CN105654725A - Distribution box based bus information acquisition method - Google Patents
Distribution box based bus information acquisition method Download PDFInfo
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- CN105654725A CN105654725A CN201610179847.XA CN201610179847A CN105654725A CN 105654725 A CN105654725 A CN 105654725A CN 201610179847 A CN201610179847 A CN 201610179847A CN 105654725 A CN105654725 A CN 105654725A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0108—Measuring and analyzing of parameters relative to traffic conditions based on the source of data
- G08G1/0116—Measuring and analyzing of parameters relative to traffic conditions based on the source of data from roadside infrastructure, e.g. beacons
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0125—Traffic data processing
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/0104—Measuring and analyzing of parameters relative to traffic conditions
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
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- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention relates to a distribution box based bus information acquisition method. The method includes the steps that 1, a bus information acquisition system based on a distribution box is provided, the system includes a distribution box housing, a light intensity detector, a high-definition camera, a distribution box communication interface and an AVR32 chip, the light intensity detector, the high-definition camera, the distribution box communication interface and the AVR32 chip are arranged on the distribution box housing, the light intensity detector, the high-definition camera and the AVR32 chip are used for determining the number of pedestrians at traffic intersections, and the distribution box communication interface is used for determining and sending the pedestrian flow indexes at the traffic intersections based on the number of pedestrians; 2, the acquisition system operates.
Description
Technical field
The present invention relates to switch box field, particularly relate to a kind of bus information collecting method based on switch box.
Background technology
Switch box can be classified as follows by constitutional features and purposes:
(1) the board-like switch box of fixed face, normal title switching motherboard or distribution screen. He is a kind of open-type switch box having panel to block, and there is protective effect in front, and alive part still can be touched in the back side and side, and degree of protection is low, can only be used for the industrial and mining enterprises that power supply continuity and reliability requirement is lower, be used as transformer room's central current supply.
(2) protected type (namely closed) switch box, refers to except mounting face, a kind of low-tension distribution box that other all side is all closed. The electrical elements such as the switch of this kind of chest, protection and Monitoring and Controlling, are installed in the closed shell that is made with steel or insulating material, reliable wall or install from wall. Quarantine measures can not be added between every bar loop, it is also possible to adopt the metal sheet of ground connection or insulcrete to isolate in case. Usual door and main switch operation have mechanical interlock. Also have protected type platform type switch box (i.e. supervisory control desk) in addition, panel is equipped with the electrical equipment such as control, measurement, signal. Protected type switch box is mainly used as the power distribution unit at technique scene.
(3) drawer-type distribution box. This kind of switch box adopts steel plate to make closed shell, and the electric elements entering transmission line circuit are all arranged in the drawer that can extract out, forms and can complete a certain class and power the functional unit of task. Between functional unit and bus or cable, the function plate made with the metal sheet of ground connection or plastics separates, and forms bus, functional unit and cable three regions. Also quarantine measures are had between each functional unit. Drawer-type distribution box has higher reliability, security and interchangeability, is more advanced switch box, and switch box majority refers to drawer-type distribution box. They are applicable to requirement and power the higher industrial and mining enterprises of reliability, Highrise buildings, as central controlled distribution center.
(4) power, lighting distribution box. It mostly is closed at right angle setting. Because use occasion is different, shell protection grade is also different. They are mainly as the power distribution unit of industrial and mining enterprises production scene.
Generally all arranging switch box at traffic intersection place, the traffic lights for traffic intersection control, or for the Street lamps control near traffic intersection, it is also possible to for providing electric power support for the capture apparatus violating the regulations near traffic intersection, urban service equipment. But the effect of traffic intersection switch box of the prior art is only limitted to this, traffic intersection switch box not yet occurs for providing the technical scheme of the passenger flow index of bus.
Therefore, need a kind of new bus guiding system, the switch box at each traffic intersection place can be made full use of, make it as the collection carrier of neighbouring signal equipment quantity, for the bus near traffic intersection provides intelligent passenger flow information service, so that neighbouring bus is dispatched a car, website adjusts the density of dispatching a car of oneself in real time, thus cost-effective simultaneously for city resident provides bus service more easily.
Summary of the invention
In order to solve the problem, the present invention provides a kind of bus information acquisition system based on switch box, switch box near already present traffic intersection is transformed, the image recognition apparatus of integrated high precision and radio communication equipment think that the bus dispatching platform of far-end provides the passenger flow service near traffic intersection, introduce the density of dispatching a car that bus dispatching platform is used for determining bus circuit near traffic intersection address based on passenger flow index simultaneously, and by wireless communication link, the density of dispatching a car determined is sent to the bus fleet management platform of bus circuit ownership near traffic intersection address.
According to an aspect of the present invention, provide a kind of bus information collecting method based on switch box, the method comprises: 1) provide a kind of bus information acquisition system based on switch box, described system comprises switch box shell, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip are all arranged on switch box shell, intensity of illumination detector, high-definition camera and AVR32 chip are for determining pedestrian's quantity at traffic intersection place, switch box communication interface is used for determining the passenger flow index at send traffic intersection place based on pedestrian's quantity, 2) described acquisition system is run.
More specifically, in the described bus information acquisition system based on switch box, comprise: distribution box main body, comprise connecting terminal block, handle is selected in remote manual control, jump and close position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply, switch box communication interface, switch box shell and AVR32 chip, AVR32 chip and connecting terminal block, handle is selected in remote manual control, jump and close position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply and switch box communication interface connect respectively, remote manual control selects handle for realizing manual operation on the spot and the switching of telemanipulation on the spot, analog input interface comprises signal conditioning circuit, synchrolock circuitry phase and analog to digital conversion circuit, standby power supply is ultracapacitor, and its working temperature is on 40 degrees below zero to zero between 70 degree, and efficiency for charge-discharge is between 90% to 95%, switch box shell adopts corrosion-resistant stainless material, intensity of illumination detector, is arranged on switch box shell, for detecting the real-time lighting intensity of traffic intersection position, determines according to real-time lighting intensity and exports corresponding intensity of illumination grade, high-definition camera, is arranged on switch box shell, and for being taken by traffic intersection, to obtain high definition crossing image, the resolving power of high definition crossing image is 1920 �� 1080, FLASH memory, it is arranged in switch box shell, it is connected with connecting terminal block, for prestoring multiple benchmark intensity of illumination crossings image, the corresponding intensity of illumination grade of each benchmark intensity of illumination crossing image, each benchmark intensity of illumination crossing image is that traffic intersection is carried out taking the image obtained in advance by high-definition camera under without any pedestrian's state under corresponding intensity of illumination grade, FLASH memory is also for prestoring binary-state threshold, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark is to corner characteristics, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark diagonal angle is characterized as to extract after benchmark pedestrian's image carries out the little wave conversion of Haar and obtains, Foreground selection equipment, being connected respectively with connecting terminal block, intensity of illumination detector and FLASH memory, the intensity of illumination grade based on the output of current time intensity of illumination detector is found corresponding benchmark intensity of illumination crossing image in FLASH memory and is exported as target Background picture, live image splitting equipment, with connecting terminal block, high-definition camera, FLASH memory and Foreground selection equipment connect respectively, high definition crossing image and the high definition crossing image of current time upper one second of current time is received by high-definition camera, respectively as the first high definition crossing image and the 2nd high definition crossing image, the gray-scale value of each pixel of the first high definition crossing image is subtracted the gray-scale value of the pixel of correspondence position in the 2nd high definition crossing image and takes absolute value to obtain image difference absolute value, when image difference absolute value is more than or equal to binary-state threshold, the respective pixel of the first high definition crossing image is confirmed as active pixel, otherwise, the respective pixel of the first high definition crossing image is confirmed as static pixel, the image that all active pixel in first high definition crossing image form is exported as live image, live image is made up of one or more movable region, morphological image treatment facility, it is connected with connecting terminal block, live image splitting equipment, for receiving live image, and each movable region is carried out denoising to obtain denoising subgraph, fill up denoising subgraph interior void and connect the breakpoint in denoising subgraph to obtain shaping subgraph, export one or more shaping subgraph, Wavelet transformation device, is connected with connecting terminal block, morphological image treatment facility, and each shaping subgraph is performed the little wave conversion of Haar, to extract the edge feature of each shaping subgraph, linear feature, central feature and to corner characteristics,AVR32 chip is connected respectively with connecting terminal block, Wavelet transformation device and FLASH memory, by the edge feature of each shaping subgraph, linear feature, central feature with corner characteristics is compared by corner characteristics respectively with reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark, when four comparative results are all coupling, corresponding shaping subgraph is confirmed as pedestrian's subgraph, calculates the number of pedestrian's subgraph and exports as pedestrian's quantity; Switch box communication interface is connected with AVR32 chip, receives pedestrian's exponential sum traffic intersection address, for determining passenger flow index based on pedestrian's quantity, and sends passenger flow exponential sum traffic intersection address by wireless communication link; Bus dispatching platform, it is arranged on far-end, comprise bus dispatcher communication interface and bus scheduling controller, bus dispatcher communication interface is used for receiving passenger flow exponential sum traffic intersection address by wireless communication link, bus scheduling controller is connected with bus dispatcher communication interface, for determining the density of dispatching a car of bus circuit near traffic intersection address based on passenger flow index, and based on traffic intersection address, the density of dispatching a car determined is sent to by bus dispatcher communication interface the bus fleet management platform of bus circuit ownership near traffic intersection address; Wherein, pedestrian's quantity is more many, and the passenger flow index of traffic intersection address is more big, and the density of dispatching a car of bus circuit is more frequent.
More specifically, in the described bus information acquisition system based on switch box: traffic intersection address is pre-stored in FLASH memory.
More specifically, in the described bus information acquisition system based on switch box: switch box communication interface is connected to obtain traffic intersection address with FLASH memory.
More specifically, in the described bus information acquisition system based on switch box: wireless communication link is FDD bidirectional communication link.
More specifically, in the described bus information acquisition system based on switch box: bus dispatching platform is arranged on bus management control center position, city.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of the bus information acquisition system based on switch box illustrated according to an embodiment of the present invention.
Reference numeral: 1 switch box shell; 2 intensity of illumination detectors; 3 high-definition cameras; 4 switch box communication interfaces; 5AVR32 chip
Embodiment
Below with reference to accompanying drawings the embodiment based on the bus information acquisition system of switch box of the present invention is described in detail.
Switch box of the prior art application is too single, the development trend of intelligent city cannot be adapted to, in fact, the extended functionality of traffic intersection place switch box has greatly can the phase, such as can as the data acquisition platform of traffic intersection, for gathering pedestrian's quantity around, determine the passenger flow index of traffic intersection based on pedestrian's quantity, thus provide convenience for the selection of the departure frequency of surrounding bus fleet.
In prior art when lacking bus passenger flow index and navigate, following situation is probably caused to occur: near (1), flow of the people is considerably less, but the bus fleet management platform of bus circuit ownership does not understand this information near traffic intersection address, continue departure frequency frequently, cause too much bus unloaded, waste a large amount of public transport resources; (2) near, flow of the people is very many, but near traffic intersection address, the bus fleet management platform of bus circuit ownership does not understand particular case, it does not have increases the departure frequency of bus, causes pedestrian to go on a journey difficulty.
In order to overcome above-mentioned deficiency, the present invention has built a kind of bus information acquisition system based on switch box, stream of people's quantity of surrounding can be identified in time, so that it is determined that the passenger flow index of respective stretch, and in time passenger flow index is mail to neighbouring bus dispatching platform, to control the bus fleet management platform self-adaptative adjustment bus departure frequency of bus circuit ownership near traffic intersection address.
Fig. 1 is the block diagram of the bus information acquisition system based on switch box illustrated according to an embodiment of the present invention, described system comprises switch box shell, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip are all arranged on switch box shell, intensity of illumination detector, high-definition camera and AVR32 chip are for determining pedestrian's quantity at traffic intersection place, switch box communication interface is used for determining the passenger flow index at send traffic intersection place based on pedestrian's quantity.
Then, continue the concrete structure based on the bus information acquisition system of switch box to the present invention to be further detailed.
Described system comprises: distribution box main body, comprises connecting terminal block, remote manual control selection handle, jumps and close position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply, switch box communication interface, switch box shell and AVR32 chip.
AVR32 chip selects handle, jumping conjunction position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply and switch box communication interface to be connected respectively with connecting terminal block, remote manual control; Remote manual control selects handle for realizing manual operation on the spot and the switching of telemanipulation on the spot; Analog input interface comprises signal conditioning circuit, synchrolock circuitry phase and analog to digital conversion circuit.
Standby power supply is ultracapacitor, and its working temperature is on 40 degrees below zero to zero between 70 degree, and efficiency for charge-discharge is between 90% to 95%; Switch box shell adopts corrosion-resistant stainless material.
Described system comprises: intensity of illumination detector, is arranged on switch box shell, for detecting the real-time lighting intensity of traffic intersection position, determines according to real-time lighting intensity and exports corresponding intensity of illumination grade.
Described system comprises: high-definition camera, is arranged on switch box shell, and for being taken by traffic intersection, to obtain high definition crossing image, the resolving power of high definition crossing image is 1920 �� 1080.
Described system comprises: FLASH memory, it is arranged in switch box shell, it is connected with connecting terminal block, for prestoring multiple benchmark intensity of illumination crossings image, the corresponding intensity of illumination grade of each benchmark intensity of illumination crossing image, each benchmark intensity of illumination crossing image is that traffic intersection is carried out taking the image obtained in advance by high-definition camera under without any pedestrian's state under corresponding intensity of illumination grade, FLASH memory is also for prestoring binary-state threshold, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark is to corner characteristics, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark diagonal angle is characterized as to extract after benchmark pedestrian's image carries out the little wave conversion of Haar and obtains.
Described system comprises: Foreground selection equipment, being connected respectively with connecting terminal block, intensity of illumination detector and FLASH memory, the intensity of illumination grade based on the output of current time intensity of illumination detector is found corresponding benchmark intensity of illumination crossing image in FLASH memory and is exported as target Background picture.
Described system comprises: live image splitting equipment, with connecting terminal block, high-definition camera, FLASH memory and Foreground selection equipment connect respectively, high definition crossing image and the high definition crossing image of current time upper one second of current time is received by high-definition camera, respectively as the first high definition crossing image and the 2nd high definition crossing image, the gray-scale value of each pixel of the first high definition crossing image is subtracted the gray-scale value of the pixel of correspondence position in the 2nd high definition crossing image and takes absolute value to obtain image difference absolute value, when image difference absolute value is more than or equal to binary-state threshold, the respective pixel of the first high definition crossing image is confirmed as active pixel, otherwise, the respective pixel of the first high definition crossing image is confirmed as static pixel, the image that all active pixel in first high definition crossing image form is exported as live image, live image is made up of one or more movable region.
Described system comprises: morphological image treatment facility, it is connected with connecting terminal block, live image splitting equipment, for receiving live image, and each movable region is carried out denoising to obtain denoising subgraph, fill up denoising subgraph interior void and connect the breakpoint in denoising subgraph to obtain shaping subgraph, export one or more shaping subgraph.
Described system comprises: Wavelet transformation device, it is connected with connecting terminal block, morphological image treatment facility, each shaping subgraph is performed the little wave conversion of Haar, to extract the edge feature of each shaping subgraph, linear feature, central feature and to corner characteristics.
AVR32 chip is connected respectively with connecting terminal block, Wavelet transformation device and FLASH memory, by the edge feature of each shaping subgraph, linear feature, central feature with corner characteristics is compared by corner characteristics respectively with reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark, when four comparative results are all coupling, corresponding shaping subgraph is confirmed as pedestrian's subgraph, calculates the number of pedestrian's subgraph and exports as pedestrian's quantity.
Switch box communication interface is connected with AVR32 chip, receives pedestrian's exponential sum traffic intersection address, for determining passenger flow index based on pedestrian's quantity, and sends passenger flow exponential sum traffic intersection address by wireless communication link.
Described system comprises: bus dispatching platform, it is arranged on far-end, comprise bus dispatcher communication interface and bus scheduling controller, bus dispatcher communication interface is used for receiving passenger flow exponential sum traffic intersection address by wireless communication link, bus scheduling controller is connected with bus dispatcher communication interface, for determining the density of dispatching a car of bus circuit near traffic intersection address based on passenger flow index, and based on traffic intersection address, the density of dispatching a car determined is sent to by bus dispatcher communication interface the bus fleet management platform of bus circuit ownership near traffic intersection address.
Wherein, pedestrian's quantity is more many, and the passenger flow index of traffic intersection address is more big, and the density of dispatching a car of bus circuit is more frequent.
Can selection of land, in the system: traffic intersection address is pre-stored in FLASH memory; Switch box communication interface is connected with FLASH memory to obtain traffic intersection address; Wireless communication link is FDD bidirectional communication link; And bus dispatching platform can be arranged on bus management control center position, city.
In addition, little ripple (Wavelet) this term, as the term suggests, " little ripple " is exactly little waveform. So-called " little " refers to that he has decay; It is referred to as the fluctuation that " ripple " then refers to it, the concussion form of its amplitude alternate positive and negative. Compared with Fourier conversion, little wave conversion is the localization analysis of time (space) frequency, signal (function) is progressively carried out multi-scale refinement by flexible shift operations by him, finally reach high frequency treatment time subdivision, the frequency segmentation of low frequency place, can automatically adapt to the requirement that time frequency signal is analyzed, thus can focus on any details of signal, solve the difficult problem of Fourier conversion, become the important breakthrough in scientific approach since the Fourier that continues converts. Someone calls little wave conversion " mathematics microscope ".
The application of little wavelength-division analysis is together with the theoretical investigation analysed with little wavelength-division is closely combined in. He achieves the achievement attracted people's attention at scientific and technical information industrial field. Electronic information technology is a field important in six big new and high technologies, and his important aspect is image and signal processing. Now, signal processing has become the integral part that contemporary science and technology works, and the object of signal processing is exactly: analysis accurately, diagnosis, encoding compression and quantification, fast transmission or storage, accurately reconstruct (or recovery). Can unify from mathematically angle, signal and image procossing to regard signal processing (image can be regarded as 2D signal) as, in many application of little ripple analytically many analyses, signal processing problems can be summed up as. Being stablize constant signal in time for its character, the ideal tools of process is still fourier analysis. But most signals in actual applications are astable, and the instrument being specially adapted to astable signal is exactly little wavelength-division analysis.
Adopt the bus information acquisition system based on switch box of the present invention, the technical problem of control it is difficult to for prior art bus departure frequency, first, transform existing traffic intersection switch box, increase image recognition apparatus and signal equipment are to realize neighbouring pedestrian's number quantitative statistics and transmission, increase bus dispatching platform to determine passenger flow index based on the pedestrian's quantity received, and passenger flow index is wirelessly sent to neighbouring bus fleet, to realize the adaptive control of the departure frequency based on real-time pedestrian's quantity.
Although it should be appreciated that the present invention with better embodiment disclose as above, but above-described embodiment and be not used 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 that technical solution of the present invention is made many possible variations and modification, or be revised as the equivalent embodiment of equivalent variations. Therefore, every content not departing from technical solution of the present invention, the technical spirit of foundation the present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still belongs in the scope of technical solution of the present invention protection.
Claims (6)
1., based on a bus information collecting method for switch box, the method comprises:
1) a kind of bus information acquisition system based on switch box is provided, described system comprises switch box shell, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip, intensity of illumination detector, high-definition camera, switch box communication interface and AVR32 chip are all arranged on switch box shell, intensity of illumination detector, high-definition camera and AVR32 chip are for determining pedestrian's quantity at traffic intersection place, and switch box communication interface is used for determining the passenger flow index at send traffic intersection place based on pedestrian's quantity;
2) described acquisition system is run.
2. the method for claim 1, it is characterised in that, described system comprises:
Distribution box main body, comprise connecting terminal block, handle is selected in remote manual control, jump conjunction position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply, switch box communication interface, switch box shell and AVR32 chip, and AVR32 chip closes position indicator, divide-shut brake button, analog input interface, switch value input interface, mains-supplied interface, standby power supply and switch box communication interface be connected respectively with connecting terminal block, remote manual control selection handle, jumping;
Remote manual control selects handle for realizing manual operation on the spot and the switching of telemanipulation on the spot;
Analog input interface comprises signal conditioning circuit, synchrolock circuitry phase and analog to digital conversion circuit;
Standby power supply is ultracapacitor, and its working temperature is on 40 degrees below zero to zero between 70 degree, and efficiency for charge-discharge is between 90% to 95%;
Switch box shell adopts corrosion-resistant stainless material;
Intensity of illumination detector, is arranged on switch box shell, for detecting the real-time lighting intensity of traffic intersection position, determines according to real-time lighting intensity and exports corresponding intensity of illumination grade;
High-definition camera, is arranged on switch box shell, and for being taken by traffic intersection, to obtain high definition crossing image, the resolving power of high definition crossing image is 1920 �� 1080;
FLASH memory, it is arranged in switch box shell, it is connected with connecting terminal block, for prestoring multiple benchmark intensity of illumination crossings image, the corresponding intensity of illumination grade of each benchmark intensity of illumination crossing image, each benchmark intensity of illumination crossing image is that traffic intersection is carried out taking the image obtained in advance by high-definition camera under without any pedestrian's state under corresponding intensity of illumination grade, FLASH memory is also for prestoring binary-state threshold, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark is to corner characteristics, reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark diagonal angle is characterized as to extract after benchmark pedestrian's image carries out the little wave conversion of Haar and obtains,
Foreground selection equipment, being connected respectively with connecting terminal block, intensity of illumination detector and FLASH memory, the intensity of illumination grade based on the output of current time intensity of illumination detector is found corresponding benchmark intensity of illumination crossing image in FLASH memory and is exported as target Background picture;
Live image splitting equipment, with connecting terminal block, high-definition camera, FLASH memory and Foreground selection equipment connect respectively, high definition crossing image and the high definition crossing image of current time upper one second of current time is received by high-definition camera, respectively as the first high definition crossing image and the 2nd high definition crossing image, the gray-scale value of each pixel of the first high definition crossing image is subtracted the gray-scale value of the pixel of correspondence position in the 2nd high definition crossing image and takes absolute value to obtain image difference absolute value, when image difference absolute value is more than or equal to binary-state threshold, the respective pixel of the first high definition crossing image is confirmed as active pixel, otherwise, the respective pixel of the first high definition crossing image is confirmed as static pixel, the image that all active pixel in first high definition crossing image form is exported as live image, live image is made up of one or more movable region,
Morphological image treatment facility, it is connected with connecting terminal block, live image splitting equipment, for receiving live image, and each movable region is carried out denoising to obtain denoising subgraph, fill up denoising subgraph interior void and connect the breakpoint in denoising subgraph to obtain shaping subgraph, export one or more shaping subgraph;
Wavelet transformation device, is connected with connecting terminal block, morphological image treatment facility, and each shaping subgraph is performed the little wave conversion of Haar, to extract the edge feature of each shaping subgraph, linear feature, central feature and to corner characteristics;
AVR32 chip is connected respectively with connecting terminal block, Wavelet transformation device and FLASH memory, by the edge feature of each shaping subgraph, linear feature, central feature with corner characteristics is compared by corner characteristics respectively with reference edge feature, benchmark linear feature, reference center's characteristic sum benchmark, when four comparative results are all coupling, corresponding shaping subgraph is confirmed as pedestrian's subgraph, calculates the number of pedestrian's subgraph and exports as pedestrian's quantity;
Switch box communication interface is connected with AVR32 chip, receives pedestrian's exponential sum traffic intersection address, for determining passenger flow index based on pedestrian's quantity, and sends passenger flow exponential sum traffic intersection address by wireless communication link;
Bus dispatching platform, it is arranged on far-end, comprise bus dispatcher communication interface and bus scheduling controller, bus dispatcher communication interface is used for receiving passenger flow exponential sum traffic intersection address by wireless communication link, bus scheduling controller is connected with bus dispatcher communication interface, for determining the density of dispatching a car of bus circuit near traffic intersection address based on passenger flow index, and based on traffic intersection address, the density of dispatching a car determined is sent to by bus dispatcher communication interface the bus fleet management platform of bus circuit ownership near traffic intersection address;
Wherein, pedestrian's quantity is more many, and the passenger flow index of traffic intersection address is more big, and the density of dispatching a car of bus circuit is more frequent.
3. method as claimed in claim 2, it is characterised in that:
Traffic intersection address is pre-stored in FLASH memory.
4. method as claimed in claim 3, it is characterised in that:
Switch box communication interface is connected with FLASH memory to obtain traffic intersection address.
5. method as claimed in claim 2, it is characterised in that:
Wireless communication link is FDD bidirectional communication link.
6. method as claimed in claim 2, it is characterised in that:
Bus dispatching platform is arranged on bus management control center position, city.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610179847.XA CN105654725A (en) | 2016-03-27 | 2016-03-27 | Distribution box based bus information acquisition method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610179847.XA CN105654725A (en) | 2016-03-27 | 2016-03-27 | Distribution box based bus information acquisition method |
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| CN105654725A true CN105654725A (en) | 2016-06-08 |
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