CN103065493A - Public transportation vehicle automatic station announcement method - Google Patents
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- CN103065493A CN103065493A CN2012105578748A CN201210557874A CN103065493A CN 103065493 A CN103065493 A CN 103065493A CN 2012105578748 A CN2012105578748 A CN 2012105578748A CN 201210557874 A CN201210557874 A CN 201210557874A CN 103065493 A CN103065493 A CN 103065493A
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Abstract
Provided is a public transportation vehicle automatic station announcement method. The method includes the following steps: a station node subsystem is set in each station on a public transportation vehicle running route; and a vehicle-mounted node subsystem is set in each public transportation vehicle. The station node subsystem comprises a station singlechip, a station address information storage device and a station zigbee module, wherein the station address information storage device and the station zigbee module are connected with the station singlechip. The vehicle-mounted node subsystem comprises a vehicle-mounted singlechip, a vehicle-mounted zigbee module, a vehicle information storage device, a voice file storage device and a voice announcement circuit, wherein the vehicle-mounted zigbee module, the vehicle information storage device, the voice file storage device and the voice announcement circuit are connected with the vehicle-mounted singlechip. Zigbee technology is utilized to achieve communication between subsystems, and therefore the public transportation vehicle automatic station announcement method has the advantages of being small in power consumption, low in cost, short in time delay, strong in anti-jamming capacity in a transmission distance, free of blind zone and the like. In addition, the public transportation vehicle automatic station announcement method well overcomes a defect of a traditional wireless station announcement method, is capable of conveniently and accurately obtaining running information, and avoids the phenomena of misinformation and failure to announce of an automatic station announcement system.
Description
Technical field
The present invention relates to the public transit vehicle reporting station method of a kind of automatic acquisition public transit vehicle travel information and report and display station dot information, belong to technical field of traffic transportation.
Background technology
Entered since 21 century, along with the development of urbanization, traffic problems become the difficult problem of whole world facing.First developing urban public transport, is to improve the traffic resource utilization ratio, alleviates the important means of traffic congestion, also is the Critical policies that solves the big and medium-sized cities traffic problems.In recent years, China's urban public transport has had very fast development, but the quickening along with socio-economic development and Development of China's Urbanization, each big and medium-sized cities Public Transport Service accessibility is poor, reliability is low, the high problem of Public Traveling inconvenience that causes consuming time becomes increasingly conspicuous, public transport is not strong as the attractive force of the first-selected trip mode of the public, has had a strong impact on the raising of city bus share rate in urban transportation.
For the problems referred to above, each big and medium-sized cities has progressively been introduced " Intelligent Public Transportation System " in recent years, so-called Intelligent Public Transportation System, be exactly to distribute at public traffic network, the key nodes such as bus dispatching, utilize theory and the method for systems engineering, with modern communications, information, electronics, control, computing machine, network, GPS, the integrated public transportation system that is applied to of the new technologies such as GIS, by making up modern information management system and Control and Schedule pattern, the scheduling of realization public transport, operation, the informationization of management, modernized and intelligent, for traveler provides safer, comfortable, Public Transport Service easily, thereby the alleviation urban traffic congestion effectively solves urban transport problems.The automatically reporting station of public transport vehicle system namely is an important ingredient in the Intelligent Public Transportation System.
The public transit vehicle reporting station system arrives the automatic station name announcing system based on wireless technology again from the most original semi-automatic reporting station system of manually calling out the stops, develop into driver's button, has roughly experienced three phases.Manually calling out the stops at present progressively is eliminated with touch-tone semi-automatic reporting station system, is replaced gradually by the automatic station name announcing system based on wireless technology.
Automatic station name announcing system based on wireless technology mainly comprise: infrared technique, wi-fi technology, GPS technology etc.Although above-mentioned three kinds of wireless technologys can be finished the task of automatic broadcasting under certain condition, owing to the defective of technology self, all can not satisfy the needs of automatic broadcasting fully.Infrared technique exists communication distance short, can not move in the communication process, meet the shortcoming of barrier communicating interrupt, and public transit vehicle is in operational process, infrared transceiver very easily is subject to stopping and communication interruption of shade tree, street lamp, oversize vehicle etc., therefore relatively poor based on the reporting station system antijamming capability of this technology, use at present less; The wi-fi technology can satisfy the needs of normal automatic broadcasting, but the general energy consumption of wi-fi equipment is larger, therefore the wi-fi device end in platform one side often needs the dedicated line power supply, if all platforms of city are all installed the wi-fi terminal, then cause electric power resource to consume greatly, and some platform do not have dedicated line, do not have the condition that wi-fi equipment is installed, therefore automatic station name announcing system can not cover whole websites, causes certain inconvenience for passenger and driver.Automatic station name announcing system influence power based on the GPS technology increases gradually at present, but also there is certain problem, because GPS is based on the satellite carrier communication, the ability that its signal breaks the barriers a little less than, under MODEL OVER COMPLEX TOPOGRAPHY under (on the built-up street, both sides, city, in the tunnel, overpass inferior ground) and the bad weather condition (cloud thickness is large, heavy rain etc.), there is easily or occurs a large amount of GPS blind area, public transit vehicle travels and do not receive coordinate information in these GPS blind area, thus the generation that causes the automatic station name announcing system wrong report, fails to report problem.
In sum, existing automatic station name announcing system all can not be cheap, obtain travel information easily and accurately, is necessary to develop new automatic station name announcing system, explores new reporting station method.
Summary of the invention
The object of the invention is to the drawback for prior art, a kind of method for automatically reporting station of public transport vehicle that can obtain easily and accurately travel information and report and show site name is provided.
Problem of the present invention realizes with following technical proposals:
A kind of method for automatically reporting station of public transport vehicle, described method arranges a platform node subsystem at each website of public transit vehicle travel route, at each public transit vehicle a vehicle-mounted node subsystem is set, site information-storing device and platform zigbee module that described platform node subsystem comprises the platform single-chip microcomputer and is attached thereto, described vehicle-mounted node subsystem comprises vehicle-mounted single-chip microcomputer and the vehicle-mounted zigbee module that is attached thereto, the information of vehicles storer, voice document storer and sound broadcast circuit
Described platform node subsystem and vehicle-mounted node subsystem operate as follows:
The address information that has our station point in the site information-storing device of platform node subsystem at set intervals, is sent instruction by the platform single-chip microcomputer, outwards sends the beacon frame that comprises this site address information by platform zigbee module;
There is the address information table that comprises all websites of this bus travel route in the information of vehicles storer of vehicle-mounted node subsystem, in the voice document storer of vehicle-mounted node subsystem, prestore the audio file corresponding with each website, after bus enters the signal cover of platform zigbee module, the vehicle-mounted zigbee module of vehicle-mounted node subsystem listens to the beacon frame that platform node subsystem sends, platform address information in the beacon frame is sent to vehicle-mounted single-chip microcomputer thereupon, judge by vehicle-mounted single-chip microcomputer whether this address information is included in the address information table that the information of vehicles storer stores, as not comprising, then do not carry out next step operation, as be included in the address information table, then proceed as follows:
1. vehicle-mounted single-chip microcomputer sends instruction to vehicle-mounted zigbee module, sets up the zigbee network with this platform node subsystem;
2. vehicle-mounted single-chip microcomputer sends instruction to the sound broadcast circuit, begins to play and the corresponding audio file of current site address;
3. the temporal information that will set up the zigbee network is charged to the information of vehicles storer;
After bus rolled the range of signal of platform zigbee module away from, vehicle-mounted zigbee module and platform zigbee module communication interrupted, and send communicating interrupt information to vehicle-mounted single-chip microcomputer thereupon, are proceeded as follows by vehicle-mounted single-chip microcomputer:
1. vehicle-mounted single-chip microcomputer sends instruction to vehicle-mounted zigbee module, disconnects the zigbee network with platform node subsystem;
2. vehicle-mounted single-chip microcomputer sends instruction to the sound broadcast circuit, begins to play and the corresponding audio file in the next stop;
The temporal information that 3. will disconnect the zigbee network is charged to the information of vehicles storer.
Above-mentioned method for automatically reporting station of public transport vehicle, described method also is provided with dispatching center's control node subsystem, and described dispatching center's control node subsystem comprises scheduling single-chip microcomputer and the schedule information storer that is attached thereto, scheduling zigbee module, schedule information display module and manual load module.
Described dispatching center's control node subsystem operates as follows:
Bus is finished operation and is sailed the dispatching center into, the vehicle-mounted zigbee module of the scheduling zigbee module of dispatching center's node subsystem and vehicle-mounted node subsystem is set up the zigbee network, send instruction by vehicle-mounted single-chip microcomputer, be uploaded to dispatching center node subsystem with temporal information each website establishment zigbee network and the temporal information of disconnection zigbee network by the zigbee network with that store in the information of vehicles storer.
Above-mentioned method for automatically reporting station of public transport vehicle, described platform node subsystem adopts the sun-generated electric power module for power supply.
Above-mentioned method for automatically reporting station of public transport vehicle, also comprise the car-mounted display module that links to each other with vehicle-mounted single-chip microcomputer in the described vehicle-mounted node subsystem, in the information of vehicles storer, prestore a plurality of texts corresponding with all websites of this bus travel route, after vehicle-mounted node subsystem and platform node subsystem are set up the zigbee network, vehicle-mounted single-chip microcomputer sends instruction to the car-mounted display module, output and the corresponding text of current site address; After vehicle-mounted node subsystem and platform node subsystem disconnected the zigbee network, vehicle-mounted single-chip microcomputer sent instruction to the car-mounted display module, output and the corresponding text of next website.
Above-mentioned method for automatically reporting station of public transport vehicle, also comprise button inputting circuits in the described vehicle-mounted node subsystem, described button inputting circuits comprises three keyswitches, the switching signal of their output connects respectively P3.3, P3.4, the P3.5 port of vehicle-mounted single-chip microcomputer, the driver changes the mode of operation of vehicle-mounted node subsystem by three keyswitches, realizes manually calling out the stops.
The present invention utilizes the ziebee technology to realize communication between each subsystem, has that power consumption is little, cost is extremely low, time delay short, by force, there are not the advantages such as blind area in antijamming capability in the transmission range.Described method has overcome the shortcoming of conventional wireless reporting station method well, can obtain easily and accurately travel information, the generation of avoided the automatic station name announcing system wrong report, failing to report phenomenon.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the system principle synoptic diagram;
Fig. 2 is the electrical schematic diagram of platform node subsystem;
Fig. 3 is the electrical schematic diagram of vehicle-mounted node subsystem;
Fig. 4 is the electrical schematic diagram of dispatching center's control node subsystem.
Used symbol inventory is among the figure: U1, platform single-chip microcomputer, U2, site information-storing device, U3, platform zigbee module, U 4, vehicle-mounted single-chip microcomputer, U5, information of vehicles storer, U6, vehicle-mounted zigbee module, U7, voice document storer, U8, scheduling single-chip microcomputer, U9, schedule information storer, U10, scheduling zigbee module, JP1, button inputting circuits, JP2, manual load module, LCD1, car-mounted display module, LCD2, schedule information display module, SD, sound broadcast circuit.
Embodiment
The present invention is a kind of automatically reporting station of public transport vehicle system based on Zigbee-technology, and major function is to realize the automatic broadcasting of public transit vehicle and generate accurately travel time information.It is 70 meters characteristics that the present invention takes full advantage of the Zigbee-technology transmission range, and low-power consumption, low cost, the advantage such as prolong in short-term, development and Design low in energy consumption, time delay short, by force, there is not the GPS blind area in antijamming capability, can generate the automatic station-reporting system for vehicles of accurate travel information.It is three parts that the present invention is divided into, and is respectively platform node subsystem, vehicle-mounted node subsystem and dispatching center's control node subsystem.Do not set up the zigbee network between each platform node, the dispatching center's control node, vehicle-mounted node is set up according to travel route and each platform node, dispatching center's control node or is disconnected the zigbee network, and triggers operations such as calling out the stops, transmit travel time information.
(1) platform node subsystem
Major function: the platform node mainly be responsible for to send the beacon frame that contains site information, require low in energy consumption, cost is low, easy care.
Functional module forms and the method for operation: site information-storing device, platform single-chip microcomputer, platform zigbee module, solar-electricity source module (not shown in FIG.).The site information-storing device is responsible for storing local site information, the solar-electricity source module provides uninterrupted power source for this node, and the platform single-chip microcomputer extracts local site information and is sent to the vehicle-mounted node of built vertical communication by platform zigbee module from the site information-storing device.
Hardware forms: the model of platform zigbee module is that the model of DRF1605, platform single-chip microcomputer is that STC12C5410AD, solar-electricity source module are comprised of 3000mAh3.7v solar energy charging battery and Voltage stabilizing module etc.This subsystem stream time is long, automatically real time charging.
Each platform node in the communication range with it the vehicle-mounted node of networking send self authentication information, the platform zigbee module speed 38400bps that sets up serial ports, wireless frequency 2.4GHz.
(2) vehicle-mounted node subsystem
Major function: the beacon frame of detecting platform node emission, set up the zigbee network, trigger the operation of calling out the stops out of the station, the registration of vehicle time out of the station.
Functional module forms and the method for operation: vehicle-mounted node subsystem comprises voice document storer, information of vehicles storer, vehicle-mounted single-chip microcomputer, vehicle-mounted zigbee module, car-mounted display module, sound broadcast circuit, button inputting circuits.The beacon frame of vehicle-mounted Zigbee module detecting platform node emission when entering the station, if this site information is included in the site information table of vehicle-mounted node, vehicle-mounted single-chip microcomputer sends instruction and this platform node is set up the zigbee network, carry out sound broadcast, carry out text display from the corresponding text of information of vehicles memory fetch from voice document memory fetch respective audio file by site information, deposit in the information of vehicles storer such as this site information, the time of entering the station simultaneously; Set off after 70 meters, vehicle-mounted zigbee module will be lost the beacon frame of platform node, vehicle-mounted single-chip microcomputer obtains sending instruction disconnection zigbee network after this information, carry out the voice reporting next stop, carry out text display from the corresponding text of information of vehicles memory fetch from voice document memory fetch respective audio file, deposit the departures time in the information of vehicles storer simultaneously.The model of vehicle-mounted zigbee module is DRF1605, and the model of vehicle-mounted single-chip microcomputer is STC12C5410AD.
The car-mounted display module adopts YM128*64, and this module is 128 * 64 dot matrix type LCD, can show 4 row Chinese and English, and carry the demonstration character library.System uses synchronous serial data load mode and single-chip microcomputer to communicate.Show that control end CSA, CSB link to each other with P2.5, the P2.6 of single-chip microcomputer respectively.
Three buttons of button inputting circuits link to each other with P3.3, P3.4, the P3.5 port of vehicle-mounted single-chip microcomputer respectively, by the corresponding state of key change, realize manually calling out the stops.Manually call out the stops and do not conflict with automatic broadcasting, do not affect the automatic broadcasting sign of system made.The function of three buttons: manually report the next stop, translate into a station, translate into the next stop.
Voice module adopts the ISD4004 speech chip.ISD4004-16 speech chip operating voltage is 3.3V, 16 minutes monolithic recording playback time, the platform address information is stored in the ISD4004 speech chip in order, when calling out the stops by single-chip microcomputer outbound platform address information to the ISD4004 speech chip, extract the respective audio data and call out the stops.
The information of vehicles storer is selected AT24C64, and it is 8192 bytes of storage space with 8k*8, can deposit 4096 Chinese characters, and enough native systems use.
Clock chip is selected DS1687-3, operating voltage: 2.7V～3.7V, by serial line interface and vehicle-mounted single chip communication, it is that the time standard of HH:MM:SS12/24 hour/YY-MM-DD-dd shows that form can be provided.
Vehicle-mounted node subsystem adopts 3.7v 2600mAh lithium battery and Voltage stabilizing module power supply, can power continuously more than 26 hours, is designed to car and starts rear automatic charging type.
(3) composition of dispatching center's control node subsystem
Major function: dispatching center's control node is hand-held, and main being responsible for set up the zigbee network with vehicle-mounted node, extracts travel information, offers intelligent traffic management system and further uses.
Functional module forms and the method for operation: schedule information storer, scheduling single-chip microcomputer, scheduling zigbee module, schedule information display module, manual load module, power module.Scheduling zigbee module is sent beacon frame, finish operation when vehicle and sail the dispatching center into, dispatching center's node and vehicle-mounted node are set up the zigbee network, and the scheduling single-chip microcomputer sends instruction, extract the travel information of vehicle-mounted this operation of node, and be stored on the schedule information storer.After extraction is finished, disconnect the zigbee network.
Operational mode
(1) working mechanism of vehicle-mounted node and platform node zigbee network.Platform zigbee module is set to the RFD pattern, at set intervals, sends instruction by the platform single-chip microcomputer, outwards sends the beacon frame that comprises this site address information by platform zigbee module, and signal cover is 70m.Vehicle-mounted zigbee module is set to the FFD pattern, be responsible for intercepting the beacon frame that the platform node sends, in case bus enters into the signal cover of platform node, vehicle-mounted zigbee module will listen to the beacon frame of platform node, and the platform address information in the beacon frame is sent to vehicle-mounted single-chip microcomputer will process.
The working mechanism of reporting station system when (2) public transit vehicle enters the station.After bus sailed the range of signal of platform zigbee module into, vehicle-mounted zigbee module listened to the beacon frame of platform node, sent the address information that comprises in the beacon frame to vehicle-mounted single-chip microcomputer thereupon.Judge that by vehicle-mounted single-chip microcomputer this address information whether in the address information table that this bus travel route comprises, as not comprising, then do not carry out next step operation.As included, then proceed as follows: vehicle-mounted single-chip microcomputer sends instruction to vehicle-mounted zigbee module, sets up the zigbee network with this platform node; Vehicle-mounted single-chip microcomputer sends instruction to the ISD4004 speech chip, begins to play and the corresponding audio file of current site address; Vehicle-mounted single-chip microcomputer sends instruction to the car-mounted display module, output and the corresponding text of current site address; The temporal information of setting up the zigbee network is charged to the information of vehicles storer.
The working mechanism of reporting station system when (3) public transit vehicle sets off.After bus rolled the range of signal of platform zigbee module away from, vehicle-mounted zigbee module and platform zigbee module communication interrupted, and send communicating interrupt information to vehicle-mounted single-chip microcomputer thereupon.Proceeded as follows by vehicle-mounted single-chip microcomputer: vehicle-mounted single-chip microcomputer sends instruction to vehicle-mounted zigbee module, disconnects the zigbee network with the platform node; Vehicle-mounted single-chip microcomputer sends instruction to the ISD4004 speech chip, begins to play and the corresponding audio file in the next stop; Vehicle-mounted single-chip microcomputer sends instruction to the car-mounted display module, output and the corresponding text of next website; The temporal information that disconnects the zigbee network is charged to the information of vehicles storer.
(4) public transit vehicle is finished the working mechanism that moves dispatching center's node when sailing the dispatching center into.Bus is finished operation and is sailed the dispatching center into, and scheduling zigbee module and vehicle-mounted zigbee module are set up the zigbee network.By vehicle-mounted single-chip microcomputer the travel information in the storage unit is uploaded to dispatching center's node by the zigbee network.This public transit vehicle end of run, the reporting station system end of run.
Claims (5)
1. method for automatically reporting station of public transport vehicle, it is characterized in that, described method arranges a platform node subsystem at each website of public transit vehicle travel route, at each public transit vehicle a vehicle-mounted node subsystem is set, site information-storing device (U2) and platform zigbee module (U3) that described platform node subsystem comprises platform single-chip microcomputer (U1) and is attached thereto, described vehicle-mounted node subsystem comprises vehicle-mounted single-chip microcomputer (U4) and the vehicle-mounted zigbee module (U6) that is attached thereto, information of vehicles storer (U5), voice document storer (U7) and sound broadcast circuit (SD)
Described platform node subsystem and vehicle-mounted node subsystem operate as follows:
Have the address information of our station point in the site information-storing device (U2) of platform node subsystem, at set intervals, (U1) sends instruction by the platform single-chip microcomputer, outwards sends the beacon frame that comprises this site address information by platform zigbee module (U3);
There is the address information table that comprises all websites of this bus travel route in the information of vehicles storer (U5) of vehicle-mounted node subsystem, in the voice document storer (U7) of vehicle-mounted node subsystem, prestore the audio file corresponding with each website, after bus enters the signal cover of platform zigbee module (U3), the vehicle-mounted zigbee module (U6) of vehicle-mounted node subsystem listens to the beacon frame that platform node subsystem sends, platform address information in the beacon frame is sent to vehicle-mounted single-chip microcomputer (U4) thereupon, judge by vehicle-mounted single-chip microcomputer (U4) whether this address information is included in the address information table that information of vehicles storer (U5) stores, as not comprising, then do not carry out next step operation, as be included in the address information table, then proceed as follows:
1. vehicle-mounted single-chip microcomputer (U4) sends instruction to vehicle-mounted zigbee module (U6), sets up the zigbee network with this platform node subsystem;
2. vehicle-mounted single-chip microcomputer (U4) sends instruction to sound broadcast circuit (SD), begins to play and the corresponding audio file of current site address;
3. the temporal information that will set up the zigbee network is charged to information of vehicles storer (U5);
After bus rolls the range of signal of platform zigbee module (U3) away from, vehicle-mounted zigbee module (U6) is interrupted with platform zigbee module communication, communicating interrupt information is sent to vehicle-mounted single-chip microcomputer (U4), (U4) proceeds as follows by vehicle-mounted single-chip microcomputer thereupon:
1. vehicle-mounted single-chip microcomputer (U4) sends instruction to vehicle-mounted zigbee module (U6), disconnects the zigbee network with platform node subsystem;
2. vehicle-mounted single-chip microcomputer (U4) sends instruction to sound broadcast circuit (SD), begins to play and the corresponding audio file in the next stop;
The temporal information that 3. will disconnect the zigbee network is charged to information of vehicles storer (U5).
2. a kind of method for automatically reporting station of public transport vehicle according to claim 1, it is characterized in that, described method also is provided with dispatching center's control node subsystem, described dispatching center's control node subsystem comprises scheduling single-chip microcomputer (U8) and the schedule information storer (U9) that is attached thereto, scheduling zigbee module (U10), schedule information display module (LCD2) and manual load module (JP2)
Described dispatching center's control node subsystem operates as follows:
Bus is finished operation and is sailed the dispatching center into, the scheduling zigbee module (U10) of dispatching center's node subsystem is set up the zigbee network with the vehicle-mounted zigbee module (U6) of vehicle-mounted node subsystem, (U4) sends instruction by vehicle-mounted single-chip microcomputer, is uploaded to dispatching center node subsystem with temporal information each website establishment zigbee network and the temporal information of disconnection zigbee network by the zigbee network with storage in the information of vehicles storer (U5).
3. a kind of method for automatically reporting station of public transport vehicle according to claim 1 and 2 is characterized in that, described platform node subsystem adopts the sun-generated electric power module for power supply.
4. a kind of method for automatically reporting station of public transport vehicle according to claim 3, it is characterized in that, also comprise the car-mounted display module (LCD1) that links to each other with vehicle-mounted single-chip microcomputer (U4) in the described vehicle-mounted node subsystem, in information of vehicles storer (U5), prestore a plurality of texts corresponding with all websites of this bus travel route, after vehicle-mounted node subsystem and platform node subsystem are set up the zigbee network, vehicle-mounted single-chip microcomputer (U4) sends instruction to car-mounted display module (LCD1), output and the corresponding text of current site address; After vehicle-mounted node subsystem and platform node subsystem disconnected the zigbee network, vehicle-mounted single-chip microcomputer (U4) sent instruction to car-mounted display module (LCD1), output and the corresponding text of next website.
5. a kind of method for automatically reporting station of public transport vehicle according to claim 4, it is characterized in that, also comprise button inputting circuits (JP1) in the described vehicle-mounted node subsystem, described button inputting circuits (JP1) comprises three keyswitches, the switching signal of their output connects respectively P3.3, P3.4, the P3.5 port of vehicle-mounted single-chip microcomputer (U4), the driver changes the mode of operation of vehicle-mounted node subsystem by three keyswitches, realizes manually calling out the stops.
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Application publication date: 20130424 |