JPH02310449A - Instrument for measuring coexistence rate - Google Patents
Instrument for measuring coexistence rateInfo
- Publication number
- JPH02310449A JPH02310449A JP13344789A JP13344789A JPH02310449A JP H02310449 A JPH02310449 A JP H02310449A JP 13344789 A JP13344789 A JP 13344789A JP 13344789 A JP13344789 A JP 13344789A JP H02310449 A JPH02310449 A JP H02310449A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- detecting
- arithmetic processing
- amplifier
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 230000000630 rising effect Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims abstract 3
- 239000000203 mixture Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000032683 aging Effects 0.000 abstract description 5
- 238000002834 transmittance Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 238000010186 staining Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 description 8
- 230000007423 decrease Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は混在した2種類の物質の混在率を測定する装置
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for measuring the mixing ratio of two types of substances mixed together.
従来の技術
2種類の物質の混在率を求めるとき、その混在した物質
を1粒ずつセンサーで、ある特性を計測し、その特性で
一定のスレッシユホールドを絶対値的に決めてやり、そ
のスレッシュホールド値より大きいものがn個、小さい
ものがm個としたとき、その混在率はn/(n+m)又
はm/(n+m)で表される。Conventional technology When determining the mixing ratio of two types of substances, a sensor measures a certain characteristic of the mixed substance one by one, and then determines a certain threshold based on that characteristic as an absolute value. When there are n items larger than the hold value and m items smaller than the hold value, the mixing ratio is expressed as n/(n+m) or m/(n+m).
しかしながら、スレッシュホールド値が絶対値であるた
め、検出レベルでの誤差が発生したとき判定誤りが生じ
る事が多々あった。However, since the threshold value is an absolute value, a judgment error often occurs when an error occurs in the detection level.
具体的には、例えば光センサーにより物質検出する場合
では光センサーの感度の経年変化や汚れ等により検出レ
ベルが低下し、混在率が正しく測定できなくなる等の心
配があった。Specifically, for example, when detecting a substance using an optical sensor, there is a concern that the detection level may decrease due to changes in the sensitivity of the optical sensor over time, dirt, etc., making it impossible to accurately measure the mixture rate.
発明が解決しようとする課題
本発明は、検出レベルが経年変化や汚れ等で変化しても
安定した混在率が測定できるよりにする事を目的として
いる。Problems to be Solved by the Invention The present invention aims to make it possible to measure a stable mixture rate even if the detection level changes due to aging, dirt, etc.
課題を解決するための手段
1粒ずつセンサーで検出した信号は通常微小で、センサ
ー上を物質が通過する瞬間、信号は極大値(又は極小値
)を示す。そこで、本発明は、センサーからの信号を増
幅する増幅器と、この信号波形の立上りを検出する検出
器と、この検出信号によシゲートを開くトリガ信号とし
かつ電圧レベルを記憶するピークホールド回路と、この
電圧レベルをディジタル信号に変換する変換器と、この
ディジタル信号と後続の演算処理部よシフイードバック
された出力信号とで大小判定を行なう判定回路と、前記
ディジタル信号から相対値を演算する演算処理回路で構
成としている。Means for solving the problem The signal detected by a sensor for each grain is usually minute, and the moment the substance passes over the sensor, the signal shows a maximum value (or minimum value). Therefore, the present invention provides an amplifier that amplifies the signal from the sensor, a detector that detects the rising edge of this signal waveform, and a peak hold circuit that uses this detection signal as a trigger signal to open the switch gate and stores the voltage level. A converter that converts this voltage level into a digital signal, a determination circuit that determines the magnitude of this digital signal and an output signal that has been shifted back from a subsequent arithmetic processing unit, and an arithmetic processing unit that calculates a relative value from the digital signal. It consists of a circuit.
すなわち、判定・演算処理回路では2種類の物質の混在
率を求めるためのスレッシュホールド値を絶対値とせず
、相対的に変化させてやるという手段を用いて検出レベ
ルが経年変化や汚れ等で変化しても、安定した混在率が
測定できるようにしている。In other words, the judgment/arithmetic processing circuit does not set the threshold value for determining the mixing ratio of two types of substances as an absolute value, but uses a method of relatively changing the threshold value to detect changes in the detection level due to aging, dirt, etc. This allows for stable mixing ratios to be measured.
作用
ム種とB種の混在した物質の特性を一粒ずつセンサーで
検出し、検出信号を増幅器に接続する。この増幅された
検出信号は時間経過に伴い、A種ならV、、、B種なら
V□というピーク電圧信号を次々に発生させる。これら
のピーク電圧の立上り信号を立上り検出回路で検出し、
ピークホールド回路でピーク電圧を瞬時保持する。これ
らは次段のアナログ/ディジタル変換時間を確保するた
めの処理である。A sensor detects the characteristics of the substance containing the active species and B species one by one, and the detection signal is connected to an amplifier. As time passes, this amplified detection signal successively generates peak voltage signals of V for type A, V□ for type B, etc. These peak voltage rising signals are detected by a rising detection circuit,
A peak hold circuit instantly holds the peak voltage. These are processes to ensure the next stage analog/digital conversion time.
アナログ/ディジタル変換は1ピーク波形毎すべて行な
う。ディジタル信号は比較回路に転送し、スレッシュホ
ールドレベルV、で大小比較しながら一定量あるいは一
定期間過去のディジタル信号の中から最も大きいもの(
vM□X)と最も小さいもの(V□、1)1−抽出し、
演算処理回路に伝達される。All analog/digital conversion is performed for each peak waveform. The digital signals are transferred to a comparator circuit, and compared at a threshold level V, the largest digital signal of a certain amount or period of time is selected (
vM□X) and the smallest one (V□, 1) 1-extract;
It is transmitted to the arithmetic processing circuit.
予備実験等テ求メタv、、 > V、B(V、、 <
V、B)(7)関係ヨク、最大vPi = vWAX、
最小’/、B= V、、。Preliminary experiments etc. required meta v,, > V, B(V,, <
V, B) (7) Relationship, maximum vPi = vWAX,
min'/,B=V,,.
(f&犬V、、 = VMAx、最小V、、 = V、
XN) +7)等価式が成立するので、vPAとV、B
f判別するスレッシュホールドレベルVア全次の様に演
算・算出してやる。(f&dogV,, = VMAx, minimum V,, = V,
XN) +7) Since the equivalence formula holds, vPA and V, B
The threshold level for determining f is calculated as shown below.
V、 = a ・V、A、十β・vM!N (α+
β=1)上記の式でαとβは実験値でv、全決定する際
のvM&! ”” 7101間比率を表している。V, = a ・V, A, tenβ・vM! N (α+
β=1) In the above formula, α and β are experimental values v, and vM &! "" represents the ratio between 7101.
以上の演算で求めたVTf比較回路にフィードバックす
る。The VTf obtained by the above calculation is fed back to the comparison circuit.
これにより、v、は一定量、おるいは一定期間毎に更新
してやる事により、センサー出力が汚れ等で全体的に低
下しても、V、もまた同率で低下し相対的に変化するの
で検出レベルが経年変化や汚れ等で変化しても、安定し
た混在率が測定できる。As a result, by updating v by a certain amount or at regular intervals, even if the sensor output decreases overall due to dirt, etc., V also decreases at the same rate and changes relatively, so it can be detected. Even if the level changes due to aging or dirt, a stable mixture rate can be measured.
実施例
第1図に本発明の一実施例の回路を示しており、動作内
容は2種の混在するプラスティック片を混在率80%に
保つ事と混在率を表示する事でおる。Embodiment FIG. 1 shows a circuit according to an embodiment of the present invention, and its operation is to maintain the mixing ratio of two types of plastic pieces at 80% and to display the mixing ratio.
発光ダイオード1とホトトランジスタ2の間に混在率を
測定するプラスティック片3が通過する。A plastic piece 3 is passed between the light emitting diode 1 and the phototransistor 2 for measuring the mixing ratio.
このプラスティック片3に、光の透過率の異なる2種の
プラスティック片3が雇在している場合、つぎの動作で
混在率を求めている。When two types of plastic pieces 3 having different light transmittances are present in this plastic piece 3, the mixing ratio is determined by the following operation.
ホ))ランラスタ2等の検出部の出力をオペアンプ4等
の増幅部で増幅し、ゲート回路よジなる立上シ検出全立
上り検出回路6で行ない、ム/D変換開始信号を発生さ
せるとともに、電圧レベル全記憶するピークホールド回
路6に伝えている。e)) The output of the detection section such as the run raster 2 is amplified by an amplifier section such as an operational amplifier 4, and is carried out by a rise detection full rise detection circuit 6, which is a gate circuit, to generate a MU/D conversion start signal. It is transmitted to a peak hold circuit 6 which stores all voltage levels.
増幅部で増幅したピーク電圧はこのピークホールド回路
6で保持し、ム/Dコンノ(−夕付きのマイクロコンピ
ュータ7でム/D変換した後、内部で。The peak voltage amplified by the amplifier section is held by this peak hold circuit 6, and after being subjected to Mu/D conversion by a microcomputer 7 equipped with a Mu/D converter (-), it is internally converted.
比較判定する比較判定回路、演算処理する演算処理回路
で信号処理される。Signals are processed by a comparison/determination circuit that performs comparison and determination, and an arithmetic processing circuit that performs arithmetic processing.
演算・処理は次のように行なう。Calculations and processing are performed as follows.
ソシテ、マイクロコンピュータT内のメモリ部に記憶し
ている1000粒毎のデーターの中から最大ピーク電圧
V。Xと最小ピーク電圧vMINを読み出す。事前の調
査で、上記の2種のプラスティック片は光透過率特性に
よυ、スレッシュホールドレベルV、eVM、工とvM
l)lの中間に設定すればよい事が判っているため、v
、の算出は、v=o、6xv +o、sxvつ□。Maximum peak voltage V from the data for every 1000 grains stored in the memory section of the microcomputer T. Read out X and the minimum peak voltage vMIN. According to preliminary research, the above two types of plastic pieces have light transmittance characteristics of υ, threshold level V, eVM, and vM.
l) Since it is known that it should be set in the middle of l, v
The calculation of , is v=o, 6xv +o, sxv □.
テ菖ムX
で打ない、1000粒のデーターをこのV、で大小判定
してやる。I will use this V to judge the size of 1000 grains of data without hitting it with Tesamu X.
V、はこの後、1000粒毎に次々更新して相対的に変
化する。Thereafter, V is updated one after another every 1000 grains and changes relatively.
混在率はvTより大きい値のデーター数と小さい値のデ
ーター数で決定する。The mixing ratio is determined by the number of data with a value larger than vT and the number of data with a value smaller than vT.
混在率を算出したマイクロコンピュータ7は。The microcomputer 7 that calculated the mixing ratio is.
混在率を人に知らせる表示部8と2種のプラスティック
片の混在率’6so%に保つための制御回路9に信号を
送る。A signal is sent to a display unit 8 that informs the person of the mixing ratio and to a control circuit 9 that maintains the mixing ratio of the two types of plastic pieces at '6so%.
発明の効果
以上のように本発明によnば、混在する2つの物質を相
対検出する事により、経年変化や汚れに対して安定した
混在率を求める事ができるものである。Effects of the Invention As described above, according to the present invention, by relatively detecting two mixed substances, it is possible to obtain a stable mixing ratio against aging and dirt.
第1図は本発明の一実施例による混在率測定装置の回路
図である。
1・・・・・・発光ダイオード、2・・・・・・ホトト
ランジスタ、3・・・・・・被測定プラスティック片、
4・・・・・・オペアンプ、6・・・・・・立上り検出
回路、6・・・・・・ピークホールド回路、T・・・・
・・マイクロコンピュータ、8・・・・・・表示部、9
・・・・・・制御回路。
代理人の氏名 弁理士 粟 野 重 孝 ほか1名城
(
手続補正書
1事件の表示
2発明の名称
混在率測定装置
3補正をする者
事件との関係 特 許 出 願人
住 所 大阪府門真市大字門真1006番地名 称
(582)松下電器産業株式会社代表者 谷
井 昭 雄
4代理人 〒571
住 所 大阪府門真市大字門真1006番地松下電器
産業株式会社内
6補正の対象
明細書の発明の詳細な説明の欄
方式谷FIG. 1 is a circuit diagram of a mixture ratio measuring device according to an embodiment of the present invention. 1...Light emitting diode, 2...Phototransistor, 3...Plastic piece to be measured,
4... operational amplifier, 6... rise detection circuit, 6... peak hold circuit, T...
...Microcomputer, 8...Display section, 9
...control circuit. Name of agent: Patent attorney Shigetaka Awano and one other person
(Procedural amendment 1. Indication of the case 2. Name of the invention Mixed rate measuring device 3. Person making the amendment Relationship with the case Patent applicant address 1006 Kadoma, Kadoma City, Osaka Prefecture Name
(582) Matsushita Electric Industrial Co., Ltd. Representative Tani
Akio I 4 Agent 571 Address 1006 Oaza Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Column for detailed description of the invention in the specification subject to the 6th amendment
Claims (1)
の立上りを検出する検出器と、この検出信号によりゲー
トを開くトリガ信号としかつ電圧レベルを記憶するピー
クホールド回路と、この電圧レベルをディジタル信号に
変換する変換器と、このディジタル信号と後続の演算処
理部よりフィードバックされた出力信号とで大小判定を
行なう判定回路と、前記ディジタル信号から相対値を演
算する演算処理回路とで構成した混在率測定装置。An amplifier that amplifies the signal from the sensor, a detector that detects the rising edge of this signal waveform, a peak hold circuit that uses this detection signal as a trigger signal to open the gate and stores the voltage level, and converts this voltage level into a digital signal. A mixture ratio measurement system consisting of a converter to convert, a judgment circuit that judges the magnitude of this digital signal and an output signal fed back from a subsequent arithmetic processing section, and an arithmetic processing circuit that calculates a relative value from the digital signal. Device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13344789A JPH02310449A (en) | 1989-05-26 | 1989-05-26 | Instrument for measuring coexistence rate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13344789A JPH02310449A (en) | 1989-05-26 | 1989-05-26 | Instrument for measuring coexistence rate |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02310449A true JPH02310449A (en) | 1990-12-26 |
Family
ID=15104994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13344789A Pending JPH02310449A (en) | 1989-05-26 | 1989-05-26 | Instrument for measuring coexistence rate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02310449A (en) |
-
1989
- 1989-05-26 JP JP13344789A patent/JPH02310449A/en active Pending
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