CN102629421B - Intelligent electronic stop board host machine based on distributive secondary space-time correlation stop report and control method of intelligent electronic stop board host machine - Google Patents

Abstract

The invention provides an intelligent electronic stop board host machine based on distributive secondary space-time correlation stop report and a control method of the intelligent electronic stop board host machine and relates to the field of public traffic management and technical equipment. The intelligent electronic stop board host machine comprises an advanced reduced instruction-set computer machine (ARM) controller connected with a digital signal processing (DSP) coprocessor through an external bus, wherein a 3rd-generation (3G) communication module, a network module, a universal serial bus (USB) module and a flash module are connected with the ARM controller through buses, the ARM controller integrates a controller area network (CAN) interface, a USB interface, a general purpose input/output (GPIO) port expanding device and a synchronous/asynchronous serial port through the buses, a power supply adopts the direct current and alternating current and commercial power and storage battery input mode. The invention provides the distributive secondary space-time correlation stop report strategy algorithm steps and electronic stop board light emitting diode (LED) display strategy steps. The problem of error information or mislead information on users caused by time delay and package loss caused by the network problem is solved. The stop board equipment is integrated to the maximum degree, the wire distribution and the engineering installation are convenient, and meanwhile, the power consumption is greatly reduced.

Description

A kind of smart electronics station board main frame and control method thereof of calling out the stops based on distributed secondary temporal and spatial correlations

Technical field

The present invention relates to public transport management and technical equipment field thereof, relate in particular to the intelligent management to station board equipment, the public transit vehicle of calling out the stops based on distributed secondary temporal and spatial correlations is to smart electronics station board main frame and the control method thereof of forecast leaving from station, intellectual analysis.

Background technology

The mankind that develop into of auto industry have brought quick and convenience, but simultaneously, the development of automobile has also caused energy resource consumption and air pollution.Automobile is fastest-rising greenhouse gas emission source, and whole world traffic power consumption growth rate occupies first of every profession and trade, and traffic jam is also more and more serious.In order to reach, realize the sustainable use of environmental resource and the sustainable development of traffic, people start to focus on " Green Travel ".

Bus trip, as a kind of popular trip mode, is a kind of energy, raising efficiency, trip mode of polluting, being good for one's health, taking into account efficiency that reduces of saving; " Green Travel " advocated and paid attention in more and more cities.

In bus trip, for city's witenagemot, run into a series of like this problem: the interim modification to bus routes can not be understood in time, causes waiting as long at platform; The time that citizen are about to enter the station to bus is uncertain, it is pressed for time time, can only select other trip modes.For solving these problem electronic stop plates of civic, give birth to because of fortune.And present most of electronic stop plate adopts the solution of industrial computer, even if adopt the civil power that also must have for 24 hours of embedded host solution to access, cannot adapt to the rugged surroundings of current electronic stop plate operation completely.

Simultaneously existing station board networking has three kinds of modes: MANET, operator is wired, operator is wireless.The words cost of MANET is very large, and quantities is also very large, is not suitable with large batch of station board construction; Operator is wired, and quantities is huge, and in the situation that amount is few, cost is huge.

And remaining adopt operator wireless inevitably can introduce the problem that the packet loss that causes due to poor signal or packet postpone, giving calls out the stops brings great interference, the impact simultaneously bringing causes misleading to citizen passenger exactly.For example in patent 200710045444.7, adopt equally operator's wireless access way, his operational process is roughly as follows, vehicle is by vehicle GPS Information Monitoring, then the information exchange of collection is crossed to wireless GPRS mode and be transferred to server, then server sends to station board by the information of calling out the stops after calculating.

But station board is not considered electrical problems, do not consider the impact that wireless transmission causes simultaneously.So be not suitable with station board complex environment, can not guarantee the rate of reaching the standard grade of station board; Once two postpone or packet loss because network problem causes, and must give to call out the stops and bring problem, cause civic is misled.The major technique defect map existing is at present present:

(1) forecast strategy is single, may due to network delay or vehicle-bone global positioning system (Global Positioning System, GPS) fault, to cause and misrepresent deliberately, fail to report, jump report frequent;

(2) station board can not provide to call out the stops accordingly and revises and the calibration of calling out the stops to the rear end calculation server of calling out the stops, and can not carry out intellectual analysis to the passenger on platform equally, for rear end dispatching system provides reference value;

(3) reckon without the complexity problem of city electronic stop plate electric power supply, most of station board position is not because there is no direct commercial power supply, and equipment normal operation duration is generally on the low side;

(4) lack multi-stage, energy-saving job control pattern, in using the station board of light emitting diode (Light Emitting Diode, LED) screen, most station board main frame all reckons without LED electrical problem, and what have also just regulates LED brightness;

(5) apparatus for establishing, from monitoring, when station board equipment failure, cannot not react to operator in time, has improved maintenance cost;

(6) generally all use industrial computer as main control system, power consumption can be very large like this, and operation troubles rate is high;

(7) use industrial computer wiring complicated, comparatively trouble is installed, be not easy to safeguard, and the function that does not generally all have effective integration image acquisition to analyze.

Summary of the invention

The object of this invention is to provide a kind of low-power-consumption embedded main frame the equipment on electronic stop plate is carried out to intelligent management control, guaranteed the operation stability of electronic stop plate.

Another object of the present invention is to adopt the distributed secondary temporal correlation of the autonomous Design prediction algorithm of calling out the stops to solve the single problem of misrepresenting deliberately, failing to report and jump report of thereupon bringing of bus stop reporting strategy.

The object of the present invention is achieved like this: a kind of smart electronics station board main frame of calling out the stops based on distributed secondary temporal correlation, comprises and be mainboard, power supply in the housing of rectangular parallelepiped and housing.On described mainboard, there are ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module, described ARM controller is connected with DSP coprocessor by external bus, and described 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with ARM controller by bus; Described ARM controller by bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Described power acquisition adds interchange with direct current, and civil power adds the electric power input mode of accumulator.

Further, described DSP coprocessor is connected with storer SDRM and the input of compound screen, DSP coprocessor makes camera to the number of station board, carry out that target detection, image are cut apart, statistical counting, obtain number roughly on a current station board, according to number number to whether showing on station board LED screen, show with how many row the display strategies that carry out electronic stop plate LED.

Further, described direct current adds interchange, and the electric power input mode that civil power adds accumulator refers to station board main frame and peripheral hardware are first accessed to a total power switch, then battery main switch is connected to a UPS, UPS is connected with high-performance accumulator, last civil power or street lamp electricity access UPS; Under software support, have electric time, civil power or street lamp electricity are supplied with main frame and peripheral hardware by UPS bypass, charge to UPS simultaneously; When without electric time, UPS powers to main frame by accumulator.

Another object of the present invention is achieved in that a kind of control method of smart electronics station board main frame of calling out the stops based on distributed secondary temporal correlation, comprises the distributed secondary temporal and spatial correlations policing algorithm of calling out the stops, and step is as follows:

4.1), the public transport communication server ptpComServer that calls out the stops receives the packet that vehicle GPS comprises acquisition time ct, record simultaneously and send to the public transport server ptpServer that calls out the stops after time of reception st;

4.2), public transport is called out the stops, and server ptpServer obtains raw data packets and record obtains the time pt of raw data packets;

4.3), after the query degree D of calculating first order temporal and spatial correlations, send to station board main frame ptpTerminal:

4.4), station board main frame ptpTerminal is while receiving band the querys degree D prediction bag of calling out the stops public transport server ptpServer sending, and records current time of reception rt, simultaneously in conjunction with the information calculating second level temporal and spatial correlations query degree D ' of RFID;

4.5), the maximal value set before whether being greater than of judgement querys degree D ', if so, wait for RFID proofread and correct after demonstration, enter next step; If not, directly show;

4.6), judge in timeout interval whether have RFID to proofread and correct, if so, to show, if not, to server, to report to the police.

A control method for the smart electronics station board main frame of calling out the stops based on distributed secondary temporal correlation, comprises the display strategy of electronic stop plate LED, and step is as follows:

5.1), start;

5.2), according to system configuration judgement, whether at Night, if so, close LED, turn back to step 5.1), if not, enter next step;

5.3), judge whether to exit Night, if so, open LED screen, if not, turn back to step 5.1);

5.4), judge whether to regulate LED brightness, if so, regulate LED brightness, if not, enter next step;

5.5), judge whether to regulate LED to show line number, if so, regulate LED line number, if not, turn back to step 5.1).

, in station board system, substantially all use industrial computer now, even if use Embedded electronic station board system, also all in access civil power situation, move, but concerning true environment, civil power access is difficult to.It is also many big cities that electric power accesses this, as the reason of the electronic stop plate project failures such as Beijing and Shanghai.During the present invention adopts, main frame adopts the 12W embedded host of autonomous Design, significantly reduces power consumption, adopts direct current to add interchange simultaneously, and civil power adds the design of accumulator, makes station board can guarantee to work by day.Equally, for present station board system, the problem that the packet loss that the inevitable existence of every employing wireless transmission causes due to poor signal or packet postpone, once and introduced these problems, will give to call out the stops and cause interference, the impact simultaneously bringing causes misleading to citizen passenger exactly.All station board systems all do not have this problem to solve, and the secondary temporal and spatial correlations of the autonomous Design strategy of calling out the stops in the present invention is followed the relatively accurate principle and method of calling out the stops, and has solved this problem.The distributed secondary temporal and spatial correlations that the present invention the proposes strategy of calling out the stops, refer to: introduce data and wrap in delay in whole process and the distance of station board and vehicle location, use this two calculation of parameter degree of confidence simultaneously, the characteristic of temporal and spatial correlations is finally described by degree of confidence, and whether describe by this parameter the information of calling out the stops accurate, judge whether that this shows.Use this strategy, vehicle GPS information is carried out one-level prediction processing at server end and is provided the different information of calling out the stops of query degree, carries out secondary prediction processing after sending to main frame.Simultaneously the station board main frame on station board can and public transit vehicle communicate, for the backstage server of calling out the stops provides correction and rated capacity.Electronic stop plate can farthest offer level and smooth, correct information of forecasting of public transit vehicle of citizen like this, filtered the deferred message causing due to transmission delay, it is all correct to greatest extent making the information of calling out the stops that citizen receive, and just can accomplish that all information of calling out the stops can not cause misleading to citizen.

The present invention compares with traditional event detecting method of prior art, and tool has the following advantages and beneficial effect:

1, use the embedded device of independent research, station board equipment is integrated to greatest extent, and convenient wiring and project installation, significantly reduce power consumption simultaneously.

2, provide multiple electric power access, adapt to different electric power input status.

3, provide intelligent LED display strategy, can effectively reduce the LED display power consumption of a day, further reduce the overall power of station board, refer to the explanation of embodiment.

4, for calling out the stops, the strategy that we adopt is that the provided information of calling out the stops can not be brought misleading to citizen, adopts the distributed secondary temporal correlation of the autonomous Design strategy of calling out the stops just can meet this requirement.

Related terms is explained:

Query degree D: represent the credible journey of current predicted data, the span of degree query degree D is 0～+ ∞, when query degree is high, credibility is low, when query degree is low, credibility is high, when query degree is 0, represent current call out the stops completely credible, when be tending towards+∞ of query degree, show current call out the stops completely insincere;

Night: main frame enters the state of a dormancy, closing some of them is not main service, function and peripheral hardware, the LED screen that for example power consumption is higher, only surplus service, function and the peripheral hardware that maintains system groundwork, reduces the energy-conservation object of power consumption to arrive;

The relatively accurate principle of calling out the stops: when calling out the stops, the given information of calling out the stops need not guarantee correct completely, but can not give by bus the guidance making mistake to civic.

Accompanying drawing explanation

Fig. 1 is smart electronics station board main frame inner structure block diagram representation of the present invention.

Fig. 2 is smart electronics station board main frame outward appearance embodiment of the present invention.

Fig. 3 is the topological structure of smart electronics station board system of the present invention.

Fig. 4 is the distributed secondary temporal correlation of the present invention strategic process block diagram representation of calling out the stops.

Fig. 5 is intelligent LED display strategy FB(flow block) schematic diagram of the present invention.

Fig. 6 is that direct current of the present invention adds interchange, and civil power adds the electric power input mode schematic diagram of accumulator.

Terminological interpretation:

GPS:Global Positioning System, GPS;

LED:Light Emitting Diode, light emitting diode;

ARM:Advanced RISC Machines, compacting instruction set processor;

DSP:Digital Signal Processor, digital signal processor;

RFID:Radio Frequency Identification, radio-frequency (RF) identification;

PtpComServer:Public Transport Platform Communication Server, the public transport communication server of calling out the stops;

PtpServer:Public Transport platform, the public transport server of calling out the stops;

PtpTerminal:Public Transport Platform Terminal, station board main frame.

Embodiment

Provide by reference to the accompanying drawings embodiment and do further and illustrate .

Referring to Fig. 1, Fig. 2, autonomous Design an embedded electronic station board main frame ptpTerminal, this main frame adopts ARM+DSP design, simultaneously integrated multiple interfaces, strengthens its extendability greatly.Under the assistance of DSP, can accomplish 1 road video acquisition compression transmission, improve the integrated level of main frame.Comprise and be mainboard, power supply in the housing 1 of rectangular parallelepiped and housing.On described mainboard, there are ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module, described ARM controller is connected with DSP coprocessor by external bus, and described 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with ARM controller by bus; Described ARM controller by bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Described power acquisition adds interchange with direct current, and civil power adds the electric power input mode of accumulator.

In the main frame of electronic stop plate shown in Fig. 1, comprise that ARM control module, DSP image acquisition and processing module and communication module form.ARM control module is carried out for whole electronic stop plate being carried out to the reception of control in logic and server command, mainly comprise an ethernet network interface, three serial ports (RS485*1, RS232*2), a VGA interface, 1 SD card interface, 4 USB interface.DSP image acquisition and processing module is analyzed to control module and is provided Data support mainly to comprise video interface, IO mouth for station board number.Communication module is for communicating with back-end server, and design is in order to adapt to multiple network environment on hardware separately.System layer is used the built-in Linux operating system of autonomous cutting, cutting other unwanted interface and unit.

Shown in Fig. 2, can find out that mainframe box is very small and exquisite, reduce main frame and taken up room.System adopts Low-power Technology, and heat dissipation capacity is very little, does not need to carry out wind-cooling heat dissipating, does not design fan, and cabinet is sealing completely except wiring hole, reduces dust and enters, and reduces aging speed, has extended system serviceable life and has increased the reliability of hardware.In the application of public transport stop board its performance compared with industrial computer be designed with and without deficiency.Simultaneously, due to autonomous Design, reduced cost, and adopted embedded development, made its operating power only have 12W, the power consumption when comparing industrial computer and greatly reducing work.

Described DSP coprocessor is connected with storer SDRM and the input of compound screen, DSP coprocessor makes camera to the number of station board, carry out that target detection, image are cut apart, statistical counting, obtain number roughly on a current station board, according to number number to whether showing on station board LED screen, show and carry out intelligent decision with how many row.Fig. 6 has shown that described direct current adds interchange, the electric power input mode that civil power adds accumulator refers to station board main frame and peripheral hardware is first accessed to a total power switch, then battery main switch is connected to a UPS, UPS is connected with high-new energy storage device, last civil power or street lamp electricity access UPS; Under software support, have electric time, civil power or street lamp electricity, by UPS bypass access host and peripheral hardware, charge to UPS simultaneously; When without electric time, UPS powers to main frame by accumulator.

In electronic bus-stop system when packet also can be regarded infinite delay as because unstable networks causes the large or packet loss of delay.We can think that these data are expired data, network delay at the moment, the station board soon arriving for this car, easily to citizen, cause greatly and mislead, but with regard to the part station board to away from this car, the misleading effect causing to citizen is far smaller than from the station board close to this car, even can be described as not impact completely.So the time is that the delay of packet and space (being reduced to the distance that refers to leaving from station of vehicle here) are being related to whether this shows this information of calling out the stops for station board is called out the stops.The relatively accurate principle of calling out the stops, allowing under data packet delay and packet drop, does not cause misleading to citizen exactly, causes the unbelieving principle of the information of calling out the stops.

Electronic station board system topological structure at Fig. 3, vehicle-bone 3 G sends to the public transport communication server ptpComServer that calls out the stops by the positional information of vehicle, the public transport communication server ptpComServer that calls out the stops carries out giving after fast processing the public transport server ptpServer that calls out the stops to data, public transport call out the stops server ptpServer by Data dissemination to each station board.

At distributed secondary temporal correlation, call out the stops in strategy, as shown in Figure 5, first order temporal correlation is called out the stops the vehicle that sends according to public transit vehicle for server end to information leaving from station (referring to receive GPS message) or extrapolate based on experience value (when referring to GPS information dropout or postponing) calculates the information of calling out the stops of band query degree D, it is emphasized that this strategy can effectively avoid the problem of failing to report, jumping report and do not report because vehicle GPS damages or the GPS information dropout that causes due to network delay is brought.The second level is that station board end and public transit vehicle install far Distance RFID (Radio Frequency Identification additional, radio-frequency (RF) identification), whether according to the call out the stops query degree of calling out the stops in bag that calculates of one-level temporal and spatial correlations, select immediately to forecast or wait for after RFID revises and call out the stops, having station board end can issue back-end server and carry out the revisal of calling out the stops in rear end having information of vehicles that querys degree the is high data after RFID correction simultaneously.

Query degree D is calculated as follows:

The secondary temporal correlation tactful idiographic flow of calling out the stops is as follows: public transport is called out the stops server ptpServer while receiving prediction bag as shown in Figure 3, first writes down current timestamp pt, and then, according to temporal correlation first order calculation query degree, computing formula is as follows:

（1）

A wherein, B, C is constant, dis by bus according to the distance (being herein stop spacing) of transmission station board.The information reliability of calling out the stops that query degree D is larger is poorer, and more I is large by SHIN-ETSU HANTOTAI.

After the information of forecasting with query degree D, be distributed to station board ptpTerminal(Public Transport Platform Terminal, station board main frame) after, the timestamp rt of the information of calling out the stops received in ptpTerminal record.And then calculate secondary degree of confidence D ' according to temporal correlation, computing formula is as follows:

（2）

Wherein D is one-level degree of confidence, R=1 when station board is received that rfid card is auxiliary and called out the stops, other situation R=0.T is constant, gets the average retardation of the end-to-end transmission of 3G network herein.

D ' value in-scope and display strategy that station board main frame ptpTerminal calculates according to formula (2) decide how to show this information of calling out the stops, for example, be show immediately or do not show.In addition, for the larger information of calling out the stops not showing of D ', wait for the RFID revisal of calling out the stops.Meanwhile, if receive, RFID revises but does not receive the vehicle of prediction message, station board main frame to the back-end dispatching system warning message is provided.

Fig. 4 shown and comprised the distributed secondary temporal and spatial correlations policing algorithm of calling out the stops, and step is as follows:

4.1), the communication server ptpComServer of bus station receives the packet that vehicle GPS comprises acquisition time ct, record simultaneously and send to the public transport server ptpServe that calls out the stops after time of reception st;

4.2), public transport is called out the stops, and server ptpServer obtains raw data packets and record obtains the time pt of raw data packets;

4.3), after the query degree D of calculating first order temporal and spatial correlations, send to station board main frame ptpTerminal;

4.4), station board main frame ptpTerminal is while receiving band the querys degree D prediction bag of calling out the stops public transport server ptpServer sending, and records current time of reception rt, simultaneously in conjunction with the information calculating second level temporal and spatial correlations query degree D ' of RFID;

4.5), the maximal value set before whether being greater than of judgement querys degree D ', if so, wait for RFID proofread and correct after demonstration, enter next step; If not, directly show;

4.6), judge in timeout interval whether have RFID to proofread and correct, if so, to show, if not, to server, to report to the police.The distributed secondary temporal and spatial correlations resolution policy of the autonomous Design that the present invention provides, this strategy proposes and follows the relatively accurate principle of calling out the stops, and has solved error message or misleading information that the time delay that causes due to network problem and bottom pour ladle bring to user.

LED display strategy:

For the LED screen of the power consumption of electronic station board system, the present invention has designed a series of patterns, and the demonstration of regulation and control LED screen that can intelligence, reaches using electricity wisely to greatest extent.Designed the strategy that LED shows for this reason, according to this display strategy, can adjust for showing the line number of the information of calling out the stops by the period, the platform number that can analyze by DSP is dynamically adjusted the line number of calling out the stops simultaneously, can maximized reduction LED power consumption.Can regulate according to ambient brightness the brightness of LED simultaneously.Night, regulates LED brightness and regulates the priority of LED line number to reduce successively.Only ought exit Night, just can automatically open the function that regulates LED brightness and regulate LED line number simultaneously.LED intelligent control meets following principle simultaneously:

LED has dormancy and work two states;

Under duty, the switching of display strategy has two kinds of modes, a kind of static state of carrying out for time period that can arrange is switched, another kind of for by crossing DSP, camera being carried out to target detection, image are cut apart, obtains number roughly on a current station board after statistical counting the number of station board, by this number, dynamically switch; LED dormant state priority is the highest, and can only be suitable for static switching mode;

Above two kinds of switching modes can arrange priority;

While dynamically switching, the intelligent computation of main frame energy goes out a maximum line number LenMax that shows, LED can only be used at most the capable demonstration of calling out the stops of LenMax, even also only showed with LenMax is capable when current station board enters circuit over LenMax, what surpass switches with page turning form.Power consumption in the time of can reducing work like this.

Fig. 5 has shown the display strategy that comprises electronic stop plate LED, and step is as follows:

5.1), start;

5.2), according to system configuration judgement, whether at Night, if so, close LED, turn back to step 5.1) step, if not, enter next step;

5.3), judge whether to exit Night, if so, open LED screen, if not, turn back to step 5.1);

5.4), judge whether to regulate LED brightness, if so, regulate LED brightness, if not, enter next step;

5.5), judge whether to regulate LED to show line number, if so, regulate LED line number, if not, turn back to step 5.1) step.

The present invention adopts the embedded host of the 12W low-power consumption of independent research in host side, in host side, just reduced to a certain extent overall power; Adopt in addition direct current to add interchange, civil power adds the method for accumulator, preferably resolves electronic stop plate contact problem, meanwhile, for the LED screen that power consumption is higher, takes intelligent LED regulation strategy, can guarantee again to reduce a part of power consumption.So must make station board system well works in the situation that accessing without civil power.Through the experiment of 450 electronic stop plates in Chengdu, guarantee that lighting rate reaches more than 90%, can be good at the service into citizen.In order to solve this problem of packet, control method of the present invention provides the distributed secondary temporal and spatial correlations resolution policy of an autonomous Design, this strategy proposes and follows the relatively accurate principle of calling out the stops, and has solved error message or misleading information that the time delay that causes due to network problem and bottom pour ladle bring to user.

Its whole course of work is as follows: first, all devices comprises that server guarantees time consistency in the time of must carrying out school by time server when initialization.Public transport vehicle-mounted GPS Real-time Obtaining is when the position of vehicle in front, after this positional information and acquisition time stamp ct is merged, give the backstage public transport communication server ptpComServer that calls out the stops and calculate, produce timestamp ct that the original prediction message of calling out the stops comprises the timestamp st that handles after vehicle position information and collection simultaneously and then send to the public transport server ptpServer that calls out the stops to carry out analyzing and processing and calculate the different information of forecasting of query degree.Whether electronic stop plate host computer system select immediately to forecast or wait for after RFID revises and call out the stops according to the call out the stops query degree of calling out the stops in bag that calculates of one-level temporal and spatial correlations, and existing station board main frame can be issued back-end server and carries out the revisal of calling out the stops in rear end having information of vehicles that querys degree the is high data after RFID correction simultaneously.If receive, RFID revises but does not receive the vehicle of prediction message, station board main frame to the back-end dispatching system warning message is provided.

Claims (4)

1. a smart electronics station board main frame of calling out the stops based on distributed secondary temporal and spatial correlations, comprises and is mainboard, power supply in the housing (1) of rectangular parallelepiped and housing; On mainboard, there are ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module; It is characterized in that, described ARM controller is connected with DSP coprocessor by external bus, and described 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with ARM controller by bus; Described ARM controller by bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Described power acquisition adds interchange with direct current, and civil power adds the electric power input mode of accumulator;

Described DSP coprocessor is connected with storer SDRM and the input of compound screen, DSP coprocessor makes camera to the number of station board, carry out that target detection, image are cut apart, statistical counting, obtain number roughly on a current station board, then according to number number to whether showing on station board LED screen, show and carry out intelligent decision with how many row.

2. smart electronics station board main frame according to claim 1, it is characterized in that, described direct current adds interchange, the electric power input mode that civil power adds accumulator refers to station board main frame and peripheral hardware is first accessed to a total power switch, then battery main switch is connected to a UPS, UPS is connected with high-performance accumulator, last civil power or street lamp electricity access UPS; Under software support, have electric time, civil power or street lamp electricity are supplied with main frame and peripheral hardware by UPS bypass, charge to UPS simultaneously; When without electric time, UPS powers to main frame by accumulator.

3. the control method of smart electronics station board main frame according to claim 1, comprises the distributed secondary temporal and spatial correlations policing algorithm of calling out the stops, and it is characterized in that, step is as follows:

4.1), the public transport communication server ptpComServer that calls out the stops receives the packet that vehicle GPS comprises acquisition time ct, record simultaneously and send to the public transport server ptpServer that calls out the stops after time of reception st;

4.2), public transport is called out the stops, and server ptpServer obtains raw data packets and record obtains the time pt of raw data packets;

4.3), after the query degree D of calculating first order temporal and spatial correlations, send to station board main frame ptpTerminal:

4.4), station board main frame ptpTerminal is while receiving band the querys degree D prediction bag of calling out the stops public transport server ptpServer sending, and records current time of reception rt, simultaneously in conjunction with the information calculating second level temporal and spatial correlations query degree D ' of RFID;

4.5), the maximal value set before whether being greater than of judgement querys degree D ', if so, wait for RFID proofread and correct after demonstration, enter next step; If not, directly show;

4.6), judge in timeout interval whether have RFID to proofread and correct, if so, to show, if not, to server, to report to the police; Described query degree D: represent current predicted data credibility, the span of query degree D is 0～+ ∞, when query degree is high, credibility is low, when query degree is low, credibility is high, when query degree is 0, represent current call out the stops completely credible, when be tending towards+∞ of query degree, show current call out the stops completely insincere; Query degree D is calculated as follows:

A, the public transport server ptpServer that calls out the stops receives when bag prediction, first writes down current timestamp pt, and then, according to temporal correlation first order calculation query degree, computing formula is as follows:

$D=\frac{A*(\mathrm{pt}-\mathrm{st})*(\mathrm{st}-\mathrm{ct})}{B*(\mathrm{dis}+C)}---\left(1\right)$

A wherein, B, C is constant, dis by bus according to the distance (being herein stop spacing) of transmission station board, the information reliability of calling out the stops that query degree D is larger is poorer, more I is large by SHIN-ETSU HANTOTAI;

B, after the information of forecasting with query degree D, be distributed to after station board ptpTerminal (Public Transport Platform Terminal, station board main frame), the timestamp rt of the information of calling out the stops received in ptpTerminal record.And then calculate secondary query degree D ' according to temporal correlation, computing formula is as follows:

$D^{\′}=D*(1+\frac{\mathrm{rt}-\mathrm{pt}}{T})*(1-R)---\left(2\right)$

Wherein D is one-level query degree, R=1 when station board is received that rfid card is auxiliary and called out the stops, and other situation R=0, T is constant, gets the average retardation of the end-to-end transmission of 3G network herein;

D ' value in-scope and display strategy that c, station board main frame ptpTerminal calculate according to formula (2) decide how to show this information of calling out the stops, and are to show immediately or do not show; For the larger information of calling out the stops not showing of D ', wait for the RFID revisal of calling out the stops; Meanwhile, if receive, RFID revises but does not receive the vehicle of prediction message, station board main frame to the back-end dispatching system warning message is provided.

4. the control method of smart electronics station board main frame according to claim 3, comprises the intelligent decision that electronic stop plate LED shows, it is characterized in that, step is as follows:

5.1), start;

5.2), according to system configuration judgement, whether at Night, if so, close LED, turn back to step 5.1); If not, enter next step;

5.3), judge whether to exit Night, if so, open LED screen, if not, turn back to step 5.1);

5.4), judge whether to regulate LED brightness, if so, regulate LED brightness, if not, enter next step;

5.5), judge whether to regulate LED to show line number, if so, regulate LED line number, if not, turn back to step 5.1).