CN112581778A - Traffic signal intelligent guiding system based on bus priority mechanism - Google Patents
Traffic signal intelligent guiding system based on bus priority mechanism Download PDFInfo
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Abstract
The traffic signal intelligent guidance system based on the bus priority mechanism is applied to the fields of intelligent control of traffic signal lamps, intelligent city planning management, bus card swiping machine system and intelligent public traffic unmanned driving. In order to solve the problems that the existing intelligent transportation field lacks a signal lamp intelligent rotation mechanism based on the number of buses and the number of passengers, the existing intelligent city management field lacks an information system for realizing integrated management of a signal lamp system and a bus card swiping machine system, and the existing bus card swiping machine system lacks functions of calculating the number of the passengers and receiving the state of a signal lamp, the invention designs a traffic signal intelligent guidance system based on a bus priority mechanism, so that the intelligent control of the signal lamp system based on the bus and the passenger information is realized, the bus system and the signal lamp system are managed in a unified mode, and the bus card swiping machine system intelligently analyzes the passenger information.
Description
Technical Field
The traffic signal intelligent guidance system based on the bus priority mechanism is applied to the fields of intelligent control of traffic signal lamps, intelligent city planning management, bus card swiping machine system and intelligent public traffic unmanned driving.
Background
The invention discloses a traffic signal intelligent guidance system based on a bus priority mechanism, which aims to solve the problems that the existing intelligent transportation field lacks a signal lamp intelligent rotation mechanism based on the number of buses and the number of passengers, the existing intelligent city management field lacks an information system for realizing integrated management of a signal lamp system and a bus card swiping machine system, and the existing bus card swiping machine system lacks functions of calculating the number of the passengers and receiving the state of a signal lamp.
Disclosure of Invention
Traffic signal intelligence guides system based on bus priority mechanism, mainly by signal lamp system, bus machine for punching card system, remote center application system, remote center data system, signal lamp system and bus machine for punching card system's linkage mechanism (software) are constituteed, wherein signal lamp system mainly by intelligent signal lamp, the signal lamp, remote signal lamp data system, communication module, camera module, remote signal lamp application system constitutes, bus machine for punching card system mainly by on-vehicle end of punching card (by the collection module of punching card, GPS orientation module, 5G communication module, the antenna is constituteed), on-vehicle navigation end, camera module, remote bus data system, remote bus application system constitutes.
Bus card swiping machine system
The bus card swiping machine system collects the passenger getting-on record and getting-off record, and the number of the passengers is obtained by subtracting the number of the getting-on cards from the number of the getting-off cards.
The bus card swiping machine system is in real-time communication with the signal lamp system, the signal lamp system sends the signal lamp state to the bus card swiping machine system in real time, a vehicle-mounted navigation end of the bus card swiping machine system displays the signal lamp state, the number of passengers, the name of a station board in front, the distance of the station board in front and a GIS map, and the GIS map of the vehicle-mounted navigation end displays a driving planning route, information of the station board (coordinate position and station name) and a driving position (self coordinate position); the vehicle-mounted navigation end mainly comprises a mainboard, a processor, a controller, a memory, input and output equipment (keys, a display screen, a USB interface, a voice interface, a video interface and the like), an I/O channel, a communication chip, an antenna and a power supply, wherein a software system is installed, the vehicle-mounted navigation end is communicated with a remote bus application system through a wireless 5G interface protocol and a 5G base station, and is used for transmitting voice, video and bus position and passenger number data, and the video and voice data are transmitted to the remote bus application system and the remote bus data system in real time and finally stored in a file system of the remote bus data system; the position of the bus and the passenger number data are finally stored in a real-time database of a remote bus data system. The real-time calculation of the number of passengers is completed by a software system of a vehicle-mounted navigation terminal, and the sum of the records of one-time card swiping (getting on) of all the card numbers is subtracted by the sum of the records of two-time card swiping (getting off), namely the total number of the passengers. The vehicle-mounted navigation end is the brain of the single bus card swiping machine system and is responsible for software and hardware monitoring and management of the single bus card swiping machine system.
The bus card swiping machine system sends the vehicle position and the number of passengers to the signal lamp system, vehicle-mounted card swiping ends are respectively installed on an upper door and a lower door of a bus, a GPS and 5G communication module is installed at each vehicle-mounted card swiping end, and the vehicle body length and the position data of the bus are fitted based on the positioning data of the plurality of card swiping ends (for example, a front door and a rear door are respectively provided with the vehicle-mounted card swiping ends, the distance between the rear door card swiping end and the tail part of the vehicle body is approximate, the distance between the vehicle-mounted card swiping end of the front door and the head part of the vehicle body is approximate, two vehicle-mounted card swiping ends determine a straight line for two points, the two points extend towards the front and rear approximate values, and the final straight. The vehicle-mounted card swiping end mainly comprises a camera, an image processing chip, a radio frequency transceiver chip, an NFC chip, a single chip microcomputer, a control circuit, a cache, a memory, an encryption chip, an antenna and a power supply, card swiping information is identified through two-dimensional codes, IC radio frequency and NFC modes, the card swiping information is stored in the memory of the vehicle-mounted card swiping end and is transmitted to a vehicle-mounted navigation end and a remote bus application system in real time, the remote bus application system stores data in a remote bus data system, and the remote bus application system is responsible for accessing the remote bus data system. The vehicle-mounted card swiping end records information of two card swipes (acquiescent as getting-on and getting-off) of the same card number in real time, wherein the information comprises the card number, the name of a getting-on station, the name of a getting-off station, the time of getting-on and the time of getting-off, the remote bus application system accesses the information of the two card swipes in real time into a real-time database of a remote bus data system, and the remote bus data system mainly comprises a server, a real-time database, a relational database, a file system and access hardware (a hard disk and a disk array). The remote public transportation application system mainly comprises a server, an operating system, application software and a database management system, wherein the database management system is responsible for the management of a real-time database, a relational database and a file system of the remote public transportation data system, and the management comprises the reading and the storage of card swiping information.
The camera module collects image data and transmits the image data to the vehicle-mounted navigation end, and a processor of the vehicle-mounted navigation end processes the image data, transmits the data to the remote bus application system in real time and finally stores the data in the remote bus data system.
Signal lamp system
Intelligent signal machine, signal lamp, long-range signal lamp data system, camera module, long-range signal lamp application system intelligent signal machine mainly comprise 5G wireless communication module, satellite positioning module, image processor, microprocessor, microcontroller, memory, circuit board, fuselage, antenna, power, interface.
The intelligent signal machine receives bus-mounted end data within a certain distance range, and the functions of the intelligent signal machine comprise: receiving the driving position and the passenger number information of a bus card swiping machine system; wirelessly sending an instruction to a signal lamp to control the state of the signal lamp; processing images and positioning data of road vehicles and pedestrians; communicate with a remote signal application system (the remote signal application system is responsible for data access of the remote signal data system), wherein:
the satellite positioning module receives road navigation end (vehicle or pedestrian) data in a certain distance range sent by a satellite navigation service system.
The image processor reads or receives the image data of the vehicles and pedestrians from the camera module and coordinates with the microprocessor.
The microprocessor is responsible for calculating the driving data (position and passenger number) of the bus, the image data of road vehicles and pedestrians, GPS data and 5G data, operating system software and algorithm software for controlling a signal lamp alternating mechanism, and working in coordination with the MCU.
The microprocessor and the microcontroller work cooperatively and are responsible for managing and controlling 5G wireless communication, GPS communication, interface communication, communication with a signal lamp and communication with the camera module.
The power supply is responsible for supplying power and consists of an external power supply interface, a transformer (voltage transformation, alternating current-direct current conversion, voltage stabilization and constant current) and a storage battery.
The body is composed of closed metal and insulating material, the insulating material is used for transmitting and receiving signal antenna parts, the antenna has two types of built-in and built-out, the shell part close to the built-in antenna is made of the insulating material, the built-out antenna is led out from the body by a wire, and the outer layer of the wire is wrapped by the insulating material.
The camera module mainly comprises a lens, an image sensor and a Digital Signal Processor (DSP), wherein the lens projects a vehicle image to the image sensor and converts the vehicle image into an analog signal, the analog signal is converted into a digital signal through A/D conversion, the Digital Signal Processor (DSP) processes the analog signal, and finally the MPU and the GPU process and calculate the position, the speed, the density and the distance data of the vehicle.
The interface comprises a wired interface (the communication mode of the intelligent annunciator and the signal lamp comprises a wireless interface and a wired interface) which is communicated with the signal lamp, a wired interface which is communicated with the camera module and a wired interface which is communicated with the remote signal lamp application system.
The wired interface communication and the wireless communication comprise the communication in a signal lamp system, the communication in a bus card swiping machine system and the communication between the signal lamp system and the bus card swiping machine system according to a certain communication protocol.
Third, the linkage mechanism of the signal lamp system and the bus card swiping machine system
The signal lamp system is based on the rotation of bus quantity, driving position and passenger number, the road traffic flow data (vehicle quantity outside the bus, density, speed) control signal lamp of traveling to the regional certain distance within range of crossing, and concrete linkage mechanism includes:
1. the method comprises the steps of taking a plurality of road sections which are driven to an intersection for a certain distance, wherein the sum of the residence time of a bus in the road section, the sum of the residence time of passengers, the sum of the residence time of the bus in the previous intersection (driven to the previous intersection for a certain distance) road section and the sum of the residence time of the passengers all participate in a rotation mechanism of signal lamps of the intersection, namely, the sum of the residence time of the bus in the previous intersection road section, the sum of the residence time of the bus in the current intersection road section, the sum of the residence time of the number of passengers in the previous intersection, the sum of the residence time of the number of passengers in the current intersection and the sum of the residence time of the number of passengers in the current.
As shown in figure 1, the number of buses at a road section A at the intersection is a, the number of buses at a road section B (which crosses A and the signal lights of B and A are alternated) at the intersection is B, and the sum of the stay time of a vehicles on the road section A is ta0B sum of the time of stay of the vehicle on the road section B is tb0The total number of passengers of the a bus on the road section A is PaB the total number of passengers of the bus on the road section B is Pb. Assuming that the a vehicles all drive from the road section C and the b vehicles all drive from the road section D, the staying time of the a vehicles on the road section C is TacThe residence time of the vehicle on the road section D is TbdThe stay time refers to a red light waiting time or a congestion stay time. The green light priority model is:
Φ1(ρta0+κPa+μTac) Is the comprehensive queuing priority of the A-phase buses on the road section, rho, kappa and mu are the ratio coefficients, phi2(ρt′A0+μT′Ac) Is the comprehensive queuing priority of the conventional vehicles (non-buses) in the phase A of the road section1Is the comprehensive ratio coefficient of the bus, phi2Is the comprehensive ratio coefficient of the conventional vehicle, phi2If 0 is selected, the green light priority completely depends on the comprehensive queuing priority quantity of the bus;
Φ1(ρtb0+κPb+μTbc) Is the comprehensive queuing priority of the buses on the road section B,
Φ2(ρt′B0+μT′Bc) Is the comprehensive queuing priority of the conventional vehicles (non-buses) in the B phase of the road section1Is the comprehensive ratio coefficient of the bus, phi2Is the comprehensive proportion coefficient of the conventional vehicle; beta is a road priority coefficient, for example, if the road A is a trunk lane and the road B is a non-trunk, the importance degree ratio of the roads A and B is adjusted by setting the value of beta;
x is the green light priority ratio of the road section A to the road section B, if x is greater than 0, the road section A takes priority of green light, and if x is less than 0, the road section B takes priority of green light.
Green light duration model:
T＝jx
t is the green duration of the priority green road segment phase, j is the duration coefficient, and x is the green priority ratio.
2. The method comprises the steps of taking a plurality of road sections (or phases) which are driven to (close to) an intersection for a certain distance, taking the number of buses and the number of passengers in different road sections (or phases) to participate in a turn mechanism of a signal lamp of the intersection, wherein the turn mechanism comprises a green light priority mode, a green light time priority mode and a phase combination mode.
As shown in fig. 1, the ratio of the number of buses and the number of passengers on the road segment a to the number of buses and the number of passengers on the road segment B is the green light priority ratio of the road segment a to the road segment B, and the green light priority model:
symbol x' is the green priority ratio for road A to road B, Qa、QbThe number of buses, Q ', of road segment A and road segment B respectively'A、Q′BThe number of conventional vehicles (non-buses) on the road section A and the road section B respectively. The same symbols are as explained in 1 above, κ PaAnd kappa PbThe number of passengers in the bus on the road section A and the road section B respectively. Phi2If 0 is selected, the green light priority is completely dependent on the comprehensive queuing priority quantity of the bus.
Green light duration model:
T＝jx′
fourth, remote center application system and remote center data system
The remote center application system is in associated communication with the remote bus application system and the remote signal lamp application system, receives or collects data of the remote bus data system and the remote signal lamp data system, stores the data into the remote center data system, monitors operation and maintenance conditions of the signal lamp system and the bus card swiping machine system in real time, and calculates road passing efficiency based on data analysis.
Drawings
FIG. 1 is a traffic network diagram of intersections and road segments;
1 intersection
2 at the intersection
(III) crossing 3
Road junction 4
Fifth road section A
Road section C
Seventh road section B
' road section D
FIG. 2 is a diagram of a traffic signal intelligent guidance system architecture based on a bus priority mechanism;
remote center application system
② remote center data system
Remote signal lamp application system
Remote signal lamp data system
Signal lamp
Sixth, intelligent signal machine
Seventh image pickup module
Remote bus data system
Ninthly remote bus application system
Vehicle navigation end in R
Detailed Description
1. As shown in fig. 2, a camera module
Collecting bus passenger data, bus surrounding and pedestrian data, vehicle-mounted card swiping terminal
Collecting passenger card swiping data, transmitting the data to the vehicle navigation end (R), transmitting the data to the remote bus application system (R) by the vehicle navigation end (R), storing the data in the remote bus data system (R), calculating the number of passengers data by the vehicle navigation end (R) and transmitting the result to the intelligent annunciator (R0), analyzing and calculating the data based on the bus passenger data and the camera module (C), controlling the alternate state of the signal lamp (C), transmitting the signal lamp state to the vehicle navigation end of the bus card swiping machine system in real time by the intelligent annunciator (C), simultaneously transmitting the signal lamp state data, the number of buses and the number of passengers data to the remote signal lamp application system (R1), finally storing the data to the remote signal lamp data system (R2), analyzing and calculating the remote signal lamp application system (R3) based on the real-time data in the remote signal lamp data system (R4), and stores the resulting data in remote beacon-based data system r 5.
The remote public transport application system sends key data to a remote center application system in real time, the remote center application system stores the data to a remote center data system in real time, the remote center application system analyzes and calculates the data based on the remote center data system, and stores the result data to the remote center data system.
The remote signal lamp application system sends key data to a remote center application system in real time, the remote center application system stores the data to a remote center data system in real time, the remote center application system analyzes and calculates the data based on the remote center data system, and stores result data to the remote center data system;
2. software and hardware integration, signal lamp system and bus card swiping machine system integration
The first scheme is as follows:
the signal lamp alternation algorithm software runs in a remote signal lamp application system, and the bus passenger number calculation software runs in a remote bus application system.
The bus card swiping machine system sends the driving position and the number of passengers to a remote signal lamp application system of the signal lamp system through the remote bus application system, and the remote signal lamp application system controls the state of the signal lamp based on the driving position, the number of passengers and a signal lamp alternation algorithm.
Scheme II:
the signal lamp rotation algorithm software runs in an intelligent signal machine at a road junction, and the bus passenger number calculation software runs at a vehicle-mounted navigation end of the bus card swiping machine system.
The bus card swiping machine system sends the driving position and the number of passengers to an intelligent signal machine (intelligent signal machine configuration data storage system) of a front intersection signal lamp system through a vehicle-mounted navigation end and a vehicle-mounted card swiping end, and simultaneously sends data to a remote bus application system in real time, the remote bus application system is communicated with the remote bus data system, and the remote bus application system is responsible for data access of the remote bus data system.
. The intelligent signal machine controls the rotation of signal lamps based on data sent by all buses in the current intersection area. Simultaneously, the intelligence semaphore sends long-range signal lamp application system with driving position and passenger number, signal lamp real-time status data in real time, and long-range signal lamp application system and long-range signal lamp data system intercommunication, long-range signal lamp application system are responsible for long-range signal lamp data system's data access.
Claims (3)
1. Traffic signal intelligence guides system based on bus priority mechanism, mainly by signal lamp system, bus machine for punching card system, remote center application system, remote center data system, signal lamp system and bus machine for punching card system's linkage mechanism constitute, wherein signal lamp system mainly comprises intelligent signal machine, the signal lamp, remote signal lamp data system, communication module, camera module, remote signal lamp application system, bus machine for punching card system mainly comprises on-vehicle end of punching card, on-vehicle navigation end, camera module, remote bus data system, remote bus application system constitutes, traffic signal intelligence based on bus priority mechanism guides system's characteristic is: the vehicle-mounted card swiping end collects card swiping data of passengers, the data are transmitted to the vehicle-mounted navigation end, the vehicle-mounted navigation end transmits the data to the remote bus application system, the data are stored in the remote bus data system, the vehicle-mounted navigation end calculates the number of the passengers and sends results to the intelligent annunciator, the intelligent annunciator analyzes and calculates and controls the alternate state of signal lamps based on the bus passenger data, the intelligent annunciator simultaneously sends the signal lamp state data, the number of the buses and the number of the passengers to the remote signal lamp application system, the data are finally stored in the remote signal lamp data system, and the remote signal lamp application system analyzes and calculates based on real-time data in the remote signal lamp data system, and storing the result data into a remote signal lamp data system, transmitting the key data to a remote center application system by the remote bus application system in real time, and transmitting the key data to the remote center application system by the remote signal lamp application system in real time.
2. According to claim 1, the linkage mechanism of the signal lamp system and the bus POS system, green light priority model 1:
green light duration model 1:
T＝jx
green light priority model 2:
green light duration model 2:
T＝jx′
3. the bus card swiping machine system is characterized in that according to the claim 1: the bus card swiping machine system is in real-time communication with the signal lamp system, the signal lamp system sends the state of the signal lamp to the bus card swiping machine system in real time, and the bus card swiping machine system calculates the number of passengers.
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