CN202306822U - Portable license plate information quick identification device based on digital signal processor (DSP) - Google Patents
Portable license plate information quick identification device based on digital signal processor (DSP) Download PDFInfo
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- CN202306822U CN202306822U CN2011204167405U CN201120416740U CN202306822U CN 202306822 U CN202306822 U CN 202306822U CN 2011204167405 U CN2011204167405 U CN 2011204167405U CN 201120416740 U CN201120416740 U CN 201120416740U CN 202306822 U CN202306822 U CN 202306822U
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Abstract
The utility model discloses a portable license plate information quick identification device based on a digital signal processor (DSP), which comprises a casing, wherein an image collecting module, an image processing module, a programmable logic device, a communication module and a liquid crystal display module are installed in the casing. The image collecting module consists of a sensor and an image decoder, the sensor is connection with the image processing module through the image decoder, and the image processing module is further connected with the programmable logic device and the communication module. The programmable logic device is connected with the liquid crystal display module, and the communication module is interacted with a traffic monitoring center. The portable license plate information quick identification device based on the DSP is suitable for file management of city motor vehicles and special traffic management, can effectively enlarge traffic flows, and strengthens the security, such as helping the traffic department to automatically catch numbers of the license plate vibrating regulations and rules and automatically catch information of vehicles vibrating regulations and rules, helping the public security department to detect vehicles at large and search vehicles of criminals, and automatically inspecting wanted vehicles, deck vehicles and stolen vehicles.
Description
Technical field
The utility model relates to the license plate recognition technology device in a kind of urban transportation vehicle management field, specifically is a kind of portable car plate information quick identification device based on DSP.
Background technology
Along with Chinese economic development, motor vehicles are increasing, and the urban transportation management of vehicles is seemed to become more and more important.Management in the past adopts the people to accomplish mostly, and this has not only expended the great amount of manpower resource, some artificial mismanagements in management, occur simultaneously and has aggravated the development requirement of Intelligent traffic management systems.Vehicle License Plate Recognition System is a good solution in this regard.In the Vehicle License Plate Recognition System of having developed, be to adopt video camera mostly as front-end collection, industrial computer is as the framework of background process.Exist a lot of insoluble problems like this, as it is high excessively that complicacy, erected cost be installed.Therefore, the portable car plate information quick identification device based on DSP has the very big practicality and the market competitiveness.
Summary of the invention
The purpose of the utility model is; Provide a cover can discern the mancarried device of license board information real-time; It is to catch license plate image and be transferred to it among the image recognition algorithm processor DSP through ccd image sensor; Steps such as the accurate location of process car plate, filtering and noise reduction processing, Character segmentation, character recognition generate recognition result; Ethernet interface through embedded system after recognition result is sent by DSP utilizes network that identifying information is transferred to control terminal, again by control terminal on the LCD of the information transmission auto levelizer of vehicle.Therefore, the utility model understands the management of convenient urban motor vehicle based on the portable car plate information quick identification device of DSP.
In order to realize above-mentioned task, the utility model is taked following technical solution:
A kind of portable car plate information quick identification device based on DSP; Comprise housing; It is characterized in that; Image capture module, image processing module, PLD, communication module and LCD MODULE are installed in housing, and described image capture module is made up of sensor and image decoder; Sensor is connected with image processing module through image decoder, and image processing module also is connected with PLD and communication module, and wherein, PLD is connected with LCD MODULE, and communication module and traffic surveillance and control center are mutual.
Other characteristics of the utility model are:
Described sensor model number is 1/4 " the special-purpose CCD module of SONY machine vision.
The model of described image decoder is TVP5145.
Described LCD MODULE model is FYD12864-0402B.
Described image processing module is selected image digital signal processor TMS320DM642 for use.
Also be connected with storer on the described image processing module.
The portable car plate information quick identification device based on DSP of the utility model; Integrated use embedded type C CD image sensing acquisition technique, embedded high-speed DSP image processing techniques, atural object shape edges detection technique and the mode identification technology in computer graphics, information engineering, Vehicle Engineering, the computer vision technique; Through scanning, can obtain the relevant information of vehicle to car plate.Go for the file management work of urban motor vehicle, special traffic administration work; Can improve the magnitude of traffic flow effectively; The security work that tightens security is caught the number-plate number violating the regulations as helping traffic control department to pounce on automatically, pounces on the vehicles peccancy information of catching automatically; Help public security department to detect fugitive vehicle, searching criminal automobile, solve the automatic inspection problem of ordering to arrest vehicle, fake-licensed car and stolen vehicle.
Description of drawings
Fig. 1 is the hardware configuration synoptic diagram of the utility model.
Fig. 2 is the car plate identification process figure of the utility model.
Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify.
Embodiment
Referring to Fig. 1; Present embodiment provides a kind of hardware configuration of the portable car plate information quick identification device based on DSP; Comprise housing; Image capture module, image processing module, PLD, communication module and LCD MODULE are installed in housing, and described image capture module is made up of sensor and image decoder; Sensor is connected with image processing module through image decoder, and image processing module also is connected with PLD and communication module, and wherein, PLD is connected with LCD MODULE, and communication module and traffic surveillance and control center are mutual.
In the present embodiment, the model of image decoder is selected TVP5145 for use, and image processing module is selected image digital signal processor TMS320DM642 for use.
Sensor in the image capture module adopts 1/4 " the special-purpose CCD module of SONY machine vision; be a kind of integrated microminiature ccd image sensor; this ccd image sensor scan mode is a pal mode; image pixel reaches 300,000 pixels (500 * 582), and horizontal definition is 420TVL (tv line), through the CCS software development environment this ccd image sensor is carried out initial configuration; ccd image sensor is taken license plate image at short notice, then through TVP5145 picture decoding chip image signal transmission in image digital signal processor TMS320DM642.
Car plate identification mainly comprises gray processing, grey level stretching, rim detection, binaryzation, medium filtering, and through after the pre-service, license plate area and background separation are come out, so that according to the feature location of vehicle.Then from license plate image, extract license plate area; Then this part license plate area is carried out Character segmentation; Isolate characters on license plate, then adopt related algorithms such as template matches, neural network to carry out character recognition, will obtain the number-plate number information of this car plate representative.
The car plate identification module generally can be divided into three parts to algorithm: car plate location extraction, Character segmentation and character recognition.Promptly from license plate image, extract license plate area, then this part license plate area is carried out Character segmentation, isolate characters on license plate, then adopt related algorithms such as template matches, neural network to carry out character recognition, obtain the number-plate number of this car plate representative.
The effect of communication module is after image digital signal processor TMS320DM642 obtains the number-plate number through character recognition; Ethernet interface through DSP; Because the Ethernet medium access controller provides the valid interface between a DM642DSP processor cores and the network; After image digital signal processor TMS320DM642 obtains the number-plate number through character recognition; Can be through the Ethernet interface of DSP, to command centre's (control terminal), command centre can search the relevant information (comprise whether be theft vehicle, fake-licensed car etc.) of this vehicle automatically according to the license board information that provides this information transmission;, and turn back to this information on the LCD liquid crystal display through Ethernet.
Information display module adopts the lattice type LCD LCD MODULE.Model is FYD12864-0402B, and it is a kind of have 4/8 bit parallels, 2 lines or 3 line serial multiple interfaces modes, and display resolution is 128*64, and the matrix magazine of built-in standard adopts serial interface mode that it is visited, and is the SPI standard protocol interface.
The portable car plate information quick identification device based on DSP of the utility model; Be embedded type C CD (the Charge Coupled Device in integrated use computer graphics, information engineering, traffic engineering, the computer vision technique; CCD) image sensing acquisition technique, embedded high-speed DSP (digital signal Processor; Digital signal microprocessor) image processing techniques, atural object shape edges detection technique, mode identification technology and ethernet technology; Through scanning, can obtain the relevant information of vehicle to car plate.This device goes for the file management work of urban motor vehicle, special traffic administration work; Can improve the magnitude of traffic flow effectively; The security work that tightens security is caught the number-plate number violating the regulations automatically as helping traffic control department, catches vehicles peccancy information automatically; Help public security department to detect fugitive vehicle, searching criminal automobile, solve the automatic inspection problem of ordering to arrest vehicle, fake-licensed car and stolen vehicle.
With reference to Fig. 2, the car plate identification module of the device of the utility model mainly is made up of car plate location extraction, Character segmentation and character recognition three parts.Promptly from license plate image, extract license plate area, then this part license plate area is carried out Character segmentation, isolate characters on license plate, then adopt related algorithms such as template matches, neural network to carry out character recognition, obtain the number-plate number of this car plate representative.
The portable car plate information quick identification device based on DSP of the utility model; The course of work is following: at the beginning, the portable car plate information quick identification device based on DSP of the hand-held the utility model of managerial personnel scans car plate, and ccd image sensor is taken license plate image at short notice; Then through TVP5145 picture decoding chip image signal transmission in image-signal processor TMS320DM642; Image is carried out pre-service, mainly comprise gray processing, grey level stretching, rim detection, binaryzation, medium filtering etc., through after the pre-service; License plate area and background separation are come out, so that the feature location of car plate.After the car plate location, need be with one by one separated of the character of license plate image, this device mainly uses the outline projection method and combines the fixed position of characters on license plate sequence to concern to be accomplished.Then, system uses neural network as sorter, with the input of character feature as neural network, trains corresponding weight matrix, realizes the classification of character, exports the classification of Chinese character, digital alphabet and digital network as recognition result at last.The result of this character recognition can utilize the Ethernet interface of TMS320DM642 to be transferred to control terminal; Control terminal is searched for the relevant information of this car automatically; And be transferred on the LCD display module of apparatus of the present invention through Ethernet, be convenient to the judgement of managerial personnel to vehicle, such as; Help public security department to detect fugitive vehicle, searching criminal automobile, solve the automatic inspection problem of ordering to arrest vehicle, fake-licensed car and stolen vehicle etc.
The portable car plate information quick identification device based on DSP of present embodiment preparation can the manual scanning license plate number, can obtain the relevant information of this car.Its advantage mainly comprises the following aspects:
(1) adopts embedded data IMAQ and treatment technology, can improve the cost performance and the reliability of license board information quick identification device greatly, help applying of achievement in research.
(2) little, in light weight, low in energy consumption, the working stability of volume, be easy to carry.Compare with traditional video camera+industrial computer pattern, based on the portable license board information recognition device of DSP from install, control, still the cost aspect all has more advantage.
(3) combine ethernet technology, the receiving terminal can be transferred to the license board information that inquires on the LCD liquid crystal display of contrive equipment fast fast, is convenient to the safety management of vehicle.
Claims (6)
1. portable car plate information quick identification device based on DSP; Comprise housing; It is characterized in that; Image capture module, image processing module, PLD, communication module and LCD MODULE are installed in housing, and described image capture module is made up of sensor and image decoder; Sensor is connected with image processing module through image decoder, and image processing module also is connected with PLD and communication module, and wherein, PLD is connected with LCD MODULE, and communication module and traffic surveillance and control center are mutual.
2. the portable car plate information quick identification device based on DSP as claimed in claim 1 is characterized in that described sensor model number is 1/4 " the special-purpose CCD module of SONY machine vision.
3. the portable car plate information quick identification device based on DSP as claimed in claim 1 is characterized in that the model of described image decoder is TVP5145.
4. the portable car plate information quick identification device based on DSP as claimed in claim 1 is characterized in that described LCD MODULE model is FYD12864-0402B.
5. the portable car plate information quick identification device based on DSP as claimed in claim 1 is characterized in that described image processing module is selected image digital signal processor TMS320DM642 for use.
6. the portable car plate information quick identification device based on DSP as claimed in claim 1 is characterized in that, also is connected with storer on the described image processing module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204167405U CN202306822U (en) | 2011-10-27 | 2011-10-27 | Portable license plate information quick identification device based on digital signal processor (DSP) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204167405U CN202306822U (en) | 2011-10-27 | 2011-10-27 | Portable license plate information quick identification device based on digital signal processor (DSP) |
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| CN202306822U true CN202306822U (en) | 2012-07-04 |
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| CN2011204167405U Expired - Fee Related CN202306822U (en) | 2011-10-27 | 2011-10-27 | Portable license plate information quick identification device based on digital signal processor (DSP) |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574997A (en) * | 2015-01-23 | 2015-04-29 | 北京邮电大学 | Illegal parking recording law enforcement method |
| CN105043256A (en) * | 2015-08-07 | 2015-11-11 | 重庆铸豪机械有限责任公司 | Device for automatically detecting accuracy of electric machinery end cap |
| CN105046976A (en) * | 2015-08-20 | 2015-11-11 | 成都众孚理想科技有限公司 | Hand-held mobile terminal monitoring equipment for monitoring taxis for intelligent traffic |
| CN108182435A (en) * | 2018-01-15 | 2018-06-19 | 昆明理工大学 | Licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification |
| CN109191858A (en) * | 2018-09-26 | 2019-01-11 | 佛山市公安局 | One kind investigating and seizing method and apparatus |
-
2011
- 2011-10-27 CN CN2011204167405U patent/CN202306822U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104574997A (en) * | 2015-01-23 | 2015-04-29 | 北京邮电大学 | Illegal parking recording law enforcement method |
| CN105043256A (en) * | 2015-08-07 | 2015-11-11 | 重庆铸豪机械有限责任公司 | Device for automatically detecting accuracy of electric machinery end cap |
| CN105046976A (en) * | 2015-08-20 | 2015-11-11 | 成都众孚理想科技有限公司 | Hand-held mobile terminal monitoring equipment for monitoring taxis for intelligent traffic |
| CN108182435A (en) * | 2018-01-15 | 2018-06-19 | 昆明理工大学 | Licence plate detection identification device after a kind of vehicle duplicate rows character of view-based access control model identification |
| CN108182435B (en) * | 2018-01-15 | 2024-04-12 | 昆明理工大学 | Vehicle double-row character rear license plate detection and recognition device based on visual recognition |
| CN109191858A (en) * | 2018-09-26 | 2019-01-11 | 佛山市公安局 | One kind investigating and seizing method and apparatus |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20121027 |