CN202350894U

CN202350894U - Vehicle weighing system

Info

Publication number: CN202350894U
Application number: CN2011205367061U
Authority: CN
Inventors: 吕奎; 胡平
Original assignee: SICHUAN MINKO ELECTR-MECHANIGAL ENGINEERING CO LTD
Current assignee: SICHUAN MINKO ELECTR-MECHANIGAL ENGINEERING CO LTD
Priority date: 2011-12-20
Filing date: 2011-12-20
Publication date: 2012-07-25
Anticipated expiration: 2021-12-20

Abstract

The utility model discloses a vehicle weighing system, which comprises two weighing sensors, wherein the weighing sensors are arranged on a left half lane and a right half lane respectively. Position sensors arranged in the vicinity of the weighing sensors are used for detecting the position area of a lane through while a vehicle passes, and correction coefficients for different areas are selected to correct an entire weight measured by the weighing sensors, so that the problem of incapability of correcting a weighing error caused by different unbalance loading areas of the vehicle in the prior art is solved, an implementation mode is simple, the system is easy to mount and low in engineering difficulty and cost, and the requirements of dynamic weighing technical specifications can be met.

Description

A kind of vehicle weighing system

Technical field

The utility model relates to the field of weighing, and relates in particular to a kind of vehicle weighing system.

Background technology

Existing vehicle weighing generally adopts the rectangular sensor of certain-length that the track is covered; After each wheel weight of sensor; The superimposed whole vehicle that calculates of each wheel weight is heavy, but because sensor weighing result receives manufacturing accuracy influences with road is irregular, vehicle is during through sensor diverse location (left, center, right, track is passed through); Difference between the diverse location can influence weighing result, causes vehicle weighing result and actual complete vehicle weight deviation to occur.Guarantee vehicle from the each point in track through the time weighing the result consistent, sensor accuracy, installation quality, road evenness are all proposed high requirement, difficulty is bigger in actual engineering, expense is high, and extremely is not easy to realize.

The utility model content

The purpose of the utility model provides a kind of vehicle weighing system; Solution is when weighing to dynamic vehicle; Because vehicle passes through the difference in lane position zone, and causes the serious problem of weighing results deviation, through detecting the band of position of vehicle through the track; Can select for use different correction factors to revise according to the diverse location zone, the weighting error that the fine correction vehicle unbalance-loading of ability causes.

In order to realize the foregoing invention purpose; The invention provides a kind of vehicle weighing system; Comprise two LOAD CELLSs that are separately positioned on left half track and right half track; Two LOAD CELLSs are used to measure complete vehicle weight, respectively are provided with a position judgment sensor in each LOAD CELLS one side, or the middle part, track in distance two LOAD CELLS certain distances is provided with a position judgment sensor; Each position judgment sensor and load cell signal all connect data processor;

When vehicle passed through, said LOAD CELLS and said position judgment sensor were exported corresponding signal waveform to said data processor respectively according to the weight that rolls wheel above that;

Data processor is according to the waveform signal of said LOAD CELLS and the output of said position judgment sensor; Judge the band of position of vehicle through the track; And according to the band of position in the track of judging and the preset corresponding correction factor in each band of position; Complete vehicle weight to LOAD CELLS is measured is revised, and obtains revised measurement result.

Preferably, said two LOAD CELLSs are rectangular sensor, and it is wide that its length equals half track, and two LOAD CELLSs are horizontally installed on left half track respectively and right half track covers whole track fully; Said position judgment sensor is a rectangular sensor.

Preferably; When said system is when each LOAD CELLS one side respectively is provided with a position judgment sensor; Said position judgment sensor lean on respectively the place ahead or rear 1m that track left side bearing and right side bearing be horizontally set at corresponding LOAD CELLS apart from, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

Preferably; When said system is when each LOAD CELLS one side respectively is provided with a position judgment sensor; Said position judgment sensor leans on the track center line to be horizontally set at the place ahead or the rear of corresponding LOAD CELLS respectively, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

Preferably, when said system when being provided with a position judgment sensor at the middle part, track of distance in the two LOAD CELLS certain distances, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

Preferably; Said system also comprises the storer that links to each other with said data processor; Be stored with the corresponding relation in relative waveform signal characteristics combination of each LOAD CELLS and lane position zone, and store the corresponding correction factor in each band of position with each position judgment sensor.

Near the utility model employing LOAD CELLS position transducer is set and detects the band of position of vehicle through the track; The complete vehicle weight that the subregion selects for use correction factor that LOAD CELLS is measured is revised; Solved in the existing design weighting error that can not fine correction vehicle unbalance-loading zone difference causes, implementation is simple, installs simple; The engineering difficulty is little, can low-costly satisfy dynamically weighing apparatus demand of technical standard.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment 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 embodiment of the utility model, 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 a is position judgment sensor paving location one synoptic diagram among the utility model embodiment;

Fig. 1 b is position judgment sensor paving location two synoptic diagram among the utility model embodiment;

Fig. 1 c is position judgment sensor paving location three synoptic diagram among the utility model embodiment;

Fig. 1 d is position judgment sensor paving location four synoptic diagram among the utility model embodiment;

Fig. 1 e is position judgment sensor paving location five synoptic diagram among the utility model embodiment;

Fig. 2 is the size and the installation site synoptic diagram of standard track and LOAD CELLS and location recognition detecting device among the utility model embodiment;

Fig. 3 is standard three-axle truck wheelbase and wheelspan size;

Fig. 4 a is that three-axle truck is from centre position, Fig. 2 track during zone passage among Fig. 3, and LOAD CELLS and position transducer roll synoptic diagram;

Fig. 4 b is for rolling the signal waveform synoptic diagram of generation among Fig. 4 a;

Fig. 5 a for three-axle truck among Fig. 3 from Fig. 2 track is leaned on, take back the band of position through the time, LOAD CELLS and position transducer roll synoptic diagram;

Fig. 5 b is for rolling the signal waveform synoptic diagram of generation among Fig. 5 a;

Fig. 6 a for three-axle truck among Fig. 3 keep left from Fig. 2 track the band of position through the time, LOAD CELLS and position transducer roll synoptic diagram;

Fig. 6 b is for rolling the signal waveform synoptic diagram of generation among Fig. 6 a;

Mark among the figure, 1-LOAD CELLS, 2-position judgment sensor.

Embodiment

To combine the accompanying drawing among the utility model embodiment below, the technical scheme among the utility model embodiment is carried out clear, intactly description, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, 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 utility model protection.

Weigh when wanting utilizing LOAD CELLS to carry out car load, guarantee vehicle from the each point in track through the time weighing the result consistent, sensor accuracy, installation quality, road evenness are all proposed high requirement; Difficulty is bigger in actual engineering, and expense is high, extremely is not easy to realize; Through revising the weighing results of vehicle unbalance-loading, make test weight consistent with the vehicle actual weight, be a kind of common method; Will revise unbalance loading, must discern the position of vehicle through LOAD CELLS, near one or more position transducers position LOAD CELLS is installed in the utility model utilization; Can effectively solve this difficult problem, when the unbalance loading of mentioning in this patent refers to that vehicle passes through the track, be not in the middle of the track, to pass through; But be partial to the track on one side, pass through LOAD CELLS like the limit of keeping right from the track.

The vehicle weighing system that the utility model embodiment proposes; Has the function that unbalance loading is revised; Comprise two LOAD CELLSs that are separately positioned on left half track and right half track, two LOAD CELLSs are used to measure complete vehicle weight, respectively are provided with a position judgment sensor in each LOAD CELLS one side; Or being provided with a position judgment sensor in the middle part of the track in distance two LOAD CELLS certain distances, each position judgment sensor and LOAD CELLS all link to each other with data processor; When vehicle passed through, said LOAD CELLS and said position judgment sensor according to the weight that rolls wheel above that, were exported corresponding signal waveform respectively; According to the waveform signal of said LOAD CELLS and said position judgment sensor output to data processor; To judge the band of position of vehicle through the track; And, the complete vehicle weight that LOAD CELLS is measured is revised according to the band of position in the track of judging and the preset corresponding correction factor in each band of position.Said system also comprises the storer that links to each other with said data processor; Be stored with the corresponding relation in relative waveform signal characteristics combination of each LOAD CELLS and lane position zone, and store the corresponding correction factor in each band of position with each position judgment sensor.Said judgement vehicle is through the band of position in track; Be that the waveform signal combination of said LOAD CELLS and the output of said position judgment sensor and the waveform signal characteristics combination of store memory storage are compared; Judge the band of position of vehicle through the track; Prestore the corresponding relation in relative waveform signal characteristics combination of each LOAD CELLS and lane position zone in the said storer with each position judgment sensor; According to the weight that rolls wheel above that, the corresponding signal waveform of output comprises that front-wheel rolls the signal waveform of generation and the signal waveform that trailing wheel rolls generation respectively for said LOAD CELLS and said position judgment sensor.When rolling vehicle when being two-wheel vehicles; The signal waveform that said trailing wheel rolls generation comprises: single-wheel rolls waveform signal and two-wheel rolls waveform signal; Wherein two-wheel rolls the waveform signal peak value and rolls the waveform signal peak value greater than single-wheel; Its peak value is approximately single-wheel and rolls 2 times of waveform signal peak value, and front-wheel rolls waveform signal peak value and back single-wheel to roll the waveform signal peak value almost similar, and its difference is in enough little threshold value.The said preset corresponding correction factor in each band of position; Be that said LOAD CELLS is measured during through each band of position, track according to the known weight vehicle the complete vehicle weight and the ratio calculation of this car actual weight are come out; Preestablish in the storer of system; After data processor is judged the lane position zone that car passes through, directly call corresponding correction factor and can repair the complete vehicle weight that LOAD CELLS is measured, make it near the whole vehicle actual weight.

Referring to Fig. 1 a, Fig. 1 b, Fig. 1 c, Fig. 1 d, Fig. 1 e is that four kinds of layings of position judgment sensor show that mode is intended in the embodiment of the invention, label 1 expression LOAD CELLS among the figure, label 2 expression position judgment sensors.Two LOAD CELLSs described in the present embodiment and position judgment sensor all are example with the rectangular sensor, and it is wide that LOAD CELLS length equals half track, and two LOAD CELLSs are horizontally installed on left half track respectively and right half track covers whole track fully.Wherein, Fig. 1 a, Fig. 1 b, Fig. 1 c are the laying schemes that respectively is provided with a position judgment sensor in each LOAD CELLS one side; Said position judgment sensor leans on track left side bearing and right side bearing to be horizontally set in the place ahead or rear 1m of corresponding LOAD CELLS respectively; Said position judgment sensor length value be the lane width value 1/3-2/5 between, about 0.2m-1m.

Fig. 1 d lays scheme for the another kind that respectively is provided with a position judgment sensor in each LOAD CELLS one side; Said position judgment sensor leans on the track center line to be horizontally set at the place ahead or the rear of corresponding LOAD CELLS respectively; Said position judgment sensor length value be the lane width value 1/3-2/5 between, about 0.2m-1m.And Fig. 1 e is for being provided with the laying scheme of a position judgment sensor at the middle part, track of distance in the two LOAD CELLS certain distances, said position judgment sensor length value be the lane width value 1/3-2/5 between, about 0.2m-1m.

By way of example introduction is in detail done further by the utility model system below in conjunction with Fig. 2 to Fig. 6 a, each one is identical because of lane width, at lane width not simultaneously, can adjust the length ratio of the location recognition sensor of laying according to actual lane width.

Referring to Fig. 2 is the size and the installation site synoptic diagram of standard track and LOAD CELLS and location recognition detecting device among the utility model embodiment; 3.25 meters in standard track; Arithemetic unit is a millimeter among Fig. 2, and in the present embodiment, rectangle LOAD CELLS length is 2.25 meters; The rectangle position judgment sensor length that is provided with is 500 millimeters, and set-up mode is with Fig. 1 a.Fig. 3 is standard three-axle truck wheelbase and wheelspan size, and arithemetic unit is a millimeter among Fig. 3, like 1.8 meters of wheelbases in the figure front-wheel; 2.3 meters of outer wheelbases, trailing wheel are two-wheel, 1.3 meters of interior wheelbases; 2.4 meters of outer wheelbases, the distance of front-wheel and first group of trailing wheel is 3.8 meters, two groups of trailing wheel spacings are 1.3 meters.Through the sensor setting among Fig. 2, can five zones be divided in the band of position that three-axle truck passes through from the track, comprising: the zone that keeps left, lean on center-left zone, zone line, lean on the center-right zone and the zone of keeping right.

Fig. 4 a is that three-axle truck is from centre position, Fig. 2 track during zone passage among Fig. 3, and LOAD CELLS and position transducer roll synoptic diagram, when vehicle passes through in the middle of the track; Position transducer is owing to length dimension and installation site, and axle two sidecar wheels only roll left and right sides LOAD CELLS respectively, can not roll position transducer; Signal waveform such as Fig. 4 b, time waveform signal before examination is the front-wheel signal, it is the trailing wheel signal that the time is leaned on position, back waveform signal; Visible among the figure, when vehicle passes through, have only the wheel weight signal in the middle of the track; Do not have position signalling, no position signalling is that the decidable vehicle passes through in the middle of the track.

Fig. 5 a for three-axle truck among Fig. 3 from Fig. 2 track is leaned on, take back the band of position through the time, LOAD CELLS and position transducer roll synoptic diagram, vehicle leans on when a left side is passed through the track from the track; Position transducer is owing to length dimension and installation site, and axle two sidecar wheels only roll left and right sides LOAD CELLS respectively, and left side wheel rolls part left side position transducer; Right side wheels does not roll right position transducer, and signal waveform such as Fig. 5 b are visible; When vehicle is taken back the position when passing through from the track is leaned on; LOAD CELLS provides the wheel weight signal respectively, and left position signalling is less, and single-wheel position signalling maximal value is identical with the single-wheel weighing-up wave; The two-wheel position signalling is less than the two-wheel weighing-up wave, according to above-mentioned signal characteristic: judge that the vehicle position of from the track is leaned on, taking back passes through.

Fig. 6 a for three-axle truck among Fig. 3 keep left from Fig. 2 track the band of position through the time, LOAD CELLS and position transducer roll synoptic diagram, when vehicle leans on the left side, track to pass through from the track; Position transducer is owing to length dimension and installation site, and vehicle left side wheel rolls at the leftward position sensor fully, and right side wheels is passed through in the middle of two position transducers; Roll right position transducer, signal waveform such as Fig. 6 b, visible; When vehicle keeps left the position when passing through from the track; LOAD CELLS provides the wheel weight signal respectively, and left position signalling is identical with left side single-wheel weighing-up wave, according to above-mentioned signal characteristic: judge that the vehicle position that keeps left from the track passes through.

Because the position transducer setting of present embodiment is symmetrical; Those skilled in the art can know through top description and combine what kind of waveform signal characteristic can judge that vehicle leans on the center-right zone or the zone passage of keeping right from the track, do not give unnecessary details at this.In the utility model embodiment; Five bands of position have been divided into to the track; Its respectively corresponding correction factor; Judge lorry through behind the particular location zone in track when data processor, call the complete vehicle weight that corresponding correction factor is measured LOAD CELLS in the storer and revise, obtain revised measurement result.

The utility model embodiment; Adopt position transducer to be set near the LOAD CELLS and to detect the band of position of vehicle through the track, the complete vehicle weight that the subregion selects for use correction factor that LOAD CELLS is measured is revised, and has solved in the existing design weighting error that can not fine correction vehicle unbalance-loading zone difference causes; Implementation is simple; Install simply, the engineering difficulty is little, can low-costly satisfy the demand of technical standard that dynamically weighs.

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 utility model is not limited to aforesaid embodiment.The utility model 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

1. vehicle weighing system; Comprise two LOAD CELLSs that are separately positioned on left half track and right half track; Two LOAD CELLSs are used to measure complete vehicle weight; It is characterized in that, respectively be provided with a position judgment sensor, or the middle part, track in distance two LOAD CELLS certain distances is provided with a position judgment sensor in each LOAD CELLS one side; Each position judgment sensor and load cell signal all connect data processor;

2. the system of claim 1, it is characterized in that: said two LOAD CELLSs are rectangular sensor, and it is long, and to equal half track wide, and two LOAD CELLSs are horizontally installed on left half track respectively and right half track covers whole track fully;

Said position judgment sensor is a rectangular sensor.

3. system as claimed in claim 2; It is characterized in that: when said system is when each LOAD CELLS one side respectively is provided with a position judgment sensor; Said position judgment sensor lean on respectively the place ahead or rear 1m that track left side bearing and right side bearing be horizontally set at corresponding LOAD CELLS apart from, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

4. system as claimed in claim 2; It is characterized in that: when said system is when each LOAD CELLS one side respectively is provided with a position judgment sensor; Said position judgment sensor leans on the track center line to be horizontally set at the place ahead or the rear of corresponding LOAD CELLS respectively, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

5. system as claimed in claim 2; It is characterized in that: when said system when being provided with a position judgment sensor at the middle part, track of distance in the two LOAD CELLS certain distances, said position judgment sensor length value scope be the lane width value 1/3-2/5 between.

6. like each described system in the claim 1 to 5; It is characterized in that; Said system also comprises the storer that links to each other with said data processor; Be stored with the corresponding relation in relative waveform signal characteristics combination of each LOAD CELLS and lane position zone, and store the corresponding correction factor in each band of position with each position judgment sensor.