CN111161534A - Public transport accurate OD data acquisition system and method based on WiFi probe - Google Patents

Public transport accurate OD data acquisition system and method based on WiFi probe Download PDF

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Publication number
CN111161534A
CN111161534A CN201911313224.7A CN201911313224A CN111161534A CN 111161534 A CN111161534 A CN 111161534A CN 201911313224 A CN201911313224 A CN 201911313224A CN 111161534 A CN111161534 A CN 111161534A
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station
mac address
bus
passenger
wifi probe
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韩晓春
周金明
其他发明人请求不公开姓名
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Nanjing Xingzheyi Intelligent Transportation Technology Co ltd
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Nanjing Xingzheyi Intelligent Transportation Technology Co ltd
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0125—Traffic data processing
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
    • G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
    • 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
    • G08G1/127—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 to a central station ; Indicators in a central station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183—Processing at user equipment or user record carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H04W8/205—Transfer to or from user equipment or user record carrier

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Databases & Information Systems (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention discloses a system and a method for acquiring bus accurate OD data based on a WiFi probe. Meanwhile, passengers getting on and off the bus are further filtered through the platform terminal and the platform WiFi probe collected platform passenger MAC addresses, the accuracy of passenger flow OD data is greatly improved, and an accurate data basis is provided for bus network optimization and intelligent scheduling.

Description

Public transport accurate OD data acquisition system and method based on WiFi probe
Technical Field
The application relates to the field of intelligent transportation, in particular to a system and a method for acquiring passenger flow OD data, and particularly relates to a system and a method for acquiring bus accurate OD data based on a WiFi probe.
Background
Under the current condition, urban traffic congestion is an important problem factor restricting urban sustainable development, public transportation is developed vigorously, public trip efficiency can be effectively improved, and urban traffic congestion is relieved. The method is used for acquiring real-time and complete accurate OD data of the bus passenger flow in a city, is the basis of designing and optimizing and adjusting a line network of a city bus line, and has important significance for implementing bus priority national policy. In the process of implementing the invention, the inventor finds that in the aspect of acquiring accurate OD data based on WiFi probe acquisition, at least the following problems exist in the prior art: the acquisition range of the WiFi probe is controlled by installing the directional antenna, so that the WiFi probe only acquires the MAC address of the passenger handheld device in the bus, and the directional antenna can not effectively isolate the MAC inside the bus and the MAC outside the bus in actual deployment and implementation, so that the OD data acquisition accuracy is low.
Disclosure of Invention
In order to overcome the defects of the prior art, the embodiment of the disclosure provides a system and a method for acquiring bus accurate OD data based on a WiFi probe, which can improve the accuracy of OD data acquisition and provide an accurate data base for bus network optimization and intelligent scheduling. The technical scheme is as follows:
the first aspect provides a public transit accurate OD data acquisition system based on WiFi probe, and the system comprises a cloud server, a vehicle-mounted terminal, a WiFi probe A and a door opening and closing signal device
The vehicle-mounted terminal is electrically connected with the WiFi probe A and is installed in the bus, the WiFi probe A acquires MAC addresses of passengers in the bus and transmits the MAC addresses to the vehicle-mounted terminal, and the vehicle-mounted terminal wirelessly transmits the MAC addresses and the time of the passengers in the bus to the cloud server;
the vehicle-mounted terminal is electrically connected with the door opening and closing signal device, and a GPS module of the vehicle-mounted terminal acquires the GPS position and the time of the bus when the bus is opened and uploads the GPS position and the time to the cloud server;
the vehicle-mounted terminal triggers whether the WiFi probe A stops or starts to collect the MAC address according to the door opening and closing signal, when the door opening signal is received, the WiFi probe A stops collecting the MAC address of the passenger in the vehicle, and when the door closing signal is received, the WiFi probe A starts to collect the MAC address of the passenger in the vehicle;
the cloud server is used for analyzing and obtaining passenger flow OD data, and specifically comprises the following steps:
matching the GPS position with stations in a public transportation network,
recording an MAC address set collected between the door opening and closing signals of two adjacent stations as D for data uploaded by the same vehicle-mounted terminal;
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is denoted as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is denoted as D2, that is, the MAC address sets of all boarding passengers of the station B are D2-D1 (the D2-D1 indicate MAC addresses belonging to the set D2 but not belonging to the set D1), the MAC address sets of all alighting passengers of the station B are D1-D2, for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger of the head station, and for the end station, the MAC address set acquired between the door closing signal of the end station and the last station is the MAC address set of the diseghting passenger of the end station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals.
Preferably, the door opening and closing signal device can be replaced by a door opening and closing detection module in the vehicle-mounted terminal.
Preferably, the MAC address set collected between the door opening and closing signals of the two adjacent stations is recorded as D, specifically, the MAC addresses collected with the times less than 0-90% of the total times are filtered out, and the remaining MAC address set is recorded as D.
Preferably, the system further comprises a station terminal and a WiFi probe B,
the platform terminal and the WiFi probe B are respectively installed at a bus platform, the WiFi probe B acquires the platform passenger MAC address, the acquisition range of the platform passenger MAC address can cover the whole area of the platform where the platform is located, the platform terminal is electrically connected with the WiFi probe B, and the WiFi probe B wirelessly transmits the platform passenger MAC address, the time and the station to the cloud server through the platform terminal;
the cloud server is used for analyzing and obtaining passenger flow OD data, and further comprises the following steps of filtering MAC address sets of passengers getting on and off the bus, and specifically comprises the following steps:
according to the MAC address set M1 within 0-3 min before the door opening time of a certain station and the MAC address set M2 within 0-3 min after the door opening time of the certain station, obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
Further, WiFi probe B passes through platform terminal to the wireless transmission platform passenger MAC address of high in the clouds server and its time, website, specifically is: and the platform terminal acquires the door opening time of the bus at the station from the cloud server, and collects the platform MAC addresses which are acquired by the WiFi probe B and are within 0-3 min before and after the door opening time, and the platform MAC addresses and the stations are wirelessly transmitted to the cloud server through the platform terminal.
Preferably, the cloud server is connected with a bus dispatching system to acquire bus operation information in real time, wherein the bus operation information comprises vehicles, lines, stops of the lines and line directions; and associating the line and the direction of the vehicle through the time and the station sequence to obtain the line and the direction of the passenger flow OD data.
In a second aspect, a method for acquiring bus accurate OD data based on a WiFi probe is provided, which includes the following steps:
the method comprises the steps that MAC addresses of passengers in the bus are collected through a WiFi probe A, when a door opening signal is given, the WiFi probe A stops collecting the MAC addresses of the passengers in the bus, and when a door closing signal is given, the WiFi probe A starts collecting the MAC addresses of the passengers in the bus; the MAC address and the time of the passenger in the vehicle are wirelessly transmitted to a cloud server through a vehicle-mounted terminal;
the method comprises the steps that a GPS position and time of a bus when a door is opened are obtained through a GPS module of a vehicle-mounted terminal and uploaded to a cloud server;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, specifically:
matching the GPS position with stations in a public transportation network,
recording an MAC address set collected between the door opening and closing signals of two adjacent stations as D for data uploaded by the same vehicle-mounted terminal;
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is recorded as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is recorded as D2, that is, the MAC address sets of all the boarding passengers of the station B are D2-D1, the MAC address sets of all the alighting passengers of the station B are D1-D2, for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger at the head station, and for the tail station, the MAC address set acquired between the door closing signal of the tail station and the previous station is the MAC address set of the disembarking passenger at the tail station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals.
Preferably, the MAC address set collected between the door opening and closing signals of the two adjacent stations is recorded as D, specifically, the MAC addresses collected with the times less than 0-90% of the total times are filtered out, and the remaining MAC address set is recorded as D.
Preferably, the method further comprises:
the method comprises the steps that a WiFi probe B installed at a bus station is used for collecting a station passenger MAC address, the collection range of the station passenger MAC address can cover the whole area of the station, and the station passenger MAC address, the time of the station passenger MAC address and the station are wirelessly transmitted to a cloud server through a station terminal;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, and further comprising filtering MAC address sets of passengers getting on and off the bus, specifically:
according to the MAC address set M1 within 0-3 min before the door opening time of a certain station and the MAC address set M2 within 0-3 min after the door opening time of the certain station, obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
Preferably, through installing the wiFi probe B of bus stop department, gather platform passenger MAC address, specifically do: the door opening time of the bus at the station is obtained from the cloud server through the station terminal, and the station MAC addresses collected by the WiFi probe B in the time period before and after the door opening time are collected and are wirelessly transmitted to the cloud server through the station terminal together with the station.
Compared with the prior art, one of the technical schemes has the following beneficial effects:
according to the technical scheme, the MAC addresses of passengers in buses at different angles are acquired through the WiFi probe, and the data of the OD of the whole urban bus station are accurately acquired in real time through analysis of the server and comprise the bus passenger flow OD of a single line and the cross-line transfer passenger flow OD. Meanwhile, passengers getting on and off the bus are further filtered through the platform terminal and the platform WiFi probe acquired platform passenger MAC addresses, so that the accuracy of passenger flow OD data is greatly improved, and an accurate data basis is provided for bus network optimization and intelligent scheduling; meanwhile, the deployment is relatively simple, no special requirement is required on the WiFi probe, and the WiFi probe is easy to maintain and popularize.
Drawings
Fig. 1 is a schematic diagram of a system for acquiring accurate OD data of a bus based on a WiFi probe according to an embodiment of the present disclosure.
Detailed Description
In order to clarify the technical solution and the working principle of the present invention, the embodiments of the present disclosure will be described in further detail with reference to the accompanying drawings. All the above optional technical solutions may be combined arbitrarily to form the optional embodiments of the present disclosure, and are not described herein again.
In the present embodiment, the bus includes but is not limited to a bus of a public transport company, and may also be an enterprise shift, a bus, a subway, and the like that use a similar operation mode as the bus.
In a first aspect: the embodiment of the disclosure provides a public transportation accurate OD data acquisition system based on a WiFi probe, and an attached figure 1 is a schematic diagram of a public transportation accurate OD data acquisition system based on the WiFi probe provided by the embodiment of the disclosure. In combination with the figure, the system comprises a cloud server, a vehicle-mounted terminal, a WiFi probe A and a door opening and closing signal device (preferably, the door opening and closing signal device can be replaced by a door opening and closing detection module in the vehicle-mounted terminal)
The vehicle-mounted terminal is electrically connected with the WiFi probe A (the platform terminal and the WiFi probe are directly connected through hardware communication interfaces) and are both installed in the bus, the WiFi probe A acquires the MAC address of a passenger in the bus and ensures that the passenger can cover the whole area in the bus (namely at least 1 WiFi probe A is connected, and the number of the specifically connected probes is based on the space area of the bus), and the WiFi probe A wirelessly transmits the MAC address of the passenger in the bus and the time of the passenger to the cloud server through the vehicle-mounted terminal; namely, the WiFi probe firstly transmits the collected MAC to the platform terminal, and the platform terminal wirelessly sends the MAC to the cloud server.
The vehicle-mounted terminal is electrically connected with the door opening and closing signal device, and a GPS module of the vehicle-mounted terminal acquires the GPS position and the time of the bus when the bus is opened and uploads the GPS position and the time to the cloud server;
the vehicle-mounted terminal triggers whether the WiFi probe A stops or starts to collect the MAC address according to the door opening and closing signal, when the door opening signal is received, the WiFi probe A stops collecting the MAC address of the passenger in the vehicle, and when the door closing signal is received, the WiFi probe A starts to collect the MAC address of the passenger in the vehicle;
the cloud server is used for analyzing and obtaining passenger flow OD data, specifically
Matching the GPS position with stations in a public transportation network,
recording a set of MAC addresses collected between the door opening and closing signal devices of two adjacent stations as D for data uploaded by the same vehicle-mounted terminal;
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is denoted as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is denoted as D2, that is, the MAC address set of all boarding passengers of the station B is D2-D1 (the MAC address located in D2 but not in D1), the MAC address set of all alighting passengers of the station B is D1-D2 (the MAC address located in D1 but not in D2), for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger of the head station, and for the last station, the MAC address set acquired between the door closing signal of the last station and the diseghting passenger of the last station is the MAC address set of the alighting passenger of the last station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals; (e.g., get-on A from station A, 07:00, get-off at station D, 07:30, get-on at station D, 07:35, get-off at station F, 07: 55)
In the driving process of the bus, the WiFi probe in the bus often acquires the MAC addresses of pedestrians in the vehicles beside or pedestrians on the roadside, preferably, in order to ensure the accuracy of the MAC address identification of passengers getting on or off the bus, the MAC address set acquired between the door opening and closing signal devices of two adjacent stations is marked as D, specifically, the MAC addresses acquired for times less than 70% of the total times are filtered, and the rest MAC address sets are marked as D; for example, the MAC address set collected between the door closing signal of the station a and the door opening signal of the station B is recorded as D1, the total number of collected MAC addresses is 20, and the number of times 10 MAC addresses are collected in the set D1 is less than 14, so that the 10 MAC addresses are considered to be collected outside the bus, that is, mobile phones carried by people going out of a pedestrian or a private car of the same row.
In the actual driving process, the condition that the vehicles are parallel frequently occurs, the private car and the bus are parallel, so that the WiFi probe can acquire the MAC address of personnel going out of the private car for many times, the influence of the personnel outside the bus can not be eliminated fundamentally only by filtering the number proportion of the acquired times of the MAC address, and the accuracy of the data of the passengers getting on or off the bus can be greatly improved by combining the condition of the passengers at the platform.
Preferably, the system further comprises a station terminal and a WiFi probe B,
the platform terminal and the WiFi probe B are respectively installed at a bus platform, the WiFi probe B collects the MAC address of a platform passenger, the collection range of the platform terminal and the WiFi probe B can cover the whole area of the platform where the platform is located (namely the platform is at least connected with 1 WiFi probe B, the actually connected probe quantity is based on the WiFi quantity capable of covering the current bus platform), the platform terminal is electrically connected with the WiFi probe B, and the WiFi probe B wirelessly transmits the MAC address of the platform passenger and the time and the station of the platform passenger to the cloud server through the platform terminal. To save transmission traffic, or to increase transmission rate: preferably, the WiFi probe B wirelessly transmits the station passenger MAC address, the time and the station of the station passenger MAC address to the cloud server through the station terminal, the station terminal acquires the door opening time of the bus at the station from the cloud server, and the station MAC address sets within 1min before and after the door opening time acquired by the WiFi probe B are wirelessly transmitted to the cloud server through the station terminal together with the station;
the cloud server is used for analyzing and obtaining passenger flow OD data, and further comprises the following steps of filtering MAC address sets of passengers getting on and off the bus, and specifically comprises the following steps:
according to the MAC address set M1 within 1min before the opening time of a certain station (station B) and the MAC address set M2 within 1min after the opening time of the certain station (station B), obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
Preferably, the cloud server is connected with a bus dispatching system to acquire bus operation information in real time, wherein the bus operation information comprises vehicles, lines, stops of the lines and line directions (uplink and downlink); and associating the line and the direction of the vehicle through the time and the station sequence to obtain the line and the direction of the passenger flow OD data. As shown in tables 1 and 2;
table 1 single line passenger flow OD data relating line and direction;
Figure BDA0002325103650000071
Figure BDA0002325103650000081
table 2 cross-line traffic OD data correlating line and direction
Figure BDA0002325103650000082
Preferably, the cloud server wirelessly transmits the bus operation information to the vehicle-mounted terminal, and broadcasts or displays the task of the shift through the vehicle-mounted terminal.
In a second aspect, an embodiment of the present disclosure provides a method for acquiring bus accurate OD data based on a WiFi probe, the method including the following steps:
the method comprises the steps that MAC addresses of passengers in the bus are collected through a WiFi probe A, when a door opening signal is given, the WiFi probe A stops collecting the MAC addresses of the passengers in the bus, and when a door closing signal is given, the WiFi probe A starts collecting the MAC addresses of the passengers in the bus; the MAC address and the time of the passenger in the vehicle are wirelessly transmitted to a cloud server through a vehicle-mounted terminal;
the method comprises the steps that a GPS position and time of a bus when a door is opened are obtained through a GPS module of a vehicle-mounted terminal and uploaded to a cloud server;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, specifically:
matching the GPS position with stations in a public transportation network,
recording an MAC address set collected between the door opening and closing signals of two adjacent stations as D for data uploaded by the same vehicle-mounted terminal;
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is recorded as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is recorded as D2, that is, the MAC address sets of all the boarding passengers of the station B are D2-D1, the MAC address sets of all the alighting passengers of the station B are D1-D2, for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger at the head station, and for the tail station, the MAC address set acquired between the door closing signal of the tail station and the previous station is the MAC address set of the disembarking passenger at the tail station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals.
Preferably, the MAC address set collected between the door opening and closing signals of the two adjacent stations is recorded as D, specifically, the MAC addresses collected with times less than 70% of the total times are filtered out, and the remaining MAC address set is recorded as D.
Preferably, the method further comprises:
the method comprises the steps that a WiFi probe B installed at a bus station is used for collecting a station passenger MAC address, the collection range of the station passenger MAC address can cover the whole area of the station, and the station passenger MAC address, the time of the station passenger MAC address and the station are wirelessly transmitted to a cloud server through a station terminal;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, and further comprising filtering MAC address sets of passengers getting on and off the bus, specifically:
according to the MAC address set M1 within 1min before the door opening time of a certain station and the MAC address set M2 within 1min after the door opening time of the certain station, obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
Preferably, through installing the wiFi probe B of bus stop department, gather platform passenger MAC address, specifically do: the door opening time of the bus at the station is obtained from the cloud server through the station terminal, and the station MAC addresses collected by the WiFi probe B within 1min before and after the door opening time are collected together with the station and are wirelessly transmitted to the cloud server through the station terminal.
It should be noted that the method for acquiring the bus precision OD data based on the WiFi probe provided in the above embodiments is based on a system for acquiring the bus precision OD data based on the WiFi probe,
the embodiment of the method for acquiring the bus accurate OD data based on the WiFi probe and the embodiment of the system for acquiring the bus accurate OD data based on the WiFi probe provided by the above embodiments belong to the same concept, and the specific implementation process is detailed in the system embodiment and is not described herein again.
In a third aspect, an embodiment of the present disclosure provides another method or system for acquiring bus accurate OD data based on a WiFi probe, which is different from the first or second aspect: the method for analyzing and obtaining the passenger flow OD data by the cloud server specifically comprises the following steps:
the cloud server is connected with a dispatching system of a bus company to acquire the current operation information of each bus in real time, wherein the operation information comprises the line information of the operation shift, the direction of the operation line and the GPS position of each station in the line. After the operation information of the bus is obtained, the cloud server issues the operation information through the wireless communication module of the vehicle-mounted terminal. The bus-mounted terminal collects the MAC address of the wireless equipment held by the pedestrian at the bus door through the WiFi probe installed at each bus door after receiving the door opening signal of the vehicle through the door opening and closing signal communication module, and stops collecting the MAC address of the wireless equipment held by the pedestrian at the bus door after receiving the door closing signal of the vehicle. Meanwhile, the vehicle-mounted terminal calculates the current bus stop by combining the received line information, the line direction and the GPS position of each stop of the line through the GPS module. And finally, uploading the acquired MAC address, time, line information, line direction, site position, shift start time and shift end time to a cloud server during each door opening period. As shown in table 3
TABLE 3 data List obtained during opening and closing of the door
Vehicle number 15430
MAC identification 3A4E598H981347
Time of acquisition 2019-04-02 10:02:24
Service line 12-way street
Direction of operation Uplink is carried out
Operation site West canal
Time of shift 09:30:00
End of shift time 10:20:00
The system is deployed at a bus stop terminal, and uploads the acquired MAC address to a cloud server at regular time, wherein the MAC address, the acquired time and the name of the bus stop are included.
Table 4 data list uploaded by station terminal
MAC identification 3A4E598H981347
Time of acquisition 2019-04-02 10:01:24
Platform name West canal
The passengers taking the bus at the end of the shift at the latestAnd (4) getting off the bus at the station, namely, the getting off time of the passenger is before the end time of the shift. Therefore, the cloud server divides all data uploaded by the vehicle-mounted terminal according to the vehicle number and the shift time to form mutually independent data sets. For data in a certain shift of a certain vehicle, recording the start time of the shift as TstartThe time of the end of the shift is TendData set D uploaded by vehicle-mounted terminal during shiftbusThe time period of the shift [ Tstart,Tend]Data set D uploaded by intelligent terminal of station where vehicle passesplatform. Step 1, filtering out at DbusBut not in DplatformThe interference of MAC data of pedestrians not taking the bus is removed from the data appearing in the process, and the filtered data set is recorded as
Figure BDA0002325103650000111
Step 2, for the data set
Figure BDA0002325103650000112
The data only 1 and the data with the starting and ending time less than 3 minutes (the time of the vehicle driving 1 station is usually not less than 3 minutes) are filtered, and the filtered data set is recorded as
Figure BDA0002325103650000113
Step 3, for
Figure BDA0002325103650000114
The first appearance time and the last appearance time of each MAC are found, that is, the OD information of the passenger at the station on the line can be obtained.
MAC identification 3A4E598H981347
Riding line 12-way street
Direction of the line Uplink is carried out
Time of getting on bus 2019-04-02 10:02:24
Getting-on station West canal
Time of alighting 2019-04-02 10:41:49
Get-off station Guangling road
For all bus lines in a city, the server stores collection stations between every two bus lines in advance, namely, bus passengers may have the behavior of bus line transfer at the stations. After collecting the OD data of all the vehicles at the station in each shift, the server associates the data of getting-on at a certain transfer station according to MAC within 15 minutes, so as to collect the transfer OD data of the bus passengers, and collects the complete bus station OD data of the passengers on multiple lines generating transfer behavior based on the associated transfer OD data.
The invention has been described above by way of example with reference to the accompanying drawings, it being understood that the invention is not limited to the specific embodiments described above, but is capable of numerous insubstantial modifications when implemented in accordance with the principles and solutions of the present invention; or directly apply the conception and the technical scheme of the invention to other occasions without improvement and equivalent replacement, and the invention is within the protection scope of the invention.

Claims (10)

1. A public transportation accurate OD data acquisition system based on a WiFi probe is characterized by comprising a cloud server, a vehicle-mounted terminal, a WiFi probe A and a door opening and closing signal device,
the vehicle-mounted terminal is electrically connected with the WiFi probe A and is installed in the bus, the WiFi probe A acquires MAC addresses of passengers in the bus and transmits the MAC addresses to the vehicle-mounted terminal, and the vehicle-mounted terminal wirelessly transmits the MAC addresses and the time of the passengers in the bus to the cloud server;
the vehicle-mounted terminal is electrically connected with the door opening and closing signal device, and a GPS module of the vehicle-mounted terminal acquires the GPS position and the time of the bus when the bus is opened and uploads the GPS position and the time to the cloud server;
the vehicle-mounted terminal triggers whether the WiFi probe A stops or starts to collect the MAC address according to the door opening and closing signal, when the door opening signal is received, the WiFi probe A stops collecting the MAC address of the passenger in the vehicle, and when the door closing signal is received, the WiFi probe A starts to collect the MAC address of the passenger in the vehicle;
the cloud server is used for analyzing and obtaining passenger flow OD data, and specifically comprises the following steps:
matching the GPS position with stations in a public transportation network,
for the data uploaded by the same vehicle-mounted terminal, the MAC address set collected between the door opening and closing signals of two adjacent stations is recorded as D, specifically,
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is recorded as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is recorded as D2, that is, the MAC address sets of all the boarding passengers of the station B are D2-D1, the MAC address sets of all the alighting passengers of the station B are D1-D2, for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger at the head station, and for the tail station, the MAC address set acquired between the door closing signal of the tail station and the previous station is the MAC address set of the disembarking passenger at the tail station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals.
2. The system for acquiring accurate OD data of the bus based on the WiFi probe as claimed in claim 1, wherein the door opening and closing signal device can be replaced by a door opening and closing detection module inside the vehicle-mounted terminal.
3. The system for acquiring accurate OD data of the bus based on the WiFi probe as claimed in claim 1, wherein the MAC address set acquired between the door opening and closing signals of two adjacent stations is recorded as D, specifically, MAC addresses acquired for times less than 0-90% of the total times are filtered out, and the remaining MAC address set is recorded as D.
4. The system for acquiring bus precision OD data based on WiFi probe as claimed in claim 1, further comprising a station terminal and a WiFi probe B,
the platform terminal and the WiFi probe B are respectively installed at a bus platform, the WiFi probe B acquires the platform passenger MAC address, the acquisition range of the platform passenger MAC address can cover the whole area of the platform where the platform is located, the platform terminal is electrically connected with the WiFi probe B, and the WiFi probe B wirelessly transmits the platform passenger MAC address, the time and the station to the cloud server through the platform terminal;
the cloud server is used for analyzing and obtaining passenger flow OD data, and further comprises the following steps of filtering MAC address sets of passengers getting on and off the bus, and specifically comprises the following steps:
according to the MAC address set M1 within 0-3 min before the door opening time of a certain station and the MAC address set M2 within 0-3 min after the door opening time of the certain station, obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
5. The system for acquiring accurate OD data in buses based on the WiFi probe as claimed in claim 4, wherein the WiFi probe B wirelessly transmits the MAC address of the station passenger and the time and station thereof to the cloud server through the station terminal, and specifically comprises: and the platform terminal acquires the door opening time of the bus at the station from the cloud server, and collects the platform MAC addresses which are acquired by the WiFi probe B and are within 0-3 min before and after the door opening time, and the platform MAC addresses and the stations are wirelessly transmitted to the cloud server through the platform terminal.
6. The system for acquiring the bus accurate OD data based on the WiFi probe as claimed in any one of claims 1 to 5, wherein the cloud server is connected with a bus scheduling system to acquire bus operation information including vehicles, lines, stops of the lines and line directions in real time; and associating the line and the direction of the vehicle through the time and the station sequence to obtain the line and the direction of the passenger flow OD data.
7. A bus accurate OD data acquisition method based on a WiFi probe is characterized by comprising the following steps:
the method comprises the steps that MAC addresses of passengers in the bus are collected through a WiFi probe A, when a door opening signal is given, the WiFi probe A stops collecting the MAC addresses of the passengers in the bus, and when a door closing signal is given, the WiFi probe A starts collecting the MAC addresses of the passengers in the bus; the MAC address and the time of the passenger in the vehicle are wirelessly transmitted to a cloud server through a vehicle-mounted terminal;
the method comprises the steps that a GPS position and time of a bus when a door is opened are obtained through a GPS module of a vehicle-mounted terminal and uploaded to a cloud server;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, specifically:
matching the GPS position with stations in a public transportation network,
recording an MAC address set collected between the door opening and closing signals of two adjacent stations as D for data uploaded by the same vehicle-mounted terminal;
for any adjacent three stations A, B, C that the vehicle sequentially passes through, the MAC address set acquired between the door closing signal of the station a and the door opening signal of the station B is recorded as D1, the MAC address set acquired between the door closing signal of the station B and the door opening signal of the station C is recorded as D2, that is, the MAC address sets of all the boarding passengers of the station B are D2-D1, the MAC address sets of all the alighting passengers of the station B are D1-D2, for the head station, the MAC address set acquired between the door opening signal of the head station and the next station is the MAC address set of the boarding passenger at the head station, and for the tail station, the MAC address set acquired between the door closing signal of the tail station and the previous station is the MAC address set of the disembarking passenger at the tail station;
associating the passengers getting on the bus and the passengers getting off the bus according to the same MAC address to obtain passenger flow OD data, namely that a certain passenger with the unique MAC address identifier starts from a certain station at a certain time and arrives at the certain station at a certain time; the single-line passenger flow OD can be obtained according to the data of the same vehicle-mounted terminal, and the cross-line passenger flow OD can be obtained according to the data of different vehicle-mounted terminals.
8. The method for acquiring the bus accurate OD data based on the WiFi probe as claimed in claim 7, wherein an MAC address set acquired between the door opening and closing signals of two adjacent stations is recorded as D, specifically, MAC addresses acquired for times less than 0-90% of the total times are filtered out, and the remaining MAC address set is recorded as D.
9. The method for acquiring the bus accurate OD data based on the WiFi probe as recited in any one of claims 7 or 8, wherein the method further comprises:
the method comprises the steps that a WiFi probe B installed at a bus station is used for collecting a station passenger MAC address, the collection range of the station passenger MAC address can cover the whole area of the station, and the station passenger MAC address, the time of the station passenger MAC address and the station are wirelessly transmitted to a cloud server through a station terminal;
the method comprises the following steps of obtaining passenger flow OD data through cloud server analysis, and further comprising filtering MAC address sets of passengers getting on and off the bus, specifically:
according to the MAC address set M1 within 0-3 min before the door opening time of a certain station and the MAC address set M2 within 0-3 min after the door opening time of the certain station, obtaining:
the MAC addresses of all the boarding passengers at the station B are set D2-D1, and (D2-D1) is in the group (M1-M2), the MAC addresses of all the alighting passengers at the station B are set D1-D2, and (D1-D2) is in the group (M2-M1), and for the head station, the MAC address set of the boarding passengers at the head station is as follows: the MAC address set collected between the door opening signals of the first station and the next station belongs to M1 of the first station platform; for the end station, the MAC address set for the end station alighting passenger is: the set of MAC addresses collected between the closing signals of the end station and the station immediately above it, and belongs to M2 of the end station.
10. The method for acquiring accurate OD data of bus based on WiFi probe as claimed in claim 9, wherein the station passenger MAC address is acquired by WiFi probe B installed at bus station, specifically: the door opening time of the bus at the station is obtained from the cloud server through the station terminal, and the station MAC addresses collected by the WiFi probe B in the time period before and after the door opening time are collected and are wirelessly transmitted to the cloud server through the station terminal together with the station.
CN201911313224.7A 2019-12-19 2019-12-19 Public transport accurate OD data acquisition system and method based on WiFi probe Pending CN111161534A (en)

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