CN1808079A - Soft blanket type weighing device and weighing method - Google Patents
Soft blanket type weighing device and weighing method Download PDFInfo
- Publication number
- CN1808079A CN1808079A CN 200610049573 CN200610049573A CN1808079A CN 1808079 A CN1808079 A CN 1808079A CN 200610049573 CN200610049573 CN 200610049573 CN 200610049573 A CN200610049573 A CN 200610049573A CN 1808079 A CN1808079 A CN 1808079A
- Authority
- CN
- China
- Prior art keywords
- pole plate
- weighing
- weighing device
- blanket type
- shape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a weighing device which comprises: weighing sensor which includes flexible conducting materials as the upper and lower electrode boards, and insulating flexible material as insulating medium between the upper and lower electrode boards; it also includes weighing object and identifying layer of the electrode contacting shape and area. The invention also provides a method for weight measuring, which comprises: employing the weighing device, weighing sensor which includes the upper and lower electrode board flexible materials and the insulating flexible materials between the upper and lower electrode boards medium; implementing signal processing on the contacting shape and area of the weighing object and the electrode board, and the capacity parameter signal of the upper and lower electrode boards; measuring the weight of the weighing objects.
Description
Technical field
The present invention relates to weighing apparatus or weighing technology field.
Background technology
As everyone knows, the payload of vehicle has very big influence for the highway that has built up, bridge.Overload of vehicle not only can increase the HIGHWAY MAINTENANCE expense, shortens service life of road surface, and can influence the traffic capacity of the safety traffic vehicle of vehicle.
For weighing of vehicle, traditional method is all carried out under static state, though the accuracy of this car load measuring method is very high, exists very big shortcoming, and is higher as price, can not measure axle respectively and heavily wait.In addition, stopping automobilism in the practical application, to carry out weight measurement also be inconvenient.
Truck scale relatively more commonly used mainly contains bent plate, piezoelectric sensor, single-sensor and Fibre Optical Sensor etc. in vehicle dynamic weighing system at present.But existing truck scale and big-and-middle-sized weighing apparatus all have cost an arm and a leg (every about 150,000 yuan-200,000 yuan of truck scales), installation requirement is high and shortcoming complicated, that can not carry, and these shortcomings have restricted the widespread use of big-and-middle-sized weighing apparatus.The medium-sized and small enterprises not too strong as some economic strengths do not cause economic loss when the turnover barter deal because of there being enough fund to buy truck scale; Therefore the road stand under load condition monitoring of highway communication and transport supervision work safely is not yet generally carried out and maybe can't be carried out; And loglstics enterprise often produces some disputes because of both sides do not have measurement means in the bulk goods dispensing, has influenced the bulkload Trade Development.
Summary of the invention
It is lower that the present invention's technical matters at first to be solved provides a kind of cost that is easy to carry, and is suitable for soft blanket type weighing device static and that dynamic weighing is measured.For this reason, the present invention is by the following technical solutions: it comprises LOAD CELLS, described LOAD CELLS comprises that it also comprises the identification layer of weigh object and pole plate contact shape and area as the flexible conducting material of upper and lower pole plate with as the insulation flexible material of insulating medium between upper and lower pole plate.
Weighing device provided by the present invention, its LOAD CELLS are soft lamellar, can be reeled as carpet, are convenient to carry with means of transport, and cost simple in structure is low, are convenient to static and the dynamic weighing measurement.
Above-mentioned identification layer can adopt following structure: it comprises the striped that is made of resistance material on the film that is arranged on of two-layer intersection, is provided with between two-layer striped and intercepts the contact of two stripe layers can make the pressurized position contact of two stripe layers when being under pressure the saturating dead level of elastic insulated isolation when no pressure.
Weighing device provided by the present invention, its signal processing, can comprise weigh object and pole plate contact area and the shape recognition sweep circuit that are connected with identification layer, and the capacitance parameter digitized signal of symmetrical weight body and pole plate contact area and shape digital signal and upper and lower pole plate is handled and the signal processing apparatus of the weight of object that obtains weighing.
Another technical matters to be solved of the present invention provides a kind of weighing measuring method of soft blanket type weighing device.For this reason, the present invention is by the following technical solutions: it utilizes above-mentioned soft blanket type weighing device, to constitute LOAD CELLS as the flexible conducting material of upper and lower pole plate with as the intermediate insulation flexible material of upper and lower electrode plate insulation medium, capacitance parameter signal by signal processing apparatus symmetry weight body and pole plate contact shape and area digital signal processing and upper and lower pole plate is handled, and measures the weight of the object of weighing.
To the weigh surface of contact of object and pole plate of signal processing apparatus is decomposed into several concrete given shapes, according to corresponding relationship model between shape and area and the gravity, measures the weight of the object of weighing.
Owing to adopt said method, can carry out static state or dynamic weighing measurement by symmetrical weight body.
Description of drawings
Fig. 1 is the cut-open view of the LOAD CELLS of weighing device in one embodiment of the present invention.
Fig. 2 is the synoptic diagram of wherein one deck striped of the identification layer of weighing device in one embodiment of the present invention.
Fig. 3 be cooperate with the striped of Fig. 2 in the identification layer the synoptic diagram of another layer striped.
The view that Fig. 4 is an identification layer when pressurized not.
Fig. 5 is the view of identification layer when pressurized.
Fig. 6 is the theory diagram of weighing device in one embodiment of the present invention.
Fig. 7 is the software flow pattern of Weighing method in one embodiment of the present invention.
Embodiment
With reference to accompanying drawing 1.It comprises LOAD CELLS 10 soft blanket type weighing device provided by the present invention, described LOAD CELLS comprises that it also comprises the identification layer 4 of weigh object and pole plate contact shape and area as the flexible conducting material of upper and lower pole plate 1,2 with as the insulation flexible material of insulating medium 3 between upper and lower pole plate.
With reference to accompanying drawing 1,2,3.Described identification layer comprises the striped 43,44 that being arranged on of two-layer intersection is made of resistance material on the film 41,42, is provided with between two-layer striped and intercepts the contact of two stripe layers can make the pressurized position contact of two stripe layers when being under pressure the saturating dead level 45 of elastic insulated isolation when no pressure.As shown in Figure 1, saturating dead level 45 is made of the insulation strip that is provided with at interval.
Striped 43,44 can adopt printing or corroding method, produces on organic film, and striped is close more, and the precision of identification area and shape is high more.Striped 43,44 is vertical mutually in use, and striped 43,44 is not isolated not touching of dead level 45 when having object to press, as shown in Figure 4.If film 41 (A plate) is close on the soft blanket type LOAD CELLS, when weight was pressed on the film 42 (B plate), distortion shown in Figure 5 took place, this moment, film 41 had the part area to contact with film 42; When resistive film bar 43 making alives of giving film 41 successively, the while is the voltage of MEASUREMENTS OF THIN 42 upper resistance film bars 44 successively, can make the area and the shape of weight rear film 42 distortion.As the situation of Fig. 5, the judgement of Y direction position can be powered on by film 42 and be pressed in greater than 0V, determines less than the position of the resistive film bar of 5V; When judging directions X, can on the resistive film bar of film 42, add 5V voltage one by one in, judge that film 41 powers on to be pressed in greater than 0V, to determine less than the position of the resistive film bar of 5V.No matter be the Y direction, or directions X all can also test the position of contact by the size of voltage, and voltage 3.7V is the result of Y direction electric resistance partial pressure as shown in Figure 5.
In addition, identification layer also can adopt other can reflect the construction and device of weigh object and pole plate contact shape and area.With regard to identification layer, preferably also be thin blanket shape, be located at the surface of LOAD CELLS.
With reference to accompanying drawing 6.The control section of weighing device provided by the invention comprises weigh object and pole plate contact area and the shape recognition sweep circuit that is connected with identification layer, and the capacitance parameter digitized signal of symmetrical weight body and pole plate contact area and shape digital signal and upper and lower pole plate is handled and the signal processing apparatus of the weight of object that obtains weighing.
With reference to accompanying drawing 6.When the capacitance parameter signal was simulating signal, control section need be provided with the A/D change-over circuit, simulating signal is transferred to digital signal for signal processing means processes.In addition, also the small capacitance amplifying circuit can be set to the capacitance parameter signal.
Sweep circuit, A/D change-over circuit, the small capacitance amplifying circuit that the present invention adopts can adopt sweep circuit, A/D change-over circuit, amplifying circuit commonly used at present, the signal processing apparatus present embodiment be to adopt single-chip microcomputer 7 (MCU/DSP), signal processing apparatus also can adopt other equipment that calculating and processing power are arranged, such as computer.
Described flexible conducting material is a conductive rubber, and described insulation flexible material is an electro-insulating rubber.
With reference to accompanying drawing 1,2,3,4,5,6 and 7.Weighing measuring method provided by the invention, it utilizes above-mentioned soft blanket type weighing device, to constitute LOAD CELLS as the flexible conducting material of upper and lower pole plate with as the intermediate insulation flexible material of upper and lower electrode plate insulation medium, capacitance parameter signal by signal processing apparatus symmetry weight body and pole plate contact shape and area digital signal processing and upper and lower pole plate is handled, and measures the weight of the object of weighing.
When weight is pressed on the pole plate, insulating medium 3 shapes that pole plate is 1,2 change, this will cause the capacitance parameter between two-plate to change, the gravity size that weight acts in the plane has certain relation with capacitance parameter, capacitance parameter and weight of heavy were definite relations when this pass tied up to same compression area shape, utilized this relation can realize the weighing measurement of object.
With reference to accompanying drawing 6, obtain the small capacitance parameter relevant by the LOAD CELLS sense with tested weight, micro capacitance and signal amplification circuit are transformed into corresponding with it magnitude of voltage with capacitance parameter, magnitude of voltage becomes and the weight digital signal corresponding through the A/D change-over circuit, signal processing apparatus is in weigh object and the pole plate contact area and the shape digital signal of digitized signal that receives the electric capacity variable after the A/D change-over circuit transforms and identification sweep circuit, according to corresponding relationship model between shape and area and the gravity, measure the weight of the object of weighing.The acquired weight of object of weighing (quality) can certainly directly be delivered to host computer or display with wired mode through the signal transmission circuit wireless transmit to needed place; After receiving weight (quality) signal, after handling, the MCU/DSP signal processing system send host computer or display by wireless mode.Signal processing apparatus can be decomposed into the surface of contact of weigh object and pole plate several concrete given shapes, and described given shape can be single a kind of shape, such as rectangle.Described given shape comprises some kinds of shapes, such as rectangle, garden shape or other shape.Some erose models can be demarcated by experiment, the corresponding capacitance parameter that draws and the related table of weight.
In the present embodiment, flexible conducting material and insulation flexible material all adopt elastomeric material, in application, consider from the fatigue strength of rubber element, its dependent variable is controlled at ε＜15% scope, and at this moment, the stress and strain relation of rubber element when compression can be expressed as approx:
σ≈E
aε (1)
Promptly
F is that sensor is stressed in the formula, and A is a lifting surface area.
Rubber is in when compression, its apparent elastic modulus E
aRelevant with the geometric configuration of compressed rubber element, can be expressed as
E
a＝iG (3)
In the present embodiment, with rectangle as object and the pole plate contact shape of weighing
k＝10.7-0.098HS (5)
G is the shear modulus of rubber in the formula;
I is geometric configuration and hardness influence coefficient;
HS is a Shore hardness;
S is a shape coefficient, loaded area A
LWith free area A
rRatio.
A, b are respectively the length of rectangular rubber and wide.
Because LOAD CELLS is soft, so when load was applied on the sensor, sensor had only the part of the force that deformation takes place, should be considered to combined type rubber to sensor this moment, (5) a in the formula, b should be respectively the length of whole sensor table top and length that the part of the force is gone in reductions and wide value.And deflection Δ h/h＜＜1 o'clock,
C in this formula
LBe capacitance weighing sensor part of the force initial capacitance value, and:
C is a whole capacitor formula LOAD CELLS initial capacitance value;
A is a lifting surface area;
A
0Be the whole sensor footprint.
(7) formula is brought in (6) formula,
With (3), (4), (5), (8) formula is brought in (2) formula and can gets:
G, A in the formula
0, C makes the back for given value at sensor, a, b can measure by identification layer and identification sweep circuit and obtain.
During static weighing, the various objects of weighing accurately weighs for convenience, before weighing, calculate the gravity (or quality) of object earlier by rectangular formula (seeing formula 9) at the hard plate signal processing apparatus in soft blanket type sensor upper berth, again with weight (or quality) feed signals radiating circuit, or send display 5 or host computer 6.
Dynamic weighing is the dynamic weighing that is applied to driving vehicle, and the wheel of vehicle is that two-wheeled is after the back two-wheeled before crossing earlier in the weighing process, and when on the pressure wheel during soft blanket type sensor, signal processing apparatus draws the area of pressure wheel by area and shape recognition layer.Minimum rectangle behind the resistive film bar quadrature among Fig. 3 on the film is δ * δ, and wherein δ is the distance of the centreline space of two resistance stripeds.The little rectangle that various contact shapes can be regarded as approx by a plurality of δ * δ is combined into, and according to the computation model of timing signal the capacitance that records is calculated the out-of-date weight of pressure wheel; With preceding two-wheeled, the out-of-date weight addition of back two wheel loads, then draw the general assembly (TW) (quality) of vehicle.
Claims (8)
1, soft blanket type weighing device, it is characterized in that it comprises LOAD CELLS, described LOAD CELLS comprises that it also comprises the identification layer of weigh object and pole plate contact shape and area as the flexible conducting material of upper and lower pole plate with as the insulation flexible material of insulating medium between upper and lower pole plate.
2, soft blanket type weighing device as claimed in claim 1, it is characterized in that described identification layer comprises the striped that is made of resistance material on the film that is arranged on of two-layer intersection, be provided with between two-layer striped and when no pressure, intercept the contact of two stripe layers can make the pressurized position contact of two stripe layers when being under pressure the saturating dead level of elastic insulated isolation.
3, soft blanket type weighing device as claimed in claim 1 or 2, it is characterized in that it is provided with weigh object and pole plate contact area and the shape recognition sweep circuit that is connected with identification layer, and the capacitance parameter digitized signal of symmetrical weight body and pole plate contact area and shape digital signal and upper and lower pole plate is handled and the signal processing apparatus of the weight of object that obtains weighing.
4, soft blanket type weighing device as claimed in claim 1 or 2 is characterized in that described flexible conducting material is a conductive rubber, and described insulation flexible material is an electro-insulating rubber.
5, a kind of weighing measuring method of soft blanket type weighing device, it is characterized in that it utilizes the described soft blanket type weighing device of claim 1, to constitute LOAD CELLS as the flexible conducting material of upper and lower pole plate with as the intermediate insulation flexible material of upper and lower electrode plate insulation medium, capacitance parameter signal by signal processing apparatus symmetry weight body and pole plate contact shape and area digital signal processing and upper and lower pole plate is handled, and measures the weight of the object of weighing.
6, the weighing measuring method of a kind of soft blanket type weighing device as claimed in claim 5, it is characterized in that will the weigh surface of contact of object and pole plate of signal processing apparatus is decomposed into several concrete given shapes, according to corresponding relationship model between shape and area and the gravity, measure the weight of the object of weighing.
7, the weighing measuring method of a kind of soft blanket type weighing device as claimed in claim 6 is characterized in that described given shape is a rectangle.
8, the weighing measuring method of a kind of soft blanket type weighing device as claimed in claim 6 is characterized in that described given shape comprises some kinds of shapes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495739A CN100549634C (en) | 2006-02-22 | 2006-02-22 | Soft blanket type weighing device and weighing measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495739A CN100549634C (en) | 2006-02-22 | 2006-02-22 | Soft blanket type weighing device and weighing measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1808079A true CN1808079A (en) | 2006-07-26 |
| CN100549634C CN100549634C (en) | 2009-10-14 |
Family
ID=36840096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100495739A Expired - Fee Related CN100549634C (en) | 2006-02-22 | 2006-02-22 | Soft blanket type weighing device and weighing measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100549634C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852639B (en) * | 2010-02-24 | 2012-03-28 | 宇龙计算机通信科技(深圳)有限公司 | Method and system for weighing weight of object at mobile terminal and mobile terminal |
| CN104655241A (en) * | 2015-02-16 | 2015-05-27 | 苏州佳世达电通有限公司 | Electronic device |
| CN104933280A (en) * | 2014-03-20 | 2015-09-23 | 无锡百科知识产权有限公司 | Estimation method for bulk cargos |
| CN111103049A (en) * | 2018-10-25 | 2020-05-05 | 博西华电器（江苏）有限公司 | Kitchen scale |
-
2006
- 2006-02-22 CN CNB2006100495739A patent/CN100549634C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852639B (en) * | 2010-02-24 | 2012-03-28 | 宇龙计算机通信科技(深圳)有限公司 | Method and system for weighing weight of object at mobile terminal and mobile terminal |
| CN104933280A (en) * | 2014-03-20 | 2015-09-23 | 无锡百科知识产权有限公司 | Estimation method for bulk cargos |
| CN104655241A (en) * | 2015-02-16 | 2015-05-27 | 苏州佳世达电通有限公司 | Electronic device |
| CN111103049A (en) * | 2018-10-25 | 2020-05-05 | 博西华电器（江苏）有限公司 | Kitchen scale |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100549634C (en) | 2009-10-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101893472B (en) | Method and device for measuring tonnage of automobile | |
| CN1808079A (en) | Soft blanket type weighing device and weighing method | |
| CN200979453Y (en) | A weight measurement detector with controllable double hydraulic load mechanism | |
| CN207379598U (en) | A kind of sound double duty truck weighing system | |
| CN2600801Y (en) | Quartz piezoelectric force cell device | |
| CN112414528A (en) | Narrow strip elastic plate type dynamic weighing method and system | |
| CN109374160A (en) | A kind of rail stress sensor for the detection of rail truck Super leaning load | |
| US6269688B1 (en) | Apparatus and method for testing tires | |
| CN104947582A (en) | Intelligent weighing support improved based on bridge plate-type support | |
| Cole et al. | A capacitative strip sensor for measuring dynamic type forces | |
| CN209069464U (en) | A kind of rail stress sensor for the detection of rail truck Super leaning load | |
| CN208621158U (en) | A kind of not parking overload detection system of portable dot matrix | |
| CN1271394C (en) | Vehicle overload detecting system and its running method | |
| CN2919206Y (en) | Automatic weighting detecting and monitoring system of road vehicles | |
| CN85108836A (en) | Measurement is contained in the method and apparatus of load net weight on the vehicle | |
| CN103308129A (en) | Portable weighing platform and truck scale | |
| CN203116829U (en) | Dynamic vehicle weighing device | |
| CN208520454U (en) | Bar shaped stress-type dynamic vehicle weighing device | |
| CN201021186Y (en) | Jack type bodywork weighing device | |
| CN219495422U (en) | Novel vehicle-mounted dynamic weighing device | |
| CN221173589U (en) | Ultrafiltration off-site law enforcement weighing sensor | |
| CN207407978U (en) | A kind of vehicle weighing device | |
| CN2519905Y (en) | Car axle weighing balance | |
| CN2663944Y (en) | Dynamic electronic automobile scale | |
| CN214224318U (en) | Weighing device for dynamic weighing of road vehicles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |