WO2008059920A1 - Système de mesure de matériau - Google Patents
Système de mesure de matériau Download PDFInfo
- Publication number
- WO2008059920A1 WO2008059920A1 PCT/JP2007/072175 JP2007072175W WO2008059920A1 WO 2008059920 A1 WO2008059920 A1 WO 2008059920A1 JP 2007072175 W JP2007072175 W JP 2007072175W WO 2008059920 A1 WO2008059920 A1 WO 2008059920A1
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- WO
- WIPO (PCT)
- Prior art keywords
- weighing
- time
- stage
- correction
- value
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/04—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight
- G01G13/06—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism involving dribble-feed means controlled by the weighing mechanism to top up the receptacle to the target weight wherein the main feed is effected by gravity from a hopper or chute
Definitions
- the present invention relates to an improvement of a material measuring system for measuring a material by a certain amount by supplying a material such as a granular material from a hot rod to a measuring device.
- This multi-stage weighing is based on the mass measured in real time in the load cell by supplying a large amount of material by increasing the degree of opening of the material outlet at the initial stage of supply! The degree of opening is reduced, and the degree of opening is small immediately before the supply is stopped, so there is not much error due to the head value. Therefore, with this weighing method, quick weighing and weighing can be realized by the initial large weighing, and V and weighing can be realized with high accuracy by the final small weighing.
- the target supply mass switching value is set as a set value in each stage. At each stage, whether or not the supply amount has reached this set value is measured and reached. Control to switch to the next stage is performed.
- Patent Document 1 Japanese Patent Publication No. 6-12288
- the present invention has been proposed in view of such circumstances, and an object of the present invention is to provide a material weighing system capable of performing multistage weighing accurately and quickly.
- optimization The purpose is to enable safe and reliable measurement without failure even when measuring to the fullest extent possible.
- the material weighing system according to claim 1 is a material weighing system for weighing a material by a certain amount by supplying the material to a measuring device from a material discharge port of Hotsuba.
- a supply mass switching value is set, and each time the mass measured by a measuring instrument equipped with a mass measuring means reaches the supply mass switching value, the process proceeds to the next stage, and the amount of material fall per unit time is set in stages.
- the weighing system for each material, except for the first stage includes the unstable time when the amount of fall per unit time after the transition from the previous stage is not stable. That anxiety
- the target weighing time for each stage with the time value as the target lower limit value is prepared in the storage unit, the weighing time measuring means for measuring the actual weighing time in each stage weighing, and after one batch weighing is completed
- a set value correcting means for correcting the supply mass switching value for each stage except for the first stage by a predetermined algorithm based on the target weighing time and the actual weighing time.
- the amount of material falling per unit time is reduced by controlling the opening degree of the material discharge port of the hot bar storing the material. It is characterized by that.
- the material weighing system according to claim 3 is characterized in that the set value correction means optimizes the supply mass switching value at each stage by a plurality of corrections.
- the set value correction means includes a standard correction based on a difference between the actual measurement time and the target measurement time, and the actual measurement time with the target measurement time and a predetermined threshold value.
- the special feature is that any one of the corrections that are larger than the standard correction in the event of a deviation may be executed!
- the set value correction means includes the target weighing time and the actual weighing. Based on the time and the supply mass switching value, the supply mass switching value at each stage except the first stage is corrected by a predetermined algorithm, so the supply mass switching value at each stage is set to the target weighing time. It can be corrected so that the supply mass switching value at each stage can be optimized for quick and accurate weighing.
- FIG. 1 Schematic diagram showing the flow of multi-stage weighing.
- A is large weighing
- (b) is medium weighing
- (c) is small weighing
- (d) is small weighing stopped It shows the state of the hour.
- FIG. 2 A diagram for explaining the switching point, (a) graphing the relationship between the weight of the load cell and time, and (b) a diagram for explaining the unstable time zone at the time of switching. is there.
- FIG. 3 is a block diagram of the main part of the system of the present invention.
- FIG. 4 is a flowchart showing a schematic flow of the system of the present invention.
- FIG. 5 is a flowchart showing the operation of the small measurement setting correction of the system of the present invention.
- FIG. 6 is a flowchart showing the operation of medium weighing setting correction of the system of the present invention. Explanation of symbols
- FIG. 1 is a conceptual diagram showing multi-stage weighing employed in the material weighing system of the present invention.
- the hopper 10 which is a feeder, shows a material discharge port provided with a slide shutter! /, And may have a structure provided with a flap damper! /.
- 10 is a hono that stores material P
- 11 is a slide shutter provided at the material discharge port of the hopper
- 12 is a servo cylinder for controlling the opening of the material discharge port
- 1 is a mass measuring means.
- (Load cell) 2 is a measuring instrument.
- the mass measuring means is not limited to the load cell 2, and a differential transformer or a frequency system may be used.
- Figure 1 is a schematic diagram showing the flow of multi-stage weighing.
- (A), (b), and (c) show the material supply at each stage of large weighing, medium weighing, and small weighing, respectively.
- (D) shows when the measurement is stopped.
- the target set value for stopping the supply of the small measurement needs to use a value that takes into consideration the head amount generated at the end of the small measurement from the final target value (measurement value).
- the amount of this drop has been empirically obtained, although there is an error if the material and equipment are the same and the degree of opening of the material outlet at the time of small weighing is the same.
- Measured value In this specification, accurate multi-stage weighing can be carried out using the set value of the final stage considering the difference between the head value and the head amount).
- FIG. 2 is a diagram for explaining the switching points of each stage of multi-stage weighing.
- (A) is a graph showing the relationship between the measured mass of the load cell and the elapsed time
- (b) is a graph.
- FIG. 6 is a diagram schematically showing the relationship between the degree of opening of the material discharge port and the measured mass in order to explain the unstable time zone at the time of switching.
- WO is the final target value
- W1 is the switching target value from the large weighing stage to the medium weighing stage
- W2 is the switching target value from the medium weighing stage to the small weighing stage
- W3 is the head. This is the final target value considering the value.
- W12 is the supply weight switching value at the intermediate weighing stage calculated by W2—W1 (measuring target value at medium weighing)
- W23 is the supply weight switching value at the small weighing stage calculated at W3—W2 (weighing at the small weighing stage) Target value).
- Fig. 2 (a) for the sake of illustration, the force representing the measurement of each stage in a straight line, and in each stage except the first stage, it is unstable that is affected by the previous stage as described above.
- the weighing at each stage except for the first stage included the mass values Wdl and Wd2 in the unstable time zone. It will be a thing.
- Wd3 is the head drop.
- the purpose of the present invention is to enable accurate and rapid multi-stage weighing, in which a large part of the material can be weighed by the first stage of large scale and It is necessary to enable accurate head compensation by small weighing. For this reason, in the system of the present invention, every time one batch weighing is completed, the supply mass switching values W12 and W23 corresponding to each stage except the first stage are set. By making corrections, the optimum supply mass switching values W12 and W23 can be reached step by step so that the optimum measurement for the above purpose can be achieved.
- FIG. 3 is a block diagram of the main part of the system of the present invention
- Fig. 4 is a schematic flowchart of the system of the present invention.
- Figures 5 and 6 show the flow chart of the set value correction logic for small weighing and medium weighing.
- the system of the present invention performs a batch of multi-stage weighing control step S1 and a set value correction step S2 for correcting the supply mass switching value at each subsequent stage (see FIG. 4).
- This system is equipped with a weighing processor 20 for execution.
- the weighing processing device 20 reads the weighing mass from the load cell 2 associated with the multi-stage weighing, and the opening degree control means 21 for controlling the opening degree of the slide shirt 11 and the weighing for measuring the actual weighing time at each stage. Based on the time measurement means 22 and the target weighing time, measured actual weighing time and various threshold values described later, a new supply for the next batch weighing is performed by correcting the supply mass switching value used most recently. And a set value correction means 23 for calculating the mass switching value.
- the storage unit 24 switches the target measurement time, which is defined as the target lower limit value by the unstable time value at each stage obtained by experiments, and the supply mass at each stage.
- the initial value, correction value for each batch, drop value, and other threshold values are stored.
- the initial value of the supply mass switching value at each stage may be input by setting operation means (not shown).
- the weighing processor 20 performs processing such as control of the degree of opening! / Of the slide shutter 11 and correction of set values by a CPU (not shown) and various programs.
- the processing may be executed by individual devices each having a CPU.
- the correction is based on the target weighing time stored in the storage unit for each stage of small weighing and medium weighing, the actual weighing time measured in multi-stage weighing, and the supply mass switching value used in the most recent weighing. And based on the following conditions: In the following, explanation will be given by exemplifying the predetermined values for the target weighing time and threshold.
- the medium weighing target weighing time is 3 seconds and the small weighing target weighing time is 4 seconds. If both the actual weighing time for weighing is 0, even if the actual weighing time for small weighing is 4 seconds or more, if it is less than 10 seconds, the total weighing time is less than 10 seconds, so the supply weight for small weighing is switched. No correction is made to reduce the value to the target weighing time. If the actual weighing time for large weighing is 0 and the actual weighing time for small weighing has reached the target weighing time, the actual weighing time for medium weighing will be less than 6 seconds even if it is 3 seconds or longer. If there is, the total will be less than 10 seconds, so do not make a correction to reduce the supply weight switching value for medium weighing to the target weighing time! /.
- the correction amount (mass value to be reduced with respect to the latest supply mass switching value) is intended to bring the actual weighing time closer to the target weighing time. In principle, it is calculated, but if the difference is larger than a predetermined threshold, a correction amount larger than the standard correction amount is adopted. In other words, when making corrections, use either the standard correction or a larger correction. In this case, the upper limit for standard correction can be the same as the threshold used in (2), and other values can be used. It ’s easy to select.
- correction amount is exemplified as follows. In the following, as correction for small weighing, standard correction is corrected as 1, correction with large correction amount is corrected as 2, correction for increasing is described as correction 3, standard correction is corrected as medium measurement, and large correction is as 4 Is described as correction 5, and the correction to be increased is described as correction 6. In this example, the amount of corrections 3 and 6 to be increased is calculated using the same calculation formula as the standard correction, but other formulas may be used.
- Correction amount of Correction 1 (Actual weighing time Target weighing time) * Correction coefficient a ' ⁇ ⁇ (Equation 1)
- Correction amount of Correction 3 (Actual weighing time Target weighing time) * Correction factor a, ⁇ (Equation 3)
- Correction amount of Correction 4 (Actual weighing time Target weighing time) * Correction factor b ⁇ ⁇ ⁇ (Equation 4)
- Correction amount of Correction 5 Actual weighing time * Correction factor b, ⁇ (Formula 5)
- Correction amount of Correction 6 (Actual measurement time Target measurement time) * Correction coefficient b, ⁇ (Equation 6)
- correction coefficients a and b may be determined in advance based on the supply capacity per unit time. If the supply capacity for small weighing is 100 g / sec and the feeding capacity for medium weighing is 500 g / sec, and if the correction is performed n times in consideration of the condition (1), then small, medium
- the correction factors a and b for weighing can be defined as 100 / n and 500 / n.
- n is a value of 2 or more, preferably 5-30.
- the basis for performing multiple corrections is due to variations in measurement accuracy of the system and hunting (disturbance due to disturbance). Variations due to weighing accuracy are due to variations in the actual weighing time due to measurement accuracy of the weighing time (data acquisition cycle, etc.) and due to variations in machine accuracy of the hopper 10 and slide shutter 11, etc. Experiments have confirmed that weighing errors of up to several times occur. In other words, for example, when weighing control is performed by reducing the supply mass switching value from 200 g to 190 g by 190 g, the actual weighing result is 180 There is a risk of becoming g. In addition, it is desirable to make multiple corrections in order to perform safer weighing in consideration of unpredictable situations such as hunting.
- the correction amount of correction 2 (correction 5) above is applied when the actual measurement time is significantly different from the target measurement time. As can be seen from the calculation formula, As does not include the target weighing time. This is to allow a correction amount larger than the correction 1 (correction 4) that is performed when the actual weighing time approaches the target weighing time. Since the correction factor is determined on the assumption that correction is performed multiple times, even if the target weighing time is not included in the factor for calculating the correction amount, it can be adjusted to a safe correction amount.
- the calculation formula is not limited to the above formula (correction amount of correction 2)> (correction amount of correction 1),
- Correction amount of correction 1 (actual weighing time target weighing time) * correction coefficient al
- Correction amount of correction 2 (actual weighing time target weighing time) * correction coefficient a2
- Correction amount of correction 4 (actual weighing time target weighing time) * correction coefficient bl
- Correction amount of correction 5 (actual weighing time target weighing time) * correction coefficient b2
- FIG. 5 and FIG. 6 are flowcharts showing processing operations for correcting each set value of small weighing and medium weighing in the system of the present invention. These processing operations are performed by determining and selecting correction 1 to 3 (correction 4 to 6 for medium weighing) or no correction by checking the actual weighing time threshold. Hereinafter, description will be made sequentially.
- the correction amount is obtained from the calculation formula for correction 1 (Equation 1) and the supply mass switching value is corrected.
- the correction amount is obtained from the calculation formula for correction 3 (Equation 3) and the supply mass switching value is corrected.
- the correction amount is obtained from the calculation formula for correction 4 (Equation 4) and the supply mass switching value is corrected.
- the correction amount is obtained from the calculation formula for correction 6 (Equation 6) and the supply mass switching value is corrected.
- the set value correction means 23 executes the algorithm for correcting the set value in a plurality of times so that the supply mass switching value at each stage approaches the target weighing time. Accurate and quick multi-step weighing can be performed safely and reliably.
- the standard correction based on the difference between the actual weighing time and the target weighing time (correction 1, correction 3), and the standard correction when the actual weighing time deviates from the target weighing time by a predetermined threshold or more. Therefore, it is possible to execute either! / Or the difference between the correction (correction 2, correction 5) and so on, so that even if there is a large deviation, the optimization can be achieved at an early stage.
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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CN2007800426197A CN101606046B (zh) | 2006-11-17 | 2007-11-15 | 材料计量系统 |
US12/312,557 US8356729B2 (en) | 2006-11-17 | 2007-11-15 | Material metering system |
Applications Claiming Priority (2)
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JP2006310961A JP5124126B2 (ja) | 2006-11-17 | 2006-11-17 | 材料計量システム |
JP2006-310961 | 2006-11-17 |
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WO2008059920A1 true WO2008059920A1 (fr) | 2008-05-22 |
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PCT/JP2007/072175 WO2008059920A1 (fr) | 2006-11-17 | 2007-11-15 | Système de mesure de matériau |
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US (1) | US8356729B2 (ja) |
JP (1) | JP5124126B2 (ja) |
CN (1) | CN101606046B (ja) |
WO (1) | WO2008059920A1 (ja) |
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JP2010063643A (ja) * | 2008-09-11 | 2010-03-25 | Konica Minolta Technoproducts Co Ltd | 洗米装置 |
JP4860777B1 (ja) * | 2011-04-28 | 2012-01-25 | 三興コンピューターソフトウェア株式会社 | 粉体質量計量装置の計量制御方法 |
CN107444892B (zh) * | 2016-05-31 | 2022-04-26 | 藤原酿造机械株式会社 | 酱油原料的计量供给装置及酱油原料的计量供给方法 |
JP2019006438A (ja) * | 2017-06-22 | 2019-01-17 | 株式会社高垣製作所 | バタフライバルブ制御システム及びバタフライバルブ制御方法 |
CN108955850B (zh) * | 2018-07-06 | 2019-08-27 | 川田机械制造(上海)有限公司 | 用于计量机的自动获取计量预设值的方法 |
US10948336B2 (en) * | 2018-08-30 | 2021-03-16 | A. J. Antunes & Co. | Automated condiment dispensing system with precisely controlled dispensed quantities |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082818A (ja) * | 1983-10-13 | 1985-05-11 | Mitsubishi Chem Ind Ltd | 粉粒体の自動計量方法 |
JPS63279120A (ja) * | 1987-05-11 | 1988-11-16 | Kamachiyou Seiko Kk | 計量機の供給量制御装置 |
JPH03248024A (ja) * | 1990-02-26 | 1991-11-06 | Yamato Scale Co Ltd | 定量秤の計量制御装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2147111B (en) * | 1983-09-28 | 1987-08-05 | Yamato Scale Co Ltd | Combination weighing with volumetric metering |
CN1028182C (zh) * | 1992-04-04 | 1995-04-12 | 中国石油化工总公司 | 一种料斗秤称量的控制方法及其设备 |
JPH0612288A (ja) | 1992-06-29 | 1994-01-21 | Hitachi Ltd | 情報処理システム及びその監視方法 |
JP3248024B2 (ja) * | 1993-04-20 | 2002-01-21 | トキコ株式会社 | 渦流量計 |
US5423455A (en) * | 1993-06-25 | 1995-06-13 | Acrison, Inc. | Materials feeding system with level sensing probe and method for automatic bulk density determination |
EP1217343A1 (en) * | 1994-08-26 | 2002-06-26 | Anritsu Corporation | Combination weighing apparatus |
US6161733A (en) * | 1998-03-30 | 2000-12-19 | King; Kenyon M. | Shutter valve dispenser |
JP3706331B2 (ja) * | 2001-11-06 | 2005-10-12 | 大和製衡株式会社 | 粉粒体用の容積式フィーダ及び粉粒体組合せ秤 |
DE10222167A1 (de) * | 2002-05-20 | 2003-12-04 | Generis Gmbh | Vorrichtung zum Zuführen von Fluiden |
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2006
- 2006-11-17 JP JP2006310961A patent/JP5124126B2/ja active Active
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2007
- 2007-11-15 US US12/312,557 patent/US8356729B2/en active Active
- 2007-11-15 CN CN2007800426197A patent/CN101606046B/zh active Active
- 2007-11-15 WO PCT/JP2007/072175 patent/WO2008059920A1/ja active Search and Examination
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6082818A (ja) * | 1983-10-13 | 1985-05-11 | Mitsubishi Chem Ind Ltd | 粉粒体の自動計量方法 |
JPS63279120A (ja) * | 1987-05-11 | 1988-11-16 | Kamachiyou Seiko Kk | 計量機の供給量制御装置 |
JPH03248024A (ja) * | 1990-02-26 | 1991-11-06 | Yamato Scale Co Ltd | 定量秤の計量制御装置 |
Also Published As
Publication number | Publication date |
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CN101606046A (zh) | 2009-12-16 |
CN101606046B (zh) | 2013-11-27 |
US20100051643A1 (en) | 2010-03-04 |
US8356729B2 (en) | 2013-01-22 |
JP5124126B2 (ja) | 2013-01-23 |
JP2008128685A (ja) | 2008-06-05 |
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