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 PDFInfo
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- 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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- 241000283070 Equus zebra Species 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 claims description 16
- 238000001514 detection method Methods 0.000 claims description 10
- 238000009825 accumulation Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000011218 segmentation Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000287107 Passer Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T7/00—Brake-action initiating means
- B60T7/12—Brake-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
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.
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Cited By (4)
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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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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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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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