CN203465847U - Intelligent parking lot vehicle license plate recognition system - Google Patents
Intelligent parking lot vehicle license plate recognition system Download PDFInfo
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- CN203465847U CN203465847U CN201320234936.1U CN201320234936U CN203465847U CN 203465847 U CN203465847 U CN 203465847U CN 201320234936 U CN201320234936 U CN 201320234936U CN 203465847 U CN203465847 U CN 203465847U
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Abstract
An intelligent parking lot vehicle license plate recognition system is provided. The intelligent parking lot vehicle license plate recognition system is characterized in that the intelligent parking lot vehicle license plate recognition system includes a computer system, a vehicle license plate recognition module and a parking place guidance module, wherein the vehicle license plate recognition module includes an image acquisition unit, a vehicle license plate positioning unit, a vehicle license plate correction unit, a character segmentation unit, a vehicle license plate recognition unit and a result output unit which are respectively connected with the computer system, and the parking place guidance module includes a display unit and a detection unit which are respectively connected with the computer system. With the intelligent parking lot vehicle license plate recognition system of the utility model adopted, the accuracy of parking lot vehicle license plate recognition, parking lot management efficiency and security can be improved.
Description
Technical field
The utility model belongs to electronic technology field, relates to managing system of car parking field, particularly belongs to a kind of Design and manufacture of intelligent parking lot Vehicle License Plate Recognition System.
Background technology
Science and technology constantly bringing forth new ideas, development, be also deep in the middle of daily life gradually.Just start in 19th century of intelligent transportation system concept to propose, become the development trend of world today's road traffic.In intelligent transportation system, intelligent parking lot Vehicle License Plate Recognition System is an important ring wherein.
It is basis that license plate recognition technology (License Plate Recognition, LPR) be take computer technology, image processing techniques, fuzzy diagnosis, sets up the characteristic model of vehicle, and identification vehicle characteristics, as number plate, vehicle, color etc.Intelligent parking lot Vehicle License Plate Recognition System is effectively managed entering the vehicle in parking lot by license plate recognition technology.
People propose multiple parking lot Vehicle License Plate Recognition System scheme at present, but the car plate identification in parking lot management of all schemes is not accurate enough, causes parking lot management efficiency not high and dangerous.
Summary of the invention
The purpose of this utility model is to solve above-mentioned deficiency of the prior art, and a kind of intelligent parking lot Vehicle License Plate Recognition System is provided, so that when having guaranteed vehicle safety, also improves parking lot management efficiency.
The purpose of this utility model is achieved in that a kind of intelligent parking lot Vehicle License Plate Recognition System, it is characterized in that: mainly comprise computer system, car plate identification module and parking stall bootstrap module, described car plate identification module comprises image acquisition units, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, the result output unit being connected with computer system respectively.Described parking stall bootstrap module comprises display unit, the probe unit being connected with computer system respectively.
Car plate identification module belongs to pure software recognition method, system can be according to vehicle panoramic pictures and feature picture, complete the judgement of vehicle characteristics, in conjunction with trigger mechanism, system provides the essential informations such as vehicle heading, elapsed time, place, type of vehicle, the number-plate number.
Car plate identification module technical parameter
1., car plate capture rate:
The vehicle image capture rate in guarded region, 0km/h～200km/h being travelled reaches more than 99%.
2., car plate recognition accuracy:
Daytime, car plate recognition accuracy was greater than 95%; Night, car plate recognition accuracy was more than 90% (relevant with illumination condition).
3., average non-fault continuous operating time:
MTBF >=25000 hour.
4., capture photo resolution:
768*576、704*576。
5., car plate color identification:
Gradation of image grade: 256 grades; Image color grade: 24 true color.
Described display unit comprises residue parking stall display.
Described probe unit comprises ultrasonic detector.
Take the utility model of above measure, greatly guaranteed the accuracy of parking lot car plate identification and high efficiency and the security that has improved parking lot management.
Accompanying drawing explanation
Fig. 1 is system architecture schematic diagram of the present utility model;
Fig. 2 is the workflow diagram of the utility model when being applied to parking lot vehicle and sailing into;
Fig. 3 is the workflow diagram of the utility model when being applied to parking lot vehicle and rolling away from.
In conjunction with the accompanying drawings and embodiments the utility model is described in further detail again below.
Embodiment
Fig. 1 has provided system architecture schematic diagram of the present utility model.The utility model mainly comprises computer system and car plate identification module, and described car plate identification module comprises image acquisition units, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, the result output unit being connected with computer system respectively.Described parking stall bootstrap module comprises display unit, the probe unit being connected with computer system respectively.The parking stall bootstrap module in car plate identification module of the present utility model and parking lot is unified control and management by an intelligent parking lot car plate identification software.
Described display unit comprises residue parking stall display.
Described probe unit comprises ultrasonic detector.
The following describes concrete structure and the application of the utility model embodiment.
The computer system of embodiment adopts industrial computer, thinks that reason configuration is as follows:
Microprocessor: be not less than intel pentium 2.0GHZ
Front end system bus: be not less than the outer frequency of 1GHz
Board chip set: be not less than INTEL 865 chipsets
Internal memory: be not less than 512MB DDR400
Video memory: be not less than 64MB
Hard disk: be not less than 120GB
Car plate identification module belongs to pure software recognition method, system can be according to vehicle panoramic pictures and feature picture, complete the judgement of vehicle characteristics, in conjunction with trigger mechanism, system provides the essential informations such as vehicle heading, elapsed time, place, type of vehicle, the number-plate number.
Car plate identification module technical parameter
1., car plate capture rate:
The vehicle image capture rate in guarded region, 0km/h～200km/h being travelled reaches more than 99%.
2., car plate recognition accuracy:
Daytime, car plate recognition accuracy was greater than 95%; Night, car plate recognition accuracy was more than 90% (relevant with illumination condition).
3., average non-fault continuous operating time:
MTBF >=25000 hour.
4., capture photo resolution:
768*576、704*576。
5., car plate color identification:
Gradation of image grade: 256 grades; Image color grade: 24 true color.
The LKD850LED display screen that the residue parking stall display screen of embodiment adopts Lian Kaida to produce.
The parking stall sniffer of embodiment adopts Ai Dapu parking space detector, adopts ultrasonic listening mode detection vehicle.
Fig. 2 is the workflow diagram of the utility model when being applied to parking lot vehicle and sailing into.
Fig. 3 is the workflow diagram of the utility model when being applied to parking lot vehicle and rolling away from.
Embodiment is work like this: when vehicle sails parking lot into, be triggered to wagon detector, Vehicle License Plate Recognition System starts, system is carried out image acquisition to vehicle, obtain the laggard driving board of vehicle image location, provide the position of car plate in image or provide several possible car plate positions, then carry out car plate rectification and Character segmentation, character in license plate area behind location is split one by one, judge that the line tilt of going forward side by side of car plate form corrects, then by the character recognition cutting out out, last Output rusults.
Obtain after license plate number, vehicle judged:
If vehicle is interim car, system will record license plate number, and when this interim car rolls parking lot away from, system is captured the license plate number of this car automatically, then compare with this car license plate number being kept in management computer, if license plate number coupling is let pass; If license plate number is not mated, forbid that this car rolls away from and this car is verified.
If vehicle license plate number is recorded in management computer, when vehicle carries out license plate number identification automatically to porch system, if mated, system is let pass automatically.
Vehicle enters behind parking lot, and system is sent to residue parking stall display screen by parking stall residue situation, and guides the vehicle to idle parking stall.Guidance system adopts ultrasonic detector to survey the parking position situation of parking, and take RS485 bus as communication mode, forms and from multistage network, parking lot detector is controlled.Send sensor parking stall transmitting downwards ultrasound wave, in transmitting sound wave, start timing, ultrasound wave is propagated in air, in way, running into barrier just returns immediately, accept sensor and receive that reflection wave just stops timing immediately, with this, come detecting ultrasonic wave detector below whether to stop to have vehicle, real-time statistics also shows residue parking stall, parking lot and data is returned to computer system.
Intelligent parking lot car plate identification software carries out unified management to native system.The data such as database autostore vehicle image, the number-plate number, access time and position, storing cycle parking stall, each record is all corresponding with this car image and car plate.Software provides complete form, can add up or print all vehicle data forms.Increase car plate preset function, can pre-enter the specific number-plate number, this car can freely enter parking lot.
Claims (2)
1. an intelligent parking lot Vehicle License Plate Recognition System, it is characterized in that: mainly comprise computer system, car plate identification module and parking stall bootstrap module, described car plate identification module comprises image acquisition units, car plate positioning unit, car plate correcting unit, Character segmentation unit, car plate recognition unit, the result output unit being connected with computer system respectively, and described parking stall bootstrap module comprises display unit, the probe unit being connected with computer system respectively.
2.. according to the above intelligent parking lot Vehicle License Plate Recognition System of claim, it is characterized in that: described probe unit comprises ultrasonic detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320234936.1U CN203465847U (en) | 2013-05-03 | 2013-05-03 | Intelligent parking lot vehicle license plate recognition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320234936.1U CN203465847U (en) | 2013-05-03 | 2013-05-03 | Intelligent parking lot vehicle license plate recognition system |
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| Publication Number | Publication Date |
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| CN203465847U true CN203465847U (en) | 2014-03-05 |
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| CN201320234936.1U Expired - Fee Related CN203465847U (en) | 2013-05-03 | 2013-05-03 | Intelligent parking lot vehicle license plate recognition system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206022A (en) * | 2016-06-28 | 2016-12-07 | 肖锐 | One realizes self energizing high efficiency parking lot Car license recognition equipment |
| CN110439346A (en) * | 2019-07-04 | 2019-11-12 | 佛山科学技术学院 | A kind of intelligent parking method and device based on Internet of Things |
-
2013
- 2013-05-03 CN CN201320234936.1U patent/CN203465847U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106206022A (en) * | 2016-06-28 | 2016-12-07 | 肖锐 | One realizes self energizing high efficiency parking lot Car license recognition equipment |
| CN106206022B (en) * | 2016-06-28 | 2018-06-29 | 谢碧珍 | A kind of realization efficient parking lot car license recognition equipment of self energizing |
| CN110439346A (en) * | 2019-07-04 | 2019-11-12 | 佛山科学技术学院 | A kind of intelligent parking method and device based on Internet of Things |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: The 538000 the Guangxi Zhuang Autonomous Region Fangchenggang Port District Peach Bay Plaza Bauhinia District No. A3 Patentee after: Fangchenggang Sichuang Information Technology Co., Ltd. Address before: 536000 Building 1, South Asia building, Haicheng District, the Guangxi Zhuang Autonomous Region, Beihai 2210 Patentee before: Fangchenggang Sichuang Information Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140305 Termination date: 20150503 |
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| EXPY | Termination of patent right or utility model |