CN105575161A - Low-power-consumption intelligent bus arrival reminding method for cellphone terminal - Google Patents
Low-power-consumption intelligent bus arrival reminding method for cellphone terminal Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/123—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams
- G08G1/133—Traffic control systems for road vehicles indicating the position of vehicles, e.g. scheduled vehicles; Managing passenger vehicles circulating according to a fixed timetable, e.g. buses, trains, trams within the vehicle ; Indicators inside the vehicles or at stops
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Abstract
The invention provides a low-power-consumption intelligent bus arrival reminding method for a cellphone terminal. The method includes following steps: step 1, when a passenger takes a bus, the passenger sends a request of route information of the bus which the passenger is going to take to a server terminal by employing a wireless network data transmission and reception module of the cellphone terminal; step 2, the server terminal returns the route information of the bus which the passenger is going to take to the passenger; step 3, the passenger selects a destination station, an arrival reminding critical distance is set, and the maximum average speed of the bus is estimated; step 4, after the cellphone terminal receives coordinate information of the to-be-arrived station, a GPS module of the cellphone terminal is opened, the GPS module locates the current bus position and obtains the current position coordinate of the passenger, and the position refers to the current position of the bus; and step 5, the linear distance between the current position and the target station is calculated. No matter how far it is, the calculating frequency can be always maintained to be lower than 10. The method does not need to add extra devices on the buses.
Description
Technical field
The present invention relates to Geographic Information System field, be specifically related to a kind of low power-consumption intelligent public transport arrival reminding method for mobile phone terminal.
Background technology
Bus is the important tool of urban transportation, current, when passenger takes bus, generally takes bus stop reporting to carry out reminding passengers and gets off.This mode is noisy at environment, passenger diverts one's attention or passenger situation is unfamiliar with etc. to surrounding enviroment under often cannot play the effect of reminding in time, the situation that passenger goes past one's station happens occasionally, and brings inconvenience to the trip of people.
For effectively solving public transport arrival reminding problem, application number is that the Chinese patent of CN201210026422.7 discloses a kind of bus arrival reminding system, passenger is after utilizing handset customization value-added service, increment service system obtains the information of arriving at a station of bus by vehicle-mounted automatic audio network, and is arrived at a station by SMS platform reminding user and get off.This is a kind of thin client mode, and cell-phone customer terminal is only responsible for customizing arrive at a station reminding business and the arrival reminding information receiving remote server transmission.The program needs bus to possess automatic positioning die block and communication module, need to be accomplished to by the communication between bus and service platform position of standing firm, and the short message service that final dependence produces extra cost carrys out reminding passengers and gets off, and embodiment is complicated, and expense is higher.Another kind of scheme is Fat Client pattern, cell-phone customer terminal deployment base geography information and public bus network information, target setting website during passenger loading, mobile phone calculates current bus location distance to targeted sites at regular intervals, when being less than or equal to a certain setpoint distance (as 200 meters), mobile phone starts the vibrating alert that arrives at a station, and reminding passengers prepares to get off.This scheme needs (as 20 seconds) at regular intervals calculate once distance and compare with the arrival reminding critical distance of setting, is less than or equal to, starts arrival reminding, be greater than, and again calculates and compares, until distance is less than arrival reminding critical distance.The key of this scheme is the setting at interval computing time, and under certain time interval, passenger by bus distance is longer, calculates number of comparisons more.The little time interval can be improved the accuracy rate of arrival reminding but can be increased calculated rate, greatly increases mobile telephone power consumption, and mobile phone power consumption is accelerated.GPS locates inherently power consumption, and comparatively greatly, interval is too little can make the matter worse undoubtedly, makes user be difficult to accept; Although the large time interval can reduce calculated rate, reduce power consumption, be easy to the lower level error occurring that object website was just reminded.
Summary of the invention
The problem and shortage of existing scheme in view of the above, the object of the present invention is to provide a kind of low power-consumption intelligent public transport arrival reminding method for mobile phone terminal, the method is with being furnished with the smart mobile phone of GPS module and wireless network data transceiver module as client, to have the database of bus station information as data server, the two is set up by wireless network and connects.The mode dynamic conditioning taking public transport maximal rate to estimate calculates the time interval of the distance of targeted sites, on the basis ensureing accuracy rate, greatly reduces mobile telephone power consumption.No matter how far distance can make calculation times substantially remain on units.The method without the need to adding extra equipment on bus.
For achieving the above object, the present invention by the following technical solutions: a kind of low power-consumption intelligent public transport arrival reminding method for mobile phone terminal, it is characterized in that, it comprises the following steps:
Step one, passenger, when taking bus, utilizes the bus routes information that the wireless network data transceiver module of mobile phone terminal will be taken to server end request;
Step 2, server end returns to passenger the bus routes information that passenger will take;
Step 3, passenger selectes the targeted sites that will arrive, and setting arrival reminding critical distance S0, estimates the maximum average velocity Vmax of bus;
Step 4, mobile phone terminal, after the coordinate information receiving the website that will arrive, opens the GPS module of mobile phone terminal, and GPS module locates current public transport position, obtains passenger's current position coordinates, the namely current location of bus;
Step 5, calculates the air line distance S between current location and targeted sites;
Step 6, compares air line distance S and whether is greater than arrival reminding critical distance S0, if so, then perform step 8; If not then performing step 7;
Step 7, if air line distance S is not more than arrival reminding critical distance S0, mobile phone terminal vibrating alert passenger getting off car, then terminates;
Step 8, otherwise calculate bus fastest to reaching target endpoint time T=S/Vmax;
Step 9, suspends GPS location;
Step 10, after bus travels T time, recovers GPS location, regains current bus location coordinate and forward step 5 to, until complete this arrival reminding.
Preferably, described bus maximum average velocity Vmax obtains according to the statistics of the multi-period maximum average velocity of many, city bus.
Preferably, described arrival reminding critical distance S
0value is be less than the minor increment on this circuit between adjacent two websites, is greater than the half of the minor increment on this circuit between adjacent two websites.
Preferably, described mobile phone terminal is furnished with GPS module and wireless network data transceiver module and as client; Server end has the database of bus station information; Both client and server ends are set up by wireless network and are connected.
Preferably, described client deployment low-power consumption public transport arrival reminding algorithm, is automatically located by client GPS, and utilizes the site information in database to complete arrival reminding, server end comprises WebServices interface, utilizes WebClient technology request msg, comprises data upload requests strategy and data download request strategy, data upload requests strategy creates background thread in client, and uses self-defining Uploader type in background thread, together with information such as public transport state and public bus network IDs uploads onto the server after the position obtained is converted to map reference by GPS, upload a secondary data every certain time interval, stop terminating upload request until user clicks, data download request strategy creates background thread in client equally, and use self-defining Downloader type in background thread, public bus network ID to be uploaded onto the server end, server does corresponding inquiry according to concrete public bus network ID and after screening calculates, data list is turned back to client, client receives information, it is corresponding Bus information list of entities by these information analysis, client map shows, for making data, there is real-time, also a latest data is downloaded at interval at regular intervals, stop terminating download request until user clicks.
Preferably, described server end disposes the database having bus station information, and server end utilizes WCF technology, creates the WebService based on Rest style; Web service uses LINQToSQL technology and SQLServer database alternately, and service arrangement, on IIS, externally uses Internet access; Service inside provides memory interface and query interface, and memory interface is defined as POST request, and query interface is defined as GET request; It is LINQToSQL entity type that memory interface to receive convert information such as public transport positions after request, and wherein creation-time attribute is unified adopts server current time; Database carries out data storage after receiving submiting command; After query interface receives external request, with public bus network ID for query argument, search algorithm extracts this circuit public transport data list in database within the scope of certain hour according to public bus network ID, filter public transport data list, the actual public transport position obtaining this circuit bus returns to client.
Compared with prior art, the present invention has following beneficial effect: the present invention is furnished with the cell phone apparatus of GPS module and wireless network data transceiver module as client, to have the database of bus station information as server, automatically located by client, and utilize the information of database to complete arrival reminding.The method is by the air line distance between calculating passenger position and targeted sites and set time-out and the use that the maximum average velocity of bus controls GPS module effectively, reduce the power consumption of mobile phone terminal, this implementation method is deployed in intelligent mobile phone terminal, start during passenger loading, in riding process, automatically complete arrival reminding.Compared with other method, the method is without the need to increasing extras, and system is simple, and low in energy consumption, accuracy is high, economical and practical.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of cell-phone customer terminal request strategy of the present invention;
Fig. 2 is the schematic diagram of server service implementation strategy of the present invention;
Fig. 3 a to Fig. 3 d is that the embodiment of the present invention sets arrival reminding critical distance 200m at four diverse locations, estimates arrival reminding algorithm schematic diagram during bus average velocity 10m/s;
Fig. 4 is embodiment of the present invention arrival reminding algorithm realization process flow diagram.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is that arrival reminding critical distance 200m is explained for public transport average velocity 10m/s, is a part of embodiment of the present invention, instead of all.Based on the embodiment in the present invention, those skilled in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The preferred embodiments of the present invention accompanying drawings is as follows:
Fig. 1 describes the smart mobile phone client-requested strategy embodiment that the present invention is directed to WP operating system.Smart mobile phone client installs WindowsPhone operating system.WindowsPhone can request server end WebServices interface, mainly utilizes WebClient technology request msg.As Fig. 1, server end passes through IIS(InternetInformationService, Internet Information Service) WebService to be disposed, client needs to send Web by Internet to server end asks and accepts corresponding data.Concrete request strategy is divided into data upload requests strategy and data download request strategy.
Data upload requests strategy: user have selected public bus network and public transport state, specified terminus after click confirming button, mobile client just carries out uploading data behavior.In order to not affect the work of main thread, client creates background thread, and use self-defining Uploader type in background thread, after the position obtained by GPS is converted to map coordinate location, this position and the information such as public transport state and public bus network ID are assigned to corresponding public transport location information entities, this entity sequence is turned to Json string format, by WebClient by this character string POST to server end, server parses character string does corresponding storage, complete the request of single uploading data, for making data, there is real-time, a latest data is uploaded every 10s, stop terminating upload request until user clicks.
Data download request strategy: user selectes public bus network and after clicking the Show Button, mobile client starts to perform data download request.Similarly, in order to not affect the work of main thread, client creates background thread, and use self-defining Downloader type in background thread, public bus network ID sequence is turned to Json string format, by WebClient by this character string GET to server end, this character string of server parses, corresponding inquiry is done and after screening according to concrete public bus network ID, data list is turned back to client with Json string format, client receives information, it is corresponding Bus information list of entities by these information analysis, according to public transport status data with the public transport icon of different colours, the relevant position of map is shown to by public transport position data.After single request of data completes, for making data have real-time, also downloading a latest data every 10s, stopping terminating download request until user clicks.
Fig. 2 describes server service implementation strategy embodiment of the present invention.Server end utilizes WCF technology, creates the WebService based on Rest style.Web service uses LINQToSQL technology and SQLServer database alternately, and service arrangement externally uses Internet access on IIS.Service inside provides memory interface and query interface, and memory interface is defined as POST request, and query interface is defined as GET request.It is LINQToSQL entity type that memory interface to receive convert information such as public transport positions after request, and be the availability ensureing data, wherein creation-time attribute is unified adopts server current time.Database carries out data storage after receiving submiting command.After query interface receives external request, with public bus network ID for query argument, for ensureing the real-time of data, search algorithm extracts this circuit public transport data list of nearly 10s in database according to public bus network ID.Owing to may there is multiple user simultaneously uploading data in each bus, and uplink time is inconsistent, public transport data can present position of bus among a small circle in have multipoint data.Need to filter public transport data list, setting fuzzy distance, the multi-site data within the scope of fuzzy distance is extracted a point as public transport location point, the actual public transport position obtaining this circuit bus returns to client.
See Fig. 3 a to Fig. 3 d.The main algorithm of this low power-consumption intelligent public transport arrival reminding is all deployed in smart mobile phone client.Fig. 3 illustrates for the algorithm embodiment of public transport average velocity 10m/s, arrival reminding critical distance 200m.Fig. 3 a represents bus and is positioned at position on actual track 1. 2. 3. three moment, Fig. 3 b, 3c, 3d be respectively in position 1., 2., 3. time, bus is to the air line distance of targeted sites.Suppose that the maximum average velocity of bus is 10m/s, 1. represent reference position during passenger loading, calculating current location is 2000m to the air line distance of targeted sites first, is greater than 200m, does not need to remind (Fig. 3 b).The time that next time calculates is after 2000/10=200s, and after bus travels 200s, 2., calculating current location is 600m to the air line distance of targeted sites again, is still greater than 200m in in-position, does not need to remind (Fig. 3 c).The time that next time calculates is after 600/10=60s, and after bus travels 60s, 3., calculating current location is 150m to the air line distance of targeted sites again, is less than 200m in in-position, starts reminding passengers and gets off (Fig. 3 d).
See Fig. 4.Fig. 4 is the algorithm realization process flow diagram of this low power-consumption intelligent public transport arrival reminding method, and the low power-consumption intelligent public transport arrival reminding method that the present invention is used for mobile phone terminal comprises the following steps:
Step S1, passenger, when taking bus, utilizes the bus routes information that the wireless network data transceiver module of mobile phone terminal will be taken to server end request, as city, bus place title, public bus network title and direction; Mobile phone terminal is furnished with GPS module and wireless network data transceiver module and as client; Server end has the database of bus station information; Both client and server ends are set up by wireless network and are connected.Client deployment low-power consumption public transport arrival reminding algorithm, is automatically located by client GPS, and utilizes the site information in database to complete arrival reminding.Server end comprises WebServices interface, utilizes WebClient technology request msg, comprises data upload requests strategy and data download request strategy, data upload requests strategy creates background thread in client, and uses self-defining Uploader type in background thread, together with information such as public transport state and public bus network IDs uploads onto the server after the position obtained is converted to map reference by GPS, upload a secondary data every certain time interval, stop terminating upload request until user clicks, data download request strategy creates background thread in client equally, and use self-defining Downloader type in background thread, public bus network ID to be uploaded onto the server end, server does corresponding inquiry according to concrete public bus network ID and after screening calculates, data list is turned back to client, client receives information, it is corresponding Bus information list of entities by these information analysis, client map shows, for making data, there is real-time, also a latest data is downloaded at interval at regular intervals, stop terminating download request until user clicks.Server end disposes the database having bus station information, and server end utilizes WCF technology, creates the WebService based on Rest style; Web service uses LINQToSQL technology and SQLServer database alternately, and service arrangement, on IIS, externally uses Internet access; Service inside provides memory interface and query interface, and memory interface is defined as POST request, and query interface is defined as GET request; It is LINQToSQL entity type that memory interface to receive convert information such as public transport positions after request, and wherein creation-time attribute is unified adopts server current time; Database carries out data storage after receiving submiting command; After query interface receives external request, with public bus network ID for query argument, search algorithm extracts this circuit public transport data list in database within the scope of certain hour according to public bus network ID, filter public transport data list, the actual public transport position obtaining this circuit bus returns to client.
Step S2, server end returns to passenger the bus routes information that passenger will take, and bus routes information comprises each site name;
Step S3, passenger selectes the targeted sites that will arrive, setting arrival reminding critical distance S0, estimating bus maximum average velocity Vmax(bus maximum average velocity Vmax can be preset in advance at mobile phone terminal), bus maximum average velocity Vmax obtains according to the statistics of the multi-period maximum average velocity of many, city bus, and general empirical value gets 10m/s.Remind critical distance S
0value is be less than the minor increment on this circuit between adjacent two websites, is greater than the half of the minor increment on this circuit between adjacent two websites.
Step S4, mobile phone terminal, after the coordinate information receiving the website that will arrive, opens the GPS module of mobile phone terminal, and GPS module locates current public transport position, obtains passenger's current position coordinates, the namely current location of bus;
Step S5, calculates the air line distance S between current location and targeted sites;
Step S6, compares air line distance S and whether is greater than arrival reminding critical distance S0, if so, then performs step S8; If not then performing step S7;
Step S7, if air line distance S is not more than arrival reminding critical distance S0, mobile phone terminal vibrating alert passenger getting off car, then terminates;
Step S8, otherwise calculate bus fastest to reaching target endpoint time T=S/Vmax;
Step S9, suspends GPS location;
Step S10, after bus travels T time, recovers GPS location, regains current bus location coordinate and forward step S5 to, until complete this arrival reminding.
The mode dynamic conditioning that the present invention can be estimated by public transport maximal rate calculates the time interval of the distance of targeted sites, realizes arrival reminding, and its implementation strategy is: first passenger sets a first arrival reminding critical distance S
0, estimate a maximum average velocity V of bus simultaneously
max, and submitted to the information ridden in a bus to server by mobile phone terminal, as city, bus place, line name and line direction etc.Information garbled data rear line from database that server is submitted to according to user provides site information, and passenger selects the circuit taken advantage of and the targeted sites that will arrive.After passenger loading, obtain oneself current position coordinates by the positioning function of oneself mobile phone, be also the coordinate information of ridden in a bus current location, combining target website simultaneously, the first air line distance S between passenger's current location and targeted sites can be calculated
1.As the first air line distance S
1be less than or equal to the first arrival reminding critical distance S
0time, mobile phone vibrates immediately gets off with reminding passengers, otherwise bus travels T
1=S
1/ V
maxtime, within the T1 time, bus can not arrive targeted sites, because the usual non-directional route in path that bus travels.In the T1 time, the GPS of user mobile phone does not need to obtain the elements of a fix always yet.T
1after time, user GPS reorientates, and obtains bus current position coordinates, again calculates the second air line distance S of targeted sites
2if, the second air line distance S
2be less than or equal to the first arrival reminding critical distance S
0, reminding passengers is got off immediately, otherwise again calculates T
2=S
2/ V
max, bus travels T
2after time, GPS locates again, and repeats said process, until the air line distance calculated is less than or equal to S
0, reminding passengers is got off.So both ensure that timely reminding passengers was got off, again reduced because GPS frequently locates the mobile telephone power consumption that the distance that frequently calculates targeted sites with client brings.
The present invention is furnished with the cell phone apparatus of GPS module and wireless network data transceiver module as client, to have the database of bus station information as server, is automatically located by client, and utilizes the information of database to complete arrival reminding.The method is by the air line distance between calculating passenger position and targeted sites and set time-out and the use that the maximum average velocity of bus controls GPS module effectively, reduce the power consumption of mobile phone terminal, this implementation method is deployed in intelligent mobile phone terminal, start during passenger loading, in riding process, automatically complete arrival reminding.Compared with other method, the method is without the need to increasing extras, and system is simple, and low in energy consumption, accuracy is high, economical and practical.
Claims (6)
1., for a low power-consumption intelligent public transport arrival reminding method for mobile phone terminal, it is characterized in that, it comprises the following steps:
Step one, passenger, when taking bus, utilizes the bus routes information that the wireless network data transceiver module of mobile phone terminal will be taken to server end request;
Step 2, server end returns to passenger the bus routes information that passenger will take;
Step 3, passenger selectes the targeted sites that will arrive, and setting arrival reminding critical distance S0, estimates the maximum average velocity Vmax of bus;
Step 4, mobile phone terminal, after the coordinate information receiving the website that will arrive, opens the GPS module of mobile phone terminal, and GPS module locates current public transport position, obtains passenger's current position coordinates, the namely current location of bus;
Step 5, calculates the air line distance S between current location and targeted sites;
Step 6, compares air line distance S and whether is greater than arrival reminding critical distance S0, if so, then perform step 8; If not then performing step 7;
Step 7, if air line distance S is not more than arrival reminding critical distance S0, mobile phone terminal vibrating alert passenger getting off car, then terminates;
Step 8, otherwise calculate bus fastest to reaching target endpoint time T=S/Vmax;
Step 9, suspends GPS location;
Step 10, after bus travels T time, recovers GPS location, regains current bus location coordinate and forward step 5 to, until complete this arrival reminding.
2. the low power-consumption intelligent public transport arrival reminding method for mobile phone terminal according to claim 1, is characterized in that, described bus maximum average velocity Vmax obtains according to the statistics of the multi-period maximum average velocity of many, city bus.
3. the low power-consumption intelligent public transport arrival reminding method for mobile phone terminal according to claim 1, is characterized in that, described arrival reminding critical distance S
0value is be less than the minor increment on this circuit between adjacent two websites, is greater than the half of the minor increment on this circuit between adjacent two websites.
4. the low power-consumption intelligent public transport arrival reminding method for mobile phone terminal according to claim 1, is characterized in that, described mobile phone terminal is furnished with GPS module and wireless network data transceiver module and as client; Server end has the database of bus station information; Both client and server ends are set up by wireless network and are connected.
5. the low power-consumption intelligent public transport arrival reminding method for mobile phone terminal according to claim 1, it is characterized in that, described client deployment low-power consumption public transport arrival reminding algorithm, is automatically located by client GPS, and utilizes the site information in database to complete arrival reminding, server end comprises WebServices interface, utilizes WebClient technology request msg, comprises data upload requests strategy and data download request strategy, data upload requests strategy creates background thread in client, and uses self-defining Uploader type in background thread, together with information such as public transport state and public bus network IDs uploads onto the server after the position obtained is converted to map reference by GPS, upload a secondary data every certain time interval, stop terminating upload request until user clicks, data download request strategy creates background thread in client equally, and use self-defining Downloader type in background thread, public bus network ID to be uploaded onto the server end, server does corresponding inquiry according to concrete public bus network ID and after screening calculates, data list is turned back to client, client receives information, it is corresponding Bus information list of entities by these information analysis, client map shows, for making data, there is real-time, also a latest data is downloaded at interval at regular intervals, stop terminating download request until user clicks.
6. the low power-consumption intelligent public transport arrival reminding method for mobile phone terminal according to claim 1, it is characterized in that, described server end disposes the database having bus station information, and server end utilizes WCF technology, creates the WebService based on Rest style; Web service uses LINQToSQL technology and SQLServer database alternately, and service arrangement, on IIS, externally uses Internet access; Service inside provides memory interface and query interface, and memory interface is defined as POST request, and query interface is defined as GET request; It is LINQToSQL entity type that memory interface to receive convert information such as public transport positions after request, and wherein creation-time attribute is unified adopts server current time; Database carries out data storage after receiving submiting command; After query interface receives external request, with public bus network ID for query argument, search algorithm extracts this circuit public transport data list in database within the scope of certain hour according to public bus network ID, filter public transport data list, the actual public transport position obtaining this circuit bus returns to client.
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