JPH11108732A - Liquid level measuring equipment - Google Patents

Liquid level measuring equipment

Info

Publication number
JPH11108732A
JPH11108732A JP26622397A JP26622397A JPH11108732A JP H11108732 A JPH11108732 A JP H11108732A JP 26622397 A JP26622397 A JP 26622397A JP 26622397 A JP26622397 A JP 26622397A JP H11108732 A JPH11108732 A JP H11108732A
Authority
JP
Japan
Prior art keywords
urine
liquid
specific gravity
tank
measuring
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
JP26622397A
Other languages
Japanese (ja)
Inventor
Katsumi Ikegami
勝己 池上
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.)
Fuji Kogaku Kikai Kk
Original Assignee
Fuji Kogaku Kikai 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 Fuji Kogaku Kikai Kk filed Critical Fuji Kogaku Kikai Kk
Priority to JP26622397A priority Critical patent/JPH11108732A/en
Publication of JPH11108732A publication Critical patent/JPH11108732A/en
Pending legal-status Critical Current

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  • Investigating Or Analysing Biological Materials (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

PROBLEM TO BE SOLVED: To perform small precision measuring for a minimum liquid level to be detected by calculating the storage amount of a liquid tank based on the opening operation signal of a discharge opening/closing device and the detecting signal of a pressure sensor. SOLUTION: Pinch valves 16, 17 and 64 are controlled to be closed, and urine is poured into a urine tank 10. Pinch valves 26, 34 and 40 are closed. When a signal is outputted from a pressure sensor 18, the pinch valve 16 is opened, a measuring operation is simultaneously started by a central processing unit, the measuring is finished when the signal from the pressure sensor 18 disappears, and the pinch valve 16 is closed. The central processing units calculates the amount of urine by adding continuance time, a flow rate, correction value or the like. When a calculated urine amount reaches a specified level, the pinch valve 40, a suction pump 38 and a division pouring device 70 are properly controlled to collect samples. Then valve 26 is opened when the sampling operation is finished, urine other than a specific gravity measuring required amount is discharged to a discharge tank 24. When the liquid surface level of a specific gravity measuring tank 14 is constant and stable, the height of a specific gravity measuring float 20 and the output of a temperature sensor 30 are read by the central processing unit, the specific gravity value of urine is calculated, and by performing urine amount correction based on the specific gravity value, an accurate urine amount is calculated. Then, the valve 34 is controlled to be closed, and urine in the measuring tank is discharged to the tank 24. Then, a solenoid valve 60 is opened to start cleaning, and the process is finished after cleaning for specified time.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、液量測定装置、さらに
詳しくは、例えば尿量を非接触で自動的に測定するため
に適した液量測定装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid volume measuring device, and more particularly to a liquid volume measuring device suitable for automatically measuring, for example, non-contact urine volume.

【0002】[0002]

【従来の技術】液体量の測定は各種産業分野や医療分野
で頻繁に行われており、液体の性質や測定の目的によっ
て非接触で自動的に測定することが望ましかったり必須
である。例えば、患者から***された尿量は生理病理状
態を知る上で重要な情報であって、非接触で自動的に測
定することが強く望まれている。このような要望に対
し、特開平8−304140号公報においては、液体を
流入する投入受け槽の底部に導管の一端を連通開口し、
この導管を閉塞または開通制御するバルブを設け、前記
投入受け槽の底部のフロートスイッチを設け、このフロ
ートスイッチが浮上して出力される信号の継続時間を計
測する計時手段を設け、この計測された前記継続時間と
貫通状態で前記導管を通過する前記被測定液の予め測定
された流量とにより演算手段で前記被測定液の液量を演
算するように構成した液量測定装置を提案している。
2. Description of the Related Art The measurement of the amount of a liquid is frequently performed in various industrial fields and medical fields, and it is desirable or essential that the measurement be carried out automatically in a non-contact manner depending on the properties of the liquid and the purpose of the measurement. For example, the amount of urine excreted from a patient is important information for knowing the physiopathological state, and it is strongly desired to automatically measure it without contact. In response to such a demand, in Japanese Patent Application Laid-Open No. 8-304140, one end of a conduit is opened at the bottom of a charging tank into which liquid flows in,
A valve for controlling the closing or opening of this conduit is provided, a float switch at the bottom of the charging receiving tank is provided, and a timer for measuring the duration of a signal output from the float switch being floated is provided. There is proposed a liquid amount measuring device configured to calculate the liquid amount of the liquid to be measured by a calculating means based on the duration and the previously measured flow rate of the liquid to be measured passing through the conduit in a penetrated state. .

【0003】[0003]

【発明が解決しようとする課題】上記特開平8−304
140号公報の液量測定装置においては、フロートを使
用することが大きな障害となっている。例えば、確実な
作動を行わせるために浮力の大きなフロートを使用する
と、検出できる最小液量が大きくなり精密な測定を行う
ことができない問題がある。一方、浮力の小さいフロー
トを使用して測定精度を高めようとすると、尿等の液体
の溶解物の固形体すなわち溜まりの影響を受け易く、フ
ロートの動きを妨げる恐れが高くなる。さらに、浮力の
小さいフロートでは、流勢の大きい液体の流れによって
フロートが沈められて高精度に液量測定を行うことがで
きない問題がある。
The above-mentioned JP-A-8-304
In the liquid amount measuring device of Japanese Patent Publication No. 140, the use of a float is a major obstacle. For example, if a float having a large buoyancy is used to perform a reliable operation, the minimum liquid amount that can be detected becomes large, and there is a problem that precise measurement cannot be performed. On the other hand, when trying to increase the measurement accuracy by using a float having a small buoyancy, the float is easily affected by a solid, that is, a pool of a dissolved substance of a liquid such as urine, and there is a high possibility of hindering the movement of the float. Furthermore, in the case of a float having a small buoyancy, there is a problem that the float is sunk by the flow of the liquid having a large flow force, and the liquid amount cannot be measured with high accuracy.

【0004】[0004]

【発明の目的】本発明は、従来技術の上述したごとき問
題に鑑みてなされたものであって、検出できる最小液量
が小さく精密な測定が可能であり、また、尿等の液体の
溶解物の固形体の影響を受け難くい液量測定装置を提供
することを目的とする。また、本発明は、液体の流れの
影響を受けず常に高精度の測定を行うことができる液量
測定装置を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a small minimum detectable liquid amount, enables precise measurement, and is capable of dissolving a liquid such as urine. It is an object of the present invention to provide a liquid amount measuring device which is hardly affected by a solid body. Another object of the present invention is to provide a liquid amount measuring device capable of always performing highly accurate measurement without being affected by the flow of the liquid.

【0005】[0005]

【課題を解決するための手段】本発明は、底部に排出開
閉器を有する液受け槽と、該液受け槽に空気溜め部を介
して臨まして液受け槽の液面に関する圧力を検出する圧
力センサーと、上記排出開閉器の開き作動信号及び上記
圧力センサーの検出信号によって上記液受け槽の貯蔵量
を演算する演算部とを備えていることを特徴とする液量
測定装置である。本発明の実施態様は以下の通りであ
る。上記液受け槽が中央部に傘状整流器を配置している
ことを特徴とする。上記圧力センサーが空気溜め部に気
体排出管を配置していることを特徴とする。上記圧力セ
ンサーが空気溜め部に液吹き飛ばし用エアノズルを配置
していることを特徴とする。上記空気溜め部が、上記液
受け槽に近い側の直径を圧力検出部に近い側の直径より
大きくしていることを特徴とする。上記液量測定装置
が、さらに比重測定部を有し、上記演算部が上記比重測
定部からの検出信号によって貯蔵量演算を補正すること
を特徴とする。
According to the present invention, there is provided a liquid receiving tank having a discharge switch at the bottom thereof, and a pressure for detecting the pressure on the liquid level of the liquid receiving tank by approaching the liquid receiving tank through an air reservoir. A liquid amount measuring device comprising: a sensor; and a calculation unit that calculates a storage amount of the liquid receiving tank based on an opening operation signal of the discharge switch and a detection signal of the pressure sensor. The embodiments of the present invention are as follows. The liquid receiving tank is characterized in that an umbrella-shaped rectifier is arranged at the center. The pressure sensor is characterized in that a gas discharge pipe is arranged in the air reservoir. The pressure sensor is characterized in that a liquid blowing air nozzle is arranged in the air reservoir. The air reservoir may have a diameter closer to the liquid receiving tank than a diameter closer to the pressure detector. The liquid amount measuring device further includes a specific gravity measuring unit, and the arithmetic unit corrects the storage amount calculation based on a detection signal from the specific gravity measuring unit.

【0006】[0006]

【実施の形態】以下、本発明の一実施例の液量測定装置
を包含する尿検査装置を図に基づいて説明する。尿検査
装置1は、図1及び図2に示すように、尿が流入される
尿受け槽10の底部に尿の排出、貯留を切り替えるため
のピンチバルブ16を介し比重測定槽14に連結され
る。比重測定槽14は尿受け槽10より低い位置に取り
付けられる。尿受け槽10内の尿はピンチバルブ16を
開くことによって導管12を通って比重測定槽14内に
自然落下するように配置されている。さらに、尿受け槽
10の底部に一端を連通し、他端を連通位置より上方と
なるように配置した空気貯まり用パイプ11と、この空
気貯まりパイプ11内に滞留する空気を介して、前記尿
受け槽10に流入した尿による圧力を測定する圧力セン
サ18が設置され、圧力センサ18から尿受け槽10に
流入した尿の液面に関する信号が出力される。比重測定
槽14の底部には、細径部14aが下方に連通して設置
され、この連通部14a内に下端が挿入されて比重測定
用フロート20が上下動自在に設置される。しかも、比
重測定槽14の底部又は細径部14aの連通部付近の所
定高さ位置に導管22の一端が連通口され、その他端が
排水タンク24に連通開口されている。
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a urine test apparatus including a liquid amount measuring apparatus according to an embodiment of the present invention. As shown in FIGS. 1 and 2, the urine test apparatus 1 is connected to a specific gravity measurement tank 14 via a pinch valve 16 for switching urine discharge and storage at the bottom of a urine receiving tank 10 into which urine flows. . The specific gravity measuring tank 14 is attached at a position lower than the urine receiving tank 10. The urine in the urine receiving tank 10 is arranged so as to fall naturally into the specific gravity measuring tank 14 through the conduit 12 by opening the pinch valve 16. Further, the urine is passed through an air storage pipe 11 having one end communicating with the bottom of the urine receiving tank 10 and the other end disposed above the communication position, and air remaining in the air storage pipe 11. A pressure sensor 18 for measuring the pressure of urine flowing into the receiving tank 10 is provided, and a signal relating to the level of urine flowing into the urine receiving tank 10 is output from the pressure sensor 18. At the bottom of the specific gravity measurement tank 14, a small-diameter portion 14a is installed so as to communicate downward, and a lower end is inserted into the communication portion 14a, and a specific gravity measurement float 20 is installed to be vertically movable. In addition, one end of the conduit 22 has a communication opening at a predetermined height near the bottom of the specific gravity measuring tank 14 or the communication portion of the small diameter portion 14 a, and the other end is open to the drainage tank 24.

【0007】尿受け槽10の内部には傘状整流器19が
設けられる。傘状整流器19は、尿受け槽10に尿が投
入されたとき、気泡が空気貯まりパイプ11内に入り込
むことを避けるため、投入尿が尿受け槽10の壁面を沿
って流れ込み、空気貯まりパイプ11内の空気を尿でス
ムーズに置換するために設けられる。導管22にはこれ
を開閉制御するためのピンチバルブ26が設けられ、こ
のピンチバルブ26の開通制御により、比重測定槽14
内の尿は排出されて尿比重測定するための所定液面位置
の尿のみが細径部14aに残留する。この所定液面位置
における比重測定用フロートの高さ位置が、比重測定用
フロート上端部に沿って設けられたセンサ28によって
検出される。また、細径部14aには尿の温度を測定す
る温度センサ30が設置される。さらに、細径部14a
の底部に、導管32の一端が連通開口し、その他端が排
水タンク24に連通開口される。導管32に、これを開
閉制御できるピンチバルブ34が設置される。排水タン
ク24は、細径部14aより下方位置にあり、ピンチバ
ルブ26、34の開閉制御により、比重測定槽14内の
尿が排水タンク24に自然落下するように配置されてい
る。
An umbrella rectifier 19 is provided inside the urine receiving tank 10. The umbrella-shaped rectifier 19 is configured such that when urine is injected into the urine receiving tank 10, the injected urine flows along the wall surface of the urine receiving tank 10 to prevent air bubbles from entering the air storing pipe 11, and the air storing pipe 11 It is provided to smoothly replace the air inside with urine. The conduit 22 is provided with a pinch valve 26 for controlling the opening and closing of the conduit 22.
The urine inside is discharged and only the urine at a predetermined liquid level position for measuring the specific gravity of the urine remains in the small diameter portion 14a. The height position of the specific gravity measurement float at the predetermined liquid level position is detected by a sensor 28 provided along the upper end of the specific gravity measurement float. Further, a temperature sensor 30 for measuring the temperature of urine is installed in the small diameter portion 14a. Further, the small diameter portion 14a
One end of the conduit 32 communicates with the bottom of the container, and the other end communicates with the drainage tank 24. The conduit 32 is provided with a pinch valve 34 that can control opening and closing of the conduit 32. The drainage tank 24 is located below the small-diameter portion 14a, and is arranged such that urine in the specific gravity measurement tank 14 falls naturally into the drainage tank 24 by opening and closing control of the pinch valves 26 and 34.

【0008】さらに、細径部14aは導管36及びフィ
ルター43を介して吸入ポンプ38の吸入ポートに接続
される。導管36にはこれを開閉制御するピンチバルブ
40が取り付けられる。吸入ポンプ38の排出ポート
は、導管42を介してサンプル採取ノズル44に接続さ
れる。サンプル採取ノズル44は、複数個配列されたサ
ンプル容器(図示せず)上を分注器(図示せず)で移動
されて適宜サンプル採取をする。サンプル容器(図示せ
ず)の脇には受け容器46が設置され、その底部が導管
48を介して排水タンク24に接続される。排水タンク
24は、導管50を介して排液ポンプ52の吸い込みポ
ートに接続され、この排液ポート52の排液ポートより
排出される。排水タンク24には、液面の上限位置と下
限位置をそれぞれ検出するための2つの上限及び下限検
出フロートスイッチ54、56が設置されている。
Further, the small diameter portion 14a is connected to a suction port of a suction pump 38 via a conduit 36 and a filter 43. A pinch valve 40 for controlling the opening and closing of the conduit 36 is attached to the conduit 36. The discharge port of the suction pump 38 is connected via a conduit 42 to a sampling nozzle 44. The sample collecting nozzle 44 is moved by a dispenser (not shown) over a plurality of arranged sample containers (not shown) to appropriately collect a sample. A receiving container 46 is provided beside the sample container (not shown), and the bottom is connected to the drainage tank 24 via a conduit 48. The drainage tank 24 is connected to a suction port of a drainage pump 52 via a conduit 50, and is discharged from the drainage port of the drainage port 52. The drain tank 24 is provided with two upper and lower detection float switches 54 and 56 for detecting the upper and lower positions of the liquid surface, respectively.

【0009】装置内の洗浄は、水道水等の洗浄水が電磁
弁60と適宜な配管により、アスピレータ62を介して
行われる。噴射ノズル61は尿受け槽10の上方に設置
されて、噴射水が尿受け槽10の壁面を沿ってスパイラ
ル状に流れる。アスピレーター62は、ピンチバルブ6
4が介装される配管を介して接続された洗浄液槽66か
らの洗浄剤を洗浄水に適宜に混入させる。また、電磁弁
60を通過した洗浄水は、受け用器46に設置されたサ
ンプル採取ノズル44を洗浄する噴出ノズルに適宜な配
管により供給される。上述したピンチバルブ16、1
7、26、34、40、64、電磁弁60、エアーポン
プ23、吸い込みポンプ38、及び排液ポンプ52は、
図3に示すように、中央演算装置80からの制御信号に
より適宜に制御される。
Washing of the inside of the apparatus is performed by washing water, such as tap water, with an electromagnetic valve 60 and appropriate piping via an aspirator 62. The injection nozzle 61 is installed above the urine receiving tank 10, and the jet water flows in a spiral shape along the wall surface of the urine receiving tank 10. The aspirator 62 includes the pinch valve 6
The cleaning agent from the cleaning liquid tank 66 connected via a pipe in which the cleaning liquid 4 is interposed is appropriately mixed into the cleaning water. Further, the washing water that has passed through the electromagnetic valve 60 is supplied to an ejection nozzle for washing the sample collection nozzle 44 installed in the receiver 46 through an appropriate pipe. The above-described pinch valves 16, 1
7, 26, 34, 40, 64, the solenoid valve 60, the air pump 23, the suction pump 38, and the drain pump 52
As shown in FIG. 3, it is appropriately controlled by a control signal from the central processing unit 80.

【0010】圧力センサ18、センサ28、温度センサ
30、上限及び下限検出フロートスイッチ54、56、
起動スイッチ(図示せず)からの信号が、中央演算装置
80に与えられる。ここで起動スイッチ(図示せず)は
必ずしも独立して設けることを要せず、例えば、尿受け
槽10の蓋(図示せず)の開閉等に連動するように設け
られ、患者が***した尿を検査すべく尿検査装置に流入
させるために、尿受け槽10の蓋(図示せず)を開閉す
ることによって装置が起動されるように構成してもよ
い。尿受け槽10及び圧力センサ18をさらに詳細に説
明すると、図1に示すように、尿受け槽10の底部から
空気貯まり用パイプ11を介して圧力センサ18が設置
され、尿受け槽10は少ない尿量でも大きな水頭圧が得
られるように細径に構成されている。導管12は細い内
径のゴム管等からなり、ピンチバルブ16の突出ピン1
6aの押圧で閉塞状態となり、引っ込みにより開通状態
となる。
The pressure sensor 18, the sensor 28, the temperature sensor 30, the upper and lower limit float switches 54, 56,
A signal from an activation switch (not shown) is provided to the central processing unit 80. Here, the start switch (not shown) does not always need to be provided independently. For example, the start switch (not shown) is provided so as to be interlocked with opening and closing of a lid (not shown) of the urine receiving tank 10, and urine excreted by the patient The urine test apparatus may be configured to be activated by opening and closing a lid (not shown) of the urine receiving tank 10 in order to allow the urine to flow into the urine test apparatus for testing. The urine receiving tank 10 and the pressure sensor 18 will be described in more detail. As shown in FIG. 1, the pressure sensor 18 is installed from the bottom of the urine receiving tank 10 via the air storing pipe 11, and the urine receiving tank 10 is small. It has a small diameter so that a large head pressure can be obtained even in urine volume. The conduit 12 is formed of a rubber tube or the like having a small inner diameter.
6a is closed, and retracted to open.

【0011】ピンチバルブ16により導管12を閉塞状
態にし、圧力センサ18が圧力を検出するために必要な
液量V1をあらかじめ測定する。次に、導管12を開通
状態にし、尿受け槽10内の尿が無くなり圧力センサ1
8からの信号が消滅したとき、尿受け槽10の底部及び
導管12内に残留する液量V2をあらかじめ測定する。
この液量V2は、予め液量Vsが既知の液体を尿受け槽
10に流入し、演算値の液量Vに液量V1を加算した加
算値と、既知の液量Vsとの差から測定する。実際の測
定においては、ピンチバルブ16を閉塞制御し、導管1
2を閉塞させることによって、尿受け槽10に尿を貯め
る。貯まった尿は、ピンチバルブ16を開制御すること
によって導管12から比重測定槽14へ流出する。これ
らの間、尿受け槽10に貯まっている尿の液面高さに応
じた圧力が、圧力センサ18によって検出される。ピン
チバルブ16を開制御してから圧力センサ18で検出さ
れる圧力が無くなるまでの時間(信号継続時間)Tを求
め、流量QとTを掛け合わせ、前記V1及びV2を加算
することにより液量Vを演算によって求める。
The conduit 12 is closed by the pinch valve 16, and the pressure sensor 18 measures a liquid amount V1 required for detecting pressure in advance. Next, the conduit 12 is opened, and the urine in the urine receiving tank 10 runs out, and the pressure sensor 1
When the signal from 8 disappears, the liquid amount V2 remaining in the bottom of the urine receiving tank 10 and the conduit 12 is measured in advance.
The liquid volume V2 is measured from the difference between the known value of the liquid volume Vs and the sum of the calculated value of the liquid volume V plus the liquid volume V1 and the known value of the liquid volume Vs. I do. In the actual measurement, the pinch valve 16 is closed and the conduit 1 is controlled.
The urine is stored in the urine receiving tank 10 by closing the container 2. The accumulated urine flows out of the conduit 12 to the specific gravity measuring tank 14 by controlling the opening of the pinch valve 16. During these times, a pressure corresponding to the liquid level of the urine stored in the urine receiving tank 10 is detected by the pressure sensor 18. A time (signal continuation time) T from when the pinch valve 16 is opened to when the pressure detected by the pressure sensor 18 disappears is obtained, the flow rate Q is multiplied by T, and the liquid volume is obtained by adding V1 and V2. V is obtained by calculation.

【0012】流量Qは、尿受け槽10の形状、特に高さ
方向における断面形状によって変化するので、上記液量
演算において信号継続時間Tに対応した補正値を加味す
ることにより、正確な流量を演出する。また、尿の比重
値によって同量の液量でも圧力センサ18で検出される
圧力が異なるので、比重測定槽14で測定される尿の比
重値に対する補正値を液量に加味することによって、比
重値の違いによる流量の誤差を補正する。次に、図2に
示す尿検査装置の作動について説明する。これらの作動
の制御は、図3に示す中央演算装置80のソフトウエア
によって制御される。図4及び図5に示すように、起動
スイッチ(図示せず)からの起動信号によって中央演算
装置80は装置を初期状態、すなわち、ピンチバルブ1
6、17、64を閉塞状態にれる(ステップ1)。尿受
け槽10の蓋を開く(ステップ2)。患者が尿を尿受け
槽10に入れる(ステップ3)。尿受け槽10の蓋を閉
める(ステップ3)。ピンチバルブ26、34、40を
閉塞する(ステップ5)。圧力センサ18から信号が出
力されると(ステップ6)、ピンチバルブ16が開制御
される(ステップ7)と同時に計時動作が中央演算装置
80内で開始される(ステップ8)。圧力センサ18か
らの信号が消滅した時点で、計時動作を終了する(ステ
ップ9)。ピンチバルブ16を閉塞制御する(ステップ
10)。
Since the flow rate Q changes depending on the shape of the urine receiving tank 10, particularly the cross-sectional shape in the height direction, an accurate flow rate can be obtained by taking into account the correction value corresponding to the signal duration T in the above-mentioned liquid volume calculation. To direct. In addition, since the pressure detected by the pressure sensor 18 differs even with the same amount of liquid depending on the specific gravity of urine, a correction value for the specific gravity of urine measured in the specific gravity measurement tank 14 is added to the liquid volume to obtain a specific gravity. Corrects flow rate errors due to differences in values. Next, the operation of the urine test apparatus shown in FIG. 2 will be described. The control of these operations is controlled by software of the central processing unit 80 shown in FIG. As shown in FIG. 4 and FIG. 5, the central processing unit 80 initializes the apparatus by an activation signal from an activation switch (not shown), that is, the pinch valve 1.
6, 17, and 64 are closed (step 1). The lid of the urine receiving tank 10 is opened (step 2). The patient puts urine into the urine receiving tank 10 (step 3). The lid of the urine receiving tank 10 is closed (step 3). The pinch valves 26, 34 and 40 are closed (step 5). When a signal is output from the pressure sensor 18 (step 6), the opening of the pinch valve 16 is controlled (step 7), and at the same time, a timing operation is started in the central processing unit 80 (step 8). When the signal from the pressure sensor 18 disappears, the timing operation ends (step 9). The closing control of the pinch valve 16 is performed (step 10).

【0013】中央演算装置80は、継続時間Tと流量Q
とから演算された尿量に液量V1とV2を加算、さらに
尿受け槽10の形状による補正値を加味して尿量を演算
する(ステップ11)。演算された尿量が所定量に達す
ると(ステップ12)、ピンチバルブ40と吸い込みポ
ンプ38及び分注器70が適宜に制御されてサンプル採
取が行われる(ステップ13)。ここで、ステップ13
における所定量とは、比重測定槽14の底部の細径部1
4aを充満して、比重測定用フロート20で比重を測定
するのに必要な量とサンプル採取で分注する量の合計以
上である。ステップ12で演算された液量が所定値より
も少なかった場合、比重値の測定ができないため、計測
を終了し、エラー表示を行う。サンプル動作が終了する
と、ピンチバルブ26が開制御される(ステップ1
4)。ピンチバルブ26が開制御されることで、比重を
測定する以外に必要な尿は導管22を介して排水タンク
24に排出される。従って、比重測定槽14は、測定さ
れる液量よりも容積の小さいものでも足りる。
The central processing unit 80 has a duration T and a flow rate Q
Then, the liquid volumes V1 and V2 are added to the urine volume calculated from the above, and the urine volume is calculated in consideration of a correction value depending on the shape of the urine receiving tank 10 (step 11). When the calculated urine amount reaches a predetermined amount (step 12), the pinch valve 40, the suction pump 38, and the dispenser 70 are appropriately controlled to perform sampling (step 13). Here, step 13
Is the small diameter portion 1 at the bottom of the specific gravity measurement tank 14.
4a is equal to or more than the sum of the amount required to measure the specific gravity with the specific gravity measurement float 20 and the amount dispensed by sampling. If the liquid volume calculated in step 12 is smaller than the predetermined value, the specific gravity value cannot be measured, so that the measurement is terminated and an error is displayed. When the sample operation is completed, the pinch valve 26 is controlled to open (step 1).
4). By controlling the opening of the pinch valve 26, urine other than measuring the specific gravity is discharged to the drainage tank 24 via the conduit 22. Therefore, the specific gravity measurement tank 14 may have a smaller volume than the measured liquid volume.

【0014】ピンチバルブ26が開制御されることによ
り、比重測定槽14の液面高さが一定となり、比重測定
フロート20の高さが安定したら(ステップ15)、比
重測定フロート20の高さと温度センサ30の出力を中
央演算装置80が読みとる(ステップ16)。比重測定
槽14の液面高さが一定であるか否かは、比重測定フロ
ート20の高さを検出するセンサ28の出力が変化して
いるか一定となったかによって判断する。これらの値よ
り尿の比重値が中央演算装置で演算される(ステップ1
7)。さらに、比重値による尿量の補正を行い正確尿量
を演算する。ピンチバルブ34を開制御して比重測定槽
14内の尿を排水タンク24に排出する(ステップ1
8)。その後電磁弁60が開かれて洗浄が開始され(ス
テップ19)、所定時間清浄後に電磁弁60が閉じられ
洗浄が終了する(ステップ20)。洗浄動作が終了する
と、ピンチバルブ17が開制御され、エアポンプ18が
動作して、空気溜まり用パイプ内に入り込んだ水滴等を
吹き飛ばす(ステップ21)。一定時間後エアポンプ1
8が停止し計測が終了する。
When the pinch valve 26 is controlled to open, the liquid level of the specific gravity measuring tank 14 becomes constant and the height of the specific gravity measuring float 20 becomes stable (step 15). The central processing unit 80 reads the output of the sensor 30 (step 16). Whether or not the liquid level of the specific gravity measurement tank 14 is constant is determined based on whether the output of the sensor 28 that detects the height of the specific gravity measurement float 20 has changed or has become constant. From these values, the specific gravity of urine is calculated by the central processing unit (step 1).
7). Further, the urine volume is corrected based on the specific gravity value to calculate an accurate urine volume. The pinch valve 34 is controlled to open to discharge urine in the specific gravity measuring tank 14 to the drainage tank 24 (step 1).
8). Thereafter, the electromagnetic valve 60 is opened to start cleaning (step 19). After cleaning for a predetermined time, the electromagnetic valve 60 is closed and the cleaning is completed (step 20). When the cleaning operation is completed, the pinch valve 17 is controlled to open, and the air pump 18 is operated to blow off water droplets and the like that have entered the air reservoir pipe (step 21). Air pump 1 after a certain time
8 stops and the measurement ends.

【0015】排水ポンプ52の作動制御は、上記尿量及
び尿比重の測定動作とは関係なしになされる。すなわ
ち、排液タンク24の液面が上昇して上限フロートスイ
ッチ54から信号が出力されると、排液ポンプ52を駆
動させ、排液タンク24の液面が下降して下限検出フロ
ートスイッチ56から信号が出力されると、排液ポンプ
52の駆動が停止されるように、中央演算装置80で制
御される。また、上限検出フロートスイッチ54の検出
によることなしに、下限検出フロートスイッチ56から
信号が出力される状態から投入された尿の演算による総
量に応じて排液ポンプ52が中央演算装置80で制御さ
れても良い。ピンチバルブ64の制御は、予め予定され
た所定時刻に洗浄液が清浄水に混入されるように適宜に
制御される。
The operation of the drain pump 52 is controlled independently of the operation of measuring the urine volume and urine specific gravity. That is, when the liquid level of the drainage tank 24 rises and a signal is output from the upper limit float switch 54, the drainage pump 52 is driven, and the liquid level of the drainage tank 24 falls and the lower limit detection float switch 56 When the signal is output, the central processing unit 80 controls so that the driving of the drainage pump 52 is stopped. Further, the drainage pump 52 is controlled by the central processing unit 80 in accordance with the total amount of the urine input from the state in which the signal is output from the lower limit detection float switch 56 without being detected by the upper limit detection float switch 54. May be. The control of the pinch valve 64 is appropriately controlled such that the cleaning liquid is mixed into the clean water at a predetermined time scheduled in advance.

【0016】尚、上記実施例にあっては、本発明の液量
測定装置を尿量に適用した例を説明したが、被測定液は
尿に限れず、導管12をほぼ一定の流速で流れるいかな
る液量をも測定することができる。例えば、降雨量や、
家庭、工場からの排水量を測定するとき等、大型のタン
ク等を用いないでも液量を測定することができ、装置の
小型化に大きく貢献できる。
In the above embodiment, an example in which the liquid volume measuring apparatus of the present invention is applied to urine volume has been described. However, the liquid to be measured is not limited to urine, and flows through the conduit 12 at a substantially constant flow rate. Any liquid volume can be measured. For example, rainfall,
The liquid volume can be measured without using a large tank or the like, such as when measuring the amount of wastewater from homes and factories, which can greatly contribute to downsizing of the device.

【0017】[0017]

【発明の効果】本発明によれば、検出できる最小液量が
小さく精密な測定が可能であり、また、尿等の液体の溶
解物の固形体の影響を受け難い効果を有する。また、本
発明によれば、液体の流れの影響を受けず常に高精度の
測定を行うことができる効果を有する。
According to the present invention, the minimum amount of liquid that can be detected is small, accurate measurement is possible, and there is an effect that it is hard to be affected by the solid matter of the dissolved substance of the liquid such as urine. Further, according to the present invention, there is an effect that a highly accurate measurement can always be performed without being affected by the flow of the liquid.

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

【図1】本発明の一実施例の液量測定装置の構造説明図
である。
FIG. 1 is a structural explanatory view of a liquid amount measuring device according to an embodiment of the present invention.

【図2】本発明の一実施例の液量測定装置を包含する尿
検査装置の構造説明図である。
FIG. 2 is a structural explanatory view of a urine test apparatus including a liquid amount measuring apparatus according to one embodiment of the present invention.

【図3】図2に示す尿検査装置の制御系のブロック図で
ある。
FIG. 3 is a block diagram of a control system of the urine test apparatus shown in FIG.

【図4】図2に示す尿検査装置の作動の前半のステップ
図である。
FIG. 4 is a first half step diagram of the operation of the urine test apparatus shown in FIG. 2;

【図5】図2に示す尿検査装置の作動の後半のステップ
図である。
FIG. 5 is a step diagram of the latter half of the operation of the urine test apparatus shown in FIG. 2;

【符号の説明】[Explanation of symbols]

1 尿検査装置 10 尿受け槽 11 空気貯まり用パイプ 14 比重測定槽 15 ピンチバルブ 16 ピンチバルブ 18 圧力センサ 19 傘状整流器 20 比重測定用フロート 24 排水タンク 26 ピンチバルブ 30 温度センサ 38 吸入ポンプ 44 サンプル採取ノズル 52 排液ポンプ 60 電磁弁 62 アスピレータ 66 洗浄液槽 80 中央演算装置 Reference Signs List 1 urine testing device 10 urine receiving tank 11 air storage pipe 14 specific gravity measuring tank 15 pinch valve 16 pinch valve 18 pressure sensor 19 umbrella rectifier 20 specific gravity measuring float 24 drainage tank 26 pinch valve 30 temperature sensor 38 suction pump 44 sample collection Nozzle 52 Drain pump 60 Solenoid valve 62 Aspirator 66 Cleaning tank 80 Central processing unit

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】 底部に排出開閉器を有する液受け槽と、 該液受け槽に空気溜め部を介して臨まして液受け槽の液
面に関する圧力を検出する圧力センサーと、 上記排出開閉器の開き作動信号及び上記圧力センサーの
検出信号によって上記液受け槽の貯蔵量を演算する演算
部とを備えていることを特徴とする液量測定装置。
1. A liquid receiving tank having a discharge switch at a bottom portion, a pressure sensor which faces the liquid receiving tank via an air reservoir and detects a pressure related to a liquid level of the liquid receiving tank, and A calculation unit for calculating a storage amount of the liquid receiving tank based on an opening operation signal and a detection signal of the pressure sensor.
【請求項2】 上記液受け槽が中央部に傘状整流器を配
置していることを特徴とする請求項1に記載の液量測定
装置。
2. The liquid amount measuring device according to claim 1, wherein the liquid receiving tank has an umbrella-shaped rectifier disposed at a central portion.
【請求項3】 上記圧力センサーが空気溜め部に気体排
出管を配置していることを特徴とする液量測定装置。
3. The liquid amount measuring device according to claim 1, wherein the pressure sensor has a gas discharge pipe disposed in the air reservoir.
【請求項4】 上記圧力センサーが空気溜め部に液吹き
飛ばし用エアノズルを配置していることを特徴とする液
量測定装置。
4. A liquid amount measuring device according to claim 1, wherein said pressure sensor has a liquid blowing air nozzle disposed in an air reservoir.
【請求項5】 上記空気溜め部が、上記液受け槽に近い
側の直径を圧力検出部に近い側の直径より大きくしてい
ることを特徴とする液量測定装置。
5. The liquid amount measuring device according to claim 1, wherein a diameter of the air reservoir near the liquid receiving tank is larger than a diameter near the pressure detector.
【請求項6】 上記液量測定装置が、さらに比重測定部
を有し、上記演算部が上記比重測定部からの検出信号に
よって貯蔵量演算を補正することを特徴とする液量測定
装置。
6. The liquid amount measuring device according to claim 1, wherein the liquid amount measuring device further includes a specific gravity measuring unit, and the arithmetic unit corrects the storage amount calculation based on a detection signal from the specific gravity measuring unit.
JP26622397A 1997-09-30 1997-09-30 Liquid level measuring equipment Pending JPH11108732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26622397A JPH11108732A (en) 1997-09-30 1997-09-30 Liquid level measuring equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26622397A JPH11108732A (en) 1997-09-30 1997-09-30 Liquid level measuring equipment

Publications (1)

Publication Number Publication Date
JPH11108732A true JPH11108732A (en) 1999-04-23

Family

ID=17427984

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26622397A Pending JPH11108732A (en) 1997-09-30 1997-09-30 Liquid level measuring equipment

Country Status (1)

Country Link
JP (1) JPH11108732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088966A1 (en) * 2009-02-09 2010-08-12 Pulsion Medical Systems Ag Device and method for continuously measuring the flow velocity and total volume of a fluid, in particular of urine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010088966A1 (en) * 2009-02-09 2010-08-12 Pulsion Medical Systems Ag Device and method for continuously measuring the flow velocity and total volume of a fluid, in particular of urine

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