking lots, so that certain difficulty is brought to a charging mode.
The existing parking lot charging modes mainly include the following modes:
1. the method comprises the steps of manual attendance, manual license plate recording and manual departure timing and cash charging. The corresponding disadvantages are: the labor cost is high, and the efficiency is low.
2. And the code is scanned and paid by the owner actively when the vehicle leaves the field. The corresponding disadvantages are: bringing great inconvenience to the car owners.
3. The system automatically identifies the license plate when the vehicle leaves the field and automatically deducts fees at the background without being attended. The corresponding disadvantages are: (1) The owner of the vehicle is required to register and recharge on the platform, the owner of the vehicle coming from the outside is not convenient, and fee evasion behavior can occur if the owner of the vehicle does not register or recharge in advance; (2) The license plate recognition camera is influenced by weather light and the like, and the fee deduction is possibly unsuccessful when the weather light is poor.
Disclosure of Invention
The invention aims to at least solve one of the defects of the prior art and provides an open type parking lot automatic fee deduction system and method based on ETC and license plate recognition.
In order to achieve the purpose, the invention adopts the following technical scheme:
specifically, an open parking lot automatic fee deduction method based on ETC and license plate recognition is provided, and the method comprises the following steps:
when an ETC read-write antenna of a parking lot senses a target vehicle, a cloud server reads an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
meanwhile, the cloud server controls a vehicle identification camera to photograph the target vehicle to obtain a first picture, and image identification is carried out according to the first picture to obtain second license plate information;
the cloud server matches the first license plate information with the second license plate information according to a preset rule,
the cloud server determines the final license plate information of the target vehicle according to the matching result, traverses a temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored or not,
if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an entering vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and if the license plate number identical to the final license plate information exists, judging that the target vehicle is an out-of-range vehicle, calculating parking fee and deducting fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is completed.
Further, specifically, the process of calculating the parking fee includes the following,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
Further, the deduction method specifically comprises the following steps,
the ETC read-write antenna writes fee deduction information into an electronic tag OBU in the target vehicle and returns fee deduction information results to the cloud server.
Further, specifically, the matching of the first license plate information and the second license plate information by the cloud server according to a preset rule includes the following steps,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
Further, it is preferable that, in particular,
and carrying out image recognition on the first picture in a deep learning mode to obtain second license plate information.
The invention also provides an open type parking lot automatic fee deduction system based on ETC and license plate recognition, which comprises the following steps:
the ETC read-write antenna is used for carrying out information interaction with an electronic tag OBU arranged in a user target vehicle based on DSRC communication;
the license plate recognition camera is used for photographing the target vehicle to acquire a first picture;
the control communication box is electrically connected with the ETC read-write antenna and the license plate recognition camera and is used for acquiring related data information of the ETC read-write antenna and the license plate recognition camera;
a cloud server, communicatively connected to the control communication box, for,
when an ETC read-write antenna of a parking lot senses a target vehicle, reading an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
meanwhile, controlling a vehicle identification camera to photograph the target vehicle to obtain a first picture, and carrying out image identification according to the first picture to obtain second license plate information;
matching the first license plate information with the second license plate information according to a preset rule,
determining the final license plate information of the target vehicle according to the matching result, traversing a temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored or not,
if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an entering vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and if the license plate number identical to the final license plate information exists, judging that the target vehicle is an out-of-range vehicle, calculating parking fee and deducting fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is completed.
Further, specifically, the process of calculating the parking fee includes the following,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
Further, the deduction method specifically comprises the following steps,
the ETC read-write antenna writes fee deduction information into an electronic tag OBU in the target vehicle and returns fee deduction information results to the cloud server.
Further, specifically, the matching of the first license plate information and the second license plate information by the cloud server according to a preset rule includes the following steps,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
Further, specifically, the ETC read-write antenna adopts a 5.8get read-write antenna.
The invention has the beneficial effects that:
when vehicles are detected at the entrance and exit of the parking lot, the ETC read-write antenna is used for acquiring vehicle information, the camera is used for shooting a target vehicle and recognizing the vehicle license plate information, the final license plate number is determined by comparing the vehicle information with the vehicle license plate information recognized by the camera, whether the vehicle is an entrance vehicle or an exit vehicle is judged based on the information and the information stored in the database, the entrance vehicle is recorded, and the exit vehicle is subjected to fee settlement. The method can be well suitable for the open parking lot, on one hand, intelligent fare settlement can be carried out, and on the other hand, the failure of fee deduction under the condition of poor license plate recognition result in severe weather can be greatly avoided by combining the flexible application of the ETC with the license plate image recognition technology.
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The foregoing and other features of the present disclosure will become more apparent from the detailed description of the embodiments shown in conjunction with the drawings in which like reference characters designate the same or similar elements throughout the several views, and it is apparent that the drawings in the following description are merely some examples of the present disclosure and that other drawings may be derived therefrom by those skilled in the art without the benefit of any inventive faculty, and in which:
fig. 1 is a flowchart illustrating an open parking lot automatic fare deduction method based on ETC and license plate recognition according to the present invention.
Detailed Description
The conception, the specific structure and the technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The same reference numbers will be used throughout the drawings to refer to the same or like parts.
Referring to fig. 1, in embodiment 1, the invention provides an open parking lot automatic fee deduction method based on ETC and license plate recognition, including the following steps:
step 110, when an ETC read-write antenna of a parking lot senses a target vehicle, a cloud server reads an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
step 120, at the same time, the cloud server controls the vehicle identification camera to photograph the target vehicle to obtain a first picture, and image identification is carried out according to the first picture to obtain second license plate information;
step 130, the cloud server matches the first license plate information with the second license plate information according to a preset rule,
step 140, the cloud server determines the final license plate information of the target vehicle according to the matching result, traverses the temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored,
step 1410, if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an incoming vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and 1420, if the license plate number identical to the final license plate information exists, judging that the target vehicle is an off-site vehicle, calculating parking fee and deducting the fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is finished.
As a preferred embodiment of the present invention, specifically, the process of calculating the parking fee includes the following,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
Specifically, the fee deduction method includes the following steps,
the ETC reading and writing antenna writes fee deduction information into an electronic tag OBU in the target vehicle, and returns a fee deduction information result to the cloud server.
As a preferred embodiment of the present invention, in particular, the matching of the first license plate information and the second license plate information by the cloud server according to a preset rule includes the following steps,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
The inherent property of the license plate and the characteristics of the license plate when the image recognition is carried out are considered, the first bit of the first two bits of the license plate represents the province of the license plate, the second bit represents the ground of the license plate, the recognition rate of the two bits is very high, the two bits are defined as a key field, the last 5 bits are defined as a random field, the final license plate is determined based on the two fields, and the condition that the image recognition of the license plate in severe weather is unsuccessful can be avoided to the greatest extent.
As a preferred embodiment of the present invention, specifically,
and carrying out image recognition on the first picture in a deep learning mode to obtain second license plate information.
The invention also provides an open type parking lot automatic fee deduction system based on ETC and license plate recognition, which comprises the following steps:
the ETC read-write antenna is used for carrying out information interaction with an electronic tag OBU arranged in a user target vehicle based on DSRC communication;
the license plate recognition camera is used for photographing the target vehicle to acquire a first picture;
the control communication box is electrically connected with the ETC read-write antenna and the license plate recognition camera and is used for acquiring related data information of the ETC read-write antenna and the license plate recognition camera;
a cloud server, communicatively connected to the control communication box, for,
when an ETC read-write antenna of a parking lot senses a target vehicle, reading an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
meanwhile, controlling a vehicle identification camera to photograph the target vehicle to obtain a first picture, and carrying out image identification according to the first picture to obtain second license plate information;
matching the first license plate information with the second license plate information according to a preset rule,
determining the final license plate information of the target vehicle according to the matching result, traversing a temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored or not,
if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an entering vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and if the license plate number identical to the final license plate information exists, judging that the target vehicle is an out-of-the-field vehicle, calculating parking fee and deducting the fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is completed.
In particular, in the application of the embodiment 2,
the system operation flow when the vehicle enters the field is as follows:
1. when a vehicle enters a field, the 5.8G ETC read-write antenna is automatically triggered to read vehicle information of an in-vehicle electronic tag OBU, and the read license plate number is sent to the control communication box. Meanwhile, the camera is triggered to detect the license plate, and the identified license plate number is sent to the control communication box.
2. After the license plate number of an ETC read-write antenna or a camera is received by a program for controlling the communication box each time, the license plate number is respectively added into an antenna license plate number list or a license plate number list identified by the camera, then two-two comparison is carried out on two lists, the consistent license plate number is found out, after the consistency is found, the license plate number and the current timestamp are sent to a cloud server program, and the license plate number is deleted from the two lists. And traversing and pairwise comparing the two lists every 3 seconds to find out a consistent license plate number, sending the license plate number and the current timestamp to a cloud server program if the license plate number and the current timestamp are consistent, and otherwise emptying the two lists.
3. And after receiving the license plate number and the current timestamp, the cloud server program detects whether the license plate number exists in the license plate number list, if the license plate number does not exist, the cloud server program marks the vehicle as an entrance vehicle, and records the timestamp. If the existing license plate number is found, the timestamp recorded before reading is measured and compared with the timestamp transmitted immediately. And if the time interval is less than 3 seconds, the uploading operation is regarded as being repeated, and the uploading record is abandoned.
The system operation flow when the vehicle leaves the field is as follows:
1. when a vehicle enters a field, the 5.8G ETC read-write antenna is automatically triggered to read vehicle information of an in-vehicle electronic tag OBU, and the read license plate number is sent to the control communication box. Meanwhile, the camera is triggered to detect the license plate, and the identified license plate number is sent to the control communication box.
2. After the control communication box program receives the license plate numbers of the ETC read-write antenna or the camera each time, the license plate numbers are respectively added into an antenna license plate number list or a license plate number list identified by the camera, then two lists are traversed and compared in pairs, the consistent license plate numbers are found out, after the consistency is found, the license plate numbers and the current time stamps are sent to the cloud server program, and the license plate numbers are deleted from the two lists. And traversing and comparing every two lists every three seconds to find out the consistent license plate number, sending the license plate number and the current timestamp to a cloud server program if the license plate number and the current timestamp are consistent, and emptying the two lists if the license plate number and the current timestamp are not consistent.
3. And after receiving the license plate number and the current timestamp, the cloud server program detects whether the license plate number exists in the license plate number list, if the license plate number exists, the timestamp recorded before the recording is measured and read to be compared with the timestamp transmitted immediately, a command of the amount to be charged is calculated according to the parking lot charging standard (if the time is too short and the user does not generate the command for monthly insurance), and the command is issued to the antenna control communication box program.
4. And after the antenna control communication box program receives the fee deduction command under the platform, the antenna is controlled to write fee deduction information into an in-vehicle electronic tag OBU, and a fee deduction information result is returned to the cloud server program.
5. And the result of the deduction information is written into the database by the cloud server program.
As a preferred embodiment of the present invention, specifically, the process of calculating the parking fee includes the following,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
Specifically, the fee deduction method includes the following steps,
the ETC reading and writing antenna writes fee deduction information into an electronic tag OBU in the target vehicle, and returns a fee deduction information result to the cloud server.
As a preferred embodiment of the present invention, in particular, the matching of the first license plate information and the second license plate information by the cloud server according to a preset rule includes the following steps,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
Specifically, as a preferred embodiment of the present invention, the ETC read-write antenna is a 5.8GETC read-write antenna.
In the preferred embodiment, in consideration of the applicability, a 5.8G ETC read-write wire and an in-vehicle electronic tag OBU are adopted, according to part 3 of the short-range communication dedicated for electronic toll collection in GB/T20851.3-2019: and the application layer standard carries out interaction of the data application layer to finish the functions of reading the vehicle information and deducting the ETC.
The modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing module, or each of the modules may exist alone physically, or two or more modules are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may also be implemented by a computer program, which may be stored in a computer-readable storage medium and can implement the steps of the above-described method embodiments when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, read-Only Memory (ROM), random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium includes content that can be suitably increased or decreased according to the requirements of legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunication signals according to legislation and patent practice.
While the present invention has been described in considerable detail and with particular reference to a few illustrative embodiments thereof, it is not intended to be limited to any such details or embodiments or any particular embodiments, but it is to be construed as effectively covering the intended scope of the invention by providing a broad, potential interpretation of such claims in view of the prior art with reference to the appended claims. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalent modifications thereto.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the present invention shall fall within the protection scope of the present invention as long as the technical effects of the present invention are achieved by the same means. The technical solution and/or the embodiments thereof may be variously modified and varied within the scope of the present invention.
Claims (10)
1. ETC and license plate recognition-based open type parking lot automatic fee deduction method is characterized by comprising the following steps:
when an ETC read-write antenna of a parking lot senses a target vehicle, a cloud server reads an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
meanwhile, the cloud server controls the vehicle identification camera to photograph the target vehicle to obtain a first picture, and image identification is carried out according to the first picture to obtain second license plate information;
the cloud server matches the first license plate information with the second license plate information according to a preset rule,
the cloud server determines the final license plate information of the target vehicle according to the matching result, traverses a temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored or not,
if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an entering vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and if the license plate number identical to the final license plate information exists, judging that the target vehicle is an out-of-range vehicle, calculating parking fee and deducting fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is completed.
2. The ETC and license plate recognition-based open parking lot automatic fee deduction method according to claim 1, wherein the specific process of calculating the parking fee comprises the following steps,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
3. The ETC and license plate recognition-based open parking lot automatic fee deduction method according to claim 2, wherein the fee deduction method specifically comprises the following steps,
the ETC read-write antenna writes fee deduction information into an electronic tag OBU in the target vehicle and returns fee deduction information results to the cloud server.
4. The ETC and license plate recognition-based open parking lot automatic fee deduction method according to claim 1, wherein specifically, the cloud server matches the first license plate information and the second license plate information according to a preset rule, and comprises the following steps,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
5. The ETC and license plate recognition-based open parking lot automatic fee deduction method according to claim 1, wherein specifically,
and carrying out image recognition on the first picture in a deep learning mode to obtain second license plate information.
6. Open parking area automatic fee deduction system based on ETC and license plate discernment, its characterized in that includes following:
the ETC read-write antenna is used for carrying out information interaction with an electronic tag OBU arranged in a user target vehicle based on DSRC communication;
the license plate recognition camera is used for photographing the target vehicle to acquire a first picture;
the control communication box is electrically connected with the ETC read-write antenna and the license plate recognition camera and is used for acquiring related data information of the ETC read-write antenna and the license plate recognition camera;
a cloud server, communicatively connected to the control communication box, for,
when an ETC read-write antenna of a parking lot senses a target vehicle, reading an electronic tag OBU in the target vehicle to acquire first license plate information of the target vehicle;
meanwhile, controlling a vehicle identification camera to photograph the target vehicle to obtain a first picture, and carrying out image identification according to the first picture to obtain second license plate information;
matching the first license plate information with the second license plate information according to a preset rule,
determining the final license plate information of the target vehicle according to the matching result, traversing a temporary database corresponding to the parking lot to find whether the license plate number identical to the final license plate information is stored or not,
if the license plate number identical to the final license plate information does not exist, judging that the target vehicle is an entering vehicle, storing the final license plate information and the current timestamp into the temporary database together,
and if the license plate number identical to the final license plate information exists, judging that the target vehicle is an out-of-range vehicle, calculating parking fee and deducting fee, and deleting the related records of the final license plate information in the temporary database when the fee deduction is completed.
7. The ETC and license plate recognition based open parking lot automatic fare deduction system according to claim 6, wherein the specific process of calculating parking fare comprises the following,
and the cloud server reads the entrance time associated with the final license plate information in the temporary database, calculates the difference between the entrance time and the current time, calculates the charge based on the charging standard of the current parking lot, and deducts the charge based on the result of the charge calculation.
8. The ETC and license plate recognition-based open parking lot automatic fee deduction system according to claim 7, wherein the fee deduction manner specifically comprises the following,
the ETC read-write antenna writes fee deduction information into an electronic tag OBU in the target vehicle and returns fee deduction information results to the cloud server.
9. The ETC and license plate recognition-based open parking lot automatic fare deduction system according to claim 6, wherein the cloud server matches the first license plate information and the second license plate information according to a preset rule, comprising the following,
dividing the first license plate information and the second license plate information according to the number of the fields of the license plate, defining the front 2 fields as key fields and the rear 5 fields as random fields, matching each field, judging that the matching is successful if the key fields are successfully matched and at least 4 fields of the random fields are successfully matched, taking the first license plate information as the final license plate information and judging that the matching is unsuccessful in other conditions, giving an alarm and feeding the alarm back to an IP (Internet protocol) of an administrator, and finally judging that the final license plate information is determined by the administrator.
10. The open parking lot automatic fare collection system based on ETC and license plate recognition as claimed in claim 6, is characterized in that, specifically, the ETC read-write antenna adopts a 5.8GETC read-write antenna.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117496607A (en) * | 2023-11-07 | 2024-02-02 | 武汉无线飞翔科技有限公司 | ETC (electronic toll collection) -based intelligent parking lot management method and system |
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| CN105976302A (en) * | 2016-05-05 | 2016-09-28 | 北京思特奇信息技术股份有限公司 | Configurable data comparing method and system |
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| CN208126449U (en) * | 2018-01-30 | 2018-11-20 | 广州恩凯电子科技有限公司 | A kind of non-contact parking lot message accounting |
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| CN117496607A (en) * | 2023-11-07 | 2024-02-02 | 武汉无线飞翔科技有限公司 | ETC (electronic toll collection) -based intelligent parking lot management method and system |
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