CN102661777A - Vehicle dynamic weighing system - Google Patents
Vehicle dynamic weighing system Download PDFInfo
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- CN102661777A CN102661777A CN2012101730106A CN201210173010A CN102661777A CN 102661777 A CN102661777 A CN 102661777A CN 2012101730106 A CN2012101730106 A CN 2012101730106A CN 201210173010 A CN201210173010 A CN 201210173010A CN 102661777 A CN102661777 A CN 102661777A
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Abstract
The invention discloses a vehicle dynamic weighing system, comprising a weighing sensor, a charge amplifier and a controller. The weighing sensor comprises two groups of quartz sensors which are paved in a staggered manner; each group of the quartz sensors comprises two quartz piezoelectric sensors; the two quartz piezoelectric sensors in the each group of the quartz sensors are respectively transversely arranged on a left half lane and a right half lane at a front position and a back position; when a vehicle passes through the weighing sensor, the controller respectively calculates a vehicle weight value according to waveform signals generated by each group of the quartz sensors; and the calculated vehicle weight values are averaged, so as to obtain a final vehicle weighing value. The two groups of the quartz sensors are arranged in a parallel and staggered manner, so that an abnormal condition is effectively treated. Even if the vehicle passes through a sensor laying road section at a non-uniform velocity or in an 'S' shape, the deviation is corrected by averaging through calculation results of the two groups of the quartz sensors, so that the weighing result is more accurate.
Description
Technical field
The present invention relates to the field of weighing, relate in particular to a kind of vehicle dynamic weighing system.
Background technology
Existing vehicle dynamic is weighed and is generally adopted single quartz transducer that the track is covered, and detects pressure and speed through each road pavement of vehicle on it by quartz transducer, calculates each weight and the car load general assembly (TW) of this car then with embedded computer.Its computing formula is:
Axle weight=axletree speed/sensor width * piezoelectricity integral of pulse shape area * correction coefficient
Car load general assembly (TW)=each heavy sum
Can know by top formula, when vehicle at the uniform velocity non-or walk " S " route through the time, can cause weighing results deviation to occur like this.Therefore single quartz transducer can not solve vehicle abnormality through the time deviation of weighing that causes.And the quartz transducer weighing result receives the influence of road out-of-flatness and Vehicular vibration, and weighing results and actual complete vehicle weight also deviation can occur.Guarantee vehicle from single quartz transducer through the time weighing the result accurate, sensor accuracy, installation quality, road evenness and vehicle are all proposed high requirement through the speed of a motor vehicle, difficulty is bigger in actual engineering, extremely is not easy to realize.
Summary of the invention
The purpose of this invention is to provide a kind of vehicle dynamic weighing system; Solving existing single quartz weighing system can not cope well to abnormal conditions; Cause the inaccurate shortcoming of weighing results, a kind of vehicle dynamic weighing system is provided, by four parallel staggered being laid on the charging track of quartzy sensor; Abnormal conditions in the time of effectively handling vehicle through the sensor highway section accurately measure car weight.
In order to realize the foregoing invention purpose, the invention provides a kind of vehicle dynamic weighing system, comprise LOAD CELLS, charge amplifier and controller; The waveform signal that LOAD CELLS produces when wheel rolls;, charge amplifier is transferred to controller after amplifying; Controller calculates vehicle weight according to waveform signal, and said LOAD CELLS comprises two groups of quartz transducer groups, and every group of quartz transducer group comprises two quartzy piezoelectric sensors;
Two quartzy piezoelectric sensors in first group of quartz transducer group one in front and one in back are horizontally installed on left half track and right-hand lane respectively;
Second group of quartz transducer group and first group of quartz transducer group are crisscross arranged, and two quartzy piezoelectric sensors in second group of quartz transducer group one in front and one in back are horizontally installed on right-hand lane and left half track;
When vehicle passed through LOAD CELLS, controller calculated a car weight value respectively according to the waveform signal that every group of quartz transducer produces; And each car weight value that will calculate asks on average, obtains final vehicle weighing value.
Wherein, the fore-and-aft clearance between two quartzy piezoelectric sensors in every group of quartz transducer group is identical, and scope is 500mm-1000mm; The distance that is staggered front to back between second group of quartz transducer group and the first group of quartz transducer group is-200mm ~ 200mm.
Preferably, the fore-and-aft clearance between two quartzy piezoelectric sensors in every group of quartz transducer group is 800mm; The distance that is staggered front to back between second group of quartz transducer group and the first group of quartz transducer group is 100mm.
Compared with prior art, the present invention has following beneficial effect:
The present invention adopts two groups of quartz transducers to be laid on the track as LOAD CELLS; Can effectively reduce because the deviation of weighing that Uneven road and Vehicular vibration cause; And it is because the parallel staggered paving mode of two groups of quartz transducer groups can effectively handle abnormal conditions, even at the uniform velocity non-or walk " S " and lay the highway section through sensor when vehicle; Also can average and revise deviation, make weighing results more accurate through the result of calculation of two groups of quartz transducers.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings:
Fig. 1 is a vehicle dynamic weighing system structural representation in the embodiment of the invention;
Fig. 2 is the paving location synoptic diagram of LOAD CELLS in the embodiment of the invention vehicle dynamic weighing system.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Referring to Fig. 1; Be vehicle dynamic weighing system structural representation in the embodiment of the invention; Vehicle dynamic weighing system of the present invention comprises LOAD CELLS 1, charge amplifier 2 and controller 3, the waveform signal that LOAD CELLS 1 produces when wheel rolls; After charge amplifier 2 amplifies, be transferred to controller 3, controller 3 calculates vehicle weight according to waveform signal.LOAD CELLS 1 can be laid in the weight metering charging track, apart from tollbooth 18m between the 24m.
Referring to Fig. 2; Paving location synoptic diagram for LOAD CELLS among Fig. 11; Said LOAD CELLS 1 comprises two groups of quartz transducer groups, and every group of quartz transducer group comprises two quartzy piezoelectric sensors, the length of every quartzy piezoelectric sensor can for the lane width value 2/5-3/5 between.In Fig. 2, C1, C2, C3, C4 represent a quartzy piezoelectric sensor respectively, and wherein C1, C2 are that one group of quartz transducer group, C3, C4 are one group.Among Fig. 2, the L1 span is :-200mm ~ 200mm (direction of traffic for just), the L2 span is: 500mm ~ 800mm, the L3 span is :-200mm ~ 200mm (direction of traffic for just).
Two quartzy piezoelectric sensors in first group of quartz transducer group one in front and one in back are horizontally installed on left half track and right-hand lane respectively, are combined as first group of quartz transducer group like C1, C2 among Fig. 2; See from garage's direction; Quartzy piezoelectric sensor C1 is horizontally installed on left-hand lane, and quartzy piezoelectric sensor C2 is horizontally installed on right-hand lane, makes when vehicle passes through this track; Revolver is pressed on the C1, and right pressure wheel is on C2.Every group of sensor (C1, C2; C3, C4) length can take the symmetry or asymmetric laying, wide like the track is 3m, then can choose the length value of C1 and the length value of C2 and be 1.5m; Wide like the track is 3.25m, and the length value that then can choose C1 is 1.75m, and the length value of C2 is 1.5m.
Second group of quartz transducer group and first group of quartz transducer group two quartzy piezoelectric sensors in (like Fig. 2, the C1C2 group is laid with the C3C4 group is staggered) second group of quartz transducer group that are crisscross arranged one in front and one in back are horizontally installed on right-hand lane and left half track; In Fig. 2, quartzy piezoelectric sensor C3 is horizontally installed on right-hand lane, and quartzy piezoelectric sensor C4 is horizontally installed on left-hand lane, makes that when vehicle passed through this track, revolver was pressed on the C4, and right pressure wheel is on C3.
Fore-and-aft clearance between two quartzy piezoelectric sensors in every group of quartz transducer group is identical; Scope is 500mm-1000mm; Be the fore-and-aft clearance between C1 among Fig. 2, the C2, the fore-and-aft clearance that reaches between C3, the C4 can be 500mm-1000mm, is preferably 800mm in the present invention.And the distance that is staggered front to back between second group of quartz transducer group and the first group of quartz transducer group is-200 ~ 200mm (direction of traffic for just), and promptly the fore-and-aft clearance between C1, C3 or C2, the C4 is-200mm ~ 200mm, is preferably 100mm among the present invention.
In the present invention, LOAD CELLS need store the fore-and-aft clearance value between two quartzy piezoelectric sensors in every group of quartz transducer group in the controller into after laying according to the mode of Fig. 2 in advance.When vehicle is laid the highway section through LOAD CELLS; As long as having wheel to roll, quartzy piezoelectric sensor C1, C2, C3, C4 will produce corresponding waveform signal; Front-wheel with a car during through LOAD CELLS is an example: the near front wheel can roll C1 and C4 successively; Off-front wheel can roll C3 and C2 successively, and each quartzy piezoelectric sensor all can produce a waveform signal and send in the controller.Controller calculates a car weight value respectively according to the waveform signal that every group of quartz transducer produces, and each car weight value that will calculate asks on average, obtains final vehicle weighing value.
Wherein, The waveform signal that controller produces according to every group of quartz transducer calculates the detailed process of a car weight value respectively; Can combine Fig. 2 to use following example shows, wherein: the fore-and-aft clearance of C1 and C2 representes that with s1 the fore-and-aft clearance between C3 and the C4 is represented with s2.
After controller receives the waveform signal from LOAD CELLS; The wave form analysis that waveform that sends according to C1 and C2 send calculates the time t1 of vehicle through the s1 distance; The wave form analysis that the waveform that sends according to C3 simultaneously and C4 send calculates the time t2 of vehicle through the s2 distance (because temporal information is contained in the waveform signal the inside, therefore passing through waveform signal analysing segment distance vehicle, to pass through the time very easy).Calculate an axletree speed respectively with s1/ t1 and s2/ t3 then, formula calculates a car weight value respectively below two the axletree speed substitution that will calculate at last:
Axle weight=axletree speed/sensor width * piezoelectricity integral of pulse shape area * correction coefficient
Car weight value=each heavy sum
Wherein, Piezoelectricity integral of pulse shape area calculates according to the waveform that quartzy piezoelectric sensor returns; And correction coefficient is to preset in the controller, and sensor width is stored in the controller after measuring according to actual conditions, and the width of common quartzy piezoelectric sensor is 70mm; The account form of piezoelectricity integral of pulse shape area and aforementioned calculation formula are existing common technology, do not do too much at this and give unnecessary details.
Two car weight values that controller will calculate are at last asked on average, obtain final vehicle weighing value, and in vehicle metering system, controller is sent to the cash readout place with this value, as one of metering data after calculating final vehicle weighing value.
Because LOAD CELLS comprises two groups of quartz transducer groups among the present invention; The increase of number of sensors can effectively reduce owing to the deviation of weighing that Uneven road draws or Vehicular vibration rises, and because the parallel staggered paving mode of two groups of quartz transducer groups; Can effectively handle abnormal conditions; Even at the uniform velocity non-or walk " S " and lay the highway section through sensor when vehicle, also can average and revise deviation through the result of calculation of two groups of quartz transducers, make weighing results more accurate.
Disclosed all characteristics in this instructions, or the step in disclosed all methods or the process except mutually exclusive characteristic and/or the step, all can make up by any way.
Disclosed arbitrary characteristic in this instructions (comprising any accessory claim, summary and accompanying drawing) is only if special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, only if special narration, each characteristic is an example in a series of equivalences or the similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (2)
1. a vehicle dynamic weighing system comprises LOAD CELLS, charge amplifier and controller; The waveform signal that LOAD CELLS produces when wheel rolls;, charge amplifier is transferred to controller after amplifying; Controller calculates vehicle weight according to waveform signal; It is characterized in that said LOAD CELLS comprises two groups of quartz transducer groups, every group of quartz transducer group comprises two quartzy piezoelectric sensors;
Two quartzy piezoelectric sensors in first group of quartz transducer group one in front and one in back are horizontally installed on left half track and right-hand lane respectively;
Second group of quartz transducer group and first group of quartz transducer group are crisscross arranged, and two quartzy piezoelectric sensors in second group of quartz transducer group one in front and one in back are horizontally installed on right-hand lane and left half track;
When vehicle passed through LOAD CELLS, controller calculated a car weight value respectively according to the waveform signal that every group of quartz transducer produces; And each car weight value that will calculate asks on average, obtains final vehicle weighing value.
2. the system of claim 1 is characterized in that:
Fore-and-aft clearance between two quartzy piezoelectric sensors in every group of quartz transducer group is identical, and scope is 500mm-1000mm;
The distance that is staggered front to back between second group of quartz transducer group and the first group of quartz transducer group is-200mm ~ 200mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201210173010 CN102661777B (en) | 2012-05-30 | 2012-05-30 | Vehicle dynamic weighing system |
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| CN 201210173010 CN102661777B (en) | 2012-05-30 | 2012-05-30 | Vehicle dynamic weighing system |
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| CN102661777B CN102661777B (en) | 2013-08-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104792395A (en) * | 2015-03-24 | 2015-07-22 | 中国计量科学研究院 | Entire-vehicle type dynamic vehicle scale axle load measurement and calibration method |
| CN106895901A (en) * | 2017-03-31 | 2017-06-27 | 广东华兰海电测科技股份有限公司 | Hybrid Road Dynamic Weighing System |
| CN109916485A (en) * | 2017-12-13 | 2019-06-21 | 北京万集科技股份有限公司 | Dynamic vehicle weighing method and device |
| CN113218485A (en) * | 2021-05-06 | 2021-08-06 | 南京畅物网络科技有限公司 | Method for calculating dynamic weighing of abnormal vehicle running |
| CN113624313A (en) * | 2021-09-14 | 2021-11-09 | 武汉理工大学 | Dynamic weighing method, device, system and storage medium for parallel vehicles |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104792395A (en) * | 2015-03-24 | 2015-07-22 | 中国计量科学研究院 | Entire-vehicle type dynamic vehicle scale axle load measurement and calibration method |
| CN106895901A (en) * | 2017-03-31 | 2017-06-27 | 广东华兰海电测科技股份有限公司 | Hybrid Road Dynamic Weighing System |
| CN109916485A (en) * | 2017-12-13 | 2019-06-21 | 北京万集科技股份有限公司 | Dynamic vehicle weighing method and device |
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| CN113218485A (en) * | 2021-05-06 | 2021-08-06 | 南京畅物网络科技有限公司 | Method for calculating dynamic weighing of abnormal vehicle running |
| CN113624313A (en) * | 2021-09-14 | 2021-11-09 | 武汉理工大学 | Dynamic weighing method, device, system and storage medium for parallel vehicles |
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| CN102661777B (en) | 2013-08-28 |
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