Summary of the invention
For above-mentioned the technical problems existing in the prior art, present invention technical solution used for the above purposeIt is: a kind of intelligent public transportation system based on technology of Internet of things, including onboard subsystem, platform subsystem and based on the intelligence of Internet of ThingsThe software of energy public transit system；The onboard subsystem is by main control microprocessor, high frequency transceiving chip, wireless receiving chip, voiceControl the modules such as chip, liquid crystal display, touch screen, memory composition；The platform subsystem is by main control microprocessor, high frequencyThe module compositions such as transceiving chip, display control chip, memory and touch screen；The intelligent public transportation system based on Internet of ThingsSoftware is packaged by Zigbee and RFID function of the network layer to bottom, and unified calling is provided to GUI upper interfaceInterface.
Using RFID technology acquisition bus information to carry out locating and tracking to public transit vehicle, the passenger that waits is in websiteTouch screen on select the public transport bus or train route to be taken time, real time communication is carried out by wireless sensor network, realizes passenger and publicHand over the information exchange between vehicle.Onboard subsystem may be implemented the automatic positioning of bus, automatically record traveling information, Cheng KerenThe functions such as number statistics and fault alarm；Platform subsystem can acquire secondary Customer information of waiting of not going the same way, show each train numberMultidate information enables traveler to understand the arrival time of vehicle by electronic stop plate.The major function mould of intelligent public transportation systemBlock is as follows:
1) RFID bus monitors: radio frequency identification (Radio Frequency Identification) technology is a kind of wireless, non-contacting automatic identification technology, RFID technique can position public transit vehicle, tracked and be monitored.RFID system byReader, antenna, 3 part of electronic tag composition.Since public bus network is relatively fixed, and each website has a plurality of route notSame vehicle parking installs RFID reader in each website, RFID label is sticked on bus, when bus is close to websiteWhen, reader can read the data of corresponding bus, then the traffic parameter of microwave remote sensor acquisition bus, and will be publicThe temporal information that the address information of friendship website, public bus information, public transit vehicle reach website links together.
2) Zigbee is wirelessly communicated: Zigbee has low-power consumption, low cost, low rate, short distance, short time-delay, Gao RongThe characteristics of amount, high safety [6], it is suitable for the application of intelligent public transportation system.Zigbee radio network technique by car-mounted terminal, standPlatform system and dispatch center connect, and Zigbee transceiving chip is by collected each road time public bus information and respectivelyWebsite Customer information of waiting through wireless sense network is transferred to transit operation center, and transit operation center can be according to multiplyingThe volume of the flow of passengers and public bus information adaptively carry out public transport Real-Time Scheduling and dynamic monitors.
3) onboard subsystem: onboard subsystem realizes the automatic positioning of bus, voice automatic broadcasting, automatically records travelingThe functions such as information and fault alarm.When close to website, wireless data receiver gives the geography information signal received to masterControl microprocessor is analyzed and processed, and obtains corresponding reaction signal, which reaches audio control chip through serial line interface,Chip drives audio driver according to signal, realizes that automatic speech is called out the stops and warm tip by external voice output loudspeaker.Meanwhile liquid crystal display systems chip handles the signal transmitted through main control microprocessor, drives display driving software,The title and picture of respective site are shown on the screen, and simply roll signal language, while can also play some a surnamesThe poster of transmissibility, public welfare advertisement, the sight spot information closed on route.In certain festivals or holidays, red-letter day element can be incorporated, is increasedAdd the entertainment of passenger.When public transit vehicle meets with a street accident or vehicle trouble occurs, driver can pass through settingKey to control centre send fault-signal request help.
4) platform subsystem: platform subsystem realizes the system of the ridership of estimating and wait of each road time bus arrival timeMeter.And will be stored in an encoded form in the memory of microprocessor by the train number of platform, when passenger comes platform, can lead toThe train number taken needed for touch screen B selection is crossed, main control microprocessor is by the coding read in train number coded stack and is dividedAnalysis processing, analysis processing after the completion of, main control microprocessor on the one hand driving high frequency transceiving chip by the respective counts of the train number it is believed thatNumber continual release is carried out in the range of can transmit；On the other hand, main control microprocessor is by data signal transmission to displayControl chip.When corresponding train number enters within the scope of wireless signal, the train number is after receiving and having verified information, onboard subsystemCorresponding data-signal can be fed back and give platform subsystem, and the train number is eliminated by display control unit and has ridership of waiting,So that it is reduced into init state again, and shows that " road * * bus will arrive at a station, and passenger is asked to carry out standard on a display screenIt is standby " warm tip.
Compared with prior art, the beneficial effects of the present invention are: intelligent public transportation system is collection environmental protection and energy saving, city bus prisonSeveral big systems such as pipe, Bus information publication are in the New Generation of Intelligent of one, environmental protection, digitlization bus shelter and " car networking " systemSystem, it is one of the key link for realizing urban transportation modernization.Intelligent public transportation system based on Internet of Things has vehicle monitoringThe functional modules such as scheduling, car-mounted terminal, electronic stop plate and communication network realize the real-time hair of the information such as each train number arrival timeCloth selects by bus for citizen and public transport monitoring management provides real-time public transport arrival information.Intelligent public transportation system can improve public affairsIntermodulation degree means improve bus operation efficiency, improve public transport attraction and share rate.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the invention is clearly and completely described,Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based in the present inventionEmbodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, allBelong to the scope of protection of the invention.
A kind of intelligent public transportation system based on technology of Internet of things, including onboard subsystem, platform subsystem and be based on Internet of ThingsThe software of the intelligent public transportation system of net；The onboard subsystem is by main control microprocessor, high frequency transceiving chip, wireless receiving coreThe modules such as piece, voice control chip, liquid crystal display, touch screen, memory composition；The platform subsystem is by master control micro processThe module compositions such as device, high frequency transceiving chip, display control chip, memory and touch screen；The intelligence based on Internet of Things is publicThe software of friendship system is packaged by Zigbee and RFID function of the network layer to bottom, provides system to GUI upper interfaceOne calling interface.
Using RFID technology acquisition bus information to carry out locating and tracking to public transit vehicle, the passenger that waits is in websiteTouch screen on select the public transport bus or train route to be taken time, real time communication is carried out by wireless sensor network, realizes passenger and publicHand over the information exchange between vehicle.Onboard subsystem may be implemented the automatic positioning of bus, automatically record traveling information, Cheng KerenThe functions such as number statistics and fault alarm；Platform subsystem can acquire secondary Customer information of waiting of not going the same way, show each train numberMultidate information enables traveler to understand the arrival time of vehicle by electronic stop plate.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be withA variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understandingAnd modification, the scope of the present invention is defined by the appended.