CN115394098A - Distributed dynamic monitoring traffic guidance screen control system - Google Patents
Distributed dynamic monitoring traffic guidance screen control system Download PDFInfo
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- CN115394098A CN115394098A CN202111287352.6A CN202111287352A CN115394098A CN 115394098 A CN115394098 A CN 115394098A CN 202111287352 A CN202111287352 A CN 202111287352A CN 115394098 A CN115394098 A CN 115394098A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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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
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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
- G08G1/0137—Measuring and analyzing of parameters relative to traffic conditions for specific applications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Traffic Control Systems (AREA)
Abstract
The invention relates to the technical field of road indicating facilities, in particular to a distributed dynamic monitoring traffic guidance screen control system. The distributed traffic guidance screen control module is established to control the display signals of the plurality of LED display screens, and the dynamic information and the static information are combined and issued. The LED display screen is controlled and displayed by using the independent control panel, the display and monitoring functions of the LED display screen are increased, meanwhile, only information used for displaying images in signals is intercepted in each display module, the refreshing rate and the information updating frequency of the LED display screen are improved, a dynamic road condition monitoring method based on multi-sensor fusion is established, corresponding moving vehicle target images are obtained through differential calculation, the accuracy and the real-time performance of a traffic guidance screen processing system on road monitoring are improved, meanwhile, the light intensity self-adaptive adjusting algorithm disclosed by the invention can be used for systematically sensing different illumination in one day, and the visual effect of a driver is prevented from being influenced by the brightness factor of the LED display screen.
Description
Technical Field
The invention relates to the technical field of road indicating facilities, and IPC classification numbers are as follows: G08G1/09, in particular to a distributed dynamic monitoring traffic guidance screen control system.
Background
At the present stage, with the development of urbanization, the urban traffic also tends to be complex gradually, and compared with a highway and a highway trunk line, the road networks of roads in the city are denser, the driving difficulty is higher, and the safety also needs to be noticed. The traffic guidance screen mainly issues road condition information through an LED display screen, wherein the road condition information usually comprises static text information, static road network information, dynamic text information, dynamic road network information and the like, so that a driver is reminded of the real-time road condition of the road section. But traditional LED display screen is single control mode usually, can only show a road conditions information, the practicality is relatively poor, the refresh rate of screen is low simultaneously, if the screen part takes place to damage, need change the monoblock LED display screen, and it is inconvenient, and the information identification to dynamic vehicle in some traffic induction screen exists the real-time of discernment relatively poor usually, sensitivity is not high, and there is the influence of noise, the information of dynamic vehicle can't the accurate recognition, thereby bring very big problem to the monitoring of real-time road conditions.
Patent CN200810112682 provides a road traffic real-time indication system, which establishes a display screen that can be used for traffic light display, and can edit warm prompts by itself to update road condition information in real time. However, the function of the LED display screen described in this patent can be realized by conventional technical means, because one of the basic functions of the LED is used when editing the characters on the LED display screen, and the characters display function and the traffic light display function are integrated into a whole, which easily causes confusion of the driver in visual resolution, and has certain potential safety hazard.
Patent CN201910719192 provides an LED display screen capable of displaying static image-text information and a display method thereof. The mask is added on the LED display screen, and the coating is coated on the mask, so that the LED display screen can display the indication content on the mask coating under the condition of no power on, and the indication content on the LED display screen is displayed under the condition of power on. But the method described in this patent has increased the structural complexity of LED display screen, and the main objective of addding the structure still is to increase instruction information, though can show road information in different electricity, practices thrift the electric energy simultaneously, but the road conditions information of show is also comparatively single, if the road conditions has changed, can't carry out quick and real-time change, finally still has increased the manual maintenance cost to the sign overall.
Therefore, a distributed dynamic monitoring traffic guidance screen control system is urgently needed to solve the problems of the road traffic indication screen and the guidance screen at the present stage. By establishing the dynamic target monitoring method based on distributed traffic guidance screen control and road condition real-time update, the road condition information monitoring function of the LED display screen is increased, and meanwhile, the overall refresh rate of the LED display screen and the identification accuracy of dynamic target vehicles are increased, so that the practicability of the traffic guidance screen and the road condition monitoring effect are better improved.
Disclosure of Invention
A distributed dynamic monitoring traffic guidance screen control system is provided, wherein a distributed traffic guidance screen control module is established, and the distributed traffic guidance screen control module performs combined control of dynamic information and static information by controlling display signals of a plurality of LED display screens in a distributed mode.
Preferably, the distributed traffic guidance screen control module divides the LED display screen into different display modules with various resolutions; each module controls display through a separate control panel and is matched with an independent RFID communication device; meanwhile, the modules are uniformly scheduled by taking the main control module as a remote control center.
Preferably, in the distributed traffic guidance screen control module, each display module only intercepts information for displaying images in the signals, caches the information for displaying the images through a double-rate synchronous dynamic random access memory, and generates high-refresh-rate display signals through FPGA drive.
Preferably, the distributed traffic guidance screen control module comprises a traffic buckle monitoring module, a road condition real-time updating module, a guidance information reminding module and a real-time commanding and scheduling module.
Preferably, the distributed traffic guidance screen control module collects road traffic information by establishing an intelligent control method based on multi-sensor fusion; the multi-sensor fusion comprises the fusion of a camera sensor, a sound control sensor, a photoelectric sensor and a speed measuring radar.
Preferably, the photoelectric sensor establishes a light intensity self-adaptive adjustment algorithm; the light intensity self-adaptive adjustment algorithm converts the intensity of the ambient light into the magnitude of voltage through the photoresistor by sensing the change of the ambient light; when the intensity of the ambient light is stronger, the control system outputs high voltage, and the brightness of the LED display screen is enhanced; when the intensity of the ambient light is lower in rainy and foggy days, the control system outputs low voltage, and the brightness of the LED display screen is weakened.
Preferably, the road condition real-time updating module monitors information of moving vehicles in a road section in real time by establishing a dynamic target monitoring method.
Preferably, the dynamic target monitoring method monitors image information of two continuous frames of dynamic vehicles through a camera, and obtains corresponding moving vehicle target images through differential calculation.
Preferably, the control system further comprises a background manual monitoring module; the background manual monitoring module updates and corrects the displayed characters of the traffic guidance screen in real time by acquiring multi-sensor fusion data.
Preferably, the traffic guidance screen control system realizes real-time communication and updating of remote information through GPRS/5G signals.
Compared with the prior art, the invention has the following beneficial effects:
(1) The invention establishes a distributed traffic guidance screen processing system, divides the LED display screen into multi-resolution display modules, respectively controls and displays the multi-resolution display modules by using the independent control boards, increases the display and monitoring functions of the LED display screen, improves the use stability and interchangeability of the traffic guidance screen, is convenient for the disassembly, assembly and maintenance of the display screen, simultaneously intercepts only the information used for displaying the image in the signal in each display module, caches the information used for displaying the image by using a double-rate synchronous dynamic random access memory, improves the refresh rate and the information updating frequency of the LED display screen by FPGA drive, and improves the real-time performance of the LED display screen on road condition monitoring.
(2) According to the invention, the dynamic road condition monitoring method based on multi-sensor fusion is established, the information of the moving vehicles in the road section is monitored in real time, the image information of two continuous frames of dynamic vehicles is monitored by using the camera sensor, and the corresponding moving vehicle target image is obtained by using differential calculation, so that the accuracy and the real-time performance of the traffic guidance screen processing system on road monitoring are improved.
(3) According to the invention, through establishing a light intensity self-adaptive adjusting algorithm, systematic perception is carried out on different illumination in one day, the brightness of the LED display screen is reasonably adjusted, and the influence of the brightness factor of the LED display screen on the visual effect of a driver is avoided.
Drawings
Fig. 1 is a block diagram of a distributed dynamic monitoring traffic guidance screen control system.
Detailed Description
A distributed dynamic monitoring traffic guidance screen control system is provided, wherein a distributed traffic guidance screen control module is established, and the distributed traffic guidance screen control module performs combined control of dynamic information and static information by controlling display signals of a plurality of LED display screens in a distributed mode.
In a preferred embodiment, the dynamic information is a scrolling display showing a slogan, and the static information is a fixed display showing a specific slogan.
In one embodiment, the distributed traffic guidance screen control module divides the LED display screen into different display modules with various resolutions; each module controls display through a separate control panel and is matched with an independent RFID communication device; meanwhile, the modules are uniformly scheduled by taking the main control module as a remote control center.
In one embodiment, in the distributed traffic guidance screen control module, each display module only intercepts information for displaying an image from a signal, caches the information for displaying the image in a double-rate synchronous dynamic random access memory, and generates a high-refresh-rate display signal by driving of an FPGA.
In one embodiment, the distributed traffic guidance screen control module comprises a traffic buckle monitoring module, a road condition real-time updating module, a guidance information reminding module and a real-time commanding and scheduling module.
In a preferred embodiment, the traffic buckle monitoring module is provided with a camera sensor and a speed measuring radar to monitor the driving conditions of passing vehicles and driving personnel in real time, if violation behaviors occur, related violation information is timely transmitted to the background manual monitoring module, and meanwhile the violation information is updated on the LED display screen; the road condition real-time updating module dynamically updates the road condition by establishing a road section dynamic road network map, and the dynamic updating has a real-time reminding function of road congestion and road construction; the guidance information reminding module is used for displaying a driving safety warning message and a road condition reminding slogan; the real-time commanding and scheduling module can temporarily regulate and dredge road vehicles by circularly playing commanding and scheduling information for traffic accidents in roads or traffic congestion caused by environmental factors so as to carry out emergency treatment.
In one embodiment, the distributed traffic guidance screen control module collects road traffic information by establishing an intelligent control method based on multi-sensor fusion; the multi-sensor fusion comprises the fusion of a camera sensor, a sound control sensor, a photoelectric sensor and a speed measuring radar.
In a preferred embodiment, the camera sensor is used for recording the driving information of passing vehicles, so as to judge the road condition information and carry out illegal recording; the voice control sensor is used for recording the noise value of the passing vehicle and avoiding the passing vehicle whistling in the no-whistling area and time of the urban road; the photoelectric sensor is used for acquiring the change of ambient light within one day and adjusting and increasing the brightness of the LED display screen in real time according to the intensity of the ambient light; the speed measuring radar is used for measuring the running speed of a passing vehicle and avoiding overspeed.
In one embodiment, the photoelectric sensor establishes a light intensity adaptive adjustment algorithm; the light intensity self-adaptive adjustment algorithm converts the intensity of the ambient light into the magnitude of voltage through the photoresistor by sensing the change of the ambient light; when the intensity of the ambient light is stronger, the control system outputs high voltage, and the brightness of the LED display screen is enhanced; when the intensity of the ambient light in rainy and foggy days is higher, the control system outputs low voltage, and the brightness of the LED display screen is weakened.
In one embodiment, the road condition real-time updating module monitors information of moving vehicles in a road section in real time by establishing a dynamic target monitoring method.
In one embodiment, the dynamic object monitoring method,
specifically, the method comprises the following main steps:
s1, acquiring images of two continuous frames of moving vehicles through a camera sensor;
s2, adjusting the collected images of the continuous two frames of moving vehicles based on image size, exposure, image distortion and noise filtering;
s3, converting the adjusted images of the continuous two frames of moving vehicles into a pixel matrix mode, and carrying out differential calculation on the converted images of the continuous two frames of moving vehicles;
s4, taking the feature points of the overlapped parts in the images of the continuous two frames of moving vehicles after difference calculation as the overlapped features, extracting the overlapped features and establishing a feature matching factor;
and S5, continuously shooting images of the moving vehicles in the road section through the camera sensor, circulating the steps, calculating the maximum characteristic matching factor of the moving vehicles in the road section, and extracting the images of two continuous frames of moving vehicles corresponding to the maximum characteristic matching factor to serve as the identified moving vehicle target images.
In one embodiment, the control system further comprises a background manual monitoring module; the background manual monitoring module updates and corrects the displayed characters of the traffic guidance screen in real time by acquiring multi-sensor fusion data.
In one embodiment, the traffic guidance screen control system realizes real-time communication and update of remote information through GPRS/5G signals.
In a preferred embodiment, the outer ring of the traffic guidance screen is attached with a reflective strip structure, and a double-layer full waterproof box body is adopted to avoid the corrosion of the shell of the traffic guidance screen caused by rain and fog weather; meanwhile, the traffic guidance screen can adopt two driving modes of solar power generation and alternating current power generation, and when the solar energy cannot provide enough electric energy, the alternating current driving assistance is adopted, so that the overall energy consumption of the traffic guidance screen is saved.
Claims (10)
1. A distributed dynamic monitoring traffic guidance screen control system is characterized in that a distributed traffic guidance screen control module is established; the distributed traffic guidance screen control module controls the display signals of the plurality of LED display screens in a distributed mode to carry out combined release of dynamic information and static information.
2. The distributed dynamic monitoring traffic guidance screen control system according to claim 1, wherein the distributed traffic guidance screen control module divides the LED display screen into different display modules with various resolutions; wherein, each module controls display through an independent control panel and is matched with an independent RFID communication device; meanwhile, the modules are uniformly scheduled by taking the main control module as a remote control center.
3. The distributed dynamic monitoring traffic guidance screen control system according to claim 2, wherein in the distributed traffic guidance screen control module, each display module only intercepts information for displaying images in the signals, and generates high-refresh-rate display signals through FPGA driving after the information for displaying the images is cached by a double-rate synchronous dynamic random access memory.
4. The distributed dynamic monitoring traffic guidance screen control system according to claim 2 or 3, wherein the distributed traffic guidance screen control module comprises a traffic buckle monitoring module, a road condition real-time updating module, a guidance information reminding module and a real-time commanding and scheduling module.
5. The distributed dynamic monitoring traffic guidance screen control system according to claim 4, wherein the distributed traffic guidance screen control module collects road traffic information by establishing an intelligent control method based on multi-sensor fusion; the multi-sensor fusion comprises the fusion of a camera sensor, a sound control sensor, a photoelectric sensor and a speed measuring radar.
6. The distributed dynamic monitoring traffic guidance screen control system according to claim 5, wherein the photoelectric sensor establishes a light intensity adaptive adjustment algorithm; the light intensity self-adaptive adjustment algorithm converts the intensity of the ambient light into the magnitude of voltage through the photoresistor by sensing the change of the ambient light; when the intensity of the ambient light is stronger, the control system outputs high voltage, and the brightness of the LED display screen is enhanced; when the intensity of the ambient light is lower in rainy and foggy days, the control system outputs low voltage, and the brightness of the LED display screen is weakened.
7. The distributed dynamic monitoring traffic guidance screen control system according to claim 4, wherein the real-time road condition updating module monitors information of moving vehicles in a road section in real time by establishing a dynamic target monitoring method.
8. The distributed dynamic monitoring traffic guidance screen control system according to claim 7, wherein the dynamic target monitoring method monitors image information of two continuous frames of dynamic vehicles through a camera sensor, and obtains corresponding moving vehicle target images through differential calculation.
9. The distributed dynamic monitoring traffic guidance screen control system according to claim 1, wherein the control system further comprises a background manual monitoring module; the background manual monitoring module updates and corrects the displayed characters of the traffic guidance screen in real time by acquiring multi-sensor fusion data.
10. The distributed dynamic monitoring traffic guidance screen control system according to claim 1, wherein the traffic guidance screen control system realizes real-time communication and update of remote information through GPRS/5G signals.
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