CN108922245A - A kind of bad section method for early warning of highway sighting distance and system - Google Patents
A kind of bad section method for early warning of highway sighting distance and system Download PDFInfo
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- CN108922245A CN108922245A CN201810736536.8A CN201810736536A CN108922245A CN 108922245 A CN108922245 A CN 108922245A CN 201810736536 A CN201810736536 A CN 201810736536A CN 108922245 A CN108922245 A CN 108922245A
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/002—Generating a prealarm to the central station
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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
- G08G1/165—Anti-collision systems for passive traffic, e.g. including static obstacles, trees
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Abstract
The present invention provides a kind of bad section barrier method for early warning of highway sighting distance, belong to highway communication engineering field.This method breaks the barriers detection device transmission obstacle detection signal to control centre, and control centre judges whether there is barrier according to obstacle detection signal；When there are barrier, control centre determines the section position where barrier according to the identification information that obstacle detection signal includes, the corresponding warning information publication facility in section position where control centre controls barrier exports pre-warning signal, to be monitored to the range for being unable to satisfy stopping sight distance section and provide early warning, the generation to avoid traffic accident to driver.
Description
Technical field
The present invention relates to highway communication engineering field, in particular to the bad section method for early warning of a kind of highway sighting distance and it is
System.
Background technique
The bend condition of highway has important influence to traffic safety, the center point being arranged due to the curve inner side of highway
Every band or antiglare shield, vehicle is easy to appear stopping sight distance deficiency during bend section travels, may be because of stopping sight distance not
Foot causes vehicle braking distance insufficient or takes measures improper and accident occurs.
In the prior art, the stopping sight distance of the vehicle of road driveway is easy to appear deficiency, and there are security risks.Therefore, it needs
The range for being unable to satisfy stopping sight distance section is monitored and provide early warning to driver.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of bad section barrier method for early warning of highway sighting distance, Neng Gouji
When prompting driver take the measure for avoiding barrier.The technical solution is as follows：
The embodiment of the invention provides a kind of bad section method for early warning of highway sighting distance, the method includes：
Be mounted on the obstacle detector in the bad section of sighting distance according to the test signal that is sent to highway and it is received with
The corresponding return signal of the test signal, dyspoiesis analyte detection signal；
The obstacle detector sends obstacle detection signal to control centre, and the obstacle detection signal includes
The corresponding identification information of the obstacle detector；
The control centre judges on the bad section of highway sighting distance according to the obstacle detection signal with the presence or absence of obstacle
Object；
When, there are when the barrier, the control centre believes according to the detection of obstacles on the bad section of highway sighting distance
Number identification information for including determines the section position where the barrier；
The corresponding warning information publication facility output in section position where the control centre controls the barrier is pre-
Alert signal.
Optionally, the obstacle detection signal further includes the information for indicating detection of obstacles distance, the obstacle quality testing
Ranging is from the distance between the expression obstacle detector and barrier；
The control centre judges on the bad section of highway sighting distance according to the obstacle detection signal with the presence or absence of obstacle
Object, including：
The control centre obtains the detection of obstacles distance from the obstacle detection signal, by the barrier
Detecting distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the highway sighting distance is determined not
There are barriers on good section；
If the detection of obstacles distance is not less than preset detection of obstacles distance threshold, the highway sighting distance is determined
Barrier is not present on bad section.
Optionally, the obstacle detection signal further includes the information for indicating detection of obstacles distance, the obstacle quality testing
Ranging is from the distance between the expression obstacle detector and barrier；
The control centre judges on the bad section of highway sighting distance according to the obstacle detection signal with the presence or absence of obstacle
Object, including：
The control centre obtains the detection of obstacles distance from the obstacle detection signal, by the barrier
Detecting distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the control centre will be pre-
If obtaining the detection of obstacles distance from the obstacle detection signal in the period to be compared；
If the detection of obstacles distance determines that there are obstacles on the bad section of highway sighting distance there is no variation
Object；
If the detection of obstacles distance changes, determine that there is no obstacles on the bad section of highway sighting distance
Object.
Optionally, the obstacle detection signal further includes the information for indicating the detection of obstacles time, the obstacle quality testing
The time that the test signal that surveying the time indicates that the obstacle detector is sent is blocked；
The control centre judges on the bad section of highway sighting distance according to the obstacle detection signal with the presence or absence of obstacle
Object, including：
The control centre obtains the detection of obstacles time from the obstacle detection signal, by the barrier
Detection time is compared with preset detection of obstacles time threshold；
If the detection of obstacles time is less than preset detection of obstacles time threshold, the highway sighting distance is determined not
Barrier is not present on good section；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, the highway sighting distance is determined
There are barriers on bad section.
Optionally, the control centre determines the barrier according to the identification information that the obstacle detection signal includes
The section position at place, including：
The control centre is previously stored with the identification information of obstacle detector and the corresponding relationship of section position, root
The corresponding section position of the identification information is found in the corresponding relationship according to the identification information, as where barrier
Section position.
The embodiment of the invention provides a kind of bad section early warning system of highway sighting distance, the system comprises：Obstacle quality testing
It surveys device, control centre and warning information and issues facility；
The obstacle detector is configured as according to the test signal and the received and test sent to highway
The corresponding return signal of signal, dyspoiesis analyte detection signal；
The obstacle detector sends obstacle detection signal to control centre, and the obstacle detection signal includes
The corresponding identification information of the obstacle detector；
The control centre be configured as being judged according to the obstacle detection signal on the bad section of highway sighting distance whether
There are barriers；
When, there are when the barrier, the control centre is configured as according to the obstacle on the bad section of highway sighting distance
The identification information that analyte detection signal includes determines the section position where the barrier；
The corresponding warning information publication facility output in section position where the control centre controls the barrier is pre-
Alert signal.
Optionally, the obstacle detection signal further includes the information for indicating detection of obstacles distance, the obstacle quality testing
Ranging is from the distance between the expression obstacle detector and barrier；
The control centre is additionally configured to obtain the detection of obstacles distance from the obstacle detection signal, will
The detection of obstacles distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the highway sighting distance is determined not
There are barriers on good section；
If the detection of obstacles distance is not less than preset detection of obstacles distance threshold, the highway sighting distance is determined
Barrier is not present on bad section.
Optionally, the obstacle detection signal further includes the information for indicating detection of obstacles distance, the obstacle quality testing
Ranging is from the distance between the expression obstacle detector and barrier；
The control centre is additionally configured to obtain the detection of obstacles distance from the obstacle detection signal, will
The detection of obstacles distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the control centre will be pre-
If obtaining the detection of obstacles distance from the obstacle detection signal in the period to be compared；
If the detection of obstacles distance determines that there are obstacles on the bad section of highway sighting distance there is no variation
Object；
If the detection of obstacles distance changes, determine that there is no obstacles on the bad section of highway sighting distance
Object.
Optionally, the obstacle detection signal further includes the information for indicating the detection of obstacles time, the obstacle quality testing
The time that the test signal that surveying the time indicates that the obstacle detector is sent is blocked；
The control centre is additionally configured to obtain the detection of obstacles time from the obstacle detection signal, will
The detection of obstacles time is compared with preset detection of obstacles time threshold；
If the detection of obstacles time is less than preset detection of obstacles time threshold, the highway sighting distance is determined not
Barrier is not present on good section；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, the highway sighting distance is determined
There are barriers on bad section.
Optionally, the control centre is additionally configured to be previously stored with the identification information of obstacle detector and section
The corresponding relationship of position finds the corresponding section position of the identification information according to the identification information in the corresponding relationship
It sets, as the section position where barrier.
Technical solution bring beneficial effect provided in an embodiment of the present invention is：
The present invention provides a kind of bad section barrier method for early warning of highway sighting distance, the detection device that breaks the barriers is sent
Obstacle detection signal judges whether there is barrier according to obstacle detection signal to control centre, control centre；Work as presence
When barrier, control centre determines the section position where barrier according to the identification information that obstacle detection signal includes, control
The corresponding warning information publication facility in section position where control barrier in center processed exports pre-warning signal, thus to that can not expire
The range in sufficient stopping sight distance section is monitored and provides early warning, the generation to avoid traffic accident to driver.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is implemented involved in the bad section barrier method for early warning of a kind of highway sighting distance provided in an embodiment of the present invention
The schematic diagram of environment；
Fig. 2 is a kind of flow chart of the bad section barrier method for early warning of highway sighting distance provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of the bad section barrier method for early warning of highway sighting distance provided in an embodiment of the present invention；
Fig. 4 is a kind of block diagram of the bad section barrier early warning system of highway sighting distance provided in an embodiment of the present invention；
Fig. 5 is two dimensional laser scanning rangefinder provided in an embodiment of the present invention in the bad section detection barrier of highway sighting distance
Schematic diagram；
Fig. 6 is two dimensional laser scanning rangefinder provided in an embodiment of the present invention in the bad section detection barrier of highway sighting distance
Schematic diagram.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 be the bad section barrier method for early warning of a kind of highway sighting distance that exemplifies is implemented according to exemplary partial involved by
And implementation environment schematic diagram, as shown in Figure 1, the implementation environment may include obstacle detector, control centre and pre-
Alert information issues facility.It should be understood that the quantity of the obstacle detector of the implementation environment can be multiple, such as：Obstacle
Analyte detection device can be two, respectively obstacle detector 11 and obstacle detector 12.Control centre can be
One, be control centre 13.It can be multiple that warning information, which issues facility, such as：It can be two that warning information, which issues facility,
Respectively warning information publication facility 14 and warning information issue facility 15.
Obstacle detector is the equipment for being capable of detecting whether barrier, and obstacle detector can be to be equipped with
The device of sensor, wherein sensor can be infrared sensor, geomagnetic sensor, single-point type laser range sensor, two dimension
Laser scanning and ranging instrument and three-dimensional laser radar etc..
Control centre can be to be able to carry out the computer equipment for receiving signal and Data Management Analysis.
Warning information publication facility be in the bad section of highway sighting distance by the forms such as acousto-optic-electric to driver and
When early warning, warning information publication facility can be changeable-message sign, Horn and warning lamp etc..
Wherein, it is communicated, is controlled by the way of wired or wireless communication between obstacle detector and control centre
It is communicated by the way of wired or wireless communication between center processed and warning information publication facility.
An exemplary embodiment of the present disclosure provides a kind of bad section barrier method for early warning of highway sighting distance, such as Fig. 2 institute
Show, the process flow of this method may include following step：
Step S110, be mounted on the obstacle detector in the bad section of sighting distance according to the test signal sent to highway and
Received return signal corresponding with test signal, dyspoiesis analyte detection signal；
Step S120, obstacle detector send obstacle detection signal to control centre, obstacle detection signal packet
Include the corresponding identification information of obstacle detector；
Step S130, control centre judge on the bad section of highway sighting distance according to obstacle detection signal with the presence or absence of obstacle
Object；
Step S140, when, there are when barrier, control centre is according to obstacle detection signal on the bad section of highway sighting distance
Including identification information determine the section position where barrier.
Step S150, the corresponding warning information publication facility output in section position where control centre controls barrier are pre-
Alert signal.
The present invention provides a kind of bad section barrier method for early warning of highway sighting distance, the detection device that breaks the barriers is sent
Obstacle detection signal judges whether there is barrier according to obstacle detection signal to control centre, control centre；Work as presence
When barrier, control centre determines the section position where barrier according to the identification information that obstacle detection signal includes, control
The corresponding warning information publication facility in section position where control barrier in center processed exports pre-warning signal, thus to that can not expire
The range in sufficient stopping sight distance section is monitored and provides early warning, the generation to avoid traffic accident to driver.
Wherein, obstacle detection signal further includes the information for indicating detection of obstacles distance, and detection of obstacles distance indicates
The distance between obstacle detector and barrier；
Control centre judges that whether there are obstacles on the bad section of highway sighting distance according to obstacle detection signal, including：
Control centre obtains detection of obstacles distance from obstacle detection signal, by detection of obstacles distance with it is preset
Detection of obstacles distance threshold is compared；
If detection of obstacles distance is less than preset detection of obstacles distance threshold, determine on the bad section of highway sighting distance
There are barriers；
If detection of obstacles distance is not less than preset detection of obstacles distance threshold, the bad section of highway sighting distance is determined
It is upper that barrier is not present.
Wherein, obstacle detection signal further includes the information for indicating detection of obstacles distance, and detection of obstacles distance indicates
The distance between obstacle detector and barrier；
Control centre judges that whether there are obstacles on the bad section of highway sighting distance according to obstacle detection signal, including：
Control centre obtains detection of obstacles distance from obstacle detection signal, by detection of obstacles distance with it is preset
Detection of obstacles distance threshold is compared；
If detection of obstacles distance is less than preset detection of obstacles distance threshold, control centre will be in preset time period
The interior detection of obstacles distance that obtains from obstacle detection signal is compared；
If detection of obstacles distance determines that there are barriers on the bad section of highway sighting distance there is no variation；
If detection of obstacles distance changes, determine that there is no barriers on the bad section of highway sighting distance.
Wherein, obstacle detection signal further includes the information for indicating the detection of obstacles time, and the detection of obstacles time indicates
The time that the test signal that obstacle detector is sent is blocked；
Control centre judges that whether there are obstacles on the bad section of highway sighting distance according to obstacle detection signal, including：
Control centre obtains the detection of obstacles time from obstacle detection signal, by the detection of obstacles time with it is preset
Detection of obstacles time threshold is compared；
If the detection of obstacles time is less than preset detection of obstacles time threshold, determine on the bad section of highway sighting distance
There is no barriers；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, the bad section of highway sighting distance is determined
On there are barriers.
Wherein, control centre determines the section position where barrier according to the identification information that obstacle detection signal includes
It sets, including：
Control centre is previously stored with the identification information of obstacle detector and the corresponding relationship of section position, according to mark
Know information and find the corresponding section position of identification information in corresponding relationship, as the section position where barrier.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
Fig. 3 is a kind of flow chart of the bad section barrier method for early warning of highway sighting distance provided in an embodiment of the present invention.It should
Method is as performed by a kind of bad section barrier early warning system of highway sighting distance, referring to Fig. 3, S201- step that the method comprising the steps of
Rapid S211.Lower mask body introduces each step of this method.
Step S201, be mounted on the obstacle detector in the bad section of sighting distance according to the test signal sent to highway and
Received return signal corresponding with test signal, dyspoiesis analyte detection signal；
In embodiments of the present invention, obstacle detector is used to detect the barrier in the bad section of highway sighting distance, obstacle
Object can be stone, other vehicles on road surface and drop article or fault car.
The two sides in the bad section of highway sighting distance are arranged in obstacle detector.By taking unidirectional two-lane highway as an example, obstacle
The set-up mode of analyte detection device can be mounted in the guardrail board of both sides of highway to be equally spaced, and the size at interval can basis
Actual conditions are set, such as：It can be set to 8m.
Obstacle detector is provided with sensor, and sensor can provide the data that barrier presence or absence is judged
Or signal.Wherein, sensor can be swept for infrared sensor, geomagnetic sensor, single-point type laser range sensor, two-dimensional laser
Retouch rangefinder and three-dimensional laser radar etc..
Step S202, obstacle detector send obstacle detection signal to control centre, the obstacle detection signal
Including the corresponding identification information of obstacle detector.
Wherein, the identification information that obstacle detection signal includes is for identifying different obstacle detectors.
In embodiments of the present invention, the obstacle detection signal that obstacle detector is sent, so that control centre can be with
Analyzing the section according to the obstacle signal, whether there are obstacles, what control centre can send according to obstacle detector
The detection of obstacles distance or detection of obstacles time that obstacle detection signal includes are analyzed, and the detection of obstacles is apart from table
Show the distance between obstacle detector and barrier；The detection of obstacles time indicates the test that obstacle detector is sent
The time that signal is blocked.
Step S203, control centre obtain detection of obstacles distance from obstacle detection signal.
Detection of obstacles distance is compared by step S204 with preset detection of obstacles distance threshold, to determine barrier
Hinder whether analyte detection distance is less than preset detection of obstacles distance threshold, if it is not, S205 is thened follow the steps, if so, executing
Step S206.
Step S205 determines that barrier is not present on the bad section of highway sighting distance.
Wherein, detection of obstacles distance threshold is preset, still, according to the biography being arranged in obstacle detector
The difference of sensor, detection of obstacles distance threshold set-up mode is not identical, and the set-up mode of detection of obstacles distance threshold can be with
For detection of obstacles distance threshold is set as a fixed value, it may be set to be different check bits and install different barriers
Hinder analyte detection distance threshold.
The sensor being arranged inside obstacle detector is single-point type laser range sensor, detection of obstacles distance
Threshold value is set as fixed value, detection of obstacles distance threshold generally can according to side trip on the left of highway and inside curb-to-curb width it
With it is identified, 4.25m-4.50m is generally arranged in the size of detection of obstacles distance.
The sensor being arranged inside obstacle detector is two dimensional laser scanning rangefinder, and detection of obstacles is apart from threshold
Value is set as changing value, and the setting of specific detection of obstacles distance is as follows:
As shown in figure 5, the fan-shaped region of two dimensional laser scanning rangefinder detection is using O as the center of circle, with LRFor radius sector
Region, LRFor the ranging distance of two dimensional laser scanning instrument, θ is scan angle, which is any detection light beam and sighting distance blind area
The angle of left border, LTFor the sum of side trip and inside curb-to-curb width on the left of highway, LT′For detection of obstacles distance threshold,
The sector of two dimensional laser scanning rangefinder detection and the intersection point of sighting distance blind area one are B, and critical angle α is line OA and OB angle,As θ≤α, LT′=LR；Work as θ>When α,When θ=90 degree, LT′=LT；Obstacle
Distance threshold L is surveyed between objectT′, can be determined according to current scan angle theta.
It should be noted that three-dimensional laser radar can measure azimuth, pitch angle and detecting distance, three-dimensional space is determined
The position of middle arbitrary point, three-dimensional laser radar are divided into single line laser radar and multi-line laser radar according to the number of laser again,
Three-dimensional laser radar is similar with the application principle of single-point type laser range sensor and two dimensional laser scanning rangefinder, no longer superfluous
It states.
Step S206, control centre will be obtained from obstacle detection signal within a preset period of time detection of obstacles away from
From.
Step S207, determine detection of obstacles distance whether change, if detection of obstacles distance there is no variation,
Then follow the steps S208；If detection of obstacles distance changes, S209 is thened follow the steps.
In embodiments of the present invention, preset time can be set according to the actual situation, the value range of preset time
It can be 0.2s-0.4s.Control centre can obstacle quality testing on more same obstacle detector detection same position
Whether ranging, can also detection of obstacles distance of the more same obstacle detector in same scan angle from changing
Whether change, the comparison which kind of situation control centre carries out is carried out according to the sensor being arranged inside obstacle detector
Setting.
In the undesirable section of highway sighting distance, there are fixed barriers and mobile vehicle, are solid to distinguish barrier
The vehicle that fixed barrier still moves, can be by judging whether detection of obstacles distance changes within a preset time
It distinguishes, preset time is longer, and accuracy is higher, the size of preset time decides the accuracy rate of testing result.
Step S208 determines that there are barriers on the bad section of highway sighting distance.
Step S209 determines that barrier is not present on the bad section of highway sighting distance.
The sensor being arranged inside obstacle detector is single-point type laser range sensor, due to same single-point type
The position of laser range sensor detection will not change, therefore, control centre's more same obstacle within a preset time
Whether ranging is from changing between the barrier of analyte detection device detection.
The sensor being arranged inside obstacle detector is two dimensional laser scanning rangefinder, due to two dimensional laser scanning
Rangefinder can also change with the variation scan angle theta of time, so that the position of scanning can also change, therefore, in order to
Detect the barrier with the presence or absence of fixation on same position, within a preset period of time, the more same obstacle quality testing of control centre
Surveying device, whether ranging is from changing between the barrier in same scan angle, if there is no becoming for detection of obstacles distance
Change, determines that there are barriers on the bad section of highway sighting distance；If detection of obstacles distance changes, highway sighting distance is determined not
Barrier is not present on good section.
In embodiments of the present invention, can directly according on the bad section of detection of obstacles Distance Judgment highway sighting distance whether
There are barriers, specially：Control centre obtains detection of obstacles distance from obstacle detection signal, by detection of obstacles away from
It is compared from preset detection of obstacles distance threshold；If detection of obstacles distance is less than preset detection of obstacles distance
Threshold value then determines that there are barriers on the bad section of highway sighting distance；If detection of obstacles distance is not less than preset obstacle quality testing
Distance threshold is surveyed, then determines that there is no barriers on the bad section of highway sighting distance.
The specific steps that detection of obstacles distance in this step is compared with preset detection of obstacles distance threshold
It has been described in front, which is not described herein again.
Obstacle detector in the embodiment of the present invention can be infrared sensor, and infrared sensor is emitted using one end
One end is received to emission mode, and when transmitting light beam is interdicted by barrier, receiving end does not just receive optical signal, accordingly judgement inspection
Whether have barrier, since mobile vehicle will also result in the screening of detection light beam when through detection light beam if surveying in beam range
It is disconnected, it can include directly being judged the detection of obstacles time according to obstacle detection signal therefore, the detection of obstacles time
Indicate the time that the test signal that obstacle detector is sent is blocked, control centre judges public according to obstacle detection signal
Whether there are obstacles on the bad section of road sighting distance, including：Control centre obtains barrier from the obstacle detection signal
The detection of obstacles time is compared by detection time with preset detection of obstacles time threshold；If the detection of obstacles time
Less than preset detection of obstacles time threshold, then determine that there is no barriers on the bad section of highway sighting distance；If the obstacle
The analyte detection time is not less than preset detection of obstacles time threshold, then determines that there are obstacles on the bad section of highway sighting distance
Object.
Step S210, control centre are previously stored with the identification information pass corresponding with section position of obstacle detector
System, the corresponding section position of identification information is found according to identification information, as the section where barrier in corresponding relationship
Position.
The identification information of obstacle detector is the ID of obstacle detector, and section position can be by highway
Mileage pile No. and the mode of the distance combination away from the mileage pile No. indicate.Such as：The ID of obstacle detector is respectively set to
1,2,3,4,5 ..., section position is illustrated by taking mileage pile No. K10 as an example, respectively in K10+50m, K10+100m, K10+
The place 150m, K10+200m, K10+250m ... places obstacles analyte detection device.
It in embodiments of the present invention, can be according to mark after control centre is previously stored with the table of above-mentioned corresponding relationship
Information determines that section position corresponding to identification information, the position are the section position where barrier.
Step S211, the corresponding warning information publication facility output in section position where control centre controls barrier are pre-
Alert signal.
Warning information publication facility be in the bad section of highway sighting distance by the forms such as acousto-optic-electric to driver and
When early warning, warning information publication facility can be one or more of following manner combination：Changeable-message sign, soprano saxhorn
Angle, warning lamp etc., as shown in fig. 6, the schematic diagram of warning lamp and changeable-message sign combination settings.
In the embodiment of the present invention, LED variable information board is can be used in changeable-message sign, is arranged in the bad section starting point of sighting distance
Or upstream end, such as：It is arranged at the 150m of upstream.According to requirement of engineering, LED variable information board can use open side type, cantilever
The mounting structures such as formula, gantry type.Cantilevered and the LED variable information board display area size of gantry type mounting structure are big, can be same
When show or issue more graph-text contents.Open side type LED variable information board can be set since the display space of a whole page is smaller in center point
At band.To improve the warning function to driver, the picture and text of display can be taken in the way of certain frequency flashing.
Horn can be set at median strip, can issue voice warning information, and voice messaging can be：
" front event ", " danger ", " keeping to the right ", " paying attention to evacuation front vehicles and danger " etc..Horn can also be with
It is applied in combination with LED variable information board, at centrally disposed dividing strip, while issuing pictograph warning and voice warning letter
Breath.
Warning lamp in bend sighting distance restricted section of road upstream can be arranged one or continuously be arranged according to certain intervals more.Nothing
When pre-warning signal is issued, warning lamp is in close state；When control centre detects barrier, control centre controls warning lamp
It is opened according to agreement color or working method, provides warning information to driver.For example, early warning can take red light simultaneously when working
It is flashed according to 90 or 120 beats/min of Frequency Synchronizations.
In embodiments of the present invention, control centre can also send cloud for the warning information of barrier present on section
On platform, so as to checking for other staff.
Fig. 4 is the bad section barrier early warning system of a kind of highway sighting distance provided in an embodiment of the present invention, and system includes：Barrier
Hinder analyte detection device 410, control centre 420 and warning information publication facility 430.
Obstacle detector 410 is configured as corresponding according to the test signal sent to highway and received test signal
Return signal, dyspoiesis analyte detection signal；
Obstacle detector 410 sends obstacle detection signal to control centre 420, which includes
The corresponding identification information of obstacle detector；
Control centre 420 is configured as being judged according to obstacle detection signal on the bad section of highway sighting distance with the presence or absence of barrier
Hinder object；
When, there are when barrier, control centre 410 is configured as being believed according to detection of obstacles on the bad section of highway sighting distance
Number identification information for including determines the section position where barrier；
The corresponding warning information publication facility 430 in section position where control centre 420 controls barrier exports early warning
Signal.
Optionally, obstacle detection signal further includes the information for indicating detection of obstacles distance, and detection of obstacles is apart from table
Show the distance between obstacle detector and barrier；
Control centre 420 is additionally configured to obtain detection of obstacles distance from obstacle detection signal, by obstacle quality testing
Ranging is compared from preset detection of obstacles distance threshold；
If detection of obstacles distance is less than preset detection of obstacles distance threshold, determine on the bad section of highway sighting distance
There are barriers；
If detection of obstacles distance is not less than preset detection of obstacles distance threshold, the bad section of highway sighting distance is determined
It is upper that barrier is not present.
Optionally, obstacle detection signal further includes the information for indicating detection of obstacles distance, and detection of obstacles is apart from table
Show the distance between obstacle detector and barrier；
Control centre 420 is additionally configured to obtain detection of obstacles distance from obstacle detection signal, by obstacle quality testing
Ranging is compared from preset detection of obstacles distance threshold；
If detection of obstacles distance is less than preset detection of obstacles distance threshold, control centre will be in preset time period
The interior detection of obstacles distance that obtains from obstacle detection signal is compared；
If detection of obstacles distance determines that there are barriers on the bad section of highway sighting distance there is no variation；
If detection of obstacles distance changes, determine that there is no barriers on the bad section of highway sighting distance.
Optionally, obstacle detection signal further includes the information for indicating the detection of obstacles time, detection of obstacles timetable
Show the time that the test signal that obstacle detector is sent is blocked；
Control centre 420 is additionally configured to obtain the detection of obstacles time from obstacle detection signal, by obstacle quality testing
The survey time is compared with preset detection of obstacles time threshold；
If the detection of obstacles time is less than preset detection of obstacles time threshold, determine on the bad section of highway sighting distance
There is no barriers；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, the bad section of highway sighting distance is determined
On there are barriers.
Optionally, control centre 420 is additionally configured to be previously stored with the identification information of obstacle detector and section
The corresponding relationship of position finds the corresponding section position of identification information according to identification information, as obstacle in corresponding relationship
Section position where object.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of bad section method for early warning of highway sighting distance, which is characterized in that the method includes：
Be mounted on the obstacle detector in the bad section of sighting distance according to the test signal that is sent to highway and it is received with it is described
Test the corresponding return signal of signal, dyspoiesis analyte detection signal；
The obstacle detector sends the obstacle detection signal to control centre, and the obstacle detection signal includes
The corresponding identification information of the obstacle detector；
The control centre judges that whether there are obstacles on the bad section of highway sighting distance according to the obstacle detection signal；
When, there are when the barrier, the control centre is according to the obstacle detection signal packet on the bad section of highway sighting distance
The identification information included determines the section position where the barrier；
The corresponding warning information publication facility output early warning in section position where the control centre controls the barrier is believed
Number.
2. the method according to claim 1, wherein the obstacle detection signal further includes instruction obstacle quality testing
Ranging from information, detection of obstacles distance indicates the distance between the obstacle detector and barrier；
The control centre judges that whether there are obstacles on the bad section of highway sighting distance according to the obstacle detection signal, packet
It includes：
The control centre obtains the detection of obstacles distance from the obstacle detection signal, by the detection of obstacles
Distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the bad road of highway sighting distance is determined
There are barriers in section；
If the detection of obstacles distance is not less than preset detection of obstacles distance threshold, determine that the highway sighting distance is bad
Barrier is not present on section.
3. the method according to claim 1, wherein the obstacle detection signal further includes instruction obstacle quality testing
Ranging from information, detection of obstacles distance indicates the distance between the obstacle detector and barrier；
The control centre judges that whether there are obstacles on the bad section of highway sighting distance according to the obstacle detection signal, packet
It includes：
The control centre obtains the detection of obstacles distance from the obstacle detection signal, by the detection of obstacles
Distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the control centre will be when default
Between obtain the detection of obstacles distance from the obstacle detection signal in section and be compared；
If the detection of obstacles distance determines that there are barriers on the bad section of highway sighting distance there is no variation；
If the detection of obstacles distance changes, determine that there is no barriers on the bad section of highway sighting distance.
4. the method according to claim 1, wherein the obstacle detection signal further includes instruction obstacle quality testing
Survey the information of time, the detection of obstacles time indicate that the test signal that the obstacle detector is sent is blocked when
Between；
The control centre judges that whether there are obstacles on the bad section of highway sighting distance according to the obstacle detection signal, packet
It includes：
The control centre obtains the detection of obstacles time from the obstacle detection signal, by the detection of obstacles
Time is compared with preset detection of obstacles time threshold；
If the detection of obstacles time is less than preset detection of obstacles time threshold, the bad road of highway sighting distance is determined
Barrier is not present in section；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, determine that the highway sighting distance is bad
There are barriers on section.
5. the method according to claim 1, wherein the control centre is according to the obstacle detection signal packet
The identification information included determines the section position where the barrier, including：
The control centre is previously stored with the identification information of obstacle detector and the corresponding relationship of section position, according to institute
It states identification information and finds the corresponding section position of the identification information in the corresponding relationship, as the road where barrier
Fragment position.
6. a kind of bad section early warning system of highway sighting distance, which is characterized in that the system comprises：Obstacle detector, control
Center processed and warning information issue facility；
The obstacle detector is configured as according to the test signal and the received and test signal sent to highway
Corresponding return signal, dyspoiesis analyte detection signal；
The obstacle detector sends obstacle detection signal to control centre, and the obstacle detection signal includes described
The corresponding identification information of obstacle detector；
The control centre is configured as being judged to whether there is on the bad section of highway sighting distance according to the obstacle detection signal
Barrier；
When, there are when the barrier, the control centre is configured as according to the obstacle quality testing on the bad section of highway sighting distance
The identification information that survey signal includes determines the section position where the barrier；
The corresponding warning information publication facility output early warning in section position where the control centre controls the barrier is believed
Number.
7. system according to claim 6, which is characterized in that the obstacle detection signal further includes instruction obstacle quality testing
Ranging from information, detection of obstacles distance indicates the distance between the obstacle detector and barrier；
The control centre is additionally configured to obtain the detection of obstacles distance from the obstacle detection signal, will be described
Detection of obstacles distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the bad road of highway sighting distance is determined
There are barriers in section；
If the detection of obstacles distance is not less than preset detection of obstacles distance threshold, determine that the highway sighting distance is bad
Barrier is not present on section.
8. system according to claim 6, which is characterized in that the obstacle detection signal further includes instruction obstacle quality testing
Ranging from information, detection of obstacles distance indicates the distance between the obstacle detector and barrier；
The control centre is additionally configured to obtain the detection of obstacles distance from the obstacle detection signal, will be described
Detection of obstacles distance is compared with preset detection of obstacles distance threshold；
If the detection of obstacles distance is less than preset detection of obstacles distance threshold, the control centre will be when default
Between obtain the detection of obstacles distance from the obstacle detection signal in section and be compared；
If the detection of obstacles distance determines that there are barriers on the bad section of highway sighting distance there is no variation；
If the detection of obstacles distance changes, determine that there is no barriers on the bad section of highway sighting distance.
9. system according to claim 6, which is characterized in that the obstacle detection signal further includes instruction obstacle quality testing
Survey the information of time, the detection of obstacles time indicate that the test signal that the obstacle detector is sent is blocked when
Between；
The control centre is additionally configured to obtain the detection of obstacles time from the obstacle detection signal, will be described
The detection of obstacles time is compared with preset detection of obstacles time threshold；
If the detection of obstacles time is less than preset detection of obstacles time threshold, the bad road of highway sighting distance is determined
Barrier is not present in section；
If the detection of obstacles time is not less than preset detection of obstacles time threshold, determine that the highway sighting distance is bad
There are barriers on section.
10. system according to claim 6, which is characterized in that the control centre is additionally configured to be previously stored with barrier
Hinder the identification information of analyte detection device and the corresponding relationship of section position, is looked into the corresponding relationship according to the identification information
The corresponding section position of the identification information is found, as the section position where barrier.
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