JPS6031023A - Electronic counting scale - Google Patents

Electronic counting scale

Info

Publication number
JPS6031023A
JPS6031023A JP13956183A JP13956183A JPS6031023A JP S6031023 A JPS6031023 A JP S6031023A JP 13956183 A JP13956183 A JP 13956183A JP 13956183 A JP13956183 A JP 13956183A JP S6031023 A JPS6031023 A JP S6031023A
Authority
JP
Japan
Prior art keywords
samples
sample
average weight
added
weight
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
Application number
JP13956183A
Other languages
Japanese (ja)
Inventor
Akira Kawamoto
河本 晟
Yasuhiro Fujinaga
藤永 康弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimadzu Corp
Shimazu Seisakusho KK
Original Assignee
Shimadzu Corp
Shimazu Seisakusho KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimadzu Corp, Shimazu Seisakusho KK filed Critical Shimadzu Corp
Priority to JP13956183A priority Critical patent/JPS6031023A/en
Publication of JPS6031023A publication Critical patent/JPS6031023A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01GWEIGHING
    • G01G19/00Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
    • G01G19/40Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
    • G01G19/42Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight for counting by weighing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

PURPOSE:To count the number of samples quickly and accurately, by preventing the updating of the average weight of samples until the number of added samples exceeds the maximum allowable number of added samples, and making the constitution and operation simple. CONSTITUTION:Samples 1, whose number is known, are mounted on a measuring pan. The known number and the dispersion data of the sample weights are inputted from the keyboard 7 of a control part 9. The average weight of the sample and the maximum number of addition of the sample without counting errors are counted by a CPU4 and stored in an RAM6 and the like. The number of the added samples is counted by the following measurements of the added samples and the average weight in the RAM. At this time, whether the number of the added sample exceeds the maximum allowable number or not is judged by the CPU. Unless the added number exceeds the allowable number, the average weight in the RAM6 is not updated. When it is exceeded, alarm is generated. Therefore the average weight is not required to be computed at every measurement, and the constitution and operation can be made simple. Thus the number of the sample can be counted by an electric counting scale quickly and accurately.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は電子計数はかりに関する。[Detailed description of the invention] (b) Industrial application fields The present invention relates to electronic counting scales.

(ロ)従来技術 多数個の同種試料の重量を試料1111当たりの平均重
量で除して試料個数を計数する計数はかりにおいて、個
々の試料重量のばらつきに起因する計数誤差を如何に排
除するかが重要な問題である。
(b) Prior art In a counting scale that counts the number of samples by dividing the weight of a large number of samples of the same type by the average weight per sample 1111, how to eliminate counting errors caused by variations in the weight of individual samples. This is an important issue.

本出願者は先に特願昭57−54239において、試料
重量の変動係数や標準偏差等、試料重量のばらつきに関
する情報を算出し、試料を追加計数する毎に試料1個当
たりの平均重量を更新すると共に、計数誤差を含まない
で次回に追加計数できる許容最大追加個数を算出する手
段を有した電子計数ばかりを提案した。しかし、重量値
のばらつきが既知の場合もあり、その場合にも複数回の
秤量操作を行って重量値のばらつきを算出することは無
駄である。
In Japanese Patent Application No. 57-54239, the present applicant previously calculated information regarding variations in sample weight, such as the coefficient of variation and standard deviation of sample weight, and updated the average weight per sample each time additional samples were counted. At the same time, they proposed an electronic counter that has a means to calculate the maximum allowable number of additional items that can be counted next time without including counting errors. However, there are cases where the variation in weight values is known, and even in that case, it is wasteful to perform the weighing operation multiple times to calculate the variation in weight values.

(ハ)目的 従って本発明は、初めから計数誤差を生ずることなく試
料個数を計数することのできる電子計数はかりの提供を
その目的としている。
(c) Objective Accordingly, an object of the present invention is to provide an electronic counting scale that can count the number of samples without causing counting errors from the beginning.

(ニ)構成 上記の目的を達成するため、本発明による電子計数はか
りは、個々の試料重量のばらつきに関する情報を入力す
る重量値ばらつき情報入力手段と、負荷されている試料
重量を試料個数で除して試料1個当たりの平均重量を算
出する平均重量算出手段と、上記の試料重量のばらつき
に関する情報および既計数試料個数より計数誤差零で追
加計数可能な許容最大試料追加個数を算出する手段と、
追加された試料個数および上記平均重量より試料追加個
数を算出する手段と、この追加試料個数が上記許容最大
試料追加個数を超えているか否かを判断する手段とを有
している。
(D) Structure In order to achieve the above object, the electronic counting scale according to the present invention includes a weight value variation information input means for inputting information regarding variation in individual sample weights, and a weight value variation information input means for inputting information regarding variation in individual sample weights, and a weight value variation information input means for dividing the loaded sample weight by the number of samples. an average weight calculation means for calculating the average weight per sample; and a means for calculating the maximum allowable additional number of samples that can be additionally counted with zero counting error based on the information regarding the variation in sample weight and the number of already counted samples. ,
The apparatus includes means for calculating the number of additional samples from the number of added samples and the average weight, and means for determining whether the number of additional samples exceeds the allowable maximum number of additional samples.

(ホ)実施例 以下に本発明の実施例を第1図および第2図に基づいて
説明する。第1図は本実施例の構成を示す図であり、第
2図は作用を説明するフローチャートである。
(e) Examples Examples of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing the configuration of this embodiment, and FIG. 2 is a flowchart explaining the operation.

第1図において電子天びん方式の秤量値出力部3は秤量
皿2に載せられた試料の重量値を出力し、その値は、C
PU4、ROM5、RAM6、キーボード7および表示
部8から成る制御部9に入力される。ROM5は、本実
施例の作用を規定する、第2図に示したフローチャート
に対応したプログラムを記憶している。以上の構成にお
いて、先ず、計数すべき試料の個々の重量値の変動係数
Cv(既知)をキーボード7より入力する(第2図、フ
ローチャートのステップ21)。次に既知個数Noの試
料を秤量皿2に載せ、個数NOをキーボード7より入力
すると(ステップ22)CPU4は秤量値出力部3の出
力する試料重量WOと試料個数Noより試料1個当たり
の平均重量X0−Wo/Noを算出(ステップ23)、
続いて先に入力されている変動係数Cvと試料個数No
より、計数誤差をもたらすことなく追加し得る第1回目
の許容最大追加個数PI ’が式 %式%) に基づいてされ、その値が表示される(ステップ24に
おいてn=1)。この許容最大追加個数P1以下と推定
される未知個数の試料を追加(ステップ25)とすると
、試料追加前のNo個の試料重量Woと追加後の試料重
量W1との差として追加試料重量Ml =wl−wQが
められ(ステップ26においてn=1) 、それを先に
ステップ23でめた試料1個当たりの平均重量X()で
除算し、P+ =M1/To (端数をまるめる)を追
加個数として算出、これに既計数個数(今の場合No)
を加算、さらにこれから風袋値N−r (風袋重量を試
料個数に換算した値−後述)を差し引いた値Nn=Pn
+Nn−+−NT (今の場合n−1)が表示される(
ステップ27)。しかし、ステップ25で試料の追加が
行われない間はステップ27でPnはPl=0と計算さ
れ、その結果、過程は次の判断ステップ28のYESの
ブランチを通り、ステップ35を経てステップ25に戻
る。ステップ35においては、風袋引き操作の有無に応
じて上記風袋値NTがp n + Nn−1または零(
風袋=初期値=0)にセントされる。従って、ステップ
25において試料の追加がない場合は勿論、試料用の風
袋のみが負荷された場合でもステップ27で計数試料個
数(今の場合はNo)を表示することができるようにな
っている。ステップ25で試料の追加が行われればステ
ップ28はステップ29に進み、そこで、追加個数が許
容最大追加個数を超えているか否かが判断され、超えて
いれば警報が発せられ(ステップ34)、過程はステッ
プ35を経て(6) ステップ25に戻り、また、超えていなければ、過程は
ステップ30を経てステップ32に進み、そこで試料1
個当たりの平均重量が更新される。
In FIG. 1, the weighing value output unit 3 of the electronic balance system outputs the weight value of the sample placed on the weighing pan 2, and the value is C
The data is input to a control section 9 consisting of a PU 4, a ROM 5, a RAM 6, a keyboard 7 and a display section 8. The ROM 5 stores a program corresponding to the flowchart shown in FIG. 2, which defines the operation of this embodiment. In the above configuration, first, the coefficient of variation Cv (known) of each weight value of the sample to be counted is input from the keyboard 7 (step 21 of the flowchart in FIG. 2). Next, when a sample with a known number of pieces is placed on the weighing pan 2 and the number of pieces is entered from the keyboard 7 (step 22), the CPU 4 calculates the average per sample from the sample weight WO output from the weighed value output section 3 and the number of samples. Calculate weight X0-Wo/No (step 23),
Next, the coefficient of variation Cv and the number of samples No. that were input earlier
Therefore, the first allowable maximum addition number PI' that can be added without causing a counting error is calculated based on the formula % (%), and the value is displayed (n=1 in step 24). When an unknown number of samples estimated to be less than or equal to the allowable maximum additional number P1 is added (step 25), the additional sample weight Ml = the difference between the weight of No samples Wo before addition and the sample weight W1 after addition. wl-wQ is determined (n=1 in step 26), divided by the average weight per sample X() determined earlier in step 23, and P+ = M1/To (rounding the fraction) is the number of additional pieces. Calculated as , and add the number of already counted items (No in this case)
is added, and the value obtained by subtracting the tare value N-r (the value obtained by converting the tare weight to the number of samples - described later) is Nn = Pn.
+Nn-+-NT (n-1 in this case) is displayed (
Step 27). However, while no sample is added in step 25, Pn is calculated as Pl=0 in step 27, and as a result, the process passes through the YES branch of the next decision step 28, and returns to step 25 via step 35. return. In step 35, the tare value NT is p n + Nn-1 or zero (
Tare=initial value=0). Therefore, the number of counted samples (No in this case) can be displayed in step 27 even if no sample is added in step 25 or even if only the sample tare is loaded. If samples are added in step 25, step 28 proceeds to step 29, where it is determined whether the number of samples to be added exceeds the allowable maximum number of samples to be added, and if it does, an alarm is issued (step 34). The process returns to step 25 via step 35 (6), and if not exceeded, the process proceeds via step 30 to step 32 where sample 1
The average weight per piece is updated.

さらに追加計数を行う場合にはステップ33のN。If additional counting is to be performed, step 33 is N.

のブランチより過程はステップ24に戻りn−2゜3、
−として所定個数の計数完了まで上記の過程がくり返さ
れる。はかり取り操作が終了ずれぼりセット操作を行う
ことにより、ステップ36で装置のりセント処理が行わ
れる。
The process returns to step 24 from the branch n-2゜3,
-, the above process is repeated until counting of a predetermined number of objects is completed. After the weighing operation is completed, an offset setting operation is performed, and in step 36, the device percentage processing is performed.

本発明は計算過程のステップの一部を第3図に示すフロ
ーチャートのように変型して実施することもできる。こ
の実施例では、一連の所定個数のはかり取り操作の終了
後、続いて同種試料のはかり取り操作を継続する場合、
はかり取り過程において試料追加毎に増大する試料個数
が、先行の過程におけるはかり取り完了個数のうちの最
大値を超えるまでは、試料1個当たりの平均重量更新ス
テップを省略することにより、はかり取り時間の短縮が
はかられている。第3図に示すフローチャートでは、第
2図におけるフローチャートのステップ30とステップ
32の間にステップ31が挿入され、それに応じてステ
ップ32がステップ32aに変更されている。ステップ
31は、何回目かのはかり取り操作の過程において試料
個数Nnが、先行のはかり取り完了個数の最大値Nma
xを超えているかを判断するステップである。従って、
初回のはかり取り操作ではNmaxば零で、追加計数毎
に過程は常にこのステップ31のYESのブランチを通
り、第2図のフローチャートに基づ〈実施例の場合にお
ける平均値更新ステップ32に対応するステップ32a
を通した過程で計数が行われる。所定個数のはかり取り
が終了した時、初回の上記所定個数がNmaxとしてR
AM6(第1図)に記憶されている。次に2回目のはか
り取り操作を行う場合には試料個数NnがNmax以下
である間はステップ31はNOに進みステップ35から
25に進んで平均重量の更新なしで計数する過程がくり
返される。NnがNmaXを超えれば、ステップ31は
YESブランチを通ってステップ32aに進み、以後は
試料追加毎にNmaxが更新され、このステップ32a
で、式Xn=W n / N m a xに基づいて平
均値が更新される。
The present invention can also be implemented by modifying some of the steps in the calculation process as shown in the flowchart shown in FIG. In this embodiment, when continuing the weighing operation of the same type of sample after completing a series of weighing operations for a predetermined number of samples,
Until the number of samples that increases each time a sample is added in the weighing process exceeds the maximum value of the number of samples completed in the previous process, the weighing time can be reduced by omitting the step of updating the average weight per sample. is being shortened. In the flowchart shown in FIG. 3, step 31 is inserted between step 30 and step 32 of the flowchart in FIG. 2, and step 32 is changed to step 32a accordingly. In step 31, in the process of several weighing operations, the number of samples Nn is equal to the maximum value Nma of the number of samples completed in the previous weighing process.
This is the step of determining whether the value exceeds x. Therefore,
In the first weighing operation, Nmax is zero, and for each additional count, the process always passes through the YES branch of step 31, based on the flowchart of FIG. Step 32a
Counting is done in the process of passing through. When the predetermined number of pieces has been weighed, the first predetermined number is Nmax and R is
AM6 (FIG. 1). Next, when performing a second weighing operation, as long as the number of samples Nn is less than or equal to Nmax, step 31 goes NO, and the process goes from step 35 to step 25, and the counting process is repeated without updating the average weight. If Nn exceeds Nmax, step 31 passes through the YES branch and proceeds to step 32a. From then on, Nmax is updated every time a sample is added, and this step 32a
Then, the average value is updated based on the formula Xn=Wn/Nmax.

はかり取りが完了した時最終はかり取り個数がNmax
としてRAM6に残る。また、このはかり取り操作過程
において最終はかり取り個数が、初回のはかり取り個数
に満たない場合は、初回の最終はかり取り個数がNma
xとしてRAM6に記憶されたままになり、2回目の最
終はかり取り個数でNmaxが更新されることはない。
When weighing is completed, the final number of pieces to be weighed is Nmax.
remains in RAM6 as In addition, if the final number of pieces to be weighed in this weighing operation process is less than the first number of pieces to be weighed, the final number of pieces to be weighed for the first time will be Nma.
x remains stored in the RAM 6, and Nmax is not updated with the second final weighing number.

更に本発明は、上記のNmaxが、各回のはかり取り操
作終了毎に、その時の最終はかり取り個数で更新される
ように実施することもできる。このような実施例では、
平均値の更新は、測定終了毎に実行され、同種試料のは
かり取りであっても、試料製造中の僅かな試料重量のド
リフトによる計数誤差の発生を防ぐのに有効である。
Furthermore, the present invention can be implemented such that the above-mentioned Nmax is updated with the final number of items weighed at that time each time the weighing operation is completed. In such embodiments,
Updating the average value is executed every time a measurement is completed, and is effective in preventing counting errors due to slight drifts in sample weight during sample manufacture, even when samples of the same type are weighed.

本発明はまた、以上のすべての実施例において共通する
ステップ21とステップ23を、第4図に示した部分フ
ローチャートの、それぞれステップ21aと23aに変
更して実施することもてきる。この実施例では最初ステ
ップ21aにおいて試料重量値の標準偏差So (既知
)が入力され、ステップ23aにおいて既知個数NOの
平均試料重量Xoと変動係数Cvがめられるように構成
されている。
The present invention can also be implemented by changing steps 21 and 23, which are common to all the embodiments described above, to steps 21a and 23a, respectively, in the partial flowchart shown in FIG. In this embodiment, the standard deviation So (known) of sample weight values is first input in step 21a, and the average sample weight Xo and coefficient of variation Cv of the known number NO are determined in step 23a.

(へ)効果 以上の説明から明らかなように、最初に、試料重量のば
らつきに関する情報である試料重量の変動係数または標
準偏差を入力することにより、従来装置にくらべて構成
と操作が簡単化され、しかも、精度に影響をおよぼすこ
となく平均値更新過程の一部を省略することにより計数
所要時間が短縮された電子計数はかりが得られる。
(Effect) As is clear from the above explanation, by first inputting the variation coefficient or standard deviation of the sample weight, which is information regarding the variation in sample weight, the configuration and operation are simplified compared to conventional devices. Moreover, by omitting a part of the average value updating process without affecting accuracy, an electronic counting scale can be obtained in which the time required for counting is shortened.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明実施例のブロック構成図、第2図は同実
施例のプログラムの内容を示すフローチャートである。 第3図は本発明の他の実施例のフローチャート、第4図
は本発明の更に別の実施例のフローチャートである。 1−・試料 2−・秤量皿 3−重量値出力部 4−CP U 5・−ROM 6−RA M 7−キーボード 8−表示部 9−制御部 特許出願人 株式会社島津製作所 代理人 弁理士面1)新 (I+)
FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a flowchart showing the contents of a program of the embodiment. FIG. 3 is a flowchart of another embodiment of the invention, and FIG. 4 is a flowchart of still another embodiment of the invention. 1- Sample 2- Weighing pan 3- Weight value output section 4- CPU 5- ROM 6- RAM 7- Keyboard 8- Display section 9- Control section Patent applicant Shimadzu Corporation Agent Patent attorney 1) New (I+)

Claims (1)

【特許請求の範囲】 (11([1々の試料重量のばらつきに関する情報を入
力する重量値ばらつき情報入力手段と、負荷されている
試料重量を試料個数で除して試料1個当たりの平均重量
を算出する平均重量算出手段と、上記の、試料重量のば
らつきに関する情報および既計数試料個数より計数誤差
零で追加計数可能な許容最大試料追加個数を算出する手
段と、追加された試料重量および上記平均重量より追加
試料個数を算出する手段と、この追加試料個数が上記許
容最大試料追加個数を超えているか否かを判断する手段
とを有し、試料の追加計数過程において追加負荷される
試料が特定個数を超える毎に上記平均重量算出手段が試
料の平均重量を更新するよう構成された電子計数はかり
。 (2)追加負荷される試料の上記特定個数が、試料追加
前にすでに負荷されている試料個数であることを特徴と
する特許請求の範囲第1項に記載の電子計数はかり。 (3)追加負荷される試料の上記特定個数が、先行の各
一連の計数過程においてはかり取られた最終はかり取り
個数のうちの最大値であることを特徴とする特許請求の
範囲第1項に記載の電子計数はかり。 (4)追加負荷される試料の上記特定個数が、直前回に
行われた一連の計数過程においてはかり取られた最終は
かり取り個数であることを特徴とする特許請求の範囲第
1項に記載の電子計数はかり。
[Claims] means for calculating the average weight calculation means for calculating the above-mentioned information regarding the variation in sample weight and the maximum allowable additional number of samples that can be additionally counted with zero counting error from the information regarding the variation in sample weight and the above-mentioned number of samples; It has a means for calculating the number of additional samples from the average weight and a means for determining whether the number of additional samples exceeds the above-mentioned maximum allowable additional number of samples. An electronic counting scale configured such that the average weight calculating means updates the average weight of the samples each time a specific number is exceeded. (2) The specific number of samples to be additionally loaded has already been loaded before adding the sample. The electronic counting scale according to claim 1, characterized in that the specific number of samples to be additionally loaded is the final number counted in each preceding series of counting processes. The electronic counting scale according to claim 1, wherein the specified number of samples to be additionally loaded is the maximum value of the number of samples measured. The electronic counting scale according to claim 1, characterized in that it is the final number of items measured in the counting process.
JP13956183A 1983-07-29 1983-07-29 Electronic counting scale Pending JPS6031023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13956183A JPS6031023A (en) 1983-07-29 1983-07-29 Electronic counting scale

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13956183A JPS6031023A (en) 1983-07-29 1983-07-29 Electronic counting scale

Publications (1)

Publication Number Publication Date
JPS6031023A true JPS6031023A (en) 1985-02-16

Family

ID=15248128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13956183A Pending JPS6031023A (en) 1983-07-29 1983-07-29 Electronic counting scale

Country Status (1)

Country Link
JP (1) JPS6031023A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01184419A (en) * 1988-01-18 1989-07-24 Shimadzu Corp Electronic counting scale
EP0325439A2 (en) * 1988-01-18 1989-07-26 Shimadzu Corporation Electronic counting balance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563719A (en) * 1978-11-09 1980-05-14 Tomohide Sagara Meter for counting
JPS57133321A (en) * 1981-02-10 1982-08-18 Ishida Scales Mfg Co Ltd Weighing method
JPS5855821A (en) * 1981-09-30 1983-04-02 Shimadzu Corp Electronic counting scale

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5563719A (en) * 1978-11-09 1980-05-14 Tomohide Sagara Meter for counting
JPS57133321A (en) * 1981-02-10 1982-08-18 Ishida Scales Mfg Co Ltd Weighing method
JPS5855821A (en) * 1981-09-30 1983-04-02 Shimadzu Corp Electronic counting scale

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01184419A (en) * 1988-01-18 1989-07-24 Shimadzu Corp Electronic counting scale
EP0325439A2 (en) * 1988-01-18 1989-07-26 Shimadzu Corporation Electronic counting balance

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