CN108777065A - A kind of vehicle bend meeting detection prior-warning device and its method - Google Patents
A kind of vehicle bend meeting detection prior-warning device and its method Download PDFInfo
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- CN108777065A CN108777065A CN201810559003.7A CN201810559003A CN108777065A CN 108777065 A CN108777065 A CN 108777065A CN 201810559003 A CN201810559003 A CN 201810559003A CN 108777065 A CN108777065 A CN 108777065A
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/16—Anti-collision systems
- G08G1/166—Anti-collision systems for active traffic, e.g. moving vehicles, pedestrians, bikes
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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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
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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
- G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
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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
- G08G1/048—Detecting movement of traffic to be counted or controlled with provision for compensation of environmental or other condition, e.g. snow, vehicle stopped at detector
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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
- G08G1/052—Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
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Abstract
A kind of vehicle bend meeting detection prior-warning device of present invention offer and its method, including：Ultrasonic distance measuring module for detecting information of vehicles near bend；Image capture module for acquiring information of vehicles near bend；Processing module for the information of ultrasonic distance measuring module and/or image capture module acquisition to be carried out to analyzing processing；Display module for showing the result analyzed according to processing module.The bend prior-warning device of type design of the present invention, bend both sides uninterruptedly shoot and scan using two table top array cameras and two ultrasonic distance measuring modules, then the image of acquisition is identified and is detected by industrial control host, extract the driving information of vehicle, timely early warning is carried out to driver.Using the device and method described in type of the present invention, the traffic safety of the driver's seats restricted section of road such as mountain area bend can be improved, the generation of curve traffic accident can be effectively reduced.
Description
Technical field
The present invention relates to traffic safety technology field more particularly to a kind of vehicle bend meeting detection prior-warning device and its sides
Method.
Background technology
With the continuous construction of highway in China, the driving conditions of highway are become better and better；Meanwhile along with automotive field technology
Be constantly progressive, the manufacture level of automobile is continuously improved, and the trend risen is presented in speed of the automobile in road running.However,
This frequency for also resulting in traffic accident generation rises, and brings huge loss to personal and society.Wherein, traffic accident
Be easy to be happened near highway bend, when a major reason is near running car to bend, the visual field of driver by
Limitation, it is not known that the visual field blind area either with or without vehicle or pedestrian, part driver relaxes general idea in addition, in bend without
Slow down, so as to cause many traffic accidents.
Under the premise of such background, in order to improve the traffic safety of highway bend, traffic accident is reduced, is needed
A kind of safety device is designed to detect the vehicle of bend both sides, and early to the vehicle of bend both sides in the corner of highway
Driver provides alert.
Invention content
It is an object of the invention to solve the problems of the above-mentioned prior art, provide a kind of based on area array cameras and ultrasound
The bend vehicle detection and prior-warning device of wave range finder module, the vehicle of identification bend both sides, and after certain data analysis,
Timely early warning is proposed to the vehicle drivers of bend both sides or unilateral side, to reduce corner traffic accident, is increased
Traffic safety.
A kind of vehicle bend meeting detection prior-warning device, including：
Ultrasonic distance measuring module for detecting information of vehicles near bend；
Image capture module for acquiring information of vehicles near bend；
Processing module for the information of ultrasonic distance measuring module and/or image capture module acquisition to be carried out to analyzing processing；
Display module for showing the result analyzed according to processing module.
Further, vehicle bend meeting as described above detects prior-warning device, and described image acquisition module includes two
Area array cameras, the two table tops array camera are separately positioned on both sides of the bend centered on turning round a little.
Further, vehicle bend meeting as described above detects prior-warning device, and the processing module is industrial control host.
Further, vehicle bend meeting as described above detects prior-warning device, it is characterised in that further includes：For detecting
The humidity detecting module of air humidity.
A kind of vehicle bend meeting detection method for early warning, includes the following steps：
Step 1：Ultrasound module is scanned curved road surface, and the information of road surface of acquisition is fed back to processing mould
Block；
Step 2：Processing module judges whether there is vehicle according to the information of ultrasound module feedback and enters bend, if so,
Then enter step 3；If it is not, then return to step 1；
Step 3：Processing module assigns work order to image capture module, and image capture module collects vehicle on bend
Location information and feedback information to processing module；
Step 4：Processing module is according to feedack to determine whether there are security risks；If so, by security risk
Information shown by display module；If it is not, then display module does not work.
Further, method as described above, the security risk include：Bump against and the two kinds of situations that knock into the back；
Wherein bumping against judgment method is：If the location information analysis result of both sides vehicle of the processing module to travelling in opposite directions is
In the presence of the section to coincide, then there is security risk, there are the hidden danger of collision；
The judgment method to knock into the back is：If V1<V2, andOrAt
Vertical, then processing module judges there is the risk to knock into the back；
V1For the travel speed of front truck；
Wherein,
V2For the travel speed of rear car；
R1For the distance of leading vehicle distance speed measuring device；
R2Distance for rear car apart from speed measuring device；
R3Enter distance of the safe section apart from speed measuring device for bend at running car.
Further, method as described above, it is after step 2, further comprising the steps of before step 3：
By humidity detecting module to detect current climate, and the result of detection is fed back into processing module；If detecting
It is sleet sky or foggy weather, processing module assigns not work order to image capture module, and according to ultrasound module
The information detected is to determine whether there are security risks.
Advantageous effect：
The bend prior-warning device of type design of the present invention, using two table top array cameras and two ultrasonic distance measuring modules to bend
Both sides uninterruptedly shoot and scan, and then the image of acquisition is identified and is detected by industrial control host, extracts vehicle
Driving information, to driver carry out timely early warning.Using the device and method described in type of the present invention, mountain area bend etc. can be improved
The traffic safety of driver's seat restricted section of road can effectively reduce the generation of curve traffic accident.
Description of the drawings
Fig. 1 is the structural schematic diagram of type of the present invention.
Fig. 2 is the bend early warning system process chart based on area array cameras and velocity radar of type of the present invention.
Fig. 3 is the schematic layout pattern of the installation site in corner of type of the present invention.
Fig. 4 is vehicle identification schematic diagram.
The image that area array cameras returns when Fig. 5 is near bend without vehicle；
Fig. 6 is the image that area array cameras returns when having vehicle near bend.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, the technical solution below in the present invention carries out clear
Chu is fully described by, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts
Embodiment shall fall within the protection scope of the present invention.
As shown in Figure 1, prior-warning device provided by the invention includes condenser type humidity sensing module 1, the first area array cameras 2,
Industrial control host 3, the second area array cameras 4, the first ultrasonic distance measuring module 5, the second ultrasonic distance measuring module 6, the first LED control panels
7, the 2nd LED control panels 8, the first LED display 9, the second LED display 10 totally 10 component parts.
Wherein, the first area array cameras 2, the first ultrasonic distance measuring module 5, the first LED control panels 7, the first LED display 9
It it is one group, the second area array cameras 4, the second ultrasonic distance measuring module 6, the 2nd LED control panels 8, the second LED display 10 are one
Group, two groups of both sides for being separately mounted to prior-warning device, to collect the information of vehicles of bend both sides and provide warning information；
Condenser type humidity sensing module 1 is connected by RS232 with industrial control host 3, to examine the humidity of air；
Industrial control host 3 timely handles the information collected, and is controlled accordingly LED display；
First area array cameras 2 is connected by GigE interfaces industrial control host 3 respectively with the second area array cameras 4, and for acquiring
The image information of bend both sides judges the speed, volume and the distance and position that carry out vehicle for industrial control host 3；
First ultrasonic distance measuring module 5 and the second ultrasonic distance measuring module 6 under conditions of the insufficient visibilities such as greasy weather according to
So there is good working performance, be connected respectively with industrial control host 3 by RS232 interface, device both sides be installed on, for detecting
The speed and range information of both sides vehicle carry out decision for system；
First LED control panels 7 and the 2nd LED control panels 8 are connected by RS232 interface with industrial control host respectively, for straight
The image for connecing the first LED display 9 of control and the second LED display 10 is shown；
First LED display 9 and the second LED display 10 are driven for passing to warning information with image, written form
The person of sailing.
When work, it is scanned first by the first ultrasonic distance measuring module 5,6 road pavement of the second ultrasonic distance measuring module, it will
Collected information is converted to digital signal and passes to industrial control host 3.Industrial control host 3 judge whether there is vehicle will enter it is curved
Road, when judging result is to have vehicle that will enter bend, industrial control host 3 is under the first area array cameras 2, the second area array cameras 4
Up to work order, the first area array cameras 2, the second area array cameras 4 will be acquired road vehicle information, collected figure
Industrial control host 3 is passed to after being converted to digital signal as information, collected information is carried out analyzing processing, obtained by industrial control host 3
Go out location information of the vehicle when bend will be entered on entire road.
Simultaneously industrial control host 3 will calculate analysis it can happen that.When two vehicles are travelled in opposite directions into bend, industry control master
Machine 3 will assign work order by the LED control panels of both sides to the LED display on both sides, will be shown on the LED display of both sides
The traveling lane and speed information for showing opponent vehicle react for both sides driver, avoid emergency case the reaction time in time
Deficiency causes traffic accident.
When two vehicles are to travel in the same direction, front truck has passed over bend, rear car do not know front truck there are when, the device is then to preceding
The track and speed information of vehicle and rear car are acquired, and collected information is analyzed by industrial control host 3, judges whether to chase after
The risk of tail, when there is the risk to knock into the back, industrial control host is by the LED by the LED control panels of rear car side to rear car side
Display screen assigns work order and gives rear car early warning, prevents to knock into the back.
In view of ultrasonic distance measuring module is influenced very little by weather, and the working condition of area array cameras is influenced by weather
This very big actual conditions, if worked under sleet foggy weather, information that area array cameras was collected will will produce larger
Error, influence information judgement.Therefore when having installed condenser type humidity sensing module 1 on device additional for detection device work
Weather, when working under sleet foggy weather, road surface industrial control host 3 will turn off the work of area array cameras, at this time will be only
There are two ultrasonic distance measuring modules to work, the information that LED display is shown only has speed and warning information.
Method for early warning is now further illustrated the present invention, as shown in figures 2-6, is included the following steps：
Step 1)：Start, system power supply prepares；
Step 2)：System starts, every variable detection and initialization；
Step 3)：Ultrasound module starts scan pattern, is scanned to curved road surface, acquires information of road surface and feeds back
It gives
Industrial control host；
Step 4)：It judges whether there is vehicle and enters bend, if so, carrying out in next step, if it is not, then return to step 3)；
Step 5)：Determine whether sleet foggy weather according to the return information of capacitance type humidity sensor, if so, into
Row step 7), if it is not, then carrying out step 6)；
Since the work of area array cameras is affected by weather, condenser type humidity sensor mould is housed in the outside of whole device
Block, industrial control host receive the information of condenser type humidity sensing module and analyze information at any time at any time, when feeding back to industrial control host
Information is after analysis, and when present weather conditions are by the normal work for influencing area array cameras, the industrial control host area array cameras that will order stops
It only works, is only worked by ultrasonic distance measuring module, avoid operating error of the area array cameras under sleet foggy weather.
Step 6)：Industrial control host controls area array cameras and starts to work；Under jump into row step 8)；
Step 7)：Current weather is larger to area array cameras work influence, and industrial control host is not assigned work to area array cameras and referred to
It enables；Under jump into row step 9)；
Step 8)：Area array cameras collects location information of the vehicle on bend and feedback information is to industrial control host；
Step 9)：Industrial control host is analyzed and is handled to return information；It is specific as follows：
1, area array cameras 1 (5), 2 (6) are mounted on the place that corner faces both sides road, usually keep standby mode.When
When receiving the work order of industrial control host (3), the area array cameras of both sides will start to work, and road pavement is shot, obtained
Image information is transmitted to industrial control host (3) after being converted to digital signal, and industrial control host (3) carries out collected information at analysis
Reason, obtains location information of the vehicle on bend.When the analysis result of industrial control host (3) road pavement is not have vehicle, face battle array
When camera reenters standby mode processing position information, due to there is no the picture in section when vehicle and thering is vehicle to enter section
When picture gray value it is different, then return gray value of the digital signal of industrial control host for existing vehicle when obviously with sky
Section is different, then can obtain location information of the vehicle on bend.
2, vehicle enters bend and judges and speed information acquisition and information processing：
The function realizes that ultrasonic distance measuring module remains work shape by two ultrasonic distance measuring modules 1 (5), 2 (6)
State, collected information pass to industrial control host (3) in time after being converted to digital signal.When there is no vehicle to enter bend,
Ultrasonic distance measuring module road pavement is scanned, and has detected whether that vehicle will enter bend.When having vehicle that will enter bend,
Ultrasonic distance measuring module will be detected the speed of vehicle, and the information collected is timely fed back to industrial control host (3), supply
Industrial control host (3) carries out decision.
Ultrasonic distance measuring module ranging formula：
In formula,
GtFor emitter antenna gain,
PSFor laser emitting power；
TA1For the atmospheric transmissivity of transmitter to target；
ηtFor ejector system efficiency；
For beamwidth or divergence；
R1For transmitter to target range；
Γ is target laser section；
TA2For target to receiver atmospheric transmissivity；
R2For target to receiver distance；
D is to receive window diameter；
ηrFor receiver system efficiency；
Ultrasonic distance measuring module tests the speed formula：
V=(R21-R20)·f
In formula,
V is travel speed of the automobile near bend；
F is the working frequency of ultrasonic distance measuring module；
R21、R20For the distance for the vehicle distances test device that adjacent radar return signal twice measures.Industrial control host pair
Radar feedack is handled in real time, is detected in real time to the vehicle speed near bend.
Step 10)：Security risk is judged whether there is, if so, step 11) is carried out, if it is not, then jumping to step 13)；
Step 11)：Judge security risk type；Particular content is as follows：
1, bump against hidden danger judgment method：
If the location information analysis result of both sides vehicle of the industrial control host to travelling in opposite directions is in the presence of the section to coincide,
There are security risks, and there are the hidden danger of collision, provide warning information.
2, the hidden danger that knocks into the back judgment formula：
If V1>V2Or V1=V2Then it is judged as safety, does not provide warning information；
If V1<V2When system will be determined further,
If
OrIt sets up, then system is judged as there is the risk to knock into the back, will provide alert to rear car
Information.
In formula：
V1For the travel speed of front truck；
V2For the travel speed of rear car；
R1For the distance of leading vehicle distance speed measuring device；
R2Distance for rear car apart from speed measuring device；
R3Enter distance of the safe section apart from speed measuring device for bend at running car.
Step 12)：The LED display early warning that both sides are controlled if being in the presence of hidden danger is bumped against if judging result, if judging result
The LED display early warning of rear car side is then controlled for the hidden danger that knocks into the back；Particular content is as follows：
Industrial control host will carry out operational analysis to the information collected, detect existing risk between two vehicles be bump against or
It knocks into the back, early warning is carried out on the LED display of both sides if the result judged is shown as existing and bumps against hidden danger, if the result judged
It is shown as then only carrying out early warning on the LED display of rear car side in the presence of the hidden danger that knocks into the back.When there is no security risk, industry control
Host will not assign work order to LED control panels.
Step 13)；Security risk is detected to be completed with early warning, return to step 3).
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (7)
1. a kind of vehicle bend meeting detects prior-warning device, which is characterized in that including：
Ultrasonic distance measuring module for detecting information of vehicles near bend；
Image capture module for acquiring information of vehicles near bend；
Processing module for the information of ultrasonic distance measuring module and/or image capture module acquisition to be carried out to analyzing processing；
Display module for showing the result analyzed according to processing module.
2. vehicle bend meeting according to claim 1 detects prior-warning device, which is characterized in that described image acquisition module
Including two table top array cameras, which is separately positioned on both sides of the bend centered on turning round a little.
3. vehicle bend meeting according to claim 1 detects prior-warning device, which is characterized in that the processing module is work
Control host.
4. detecting prior-warning device according to any vehicle bend meetings of claim 1-3, it is characterised in that further include：For
Detect the humidity detecting module of air humidity.
5. a kind of vehicle bend meeting detects method for early warning, which is characterized in that include the following steps：
Step 1：Ultrasound module is scanned curved road surface, and the information of road surface of acquisition is fed back to processing module；
Step 2：Processing module judges whether there is vehicle according to the information of ultrasound module feedback and enters bend, if so, into
Enter step 3；If it is not, then return to step 1；
Step 3：Processing module assigns work order to image capture module, and image capture module collects position of the vehicle on bend
Confidence breath and feedback information is to processing module；
Step 4：Processing module is according to feedack to determine whether there are security risks；If so, by the letter of security risk
Breath is shown by display module；If it is not, then display module does not work.
6. according to the method described in claim 5, it is characterized in that, the security risk includes：Bump against and the two kinds of situations that knock into the back；
Wherein bumping against judgment method is：If processing module is to exist to the location information analysis result of the both sides vehicle travelled in opposite directions
, then there is security risk in the section to coincide, there are the hidden danger of collision；
The judgment method to knock into the back is：If V1<V2, andOrIt sets up, then
Processing module judges there is the risk to knock into the back；
V1For the travel speed of front truck；
Wherein,
V2For the travel speed of rear car；
R1For the distance of leading vehicle distance speed measuring device；
R2Distance for rear car apart from speed measuring device；
R3Enter distance of the safe section apart from speed measuring device for bend at running car.
7. according to the method described in claim 5, it is characterized in that, further including following step before step 3 after step 2
Suddenly：
By humidity detecting module to detect current climate, and the result of detection is fed back into processing module；If detecting it is rain
Snowy day or foggy weather, processing module assigns not work order to image capture module, and is detected according to ultrasound module
To information to determine whether there are security risks.
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