CN108944857A - A kind of nearly zebra stripes forced deceleration of vehicle or parking device - Google Patents

A kind of nearly zebra stripes forced deceleration of vehicle or parking device Download PDF

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Publication number
CN108944857A
CN108944857A CN201810678251.3A CN201810678251A CN108944857A CN 108944857 A CN108944857 A CN 108944857A CN 201810678251 A CN201810678251 A CN 201810678251A CN 108944857 A CN108944857 A CN 108944857A
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China
Prior art keywords
vehicle
speed
zebra stripes
chip microcontroller
information
Prior art date
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CN201810678251.3A
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Chinese (zh)
Inventor
胡立伟
陈政
张婷
何越人
罗振武
孟玲
杨锦青
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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Priority to CN201810678251.3A priority Critical patent/CN108944857A/en
Publication of CN108944857A publication Critical patent/CN108944857A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00Brake-action initiating means
    • B60T7/12Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Traffic Control Systems (AREA)

Abstract

The invention belongs to traffic safety technical fields, disclose a kind of nearly zebra stripes forced deceleration of vehicle or parking device, it is provided with for judging and handling the information transmitted by image collecting device, vehicle speed sensor, odometer, radar, the single-chip microcontroller whether decision vehicle slows down or stop, for acquiring the zebra line image in road to, and acquired image information is sent to the image collecting device of single-chip microcontroller;For acquiring the driving speed information of vehicle and the range information of zebra stripes, and it is sent to the vehicle speed sensor and radar of single-chip microcontroller;For when vehicle travels, for generating pulse signal, and communicating information to single-chip microcontroller, extrapolate vehicle driving to zebra stripes distance odometer.Detecting vehicle front whether there is zebra stripes, and detect vehicle at a distance from zebra stripes;Vehicle Speed is detected, and compares travel speed and safe speed, regulation speed;It calculates vehicle driving distance, vehicle is made to stop before driving into zebra stripes.

Description

A kind of nearly zebra stripes forced deceleration of vehicle or parking device
Technical field
The invention belongs to traffic safety technical field more particularly to a kind of nearly zebra stripes forced deceleration of vehicle or parkings Device.
Technological overview
According to the data statistics over nearly 3 years, the traffic accident about 1.4 ten thousand of motor vehicle and pedestrian occurs on zebra stripes for the whole nation It rises, causes 3898 people dead;Wherein, accident caused by motor vehicle does not give way by regulation accounts for the 90% of total amount.According to " middle Chinese The people republic law on road traffic safety " regulation, it, should Reduced Speed Now when motor line is through crossing;Passer is passing through Crossing, should Stop and give way.Motor line through not traffic signals road when, meet pedestrian cross road, should avoid. Therefore, motor vehicle is by giving precedence to pedestrian, not only moral claim, even more legal obligation before zebra stripes.
Currently, the aspect from policy to facility is that road traffic safety has carried out a large amount of construction, but is directed to for country It is also lacking in the pass through management aspect of zebra stripes of vehicle, vehicle and pedestrian is gone across the road simultaneously, if vehicle does not give way Biggish security risk can be generated.
Prior art invention, which has, tries hard to reduction essence for carrying out IPM transformation after the pretreatment of high definition picture by median filtering True information of road surface.In sharp contrast region is defined from the gray feature of image using bipolarity method, fundamentally very Difficulty eliminates influence caused by projective transformation and requires acquisition photo resolution requirement very high.Zebra stripes region pavement detection dress It sets, safe passing suggestion device, central processing unit, power supply, zebra stripes region road surface checking device is set to crossing spot In horse line region or outside region, zebra stripes region road surface checking device, safe passing suggestion device respectively with central processing Device is electrically connected, and the power supply is used to supply to zebra stripes region road surface checking device, safe passing suggestion device, central processing unit Electricity.Based on the mainly semi-automatic detection of existing pavement detection technology, and the characteristics of semi-automatic detection method is computation Machine controls the movement of detection device mechanical part, by measurement data real-time storage to hard disc of computer, and at certain intervals Data are analyzed and are calculated.This process is complicated and data processing is relatively difficult, detects speed and efficiency is not still high.It is right The application processing requirement of central processing unit is too high and cost is very big.
In conclusion problem of the existing technology:
Prior art analytic process is complicated and data processing is relatively difficult, speed and inefficiency is detected, to central processing The application processing requirement of device is too high and cost is very big.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of nearly zebra stripes forced deceleration of vehicle or parking dresses It sets, can effectively ensure that road is more unimpeded orderly, make to occur the accident sharp fall on zebra stripes, ensure pedestrian's The security of the lives and property.
The invention is realized in this way a kind of nearly zebra stripes forced deceleration of vehicle or parking method, the nearly zebra of the vehicle Line forced deceleration or parking method include:
(1) while the car is driving, image collecting device constantly detects the letter of the zebra line image in vehicle front road Breath is transmitted on single-chip microcontroller, detects that there are zebra stripes in front, odometer sends single-chip microcontroller to by obtaining pulse signal, calculates Vehicle driving range information;
(2) vehicle gone out according to the velocity information of vehicle speed sensor transmission, detections of radar is at a distance from zebra stripes, single-chip microcontroller Information is judged and is handled, the travel speed of the max. speed of permission and current vehicle is compared, when speed is less than When safe speed, vehicle keeps normally travel;When speed is greater than safe speed, and vehicle is able to satisfy vehicle at a distance from zebra stripes By reducing within the scope of speed to safe speed before zebra stripes;
(3) single-chip microcontroller control retarder work reduces speed, until speed is within the scope of defined safe speed;Work as speed Degree is greater than safe speed, but distance is not enough to reduce speed to safe range, when the operating range extrapolated reach zebra stripes away from From when, single-chip microcontroller send cutoff command to parking device, so that vehicle is stopped before zebra stripes.
Further, the vehicle driving range information that calculates is operating range=pulse accumulation number ÷ odometer line number × π × wheel diameter.
Another object of the present invention is to provide a kind of using the nearly zebra stripes forced deceleration of the vehicle or parking method The nearly zebra stripes forced deceleration of vehicle or parking device, the nearly zebra stripes forced deceleration of the vehicle or parking device are provided with
For judging and handling the information transmitted by image collecting device, vehicle speed sensor, odometer, radar, decision vehicle The single-chip microcontroller for whether slowing down or stopping,
It is connected with single-chip microcontroller, is sent to for acquiring the zebra line image in road, and by acquired image information The image collecting device of single-chip microcontroller;
It is connected with single-chip microcontroller, for acquiring the driving speed information of vehicle and the range information of zebra stripes, and is sent to The vehicle speed sensor and radar of single-chip microcontroller;
It is connected with single-chip microcontroller, for when vehicle travels, for generating pulse signal, and communicating information to monolithic Machine, extrapolate vehicle driving to zebra stripes distance odometer;
It is connected with single-chip microcontroller, for reducing the retarder of car speed;
It is connected with single-chip microcontroller, the parking device for stopping vehicle.
Further, described image acquisition device is mounted on the windshield of vehicle, and odometer code-disc is mounted on wheel and turns On axis, the measuring head of mileage is mounted on vehicle frame.
Advantages of the present invention and good effect are as follows: installation detection zebra stripes identification equipment and forced deceleration parking on vehicle Device, when the nearly zebra stripes of vehicle row are more than defined safe distance, vehicle starts automatic retarding or parking, guarantee driving safety.
1, detection vehicle front whether there is zebra stripes, and detect vehicle at a distance from zebra stripes;
2, Vehicle Speed is detected, and compares travel speed and safe speed, regulation speed;
3, it calculates vehicle driving distance, vehicle is made to stop before driving into zebra stripes.
The on-line tuning for the pid control parameter applied in the present invention and optimization have stronger adaptability and robustness, nothing By being merged from image, retains image detail, improve the Motion parameters and independent navigation ability of device.The device The fusion that can effectively realize more exposure images, improves the recognition capability of zebra line image.Finally Wavelet Image Fusion is calculated Method is evaluated.Or velocity information can be directly obtained using the pulse that encoder generates on velocity sensor, i.e. photoelectricity is compiled Code device and measurement object are coaxially connected, when measurement object rotation, drive photoelectric encoder to generate pulse signal, are conveyed to monolithic Machine control system is handled, and then measures speed.And data complicated compared to zebra stripes region road surface checking device process It handles relatively difficult, detects that speed and efficiency is not still high to have very big advantage.Since central processing unit maintenance dismounting is not square Just, realize that redundant configuration is more difficult, thus in contrast reliability and maintainability is poor;Meanwhile in same processor Different task is completed, to guarantee that real-time keeps system in effective expense big, programming is complicated, lacks the flexibility of extension.And it is sharp It is connected with single-chip microcontroller and carries out information processing, generates pwm signal with the software programming of single-chip microcontroller, it is opposite to realize letter with hardware It is much single.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the nearly zebra stripes forced deceleration of vehicle provided in an embodiment of the present invention or parking device;
Fig. 2 is the schematic illustration of the nearly zebra stripes forced deceleration of vehicle provided in an embodiment of the present invention or parking device;
Fig. 3 is that sensor provided in an embodiment of the present invention is acquired flow chart to zebra line image.
Fig. 4 is pid control parameter flow chart provided in an embodiment of the present invention.
Fig. 5 is the nearly zebra stripes forced deceleration of vehicle provided in an embodiment of the present invention or parking method flow chart.
In figure: 1, vehicle;2, image collecting device;3, vehicle speed sensor;4, odometer;5, radar;6, single-chip microcontroller;7, subtract Fast device;8, parking device.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
As depicted in figs. 1 and 2, the nearly zebra stripes forced deceleration of vehicle provided in an embodiment of the present invention or parking device include: Vehicle 1, image collecting device 2, vehicle speed sensor 3, odometer 4, radar 5, single-chip microcontroller 6, retarder 7, parking device 8.
4 code-disc of odometer is mounted in rotation shaft of wheel, mileage by image collecting device installation 2 on 1 windshield of vehicle It counts 4 gauge heads to be mounted on vehicle frame, image collecting device 2, vehicle speed sensor 3, odometer 4, radar 5 is connected with single-chip microcontroller 6, The output end connection retarder 7 and parking device 8 of single-chip microcontroller 6.
The present invention is made according to a conventional method using commercially available components and material.
As shown in figure 5, when using the nearly zebra stripes forced deceleration of vehicle or parking device: while the car is driving, image Zebra stripes image information in the constantly detection vehicle front road of acquisition device 2 is transmitted on single-chip microcontroller 5, if detecting front There are zebra stripes, odometer 4 sends single-chip microcontroller 5 to by obtaining pulse signal, calculates vehicle driving range information (operating range =pulse accumulation number ÷ odometer line number × π × wheel diameter), according to the velocity information of the transmission of vehicle speed sensor 3, radar 5 At a distance from zebra stripes, single-chip microcontroller 6 is judged and is handled to information the vehicle detected, by the max. speed of permission and currently The travel speed of vehicle is compared, and when speed is less than safe speed, vehicle keeps normally travel;When speed is greater than accident-free vehicle Vehicle is able to satisfy when fast, and at a distance from vehicle and zebra stripes to be reduced within the scope of speed to safe speed before through zebra stripes, single Piece machine 6, which controls the work of retarder 7, reduces speed, until speed is within the scope of defined safe speed;When speed is greater than safety Speed, but distance is not enough to reduce speed to safe range, when the operating range extrapolated reach zebra stripes apart from when, single-chip microcontroller 6 send cutoff command to parking device 8, and vehicle is made to stop before zebra stripes.
Since the abrasion of some crossing zebra stripes is very serious.Part zebra stripes region may not be connected to or by Connected domain decision rule is given up, this is inevitable.This requires carry out Image Acquisition must be accurate, in order to relatively accurately Zebra stripes region is obtained, connected domain criterion block number can be reduced, obtain entire zebra stripes region by shape segmentations.It can transport With the artificial co evolution group method of image, because segmentation is to provide service for further image analysis thereafter, it is therefore desirable to Cut zone be and using close ties.In order to improve the intelligence and automatization level that zebra stripes slow down or stop, adopt Device is improved with single-chip microcontroller and pid algorithm, basic procedure: zebra line image being adopted first with sensor Collection, then converts signal, is identified by PC machine to image, and communicates with PC machine foundation;It is soft using VB in PC machine Part is programmed design, establishes visualization interface, and detailed process is as shown in Figure 3.
It is connected with single-chip microcontroller, for acquiring the driving speed information of vehicle and the range information of zebra stripes, and is sent to The vehicle speed sensor and radar of single-chip microcontroller;Improved back-propagation is applied in PID control, realizes the online of pid control parameter Adjustment and optimization have stronger adaptability and robustness, and the algorithm, compared with the PID control before improving, effect is more Obviously.Detailed process is as shown in Figure 4.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (4)

1. a kind of nearly zebra stripes forced deceleration of vehicle or parking method, which is characterized in that the nearly zebra stripes forced deceleration of the vehicle Or parking method includes:
(1) while the car is driving, image collecting device constantly detects the biography of the zebra stripes image information in vehicle front road It is sent on single-chip microcontroller, detects that there are zebra stripes in front, odometer sends single-chip microcontroller to by obtaining pulse signal, calculates vehicle Operating range information;
(2) vehicle gone out according to the velocity information of vehicle speed sensor transmission, detections of radar is at a distance from zebra stripes, and single-chip microcontroller is to letter Breath is judged and is handled, and the travel speed of the max. speed of permission and current vehicle is compared, when speed is less than safety When speed, vehicle keeps normally travel;When speed is greater than safe speed, and vehicle is able to satisfy vehicle at a distance from zebra stripes and exists By being reduced within the scope of speed to safe speed before zebra stripes;
(3) single-chip microcontroller control retarder work reduces speed, until speed is within the scope of defined safe speed;When speed is big In safe speed, but distance is not enough to reduce speed to safe range, when the operating range extrapolated reach zebra stripes apart from when, Single-chip microcontroller sends cutoff command to parking device, and vehicle is made to stop before zebra stripes.
2. the nearly zebra stripes forced deceleration of vehicle as described in claim 1 or parking method, which is characterized in that described to calculate vehicle Operating range information is operating range=pulse accumulation number ÷ odometer line number × π × wheel diameter.
3. a kind of nearly zebra stripes pressure of vehicle using the nearly zebra stripes forced deceleration of vehicle described in claim 1 or parking method subtracts Speed or parking device, which is characterized in that the nearly zebra stripes forced deceleration of the vehicle or parking device are provided with
For judging and handling the information transmitted by image collecting device, vehicle speed sensor, odometer, radar, decision vehicle is The single-chip microcontroller of no deceleration or parking,
It is connected with single-chip microcontroller, sends monolithic to for acquiring the zebra line image in road, and by acquired image information The image collecting device of machine;
It is connected with single-chip microcontroller, for acquiring the driving speed information of vehicle and the range information of zebra stripes, and is sent to monolithic The vehicle speed sensor and radar of machine;
It is connected with single-chip microcontroller, for when vehicle travels, for generating pulse signal, and communicating information to single-chip microcontroller, pushing away Calculate vehicle driving to zebra stripes distance odometer;
It is connected with single-chip microcontroller, for reducing the retarder of car speed;
It is connected with single-chip microcontroller, the parking device for stopping vehicle.
4. the nearly zebra stripes forced deceleration of vehicle as claimed in claim 3 or parking device, which is characterized in that described image acquisition Device is mounted on the windshield of vehicle, and odometer code-disc is mounted in rotation shaft of wheel, and the measuring head of mileage is mounted on vehicle frame On.
CN201810678251.3A 2018-06-27 2018-06-27 A kind of nearly zebra stripes forced deceleration of vehicle or parking device Pending CN108944857A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110136485A (en) * 2019-06-20 2019-08-16 吉林大学 No traffic lights section pedestrian crosses zebra stripes automobile auxiliary prompting system and method
CN110304055A (en) * 2019-07-10 2019-10-08 厦门金龙联合汽车工业有限公司 A kind of car actively alleviates the control system and its application method of pedestrian impact
CN113581203A (en) * 2021-07-28 2021-11-02 国汽智控(北京)科技有限公司 Vehicle control method, apparatus, device, storage medium, and program product
CN114274928A (en) * 2021-12-01 2022-04-05 浙江亚太机电股份有限公司 Zebra crossing sight shelters from pedestrian collision avoidance control system based on vision system

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CN106355919A (en) * 2016-09-21 2017-01-25 山西省交通科学研究院 Machine-vision-based curve speed limitation calculating method and speeding warning device
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CN104369670A (en) * 2013-08-15 2015-02-25 深圳市赛格导航科技股份有限公司 Vehicle speed control method and system
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Publication number Priority date Publication date Assignee Title
CN110136485A (en) * 2019-06-20 2019-08-16 吉林大学 No traffic lights section pedestrian crosses zebra stripes automobile auxiliary prompting system and method
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CN110304055A (en) * 2019-07-10 2019-10-08 厦门金龙联合汽车工业有限公司 A kind of car actively alleviates the control system and its application method of pedestrian impact
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CN114274928A (en) * 2021-12-01 2022-04-05 浙江亚太机电股份有限公司 Zebra crossing sight shelters from pedestrian collision avoidance control system based on vision system

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