CN101598592A - The Weighing method that energy real-Time Compensation belt tension changes - Google Patents
The Weighing method that energy real-Time Compensation belt tension changes Download PDFInfo
- Publication number
- CN101598592A CN101598592A CNA2008101089587A CN200810108958A CN101598592A CN 101598592 A CN101598592 A CN 101598592A CN A2008101089587 A CNA2008101089587 A CN A2008101089587A CN 200810108958 A CN200810108958 A CN 200810108958A CN 101598592 A CN101598592 A CN 101598592A
- Authority
- CN
- China
- Prior art keywords
- belt
- weight
- belt tension
- electronic balance
- electric signal
- 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.)
- Pending
Links
Images
Abstract
The invention discloses the Weighing method that a kind of energy real-Time Compensation belt tension changes, above the following belt of belt feeder, place weight; Be applied to electric pressure signal on the belt with the sensor weight; The electric pressure signal that records with the weighing instrument read sensor of belted electronic balance, and try to achieve original pressure electric signal F
0(t
0) and real-time pressure electric signal F
0(t
n) ratio, the weight of material electric signal that this ratio and belted electronic balance load sensor are recorded multiplies each other, again the actual measurement weight after weighing instrument is handled the belt tension changing factor that is eliminated.The present invention is by the variation of force value in different time on the following belt of measuring fixing weight and being applied to belt feeder, and the penalty coefficient that finds belt tension to change changes the influence that brings thereby eliminate belt tension, improves the weighing precision of belted electronic balance.
Description
Technical field
The present invention relates to the Weighing method that a kind of energy real-Time Compensation belt tension changes.
Background technology
Belted electronic balance is the equipment that can carry out the dynamic real-time metering when band conveyor transmits material in enormous quantities to material, because of it installs and uses easy, the reading all trades and professions that are widely used in directly perceived.But the weighing precision of existing belted electronic balance can't maintain a long-term stability after demarcating (verification), can only be used for the occasions lower such as enterprises examination to accuracy requirement, import and export harbour, coal-burning power plant etc. at bulk goods and require the enterprise of accurate measurement and the Belt Scales that department also must install the expensive hundreds thousand of units of a cover more in a large number, once a day even carry out physical goods inspection every day for several times, expend a large amount of human and material resources and financial resources, and the belted electronic balance of a cover only needs tens thousand of units.Why the precision of existing belted electronic balance can not maintain a long-term stability, both at home and abroad the consistent random variation of thinking to come from belt tension (essence is elasticity coefficient) of industry.
As shown in Figure 1, on the belt feeder material 2 of weighing section across belt 1 with its weight transfer on the carrying roller 3 and scale frame 4 of belted electronic balance, scale frame 4 changes into corresponding electric signal with the gravity that affords by gage probe 5, and this electric signal is sent into the weight that weighing instrument can show material after treatment.And the bounce f's of gravity P that the actual power F that affords of gage probe (being the scale frame) is the weighing section material and belt (thereby because stressed generation deformation generation) is poor: F=P-f, the size of this bounce f depends on that not only suffered gravity P depends on that also belt tension is the elasticity coefficient of belt.Therefore:
F(t)＝P(t)-f(t)
The belt weight of weighing section be zero point tare weight can remove so do not consider by school zero.Wherein, bounce f (t)=P (t) K (t), K in the formula (t) are that random variation is the stochastic variable of time along with the variation of environment temperature, humidity, belt water cut and wear intensity or the like factor for the elasticity coefficient of belt.Following formula is convertible into following formula:
F (t)=P (t)-P (t) K (t) is promptly:
F(t)＝P(t)[1-K(t)]
This shows: because the randomness of K (t), even under the constant situation of P (t), F (t) remains at random.So the random variation of belt tension (being elasticity coefficient K (t)) causes the precision of belted electronic balance not maintain a long-term stability.
Summary of the invention
The purpose of this invention is to provide the Weighing method that a kind of energy real-Time Compensation belt tension changes,, improve weighing precision to eliminate the weighing error that the belt tension changing factor causes.
The present invention is achieved in that the following belt at belt feeder is a weight of placing fixed weight above the return phase; Detect weight with sensor and be applied to electric pressure signal on the belt; The electric pressure signal that records with the weighing instrument read sensor of belted electronic balance, and try to achieve original pressure electric signal F
0(t
0) and real-time pressure electric signal F
0(t
n) ratio, i.e. λ=F
0(t
0)/F
0(t
n), the weight of material electric signal that this ratio λ and belted electronic balance gage probe are recorded multiplies each other, and promptly obtains the weight of material electric signal after the compensation, again the actual measurement weight after the belted electronic balance weighing instrument is handled the belt tension changing factor that is eliminated.
The present invention is based on following principle realization: as shown in Figure 1, the weight that sensor obtains is applied to the pressure F on the belt
0(t)=P
0-f
0(t)=P
0-P
0K (t)=P
0(1-K (t)).At time t
0With t
n, suppose P (t
0)=P (t
n)=P promptly obtains:
F(t
0)＝P〔1-K(t
0)〕 F(t
n)＝P〔1-K(t
n)〕
F
0(t
0)＝P
0〔1-K(t
0)〕 F
0(t
n)＝P
0〔1-K(t
n)〕
F (t
0), F (t
n) record by belted electronic balance; F
0(t
0), F
0(t
n) value record by being used for detecting the load sensor that belt tension changes.
If t
0Be the nominal time, write down F (t with instrument this moment
0) value just represented weight P (this promptly demarcates or verification operation); Write down and preserve F again by instrument
0(t
0) value, t at any time
nAllow instrument to detected F (t
0) and F
0(t
n) value does following computing:
That is: F (t
n) F
0(t
0)/F
0(t
n)=F (t
0)=P (1-K (t
0))
The material P of weight just can show same value F (t in the different time in instrument like this, equally
0).For different P values, because coefficient (1-K (t
0)) constant, F just becomes the linear function of P and no longer has randomness, thereby has guaranteed the long-term stability of belt conveyer scale weighing precision.
Be the penalty coefficient λ that belt tension changes.
The present invention is by the variation of force value in different time on the following belt of measuring fixing weight and being applied to belt feeder, and the penalty coefficient that finds belt tension to change changes the influence that brings thereby eliminate belt tension, improves the weighing precision of belted electronic balance.
Description of drawings
Fig. 1 is a principle of work synoptic diagram of the present invention.
Fig. 2 is a pick-up unit structural representation of the present invention.
Fig. 3 is along A-A line cut-away view among Fig. 2.
Fig. 4 is the present invention's flow diagram of weighing.
Embodiment
As shown in Figure 1, place a weight above the following belt 8 of belt feeder, this weight is a pinch roller 7; Belt tension detecting sensor 6 is set, is used for measuring weight and is applied to electric pressure signal on the belt; Roller 8 can be positioned on the belt by guide piece, concrete structure as shown in Figures 2 and 3, mounting bracket 12 is provided with the vertically-guided groove 14 that pinch roller rotating shaft 11 is moved up and down, two detecting sensors 6 are fixed on the mounting bracket 12 of pinch roller top by screw 10, pinch roller 7 both sides are provided with the pull bar 9 that is rotationally connected with pinch roller rotating shaft 11, this detecting sensor 6 can adopt the shear beam sensor, and each pull bar 9 upper end is fixed on the pull-type annex of detecting sensor 6.Pinch roller rotating shaft 11 two ends are fixed with is equipped with balancing weight 13.The electric signal that sensor 6 records is that pair of rollers belt applied pressure is roller weight P
0Bounce f with belt (thereby because stressed generation deformation generation)
0Difference F
0=P
0-f
0Electric signal; As shown in Figure 2, with of weighing instrument input port 2 inputs of this electric signal, get original pressure electric signal F respectively by belted electronic balance
0(t
0) and real-time pressure electric signal F
0(t
n), ask its ratio, i.e. λ=F
0(t
0)/F
0(t
n), the electric pressure signal F (t) that the gage probe of this ratio λ and belted electronic balance is recorded multiplies each other, again through the actual measurement weight after eliminating the belt tension changing factor of calculating of belted electronic balance weighing instrument.
Claims (1)
1, can real-Time Compensation the Weighing method that changes of belt tension, it is characterized in that: the weight of above the following belt of belt feeder is return phase, placing fixed weight; Detect weight with the belt tension detecting sensor and be applied to electric pressure signal on the belt; The electric pressure signal that records with the weighing instrument read sensor of belted electronic balance, and try to achieve original pressure electric signal F
0(t
0) and real-time pressure electric signal F
0(t
n) ratio, i.e. λ=F
0(t
0)/F
0(t
n), the weight of material electric signal that this ratio λ and belted electronic balance load sensor are recorded multiplies each other, and promptly obtains the weight of material electric signal after the compensation, again the actual measurement weight after the belted electronic balance weighing instrument is handled the belt tension changing factor that is eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101089587A CN101598592A (en) | 2008-06-04 | 2008-06-04 | The Weighing method that energy real-Time Compensation belt tension changes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101089587A CN101598592A (en) | 2008-06-04 | 2008-06-04 | The Weighing method that energy real-Time Compensation belt tension changes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101598592A true CN101598592A (en) | 2009-12-09 |
Family
ID=41420109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101089587A Pending CN101598592A (en) | 2008-06-04 | 2008-06-04 | The Weighing method that energy real-Time Compensation belt tension changes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101598592A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065340A1 (en) * | 2010-11-18 | 2012-05-24 | 赛摩电气股份有限公司 | High precision belt weighing device |
| CN103398767A (en) * | 2013-08-19 | 2013-11-20 | 南京三埃工控股份有限公司 | Correction method for measurement result of belt weigher |
| CN105300486A (en) * | 2015-03-25 | 2016-02-03 | 承德市广丰仪表有限公司 | High-precision electronic belt scale |
| CN112050916A (en) * | 2020-06-22 | 2020-12-08 | 华东理工大学 | Method for measuring total mass of material based on vibration frequency of weighing carrier roller |
| CN113932894A (en) * | 2021-10-14 | 2022-01-14 | 卢宗奎 | Segmented zero-point model-touching belt scale based on tension detection and compensation |
| CN114396995A (en) * | 2022-01-14 | 2022-04-26 | 赛摩电气有限公司 | Weighing device and metering method of belt feeder |
-
2008
- 2008-06-04 CN CNA2008101089587A patent/CN101598592A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012065340A1 (en) * | 2010-11-18 | 2012-05-24 | 赛摩电气股份有限公司 | High precision belt weighing device |
| CN103398767A (en) * | 2013-08-19 | 2013-11-20 | 南京三埃工控股份有限公司 | Correction method for measurement result of belt weigher |
| CN105300486A (en) * | 2015-03-25 | 2016-02-03 | 承德市广丰仪表有限公司 | High-precision electronic belt scale |
| CN105300486B (en) * | 2015-03-25 | 2017-08-11 | 承德市广丰仪表有限公司 | A kind of high-precision electronic belt scale |
| CN112050916A (en) * | 2020-06-22 | 2020-12-08 | 华东理工大学 | Method for measuring total mass of material based on vibration frequency of weighing carrier roller |
| CN112050916B (en) * | 2020-06-22 | 2021-11-30 | 华东理工大学 | Method for measuring total mass of material based on vibration frequency of weighing carrier roller |
| CN113932894A (en) * | 2021-10-14 | 2022-01-14 | 卢宗奎 | Segmented zero-point model-touching belt scale based on tension detection and compensation |
| CN114396995A (en) * | 2022-01-14 | 2022-04-26 | 赛摩电气有限公司 | Weighing device and metering method of belt feeder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101598592A (en) | The Weighing method that energy real-Time Compensation belt tension changes | |
| CA2883433C (en) | System and methods for belt conveyor weighing | |
| CN103090778B (en) | A kind of strain-type Linear Double is to large displacement sensor and detection method thereof | |
| US5338901A (en) | Conveyor belt weigher incorporating two end located parallel-beam load cells | |
| CN102506983A (en) | Weighing error automatic compensation method of vehicle scale | |
| CN201993154U (en) | Self-checking electronic belt conveyor scale | |
| CN201218748Y (en) | Electronic belt conveyor scale capable of real-time compensation for belt tension change | |
| CN201078745Y (en) | Real-time detection apparatus for upper bearing type belt tension variety | |
| CN104121970B (en) | A kind of signal processing method of belted electronic balance | |
| CN107091677B (en) | Error compensation method and belt scale based on error compensation | |
| CN106248189A (en) | Without carrying out weighing device and the method for level correction | |
| Aleksandrović et al. | Analysis of belt weigher accuracy limiting factors | |
| CN101666673A (en) | Panel bearing type electronic belt scale | |
| CN201078742Y (en) | Real-time detection apparatus for lower bearing type belt tension variety | |
| CN103017872A (en) | Dynamic metering device | |
| CN201561794U (en) | Flat plate bearing type electronic belt scale | |
| CN201844872U (en) | Differential strain type suspension type belt scale with optical fiber Bragg grating | |
| Živanić et al. | The analysis of influential parameters on calibration and feeding accuracy of belt feeders | |
| CN2615652Y (en) | Leather belt conveyor metering device based on dynamic measurement | |
| CN101187624B (en) | Rotary pair dynamic friction detection system | |
| CN101178332A (en) | Probe type friction force sensor | |
| CN203132680U (en) | Digital indication scale calibrating device | |
| CN103438965B (en) | Hinge type storage tank Weighing device | |
| AU676595B2 (en) | Temperature-compensated belt scale | |
| CN206362429U (en) | A kind of fully-automatic intelligent digital electronic belt weigher device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091209 |