CN106500810A - A kind of target vehicle Weighing method and system - Google Patents
A kind of target vehicle Weighing method and system Download PDFInfo
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- CN106500810A CN106500810A CN201611025202.7A CN201611025202A CN106500810A CN 106500810 A CN106500810 A CN 106500810A CN 201611025202 A CN201611025202 A CN 201611025202A CN 106500810 A CN106500810 A CN 106500810A
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- strain
- strain transducer
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- wheel
- weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/02—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles
- G01G19/03—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion
- G01G19/035—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for weighing wheeled or rolling bodies, e.g. vehicles for weighing during motion using electrical weight-sensitive devices
Abstract
The embodiment of the invention discloses a kind of target vehicle Weighing method and system.The method includes：When weight scale body of the target vehicle on track, the strain data for being arranged on multiple strain transducers collections in weight scale body is obtained；According to strain data and sensor position data, obtain wheel and roll position data；Position data and sensor position data are rolled according to wheel, the relative distance data that each strain transducer and wheel roll position are obtained；According to relative distance data and default gain function of weighing, the gain of weighing of each strain transducer is obtained；According to the gain of weighing of each strain transducer, and the strain data of each strain transducer collection, obtain the average weight of wheel；According to the weight that the average weight of wheel obtains target vehicle.Strain data of the embodiment of the present invention based on weight scale body calculates the weight for obtaining target vehicle, compared with prior art, with while weighing precision is improved, reduces the advantage of resource loss.
Description
Technical field
The present embodiments relate to Vehicle weigh-in-motion technology field, and in particular to a kind of target vehicle Weighing method and be
System.
Background technology
At present, domestic road vehicle dynamic weighing product is broadly divided into two classes：One class is with complete-vehicle-type and axle group formula etc.
The scale body of embedding sensor is that the conventional low of representative is weighed product；Another kind of claimed with integral types such as fillet, quartz and piezoelectric films
Retransmit the high-speed weighing product that sensor is representative.
Conventional low weighs product usually by multiple independent sensors one wider weighing table of common support, permits
Perhaps vehicle bearing or axle group even car load travels the weighing area on weighing table.Although dynamic weighing precision is higher,
Its volume is larger, and the consumable quantity and installation amount very big and cycle is longer, while having relatively costly, stability is poor, need through
The shortcomings of often safeguarding.
And high-speed weighing product typically adopts integrated weighing sensor, i.e. scale body inherently LOAD CELLS, size
Less many in strip, and frequently with many modes for combining layout with strip sensor in practice.Therefore, its relative construction
Amount is less and construction period is shorter, road is damaged little, it is not necessary to often safeguard, but weighing precision is not relatively high, and to peace
Dress and the requirement that safeguards are higher.
Content of the invention
One purpose of the embodiment of the present invention is to solve prior art to be difficult to while meeting raising weighing precision and reducing money
The problem that source loss is required.
The embodiment of the present invention proposes a kind of target vehicle Weighing method, including：
When weight scale body of the target vehicle on track, obtain and be arranged in weight scale body and target vehicle row
Sail the strain data of the multiple strain transducer collections being spaced apart on the perpendicular direction in direction；
According to the strain data of each strain transducer collection, and the position data of each strain transducer, obtain wheel and grind
Pressure position data；
Position data, and the position data of each strain transducer are rolled according to wheel, each strain transducer and car is obtained
Wheel rolls the relative distance data of position；
According to the relative distance data that each strain transducer and wheel roll position, and default gain function of weighing, obtain
Take the gain of weighing of each strain transducer；
According to the gain of weighing of each strain transducer, and the strain data of each strain transducer collection, obtain wheel
Average weight；
According to the weight that the average weight of wheel obtains target vehicle.
Preferably, the strain data according to the collection of each strain transducer, and the position data of each strain transducer,
Obtain the step of wheel rolls position data and specifically include：
Obtain the position coordinateses of the strain data and each strain transducer of each strain transducer of object time；
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, obtain mesh
The first of timestamp quarter rolls position coordinateses；
According to the strain data of not each strain transducer collection in the same time, obtain not in the same time first roll position seat
Mark；
In conjunction with weighted average method, according to not first rolling position coordinateses and obtain vehicle and roll position coordinateses in the same time,
I.e. wheel rolls position data.
Preferably, the strain data according to each strain transducer of object time, and the position of each strain transducer
Data, the first of acquisition object time specifically includes the step of rolling position coordinateses：
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, in conjunction with
Lower formula, obtain object time first roll position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=dij,(i,j≤N)
Wherein, xcFor the object time first rolls position coordinateses；xiPre-stored for i-th strain transducer
Position coordinateses；yiStrain data for i-th strain transducer of object time during wheels travel；N is strain transducer
Total number；F is to roll position coordinateses xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,
yN) between relation function；dijFor i-th strain transducer and the spacing distance of j-th strain transducer, i, j=1,2 ... N.
Preferably, the strain data of the gain of weighing according to each strain transducer, and each strain transducer collection,
The step of average weight for obtaining wheel, specifically includes：
Obtain first wheel weight of each strain transducer according to weigh gain and strain data output；
According to below equation, average treatment is weighted to the first wheel weight that each strain transducer is exported, is obtained flat
Equal wheel weight G：
Wherein, GiThe first wheel weight for i-th strain transducer output；a1,a2,…aNFor each strain transducer
The weight of the first wheel weight, and a1+a2+…aN=1.
Preferably, described according to the average weight of wheel obtain target vehicle weight the step of specifically include：
The average weight of all wheels is added, the weight of the target vehicle is obtained.
The invention allows for a kind of target vehicle weighing system, including：
First acquisition module, for when weight scale body of the target vehicle on track, obtaining to be arranged on and weighing
The dependent variable of the multiple strain transducer collections being spaced apart in scale body on the direction perpendicular with target vehicle travel direction
According to；
First processing module, for the strain data gathered according to each strain transducer, and the position of each strain transducer
Data are put, wheel is obtained and is rolled position data；
Second processing module, for rolling position data, and the position data of each strain transducer according to wheel, obtains
Each strain transducer rolls the relative distance data of position with wheel；
3rd processing module, for rolling the relative distance data of position, and in advance according to each strain transducer and wheel
If weighing gain function, the gain of weighing of each strain transducer is obtained；
Fourth processing module, for the gain of weighing according to each strain transducer, and the collection of each strain transducer should
Become data, obtain the average weight of wheel；
Second acquisition module, for obtaining the weight of target vehicle according to the average weight of wheel.
Preferably, the first processing module, specifically for obtain the strain data of each strain transducer of object time with
And the position coordinateses of each strain transducer；According to the strain data of each strain transducer of object time, and each strain transducer
Position data, obtain object time first rolls position coordinateses；Strain according to not each strain transducer collection in the same time
Data, obtain not in the same time first roll position coordinateses；In conjunction with weighted average method, according to not in the same time first roll position
Put coordinate and obtain vehicle and roll position coordinateses, i.e. wheel and roll position data.
Preferably, the first processing module, specifically for the strain data according to each strain transducer of object time, with
And the position data of each strain transducer, in conjunction with below equation, obtain object time first rolls position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=dij,(i,j≤N)
Wherein, xcPosition coordinateses are rolled for the object time first；xiPosition for the pre-stored of i-th strain transducer
Put coordinate；yiStrain data for i-th strain transducer of object time during wheels travel；N is total for strain transducer
Number；F is to roll position coordinateses xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,
yN) between relation function；dijFor i-th strain transducer and the spacing distance of j-th strain transducer, i, j=1,2 ... N.
Preferably, the fourth processing module, specifically for obtaining each strain transducer according to gain and the dependent variable of weighing
The first wheel weight according to output；According to below equation, the first wheel weight that each strain transducer is exported is weighted flat
Process, obtain average wheel weight G：
Wherein, GiThe first wheel weight for i-th strain transducer output；a1,a2,…aNFor each strain transducer
The weight of the first wheel weight, and a1+a2+…aN=1.
Preferably, second acquisition module, is added specifically for the average weight by all wheels, obtains the target
The weight of vehicle.
As shown from the above technical solution, the target vehicle Weighing method and system that the embodiment of the present invention is proposed is based on weight scale
The strain data of body calculates the weight for obtaining target vehicle, compared with prior art, with while weighing precision is improved, drops
The advantage of low-resource loss.
Description of the drawings
The features and advantages of the present invention can be more clearly understood from by reference to accompanying drawing, accompanying drawing is schematic and should not manage
Solution is to carry out any restriction to the present invention, in the accompanying drawings：
Fig. 1 shows a kind of schematic flow sheet of target vehicle Weighing method that one embodiment of the invention is provided；
Fig. 2 shows the structural representation of weight scale body in a kind of target vehicle Weighing method that one embodiment of the invention is provided
Figure；
Fig. 3 is the weighing precision result figure obtained using the weight scale body shown in Fig. 2；
Fig. 4 shows a kind of structural representation of target vehicle weighing system that one embodiment of the invention is provided.
Specific embodiment
Purpose, technical scheme and advantage for making the embodiment of the present invention is clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, to the embodiment of the present invention in technical scheme be clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Embodiment in based on the present invention, ordinary skill people
The every other embodiment obtained on the premise of creative work is not made by member, belongs to the scope of protection of the invention.
Fig. 1 shows a kind of schematic flow sheet of target vehicle Weighing method that one embodiment of the invention is provided, referring to figure
1, the target vehicle Weighing method, including：
110th, when weight scale body of the target vehicle on track, obtain and be arranged in weight scale body and target carriage
The strain data of the multiple strain transducers collections being spaced apart on the perpendicular direction of travel direction；
It should be noted that weight scale body is elastomeric material, strain transducer edge is arranged on perpendicular to travel direction weighs
On scale body, with when vehicle rolls weight scale body, measuring strain data；
It will be appreciated that when each strain transducer is installed, installation site, numbering for each strain transducer have note
Record, and by the data storage of record in processor.Thus, when the strain data of strain transducer is gathered, also this can be strained
The numbering of sensor or other identification information are together gathered.
In addition, strain transducer is distributed with kinds of schemes, for example：In one line etc., no longer it is defined herein.
120th, according to the strain data of each strain transducer collection, and the position data of each strain transducer, obtain car
Wheel rolls position data；
It should be noted that in target vehicle through each moment of weight scale body, each strain transducer can be detected
A strain data is obtained, strain data of the processor according to all strain transducers calculates the stone roller for obtaining wheel under the moment
Pressure position data；In the same manner, the strain data for being gathered based on multiple moment strain transducers, processor are calculated and obtain multiple moment pair
That answered rolls position data；And based on multiple moment corresponding roll position data calculate obtain one averagely roll position, remember
Position is rolled for wheel；
It will be appreciated that depending on the visual precision prescribed of the quantity of strain transducer is required.
130th, position data, and the position data of each strain transducer are rolled according to wheel, obtains each strain transducer
The relative distance data of position are rolled with wheel；
It should be noted that the relative distance data that each strain transducer rolls position with wheel can be by setting up coordinate
The method of system is calculated and is obtained；
That is, coordinate system is pre-build, records the position coordinateses of each strain transducer；Position coordinateses are rolled wheel is got
When, the position coordinateses and wheel according to strain transducer roll position coordinateses, calculate and obtain relative distance data.140th, according to each
Strain transducer rolls the relative distance data of position, and default gain function of weighing with wheel, obtains each strain transducer
Gain of weighing；
It should be noted that gain function of weighing is sensor weigh the relation function of gain and relative distance, Ke Yitong
Cross and weight scale body test calibration is obtained.
150th, according to the gain of weighing of each strain transducer, and the strain data of each strain transducer collection, obtain car
The average weight of wheel.
160th, the weight of target vehicle is obtained according to the average weight of wheel；
It will be appreciated that the wheel weight of all wheels is added, you can obtain the weight of the target vehicle.
Strain data of the present embodiment based on weight scale body calculates the weight for obtaining target vehicle, compared with prior art,
Having reduces the advantage of resource loss while weighing precision is improved.
In the present embodiment, step 120 is specifically included：
Obtain the position coordinateses of the strain data and each strain transducer of each strain transducer of object time；
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, obtain mesh
The first of timestamp quarter rolls position coordinateses；
According to the strain data of not each strain transducer collection in the same time, obtain not in the same time first roll position seat
Mark；
In conjunction with weighted average method, according to not first rolling position coordinateses and obtain vehicle and roll position coordinateses in the same time,
I.e. wheel rolls position data.
Wherein, first roll position coordinateses calculating process as follows：
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, in conjunction with
Lower formula, obtain object time first roll position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=dij,(i,j≤N)
Wherein, xcPosition coordinateses are rolled for described first；xiPosition coordinateses for the pre-stored of i-th strain transducer；yi
Strain data for i-th strain transducer during wheels travel；Total numbers of the N for strain transducer；F is sat for rolling position
Mark xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,yN) between relation function；dijFor
I-th strain transducer and the spacing distance of j-th strain transducer, i, j=1,2 ... N.
Fig. 2 shows the structural representation of weight scale body in a kind of target vehicle Weighing method that one embodiment of the invention is provided
Figure, referring to Fig. 2, the weight scale body includes consolidation zone and Weighing Area；
Consolidation zone, is connected with Weighing Area, for fixing Weighing Area, and weight scale body can be caused to be connected with external device (ED)；This
The external device (ED) at place can be weighing platform or be track etc.；
Multiple strain transducers are provided with Weighing Area, and the distribution mode of strain transducer is weighed for being evenly distributed on herein
On the centrage of area cross section in the horizontal direction；
It will be appreciated that the distribution arrangement of sensor is mutually perpendicular to the direction of traffic of vehicle.
The operation principle of the embodiment of the present invention is described in detail with reference to Fig. 2：
Step 1, on scale body as shown in Figure 2, multiple strain sensings are equally spacedly installed on edge in travel direction
Device, and each sensor is installed on the centrage of weighing platform Weighing Area, records the position coordinateses of each sensor.Here each sensor
Using equidistantly arrangement, in order to ensure the symmetry of structural constraint and the concordance of each sensor, convenient gain meter of subsequently weighing
Calculate；And spacing d of two neighboring sensor should be less than 200mm, in case the excessive valid data of spacing are less.Simultaneously in order to ensure scale
The service life of body, should be less than 500mm along travel direction scale body width.
When vehicle rolls weight scale body, scale body produces elastic deformation, and strain transducer measures the scale body of relevant position should
Become data.Data acquisition and processing (DAP) for convenience, here using each strain transducer data of branch packet collection, and ensures per group
Sensor only has video data all the way, is that step 2 rolls position calculation and prepares；
Step 2, extracts the strain data of each strain transducer in the same time as instantaneous strain data, according to instantaneous strain number
According to the position coordinateses with each strain transducer, wheel is determined along instantaneously rolling position in travel direction, concrete formula
For：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=(j-i) d, (i, j≤N)
Wherein, xcPosition coordinateses are rolled for described first；xiPosition coordinateses for the pre-stored of i-th strain transducer；yi
Strain data for i-th strain transducer during wheels travel；D is the spacing distance of two neighboring sensor, and f is to roll
Position coordinateses xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,yN) between relation letter
Number.Wherein it is determined that wheel rolls position coordinateses xcFunction f specifically refer to, synchronization N number of data to (x1,y1),
(x2,y2),…,(xN,yN) in choose n group non-zero instantaneous strain data two data of identical to (xi,yi) and (xm,ym), i.e. yi
=ym≠0,xi≠xmIf (not existing, obtain by the way of linear interpolation), according to symmetry, determine that wheel is rolled
Position coordinateses
That is, according to each moment N number of data to (x1,y1),(x2,y2),…,(xN,yN), quadratic polynomial fitting is carried out,
The coordinate of gained axis of symmetry is the first wheel and rolls position xc.
Further, the strain data of each strain transducer in the same time is chosen not, is repeated above-mentioned first and is rolled position coordinateses
Calculation procedure, obtain not wheel in the same time along position is instantaneously rolled in travel direction, its weighted average obtained
Final wheel rolls position.
Step 3, rolls position according to above-mentioned wheel and the position of each sensor that prestores, determines that each sensor is rolled with wheel
The relative distance of position；
Step 4, each sensor and the wheel according to step 3 gained roll the relative distance of position and gain function meter of weighing
Calculate the gain k that weighs of each strain transduceri；
Wherein, the relation function that gain function of weighing is weighed between gain and above-mentioned relative distance for strain transducer, should
Become sensor to weigh the ratio of strain data that gain gathered into strain transducer and tire weight；Above-mentioned gain function of weighing can
In test measurement, obtained by weight scale body is repeatedly tested and demarcated.
Step 5, weighs gain k according to sensoriWith strain transducer data Ti, obtain wheel weight Gi.Wherein, for
Each sensor i, can calculate a wheel weight G by its registrationi, and last output wheel weight G be then by the wheel weight of all calculating,
It is weighted according to the difference of relative distance and averagely obtains, i.e.,
Wherein, GiFor the first wheel weight of i-th strain transducer output, a1,a2,…aNNonnegative number is, respectively should be
Become the weight of the calculated wheel weight of sensor, the weight and only relevant, the relative distance with the relative distance information of each strain transducer
In information, the less weight coefficient of the distance value of carrying is bigger, and a1+a2+…aN=1.
Step 6, by all wheel weight obtained above directly plus and, itself and value are exactly the weight of whole target vehicle.
Based on the high accuracy result of wheel weight, gained complete vehicle weight precision is also fine, as shown in Figure 3.
For method embodiment, in order to be briefly described, therefore which is all expressed as a series of combination of actions, but ability
Field technique personnel should know that embodiment of the present invention is not limited by described sequence of movement, because according to the present invention
Embodiment, some steps can be carried out using other orders or simultaneously.Secondly, those skilled in the art should also know,
Embodiment described in this description belongs to preferred implementation, involved action embodiment party not necessarily of the present invention
Necessary to formula.
Fig. 4 shows a kind of structural representation of target vehicle weighing system that one embodiment of the invention is provided, referring to figure
4, the target vehicle weighing system, including：At first acquisition module 41, first processing module 42, Second processing module the 43, the 3rd
Reason module 44, fourth processing module 45 and the second acquisition module 46, wherein；
First acquisition module 41, for when weight scale body of the target vehicle on track, obtaining and being arranged on title
The strain of the multiple strain transducer collections being spaced apart in weight scale body on the direction perpendicular with target vehicle travel direction
Data；
First processing module 42, for the strain data gathered according to each strain transducer, and each strain transducer
Position data, obtains wheel and rolls position data；
Second processing module 43, for rolling position data, and the position data of each strain transducer according to wheel, obtains
Take the relative distance data that each strain transducer and wheel roll position；
3rd processing module 44, for rolling the relative distance data of position according to each strain transducer and wheel, and
Default gain function of weighing, obtains the gain of weighing of each strain transducer；
Fourth processing module 45, for the gain of weighing according to each strain transducer, and the collection of each strain transducer
Strain data, obtains the average weight of wheel；
Second acquisition module 46, for obtaining the weight of target vehicle according to the average weight of wheel.
Needs are, when target vehicle wheel rolls weight scale body, weight scale body occurs elastic deformation, the first acquisition module
41 collection strain transducers measure the strain data of relevant position, and give first processing module 42 He the data is activation for collecting
Fourth processing module 45；First processing module 42, for the strain data gathered according to each strain transducer, and each strain is passed
The position data of sensor, obtains wheel and rolls position data；Second processing module 43 is used for rolling position data according to wheel, with
And the position data of each strain transducer, obtain the relative distance data that each strain transducer and corresponding wheel roll position；
3rd processing module 44 rolls the relative distance data of position according to each strain transducer and corresponding wheel, and default weighs
Gain function, obtains the gain of weighing of each strain transducer, and by the data is activation for getting to fourth processing module 45；4th
Weigh gain of the processing module 45 according to each strain transducer for receiving, and the strain data of each strain transducer collection,
Obtain the average weight of wheel；Second acquisition module 46, is added for the weight by all wheels obtained according to above-mentioned steps,
Obtain the weight of target vehicle.
In the present embodiment, the first processing module 42, specifically for obtaining the strain of each strain transducer of object time
Data and the position coordinateses of each strain transducer；According to the strain data of each strain transducer of object time, and each strain
The position data of sensor, obtain object time first roll position coordinateses；According to not each strain transducer collection in the same time
Strain data, obtain not in the same time first roll position coordinateses；In conjunction with weighted average method, according to not in the same time first
Roll position coordinateses and obtain vehicle and roll position coordinateses, i.e. wheel and roll position data.
In the present embodiment, the first processing module 42, specifically for the strain according to each strain transducer of object time
Data, and the position data of each strain transducer, in conjunction with below equation, obtain object time first rolls position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=(j-i) d, (i, j≤N)
Wherein, xcPosition coordinateses are rolled for described first；xiPosition coordinateses for the pre-stored of i-th strain transducer；yi
Strain data for i-th strain transducer during wheels travel；Total numbers of the N for strain transducer；F is sat for rolling position
Mark xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,yN) between relation function；D is
The spacing of two neighboring sensor.
In the present embodiment, the fourth processing module 45, specifically for obtain each strain transducer according to weigh gain with
First wheel weight of strain data output；According to below equation, the first wheel weight that each strain transducer is exported is carried out
Weighted average process, obtains average wheel weight G：
Wherein, GiThe first wheel weight for i-th strain transducer output；a1,a2,…aNFor each strain transducer
The weight of the first wheel weight, and a1+a2+…aN=1.
For system embodiment, due to itself and method embodiment basic simlarity, so description is fairly simple,
Related part is illustrated referring to the part of method embodiment.
It should be noted that in all parts of the system of the present invention, according to its function to be realized to therein
Part has carried out logical partitioning, but, the present invention is not only restricted to this, as needed all parts can be repartitioned or
Person combines.
The present invention all parts embodiment can be realized with hardware, or with one or more processor fortune
Capable software module is realized, or is realized with combinations thereof.In the system, PC is by realizing the Internet to equipment or device
Remotely control, accurately the step of each operation of control device or device.The present invention is also implemented as execution here
(for example, computer program and computer program are produced for some or all equipment of described method or program of device
Product).It is achieved in that the program of the present invention can be stored on a computer-readable medium, and the file or document tool that program is produced
Having can be statistical, produces data report and cpk reports etc., can carry out batch testing to power amplifier and count.It should be noted that on
The present invention will be described rather than limits the invention to state embodiment, and those skilled in the art are without departing from institute
Replacement embodiment can be designed in the case of the scope of attached claim.In the claims, will should not be located between bracket
Any reference markss be configured to limitations on claims.Word "comprising" does not exclude the presence of unit not listed in the claims
Part or step.Word "a" or "an" before being located at element does not exclude the presence of multiple such elements.The present invention can be borrowed
Help include the hardware of some different elements and realized by means of properly programmed computer.If listing equipment for drying
Unit claim in, several in these devices can be embodied by same hardware branch.Word first,
Second and third use do not indicate that any order.These words can be construed to title.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can be without departing from this
Various modifications and variations are made in the case of bright spirit and scope, such modification and modification are each fallen within by claims
Within limited range.
Claims (10)
1. a kind of target vehicle Weighing method, it is characterised in that include：
When weight scale body of the target vehicle on track, obtain and be arranged in weight scale body and target vehicle traveling side
Strain data to the multiple strain transducer collections being spaced apart on perpendicular direction；
According to the strain data of each strain transducer collection, and the position data of each strain transducer, obtain wheel and roll position
Put data；
Position data, and the position data of each strain transducer are rolled according to wheel, each strain transducer is obtained and is ground with wheel
The relative distance data of pressure position；
According to the relative distance data that each strain transducer and wheel roll position, and default gain function of weighing, obtain each
The gain of weighing of strain transducer；
According to the gain of weighing of each strain transducer, and the strain data of each strain transducer collection, obtain the average of wheel
Weight；
According to the weight that the average weight of wheel obtains target vehicle.
2. method according to claim 1, it is characterised in that the strain data according to the collection of each strain transducer,
And the position data of each strain transducer, obtain the step of wheel rolls position data and specifically include：
Obtain the position data of the strain data and each strain transducer of each strain transducer of object time；
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, when obtaining target
First for carving rolls position coordinateses；
According to the strain data of not each strain transducer collection in the same time, obtain not in the same time first roll position coordinateses；
In conjunction with weighted average method, according to not first rolling position coordinateses and obtain vehicle and roll position coordinateses, i.e. car in the same time
Wheel rolls position data.
3. method according to claim 2, it is characterised in that the dependent variable according to each strain transducer of object time
According to, and the position data of each strain transducer, the first of acquisition object time specifically includes the step of rolling position coordinateses：
According to the strain data of each strain transducer of object time, and the position data of each strain transducer, in conjunction with following public affairs
Formula, obtain object time first roll position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=dij,(i,j≤N)
Wherein, xcFor the object time first rolls position coordinateses；xiPosition for the pre-stored of i-th strain transducer
Coordinate；yiStrain data for i-th strain transducer of object time during wheels travel；N total for strain transducer
Number；F is to roll position coordinateses xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,yN)
Between relation function；dijFor i-th strain transducer and the spacing distance of j-th strain transducer, i, j=1,2 ... N.
4. method according to claim 1, it is characterised in that the gain of weighing according to each strain transducer, and
The step of strain data of each strain transducer collection, average weight for obtaining wheel, specifically includes：
Obtain first wheel weight of each strain transducer according to weigh gain and strain data output；
According to below equation, average treatment is weighted to the first wheel weight that each strain transducer is exported, obtains average car
Wheel weight G：
Wherein, GiThe first wheel weight for i-th strain transducer output；a1,a2,…aNIt is right respectively with each strain transducer
The weight of the first wheel weight that answers, and a1+a2+…aN=1.
5. the method according to any one of claim 1-4, it is characterised in that described mesh is obtained according to the average weight of wheel
The step of weight of mark vehicle, specifically includes：
The average weight of all for target vehicle wheels is added, the weight of the target vehicle is obtained.
6. a kind of target vehicle weighing system, it is characterised in that include：
First acquisition module, for when weight scale body of the target vehicle on track, obtaining and being arranged on weight scale body
In multiple strain transducers collections being spaced apart on perpendicular with the target vehicle travel direction direction strain data；
First processing module, for the strain data gathered according to each strain transducer, and the positional number of each strain transducer
According to acquisition wheel rolls position data；
Second processing module, for rolling position data, and the position data of each strain transducer according to wheel, respectively should obtain
Become the relative distance data that sensor and wheel roll position；
3rd processing module, for rolling the relative distance data of position, and default title according to each strain transducer and wheel
Weight gain function, obtains the gain of weighing of each strain transducer；
Fourth processing module, for the gain of weighing according to each strain transducer, and the dependent variable of each strain transducer collection
According to the average weight of acquisition wheel；
Second acquisition module, for obtaining the weight of target vehicle according to the average weight of wheel.
7. system according to claim 6, it is characterised in that the first processing module, specifically for obtaining during target
Carve the position coordinateses of the strain data and each strain transducer of each strain transducer；According to each strain transducer of object time
Strain data, and the position data of each strain transducer, obtain object time first roll position coordinateses；During according to difference
Carve the strain data of each strain transducer collection, obtain not in the same time first roll position coordinateses；In conjunction with weighted average method,
According to not first rolling position coordinateses and obtain vehicle and roll position coordinateses, i.e. wheel and roll position data in the same time.
8. system according to claim 7, it is characterised in that the first processing module, specifically for during according to target
The strain data of each strain transducer, and the position data of each strain transducer is carved, in conjunction with below equation, object time is obtained
First roll position coordinateses：
xc=f (x1,y1,x2,y2,…,xN,yN)
xi-xj=dij,(i,j≤N)
Wherein, xcPosition coordinateses are rolled for object time first；xiPosition coordinateses for the pre-stored of i-th strain transducer；yi
Strain data for i-th strain transducer of object time during wheels travel；Total numbers of the N for strain transducer；F is stone roller
Pressure position coordinateses xc, each strain transducer position coordinateses (x1,x2,…xN) and strain data (y1,y2,…,yN) between relation
Function；dijFor i-th strain transducer and the spacing distance of j-th strain transducer, i, j=1,2 ... N.
9. system according to claim 6, it is characterised in that the fourth processing module, specifically for obtaining each strain
First wheel weight of the sensor according to weigh gain and strain data output；According to below equation, defeated to each strain transducer
The the first wheel weight for going out is weighted average treatment, obtains average wheel weight G：
Wherein, GiThe first wheel weight for i-th strain transducer output；a1,a2,…aNThe first car for each strain transducer
The weight of wheel weight, and a1+a2+…aN=1.
10. the system according to any one of claim 6-9, it is characterised in that second acquisition module, specifically for will
The average weight of all wheels is added, and obtains the weight of the target vehicle.
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