CN110930744A - Emergency traffic indicating lamp - Google Patents
Emergency traffic indicating lamp Download PDFInfo
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- CN110930744A CN110930744A CN201911079085.6A CN201911079085A CN110930744A CN 110930744 A CN110930744 A CN 110930744A CN 201911079085 A CN201911079085 A CN 201911079085A CN 110930744 A CN110930744 A CN 110930744A
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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
- G08G1/095—Traffic lights
- G08G1/0955—Traffic lights transportable
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
- G06V10/267—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion by performing operations on regions, e.g. growing, shrinking or watersheds
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
- G06V20/58—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads
- G06V20/584—Recognition of moving objects or obstacles, e.g. vehicles or pedestrians; Recognition of traffic objects, e.g. traffic signs, traffic lights or roads of vehicle lights or traffic lights
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
- G06V20/63—Scene text, e.g. street names
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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
- G08G1/017—Detecting movement of traffic to be counted or controlled identifying vehicles
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/60—Type of objects
- G06V20/62—Text, e.g. of license plates, overlay texts or captions on TV images
- G06V20/625—License plates
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V2201/00—Indexing scheme relating to image or video recognition or understanding
- G06V2201/08—Detecting or categorising vehicles
Abstract
The invention provides an emergency traffic light, comprising: base and pilot lamp house, the pilot lamp house below is provided with flexible inner tube, it has the flexible outer tube that can overturn to articulate on the base, flexible inner tube suit is in flexible inner tube, be used for placing when setting up the upset on the base flexible outer tube with the mounting groove of pilot lamp house. When the emergency traffic indicating lamp is stored and transported, the telescopic outer tube and the indicating lamp box can be turned over into the mounting groove of the base, and then the whole emergency traffic indicating lamp can be conveniently moved and transported through the pull rod and the rollers.
Description
Technical Field
The invention relates to a traffic facility, in particular to an emergency traffic indicator light.
Background
At the crossroad, traffic lights of three colors of red, yellow, green and green are hung on four sides, which is a traffic policeman without speaking. Traffic lights are internationally unified traffic lights. The red light is a stop signal and the green light is a pass signal. At the intersection, vehicles coming from a plurality of directions are converged at the intersection, some vehicles need to go straight, and some vehicles need to turn around, so that the people can walk first, and the traffic light is called to be instructed. The red light is on, the vehicle is prohibited from going straight or turning left, and the vehicle is permitted to turn right under the condition that pedestrians and vehicles are not hindered; the green light is on, and the vehicle is permitted to go straight or turn; the yellow light is on, and stops at the intersection stopping line or within the pedestrian crossing line, and the traffic is continued; when the yellow light flashes, the vehicle is warned to pay attention to safety.
The emergency traffic indicating lamp is a signal lamp for indicating traffic operation, and generally consists of a red lamp, a green lamp and a yellow lamp. The red light indicates no traffic, the green light indicates permission, and the yellow light indicates warning. Most of the existing movable emergency traffic indicator lamps are inconvenient to carry, and some emergency traffic indicator lamps do not have the function of storage and folding.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide an emergency traffic indicator light which can be stored in a base and can be hauled through a pull rod and a roller.
(II) technical scheme
In order to solve the above technical problem, the present invention provides an emergency traffic light, comprising: the base is provided with a mounting groove for placing the telescopic outer pipe and the indicating lamp box during overturning; the base is provided with rollers, and the side end of the base is provided with a telescopic pull rod; the telescopic inner pipe is fixed through a positioning bolt after being extended and opened relative to the telescopic outer pipe. The pilot lamp house accessible of emergency traffic pilot lamp is flexible inner tube and flexible outer tube and is carried out the regulation of high position, can be with flexible outer tube together with pilot lamp house upset to the mounting groove of base when accomodating the transport in, rethread pull rod and gyro wheel just can conveniently remove the transport with whole emergency traffic pilot lamp.
The emergency traffic indicator light is mainly used for intersections with large traffic flow and lacking of traffic lights, but the existing indicator light generally does not have a function of monitoring a driving position for playing a mobile phone, the harm of bad habits of driving such as driving to make a call, playing a mobile phone and the like is huge, the emergency response capability of a driver to sudden vehicle conditions is reduced by multiple times, and traffic accidents are caused, so the emergency traffic indicator light of the technical scheme further comprises the following steps:
the monitoring camera is arranged at the top of the indicating lamp box and used for shooting a passing vehicle to obtain a corresponding vehicle acquisition image and outputting the vehicle acquisition image;
the blocking processing equipment is connected with the monitoring camera and used for receiving the vehicle collected image, determining the fuzzy degree of the vehicle collected image and blocking the vehicle collected image based on the fuzzy degree of the vehicle collected image so as to obtain a plurality of image blocks with the same size, wherein the smaller the fuzzy degree of the vehicle collected image is, the more the number of the image blocks obtained by blocking the vehicle collected image is;
the threshold value analysis device is connected with the block processing device and used for receiving the image blocks and executing the following processing on each image block: acquiring a binarization threshold of the image blocks based on an OTSU algorithm, acquiring each binarization threshold of each image block in the neighborhood of the image blocks based on the OTSU algorithm, adjusting the binarization thresholds of the image blocks based on each binarization threshold of each image block in the neighborhood of the image blocks to obtain adjusted thresholds of the image blocks, and outputting the adjusted thresholds of the image blocks;
and the binarization processing device is connected with the threshold value analysis device and is used for receiving the plurality of image blocks and the adjusted threshold value corresponding to each image block, carrying out binarization processing on the image blocks based on the adjusted threshold value corresponding to each image block to obtain binarization blocks, and outputting each binarization block corresponding to each image block.
Further, the emergency traffic light further comprises:
the merging processing device is connected with the binarization processing device and used for receiving each binarization partition, merging each binarization partition, performing edge fusion on the merged image to obtain a fused image and outputting the fused image as a binarization image;
the preprocessing device is connected with the merging processing device and used for receiving the binary image, detecting the appearance of each target in the binary image, deepening each detected appearance of each target to obtain a corresponding deepened image and outputting the deepened image;
the energy measuring equipment is connected with the preprocessing equipment and used for receiving the deepened image, determining the energy distributed in different frequency bands in the deepened image and outputting a plurality of frequency bands with energy less than or equal to a limited amount as a plurality of frequency bands to be processed;
the band-pass filtering equipment is distributed and connected with the energy measuring equipment and the preprocessing equipment and is used for receiving the plurality of frequency bands to be processed and the deepened image, performing band-pass filtering processing on the deepened image based on the plurality of frequency bands to be processed so as to obtain a band-pass filtering image which comes from the deepened image and has the plurality of frequency bands to be processed, and further obtaining a band-pass reserved image which is used for removing the band-pass filtering image from the deepened image;
the automatic gain device is connected with the band-pass filtering device and used for executing gain processing on the band-pass filtering image based on the dynamic distribution range of the band-pass filtering image so as to obtain and output a gain processing image, wherein the wider the dynamic distribution range of the band-pass filtering image is, the smaller the gain processing force executed on the band-pass filtering image is;
the image integration equipment is respectively connected with the band-pass filtering equipment and the automatic gain equipment and is used for receiving the gain processing image and the band-pass retention image, integrating the gain processing image and the band-pass retention image to obtain and output an integrated image;
the mobile phone positioning device is connected with the image integration device and used for receiving the integrated image, identifying and segmenting a mobile phone subimage from the integrated image based on a preset mobile phone reference appearance, identifying and segmenting a direction plate image from the integrated image based on a preset direction plate reference appearance, and sending a call driving signal when the position of the mobile phone subimage is above the position of the direction plate image in the integrated image, or sending a normal driving signal when the position of the mobile phone subimage is not above the position of the direction plate image;
and the wireless communication interface is connected with the mobile phone positioning equipment and used for carrying out OCR (optical character recognition) on the license plate target which is closest to the direction plate image in the integrated image when the call driving signal is received so as to obtain a corresponding license plate number to be used as a target license plate number for wireless transmission.
Further, in the preprocessing device, performing deepening processing on each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to sixty percent of the value of the pixel point.
Further, in the preprocessing device, performing deepening processing on each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to forty percent of the value of the pixel point.
Further, in the preprocessing device, performing deepening processing on each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to eighty percent of the value of the pixel point.
Further, in the threshold analyzing device, adjusting the binarization threshold of the image partition based on each binarization threshold of each image partition in the neighborhood of the image partition to obtain an adjusted threshold of the image partition includes: the higher the matching degree of the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
(III) advantageous effects
The height position of the indicating lamp box of the emergency traffic indicating lamp can be adjusted through the telescopic inner pipe and the telescopic outer pipe, the telescopic outer pipe and the indicating lamp box can be turned into the mounting groove of the base during storage and transportation, and the whole emergency traffic indicating lamp can be conveniently moved and transported through the pull rod and the rollers.
Drawings
FIG. 1 is a schematic structural view of the present invention;
wherein: 1 is a base, 2 is an indicating lamp box, 3 is a telescopic inner pipe, 4 is a telescopic outer pipe, 5 is a mounting groove, 6 is a roller, 7 is a pull rod and 8 is a positioning bolt.
Detailed Description
Referring to fig. 1, the present invention provides an emergency traffic light, including: the lamp comprises a base 1 and an indicating lamp box 2, wherein a telescopic inner tube 3 is arranged below the indicating lamp box 2, a turnable telescopic outer tube 4 is hinged on the base 1, the telescopic inner tube 3 is sleeved in the telescopic inner tube 3, and a mounting groove 5 for placing the telescopic outer tube 4 and the indicating lamp box 2 during turning is arranged on the base 1; the base 1 is provided with a roller 6, and the side end of the base 1 is provided with a telescopic pull rod 7; the telescopic inner pipe 3 is fixed through a positioning bolt 8 after being extended and opened relative to the telescopic outer pipe 4. The pilot lamp house accessible of emergency traffic pilot lamp is flexible inner tube and flexible outer tube and is carried out the regulation of high position, can be with flexible outer tube together with pilot lamp house upset to the mounting groove of base when accomodating the transport in, rethread pull rod and gyro wheel just can conveniently remove the transport with whole emergency traffic pilot lamp.
The emergency traffic indicating lamp is mainly used for intersections with large traffic flow and lacking of traffic lights, but the existing indicating lamp generally does not have a function of monitoring a driving position for playing a mobile phone, the harm of bad habits of driving such as driving to make a call, playing a mobile phone and the like is huge, the emergency response capability of a driver to sudden vehicle conditions is reduced by multiple times, and traffic accidents are caused, so the emergency traffic indicating lamp of the embodiment further comprises:
the monitoring camera is arranged at the top of the indicating lamp box 2 and is used for shooting the passing vehicles to obtain corresponding vehicle acquisition images and outputting the vehicle acquisition images;
the blocking processing equipment is connected with the monitoring camera and used for receiving the vehicle collected image, determining the fuzzy degree of the vehicle collected image and blocking the vehicle collected image based on the fuzzy degree of the vehicle collected image so as to obtain a plurality of image blocks with the same size, wherein the smaller the fuzzy degree of the vehicle collected image is, the more the number of the image blocks obtained by blocking the vehicle collected image is;
the threshold value analysis device is connected with the block processing device and used for receiving a plurality of image blocks and executing the following processing to each image block: acquiring a binarization threshold of an image block based on an OTSU algorithm, acquiring each binarization threshold of each image block of an image block neighborhood based on the OTSU algorithm, adjusting the binarization threshold of the image block based on each binarization threshold of each image block of the image block neighborhood to acquire an adjusted threshold of the image block, and outputting the adjusted threshold of the image block;
and the binarization processing device is connected with the threshold value analysis device and is used for receiving the plurality of image blocks and the adjusted threshold value corresponding to each image block, carrying out binarization processing on the image blocks based on the adjusted threshold value corresponding to each image block to obtain binarization blocks, and outputting each binarization block corresponding to each image block.
The emergency traffic light further includes:
the merging processing device is connected with the binarization processing device and used for receiving each binarization block, merging each binarization block, performing edge fusion on the merged image to obtain a fused image and outputting the fused image as a binarization image;
the preprocessing device is connected with the merging processing device and used for receiving the binary images, detecting the appearance of each target in the binary images, deepening each detected appearance of each target to obtain corresponding deepened images and outputting the deepened images;
the energy measuring equipment is connected with the preprocessing equipment and used for receiving the deepened image, determining the energy distributed in different frequency bands in the deepened image and outputting a plurality of frequency bands with the energy less than or equal to a limited amount as a plurality of frequency bands to be processed;
the band-pass filtering device is connected with the energy measuring device and the preprocessing device in a distributed mode and is used for receiving a plurality of frequency bands to be processed and deepened images, performing band-pass filtering processing on the deepened images based on the plurality of frequency bands to be processed to obtain band-pass filtering images which come from the deepened images and have the plurality of frequency bands to be processed, and also used for obtaining band-pass retained images which are used for removing the band-pass filtering images from the deepened images;
the automatic gain device is connected with the band-pass filtering device and used for executing gain processing on the band-pass filtering image based on the dynamic distribution range of the band-pass filtering image so as to obtain and output a gain processing image, wherein the wider the dynamic distribution range of the band-pass filtering image is, the smaller the gain processing force executed on the band-pass filtering image is;
the image integration equipment is respectively connected with the band-pass filtering equipment and the automatic gain equipment and is used for receiving the gain processing image and the band-pass retained image, integrating the gain processing image and the band-pass retained image to obtain and output an integrated image;
the mobile phone positioning device is connected with the image integration device and used for receiving the integrated image, identifying and segmenting a mobile phone subimage from the integrated image based on a preset mobile phone reference appearance, identifying and segmenting a direction plate image from the integrated image based on a preset direction plate reference appearance, and sending a call driving signal when the position of the mobile phone subimage is above the position of the direction plate image in the integrated image, or sending a normal driving signal;
and the wireless communication interface is connected with the mobile phone positioning equipment and used for carrying out OCR (optical character recognition) on the license plate target closest to the plate image in the direction in the integrated image when receiving the call driving signal so as to obtain a corresponding license plate number to be used as a target license plate number for wireless transmission.
In the preprocessing device, deepening each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to sixty percent of the value of the pixel value.
In the preprocessing device, deepening each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to forty percent of the value of the pixel value.
In the preprocessing device, deepening each detected target outline to obtain a corresponding deepened image includes: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to eighty percent of the value of the pixel point.
In the threshold analysis device, adjusting the binarization threshold of the image block based on each binarization threshold of each image block in the neighborhood of the image block to obtain an adjusted threshold of the image block comprises: the higher the matching degree between the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
The emergency traffic indicating lamp of the embodiment aims at the technical problem that the conversation driving is difficult to judge in the prior art, and the detection precision of the conversation driving vehicle is improved by determining whether the nearest vehicle is in the conversation driving state according to the position of the mobile phone sub-image in the image relative to the direction plate image; determining a self-adaptive directional frequency band gain increasing strategy according to the image energy gathering condition, and ensuring the directionality and the effectiveness of image processing; the high-definition image is subjected to uniform blocking processing of corresponding size based on the fuzzy degree of the image, and for each image block, the threshold value of the image block is adjusted based on the threshold value of the image block in the neighborhood, so that the precision of image binaryzation is improved, and the technical problem is solved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. An emergency traffic light, comprising: the lamp comprises a base (1) and an indicating lamp box (2), wherein a telescopic inner tube (3) is arranged below the indicating lamp box (2), a turnover telescopic outer tube (4) is hinged to the base (1), the telescopic inner tube (3) is sleeved in the telescopic inner tube (3), and a mounting groove (5) for placing the telescopic outer tube (4) and the indicating lamp box (2) during turnover is arranged on the base (1); the base (1) is provided with rollers (6), and the side of the base (1) is provided with a telescopic pull rod (7).
2. The emergency traffic light according to claim 1, characterized in that the telescopic inner tube (3) is fixed by means of a positioning bolt (8) after being extended open with respect to the telescopic outer tube (4).
3. The emergency traffic light of claim 2, further comprising:
the monitoring camera is arranged at the top of the indicating lamp box (2) and is used for shooting a passing vehicle to obtain a corresponding vehicle acquisition image and outputting the vehicle acquisition image;
the blocking processing equipment is connected with the monitoring camera and used for receiving the vehicle collected image, determining the fuzzy degree of the vehicle collected image and blocking the vehicle collected image based on the fuzzy degree of the vehicle collected image so as to obtain a plurality of image blocks with the same size, wherein the smaller the fuzzy degree of the vehicle collected image is, the more the number of the image blocks obtained by blocking the vehicle collected image is;
the threshold value analysis device is connected with the block processing device and used for receiving the image blocks and executing the following processing on each image block: acquiring a binarization threshold of the image blocks based on an OTSU algorithm, acquiring each binarization threshold of each image block in the neighborhood of the image blocks based on the OTSU algorithm, adjusting the binarization thresholds of the image blocks based on each binarization threshold of each image block in the neighborhood of the image blocks to obtain adjusted thresholds of the image blocks, and outputting the adjusted thresholds of the image blocks;
and the binarization processing device is connected with the threshold value analysis device and is used for receiving the plurality of image blocks and the adjusted threshold value corresponding to each image block, carrying out binarization processing on the image blocks based on the adjusted threshold value corresponding to each image block to obtain binarization blocks, and outputting each binarization block corresponding to each image block.
4. The emergency traffic light of claim 3, further comprising:
the merging processing device is connected with the binarization processing device and used for receiving each binarization partition, merging each binarization partition, performing edge fusion on the merged image to obtain a fused image and outputting the fused image as a binarization image;
the preprocessing device is connected with the merging processing device and used for receiving the binary image, detecting the appearance of each target in the binary image, deepening each detected appearance of each target to obtain a corresponding deepened image and outputting the deepened image;
the energy measuring equipment is connected with the preprocessing equipment and used for receiving the deepened image, determining the energy distributed in different frequency bands in the deepened image and outputting a plurality of frequency bands with energy less than or equal to a limited amount as a plurality of frequency bands to be processed;
the band-pass filtering equipment is distributed and connected with the energy measuring equipment and the preprocessing equipment and is used for receiving the plurality of frequency bands to be processed and the deepened image, performing band-pass filtering processing on the deepened image based on the plurality of frequency bands to be processed so as to obtain a band-pass filtering image which comes from the deepened image and has the plurality of frequency bands to be processed, and further obtaining a band-pass reserved image which is used for removing the band-pass filtering image from the deepened image;
the automatic gain device is connected with the band-pass filtering device and used for executing gain processing on the band-pass filtering image based on the dynamic distribution range of the band-pass filtering image so as to obtain and output a gain processing image, wherein the wider the dynamic distribution range of the band-pass filtering image is, the smaller the gain processing force executed on the band-pass filtering image is;
the image integration equipment is respectively connected with the band-pass filtering equipment and the automatic gain equipment and is used for receiving the gain processing image and the band-pass retention image, integrating the gain processing image and the band-pass retention image to obtain and output an integrated image;
the mobile phone positioning device is connected with the image integration device and used for receiving the integrated image, identifying and segmenting a mobile phone subimage from the integrated image based on a preset mobile phone reference appearance, identifying and segmenting a direction plate image from the integrated image based on a preset direction plate reference appearance, and sending a call driving signal when the position of the mobile phone subimage is above the position of the direction plate image in the integrated image, or sending a normal driving signal when the position of the mobile phone subimage is not above the position of the direction plate image;
and the wireless communication interface is connected with the mobile phone positioning equipment and used for carrying out OCR (optical character recognition) on the license plate target which is closest to the direction plate image in the integrated image when the call driving signal is received so as to obtain a corresponding license plate number to be used as a target license plate number for wireless transmission.
5. An emergency traffic light according to claim 4, wherein in the preprocessing unit, the deepening of each detected target shape to obtain a corresponding deepened image comprises: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to sixty percent of the value of the pixel point.
6. An emergency traffic light according to claim 4, wherein in the preprocessing unit, the deepening of each detected target shape to obtain a corresponding deepened image comprises: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to forty percent of the value of the pixel point.
7. An emergency traffic light according to claim 4, wherein in the preprocessing unit, the deepening of each detected target shape to obtain a corresponding deepened image comprises: and obtaining each pixel point forming each target shape in the binary image, and reducing the pixel value of each obtained pixel point to eighty percent of the value of the pixel point.
8. The emergency traffic light of claim 4, wherein in the threshold resolving device, adjusting the binarization threshold of the image partition based on the respective binarization threshold of the respective image partition of the image partition neighborhood to obtain the adjusted threshold of the image partition comprises: the higher the matching degree of the image block neighborhood image block and the image block is, the greater the influence degree of the image block neighborhood image block on the binarization threshold value of the image block is.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079085.6A CN110930744A (en) | 2019-11-07 | 2019-11-07 | Emergency traffic indicating lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911079085.6A CN110930744A (en) | 2019-11-07 | 2019-11-07 | Emergency traffic indicating lamp |
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| CN110930744A true CN110930744A (en) | 2020-03-27 |
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| CN201911079085.6A Withdrawn CN110930744A (en) | 2019-11-07 | 2019-11-07 | Emergency traffic indicating lamp |
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| CN111862618A (en) * | 2020-06-13 | 2020-10-30 | 安徽国达城建设施科技有限公司 | Two-way road intelligent monitoring device |
| CN112489461A (en) * | 2020-12-04 | 2021-03-12 | 李鹏杰 | Traffic indicating equipment for traffic planning and traffic planning system |
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