JP2004132940A - Analysis method and analysis apparatus of liquid - Google Patents
Analysis method and analysis apparatus of liquid Download PDFInfo
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- JP2004132940A JP2004132940A JP2002328894A JP2002328894A JP2004132940A JP 2004132940 A JP2004132940 A JP 2004132940A JP 2002328894 A JP2002328894 A JP 2002328894A JP 2002328894 A JP2002328894 A JP 2002328894A JP 2004132940 A JP2004132940 A JP 2004132940A
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【0001】
【発明の属する技術分野】本発明は、水溶液を中心にあらゆる液体の水質ないし性状の分析装置に係わる。
【0002】
【従来の技術】水を中心に液体を考えても、天然水には、雨水、河川水、湖沼水、地下水、湧水、温泉水、無機酸性水、塩水、海水などがある。これに対し、植物からとった果汁や樹液植物のしぼり汁などの天然由来のものがあり、さらに発酵させて作ったアルコールや酢、酵素液などの加工して作った液体もあった。動物で言えば牛乳や羊ややぎの乳があった。液体といっても実に様々であり、これまでは、これらの液体を、同一の方法で、測定しその液体が何の液体であるか、どのような性質をもっているのかを判別する分析方法はなかった。
【0003】
たとえば、水の物理的は性質としては、「比重、密度」「水蒸気圧」「沸点」「蒸発熱」「融解熱」「比熱」「熱伝導率」「表面張力」「誘電率」、そして「pH」「酸化還元電位」などが従来の測定技術エリアに含まれている。これらの測定によって被測定液体の性状分析はできるが、たとえば物性の値が同一だからといって、同一の液体であるということにはならない。あくまでそれらの液体がどのような物性をもっているのかの分析的な一側面を見るための一方法でしかなかった。
【0004】
【発明が解決しようとする課題】たとえば、目の前に持ち出された液体がどのような種類の液体であるのかを判別することができると、きわめて便利である。水で言えば浄水や活性水、そしてミネラル水ブームである。目の前に持ち出された水が、単なる水道水を浄水器に通して造った水なのか、採取が困難で貴重なミネラルウォーターであるのかを判別できると消費者に責任をもって販売できることになる。ひとりひとりの人間の指紋は、すべて異なる。指紋によって一人一人が判別できる。そこまでいかなくても、水の種類や産地、加工のされ方などのちがいによって、水が判別できるようになれば、色々な意味で大変有用なのである。
【0005】
【課題を解決するための手段】同一の液体であっても、印加する信号の周波数のちがいによって、印加信号と印加したあとに取り出した信号との位相差が異なり、任意の時間間隔で印加した一定エリアの可変周波数信号の下で、液体ごとに独特のパターンを描くことがわかった。この技術を利用することにより、液体ごとに描かれるパターンが異なり、パターンを見る事によって液体を特定する事ができ、上述した解決課題を解決した。
【0006】
【発明の具体的な説明】以下図面で本発明を説明する。図1は本発明による液体の分析方法と分析装置を説明するための基本ブロック図である。(2)は可変周波数発生手段(4)は液体測定部(6)は検出手段(8)は演算手段(10)は表示手段である。この可変周波数発生手段(2)では、たとえば当初1khzの周波数の信号を出力線(12)と出力線(14)から出力する。その上で1msごとに、周波数値を加算し変化させる。4096ステップで最後は4352khzの周波数の信号を出力する。
【0007】
出力された信号は、出力線(14)から電極(16)に伝送され、液体測定部(4)の液体(5)を介して電極(18)でとりだされ入力線(20)におくられる。検出手段(6)では出力線(12)を通して伝送されてくる可変周波数発生手段(2)から出力される信号と、この入力線(20)を通して送られてくる信号の両方の信号を検出する。
【0008】
検出した両信号は演算手段(8)で比較、演算される。出力線(12)から送られてくる信号をA信号とし、入力線(20)送られてくる信号をA′信号とすると、A′信号は被検査液体を通過する分、遅れがでる。正確に言うと被検査液体に導電性の不純物があればあるほどその分抵抗で働きおくれが出る。従って純水の場合はこの遅れはでない。この変化は、電圧や電流の変化として捉えるとき入力線(20)から送られてくる信号を検出するだけでも検出することはできるが、その変化値自体極めて微小であるため、A信号とA′信号との差をとり、変化値のみを際立たせ、他の要因による変動を排除した。
【0009】
この結果を表示手段(10)で表示するようにした。そして表示手段(10)では、横軸に可変して行く周波数値をとり、縦軸に変化値(電圧係数)をとった。図2は、このような測定の結果、ある水道水(X1とX2)について表示手段(10)で描き出した表示例である。同じ水道水ではあるが、河川の源流や途中の流域の様子が異なり、工業用水や家庭雑杯水などが流れ込む様子も異なっているため実線のX1と破線のX2とでは明らかにことなっている。実験結果、電極の素材を同一のものを使用し、電極の間隔を同一にして、図1に示した測定方法で測定すると、同一の液体について同じパターンを描く事がわかった。液体の種類によって異なった表示パターンを描くこと。またそのパターンの抽出は、再現性のあることが確かめられた。
【0010】
被検査液体に浸漬した2本の電極間の抵抗値はコンデンサとして考えれば1/2πfc1としてコイルとして考えれば1/2πfL1として考えられる。これらの複合したa1×1/2πfc1+b1×1/2πfL1値が液体として抵抗値になり、特定周波数による共振作用なども加味されて、液体ごとの独自パターンが作られたと考えられる。
【0011】
すでに様々な液体を使用し、本発明による測定実験を繰り返し、例えばお酒、酢・・・など液体の種類ごとに産地や製造メーカーの上での違いはあるものの表示パターンの上で類似性を示す事がわかってきた。それらのなかで、本物の味とか標準品となるもののパターンを整理し、コンピューターにパターン認識させれば、新たに測定した液体の品質などもビジュアルに認識する事ができることになる。
【0012】
図3は、本発明による図1に示した液体測定部(4)の詳細図で、図3(A)は断面図、図3(B)は上面図である。図1と同一番号は、同一の内容を示す。(22)は支持台(23)は持上部(24)はガイド部材(26)(28)は絶縁被膜(30)は外装ケース台である。(32)(34)は、リード線である。
【0013】
測定するときには、持上部(23)を持って、支持台(22)を上方にスライドさせる。その上で、ガラスケース(21)を図面手前の方に取り出し、ここに所定の液体(3)を所定量注入し、元の位置に装着する。その上で、持上部(23)を下方にスライドさせ支持台(22)をもとの位置に戻し、電極(16)と電極(18)を液体(3)中に挿入する。この電極(16)(18)は例えば直径0,3cmで、材質は黄銅ベースに金メッキを施し7cmの長さにしたものを使っている。この電極(16)(18)には絶縁被膜(26)(28)がそれぞれ取り付けられ、たとえば一端側から2cmが液体に接触するようにしそれ以外は接触しないようにしている。このためこの接触部をこえて絶縁被膜の部分が浸漬するように液体(3)をいれるようにすれば、液体(3)に浸漬し対抗する電極部分は2cmで一定としている。
【0014】
このようにして図1の可変周波数発生手段(2)からの出力線(14)と結線されたリード線(32)から、電極(16)を通して、所定の可変周波数をもつ信号が液体(3)に印加され、液体(3)を介してその信号を電極(18)で受信し、受信した信号は電極(18)からリード線(34)を介して図1の出力線(20)に送られる。
【0015】
図4は本発明による電気回路部の1実施例である。(36)はスイッチ入力部(38)はクロック発信部(40)は可変周波数制御部(42)は可変周波数発信器(44)は液体測定部(46)は検出手段(48)はA/D変換部(50)はコンピューター制御・操作・表示部である。
【0016】
コンピューター制御・操作・表示部(50)はたとえばパーソナルコンピューターと任意の分析用ソフトウェア、そして表示部と操作部からなる。この操作スイッチが入ると入力端子(52)からの信号が入り、スイッチ入力部(36)で作成されたスタート信号が出力線(54)を介して可変周波数制御部(40)の12ビットカウンター(55)に送られる。12ビットカウンター(55)ではクロック発信部(38)から出力されたクロック信号が出力線(56)を介して送られているため、このクロック信号によってカウント値がカウントアップされる。
【0017】
この12ビットカウンタ(55)に、このスタート信号が入力されるとそのカウンタの値が「0」から「4095」までカウントされ、「4095」がカウントされたつぎのクロック信号によってMSBの出力線(60)が出力反転するとカウンタ(58)で検出し、12ビットカウンタ(55)のカウントを停止する。
【0018】
12ビットカウンタ(55)からのカウント値は、可変周波数発信器(42)に送られ、可変周波数発信機器(42)からは、たとえば1ステップが1khzで4096ステップに変化される発振信号が出力される。そのときには、可変周波数発信器(42)から出力線(62)に1khzから、4096Mhzまでの信号が10msの間隔で送られる。
【0019】
従って液体測定部(44)の液体(64)には、そうした可変周波数が電極(70)に順次印加され、液体(64)を介することによって電気的な変化を受けた信号が電極(72)から入力線(66)を介して検出部(68)に送られる。
【0020】
検出部(68)では電極(70)と電極(72)間に得られる信号の時間差を検出信号として検出し、出力線(72)に送ってもよいが、両電極間の電圧変化や電流変化を検出してもよい。ここで検出した信号は出力線(72)を介してA/D変換機(48)に送られA/D変換され出力端子(74)に送られる。一方出力端子(76)からはクロック発振部(38)から発振するクロック信号が送られ、この両出力端子から出力される信号を受けてコンピュータ制御・操作・表示部では、変化値を演算処理し、表示するようにしている。
【0021】
図5は、本題による発明の方式および発明装置を使用して、異なる3種類の液体肥料を測定し、それらを実践、破線、一店鎖線で示した。含有する微量成分の違いによって、波形に差異が生じている。これらはそれぞれに再現性があることも分かった。現状ではどのような成分あるいは生成過程での違いが、波形上の差異として現出するかについて、研究中ではあるが、液体の微量成分の違いがこうした波形の上での差異として現れてくるという事実は大きい。
【0022】
このように本願の発明の液体分析装置によれば、水溶液等の液体に微量に含まれる物質等の違いをグラフなどによって具体的に表すことができ、水溶液等の液質の微妙な差異の判別や、その液体に他の液体が混入した場合の判別などを的確に行うことができるものである。そしてこのような判別を大掛かりな装置や検査に熟練した技術者等を要することなく行う事ができ、これらの液体の判別をきわめて簡易の手法で行うことができるものである。
【0023】
さらに、この本願の発明の液体分析装置を利用することによって、例えば以下に示すような液体に対する種種の分析や測定等を行うことができる。
【0024】
1.水質の性格分析
水質のイオンの安定度やその特性をグラフや数値によって管理することができる。不純物がふくまれているか、また水の硬質をある程度予測できる。
2.水溶液の時間的変化の測定
上述の測定を継続して行う事により、時間経過による水溶液の安定度等の測定を行う事ができる。
3.水溶液の温度変化の測定
温度の変化、室温の変化や煮沸や凍結した後の変化などを測定して、水質の状態を検知できる。
4.他の物質や磁場などによる影響
浄水器などによる水質の変化を捉えることができる。
5.水分を含むものの性格分析
植物の葉や根などの測定分析や尿による測定分析を行うことができる。その結果により有機処理の判定や身体の状態の判定に使用できる。
6.美容関係や酒造メーカー、電子部品機器、食品メーカーなどの水を使用しているあらゆる会社の品質管理に簡易的に使用できる。また河川や湖沼などの水質汚染の管理などにも使用できる。
【0025】
また、上述の図2、図5において、波形に変化を生じる周波数は、含まれる物質等に関係しているものと思われる。従ってこれらを分析する事によって物質の特定を行う事も可能と考えられるが、現状ではそこまでの実験は行っていない。しかしながら水質の違いや変化等を知るためには、波形の変化が生じることだけで充分であり、本発明による液体分析の装置を用いる事によってこれらの判別を有効に行うことができるものである。
【0026】
なお本発明は、上述の説明した実施の形態に限定されるものではなく、本発明の精神を逸脱することなく用いれられた分析方法や分析装置に対し適用され、種々の変化が可能とされるものである。
【発明の効果】以上のように、本発明によれば液体に可変周波数信号を印加する事により、その電気的な変化値を印加した周波数に対応させてみる事により、その液体がもつ独自のパターン図を得る事ができた。このパターン図をその液体を判別する判別図として利用すれば、液体を判別する事ができる。また判別図と液体の性状を関連させ、液体の性状分析に利用すれば他分野での利用効果は大きい。
【図面の簡単な説明】[図1]は、本発明を説明するための一実施例のブロック図である。
[図2]は、本発明による液体分析装置で描き出した水道水の波形図である。
[図3]は、本発明による図1に示した実施例の液体測定部の詳細図である。Aは断面図 Bは上面図である。
[図4]は、本発明による液体分析装置の電子回路の一実施例図である。
[図5]は、本発明による液体分析装置で描き出した3種類の液体肥料の波形図である。
【符号の説明】
2、42・・・可変周波数発振手段 4、44・・・液体測定部 16,18,70,72・・・電極 6、68・・・検出手段 8・・・演算手段
10・・・表示手段[0001]
BACKGROUND OF THE
[0002]
2. Description of the Related Art Natural water includes rainwater, river water, lake water, groundwater, spring water, hot spring water, inorganic acid water, salt water, seawater, and the like, even if liquid is considered as the center. On the other hand, there are naturally-derived products such as fruit juices taken from plants and squeezed juices of sap plants, and there are also liquids made by processing alcohols, vinegars and enzyme solutions made by fermentation. Speaking of animals, there was milk, sheep and goat milk. There are so many liquids, so far, there is no analytical method to measure these liquids by the same method and determine what kind of liquid they are and what kind of properties they have. Was.
[0003]
For example, the physical properties of water are "specific gravity, density", "water vapor pressure", "boiling point", "heat of evaporation", "heat of fusion", "specific heat", "thermal conductivity", "surface tension", "dielectric constant", and " pH, “redox potential” and the like are included in the conventional measurement technology area. The properties of the liquids to be measured can be analyzed by these measurements, but, for example, the same physical property value does not mean that the liquids are the same. It was only a way to see an analytical aspect of the properties of these liquids.
[0004]
For example, it is very convenient if it is possible to determine what kind of liquid is taken out in front of the eyes. Speaking of water, purified water, activated water, and mineral water boom. If it is possible to determine whether the water taken out in front of you is pure water made by passing tap water through a water purifier or mineral water that is difficult to collect and valuable, you will be able to sell to consumers responsibly. Each human fingerprint is different. Individuals can be identified by fingerprints. Even if you don't go that far, it would be very useful in many ways if water could be distinguished depending on the type of water, the place of production, and the way it was processed.
[0005]
The phase difference between the applied signal and the signal extracted after the application differs depending on the frequency of the applied signal even when the same liquid is used, and the liquid is applied at an arbitrary time interval. It was found that each liquid draws a unique pattern under a constant area variable frequency signal. By using this technology, the pattern drawn for each liquid is different, and the liquid can be specified by looking at the pattern, thus solving the above-mentioned problem.
[0006]
BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a basic block diagram for explaining a liquid analysis method and an analyzer according to the present invention. (2) is a variable frequency generating means (4), a liquid measuring unit (6), a detecting means (8), a calculating means (10) is a display means. In the variable frequency generating means (2), for example, a signal having a frequency of 1 kHz is initially output from the output line (12) and the output line (14). Then, the frequency value is added and changed every 1 ms. Finally, a signal having a frequency of 4352 kHz is output in 4096 steps.
[0007]
The output signal is transmitted from the output line (14) to the electrode (16), is taken out by the electrode (18) via the liquid (5) of the liquid measuring section (4), and is sent to the input line (20). . The detecting means (6) detects both the signal transmitted from the variable frequency generating means (2) transmitted through the output line (12) and the signal transmitted through the input line (20).
[0008]
The detected signals are compared and calculated by the calculating means (8). Assuming that the signal sent from the output line (12) is the A signal and the signal sent from the input line (20) is the A 'signal, the A' signal is delayed by the amount that passes through the liquid to be inspected. To be precise, the more conductive impurities are present in the liquid to be inspected, the more work is done by the resistance. Therefore, in the case of pure water, this delay is not present. This change can be detected simply by detecting a signal sent from the input line (20) when it is considered as a change in voltage or current. However, since the change value itself is extremely small, the A signal and A ' The difference from the signal was taken to highlight only the change value, and the fluctuation due to other factors was excluded.
[0009]
The result is displayed on the display means (10). In the display means (10), the horizontal axis indicates the variable frequency value, and the vertical axis indicates the change value (voltage coefficient). Figure 2 is a result of such a measurement, a display example in which portrays a certain tap water (X 1 and X 2) the display means (10). It is in the same tap water, but differ in how the river origin and middle basin, clearly different in the X 1 and the dashed X 2 in solid lines for such industrial water and domestic Zatsuhai water is how well different flowing ing. As a result of the experiment, when the same material was used for the electrodes and the intervals between the electrodes were the same, and the measurement was performed by the measuring method shown in FIG. 1, it was found that the same pattern was drawn for the same liquid. To draw different display patterns depending on the type of liquid. It was also confirmed that the extraction of the pattern was reproducible.
[0010]
The resistance value between the two electrodes immersed in the liquid to be inspected is 1 / πfc1 when considered as a capacitor, and ππfL1 when considered as a coil. It is considered that the composite value of a 1 × 1 / 2πfc1 + b 1 × 1 / 2πfL1 becomes a resistance value as a liquid, and a unique pattern for each liquid is created in consideration of a resonance effect at a specific frequency.
[0011]
Already using various liquids, repeating the measurement experiment according to the present invention, for example, alcohol, vinegar, etc ... I know what to show. By organizing the patterns of authentic tastes and standard items among them, and letting the computer recognize the patterns, it is possible to visually recognize the quality of the newly measured liquid.
[0012]
FIG. 3 is a detailed view of the liquid measuring section (4) shown in FIG. 1 according to the present invention. FIG. 3 (A) is a sectional view, and FIG. 3 (B) is a top view. The same numbers as those in FIG. 1 indicate the same contents. Reference numeral (22) denotes a support (23) which has a lifting portion (24); a guide member (26); and (28) an insulating coating (30) which is an outer case base. (32) and (34) are lead wires.
[0013]
When measuring, the support table (22) is slid upward with the lifting section (23). After that, the glass case (21) is taken out toward the front of the drawing, a predetermined amount of the predetermined liquid (3) is injected therein, and the glass case (21) is mounted at the original position. Then, the supporting part (22) is returned to the original position by sliding the lifting part (23) downward, and the electrodes (16) and the electrodes (18) are inserted into the liquid (3). The electrodes (16) and (18) have a diameter of, for example, 0.3 cm, and are made of brass base plated with gold to have a length of 7 cm. Insulating films (26) and (28) are attached to the electrodes (16) and (18), for example, so that 2 cm from one end side is in contact with the liquid, and the others are not. For this reason, if the liquid (3) is added so that the portion of the insulating film is immersed beyond the contact portion, the electrode portion immersed in the liquid (3) and opposed thereto is fixed at 2 cm.
[0014]
Thus, a signal having a predetermined variable frequency is supplied from the lead wire (32) connected to the output line (14) from the variable frequency generating means (2) of FIG. 1 through the electrode (16) to the liquid (3). The signal is received at the electrode (18) via the liquid (3), and the received signal is sent from the electrode (18) via the lead (34) to the output line (20) of FIG. .
[0015]
FIG. 4 shows an embodiment of the electric circuit section according to the present invention. (36) is a switch input unit (38) is a clock transmission unit (40) is a variable frequency control unit (42) is a variable frequency transmitter (44) is a liquid measurement unit (46) is a detection unit (48) is an A / D. The conversion unit (50) is a computer control / operation / display unit.
[0016]
The computer control / operation / display unit (50) includes, for example, a personal computer and arbitrary analysis software, and a display unit and an operation unit. When the operation switch is turned on, a signal from the input terminal (52) is turned on, and a start signal generated by the switch input unit (36) is transmitted via the output line (54) to the 12-bit counter (40) of the variable frequency control unit (40). 55). In the 12-bit counter (55), since the clock signal output from the clock transmission section (38) is transmitted via the output line (56), the count value is counted up by this clock signal.
[0017]
When the start signal is input to the 12-bit counter (55), the value of the counter is counted from "0" to "4095", and the MSB output line ( The counter (58) detects that the output of (60) is inverted, and stops counting by the 12-bit counter (55).
[0018]
The count value from the 12-bit counter (55) is sent to the variable frequency transmitter (42), and the variable frequency transmitter (42) outputs, for example, an oscillation signal in which one step is changed to 4096 steps at 1 kHz. You. At that time, a signal from 1 kHz to 4096 Mhz is sent from the variable frequency oscillator (42) to the output line (62) at intervals of 10 ms.
[0019]
Accordingly, such a variable frequency is sequentially applied to the electrode (70) to the liquid (64) of the liquid measuring section (44), and a signal that has been electrically changed by passing through the liquid (64) is transmitted from the electrode (72). It is sent to the detection unit (68) via the input line (66).
[0020]
The detecting unit (68) may detect a time difference between signals obtained between the electrode (70) and the electrode (72) as a detection signal and send it to the output line (72). May be detected. The signal detected here is sent to an A / D converter (48) via an output line (72), A / D converted, and sent to an output terminal (74). On the other hand, a clock signal oscillating from a clock oscillating unit (38) is sent from an output terminal (76), and a signal output from both output terminals receives a signal, and a computer control / operation / display unit calculates a change value. , To be displayed.
[0021]
FIG. 5 shows the measurement of three different types of liquid fertilizers using the inventive method and the inventive apparatus according to the present subject, and they are shown by practice, broken lines and chain lines. Waveforms differ due to differences in the contained trace components. These were also found to be reproducible. At present, research is underway to determine what components or differences in the production process appear as waveform differences, but it is said that differences in trace components of liquids appear as such waveform differences. The fact is great.
[0022]
As described above, according to the liquid analyzer of the invention of the present application, differences in substances and the like contained in a trace amount in a liquid such as an aqueous solution can be concretely represented by a graph or the like, and determination of a delicate difference in liquid quality of an aqueous solution or the like can be performed. In addition, it is possible to accurately determine whether another liquid is mixed with the liquid. Such a determination can be made without the need for a large-scale apparatus or a technician skilled in inspection, and the determination of these liquids can be made by a very simple method.
[0023]
Further, by using the liquid analyzer of the present invention, for example, various kinds of analysis, measurement, and the like can be performed on a liquid as described below.
[0024]
1. Water quality analysis The stability and characteristics of ions in water quality can be managed by graphs and numerical values. Presence of impurities and hardness of water can be predicted to some extent.
2. Measurement of Temporal Change of Aqueous Solution By performing the above measurement continuously, it is possible to measure the stability of the aqueous solution over time.
3. Measurement of the temperature change of the aqueous solution The change in the temperature, the change in the room temperature, the change after boiling or freezing, and the like can be measured to detect the state of the water quality.
4. The influence of other substances and magnetic fields can be used to capture changes in water quality due to water purifiers.
5. Characteristic analysis of those containing water Measurement analysis of leaves and roots of plants and measurement analysis using urine can be performed. The result can be used to determine the organic treatment and the state of the body.
6. It can be easily used for quality control of beauty-related companies, breweries, electronic component equipment, food manufacturers, and other companies that use water. It can also be used to control water pollution in rivers and lakes.
[0025]
In addition, in FIGS. 2 and 5 described above, the frequency at which the waveform changes is considered to be related to the contained substances and the like. Therefore, it is thought that it is possible to identify the substance by analyzing them, but at present, no experiments have been conducted so far. However, in order to know a difference or a change in water quality, it is sufficient that only a change in the waveform occurs, and these determinations can be effectively performed by using the liquid analysis apparatus according to the present invention.
[0026]
It should be noted that the present invention is not limited to the above-described embodiment, and is applicable to an analysis method and an analyzer used without departing from the spirit of the present invention, and various changes can be made. Things.
As described above, according to the present invention, by applying a variable frequency signal to a liquid, the electrical change value is made to correspond to the applied frequency, whereby the unique characteristic of the liquid is obtained. A pattern diagram was obtained. If this pattern diagram is used as a discrimination diagram for discriminating the liquid, the liquid can be discriminated. Further, if the discrimination diagram is associated with the properties of the liquid and used for analyzing the properties of the liquid, the effect of use in other fields is great.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of an embodiment for explaining the present invention.
FIG. 2 is a waveform diagram of tap water drawn by the liquid analyzer according to the present invention.
FIG. 3 is a detailed view of the liquid measuring unit of the embodiment shown in FIG. 1 according to the present invention. A is a sectional view and B is a top view.
FIG. 4 is an embodiment of an electronic circuit of the liquid analyzer according to the present invention.
FIG. 5 is a waveform diagram of three types of liquid fertilizer drawn by the liquid analyzer according to the present invention.
[Explanation of symbols]
2, 42 ... variable frequency oscillating means 4, 44 ...
Claims (4)
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JP2002328894A JP3961930B2 (en) | 2002-10-08 | 2002-10-08 | Liquid property analysis method and property analyzer |
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JP2002328894A JP3961930B2 (en) | 2002-10-08 | 2002-10-08 | Liquid property analysis method and property analyzer |
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JP2004132940A true JP2004132940A (en) | 2004-04-30 |
JP2004132940A5 JP2004132940A5 (en) | 2007-02-01 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006017614A (en) * | 2004-07-02 | 2006-01-19 | Koden Electronics Co Ltd | Device and method for determining liquid |
JP2009080025A (en) * | 2007-09-26 | 2009-04-16 | Toshiki Nakajima | Method and apparatus for detecting electrical characteristic of solution |
CN103743762A (en) * | 2013-12-23 | 2014-04-23 | 深圳市柳迪科技有限公司 | Device for detecting harmful impurities in liquid milk |
-
2002
- 2002-10-08 JP JP2002328894A patent/JP3961930B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006017614A (en) * | 2004-07-02 | 2006-01-19 | Koden Electronics Co Ltd | Device and method for determining liquid |
JP4620397B2 (en) * | 2004-07-02 | 2011-01-26 | 株式会社光電製作所 | Liquid discrimination device and method |
JP2009080025A (en) * | 2007-09-26 | 2009-04-16 | Toshiki Nakajima | Method and apparatus for detecting electrical characteristic of solution |
CN103743762A (en) * | 2013-12-23 | 2014-04-23 | 深圳市柳迪科技有限公司 | Device for detecting harmful impurities in liquid milk |
CN103743762B (en) * | 2013-12-23 | 2016-05-04 | 深圳市柳迪科技有限公司 | Liquid milk objectionable impurities checkout gear |
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