Background technology
Traffic intersection, refers to two or more road intersection.This is the only way which must be passed that vehicle and pedestrian collect, turn to and evacuate, and is the throat of traffic.Therefore, correctly design intersection, rationalization, management crossing traffic, be the importance that improves road passage capability and ensure traffic safety.Intersection divides level-crossing, traffic circle and traffic interchange.Level-crossing is that road intersects the crossing forming in same plane.Conventionally there are the forms such as T shape, Y shape, cruciform, X-shaped, dislocation, annular.In the middle of Shi crossing, traffic circle, a rotary island (central island) that area is larger is set, vehicle interweaves and enters circuit, Bing Rao island one-way traffic.Traffic interchange is that road does not intersect the crossings on different level forming in same plane.
In urban road travels, automobile is the maximum place of spended time from origin to destination, is not the normal travel phase at road, but waiting lamp or being blocked near stage road traffic crossing at road traffic crossing.Along with scientific and technological progress and the raising of people's living standard, urbanization progress is constantly expanded, in city, vehicle is more and more, urban road also more and more blocks up, especially in peak period on and off duty and festivals or holidays, take the too much time of driver at road traffic crossing place, not only affect driver's mood, easily cause traffic hazard, and be the major reason that city blocks up.Therefore, how reducing the time of waiting at road traffic crossing place, improve efficiency and the speed of Vehicle Driving Cycle, is one of problem of being extremely concerned about of control of traffic and road department.
In prior art, the technical scheme that exists some transport information to issue, near the driver helping evades the too much section of vehicle, and average wagon flow, improves traffic.For example, by the jam situation in many sections around driver's current location is shown by roadside big screen display screen, make driver obtain in time the transport information in many sections going to destination, weigh choices, change in time drive route, in ensureing very fast arrival destination, the wagon flow in the section that blocks up is carried out to suitable shunting.But existing technical scheme just simply provides the congestion information in each section, do not provide traffic intersection to be detained the information of vehicle and near the information of lights state, provide information limited, reference value is general.
Therefore, need a kind of new transport information release model, the traffic intersection delay information of vehicle and near the information of lights state near driver's current location can be sent in driver's vehicle interior terminal in time, help driver to understand more meticulously near the transport information of each traffic intersection, thereby regulate route or travel speed, more effectively reach vehicle shunting effect.
Summary of the invention
In order to address the above problem, the invention provides a kind of traffic intersection information release terminal, introducing camera and image processing equipment takes and analyzes the delay vehicle of traffic intersection information release terminal place traffic intersection, determine the jam situation of current traffic intersection, reach and the information interaction of traffic control center by Wireless Data Transmission means, obtain near the crossing congestion exponential sum signal information of the multiple traffic intersections of driver's current location, and send different transport information according to the degree of blocking up of current traffic intersection to driver's vehicle interior wireless terminal, make the issue of traffic intersection information more accurate, more targeted.
According to an aspect of the present invention, a kind of traffic intersection information release terminal is provided, described terminal comprises video camera, image processing equipment, traffic controller, wireless communication interface and master controller, image processing equipment connects video camera the crossing image of shot by camera is carried out successively to image filtering processing and the index analysis processing of blocking up, output crossing congestion index, wireless communication interface is connected with image processing equipment and traffic controller respectively, the signal information that crossing congestion exponential sum traffic controller is exported sends to traffic control center, master controller is connected the radio receiving terminal that with timing, the crossing congestion exponential sum signal information of multiple traffic intersections in the first crossing presumptive area that wireless communication interface was received is sent to the vehicle in the second crossing presumptive area with wireless communication interface.
More specifically, in described traffic intersection information release terminal, further comprise, user's set device, be used for according to user's input, set the first predetermined index threshold of blocking up, the second predetermined block up index threshold, the first crossing presumptive area and the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are all the border circular areas centered by the traffic intersection of described terminal place, and the first predetermined index threshold of blocking up is less than the second predetermined index threshold of blocking up, memory device, be connected respectively with user's set device and wireless communication interface, the predetermined index threshold of blocking up of storage first, the second predetermined block up index threshold, the first crossing presumptive area and the second crossing presumptive area, store the crossing congestion exponential sum signal information of multiple traffic intersections in the first crossing presumptive area, also store the radio receiving terminal ID of the vehicle in the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are sent to traffic control center by described wireless communication interface, to receive the crossing congestion exponential sum signal information of multiple traffic intersections in the first crossing presumptive area of traffic control center feedback, and receive the radio receiving terminal ID of the vehicle in the second crossing presumptive area of traffic control center feedback, described image processing equipment also comprises, image filtering processing unit connects described video camera to receive crossing image, and crossing image filtering is processed with the interference noise in the image of filtering crossing, index analysis processing unit blocks up, connect described image filtering processing unit and described wireless communication interface, the vehicle fleet size being detained for the image traffic intersection place, crossing to after filtering interfering noise is analyzed, to obtain crossing congestion index, and crossing congestion index is sent to described wireless communication interface, crossing congestion index is higher, and the vehicle fleet size that corresponding traffic intersection place is detained is more, described master controller is connected respectively with described wireless communication interface and described memory device, set timing, when the crossing congestion index of described image processing equipment output is greater than first predetermined while blocking up index threshold, the output first information is issued signal, when the crossing congestion index of described image processing equipment output is greater than second predeterminedly while blocking up index threshold, output the second information is issued signal, display device, connects described master controller, shows in real time the crossing congestion index of multiple traffic intersections in the first crossing presumptive area, described wireless communication interface is in the time receiving described first information issue signal, according to described timing, the crossing congestion index timed sending of multiple traffic intersections in the first crossing presumptive area is arrived to the radio receiving terminal corresponding with the radio receiving terminal ID of the vehicle in the second crossing presumptive area, described wireless communication interface is in the time receiving described the second information issue signal, according to described timing, the crossing congestion exponential sum signal information timed sending of multiple traffic intersections in the first crossing presumptive area is arrived to the radio receiving terminal corresponding with the radio receiving terminal ID of the vehicle in the second crossing presumptive area, wherein, described user's set device, described memory device, described image processing equipment, described traffic controller and described master controller are all located in the instrument case of traffic intersection information release terminal, and described video camera, described wireless communication interface and described display device are all connected and are arranged on the cross bar central authorities of the fixed bar of traffic intersection with instrument case by wire cable, wherein, described signal information comprises current state, red light interval time, green light interval time and the yellow interval of the signal lamp at crossing, described current state comprises red light phase, amber light state and green light phase, and described user's set device arranges the first crossing presumptive area and the second crossing presumptive area by the radius of setting border circular areas corresponding to the radius of border circular areas corresponding to the first crossing presumptive area and the second crossing presumptive area respectively.
More specifically, in described traffic intersection information release terminal, the radius of border circular areas corresponding to described the first crossing presumptive area is 2 kilometers, and the radius of border circular areas corresponding to described the second crossing presumptive area is 5 kilometers.
More specifically, in described traffic intersection information release terminal, 32 single-chip microcomputers of KS32 series that described master controller is Samsung.
More specifically, in described traffic intersection information release terminal, described image filtering processing unit adopts nonlinear filter to carry out the filtering processing to crossing image.
More specifically, in described traffic intersection information release terminal, user's set device, described memory device, described image processing equipment, described traffic controller and described master controller are integrated on a surface-mounted integrated circuit.
More specifically, in described traffic intersection information release terminal, described master controller also comprises timer, for setting timing.
Embodiment
Below with reference to accompanying drawings the embodiment of traffic intersection information release terminal of the present invention is elaborated.
Communications and transportation is divided into the transport of production run and the transport of the process of circulation in social production.The activity in production of traffic is to realize the displacement of people and thing and communication, and shipping products is with passenger-kilometer and ton kilometre metering.For city dweller, what the most often run into is the people's of self driving trip formation displacement, for example, and on and off duty or trip festivals or holidays.Due to expanding economy, gathering way considerably beyond the urban road speed of development of city vehicle, urban transportation is more and more blocked up, need some intelligentized information to issue means, in time the relevant transport information of people's travel route is distributed to driver, for driver's reference, thereby the more unobstructed section of selecting to travel, crossing trip, save the time of expending on road,, contribute for alleviation city blocks up meanwhile.
Make discovery from observation, driver's steering vehicle is in urban road travels, and what pay close attention to the most is whether junction ahead is red light, and whether junction ahead occurs vehicle congestion situation, is especially having emergency, when need to rushing towards destination fast.But, near the transport information of several Important Sections driver's current location is only provided in prior art, and the providing of information of the prior art, be the large-screen display board by roadside, the coverage rate that information is issued is not high, and the transport information content providing is limited.Although cause driver selected in time the to travel section on smooth way, while arriving in crossing, be just in time red light or because the burst that accident causes is stopped up, still waste the most of the time at traffic intersection place.Like this, driver has to open the throttle and pass through fast at unimpeded section and crossing, and to fight the time reducing on road, this causes potential safety hazard equally.
Traffic intersection information release terminal of the present invention, can be according to the jam situation of terminal place traffic intersection, send different transport information near vehicle termination traffic intersection, the jam situation at each crossing and near the current state of traffic lights near transport information comprises, for driver changes travel route, minimizing running time provides important references.
Fig. 1 is the block diagram of the traffic intersection information release terminal that illustrates according to an embodiment of the present invention, described terminal comprises video camera 1, image processing equipment 2, traffic controller 3, wireless communication interface 5 and master controller 4, image processing equipment 2 connects video camera 1 crossing image captured video camera 1 is carried out successively to image filtering processing and the index analysis processing of blocking up, output crossing congestion index, wireless communication interface 5 is connected with image processing equipment 2 and traffic controller 3 respectively, the signal information that crossing congestion exponential sum traffic controller 3 is exported sends to traffic control center 6, master controller 4 is connected the radio receiving terminal that sends to the vehicle in the second crossing presumptive area with the crossing congestion exponential sum signal information of multiple traffic intersections in timing the first crossing presumptive area that wireless communication interface 5 is received with wireless communication interface 5.Described traffic intersection information release terminal can also comprise power-supply unit, for the equipment except power-supply unit in described traffic intersection information release terminal provides power supply.
Then, the structure of traffic intersection information release terminal of the present invention is carried out to more specific description.
Described terminal also comprises user's set device, be used for according to user's input, set the first predetermined index threshold of blocking up, the second predetermined block up index threshold, the first crossing presumptive area and the second crossing presumptive area, the first crossing presumptive area and the second crossing presumptive area are all the border circular areas centered by the traffic intersection of described terminal place, and the first predetermined index threshold of blocking up is less than the second predetermined index threshold of blocking up; Described terminal also comprises memory device, be connected respectively with user's set device and wireless communication interface 5, the predetermined index threshold of blocking up of storage first, the second predetermined block up index threshold, the first crossing presumptive area and the second crossing presumptive area, store the crossing congestion exponential sum signal information of multiple traffic intersections in the first crossing presumptive area, also store the radio receiving terminal ID of the vehicle in the second crossing presumptive area.
The first crossing presumptive area and the second crossing presumptive area are sent to traffic control center 6 by described wireless communication interface 5, to receive the crossing congestion exponential sum signal information of multiple traffic intersections in the first crossing presumptive area of feeding back of traffic control center 6, and receive the radio receiving terminal ID of the vehicle in the second crossing presumptive area that traffic control center 6 feeds back.
With reference to Fig. 2, described image processing equipment 2 also comprises, image filtering processing list 21 connects described video camera 1 with reception crossing image, and crossing image filtering is processed with the interference noise in the image of filtering crossing; Index analysis processing unit 22 blocks up, connect described image filtering processing unit 21 and described wireless communication interface 5, the vehicle fleet size being detained for the image traffic intersection place, crossing to after filtering interfering noise is analyzed, to obtain crossing congestion index, and crossing congestion index is sent to described wireless communication interface 5, crossing congestion index is higher, and the vehicle fleet size that corresponding traffic intersection place is detained is more.
Described master controller 4 is connected respectively with described wireless communication interface 5 and described memory device, set timing, it is first predetermined while blocking up index threshold that the crossing congestion index of exporting when described image processing equipment 2 is greater than, the output first information is issued signal, it is second predetermined while blocking up index threshold that the crossing congestion index of exporting when described image processing equipment 2 is greater than, and output the second information is issued signal.
Described terminal also comprises display device, connects described master controller 4, shows in real time the crossing congestion index of multiple traffic intersections in the first crossing presumptive area.
Described wireless communication interface 5 is in the time receiving described first information issue signal, according to described timing, the crossing congestion index timed sending of multiple traffic intersections in the first crossing presumptive area is arrived to the radio receiving terminal corresponding with the radio receiving terminal ID of the vehicle in the second crossing presumptive area, described wireless communication interface 5 is in the time receiving described the second information issue signal, according to described timing, the crossing congestion exponential sum signal information timed sending of multiple traffic intersections in the first crossing presumptive area is arrived to the radio receiving terminal corresponding with the radio receiving terminal ID of the vehicle in the second crossing presumptive area.
Wherein, described user's set device, described memory device, described image processing equipment 2, described traffic controller 3 and described master controller 4 are all located in the instrument case of traffic intersection information release terminal, and described video camera 1, described wireless communication interface 5 and described display device are all connected and are arranged on the cross bar central authorities of the fixed bar of traffic intersection with instrument case by wire cable.
Described signal information comprises current state, red light interval time, green light interval time and the yellow interval of the signal lamp at crossing, described current state comprises red light phase, amber light state and green light phase, and described user's set device can be respectively arranges the first crossing presumptive area and the second crossing presumptive area by the radius of setting border circular areas corresponding to the radius of border circular areas corresponding to the first crossing presumptive area and the second crossing presumptive area.
Wherein, in described traffic intersection information release terminal, the radius of border circular areas corresponding to described the first crossing presumptive area is chosen as 2 kilometers, and the radius of border circular areas corresponding to described the second crossing presumptive area is chosen as 5 kilometers; Described master controller 4 is chosen as 32 single-chip microcomputers of KS32 series of Samsung, described image filtering processing unit 21 can adopt nonlinear filter to carry out the filtering processing to crossing image, user's set device, described memory device, described image processing equipment 2, described traffic controller 3 and described master controller can be integrated on a surface-mounted integrated circuit, and described master controller 4 can also comprise timer, for setting timing.
In addition, image filtering, under the condition that as far as possible retains image detail feature, the noise to target image suppresses, and is indispensable operation in image pre-service, and the quality of its treatment effect by directly having influence on, process and the validity and reliability of analysis by successive image.Due to the imperfection of imaging system, transmission medium and recording unit etc., digital picture tends to be subject to the pollution of multiple noise in its formation, transmission log process.In addition, some link of image processing when input as object and not as anticipation time also can in result images, introduce noise.These noises often show as isolated pixel point or a pixel block that causes stronger visual effect on image.Usually, noise signal is uncorrelated with the object that will study, and he occurs with useless message form, upsets the observable information of image.For data image signal, psophometer is either large or small extreme value, these extreme values act on by plus-minus on the true gray-scale value of image pixel, cause bright, dim spot interference at image, greatly reduce picture quality, affected image restoration, cut apart, the carrying out of the follow-up work such as feature extraction, figure identification.The filtering machine of constructing a kind of effective inhibition noise must consider that two basic problems can remove the noise in target and background effectively; Meanwhile, can protect well shape, size and specific how much and the topological structure feature of image object.Main image filter comprises linear filter, nonlinear filter, median filter and morphologic filtering device etc.
In general, in the time of signal spectrum and noise spectrum aliasing or in the time containing nonadditivity noise in signal, as by the non-linear noise causing of system or there is non-Gaussian noise etc., traditional linear filter technology, as Fourier conversion, in filtering noise, always blurred picture details (as edge etc.) in some way, and then cause reducing as the positioning precision of linear feature and the extraction property of feature.And nonlinear filter is a kind of Nonlinear Mapping relation based on to input signal, often can a certain specific noise be mapped as approx zero and stick signal want feature, thereby it can overcome the weak point of linear filter to a certain extent.
In addition, timer is one of fundamental of the normal operation of communication protocol, is mainly used in the task that various timings and frame retransmit.Communication protocol realizes used timer in Single Chip Microcomputer (SCM) system, and timing accuracy is less demanding, but quantitative requirement is larger.Because hardware resource is limited, can not be that each independent task is distributed a hardware timer, can only simulate by single hardware timer the method for multiple software timers, meet the timing application needs in agreement.The appearance of timer, makes the work in the quite a lot of people's of needs control time become simply many.
Adopt traffic intersection information release terminal of the present invention, release news limited for existing traffic intersection information distribution scheme, the technical matters that specific aim is not high, adopt video camera and image processing equipment to obtain the congestion information at current crossing, adopt traffic controller to obtain the signal information at current crossing, and mutual by wireless communication interface and far-end traffic control center, obtain congestion information and the signal information of each traffic intersection of current traffic intersection near zone, near vehicle termination offering by wireless mode, so that driver's reference, the intelligent degree of whole information distribution scheme is higher, purpose is strong, effectively alleviate urban transportation, for driver has saved the valuable time.
Be understandable that, although the present invention discloses as above with preferred embodiment, but above-described embodiment is not in order to limit the present invention.For any those of ordinary skill in the art, do not departing from technical solution of the present invention scope situation, all can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not depart from technical solution of the present invention,, all still belongs in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to technical spirit of the present invention.