CN102629421A - 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
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 Download PDFInfo
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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
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 the smart electronics station board main frame and the control method thereof of forecast leaving from station, intellectual analysis.
Background technology
Developing of automobile industry is quick and convenient for the mankind have brought, 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 the every profession and trade, and the traffic congestion phenomenon is also more and more serious.In order to reach the sustainable use and the sustainable development of traffic that realizes environmental resource, people begin emphasis " Green Travel ".
Bus trip is a kind of energy savings, improves efficiency, reduces the trip mode of polluting, be good for one's health, take into account efficient as a kind of popular trip mode; " Green Travel " advocated and paid attention in more and more cities.
In the bus trip, run into a series of like this problem for city's witenagemot: the interim modification to bus routes can not in time be understood, and causes the wait as long at platform; Citizen are uncertain to the time that bus is about to enter the station, and it is pressed for time the time, can only select other trip modes.Give birth to because of fortune for solving these problem electronic stop plates of civic.And present most of electronic stop plate adopts the solution of industrial computer, even adopt the civil power that also must have in 24 hours of embedded host solution to insert, can't adapt to the rugged surroundings of current electronic stop plate operation fully.
Existing station board networking simultaneously has three kinds of modes: MANET, operator is wired, operator is wireless.The words cost of MANET is very big, and quantities is also very big, the large batch of station board construction of incompatibility; Operator is wired, and quantities is huge, and under the few situation of amount, cost is huge.
And wireless inevitably can the introducing because the problem that packet loss that poor signal causes or packet postpone is brought great interference to calling out the stops of remaining employing operator, the influence that brings simultaneously causes misleading for exactly citizen passenger.For example adopt operator's wireless access way in the patent 200710045444.7 equally; His operational process is roughly following; Vehicle is by the vehicle GPS Information Monitoring; Then the information of gathering is transferred to server through the wireless GPRS mode, server sends to station board with the information of calling out the stops after calculating then.
But station board is not considered electrical problems, does not consider the influence that wireless transmission causes simultaneously.So incompatibility station board complex environment can not guarantee the rate of reaching the standard grade of station board; Two in a single day because network problem causes delay or packet loss, must give to call out the stops and bring problem, causes the civic is misled.The major technique defect map that exists at present is present:
(1) forecast strategy is single, maybe be because network delay or vehicle-bone global positioning system (Global Positioning System, GPS) fault causes that to misrepresent deliberately, fail to report, jump newspaper 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 the platform equally, for the 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 direct commercial power supply, and equipment normal operation duration is generally on the low side;
(4) lack multi-stage, energy-saving work control model, use light emitting diode (Light Emitting Diode, LED) in the station board of screen, most station board main frame all reckons without the LED electrical problem, what have also just regulates LED brightness;
(5) apparatus for establishing, can't in time not react to operator when the station board equipment failure from monitoring, has improved maintenance cost;
(6) generally all use industrial computer as main control system, power consumption can be very big like this, and the operation troubles rate is high;
(7) use the industrial computer wiring complicated, comparatively trouble is installed, be not easy to safeguard, and the function that does not generally all have the effective integration IMAQ to analyze.
Summary of the invention
The purpose of this invention is to provide a kind of low-power-consumption embedded main frame the equipment on the electronic stop plate is carried out 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 thereupon bringing of misrepresenting deliberately, failing to report and jump newspaper of bus stop reporting strategy.
The objective of the invention is to realize like this: a kind of smart electronics station board main frame of calling out the stops based on distributed secondary temporal correlation comprises mainboard, power supply in the housing that is rectangular parallelepiped and the housing.ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are arranged on the said mainboard; Said ARM controller is connected with the DSP coprocessor through external bus, and said 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with the ARM controller through bus; Said ARM controller through bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Said power supply adopts direct current to add interchange, and civil power adds the electric power input mode of accumulator.
Further; Said DSP coprocessor and storer SDRM and compoundly look the screen input and be connected; The DSP coprocessor makes camera carry out target detection, image segmentation, statistical counting to the number of station board; Obtain number roughly on the current station board, according to how many display strategies of number to whether showing on the station board LED screen, use how much electronic stop plate LED is carried out in capable demonstration.
Further; Said direct current adds interchange, and the electric power input mode that civil power adds accumulator is meant station board main frame and total power switch of peripheral hardware elder generation access, then battery main switch is connected to a UPS; UPS is connected with the high-performance accumulator, and last civil power or street lamp electricity insert UPS; Under the software support, have electric the time, civil power or street lamp electricity are supplied with main frame and peripheral hardware through the UPS bypass, charge to UPS simultaneously; When not having electricity, UPS supplies power to main frame through 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 following:
4.1), the public transport communication server ptpComServer that calls out the stops receives the packet that vehicle GPS comprises acquisition time ct, sends to the public transport server ptpServer that calls out the stops simultaneously behind the recorder time 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), calculate and to send to station board main frame ptpTerminal behind the query degree D of first order temporal and spatial correlations:
4.4), station board main frame ptpTerminal receives when band the querys degree D prediction of calling out the stops public transport server ptpServer sending is wrapped, and writes down current time of reception rt, combines the information calculations second level temporal and spatial correlations query degree D ' of RFID simultaneously;
4.5), judge querys degree D ' whether greater than before the maximal value set, if wait for that RFID proofreaies and correct the back demonstration, gets into next step; If, directly do not show;
4.6), judge whether have RFID to proofread and correct in the timeout interval, if show, if not, report to the police to server.
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 display strategy of electronic stop plate LED, and step is following:
5.1), the beginning;
5.2), judge according to system configuration, whether at Night, if close LED, turn back to step 5.1), if not, get into next step;
5.3), judge whether to withdraw from Night, if open LED screen, if not, turn back to step 5.1);
5.4), judge whether need to regulate LED brightness, if regulate LED brightness, if not, get into next step;
5.5), judge whether need to regulate LED and show line number, if regulate the LED line number, if not, turn back to step 5.1).
In the station board system, basically all use industrial computer now, even use Embedded electronic station board system, also all under access civil power situation, move, but concerning true environment, civil power inserts and is difficult to.It also is many big cities that electric power inserts this, as the reason of electronic stop plate projects such as Beijing and Shanghai failure.Main frame adopted the 12W embedded host of autonomous Design during the present invention adopted, and reduced power consumption significantly, adopted 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 inevitable existence of every employing wireless transmission is because the problem that the packet loss that causes of poor signal or packet postpone, and in case introduced these problems; Will give to call out the stops and cause interference, the influence that brings simultaneously causes misleading for exactly citizen passenger.All station board systems all do not have this problem is solved, and the secondary temporal and spatial correlations of the autonomous Design strategy of calling out the stops among the present invention is followed relatively accurate principle and the method for 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; Be meant: introduce data and wrap in delay and the distance of station board and vehicle location in the whole process; Use this two calculation of parameter degree of confidence simultaneously; The final characteristic of using degree of confidence to describe temporal and spatial correlations, and whether accurate, judge whether that this shows through this parameter if describing the information of calling out the stops.Use should strategy, and vehicle GPS information is carried out the one-level prediction processing at server end and provided the different information of calling out the stops of query degree, carries out the secondary prediction processing after sending to main frame.Simultaneously the station board main frame on the station board can communicate with public transit vehicle, 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 because the deferred message that transmission delay causes; The information of calling out the stops that citizen are received all is correct to greatest extent, 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, has following advantage 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 reduce power consumption simultaneously significantly.
2, provide multiple electric power to insert, adapt to different electric power input status.
3, the intelligent LED display strategy is provided, can reduces one day power consumption of LED display effectively, further reduce the overall power of station board, see the explanation of embodiment for details.
4, for calling out the stops, the strategy that we adopt is that the information of calling out the stops that is provided 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 satisfy this requirement.
Relevant explanation of nouns:
Query degree D: represent the credible journey of current predicted data; The span of degree query degree D is 0～+ ∞; Credibility was low when the query degree was high, and credibility was high when the query degree was low, when the query degree is 0; Represent current call out the stops credible fully, when the query degree be tending towards+then show during ∞ current call out the stops insincere fully;
Night: main frame gets into the state of a dormancy, and closing some of them is not main service, function and peripheral hardware, and for example the higher LED screen of power consumption only remains service, function and the peripheral hardware of keeping system's groundwork, reduces the power consumption purpose of energy saving 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 the guidance that makes mistake by bus to the civic.
Description of drawings
Fig. 1 is a smart electronics station board main frame inner structure block diagram representation according to the invention.
Fig. 2 is smart electronics station board main frame outward appearance embodiment according to the invention.
Fig. 3 is the topological structure of smart electronics station board system according to the invention.
Fig. 4 is the distributed secondary temporal correlation according to the invention strategic process block diagram representation of calling out the stops.
Fig. 5 is an intelligent LED display strategy FB(flow block) synoptic diagram according to the invention.
Fig. 6 is that direct current according to the invention adds interchange, and civil power adds the electric power input mode synoptic 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, 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, the station board main frame.
Embodiment
Provide embodiment and do further in conjunction with accompanying drawing and specify
.
Referring to Fig. 1, Fig. 2, autonomous Design an embedded electronic station board main frame ptpTerminal, this main frame adopts the ARM+DSP design, simultaneously integrated multiple interfaces makes its extendability strengthen greatly.Under the assistance of DSP, can accomplish 1 road video acquisition Compression and Transmission, improve the integrated level of main frame.Comprise mainboard, power supply in the housing 1 that is rectangular parallelepiped and the housing.ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are arranged on the said mainboard; Said ARM controller is connected with the DSP coprocessor through external bus, and described 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with the ARM controller through bus; Said ARM controller through bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Said power supply adopts direct current to add interchange, and civil power adds the electric power input mode of accumulator.
Comprise in the electronic stop plate main frame shown in Figure 1 that ARM control module, DSP image acquisition and processing module and communication module constitute.The ARM control module is used for whole electronic stop plate is carried out the reception of in logic control and server command and carries out; Mainly comprise an ethernet network interface, three serial ports (RS485*1, RS232*2), a VGA interface, 1 SD card, 4 USB interfaces.DSP image acquisition and processing module is used for the station board number and analyzes to control module and provide the data support mainly to comprise video interface, IO mouth.Communication module then is used for communicating with back-end server, and design is in order on hardware, to adapt to the multiple network environment separately.System layer is then used the built-in Linux operating system of autonomous cutting, cutting other unwanted interface and unit.
Shown in Figure 2ly 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, need not carry out wind-cooling heat dissipating, does not design fan, and cabinet is complete closed except that wiring hole, reduces dust and gets into, and reduces aging speed, has prolonged system's 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 do not have deficiency.Simultaneously because autonomous Design has reduced cost, and adopt embedded development, make its operating power have only 12W, the power consumption when comparing industrial computer and greatly reducing work.
Said DSP coprocessor and storer SDRM and compoundly look the screen input and be connected; The DSP coprocessor makes camera carry out target detection, image segmentation, statistical counting to the number of station board; Obtain number roughly on the current station board, to whether showing, use how many row on the station board LED screen show and carry out intelligent decision according to what of number.Fig. 6 has shown that said direct current adds interchange; The electric power input mode that civil power adds accumulator is meant station board main frame and total power switch of peripheral hardware elder generation access; Then battery main switch is connected to a UPS, UPS is connected with high-new energy storage device, and last civil power or street lamp electricity insert UPS; Under the software support, have electric the time, civil power or street lamp electricity insert main frame and peripheral hardware through the UPS bypass, charge to UPS simultaneously; When not having electricity, UPS supplies power to main frame through accumulator.
In electronic bus-stop system, work as packet because unstable networks causes delay also can regard infinite delay as than big or packet loss.We can think that these data are expired data; Network delay at the moment; The station board that soon arrives for this car causes greatly to citizen to mislead easily, but with regard to the part station board away from this car; The misleading effect that causes to citizen is far smaller than from the near station board of this car, even can be described as not influence fully.So the time is that delay and the space (being reduced to the distance that refers to leaving from station of vehicle here) of packet concerning 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 the 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 with the positional information of vehicle; The public transport communication server ptpComServer that calls out the stops carries out giving after the fast processing public transport server ptpServer that calls out the stops to data, and the public transport server ptpServer that calls out the stops gives each station board with data distribution.
In distributed secondary temporal correlation is called out the stops strategy; As shown in Figure 5; First order temporal correlation call out the stops for server end according to vehicle that public transit vehicle sent to information leaving from station (referring to receive the GPS message) or rule of thumb value extrapolate when postponing (refer to GPS information dropout or) calculate the information of calling out the stops of being with query degree D; It is emphasized that this strategy can effectively be avoided because vehicle GPS damages or because the problem of failing to report, jumping newspaper and do not report that the GPS information dropout that network delay causes is brought.The second level is that station board end and public transit vehicle install far Distance RFID (Radio Frequency Identification additional; RF identification); Select to forecast or wait for whether immediately after RFID revises and call out the stops again that having the station board end simultaneously can issue back-end server and carry out the revisal of calling out the stops in the rear end having the data of the high information of vehicles of querys degree after through the RFID correction according to call out the stops query degree in the bag of calling out the stops that calculates of one-level temporal and spatial correlations.
The calculating of query degree D is following:
The secondary temporal correlation tactful idiographic flow of calling out the stops is following: public transport as shown in Figure 3 is called out the stops server ptpServer when receiving the prediction bag, writes down current timestamp pt earlier, and according to temporal correlation first order calculation query degree, computing formula is following then:
（1）
A wherein, B, C are constant, dis by bus according to the distance (here being stop spacing) of transmission station board.The information reliability of calling out the stops that query degree D is big more is poor more, and it is big that I is leaned on SHIN-ETSU HANTOTAI more.
Wait to have be distributed to station board ptpTerminal (Public Transport Platform Terminal, station board main frame) behind the information of forecasting of query degree D after, the timestamp rt of the information of calling out the stops received in the ptpTerminal record.And then according to temporal correlation calculating secondary degree of confidence D ', computing formula is following:
Wherein D is the 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 a constant, gets the average retardation of the end-to-end transmission of 3G network here.
Station board main frame ptpTerminal decides how to show this information of calling out the stops according to D ' value in-scope and the display strategy that formula (2) calculates, and for example is to show immediately or do not show.In addition, for the bigger information of calling out the stops that does not promptly show of D ', then wait for the RFID revisal of calling out the stops.Simultaneously, revise but do not receive the vehicle of prediction message if receive RFID, the station board main frame then to the back-end dispatching system warning message is provided.
Fig. 4 has shown and has comprised the distributed secondary temporal and spatial correlations policing algorithm of calling out the stops that step is following:
4.1), the communication server ptpComServer of bus station receives the packet that vehicle GPS comprises acquisition time ct, sends to the public transport server ptpServe that calls out the stops simultaneously behind the recorder time 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), send to station board main frame ptpTerminal after calculating the query degree D of first order temporal and spatial correlations;
4.4), station board main frame ptpTerminal receives when band the querys degree D prediction of calling out the stops public transport server ptpServer sending is wrapped, and writes down current time of reception rt, combines the information calculations second level temporal and spatial correlations query degree D ' of RFID simultaneously;
4.5), judge querys degree D ' whether greater than before the maximal value set, if wait for that RFID proofreaies and correct the back demonstration, gets into next step; If, directly do not show;
4.6), judge whether have RFID to proofread and correct in the timeout interval, if show, if not, report to the police to server.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 because error message or the misleading information that time-delay that network problem causes and bottom pour ladle bring to the user.
The 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, makes the demonstration of the regulation and control LED screen that it can intelligence, reaches using electricity wisely to greatest extent.Designed the strategy of LED demonstration for this reason, can adjust the line number that be used to show the information of calling out the stops by the period, can dynamically adjust the line number of calling out the stops through the platform number that DSP analyzes simultaneously according to this display strategy, can maximized reduction LED power consumption.Can regulate simultaneously the brightness of LED according to ambient brightness.Night, the priority of regulating LED brightness and adjusting LED line number reduces successively.Simultaneously only ought withdraw from Night, just can open automatically and regulate LED brightness and the function of regulating the LED line number.The LED intelligent control satisfies following principle simultaneously:
LED has dormancy and work two states;
The switching of display strategy has dual mode under the duty; A kind of static state of carrying out for time period that can be provided with is switched; Another kind of for camera being carried out obtaining behind target detection, image segmentation, the statistical counting on the current station board number roughly to the number of station board through crossing DSP, dynamically switch through this number; LED dormant state priority is the highest, and can only be suitable for static switching mode;
More than two kinds of switching modes priority can be set;
When dynamically switching; Main frame can intelligence computation go out a maximum line number LenMax that shows; LED can only use the capable demonstration of calling out the stops of LenMax at most, also only shows with LenMax is capable that what surpass then switched with the page turning form even current station board advances circuit when surpassing LenMax.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 following:
5.1), the beginning;
5.2), judge according to system configuration, whether at Night, if close LED, turn back to step 5.1) step, if not, get into next step;
5.3), judge whether to withdraw from Night, if open LED screen, if not, turn back to step 5.1);
5.4), judge whether need to regulate LED brightness, if regulate LED brightness, if not, get into next step;
5.5), judge whether need to regulate LED and show line number, if regulate the LED line number, if not, turn back to step 5.1) step.
The present invention has just reduced overall power at the embedded host of the 12W low-power consumption of host side employing independent research in host side to a certain extent; Adopt direct current to add interchange in addition, civil power adds the method for accumulator, preferably resolves electronic stop plate contact problem, simultaneously, takes intelligent LED to regulate strategy for the LED screen that power consumption is higher, can guarantee to reduce a part of power consumption again.So must make station board system well works under the situation that no civil power inserts.Through the experiment of 450 electronic stop plates in Chengdu, guarantee that lighting rate reaches more than 90%, can be good at 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 because error message or the misleading information that time-delay that network problem causes and bottom pour ladle bring to the user.
Its entire work process is following: at first, all devices comprises that the time that guarantees when server must carry out the school through time server when initialization is consistent.Public transport vehicle-mounted GPS obtains the position of current vehicle in real time; This positional information and acquisition time stabbed give the public transport communication server ptpComServer that calls out the stops in backstage after ct merges and calculate, produces original calling out the stops and predict that message comprises that simultaneously the timestamp ct of the timestamp st that handles behind the vehicle position information and collection sends to the public transport server ptpServer that calls out the stops then and carries out analyzing and processing and calculate query degree different predicting information.Whether the electronic stop plate host computer system select immediately to forecast or wait for after RFID revises and call out the stops according to call out the stops query degree in the bag of calling out the stops that calculates of one-level temporal and spatial correlations, and existing simultaneously station board main frame can be issued back-end server and carries out the revisal of calling out the stops in the rear end having the data of the high information of vehicles of querys degree after through the RFID correction.Revise but do not receive the vehicle of prediction message if receive RFID, the station board main frame then to the back-end dispatching system warning message is provided.
Claims (5)
1. smart electronics station board main frame of calling out the stops based on distributed secondary temporal and spatial correlations comprises mainboard, power supply in the housing (1) that is rectangular parallelepiped and the housing; ARM controller, DSP coprocessor, 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are arranged on the mainboard; It is characterized in that said ARM controller is connected with the DSP coprocessor through external bus, said 3G communication module, mixed-media network modules mixed-media, USB module, FLASH module are connected with the ARM controller through bus; Said ARM controller through bus integrated CAN interface, USB interface, GPIO port expander, synchronous/asynchronous serial ports; Said power supply adopts direct current to add interchange, and civil power adds the electric power input mode of accumulator.
2. smart electronics station board main frame according to claim 1; It is characterized in that; Said DSP coprocessor and storer SDRM and compoundly look the screen input and be connected; The DSP coprocessor makes camera carry out target detection, image segmentation, statistical counting to the number of station board, obtains number roughly on the current station board, according to how many display strategies to whether showing on the station board LED screen, use how much electronic stop plate LED is carried out in capable demonstration of number.
3. smart electronics station board main frame according to claim 1; It is characterized in that; Said direct current adds interchange, and the electric power input mode that civil power adds accumulator is meant station board main frame and total power switch of peripheral hardware elder generation access, then battery main switch is connected to a UPS; UPS is connected with the high-performance accumulator, and last civil power or street lamp electricity insert UPS; Under the software support, have electric the time, civil power or street lamp electricity are supplied with main frame and peripheral hardware through the UPS bypass, charge to UPS simultaneously; When not having electricity, UPS supplies power to main frame through accumulator.
4. 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 following:
4.1), the public transport communication server ptpComServer that calls out the stops receives the packet that vehicle GPS comprises acquisition time ct, sends to the public transport server ptpServer that calls out the stops simultaneously behind the recorder time 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), calculate and to send to station board main frame ptpTerminal behind the query degree D of first order temporal and spatial correlations:
4.4), station board main frame ptpTerminal receives when band the querys degree D prediction of calling out the stops public transport server ptpServer sending is wrapped, and writes down current time of reception rt, combines the information calculations second level temporal and spatial correlations query degree D ' of RFID simultaneously;
4.5), judge querys degree D ' whether greater than before the maximal value set, if wait for that RFID proofreaies and correct the back demonstration, gets into next step; If, directly do not show;
4.6), judge whether have RFID to proofread and correct in the timeout interval, if show, if not, report to the police to server.
5. the control method of smart electronics station board main frame according to claim 2 comprises the display strategy of electronic stop plate LED it is characterized in that step is following:
5.1), the beginning;
5.2), judge according to system configuration, whether at Night, if close LED, turn back to step 5.1); If, do not get into next step;
5.3), judge whether to withdraw from Night, if open LED screen, if not, turn back to step 5.1);
5.4), judge whether need to regulate LED brightness, if regulate LED brightness, if not, get into next step;
5.5), judge whether need to regulate LED and show line number, if regulate the LED line number, if not, turn back to step 5.1).
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| CN103198643A (en) * | 2013-03-11 | 2013-07-10 | 四川川大智胜软件股份有限公司 | Embedded high-definition liquid crystal display (LCD) multi-media intelligent electronic station board and station reporting method thereof |
| CN105516652A (en) * | 2015-11-23 | 2016-04-20 | 杨明 | Intelligent LED street lamp |
| CN112700671A (en) * | 2020-12-01 | 2021-04-23 | 华录智达科技有限公司 | Real-time bus monitoring method and system based on class chart |
| CN113947924A (en) * | 2021-04-12 | 2022-01-18 | 重庆沅蔚科技有限公司 | Traffic signal synchronous and asynchronous control system |
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| CN113947924A (en) * | 2021-04-12 | 2022-01-18 | 重庆沅蔚科技有限公司 | Traffic signal synchronous and asynchronous control system |
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