JPH0344255B2 - - Google Patents
Info
- Publication number
- JPH0344255B2 JPH0344255B2 JP58054660A JP5466083A JPH0344255B2 JP H0344255 B2 JPH0344255 B2 JP H0344255B2 JP 58054660 A JP58054660 A JP 58054660A JP 5466083 A JP5466083 A JP 5466083A JP H0344255 B2 JPH0344255 B2 JP H0344255B2
- Authority
- JP
- Japan
- Prior art keywords
- subtraction
- value
- target weight
- hopper
- tolerance
- 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.)
- Expired - Lifetime
Links
- 238000005303 weighing Methods 0.000 claims description 22
- 206010000210 abortion Diseases 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000007792 addition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 235000008694 Humulus lupulus Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Description
＜産業上の利用分野＞
この発明は、単位重量にバラツキのある被計量
物を目標重量あるいはそれに近い値にする計量装
置に関するものである。
＜従来技術＞
従来、上記のように単位重量にバラツキのある
被計量物を目標重量にする場合に、どうしても目
標重量との間に誤差が生じるので、この誤差をで
きるだけ少なくするために、各種の計量装置が考
えられている。
従来のこの種の計量装置では、第１図に示すよ
うに複数の計量ホツパa1〜aoに被計量物を順次供
給し、各計量ホツパa1〜aoごとに設けた計量器b1
〜boによつて、計量ホツパに収納された被計量物
をそれぞれ計量する。そして、各計量器b1〜boの
計量値を組合せ設定回路ｃに入力して、すべての
組合せ（即ち2n個の組合せ）ごとの組合せ重量を
演算し、演算によつて得られたすべての組合せ重
量のうち、目標重量を超え、且つ目標重量との差
が最も小となる計量ホツパの組合せを選定する
（例えば特開昭57−94617号、特開昭57−149923
号）。このようにして選定された組合せの複数の
計量ホツパ内の被計量物を、集合シユートなどに
排出してひとまとめにする。
＜本発明が解決しようとする問題点＞
しかして、従来この種の計量装置では、このよ
うに各計量値をすべての組合せで加算し、すべて
記憶し、この組合せたすべての加算結果を比較器
で目標重量と比較していたため、
(イ) すべての組合せ加算を演算し、そして、すべ
ての組合せ加算結果を目標重量と比較して、最
も近いものを選ぶので、一回一回の組合せ選定
における演算処理が厖大となり、多大な時間を
要する。しかも、この種の計量装置では、高速
で次々と組合せを行なわなければならないの
で、一回一回の組合せ演算における多大な時間
は、積み重ねられて厖大な時間の浪費となり、
組合せの効率が著しく劣化する。
(ロ) すべての組合せのうちから最も目標重量に近
いものを選ぶため、例えば一個のホツパのみ、
あるいは２個のホツパだけの組合せによつて目
標重量に比較的近い重量が存在しても、最も目
標重量に近い例えば３個、あるいは４個の組合
せが選定されてしまうため、必然的に組合せ数
が多くなつてしまう。
しかるに、組合せに選ばれたホツパのシヤツ
タ機構が開閉して被計量物が排出され、新たに
被計量物がホツパに供給されるから、組合せ数
が多い程、ホツパのシヤツタ機構などの痛みが
激しくなり、寿命が短くなる。
また、ホツパから被計量物を排出し、次に充
填するのに時間を要するから、組合せ数が多い
程、次の組合せ選定に参加できるホツパ数が減
り、良い組合せが得にくくなる。
また、計量器そのものの計量誤差は避けられ
ないから、組合せ数が多い程、計量誤差が累積
される。
などの問題点があつた。
本発明は、前記これらの問題点を解決した計量
装置を提供することを目的とする。
＜前記問題点を解決するための手段＞
前記問題点を解決するために本発明の計量装置
では、
被計量物を計量する複数の計量器と、
前記各計量器からの計量値を、被計量物が収容
された各ホツパに対応づけて記憶する計量値記憶
手段と、
目標重量を第１の目標重量として設定する第１
の目標重量設定手段と、
前記目標重量から前記計量値記憶手段に記憶さ
れた少なくとも１つのホツパに対応した計量値を
減算した値を第２の目標重量として、前記第１の
目標重量の代わりに更新する目標重量更新手段
と、
前記計量値記憶手段に記憶された計量値を、前
記第１の目標重量設定手段に設定された第１の目
標重量あるいは前記目標重量更新手段によつて更
新された第２の目標重量から順次減算する減算手
段と、
前記減算手段の減算結果が零もしくは負か否か
を判断し、零の場合には、前記計量値による前記
減算手段の順次減算の打切る打切り信号を出力す
る極性判定手段と、
前記第１の目標重量を上回る第１の上限許容値
を設定する第１の上限許容値設定手段と、
該第１の上限許容値を更に上回る第２の上限許
容値を設定する第２の上限許容値設定手段と、
前記減算結果が負の場合に、該減算結果と前記
第１の上限許容値とを比較して、第１の上限許容
値以内の場合には、前記計量値による前記減算手
段の順次減算を打切る打切り信号を出力し、第１
の許容値を超えている場合には、超過信号を出力
する第１の比較手段と、
前記第１の比較手段からの前記超過信号を受け
ると、前記減算結果と前記第２の上限許容値とを
比較して、前記第２の上限許容値以内の場合に
は、予め決められた目標重量更新段数までに前記
順次減算に応じて最も前記第１の上限許容値によ
り近い減算結果を更新記憶し、該目標重量更新段
数までの減算終了時に、前記計量値による前記減
算手段の順次減算を打切る打切り信号を出力する
第２の比較手段と、
前記極性判定手段、前記第１の比較手段、第２
の比較手段からの前記打切り信号が出力されたと
き、前記第１の目標重量からの減算結果における
減算に参加した前記計量値に対応するホツパ、あ
るいは、目標重量更新最終段数終了時での更新記
憶された第２の上限許容値内の減算及び前記目標
重量更新における減算に参加した前記計量値に対
応するホツパ内の被計量物を、排出させるホツパ
制御手段と
を備えたことを特徴としている。
＜本発明の実施例＞
以下、図面に示す本発明の一実施例について説
明する。
第２図において、１1〜１oは計量ホツパであつ
て、それぞれに計量器２1〜２oが設けられてい
る。
３1a１，３1b〜３oa，３obはメモリホツパであ
つて、それぞれ計量器２1〜２oで計量された被計
量物を一時蓄えておくホツパである。この被計量
物の計量値は、計量値記憶手段４にメモリホツパ
３1a，３1b〜３oa，３obに対応して記憶されてい
る。
５は、計量値選択手段であつて、前記計量値記
憶手段４に記憶されているそれぞれの計量値を、
メモリホツパに対応させて選択的に読み出すもの
である。
６は、計量値選択手段５により選択された計量
値と、目標値設定手段９の出力である第１の目標
重量あるいは更新した第２、第３の目標重量との
減算を行なう減算手段である。
７は、前記減算手段の出力が０であるか若しく
は正又は負であるかを判定し、零の場合には、前
記計量値による前記減算手段６の順次減算を打切
る打切り信号を出力する極性判定手段である。
８は、前記極性判定手段７、後述する第１の比
較手段１２１、第２の比較手段１２２からの打切
り信号が出力されたとき、第１の目標重量からの
減算結果における減算に参加した計量値に対応す
るホツパ、あるいは、後述する目標重量更新最終
段数終了時での更新記憶された第２の上限許容値
内の減算及び目標重量更新における減算に参加し
た計量値に対応するホツパ内の被計量物を、ひと
まとめにするために排出させるホツパ制御手段で
ある。
目標値設定手段９は、第１の目標値設定手段９
１、目標値更新手段９２、前記第１の目標値設定
手段９１と目標値更新手段４２と目標値記憶手段
９４の出力を受けて目標値を選択する目標値選択
手段９３とから構成されている。
まず、第１の目標値設定手段９１の第１の目標
値（例えば200ｇ）を用いて第１上限許容値（１
ｇ）内の適切な組合せ計量値を得られない場合に
は、即ち、極性判定手段７、第１の比較手段１２
１では適切な値を得られない場合には、目標値を
更新するため目標値更新手段９２により、第１の
目標値（200ｇ）からある１つのホツパの計量値
を減算した減算手段６の出力値を、目標値記憶手
段９４に記憶をするとともに、目標値選択手段９
３へ入力して、これを第２の目標重量とする。そ
して、この第２の目標重量値から１つ１つのホツ
パの計量値を順次減算する（第２段の減算）。
それでも適切な組合せ計量値を得られない場合
には、さらに第２の目標重量からある１つのホツ
パの計量値を減じた値を、目標値記憶手段９４に
第３の目標重量値として更新記憶し、この第３の
目標重量から減算手段６によつて１つ１つのホツ
パの計量値を順次減算する（第３段の減算）。
１０は、所望とする計量値の許容範囲を定める
為の第１の上限許容値設定手段であり、例えば所
望とする計量値の−0.5％の値（−１ｇ）に設定
される。
１１は、前記第１の上限許容値設定手段１０の
第１の上限許容値（−１ｇ）を上回る値、例えば
−４％の値（−８ｇ）に設定する為の第２の上限
許容値設定手段である。
比較手段１２は、前記減算手段６の減算結果が
負の場合に、該減算結果と前記第１の上限許容値
とを比較して、第１の上限許容値以内の場合に
は、前記計量値による前記減算手段６の順次減算
を打切る打切り信号を出力し、第１の許容値を超
えている場合には、超過信号を第２の比較手段１
２２へ出力する第１の比較手段１２１と、
前記第１の比較手段１２１からの前記超過信号
を受けると、前記減算結果と前記第２の上限許容
値とを比較して、前記第２の上限許容値以内の場
合には、予め決められた目標重量更新段数（例え
ば第３段の減算終了）までに前記順次減算に応じ
て最も前記第１の上限許容値により近い減算結果
を更新記憶し、該目標重量更新段数までの減算終
了時に、前記計量値による前記減算手段６の順次
減算を打切る打切り信号を出力する第２の比較手
段１２２と、から構成される。
上記のような構成であつて、複数の計量器を並
列的に用いてその計量値を記憶し、目的とする設
定値と等しいか、設定値より大きくて設定値に近
い値の被計量物を得る計量装置において設定され
た所定重量（第１の目標重量）から、順次記憶さ
れている１つ１つのホツパごとの計量値を順次減
算する第１段目の減算を行ない、残値が０がマイ
ナス値を示すメモリホツパがあるときで、且つ０
又は第１の目標重量（200ｇ）の−0.5％（−１
ｇ）の許容値（第１の上限許容値）内に入る場合
は、直ちに減算を打切つてその対応するメモリホ
ツパを解放して、被計量物を排出して、次工程に
被計量物を搬出する。即ち、１つだけのメモリホ
ツパ内の被計量物を搬出する。
若し、全部のメモリホツパについての第１の減
算を行なつても０又は第１の上限許容値内に入る
メモリホツパがないときは、第２の上限許容値
（−８ｇ）内で最も第１の上限許容値（−１ｇ）
に近いマイナス値のメモリホツパの計量値及び対
応するメモリホツパを、第２の比較手段１２２内
で記憶する。
次に、第１段目のある１つの任意に選ばれたメ
モリホツパの計量値と、第１の目標重量との減算
結果を第２の目標値として更新し、前記選択され
たメモリホツパ以外のメモリホツパの計量値を前
記第２の目標値から順次減算する第２段目の減算
を行なう。そして、前記同様に０又は第１の上限
許容値内に入る場合は、直ちに順次減算を打切つ
てその対応する減算を参加したメモリホツパ及び
第２の目標重量のために減算に参加した前記選択
されたメモリホツパを解放し、被計量物を排出し
て、次工程に被計量物を搬送する。
若し、この第２段目のすべてのホツパの計量値
の減算において、０又は第１の上限許容値内を示
すメモリホツパがないときで、且つ第２の上限許
容値内の値があるときは、今まで記憶された第２
の上限許容値内で最も第１の上限許容値に近い値
と、今回の第２の上限値内の値とを比較し、より
第１の上限許容値に近いときは、記憶を今回の値
を更新記憶し、それに対応するメモリホツパを更
新記憶する。
もし、目標重量の更新が予め、第３目標重量ま
でで、第３段の減算までに設定した場合には、こ
の第３段階目の減算終了時に減算を打切り、この
ときの第１の上限許容値と第２の上限許容値との
間で更新記憶された値のメモリホツパ及び目標重
量更新の際の前記減算に参加したメモリホツパを
解放して、被計量物を排出する。
なお、若し第３段階の減算を行なつても、０又
は第１及び第２の上限許容値内のメモリホツパが
なかつた場合は、さらに第４の目標重量に更新し
て、第４段目の減算を行ない、この場合も、予め
決められた段数まで行ない、減算を行なう毎に、
０又は第１の上限許容値内を示すメモリホツパが
あれば排出し、なければ第２の上限許容値内にあ
るメモリホツパの計量値を記憶されているメモリ
ホツパの計量値と比較し、第１の上限許容値に最
も近いメモリホツパの計量値を記憶し、決められ
た段数において最後にそのメモリホツパを解放し
て目的とする被計量物を得るものである。（第３
図参照）。
具体例として第１の目標値を200ｇとした場合、
16ケのメモリホツパの計量記憶値は下表の通りで
あつたとすると
<Industrial Application Field> The present invention relates to a weighing device that brings objects to be weighed whose unit weights vary to a target weight or a value close to the target weight. <Prior art> Conventionally, when an object to be weighed whose unit weight varies as described above is set to a target weight, an error inevitably occurs between the target weight and the target weight. A weighing device is being considered. In a conventional weighing device of this type , as shown in FIG .
The objects to be weighed stored in the weighing hopper are each weighed by ~ bo . Then, the measured values of each weighing device b 1 to b o are input to the combination setting circuit c, and the combined weight for every combination (i.e., 2 n combinations) is calculated, and all the weights obtained by the calculation are Among the combined weights of
issue). The objects to be weighed in the plurality of weighing hoppers in the combination selected in this way are discharged to a collection chute or the like and grouped together. <Problems to be Solved by the Present Invention> However, in conventional weighing devices of this type, each measurement value is added in all combinations, all are stored, and all the combined addition results are stored in a comparator. (b) Calculates all combination additions, compares all combination addition results with target weight, and selects the one closest to the target weight, so in each combination selection The calculation process becomes huge and takes a lot of time. Moreover, in this type of weighing device, combinations must be performed one after another at high speed, so the large amount of time required for each combination calculation is accumulated and becomes a huge waste of time.
The efficiency of the combination is significantly degraded. (b) In order to select the one closest to the target weight from all combinations, for example, only one hopper,
Alternatively, even if there is a weight that is relatively close to the target weight due to the combination of only two hoppers, the combination of, for example, three or four hoppers closest to the target weight will be selected, so the number of combinations will inevitably increase. There will be more and more. However, since the shutter mechanism of the hopper selected for the combination opens and closes, the object to be weighed is discharged, and a new object to be weighed is supplied to the hopper, the greater the number of combinations, the more severe the damage to the shutter mechanism of the hopper, etc. This will shorten the lifespan. Furthermore, since it takes time to discharge the object to be weighed from the hopper and then fill it, the greater the number of combinations, the fewer the number of hoppers that can participate in selecting the next combination, making it difficult to obtain a good combination. Moreover, since measurement errors of the measuring instrument itself cannot be avoided, the larger the number of combinations, the more the measurement errors accumulate. There were other problems. An object of the present invention is to provide a measuring device that solves these problems. <Means for solving the above-mentioned problems> In order to solve the above-mentioned problems, the weighing device of the present invention includes: a plurality of measuring instruments for weighing objects to be weighed; and a measurement value from each of the weighing instruments to be measured. a first means for storing a weight value in association with each hopper in which an object is stored; and a first means for setting a target weight as a first target weight.
target weight setting means; and setting a value obtained by subtracting a measured value corresponding to at least one hopper stored in the measured value storage means from the target weight as a second target weight instead of the first target weight. target weight updating means for updating; and updating the measured value stored in the measured value storage means by the first target weight set in the first target weight setting means or by the target weight updating means. a subtraction means for sequentially subtracting from a second target weight; and a subtraction means for determining whether the subtraction result of the subtraction means is zero or negative, and in the case of zero, discontinuing the sequential subtraction of the subtraction means by the measured value. polarity determination means for outputting a signal; first upper limit tolerance setting means for setting a first upper limit tolerance that exceeds the first target weight; and a second upper limit that further exceeds the first upper tolerance value. a second upper limit tolerance setting means for setting a tolerance; when the subtraction result is negative, the subtraction result is compared with the first upper tolerance value, and if the subtraction result is within the first upper tolerance value; outputs an abort signal that aborts the sequential subtraction of the subtraction means based on the measured value;
a first comparison means that outputs an excess signal when the tolerance exceeds the tolerance value; and upon receiving the excess signal from the first comparison means, compares the subtraction result with the second upper tolerance value; and if it is within the second upper limit allowable value, update and store the subtraction result closest to the first upper limit allowable value according to the sequential subtraction until a predetermined target weight update stage number. , a second comparing means that outputs an abort signal for aborting the sequential subtraction of the subtracting means based on the measured value when the subtraction up to the target weight update stage number is completed; the polarity determining means, the first comparing means, the first comparing means; 2
When the discontinuation signal from the comparison means is output, the hopper corresponding to the weighed value that participated in the subtraction in the result of subtraction from the first target weight, or the update memory at the end of the final stage of target weight update. hopper control means for discharging the object to be weighed in the hopper corresponding to the weighed value that participated in the subtraction within the second upper limit allowable value and the subtraction in the target weight update. <Embodiment of the present invention> An embodiment of the present invention shown in the drawings will be described below. In FIG. 2, 1 1 to 1 o are weighing hoppers, each of which is provided with a measuring device 2 1 to 2 o . 3 1a 1, 3 1b to 3 oa and 3 ob are memory hoppers that temporarily store the objects to be weighed by the scales 2 1 to 2 o , respectively. The measured values of the objects to be weighed are stored in the measured value storage means 4 corresponding to the memory hoppers 3 1a , 3 1b to 3 oa , 3 ob . 5 is a measured value selection means which selects each measured value stored in the measured value storage means 4,
This is to selectively read data in correspondence with memory hoppers. Reference numeral 6 denotes a subtraction means for subtracting the measured value selected by the measured value selection means 5 and the first target weight or the updated second and third target weights which are the output of the target value setting means 9. . 7 is a polarity that determines whether the output of the subtracting means is 0, positive or negative, and outputs an abort signal that aborts the sequential subtraction of the subtracting means 6 based on the measured value if it is zero; It is a means of judgment. 8 is a measured value that participated in the subtraction in the result of subtraction from the first target weight when the discontinuation signal from the polarity determining means 7, the first comparing means 121, and the second comparing means 122, which will be described later, is output. , or the measured value in the hopper corresponding to the subtraction within the second upper limit allowable value updated and stored at the end of the final stage of target weight update, which will be described later, and the weighed value that participated in the subtraction in target weight update. This is a hopper control means for discharging objects in order to collect them all together. The target value setting means 9 is the first target value setting means 9
1. Consists of a target value updating means 92, a target value selecting means 93 for receiving the outputs of the first target value setting means 91, the target value updating means 42, and the target value storage means 94 and selecting a target value. . First, using the first target value (for example, 200 g) of the first target value setting means 91, the first upper limit allowable value (1
g) If it is not possible to obtain an appropriate combined measurement value, that is, the polarity determination means 7 and the first comparison means 12
If an appropriate value cannot be obtained with the first target value (200 g), the target value updating means 92 subtracts the measured value of one hopper from the first target value (200 g) to update the target value. The value is stored in the target value storage means 94, and the target value selection means 9
3 and make this the second target weight. Then, the weight value of each hopper is sequentially subtracted from this second target weight value (second stage subtraction). If an appropriate combined weight value is still not obtained, a value obtained by subtracting the weight value of one hopper from the second target weight is updated and stored in the target value storage means 94 as a third target weight value. The weight value of each hopper is sequentially subtracted from this third target weight by the subtraction means 6 (third stage subtraction). Reference numeral 10 denotes a first upper limit tolerance setting means for determining the tolerance range of the desired measured value, and is set to, for example, a value of -0.5% (-1 g) of the desired measured value. Reference numeral 11 denotes a second upper limit tolerance setting for setting the first upper tolerance value setting means 10 to a value exceeding the first upper tolerance value (-1 g), for example, a value of -4% (-8 g). It is a means. Comparison means 12 compares the subtraction result with the first upper limit tolerance when the subtraction result of the subtraction means 6 is negative, and if it is within the first upper tolerance, the measured value outputs an abort signal for aborting the sequential subtraction of the subtracting means 6, and when the first tolerance is exceeded, the excess signal is output to the second comparing means 1.
22; upon receiving the excess signal from the first comparison means 121, compares the subtraction result with the second upper limit allowable value and determines the second upper limit. If it is within the allowable value, update and store the subtraction result closest to the first upper limit allowable value according to the sequential subtraction until a predetermined number of target weight update stages (for example, the end of subtraction in the third stage); A second comparing means 122 outputs an abort signal for aborting the sequential subtraction of the subtracting means 6 based on the measured value when the subtraction up to the target weight update stage number is completed. With the above configuration, multiple scales are used in parallel to store the measured values, and the object to be weighed is equal to the desired set value, or larger than the set value and close to the set value. The first stage of subtraction is performed to sequentially subtract the measured values for each hopper stored in sequence from the predetermined weight (first target weight) set in the weighing device used to obtain the weight, and the remaining value is 0. When there is a memory hopper that shows a negative value and 0
Or -0.5% (-1) of the first target weight (200g)
g) If it falls within the tolerance value (first upper tolerance value), immediately stop the subtraction, release the corresponding memory hopper, eject the object to be weighed, and carry it out to the next process. . That is, the object to be weighed in only one memory hopper is carried out. If, even after performing the first subtraction for all memory hoppers, there is no memory hopper that falls within 0 or the first upper limit tolerance, the first subtraction within the second upper tolerance (-8g) Upper limit tolerance (-1g)
The metric value of the memory hopper with a negative value close to and the corresponding memory hopper are stored in the second comparison means 122. Next, the result of subtracting the measured value of one arbitrarily selected memory hopper in the first stage from the first target weight is updated as the second target value, and the weight of the memory hopper other than the selected memory hopper is updated as the second target value. A second stage subtraction is performed in which the measured value is sequentially subtracted from the second target value. Then, if the value falls within 0 or the first upper limit allowable value, the memory hopper that participated in the corresponding subtraction and the selected memory hopper that participated in the subtraction for the second target weight immediately aborts the subtraction sequentially and performs the corresponding subtraction. The memory hopper is released, the object to be weighed is discharged, and the object to be weighed is transported to the next process. In the subtraction of the measured values of all hoppers in this second stage, if there is no memory hopper indicating 0 or within the first upper limit tolerance, and there is a value within the second upper limit tolerance, then , the second ever remembered
Compare the value closest to the first upper tolerance value within the upper tolerance value with the current value within the second upper tolerance value, and if it is closer to the first upper tolerance value, save the memory to the current value. is updated and stored, and the corresponding memory hopper is updated and stored. If the target weight is updated in advance up to the third target weight and set before the third stage subtraction, the subtraction will be terminated at the end of the third stage subtraction, and the first upper limit tolerance at this time will be The memory hopper of the value updated and stored between the value and the second upper limit allowable value and the memory hopper that participated in the subtraction when updating the target weight are released, and the object to be weighed is discharged. In addition, even if the third stage subtraction is performed, if there is no memory hopper that is 0 or within the first and second upper limit allowable values, the target weight is further updated to the fourth target weight, and the fourth stage is performed. In this case as well, perform subtraction up to a predetermined number of stages, and each time subtraction is performed,
If there is a memory hopper that indicates 0 or within the first upper limit tolerance, it is discharged; if not, the measured value of the memory hopper that is within the second upper limit tolerance is compared with the measured value of the stored memory hopper, and the measured value of the memory hopper is discharged. The weighing value of the memory hopper closest to the allowable value is stored, and the memory hopper is finally released at a predetermined number of stages to obtain the target object to be weighed. (3rd
(see figure). As a specific example, if the first target value is 200g,
Assuming that the metric memory values of the 16 memory hoppers are as shown in the table below.
【表】【table】
【表】
(a) 第１回目の組合せは、200ｇの設定値から順
次ホツパ（〇内の数値はホツパNo.を示す。以
下同じ）の計量値〜ホツパの計量値を減算す
るが、この場合ホツパが201ｇなので、200−
201＝−１ｇ……−0.5％（−１ｇ）以内なの
で、減算演算はホツパで打切り、ホツパを
排出し、第１回目の組合せはホツパ１つのみで
終了する。
(b) 次に第２回目の組合せに移る。
この場合、排出したホツパに投入されて新
しい計量値が出力されるのは、次々回なので、
ホツパ〜を継続して第１の目標重量から減
算する。この場合０〜−４％（−８ｇ）内のも
のがないので、次に２段目の減算に進む。
すなわち、ある１つのホツパを選んで、第
１の目標重量から減算すると、200ｇ−70ｇ
＝130ｇであるから、130ｇを第２の目標重量と
して更新する。
この場合ホツパを除いてホツパ〜ホツパ
の減算を行なうわけであるが、ホツパの
132ｇを減算すると、130ｇ−132ｇ＝−２ｇで
−0.5％を超え−４％内なので、これを記憶す
る。そして、さらにホツパまでの減算を行な
い、更に順次、予め定めた所定の、例えば第２
段数までとすると、第２目標重量からの減算を
行なつた結果、前記−２ｇが最も第１上限許容
値に近いので、これが記憶されていて、ホツパ
とホツパが組合せに選ばれて、ホツパと
ホツパを排出する。
(c) 第３回目の組合せでは、すでにホツパに新
しい計量値が用意されているので、再度第１目
標重量の200ｇから順次ホツパ〜ホツパを
減算するが、この場合、ホツパとホツパは
排出後なので除かれる。
ホツパ208ｇは200ｇ−208ｇ＝−８ｇで−
４％内に入るが、−0.5％を超えているので、こ
れを記憶し、減算は２段目に進む。
すなわち、200ｇ−ホツパ68ｇ＝132ｇを第
２の目標値として、ホツパ〜ホツパまでホ
ツパとホツパを除いて減算し、０〜−0.5
％に入るものがないので、次に200ｇ−ホツパ
85ｇ＝115ｇを第３の目標値とし、同様に順
次減算をする。
同様に200ｇ−ホツパ〜ホツパを行なつ
て、それぞれについてホツパ〜ホツパ（排
出後のものを除く）の減算を行なう。
そして０〜0.5％のものがなければ、３段目
に移り、200ｇ−ホツパ68ｇ＝132ｇ次に132
ｇ−ホツパ85ｇ＝47ｇについて、ホツパ〜
ホツパ（排出後のものを除く）を減算する。
しかるに47ｇ−ホツパ47ｇ＝０なので、ホツ
パ、ホツパホツパを排出する。そして、
次に４回目の組合せ演算に移る。
＜本発明の効果＞
このように本発明では、減算によつて目的とす
る計量品を得る場合、１ケのホツパのみで第１の
上限許容値内に入つたものがあれば、その１ケの
ホツパを排出することによつて組合せの目的を達
し、目的を達しない場合は、第２の目標重量に更
新して、２段目の減算を行ない、あるいは予め定
めた段数まで減算を行なつて、ホツパ１ケのみで
得られなければ２ケのみ、２ケのみで得られなけ
れば３ケというように組合せを選ぶので、常に最
小の組合せ数で組合せの目的を達することができ
る。
したがつて、本発明では、前記した従来の計量
装置のようにホツパ数全部による組合せ加算及び
目標重量との全部の組合せ重量との比較が不要と
なり、ホツパ１ケのみ、あるいは２ケ、３ケのみ
で組合せを得て、直ちに演算を打切るから、演算
処理が大幅に省略でき、演算に要する時間を大幅
に短縮でき、１時間に何万回も組合せを行なうこ
の種の計量装置では、この１回１回の演算時間の
短縮効果により、組合せ計量の作業能率が、格段
に向上できる。
また、以上説明したように、常に最小の組合せ
数で行なうので、ホツパ開閉の機構などの寿命が
長くなり、また、計量器の測定誤差の累積による
精度劣化も改善される。[Table] (a) For the first combination, subtract the weighing value of the hopper (the number in the circle indicates the hopper number. The same applies below) to the weighing value of the hopper in order from the set value of 200g, but in this case Hotsupa is 201g, so 200−
201=-1g... Since it is within -0.5% (-1g), the subtraction operation is terminated at the hopper, the hopper is discharged, and the first combination is completed with only one hopper. (b) Next, move on to the second combination. In this case, the new weighing value is output one after another after being put into the discharged hopper.
Hopper continues to subtract from the first target weight. In this case, since there is no value within 0 to -4% (-8g), the process proceeds to the second stage of subtraction. In other words, if you select one hopper and subtract it from the first target weight, it will be 200g - 70g.
= 130g, so 130g is updated as the second target weight. In this case, hoppa is excluded and subtraction is performed from hoppa to hoppa, but hoppa's
When 132g is subtracted, 130g - 132g = -2g, which is over -0.5% and within -4%, so store this. Then, subtraction is further performed up to the hopper, and further sequentially, a predetermined predetermined value, for example, the second
Assuming that it is up to the number of stages, as a result of subtracting it from the second target weight, the above-mentioned -2g is closest to the first upper limit allowable value, so this is stored, and the hopper and hopper are selected as a combination, and the hopper and the hopper are Discharge the hopspa. (c) In the third combination, a new weighing value has already been prepared for the hopper, so hoppa to hoppa are again subtracted sequentially from the first target weight of 200g, but in this case, the hoppa and hoppa are after being discharged. removed. Hotsupa 208g is 200g - 208g = -8g -
Although it falls within 4%, it exceeds -0.5%, so this is memorized and the subtraction proceeds to the second step. In other words, with 200g - hoppa 68g = 132g as the second target value, subtract from hoppa to hoppa excluding hoppa and hoppa, 0 to -0.5
Since there is nothing that falls into the %, next 200g-hotupa
Set 85g=115g as the third target value and perform subtraction in the same way. Similarly, perform 200g-hopper to hopper, and subtract hopper to hopper (excluding those after discharge) for each. Then, if there is no 0-0.5%, move to the third stage, 200g - Hoppa 68g = 132g, then 132
About g-Hotupa 85g = 47g, Hotupa~
Subtract hops (excluding those after discharge).
However, since 47g - hoppa 47g = 0, hoppa and hoppa hoppa are discharged. and,
Next, the process moves to the fourth combination operation. <Effects of the Present Invention> As described above, in the present invention, when obtaining a target measured product by subtraction, if there is one item that falls within the first upper limit tolerance with only one hopper, that one item is The purpose of the combination is achieved by discharging the hopper, and if the purpose is not achieved, the weight is updated to the second target weight and subtraction is performed in the second stage, or the subtraction is performed up to a predetermined number of stages. If the hopper cannot be obtained with only one hopper, then only 2 hoppers are selected, and if the hopper cannot be obtained with only 2 hoppers, then 3 hoppers are selected, and so on, so that the purpose of the combination can always be achieved with the minimum number of combinations. Therefore, in the present invention, unlike the conventional weighing device described above, it is not necessary to add the combinations of all hoppers and compare the total combined weight with the target weight, and only one hopper, two or three hoppers are required. Since the combinations are obtained using only the chisel and the calculations are immediately stopped, the calculation process can be greatly omitted and the time required for calculations can be greatly reduced. Due to the effect of shortening the calculation time for each calculation, the work efficiency of combination weighing can be significantly improved. Further, as explained above, since the minimum number of combinations is always used, the life of the hopper opening/closing mechanism etc. is extended, and deterioration in accuracy due to accumulation of measurement errors of the measuring instrument is also improved.
第１図は従来の組合せ装置の組合せ選定装置を
示す概略構成図、第２図は機能ブロツク図、第３
図は本発明における計量装置において、所定の重
量の目標を得るための演算方法および第１、第２
の上限許容値等との関係を示す図である。
１1〜１o……計量ホツパ、２1〜２o……計量
器、３1a，３1b〜３oa，３ob……メモリホツパ、
４……計量値記憶手段、５……計量値選択手段、
７……極性判定手段、８……ホツパ制御手段、９
……目標重量設定手段、９１……第１の目標重量
設定手段、９２……目標重量更新手段、９３……
目標重量選択手段、９４……目標重量記憶手段、
１０……第１の上限許容値設定手段、１１……第
２の上限許容値設定手段、１２……比較手段、１
２１……第１の比較手段、１２２……第２の比較
手段。
Figure 1 is a schematic configuration diagram showing a combination selection device of a conventional combination device, Figure 2 is a functional block diagram, and Figure 3 is a functional block diagram.
The figure shows a calculation method for obtaining a predetermined weight target, and first and second
It is a figure which shows the relationship with the upper limit tolerance value etc. 1 1 ~ 1 o ... Weighing hopper, 2 1 ~ 2 o ... Measuring instrument, 3 1a , 3 1b ~ 3 oa , 3 ob ... Memory hopper,
4...Measurement value storage means, 5...Measurement value selection means,
7...Polarity determination means, 8...Hopper control means, 9
...Target weight setting means, 91...First target weight setting means, 92...Target weight updating means, 93...
Target weight selection means, 94...Target weight storage means,
10...First upper limit tolerance setting means, 11...Second upper limit tolerance setting means, 12...Comparison means, 1
21...first comparison means, 122...second comparison means.
Claims (1)
された各ホツパに対応づけて記憶する計量値記憶
手段と、 目標重量を第１の目標重量として設定する第１
の目標重量設定手段と、 前記目標重量から前記計量値記憶手段に記憶さ
れた少なくとも１つのホツパに対応した計量値を
減算した値を第２の目標重量として、前記第１の
目標重量の代わりに更新する目標重量更新手段
と、 前記計量値記憶手段に記憶された計量値を、前
記第１の目標重量設定手段に設定された第１の目
標重量あるいは前記目標重量更新手段によつて更
新された第２の目標重量から順次減算する減算手
段と、 前記減算手段の減算結果が零もしくは負か否か
を判断し、零の場合には、前記計量値による前記
減算手段の順次減算を打切る打切り信号を出力す
る極性判定手段と、 前記第１の目標重量を上回る第１の上限許容値
を設定する第１の上限許容値設定手段と、 該第１の上限許容値を更に上回る第２の上限許
容値を設定する第２の上限許容値設定手段と、 前記減算結果が負の場合に、該減算結果と前記
第１の上限許容値とを比較して、第１の上限許容
値以内の場合には、前記計量値による前記減算手
段の順次減算を打切る打切り信号を出力し、第１
の許容値を超えている場合には、超過信号を出力
する第１の比較手段と、 前記第１の比較手段からの前記超過信号を受け
ると、前記減算結果と前記第２の上限許容値とを
比較して、前記第２の上限許容値以内の場合に
は、予め決められた目標重量更新段数までに前記
順次減算に応じて最も前記第１の上限許容値によ
り近い減算結果を更新記憶し、該目標重量更新段
数までの減算終了時に、前記計量値による前記減
算手段の順次減算を打切る打切り信号を出力する
第２の比較手段と、 前記極性判定手段、前記第１の比較手段、第２
の比較手段からの前記打切り信号が出力されたと
き、前記第１の目標重量からの減算結果における
減算に参加した前記計量値に対応するホツパ、あ
るいは、目標重量更新最終段数終了時での更新記
憶された第２の上限許容値内の減算及び前記目標
重量更新における減算に参加した前記計量値に対
応するホツパ内の被計量物を、排出させるホツパ
制御手段とを備えた計量装置。[Scope of Claims] 1: a plurality of measuring instruments for weighing objects to be weighed; a measured value storage means for storing measured values from each of the measuring instruments in association with each hopper in which the objects to be weighed are stored; The first step is to set the target weight as the first target weight.
target weight setting means; and setting a value obtained by subtracting a measured value corresponding to at least one hopper stored in the measured value storage means from the target weight as a second target weight instead of the first target weight. target weight updating means for updating; and updating the measured value stored in the measured value storage means by the first target weight set in the first target weight setting means or by the target weight updating means. a subtraction means for sequentially subtracting from the second target weight; and an abort for determining whether the subtraction result of the subtraction means is zero or negative, and in the case of zero, discontinuing the sequential subtraction of the subtraction means based on the measured value. polarity determination means for outputting a signal; first upper limit tolerance setting means for setting a first upper limit tolerance that exceeds the first target weight; and a second upper limit that further exceeds the first upper tolerance value. a second upper limit tolerance setting means for setting a tolerance; when the subtraction result is negative, the subtraction result is compared with the first upper tolerance value, and if the subtraction result is within the first upper tolerance value; outputs an abort signal that aborts the sequential subtraction of the subtraction means based on the measured value;
a first comparison means that outputs an excess signal when the tolerance exceeds the tolerance value; and upon receiving the excess signal from the first comparison means, compares the subtraction result with the second upper tolerance value; and if it is within the second upper limit allowable value, update and store the subtraction result closest to the first upper limit allowable value according to the sequential subtraction until a predetermined target weight update stage number. , a second comparing means that outputs an abort signal for aborting the sequential subtraction of the subtracting means based on the measured value when the subtraction up to the target weight update stage number is completed; the polarity determining means, the first comparing means, the first comparing means; 2
When the discontinuation signal from the comparison means is output, the hopper corresponding to the weighed value that participated in the subtraction in the result of subtraction from the first target weight, or the update memory at the end of the final stage of target weight update. hopper control means for ejecting the object to be weighed in the hopper corresponding to the weighed value that participated in the subtraction within the second upper limit allowable value and the subtraction in the target weight update.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5466083A JPS59180333A (en) | 1983-03-30 | 1983-03-30 | Metering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5466083A JPS59180333A (en) | 1983-03-30 | 1983-03-30 | Metering device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26188090A Division JPH03142327A (en) | 1990-09-29 | 1990-09-29 | Weighing instrument |
| JP26187990A Division JPH03142326A (en) | 1990-09-29 | 1990-09-29 | Weighing instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59180333A JPS59180333A (en) | 1984-10-13 |
| JPH0344255B2 true JPH0344255B2 (en) | 1991-07-05 |
Family
ID=12976940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5466083A Granted JPS59180333A (en) | 1983-03-30 | 1983-03-30 | Metering device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59180333A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62231122A (en) * | 1986-03-31 | 1987-10-09 | Anritsu Corp | Combined weighing equipment |
| JPH03142327A (en) * | 1990-09-29 | 1991-06-18 | Anritsu Corp | Weighing instrument |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794617A (en) * | 1980-12-04 | 1982-06-12 | Yamato Scale Co Ltd | Combined weighing apparatus |
| JPS57149923A (en) * | 1981-03-11 | 1982-09-16 | Yamato Scale Co Ltd | Combined balance |
-
1983
- 1983-03-30 JP JP5466083A patent/JPS59180333A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794617A (en) * | 1980-12-04 | 1982-06-12 | Yamato Scale Co Ltd | Combined weighing apparatus |
| JPS57149923A (en) * | 1981-03-11 | 1982-09-16 | Yamato Scale Co Ltd | Combined balance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59180333A (en) | 1984-10-13 |
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