CN103544297B - Public transport transportation integrated information control system and method based on planar bar code technology - Google Patents
Public transport transportation integrated information control system and method based on planar bar code technology Download PDFInfo
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- CN103544297B CN103544297B CN201310526131.9A CN201310526131A CN103544297B CN 103544297 B CN103544297 B CN 103544297B CN 201310526131 A CN201310526131 A CN 201310526131A CN 103544297 B CN103544297 B CN 103544297B
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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Abstract
A kind of bus information management system and method for based on planar bar code technology of Internet of Things intelligent transport system field, including: the personal digital assistant device being arranged in bus, wireless connection and the integrated information real-time data base being arranged at outside bus and server therewith, personal digital assistant device is connected with gps satellite and real-time update current GPS coordinate information, personal digital assistant device is connected with server and transport packet, server is connected with integrated information real-time data base and transmits user's inquiry request information, transmission inquery information result between personal digital assistant device and integrated information real-time data base；The present invention is attached to static two dimensional code port and the cellphone GPS location of seat back in utilizing bus, be supplied to during trip passenger real arrive at a station the abundant life informations of going on a journey dynamically such as prediction, erect the information communication bridge between public transport company and user, help passenger makes rational planning for go on a journey and arranges, make up the deficiency of traditional means, improve resident trip efficiency, make traffic more smooth and easy.
Description
Technical field
The present invention relates to the system of a kind of Internet of Things intelligent transport system field, specifically a kind of based on Quick Response Code skill
The Bus information control system of art and method.
Background technology
Quick Response Code is to be distributed chequered with black and white figure the most in the plane to record certain of data symbol information
Specific geometric figure, extensively application is with business industry, is used for transmitting information or as dock door etc..With traditional one
Dimension bar code is compared, and is characterized in that storage capacity is big, confidentiality is high, traceability is high, cost is cheap, has at field of traffic bigger
Application potential, including traffic study, integrated traffic information collection, service platform construction etc..
The focus of prior art research focuses primarily upon two aspects: Quick Response Code is used for the research that transit riding is paid dues
Study with the moving 2 D code on bus stop board.
Pay dues in terms of research at Quick Response Code for transit riding, Kang et al. (2009) by the network platform, Quick Response Code,
Wap technology is effectively combined, and constitutes more reasonable, a convenient electronic ticket business system.Finally devise one
The network platform, main technological core is selection and the generation of picture of Quick Response Code.Quick Response Code is that one has Large Copacity, reliable
Property the features such as degree high, false proof is strong bar code, the Quick Response Code BMP form generating algorithm that research provides, have that formation speed is fast, figure
The features such as sheet volume is little, the two-dimension code image that this algorithm is generated simultaneously, not only normally can show in disparate networks browser
Show, also support that the two-dimension code image download preservation generated is printed with online in terminal by user.
Pan et al. (2012) discusses the method that research uses mobile phone two-dimension code to serve as payment mediator in public transport,
By the cooperation between public transport company and MTR and mobile operator, promote the utilization in public transport of this technology, take advantage of
Visitor obtains the Quick Response Code of relevant denomination by SMS, and expense is deducted in its telephone expenses.By being arranged on bus and ground
The identification terminal of porch, iron station, the Quick Response Code that passenger's swipe mobile phone receives completes booking formality, greatly facilitates going out of passenger
OK.
In terms of moving 2 D code research on bus stop board, some city all has been put into application.In Hangzhou, public transport
Quick Response Code is Hangzhou Bus Group and Hangzhou Thirdnet Technology Co., Ltd. combines the public trip 2 D code information inquiry system of release
System, this is the current domestic planar bar code technology first Application in public transport field.There is it, just as with Zhang Hangzhou public transport
Where figure, sit any car the most absolutely clear.By the two-dimensional bar code laid at bus stop, the whole city, public bicycles station etc.,
User by downloading and can install special bar code identification application software, and utilizing the camera of mobile phone to clap code can arrive
The network address specified, there is different Quick Response Codes each bus station, as long as one claps it is seen that the region at a user place
Map, it is possible to obtain periphery food and drink, amusement, road, Bus information and transfer information whenever and wherever possible.2011, full Hangzhou
More than 9000 bus stations and bicycle website are all progressively laying Quick Response Code.Occur in the Quick Response Code in each corner, city, by
Step constitutes the entrance surfed the Net whenever and wherever possible.The per day visit capacity of Quick Response Code reaches 5.9 ten thousand person-times, and peak has broken through 80,000 people
Times/day, access total amount by the moon and break through million.This project is also in the 9th Chinese cyber port forum awards ceremony " outstanding achievements prize "
Win national gold medal.And in Shijiazhuang, Shijiazhuang City in 2012 has completed Quick Response Code Bus transit informization pilot project, as
The domestic seat of honour introduces the city of this engineering, and Shijiazhuang also becomes the mark post city of Bus transit informization.Shijiazhuang Public Transportation Corporation
Start to carry out i code public transport public service platform from the second half year in 2011, Quick Response Code, passenger are set in public transport stop board, bus
The multinomial public service information such as public bus network information can be obtained with mobile phone shooting Quick Response Code.Further application then includes station, station
Inquiry, silent alarm, public transport ticket card are supplemented with money.At present, this engineering has covered full Shijiazhuang City bus station and bus.
But, Quick Response Code can not provide the letter of the aspects such as public transport for the pay dues research of aspect of transit riding to passenger
Breath；In terms of moving 2 D code research on bus stop board, the information that station board Quick Response Code pushes is the most limited, generally website
The static informations such as neighbouring business information and first final vehicle hour, more can do nothing to help the passenger got on the bus, and such Quick Response Code is also
Do not play real effectiveness.
Through the retrieval of prior art is found, Chinese patent literature CN203055173, publication date 2013-07-10,
Disclose one " intelligent bus inquiry system based on RFID and Quick Response Code ", including car-mounted terminal, bus service device and public transport
Platform, car-mounted terminal carries out the Real-time Collection of vehicle traveling information treated by the RFID reading bus platform
Transmitting data by wireless network to bus service device afterwards, bus service device carries out information processing after receiving data, stores and carry
For inquiry service, the Quick Response Code of bus platform can provide site intelligent public transportation enquiry approach.But the prior art and phase of the present invention
Defect and the deficiency of ratio are: 1. this technology can only carry out information updating in bus stop, and information updating is not in time.If
At a certain station, nobody gets on or off the bus and then cannot be carried out information transmission when bus is not stopped；2. bus station circumstance complication, during peak
The phase stream of people is big, and this influences whether that RFID data is transmitted；3. this technological service object is only for the passenger waited for bus AT STATION, for
The passenger got on the bus does not helps.
Summary of the invention
The present invention is directed to deficiencies of the prior art, propose a kind of public transport integrated information based on planar bar code technology
Control system and method, be attached to static two dimensional code port and the cellphone GPS location of seat back, it is provided that give in utilizing bus
Arrive at a station during trip passenger real the abundant life informations of going on a journey dynamically such as prediction, erects the information communication between public transport company and user
Bridge, help passenger makes rational planning for go on a journey and arranges, make up the deficiency of traditional means, improves resident trip efficiency, make traffic more suitable
Freely.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of public transport integrated information control system based on planar bar code technology include: be arranged in bus
Personal digital assistant device, therewith wireless connection and the integrated information real-time data base being arranged at outside bus and server, wherein:
Personal digital assistant device is connected with gps satellite and real-time update current GPS coordinate information, and personal digital assistant device is connected also with server
Transport packet, server is connected with integrated information real-time data base and transmits user's inquiry request information, personal digital assistant device
And transmission inquery information result between integrated information real-time data base.
Described information bag is made up of current GPS coordinate information and user's inquiry request information.
Described query information result refers to: the arbitrary or a combination thereof in transport information, environmental information or life information.
Described information labels is that Quick Response Code QR code realizes, and this information labels is by the safety verification code of 10, the car of 20
Information code and the expansion code composition of 50, wherein: information of vehicles code is further by Bus Schedules, the first and last class of 8 of 8
Car time and the vehicle ID composition of 4, specific as follows:
Table 1
| Code bit (totally 80) | Length | Function | Annotation |
| [0]～[9] | 10 | Safety verification code | False proof |
| [10]～[17] | 8 | Bus Schedules | Nothing |
| [18]～[25] | 8 | The first final vehicle hour | Such as 0600～2230 |
| [26]～[29] | 4 | Vehicle ID | Represent vehicle model |
| [30]～[79] | 50 | Expand code | Expand and add New function |
Described Bus Schedules is used to the key message of searching database, a corresponding circuit of train number；
Described expansion code will be for expanding in future and adding New function.
Described personal digital assistant device includes: information acquisition unit, Quick Response Code decoding unit, safety verification unit, user
Request unit, GPS chip and map unit, wherein: information acquisition unit is connected with Quick Response Code decoding unit and transmits initial two
Dimension code information, Quick Response Code decoding unit is connected with safety verification unit and transmits decoded information, and GPS chip is connected with map unit
And transmitting accurate location information, map unit is connected with user's request unit and transmits the cartographic information of user's needs.
Described map unit includes: MapActivity unit, MapView unit, MapController unit, its
In: MapActivity unit is connected with bottom-layer network and transmits display laminated information, and MapView unit shows map, and
MapController unit is connected with user's request unit, controls the movement of map, scaling.
The described built-in transport information of integrated information real-time data base, environmental information and life information.
The present invention relates to the control method of said system, comprise the following steps:
Step 1, carry out video acquisition by the personal digital assistant device information labels to being arranged on bus after solve
Code, is converted into two coding forms image in 2 D code, obtains 2 D code information；
Step 2, when two-dimensional encoded by safety verification, two codings will decode once again, and obtain vehicle therein letter
Breath；
The current GPS that step 3, information of vehicles step 2 obtained are collected together with the GPS chip of personal digital assistant device
Coordinate information, user's inquiry request information composition information bag, wirelessly sends to server；
The information bag produced in step 3 is resolved by step 4, server end, it is thus achieved that personal digital assistant device is currently located
Accurate location information and vehicle service condition information, and user's inquiry request information is exported to integrated information real time data
Storehouse；
Step 5, information real-time data base are according to the user's inquiry request information produced in step 4, and finally by wireless
Query information result is exported to personal digital assistant device by mode, is shown at personal digital assistant device screen by personal digital assistant device
On, complete the mutual of information.
Technique effect
Compared with prior art, the beneficial effect comprise that
1) shuttle back and forth the design of Quick Response Code.Developing integrated information service platform can allow static two dimensional code port position with GPS
Effectively combine, the quick bridge between framework public transport company and passenger.
2) design of position is expanded.When adding New function on platform, only need to adjust coding in little scope, system can facilitate
Update.The exploitation of console module is expanded and is had more feasibility.
3) design of fake certification code.The incongruent Quick Response Code of identifying code just cannot be linked to database, and the page can show
Connection error, so can ensure that security during passenger's barcode scanning.
4) personalized user's customization.The design expanding code makes public transport company can be increased or decreased according to user's request
Service module.Such as, in existing cell-phone customer terminal, " public transport Cycle Hire " customization is provided for client.In addition with many
Linguistic functions etc. are expanded.
Accompanying drawing explanation
Fig. 1 is overall logic figure of the present invention.
Fig. 2 is transport information classification schematic diagram in embodiment.
Fig. 3 is mobile phone display page schematic diagram in embodiment.
Fig. 4 is shen village town-road condition query schematic diagram in embodiment.
Fig. 5 is mobile phone display page schematic diagram in embodiment.
Fig. 6 is mobile phone display page figure schematic diagram in embodiment.
Fig. 7 is mobile phone display page schematic diagram in embodiment.
Fig. 8 is the Android phone setting options schematic diagram that " enables gps satellite " in embodiment.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following enforcement
Example.
Embodiment 1
The present embodiment is with Shanghai City Hongqiao transportation hub 4 tunnel public transport as test circuit, and the traffic of integrated public bus network periphery is lived
Information, utilizes the characteristics such as Quick Response Code storage capacity is big, confidentiality is high, traceability is high, cost is cheap, builds public transport company and passenger
Link up bridge.Reach to make up the deficiency of traditional directory means, optimize trip decision-making, improve and line efficiency, it was demonstrated that planar bar code technology
Purpose at the application feasibility in public transport field.
As it is shown in figure 1, the present embodiment includes: the personal digital assistant device that is arranged in bus, therewith wireless connection and set
The integrated information real-time data base being placed in outside bus and server, wherein: personal digital assistant device is connected with gps satellite and real-time
Updating current GPS coordinate information, personal digital assistant device is connected with server and transport packet, and server is real-time with integrated information
Database is connected and transmits user's inquiry request information, transmission inquery between personal digital assistant device and integrated information real-time data base
Information result.
This system is accomplished by real-time management:
Step 1, carry out video acquisition by the personal digital assistant device information labels to being arranged on bus after solve
Code, is converted into two coding forms image in 2 D code, obtains 2 D code information；
Step 2, when two-dimensional encoded by safety verification, two codings will decode once again, and obtain vehicle therein letter
Breath；
The current GPS that step 3, information of vehicles step 2 obtained are collected together with the GPS chip of personal digital assistant device
Coordinate information, user's inquiry request information composition information bag, wirelessly sends to server；
The information bag produced in step 3 is resolved by step 4, server end, it is thus achieved that personal digital assistant device is currently located
Accurate location information and vehicle service condition information, and user's inquiry request information is exported to integrated information real time data
Storehouse；
Step 5, information real-time data base are according to the user's inquiry request information produced in step 4, and finally by wireless
Query information result is exported to personal digital assistant device by mode, is shown at personal digital assistant device screen by personal digital assistant device
On, complete the mutual of information.
When particular user uses, download the client of the present invention first by Android mobile phone, then open client and sweep
Retouch the Quick Response Code being attached to bus seat behind, after entering the page, passenger it will be seen that transport information, information of vehicles, environmental information,
Life and personalized four options.
If as in figure 2 it is shown, select transport information, passenger can be appreciated that again inquiry of arriving at a station, road condition query, transfer three choosings of inquiry
?.Selection is arrived at a station inquiry, and screen there will be next stop distance and two contents of present speed, it is provided that be used for estimating to arrive in advance to passenger
Reach the time.If selection road condition query, mobile phone by with the map situation that intuitively shows in 1 kilometer of current location periphery that the road is clear,
This contributes to, and passenger is effectively anticipated arrives destination time.If selecting transfer inquiry, mobile phone will directly display passenger and i.e. will
The website reached, and the title of later all websites and neighbouring terrestrial reference.Clicking on one of them site name, mobile phone will show
The transfer circuit of the periphery of each website, transfer site, the service time, headway and road are through website, and this can make
Passenger improves interchange efficiency.
Arrive at a station inquiry: owing to urban road surface state is complicated, be full of uncertainty, it is impossible to estimate destination exactly
The point time.Therefore, information of arriving at a station only includes next stop distance and vehicle present speed two indices, it is provided that be used for estimating to passenger
Pre-arrival time.As a example by Hongqiao 4 road Min Zhong Hu Lu Chunshen way station point to shen village's website, set up database table as follows:
Calculating next stop distance and vehicle present speed further according to algorithm, mobile phone shows as shown in Figure 3.
Road condition query: provide road name on the database, starting point, terminal longitude and latitude, terminal longitude and latitude, traffic,
Employing map presents, and redness is heavy congestion, and green is smooth and easy, and yellow is for typically to block up.If passenger selects road condition query, mobile phone
By with the map situation that intuitively shows in 1 kilometer of current location periphery that the road is clear, this contributes to, and passenger is effectively anticipated arrives mesh
The ground time.Hongqiao transportation hub 4 road is omnidistance by way of 6 small towns/Street Community, and choosing a representative stations in each town is
Example, sets up 6 databases.As a example by the website inquiry of town shen village of shen village, as shown in Figure 4.The mobile phone page shows such as following table:
| ID | Road | Starting point longitude | Starting point latitude | Terminal longitude | Terminal latitude | Traffic |
| 1 | Seven Xin Lu | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Smooth and easy |
| 2 | Hu Min highway | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Typically block up |
| 3 | Hu Min highway | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Typically block up |
| 4 | Xin Song road | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Block up |
| 5 | Xin Song road | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Typically block up |
| 6 | Hu Min highway | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Unobstructed |
| 7 | Hu Min highway | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Unobstructed |
| 8 | Shen road construction | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Smooth and easy |
| 9 | Shen road construction | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Typically block up |
| 10 | Xin Jian East Road | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Typically block up |
| 11 | Xin Jian East Road | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | East longitude E121 ° 22 ' | North latitude N31 ° 06 ' | Block up |
These data gathered on the spot on March 8th, 2013, and in actual application, these information need to be by public transport company/network operator
Thering is provided, database will real-time update.
Transfer inquiry: provide each of Hongqiao transportation hub 4 tunnel and stop station and neighbouring landmark building, can help visitor or not
The passenger being familiar with saves the time.Select transfer inquiry, mobile phone will directly display the website that passenger i.e. will reach, and after
The title of all websites and periphery terrestrial reference.Following table provides the database as a example by Hu Min Lu Chunshen way station point to shen village's website,
Mobile phone shows as shown in Figure 5.Certain website in passenger selects Fig. 5, mobile phone screen will show this website week
The transfer circuit on limit and place.As a example by selecting shen village station, transfer inquiry database is as shown in the table:
Mobile phone interface is as shown in Figure 6.When passenger selects certain circuit, mobile phone screen will show the operation of this transfer circuit
Time, headway and road are through website, to improve interchange efficiency.As a example by 116 circuits, database is as shown in the table:
The mobile phone display page is as shown in Figure 7.
If selection information of vehicles, mobile phone will show the vehicle title at place, information of vehicles, first final vehicle hour, car owner
The information such as information, public transport licence plate.
If Environment information, the inner city real-time weather information in screen, display meteorological observatory issued, PM2.5 index
And air quality index.
Described environmental information is broadly divided into meteorological inquiry, air quality, index number of price three aspect.Source is meteorological for Shanghai
The information promulgating platform of office.If public transport department can cooperate with weather bureau, directly share the information that weather bureau issues, the most permissible
Passenger's the most first-hand the most convenient Life Meteorological information is provided.1. the temperature of meteorological observatory's issue, relative humidity, ultraviolet etc.
The inner city real-time weather informations such as level refresh once per hour.Except meteorology inquiry on the same day, also provide for nearest five days weather lookup.
2. five conventional index numbers of price are body-sensing, airing, heatstroke, fire, exercise in evening index respectively.Each index has 4 grades, with straight
Sight color bar represents.Index is closer to life and the most easy-to-understand.This kind of exponent prediction is by chance weather lookup cell phone software
The less content contained.3. the forecast of air quality.Air quality index (AQI, air quality index) different brackets pair
The measure that health effect situation and suggestion are taked is all different.Similar with transport information, according to Hongqiao transportation hub 4 approach
6 towns, forecast the air quality situation in each town.
If selecting life, screen will show five conventional index numbers of price, be body-sensing, airing, heatstroke, fire, forging in evening respectively
Refining index.Each index has 4 grades, represents with apparent color bar.Index is closer to life and the most easy-to-understand.This kind of
Exponent prediction is by chance the less content contained of weather lookup cell phone software.
If selecting personalization, it will the expanding functions such as " public transport Cycle Hire " customization, multilingual function occur.
Claims (5)
1. a public transport integrated information control system based on planar bar code technology, it is characterised in that including: be arranged on bus
Information labels, the personal digital assistant device being arranged in bus, therewith wireless connection and the integrated letter being arranged at outside bus
Breath real-time data base and server, wherein: personal digital assistant device is connected with gps satellite and real-time update current GPS coordinate information,
Personal digital assistant device is connected with server and transport packet, and server is connected with integrated information real-time data base and transmits user
Inquiry request information, transmission inquery information result between personal digital assistant device and integrated information real-time data base；
Described information bag is made up of current GPS coordinate information and user's inquiry request information；
Described query information result refers to: the arbitrary or a combination thereof in transport information, environmental information or life information；
Described information labels is that Quick Response Code QR code realizes；
The described built-in transport information of integrated information real-time data base, environmental information and life information；
Described information labels by: the expansion code of the safety verification code of 10, the information of vehicles code of 20 and 50 forms, its
In: information of vehicles code is made up of vehicle ID of the Bus Schedules of 8, the first final vehicle hour of 8 and 4 further.
System the most according to claim 1, is characterized in that, described Bus Schedules is used to the crucial letter of searching database
Breath, a corresponding circuit of train number；
Described expansion code will be for expanding in future and adding New function.
System the most according to claim 1, is characterized in that, described personal digital assistant device includes: information acquisition unit, two
Dimension code decoding unit, safety verification unit, user's request unit, GPS chip and map unit, wherein: information acquisition unit with
Quick Response Code decoding unit is connected and transmits original two-dimensional code information, and Quick Response Code decoding unit is connected with safety verification unit and transmits
Decoded information, GPS chip is connected with map unit and transmits accurate location information, and map unit is connected also with user's request unit
The cartographic information that transmission user needs.
System the most according to claim 3, is characterized in that, described map unit includes: MapActivity unit,
MapView unit, MapController unit, wherein: MapActivity unit is connected with bottom-layer network and transmits display and folds
Layer information, MapView unit display map, and MapController unit is connected with user's request unit, controls the shifting of map
Dynamic, scaling.
5. the control method according to system described in any of the above-described claim, it is characterised in that comprise the following steps:
Step 1, carry out video acquisition by the personal digital assistant device information labels to being arranged on bus after be decoded,
Image in 2 D code is converted into two coding forms, obtains 2 D code information；
Step 2, when two-dimensional encoded by safety verification, two codings will decode once again, and obtains information of vehicles therein；
The current GPS coordinate that step 3, information of vehicles step 2 obtained are collected together with the GPS chip of personal digital assistant device
Information, user's inquiry request information composition information bag, wirelessly sends to server；
The information bag produced in step 3 is resolved by step 4, server end, it is thus achieved that personal digital assistant device is currently located definitely
Positional information and vehicle service condition information, and user's inquiry request information is exported to integrated information real-time data base；
Step 5, information real-time data base are according to the user's inquiry request information produced in step 4, and finally by wireless mode
Query information result is exported to personal digital assistant device, shows on personal digital assistant device screen by personal digital assistant device, complete
One-tenth information mutual.
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| CN104134366A (en) * | 2014-06-30 | 2014-11-05 | 上海市第一师范学校附属小学 | Station arrival reminder |
| CN104700260A (en) * | 2015-03-26 | 2015-06-10 | 何冬华 | Method for achieving bus taking voucher by using two-dimension code displayed by mobile phone |
| CN105812389A (en) * | 2016-05-16 | 2016-07-27 | 安徽工业大学 | Information service system and method for operating vehicle |
| CN105933362A (en) * | 2016-07-13 | 2016-09-07 | 北京恒华伟业科技股份有限公司 | Project progress monitoring method, device, and system |
| CN109145228A (en) * | 2018-10-29 | 2019-01-04 | 武汉东湖大数据交易中心股份有限公司 | A kind of fixed-time traffic state internet checking and methods of exhibiting |
| CN110955848A (en) * | 2019-11-13 | 2020-04-03 | 杭州奥利都斯科技有限公司 | Sundial time difference code scanning acquisition method |
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| CN102840864A (en) * | 2012-09-19 | 2012-12-26 | 腾讯科技（深圳）有限公司 | Method and system for carrying out positioning and navigation by means of two-dimensional codes |
| CN103366554A (en) * | 2013-06-28 | 2013-10-23 | 上海市七宝中学 | Bus information tracking and querying method |
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