CN101950488A - Automatic judgment method of bus running direction and distance from starting station based on line path table - Google Patents
Automatic judgment method of bus running direction and distance from starting station based on line path table Download PDFInfo
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- CN101950488A CN101950488A CN 201010286414 CN201010286414A CN101950488A CN 101950488 A CN101950488 A CN 101950488A CN 201010286414 CN201010286414 CN 201010286414 CN 201010286414 A CN201010286414 A CN 201010286414A CN 101950488 A CN101950488 A CN 101950488A
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Abstract
An algorithm for bus running direction and distance from the starting station based on a line path table is characterized by describing the paths of the lines with N-numbered quadrilateral frames marked with frame number order and drawing the quadrilateral frames along the paths by following the principles of about 20m left at the two sides of the line in the width direction and minimum error in the length direction; according to the GPS information of the bus at a time, including longitude and latitude, direction and speed, firstly judging which quadrilateral frame the bus is in at present according to the longitude and latitude, thus obtaining the frame number which is not unique, then judging whether the quadrilateral frame is up or down according to the direction (up or down can not be uniquely determined according to the longitude and latitude data, and combination with the GPS direction information is a must), thus obtaining the unique quadrilateral frame number according to the GPS longitude and latitude and direction; computing the distance from the bus to the starting station according to the quadrilateral frame number; and computing the distance from the bus to each station according to the distance from the bus to the starting station and in combination with the distances from other stations to the starting station.
Description
Technical field
The present invention relates to reach from the starting station apart from determination methods, especially based on the public transit vehicle traffic direction of line route table and from starting station distance algorithm based on the vehicle operating direction of GPS.
Background technology
In the prior art based on the vehicle operating direction of GPS and in the range estimation method of the starting station, need to be provided with some platforms collection point, the collection point is located at the central authorities of platform, the vehicle departures are judged will be according to two conditions, vehicle is more and more far away apart from the collection point, and greater than L2, have only first condition that when vehicle is crossed platform central authorities, just satisfies vehicle, up: if leave for the terminus, for up from starting point; Otherwise be descending.The up number of times of accumulative total adopts an integer variable record in the program, it has shown that the current driving direction is up weighted value, if this numerical value is greater than adding up descending number of times, then program thinks that vehicle is in uplink state.
The method that up-downgoing is judged: when soon entering the station prompting, will judge that just now in the driving process be more and more near from originating station or terminus, thereby judge up-downgoing.
Program keeps 10 nearest GPS positions and is numbered in the GPS buffer zone, per three seconds keep once, and it is not 0 that the numeral of preservation requires speed, as is 0 not preserve.Be numbered, wherein the time of No. 1 point record the earliest, No. 10 point is from nearest point of current time, if up,, find out that minimum website of distance then with GPS position and No. 10 point computed ranges of all websites in the uplink, if this distance is smaller or equal to 50 meters, and entering the station recently is not this website, then should enter the station and seize newspaper, and record enters the station recently and is this website.Or vehicle and certain enter the station a little distance less than 30 meters, and this moment vehicle position angle and the angle between a little the position angle of entering the station when spending less than 60, if this moment, the position angle of vehicle was certain point of uplink, be in up by vehicle, vehicle current location of calculating in per 2 seconds and all go out the distance between the website, when vehicle and certain go out distance between the website less than 50 meters, then relatively whether current position angle and this angle that sets off between the puff position angle of vehicle spends less than 60, as less than 60 degree, report.After being disturbed, said method redundance height and GPS work makes mistakes easily.
CN101256717 quick public transport vehicle location and traffic signal control method and device based on a GPS, use is installed in car-mounted device on the BRT vehicle obtains the BRT vehicle by GPS positional information, location information data is transferred to the ground that is installed in the traffic signal controlling machine by onboard wireless radio frequency module to be received and treating apparatus, ground receiving and processing device computed range and vehicle heading information, and transmit data to traffic signal controlling machine by serial line interface RS232, carry out intersection traffic signal control by traffic signal controlling machine according to vehicle distances and vehicle heading information, obtain the more specific location information at BRT vehicle place in real time by the GPS module in the described car-mounted device, positional information is transferred to ground by onboard wireless radio frequency module to be received and treating apparatus, by the ground MCU module in ground reception and the treating apparatus active data information is extracted and handled, calculate the coordinate of BRT vehicle, crossing distance and vehicle heading, then these data messages are transferred to traffic signal controlling machine by serial line interface RS232, the RF wireless transport module of car-mounted device is real-time, automatically send data to ground and receive and treating apparatus, and carry out the processing that wireless data avoids conflict; After ground receives and treating apparatus receives the information that onboard wireless radio frequency module sends, the information that receives is at first confirmed, calculate by 2 positions then BRT vehicle location and traffic signal controlling machine, determine position, the crossing distance of BRT vehicle, through repeatedly calculating to the certain hour interval, determine these multidate informations of travel direction of vehicle, switch traffic lights according to above-mentioned information in time, exactly by traffic signal controlling machine, guarantee BRT vehicle priority pass.When position judgment, still need platform or ground receiving equipment as judging basic point.
In a word, only be longitude and latitude, direction (0 ~ 360) data that provide according to GPS, can't accurately judge public transit vehicle traffic direction (upstream or downstream), also can't calculate and from starting station distance, and from the distance of each website, and above-mentioned judgement and calculating are the bases of intelligent bus dispatching.Different with the common vehicle vehicle line, travel himself characteristics of public transit vehicle, that public transport cruising circuit that is exactly certain bar circuit is fixed.
Summary of the invention
The present invention seeks to propose a kind of public transit vehicle traffic direction based on the line route table reaches from the starting station apart from determination methods, basic ideas are: the method that the cruising circuit is adopted the line route description list, make up the essential information of circuit, the longitude and latitude that provides by vehicle GPS, direction (0 ~ 360 degree) data, add specific determination methods, can realize the automatic judgement of public transit vehicle traffic direction, calculate the distance of vehicle in real time from the starting station, and, provide guarantee for realizing reasonable automatic scheduling from the distance of each website.
Technical solution of the present invention is: based on the public transit vehicle traffic direction of line route table and from starting station distance algorithm, based on the public transit vehicle traffic direction of line route table and be achieved as follows apart from determination methods from the starting station:
The path of circuit is described: draw quadrilateral frame (for example Fig. 1 midway in No. 23) along the path with the quadrilateral frame of frame sequence notation with N, as shown in Figure 1, thick line is certain circuit Actual path, principle (1) Width that quadrilateral frame is drawn: the circuit both sides are stayed about 20 meters, length direction: the minimum principle of error, be that straight-line segment can be grown, bent (folding) line is short as far as possible.
(1) according to above-mentioned quadrilateral frame and be used to describe the routing table of circuit with the frame sequential build, the routing table of structure exists in the database.Every the circuit operation has both direction, and promptly up (starting station is a main website) and descending (starting station is the terminus for secondary station), every circuit needs two routing tables like this;
(2) make up to describe the information table of each website, comprise name of station,, be embodied as database from information such as starting station distances;
(3) according to vehicle GPS information (longitude and latitude, direction, speed etc.) sometime, at first judge by longitude and latitude which quadrilateral frame present vehicle drops on and (promptly obtain frame number, not exclusive), judge it is up quadrilateral frame or descending quadrilateral frame (can not uniquely determine up or descending, must in conjunction with the GPS directional information) according to the GPS direction again according to the longitude and latitude data.Can obtain unique quadrilateral frame number according to GPS longitude and latitude, direction like this;
(4) according to the quadrilateral frame that obtains number, calculate vehicle from starting station distance;
(5) according to vehicle from starting station distance, in conjunction with the range information of website, calculate the distance of vehicle from each website from the starting station.
The invention has the beneficial effects as follows: with N the path of describing circuit with the quadrilateral frame of frame sequence notation, thereby carry out determination methods to the public transit vehicle traffic direction and from starting station distance, and the essential information that makes up circuit forms database, longitude and latitude, direction (0 ~ 360) data that can provide by vehicle GPS so just, realize the automatic judgement of public transit vehicle traffic direction, calculate the distance of vehicle in real time from the starting station, and, provide guarantee for realizing reasonable automatic scheduling from the distance of each website.
Description of drawings
Fig. 1 is the present invention describes circuit with quadrilateral frame a path synoptic diagram.
Embodiment
As a public bus network 18 stations (together with starting point and terminal point) are arranged, from origin-to-destination and from the terminal point to the starting point each with the path of describing circuit respectively with 25 and 23 quadrilateral frames with the frame sequence notation: along path picture quadrilateral frame (for example Fig. 1 midway No. 23), as shown in Figure 1, thick line is certain circuit Actual path, principle (1) Width that quadrilateral frame is drawn: the circuit both sides are stayed about 20 meters, length direction: the minimum principle of error, be that straight-line segment can be grown, as it is short as far as possible to meet song (folding) line that turns round, under the situation of two stations, adopt following method: by some broken lines parcel actual tracks (this situation has been not a kind of quadrilateral of strictness just) by the circuit that turns round.
About the concrete application of the inventive method, mainly be to combine with GIS:
(1) in the line route table, each frame has the coordinate (longitude and latitude) on its four summits and corresponding direction (to represent with angular range, consistent with the definition of GPS direction, northwards be 0 degree), also have frame to finish the range information of the intersection point of limit and circuit simultaneously from the starting station;
(2) like this according to certain moment vehicle GPS information (longitude and latitude, direction), just can judge vehicle and drop on which unique frame, and then can calculate vehicle from starting station distance.
Claims (1)
1. based on the public transit vehicle traffic direction of line route table and from starting station distance algorithm, it is characterized in that the individual path of describing circuit with the quadrilateral frame of frame sequence notation: draw quadrilateral frame along the path with N, the principle that quadrilateral frame is drawn is: Width: the circuit both sides are stayed about 20 meters, length direction: the minimum principle of error, be that straight-line segment can be grown, curve or broken line are short as far as possible;
According to above-mentioned quadrilateral frame and be used to describe the routing table of circuit with the frame sequential build, the routing table of structure exists in the database; Every the circuit operation has both direction, and promptly up, the starting station is that the main website and descending, the starting station are the terminus for secondary station, like this two routing tables of every circuit needs;
⑵ make up the information table of describing each website, is embodied as database;
⑶ basis is vehicle GPS information sometime, comprise longitude and latitude, direction and speed, at first judge by longitude and latitude which quadrilateral frame present vehicle drops on, promptly obtain frame number, not exclusive, again according to direction judge be up quadrilateral frame or descending quadrilateral frame (can not uniquely determine according to the longitude and latitude data up or descending, must be in conjunction with the GPS directional information, can obtain unique quadrilateral frame number according to GPS longitude and latitude, direction like this;
⑷ calculate vehicle from starting station distance according to the quadrilateral frame that obtains number;
⑸ from starting station distance, in conjunction with the range information of website from the starting station, calculate the distance of vehicle from each website according to vehicle.
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104462384A (en) * | 2014-12-10 | 2015-03-25 | 上海新干通通信设备有限公司 | GPS database establishing method and locomotive wireless communication system based on database |
CN106199669A (en) * | 2015-05-06 | 2016-12-07 | 北京掌城科技有限公司 | A kind of method and device analyzing public transit vehicle running based on GPS track |
CN106355931A (en) * | 2016-10-11 | 2017-01-25 | 北京工业大学 | Bus time-distance data acquisition method and server |
CN107180538A (en) * | 2017-06-21 | 2017-09-19 | 南京邮电大学 | A kind of recognition methods of vehicle-mounted track traffic direction |
CN107742434A (en) * | 2017-10-10 | 2018-02-27 | 郑州天迈科技股份有限公司 | For website automatic testing method of the public transit vehicle during railroad embankment |
CN108922211A (en) * | 2018-06-20 | 2018-11-30 | 长安大学 | Consider that the BRT bus rider speed of website, signal lamp and front truck constraint optimizes recommended method |
CN109767638A (en) * | 2018-12-17 | 2019-05-17 | 北京百度网讯科技有限公司 | Control method for vehicle, device, equipment and computer readable storage medium |
CN110085048A (en) * | 2019-06-04 | 2019-08-02 | 湖南智慧畅行交通科技有限公司 | A kind of bus based on GPS data arrives point calculating method leaving from station in real time |
CN113613176A (en) * | 2021-07-27 | 2021-11-05 | 青岛海信网络科技股份有限公司 | Positioning method and device for public transport vehicle |
CN114758516A (en) * | 2022-04-14 | 2022-07-15 | 安徽超远信息技术有限公司 | Intelligent traffic signal control method for preferential passage of bus |
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CN101334288A (en) * | 2008-08-07 | 2008-12-31 | 北京工业大学 | Public transport bus exact stop method based on standard line matching |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104462384A (en) * | 2014-12-10 | 2015-03-25 | 上海新干通通信设备有限公司 | GPS database establishing method and locomotive wireless communication system based on database |
CN104462384B (en) * | 2014-12-10 | 2017-12-29 | 通号通信信息集团上海有限公司 | Gps data base construction method and the locomotive wireless communication system based on the database |
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CN106199669A (en) * | 2015-05-06 | 2016-12-07 | 北京掌城科技有限公司 | A kind of method and device analyzing public transit vehicle running based on GPS track |
CN106355931A (en) * | 2016-10-11 | 2017-01-25 | 北京工业大学 | Bus time-distance data acquisition method and server |
CN107180538A (en) * | 2017-06-21 | 2017-09-19 | 南京邮电大学 | A kind of recognition methods of vehicle-mounted track traffic direction |
CN107180538B (en) * | 2017-06-21 | 2019-10-22 | 南京邮电大学 | A kind of recognition methods of vehicle-mounted track traffic direction |
CN107742434A (en) * | 2017-10-10 | 2018-02-27 | 郑州天迈科技股份有限公司 | For website automatic testing method of the public transit vehicle during railroad embankment |
CN108922211A (en) * | 2018-06-20 | 2018-11-30 | 长安大学 | Consider that the BRT bus rider speed of website, signal lamp and front truck constraint optimizes recommended method |
CN109767638A (en) * | 2018-12-17 | 2019-05-17 | 北京百度网讯科技有限公司 | Control method for vehicle, device, equipment and computer readable storage medium |
CN110085048A (en) * | 2019-06-04 | 2019-08-02 | 湖南智慧畅行交通科技有限公司 | A kind of bus based on GPS data arrives point calculating method leaving from station in real time |
CN113613176A (en) * | 2021-07-27 | 2021-11-05 | 青岛海信网络科技股份有限公司 | Positioning method and device for public transport vehicle |
CN113613176B (en) * | 2021-07-27 | 2024-05-17 | 青岛海信网络科技股份有限公司 | Positioning method and equipment for bus |
CN114758516A (en) * | 2022-04-14 | 2022-07-15 | 安徽超远信息技术有限公司 | Intelligent traffic signal control method for preferential passage of bus |
CN114758516B (en) * | 2022-04-14 | 2023-02-21 | 安徽超远信息技术有限公司 | Intelligent traffic signal control method for prior bus passage |
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