CN104848924B - Bridge load-carrying monitoring method, apparatus and system - Google Patents
Bridge load-carrying monitoring method, apparatus and system Download PDFInfo
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- CN104848924B CN104848924B CN201410800423.1A CN201410800423A CN104848924B CN 104848924 B CN104848924 B CN 104848924B CN 201410800423 A CN201410800423 A CN 201410800423A CN 104848924 B CN104848924 B CN 104848924B
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Abstract
The invention discloses a kind of bridge load-carrying monitoring method, apparatus and system, it is related to bridge monitoring technical field, methods described includes：S1：The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and the characteristic information of lower bridge end vehicle are obtained in real time；S2：The lower bridge end vehicle is matched with upper bridge end vehicle according to characteristic information；S3：The car weight summation for the upper bridge end vehicle that the match is successful is obtained, car weight summation is regard as bridge load-carrying.The present invention is by obtaining the car weight of upper bridge end vehicle and the characteristic information of characteristic information and lower bridge end vehicle, lower bridge end vehicle is matched with upper bridge end vehicle, using the car weight summation of the upper bridge end vehicle that the match is successful as the bridge to be monitored bridge load-carrying, easily realize the monitoring to bridge load-carrying, realization only needs to set several relatively simple equipment, realize simple, it is with low cost, and using closely collection apparatus, so that the precision of matching is high, so as to ensure that the monitoring accuracy of bridge load-carrying.
Description
Technical field
The present invention relates to bridge monitoring technical field, more particularly to a kind of bridge load-carrying monitoring method, apparatus and system.
Background technology
With transportation business flourish, highway communication flow be on the increase and loading capacity continuous increasing
Greatly, the bearing capacity and reliability of existing highway bridge structure are faced with acid test, and for vehicular load, it is mainly by car
The multiple parameters such as weight, axle weight, wheelbase and following distance affect the effect resulted from bridge structure；And for bridge structure, by
In load and the inherent correlation of drag, its bearing capacity need to meet point of the configuration, loading capacity, loading capacity of vehicle on each axle
Match somebody with somebody, position of the vehicle on bridge and the requirement in terms of span of bridge.Vehicle is crowded to be blocked, between vehicle is front and rear on many bridges
Away from only 3.0~5.0m, cause bridge damage to aggravate, form vicious circle, the safety of vehicle and pedestrian are on the hazard.It is even more serious
, the bridge collapse accident thus triggered makes us startling.
For small across footpath bridge, due to the reason that vehicle spacing can not possibly infinitely shorten, bridge peak load effect is general
Controlled by bicycle car weight or one bicycle axle carries control, carrying the upper limit using the control bicycle car weight upper limit or one bicycle axle more at present realizes bridge
Safety monitoring, but bridge safety supervision can not be carried out to Medium Span and Large Span Bridges.
For Medium Span and Large Span Bridges, the peak load effect of bridge structure is often in the case of vehicle congestion
Produce, it is primarily due to vehicle under congestion status, caused by vehicle spacing is small, driving vehicle is more on bridge；Pass
The method of system is to use sensor and the communication technology, in time or regularly gathers the running parameter of bridge, by computer according to
The design parameter combination bridge health monitoring index of bridge is identified, processes and analyzed to the parameter of collection, provides bridge
Load assignment, foundation and guidance are provided for bridge inspection and maintenance, maintenance and administrative decision.Because there is Longspan Bridge structure type to answer
The features such as miscellaneous, span is big, local environment is severe, many drawbacks are carried out to bridge vehicle dynamic loads distribution detection band, such as required biography
Sensor quantity is more, cost is higher, and interference signal is easily impacted to sensor, and wiring is easily chaotic, and arrangement and maintenance are set
Standby workload is larger, and real-time is poor etc..
Also there is the splicing using panoramic camera in the prior art to the detection method of Longspan Bridge, the detection
Method is by the vehicle on the whole bridge floor of detect and track, so as to realize the tracking and matching of vehicle and weight.But the detection method
Video is only relied on as identification factor, matching factor is single, excessively relies on video recognition system, poor at night or light environment
There is tracking failure in Shi Rongyi, while the detection method needs to install substantial amounts of panoramic camera on bridge, data processing is difficult
Degree is big, and cost is higher.
The content of the invention
In view of the above problems, the present invention provide it is a kind of overcome above mentioned problem or solve the above problems at least in part one
Plant bridge load-carrying monitoring method, apparatus and system.
According to one aspect of the present invention there is provided a kind of bridge load-carrying monitoring method, methods described includes：
S1：The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and the feature letter of lower bridge end vehicle are obtained in real time
Breath；
S2：The lower bridge end vehicle is matched with the upper bridge end vehicle according to the characteristic information；
S3：The car weight summation for the upper bridge end vehicle that the match is successful is obtained, and the car weight summation is waited to supervise as described
Survey the bridge load-carrying of bridge.
Wherein, step S2 is specifically included：
S201：Calculate the feature between the characteristic information of the lower bridge end vehicle and the characteristic information of current upper bridge end vehicle
Deviation, the characteristic information includes：In axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three-D profile at least
One；
S202：Similarity evaluation index is calculated according to the feature deviation；
S203：The similarity evaluation index and similarity evaluation threshold value are compared, if being less than, matching is regarded as
Success, and performs step S3, and it is unsuccessful otherwise to regard as matching, and performs step S204；
S204：Bridge end vehicle, and return to step S201 are currently gone up using the upper bridge end vehicle not being selected as new, directly
It was selected to all upper bridge end vehicles.
Wherein, after step S3, in addition to：
S4：Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is in the dangerous load
In the range of lotus, then warning information is exported；
Between step S3 and step S4, in addition to：
The average time of the match is successful vehicle in preset time is counted, if existence time and the institute of the upper bridge end vehicle
State the ratio that average time obtains and exceeded preset value, then remove the weight of bridge end vehicle on this from the bridge load-carrying；
Or,
In step S4, before output warning information, in addition to：
The average time of the match is successful vehicle in preset time is counted, if existence time and the institute of the upper bridge end vehicle
State the difference that average time obtains and exceeded preset value, then remove the weight of bridge end vehicle on this from the bridge load-carrying；
Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is still in the Dangerous Load
In the range of, then perform output warning information.
Wherein, step S1 is specifically included：
The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and car weight and the spy of lower bridge end vehicle are obtained in real time
Reference ceases；
Correspondingly, step S2 is specifically included：
Using the car weight and characteristic information as new characteristic information, according to the new characteristic information to the lower bridge end
Vehicle is matched with the upper bridge end vehicle.
According to another aspect of the present invention there is provided a kind of bridge load-carrying monitoring device, described device includes：
Data obtaining module, for the car weight and characteristic information and lower bridge of the upper bridge end vehicle for obtaining bridge to be monitored in real time
Hold the characteristic information of vehicle；
Information matches module, for being carried out the lower bridge end vehicle and the upper bridge end vehicle according to the characteristic information
Matching；
Load-carrying computing module, the car weight summation for obtaining the upper bridge end vehicle that the match is successful, and the car weight is total
With the bridge load-carrying as the bridge to be monitored.
Wherein, described information matching module is specifically included：
Deviation calculating sub module, for calculating the characteristic information of the lower bridge end vehicle and the feature of current upper bridge end vehicle
Feature deviation between information, the characteristic information includes：Axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three
Tie up at least one in profile；
Index calculating sub module, for calculating similarity evaluation index according to the feature deviation；
Threshold value comparison sub-module, for the similarity evaluation index and similarity evaluation threshold value to be compared, if small
In then regarding as that the match is successful, otherwise regard as matching unsuccessful；
Vehicle selects submodule, for currently going up bridge end vehicle using the upper bridge end vehicle not being selected as new, directly
It was selected to all upper bridge end vehicles.
Wherein, described device also includes：
Danger early warning module, for judging whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying
In the range of the Dangerous Load, then warning information is exported；
Described device also includes：
Module is removed in load-carrying, for the average time for the vehicle that counts in preset time that the match is successful, if the upper bridge end
The ratio that the existence time of vehicle and the average time obtain has exceeded preset value, then by the weight of bridge end vehicle on this from institute
State in bridge load-carrying and remove；
Or,
The danger early warning module, is additionally operable to count the average time of the match is successful vehicle in preset time, if described
The ratio that the existence time of upper bridge end vehicle is obtained with the average time has exceeded preset value, then by the weight of bridge end vehicle on this
Amount is removed from the bridge load-carrying；Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is still
In the range of the Dangerous Load, then output warning information is performed.
Wherein, described information acquisition module, is additionally operable to obtain car weight and the spy of the upper bridge end vehicle of bridge to be monitored in real time
The car weight and characteristic information of reference breath and lower bridge end vehicle；
Correspondingly, described information matching module, is additionally operable to regard the car weight and characteristic information as new characteristic information, root
The lower bridge end vehicle is matched with the upper bridge end vehicle according to the new characteristic information.
According to another aspect of the present invention there is provided a kind of bridge load monitoring system, the system includes：Located at waiting to supervise
Survey the first dynamic weighing platform, the first Car license recognition camera and first wagon detector at the upper bridge end of bridge, treated located at described
Detect the second Car license recognition camera and the second wagon detector and described device at the lower bridge end of bridge, first dynamic
Weighing platform, the first Car license recognition camera, the first wagon detector, the second Car license recognition camera and the second wagon detector with
Described device is connected.
Wherein, the system also includes：The second dynamic weighing platform located at the lower bridge end of the bridge to be detected, it is described
Second dynamic weighing platform is connected with described device；
And/or,
The system also includes：Alarm unit, the alarm unit is connected with described device.
The present invention is by obtaining the car weight of upper bridge end vehicle and the characteristic information of characteristic information and lower bridge end vehicle, Jiang Xiaqiao
End vehicle is matched with upper bridge end vehicle, regard the car weight summation for the upper bridge end vehicle that the match is successful as the bridge to be monitored
The bridge load-carrying of beam, easily realizes the monitoring to bridge load-carrying, realization only needs to set several relatively simple equipment, real
It is now simple, it is with low cost, and using closely collection apparatus so that the precision of matching is high, so as to ensure that bridge load-carrying
Monitoring accuracy.
Brief description of the drawings
Fig. 1 is the flow chart of the bridge load-carrying monitoring method of one embodiment of the present invention；
Fig. 2 is the structured flowchart of the bridge load-carrying monitoring device of one embodiment of the present invention；
Fig. 3 is the structured flowchart of the bridge load monitoring system of one embodiment of the present invention；
Fig. 4 is the side view of the wagon detector in Fig. 3；
Fig. 5 is the front view of the wagon detector in Fig. 3；
Fig. 6 is the schematic diagram of the dynamic weighing platform in Fig. 3；
Fig. 7 is the structural representation of the alarm unit in Fig. 3；
Fig. 8 is the structured flowchart of the bridge load monitoring system of another embodiment of the present invention.
Embodiment
With reference to the accompanying drawings and examples, the embodiment to the present invention is described in further detail.Implement below
Example is used to illustrate the present invention, but is not limited to the scope of the present invention.
Fig. 1 is the flow chart of the bridge load-carrying monitoring method of one embodiment of the present invention；Reference picture 1, methods described bag
Include：
S1：The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and the feature letter of lower bridge end vehicle are obtained in real time
Breath；
S2：The lower bridge end vehicle is matched with the upper bridge end vehicle according to the characteristic information；
S3：The car weight summation for the upper bridge end vehicle that the match is successful is obtained, and the car weight summation is waited to supervise as described
Survey the bridge load-carrying of bridge.
It should be noted that in this step, first upper bridge end car weight summation can be added up, then by the upper bridge that the match is successful
The car weight of end vehicle is removed from accumulated value, so as to improve step S3 computational efficiency.
To ensure the accuracy rate of matching, it is preferable that step S2 is specifically included：
S201：Calculate the feature between the characteristic information of the lower bridge end vehicle and the characteristic information of current upper bridge end vehicle
Deviation, the characteristic information includes：In axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three-D profile at least
One；
S202：Similarity evaluation index is calculated according to the feature deviation；
S203：The similarity evaluation index is compared with similarity evaluation threshold value η, if being less than, regarded as
With success, and step S3 is performed, it is unsuccessful otherwise to regard as matching, and performs step S204；
S204：Bridge end vehicle, and return to step S201 are currently gone up using the upper bridge end vehicle not being selected as new, directly
It was selected to all upper bridge end vehicles.
It should be noted that when carrying out vehicle match in practice process, it is possible that the problem of matching delay, therefore
And " all upper bridge end vehicles " in step S204 refer to the lower bridge end vehicle be acquired at the time of corresponding upper bridge end
Vehicle, for ease of illustration the problem, can be exemplified below, it is assumed that 11 o'clock sharp at noon, upper bridge end obtain 100 cars car weight and
Characteristic information, lower bridge end obtains the characteristic information of 1 car, now can be by the car at lower bridge end and 100 cars at upper bridge end
Matched, but due to matching process time course, may now at 11 points at noon has crossed 5 minutes ability the match is successful 80, and on
10 cars have been gone up in bridge end again in this 5 minutes, and this 10 cars will not be brought to being matched in the matching process, i.e., " described to have
Upper bridge end vehicle " only is included in this 100 cars obtained during 11 o'clock sharp of noon.
By taking n=5 as an example, present embodiment calculates the process of similarity evaluation index using characteristic information, specifically includes：
A1：Obtain the feature set U={ x of characteristic information1,x2,x3,x4,x5}.Wherein, x1Deviation, x are matched for car plate2For car
Long deviation, x3For overall width deviation, x4For overall height deviation, x5For vehicle three-dimensional outline information.Set up corresponding weight factor K=
{k1,k2,k3,k4,k5, cluster centre factor Ψ={ φ1,φ2,φ3,φ4,φ5, variance of unit weight Σ={ σ1,σ2,σ3,σ4,
σ5}。
A2：Using similarity evaluation index decision factor collection U matching degree, the calculation formula of similarity evaluation index is：
Wherein, μ (xi) it is membership function,
The process for carrying out self study to parameter in similarity evaluation index is as follows：
B1：The characteristic information of features described above concentration predetermined number is chosen as principal dimensions, is built by the principal dimensions
Initial membership function is found, the predetermined number is the integer not less than 1 and less than n, and such as predetermined number takes 3, corresponding
Characteristic information be respectively pth, m, q, and set weight factor kiInitial value be：When i=p, m, q, ki=1, when i is it
When he is worth, ki=0.5, initial membership function is as follows：
With K-means algorithms using 0 as cluster centre, similarity evaluation index is obtained：
V0=ΣI=p, m, qki*[μ0(xi)-0]2
Work as V0When=0, then it is assumed that the match is successful, and by the sample real-time update that the match is successful into sample set A.Work as sample
(ξ is preset value, for example, take ξ=10000), and it is newest ξ bar samples to update sample set A, together when the number of samples for collecting A is more than ξ
When enter step B2.It should be noted that in this step, in order to ensure the accuracy rate of Parameter Self-learning, main dimension can be selected preferentially
Select：Car plate matches at least one in deviation, car weight deviation and axle weight.
B2：The membership function μ of remaining several secondary dimension is trained according to the sample set A of real-time update1(xi), cluster in
Heart φiAnd similarity threshold η1,
According to kiRegulation rule adjustment ki, the kiRegulation rule be：As D (μ1(xi))>During β, k is takeni=0；Work as α<D
(μ1(xi))<During β,If ki<When 0, k is takeni=0；As D (μ1(xi))<During α,
kiIteration value maximum be no more than 1.5 times of initial value.
Work as μ1(xi) meet stable condition D (μ1(xi)) ＜ β when, obtain similarity evaluation index
Wherein, φi=E [μ0(xi)], i ≠ p, m, q, η1=E (V1) * m, wherein m is can set coefficient, and D (*) is that variance calculates symbol, E
(*) accords with for mean value calculation.
When the secondary dimension number for meeting stable condition is more than a certain preset value η, B3 is performed, otherwise, with sample set A
Real-time update until meet require.
B3, utilizes similarity evaluation index V1, V2The newest sample of Real-Time Evaluation, works as V1＜ η1And V2When=0, the match is successful,
Real-time update is into sample set B.
Wherein,
When B number of samples is more thanWhen (It is preset value, for example, takes), it is newest to update sample set B
Bar sample, while into step B4.
B4, in the sample set B of real-time update, trains the membership function μ (x of above-mentioned 3 principal dimensionsi), in cluster
Heart φiAnd similarity threshold η.
According to kiRegulation rule adjustment ki, the kiRegulation rule be：As D (μ1(xi))>During β, k is takeni=0；Work as α<
D(μ1(xi))<During β,If ki<When 0, k is takeni=0；As D (μ1(xi))<During α,
kiIteration value maximum be no more than 1.5 times of initial value.
When each principal dimensions meets condition D (μ (xi)) ＜ β when, export stable similarity evaluation index
Wherein,
φi=E [μ1(xi)]
η=E (V) * m, wherein m are that can set coefficient.
Otherwise, required with sample set A real-time update until meeting.
Calculated in real time it should be noted that above-mentioned B1~B4 Parameter Self-learning process is accompanied by newest car data of crossing
Real-time update.The adaptivity of Performance Evaluating Indexes parameter is so ensured that, the stability of system operation is improved.
To carry out danger early warning to the bridge load-carrying, it is preferable that after step S3, in addition to：
S4：Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is in the dangerous load
In the range of lotus, then warning information is exported；
Because matching there may be error, some vehicles have record at upper bridge end, but under reality bridge bridge end is not at present
With success, cause the weight of these vehicles to calculate always in bridge load-carrying, the precision of the bridge load-carrying is influenceed, to avoid this
Problem to remove the weight of these vehicles, can use two kinds of sides, it is necessary to the weight of these vehicles is removed from the bridge load-carrying
Formula triggering is removed, and first way is：Once removed every predetermined period, detailed process is as follows：
Between step S3 and step S4, in addition to：
The average time of the match is successful vehicle in preset time is counted, if existence time and the institute of the upper bridge end vehicle
State the ratio that average time obtains and exceeded preset value, then remove the weight of bridge end vehicle on this from the bridge load-carrying；
The second way is：When bridge load-carrying is in the range of Dangerous Load, then it is purged, detailed process is as follows：
In step S4, before output warning information, in addition to：
The average time of the match is successful vehicle in preset time is counted, if existence time and the institute of the upper bridge end vehicle
State the ratio that average time obtains and exceeded preset value, then remove the weight of bridge end vehicle on this from the bridge load-carrying；
Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is still in the Dangerous Load
In the range of, then perform output warning information.
In order to calculate bridge load-carrying, so having to obtain the car weight of bridge end vehicle, when carrying out vehicle match, it can adopt
With characteristic information, and car weight in fact can also can be regarded as one kind of characteristic information, so in measurement process, except using above-mentioned spy
Reference breath is outer, also car weight can also can be regarded as to characteristic information and be matched, it is preferable that step S1 is specifically included：
The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and car weight and the spy of lower bridge end vehicle are obtained in real time
Reference ceases；
Correspondingly, step S2 is specifically included：
Using the car weight and characteristic information as new characteristic information, according to the new characteristic information to the lower bridge end
Vehicle is matched with the upper bridge end vehicle.
The mistake that similarity evaluation index is calculated using new characteristic information is disclosed by taking n=8 as an example, in present embodiment
Journey, is specifically included：
A1’：Obtain the feature set U={ x of new characteristic information1,x2,x3,x4,x5,x6,x7,x8, set up for feature set
Weight factor matrix K={ k1,k2,k3,k4,k5,k6,k7,k8}.Wherein, x1For car plate matching deviation (matching rate), x2For car weight
Deviation (ratio value), x3For number of axle deviation (difference), x4For each axle weight deviation average (ratio value), x5For vehicle commander's deviation (ratio
Value), x6For overall width deviation (ratio value), x7For overall height deviation (ratio value), x8The time difference is passed a bridge with averagely passing a bridge the time for vehicle
Deviation (ratio value).Set up corresponding weight factor K={ k1,k2,k3,k4,k5,k6,k7,k8, cluster centre factor Ψ=
{φ1,φ2,φ3,φ4,φ5,φ6,φ7,φ8, variance of unit weight Σ={ σ1,σ2,σ3,σ4,σ5,σ6,σ7,σ8}。
A2’：Using similarity evaluation index decision factor collection U matching degree, similarity evaluation index is V：
Wherein,
The invention also discloses a kind of bridge load-carrying monitoring device, reference picture 2, described device includes：
Data obtaining module, for the car weight and characteristic information and lower bridge of the upper bridge end vehicle for obtaining bridge to be monitored in real time
Hold the characteristic information of vehicle；
Information matches module, for being carried out the lower bridge end vehicle and the upper bridge end vehicle according to the characteristic information
Matching；
Load-carrying computing module, the car weight summation for obtaining the upper bridge end vehicle that the match is successful, and the car weight is total
With the bridge load-carrying as the bridge to be monitored.
Preferably, described information matching module is specifically included：
Deviation calculating sub module, for calculating the characteristic information of the lower bridge end vehicle and the feature of current upper bridge end vehicle
Feature deviation between information, the characteristic information includes：Axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three
Tie up at least one in profile；
Index calculating sub module, for calculating similarity evaluation index according to the feature deviation；
Threshold value comparison sub-module, for the similarity evaluation index and similarity evaluation threshold value to be compared, if small
In then regarding as that the match is successful, otherwise regard as matching unsuccessful；
Vehicle selects submodule, for currently going up bridge end vehicle using the upper bridge end vehicle not being selected as new, directly
It was selected to all upper bridge end vehicles.
Preferably, described device also includes：
Danger early warning module, for judging whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying
In the range of the Dangerous Load, then warning information is exported；
Described device also includes：
Module is removed in load-carrying, for the average time for the vehicle that counts in preset time that the match is successful, if the upper bridge end
The ratio that the existence time of vehicle and the average time obtain has exceeded preset value, then by the weight of bridge end vehicle on this from institute
State in bridge load-carrying and remove；
Or,
The danger early warning module, is additionally operable to count the average time of the match is successful vehicle in preset time, if described
The ratio that the existence time of upper bridge end vehicle is obtained with the average time has exceeded preset value, then by the weight of bridge end vehicle on this
Amount is removed from the bridge load-carrying；Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is still
In the range of the Dangerous Load, then output warning information is performed.
Preferably, described information acquisition module, be additionally operable to obtain in real time the upper bridge end vehicle of bridge to be monitored car weight and
The car weight and characteristic information of characteristic information and lower bridge end vehicle；
Correspondingly, described information matching module, is additionally operable to regard the car weight and characteristic information as new characteristic information, root
The lower bridge end vehicle is matched with the upper bridge end vehicle according to the new characteristic information.
The invention also discloses a kind of bridge load monitoring system, present embodiment is to be respectively arranged in bridge end on bridge
Come exemplified by dynamic weighing platform, Car license recognition camera, wagon detector and the Car license recognition camera at lower bridge end, wagon detector
Illustrate the present invention, but do not limit protection scope of the present invention.Specific structure refer to Fig. 3, and the system includes：Located at waiting to supervise
Survey the first dynamic weighing platform 102, the first Car license recognition camera 103 and first wagon detector 101 at the upper bridge end of bridge, set
The second Car license recognition camera 105 and the second wagon detector 104 and described device in the lower bridge end of the bridge to be detected
107, the first dynamic weighing platform 102, the first Car license recognition camera 103, the first wagon detector 101, the second car plate are known
The other wagon detector 104 of camera 105 and second is connected with described device 107.
First wagon detector 101 is located at the surface of the first dynamic weighing platform 102, the first Car license recognition camera
103 are located at the rear of the first dynamic weighing platform 102.
As shown in Figures 4 and 5, in the present embodiment the first wagon detector 101 and the second wagon detector 104 by two
The laser sensor 201,202 placed by certain angle is constituted, and wherein laser sensor 202 is arranged for vertical road surface, laser
It is appropriate that the installation site and angle of sensor 201,202 can be carried out by the sweep time of laser sensor and uplink time delay
Calculate.Laser sensor 201,202 every 20ms carry out 180 ° of profile scanning rangings, can to the barrier in section with
The distance of laser is measured.
When vehicle 203 drives into the scanning area of wagon detector, i.e. the scanning section into laser sensor 201 swashs
Optical scanning to obstacle distance be less than after threshold value and judge that vehicle drives into scanning area, record entered for 201 times for scanning sections
T1, control Car license recognition camera is captured, while being converted to the wide high data of vehicle according to the polar coordinates of 180 ° of profile scannings；
When vehicle continues to proceed to the scanning section of laser 202, record enters the time t2 of 202 scanning sections, while disconnected according to 180 °
The polar coordinates of Surface scan are converted to the wide high data of vehicle；According to the height h of vehicle 203, and laser height H, two are swashed
The angle α of light, distance, delta L=(H-h) the * cot α passed through when calculating vehicle by two sections, then running velocity v=
ΔL/(t2-t1)；Registration of vehicle rolls the time t3 of 201 scanning sections, Vehicle length L=v* (t3-t1) away from, then the length of vehicle,
Wide, high and three-D profile data can be obtained.
In the present embodiment, dynamic weighing platform as shown in fig. 6, including weighing sensor 301, wagon detector and
Weighing data processor 303；Weighing sensor 301 is layed on the road surface after wagon detector laser scanning section 302, and is led to
Cross wire being signally attached to weighing sensor 301 in weighing data processing equipment 303.When vehicle enters wagon detector
Section 302 is scanned, the information and vehicle position information that wagon detector enters vehicle are sent to weighing data processing equipment
303, drive on weighing sensor 301 and weighed with rear vehicle, the weighing-up wave of weighing sensor 301 is uploaded by wire
To weighing data processing equipment 303, processing equipment of weighing 303 obtains axle weight, the number of axle, wheelbase, speed of vehicle etc. by calculating
Etc. data.
Preferably, the spacing between the wagon detector and the dynamic weighing platform is 0.5m~2m；The vehicle
Spacing between detector and Car license recognition camera is 15m~25m.
For ease of carrying out early warning, the system also includes：Alarm unit 106, the alarm unit 106 and the dress
107 connections, alarm unit are put as shown in fig. 7, the warning data that alarm unit reception described device is sent pass through short message sending mould
Block 502 or warning lamp 501 notify law enfrocement official, and the limitation vehicle that takes measures in time continues upper bridge.
To obtain the car weight at lower bridge end, reference picture 8, it is preferable that the system also includes：Located at the bridge to be detected
The second dynamic weighing platform 108 at lower bridge end, the second dynamic weighing platform 108 is connected with described device 107.
Embodiment of above is merely to illustrate the present invention, and not limitation of the present invention, about the common of technical field
Technical staff, without departing from the spirit and scope of the present invention, can also make a variety of changes and modification, therefore all
Equivalent technical scheme falls within scope of the invention, and scope of patent protection of the invention should be defined by the claims.
Claims (8)
1. a kind of bridge load-carrying monitoring method, it is characterised in that methods described includes：
S1：The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and the characteristic information of lower bridge end vehicle are obtained in real time；
S2：The lower bridge end vehicle is matched with the upper bridge end vehicle according to the characteristic information；
S3：The car weight summation for the upper bridge end vehicle that the match is successful is obtained, and regard the car weight summation as the bridge to be monitored
The bridge load-carrying of beam；Step S2 is specifically included：
S201：The feature calculated between the characteristic information of the lower bridge end vehicle and the characteristic information of current upper bridge end vehicle is inclined
Difference, the characteristic information includes：At least one in axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three-D profile
；
S202：Similarity evaluation index is calculated according to the feature deviation；
S203：The similarity evaluation index and similarity evaluation threshold value are compared, if being less than, regard as matching into
Work(, and perform step S3, it is unsuccessful otherwise to regard as matching, and performs step S204；
S204：Successful upper bridge end vehicle will not be matched as new currently above bridge end vehicle, and return to step S201, until
All upper bridge end vehicles were selected.
2. the method as described in claim 1, it is characterised in that after step S3, in addition to：
S4：Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is in the Dangerous Load model
In enclosing, then warning information is exported；
Between step S3 and step S4, in addition to：
Count the average time of the match is successful vehicle in preset time, if the existence time of the upper bridge end vehicle with it is described flat
The ratio that the equal time obtains has exceeded preset value, then removes the weight of bridge end vehicle on this from the bridge load-carrying；
Or,
In step S4, before output warning information, in addition to：
Count the average time of the match is successful vehicle in preset time, if the existence time of the upper bridge end vehicle with it is described flat
The ratio that the equal time obtains has exceeded preset value, then removes the weight of bridge end vehicle on this from the bridge load-carrying；
Judge whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is still in the Dangerous Load scope
It is interior, then perform output warning information.
3. such as method according to any one of claims 1 to 2, it is characterised in that step S1 is specifically included：
The car weight and characteristic information of the upper bridge end vehicle of bridge to be monitored and car weight and the feature letter of lower bridge end vehicle are obtained in real time
Breath；
Correspondingly, step S2 is specifically included：
Using the car weight and characteristic information as new characteristic information, according to the new characteristic information to the lower bridge end vehicle
Matched with the upper bridge end vehicle.
4. a kind of bridge load-carrying monitoring device, it is characterised in that described device includes：
Data obtaining module, for the car weight and characteristic information and lower bridge end car of the upper bridge end vehicle for obtaining bridge to be monitored in real time
Characteristic information；
Information matches module, for being carried out the lower bridge end vehicle and the upper bridge end vehicle according to the characteristic information
Match somebody with somebody；
Load-carrying computing module, the car weight summation for obtaining the upper bridge end vehicle that the match is successful, and the car weight summation is made
For the bridge load-carrying of the bridge to be monitored；Described information matching module is specifically included：
Deviation calculating sub module, for calculating the characteristic information of the lower bridge end vehicle and the characteristic information of current upper bridge end vehicle
Between feature deviation, the characteristic information includes：Axle weight, axle group weight, the number of axle, car plate, vehicle commander, overall height, overall width and three-dimensional wheel
At least one of in exterior feature；
Index calculating sub module, for calculating similarity evaluation index according to the feature deviation；
Threshold value comparison sub-module, for the similarity evaluation index and similarity evaluation threshold value to be compared, if being less than,
Regard as that the match is successful, otherwise regard as matching unsuccessful；
Vehicle selects submodule, for currently going up bridge end vehicle using the upper bridge end vehicle not being selected as new, until institute
There is upper bridge end vehicle to be selected.
5. device as claimed in claim 4, it is characterised in that described device also includes：
Danger early warning module, for judging whether the bridge load-carrying is in Dangerous Load scope, if the bridge load-carrying is in
In the range of the Dangerous Load, then warning information is exported；
Described device also includes：
Module is removed in load-carrying, for the average time for the vehicle that counts in preset time that the match is successful, if the upper bridge end vehicle
Existence time and the average time obtained ratio exceeded preset value, then by the weight of bridge end vehicle on this from the bridge
Removed in beam load-carrying；
Or,
The danger early warning module, is additionally operable to count the average time of the match is successful vehicle in preset time, if the upper bridge
Hold the ratio that existence time and the average time of vehicle obtain to exceed preset value, then by the weight of bridge end vehicle on this from
Removed in the bridge load-carrying；Judge the bridge load-carrying whether be in Dangerous Load scope, if the bridge load-carrying still in
In the range of the Dangerous Load, then output warning information is performed.
6. the device as described in claim 4 or 5, it is characterised in that described information acquisition module, is additionally operable to obtain in real time and waits to supervise
Survey the car weight and the car weight and characteristic information of characteristic information and lower bridge end vehicle of the upper bridge end vehicle of bridge；
Correspondingly, described information matching module, is additionally operable to the car weight and characteristic information as new characteristic information, according to institute
New characteristic information is stated to match the lower bridge end vehicle with the upper bridge end vehicle.
7. a kind of bridge load monitoring system, it is characterised in that the system includes：Located at the upper bridge end of bridge to be monitored
One dynamic weighing platform, the first Car license recognition camera and the first wagon detector, located at the lower bridge end of the bridge to be monitored
Device any one of second Car license recognition camera and the second wagon detector and claim 4~6, described first moves
State weighing platform, the first Car license recognition camera, the first wagon detector, the second Car license recognition camera and the second wagon detector are equal
It is connected with described device.
8. system as claimed in claim 7, it is characterised in that the system also includes：Under the bridge to be monitored
The second dynamic weighing platform at bridge end, the second dynamic weighing platform is connected with described device；
And/or,
The system also includes：Alarm unit, the alarm unit is connected with described device.
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| CN201410800423.1A CN104848924B (en) | 2014-12-18 | 2014-12-18 | Bridge load-carrying monitoring method, apparatus and system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109118776A (en) * | 2018-10-10 | 2019-01-01 | 中交基础设施养护集团有限公司 | A method of vehicular load spatial distribution is identified based on bridge monitoring data |
| CN109556847B (en) * | 2018-12-17 | 2020-10-16 | 交通运输部公路科学研究所 | Novel damage monitoring system for simply supported beam bridge structure |
| CN111540216B (en) * | 2020-05-25 | 2022-04-22 | 厦门理工学院 | Urban bridge overload early warning system and method |
| CN111860201B (en) * | 2020-06-28 | 2023-07-25 | 中铁大桥科学研究院有限公司 | Ramp heavy vehicle identification method and system combining image identification and bridge monitoring |
| CN112906647B (en) * | 2021-03-24 | 2023-12-19 | 杭州鲁尔物联科技有限公司 | Method and device for monitoring load of small-span bridge, computer equipment and storage medium |
| CN114964446B (en) * | 2022-04-22 | 2024-03-12 | 中交公规土木大数据信息技术（北京）有限公司 | Highway bridge dynamic traffic load monitoring and early warning method, device, equipment and medium |
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