JPH04259822A - Device for detecting remaining amount of liquid in container - Google Patents
Device for detecting remaining amount of liquid in containerInfo
- Publication number
- JPH04259822A JPH04259822A JP3021229A JP2122991A JPH04259822A JP H04259822 A JPH04259822 A JP H04259822A JP 3021229 A JP3021229 A JP 3021229A JP 2122991 A JP2122991 A JP 2122991A JP H04259822 A JPH04259822 A JP H04259822A
- Authority
- JP
- Japan
- Prior art keywords
- container
- liquid
- pump
- amount
- pressure
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 claims description 17
- 230000032258 transport Effects 0.000 claims description 2
- 239000011550 stock solution Substances 0.000 description 33
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 9
- 229920002554 vinyl polymer Polymers 0.000 description 9
- 239000002184 metal Substances 0.000 description 7
- 238000011084 recovery Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 235000013361 beverage Nutrition 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 235000008504 concentrate Nutrition 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】この発明は、主として飲料用自動
販売機における飲料原液の容器内残量の程度を、液体粘
度や１回分の供給量ないし吐出量、そのときの容器内残
量などに影響されないで正確に検知し、この検知に基づ
いて適切な処置を講じ得るようにした容器内の液体残量
検知装置に関する。[Industrial Application Field] This invention mainly detects the remaining amount of beverage concentrate in a container in a beverage vending machine based on the liquid viscosity, the amount of supply or discharge per serving, the amount remaining in the container at that time, etc. The present invention relates to a device for detecting the amount of liquid remaining in a container, which can accurately detect the amount without being influenced and can take appropriate measures based on this detection.
【０００２】0002
【従来の技術】従来、原液を吐出させるのに、二つの方
式がある。一つは、金属製容器に収容された原液が、炭
酸ガスボンベからのガス圧によって押し出される方式で
ある。もう一つは、可撓性をもつビニール密封容器に封
入された原液が、吸引ポンプによって吸引，吐出される
方式で、この場合ビニール密封容器は使い捨てされる。2. Description of the Related Art Conventionally, there are two methods for discharging a stock solution. One is a method in which the stock solution contained in a metal container is pushed out by gas pressure from a carbon dioxide gas cylinder. The other method is to use a suction pump to suck up and discharge the stock solution sealed in a flexible sealed vinyl container, and in this case, the sealed vinyl container is disposable.
【０００３】第１の金属製容器の場合には、原液が押し
出される配管の途中に、少なくとも１回の販売量を保有
できる予備容器を設けておく。金属製容器内の原液が消
費されると、次に予備容器に保有されている原液が使わ
れることになる。このとき、金属製容器が空になったこ
とを検知することが必要になるが、このことは、金属製
容器に原液レベル検知器を設けることが困難なため、予
備容器における原液と押し出し用の炭酸ガスとの境界面
を、たとえば静電容量形液面センサによって検知させる
方式が多くとられる。さて金属製容器の場合、原液を再
び収容させて使用するとき、金属容器を洗浄しなければ
ならないので、その手間が大変で保守上の問題点となる
。[0003] In the case of the first metal container, a reserve container capable of holding at least one sales volume is provided in the middle of the piping through which the stock solution is pushed out. When the stock solution in the metal container is consumed, the stock solution held in the reserve container will be used next. At this time, it is necessary to detect when the metal container is empty, but it is difficult to install a liquid level detector in the metal container, so In many cases, the interface with carbon dioxide gas is detected using, for example, a capacitive liquid level sensor. In the case of a metal container, when the undiluted solution is stored again and used, the metal container must be cleaned, which is time consuming and poses a maintenance problem.
【０００４】そのため、使い捨て可能な第２の可撓性ビ
ニール密封容器の方が多く用いられる傾向にある。しか
し反面、次に述べるような、容器内の原液が消費された
ときの対応処置を適切に講じるのが困難であるという問
題がある。ビニール密封容器から原液を吸引，吐出させ
配管の途中に予備容器を設けておいても、ビニール密封
容器が空になると、予備容器に保有されている原液の吸
引，吐出ができなくなる。そのため、ビニール密封容器
が空になる前段に、そのことをあらかじめ検知して信号
を出して、販売を停止させたり、原液の補給処置をとら
せたりする必要がある。しかし、ビニール密封容器内の
原液の残量を正確に検出するのは技術的に難しく、その
検出に基づく信号出力のタイミングを誤ると、販売中の
飲料の量が不足して客側に迷惑をかけたり、販売機側で
もビニール密封容器が空になっても各種機能が停止され
ず故障の原因になったりする。[0004] Therefore, there is a tendency for disposable second flexible vinyl sealed containers to be used more frequently. However, on the other hand, there is a problem in that it is difficult to take appropriate measures when the stock solution in the container is consumed, as described below. Even if a spare container is provided in the middle of the piping for sucking and discharging the stock solution from a sealed vinyl container, when the sealed vinyl container becomes empty, the stock solution held in the spare container cannot be sucked or discharged. Therefore, it is necessary to detect this in advance and issue a signal before the sealed vinyl container becomes empty to stop sales or take measures to replenish the undiluted solution. However, it is technically difficult to accurately detect the remaining amount of concentrate in a sealed vinyl container, and if the timing of the signal output based on this detection is incorrect, the amount of beverage being sold may be insufficient, causing inconvenience to customers. Otherwise, even if the sealed vinyl container is empty, various functions of the vending machine will not stop, causing a malfunction.
【０００５】容器が可撓性をもつビニールのときの従来
例について、その構成図である図６を参照しながら説明
する。図６において、１は可撓性の容器、２はこれを格
納するケース、３は原液を吸引・輸送するポンプで、容
器１とポンプ３とは配管７によって接続され、原液はポ
ンプ３の右側に接続される配管７の端部から吐出，供給
される。５は圧力センサで、容器１とポンプ３とをつな
ぐ配管７に設置されて、その箇所での原液の圧力を測定
する。９は制御・検知部で、詳しく後述するように、ポ
ンプ３の起動，停止や、圧力センサ５の出力の取り込み
、さらにこの出力に基づく容器１内の原液残量程度の検
知などの機能をもつ。[0005] A conventional example in which the container is made of flexible vinyl will be described with reference to FIG. 6, which is a configuration diagram thereof. In FIG. 6, 1 is a flexible container, 2 is a case for storing this, and 3 is a pump for sucking and transporting the stock solution.The container 1 and the pump 3 are connected by a pipe 7, and the stock solution is placed on the right side of the pump 3. It is discharged and supplied from the end of the pipe 7 connected to. A pressure sensor 5 is installed in a pipe 7 connecting the container 1 and the pump 3, and measures the pressure of the stock solution at that point. Reference numeral 9 denotes a control/detection unit, which has functions such as starting and stopping the pump 3, receiving the output of the pressure sensor 5, and detecting the amount of stock solution remaining in the container 1 based on this output, as will be described in detail later. .
【０００６】従来例では、制御・検知部９によって、ポ
ンプ３を吐出行程終了位置から起動させてから後、所定
時間Ｔ１だけ原液を吸引し続け、その吸引終了時点から
別の所定時間Ｔ２後の圧力を測定し、この圧力値に基づ
いて残量の程度を検知しようとする。このことを、図７
，図８を参照しながら説明する。図７は低粘度原液のと
きの圧力のタイムチャート、図８は高粘度原液のときの
圧力のタイムチャートである。In the conventional example, after the pump 3 is started from the discharge stroke end position by the control/detection unit 9, the stock solution is continued to be sucked for a predetermined time T1, and after another predetermined time T2 after the end of the suction. The pressure is measured and the remaining amount is detected based on this pressure value. This can be seen in Figure 7.
, will be explained with reference to FIG. FIG. 7 is a pressure time chart for a low viscosity stock solution, and FIG. 8 is a pressure time chart for a high viscosity stock solution.
【０００７】図７において、横軸に時間Ｔ、縦軸に圧力
Ｐがそれぞれとられ、Ｐｏは大気圧で、それ以下は負圧
である。一般に圧力Ｐは、吸引動作によって負圧の程度
が増し、吸引動作終了後に回復する。この負圧の程度と
回復のパターンは残量によって異なり、残量が多いとき
には実線のように、時間Ｔ１だけ吸引した後の負圧がわ
ずかで、回復も早い。残量がやや少なく、たとえば５回
分の供給量のときには破線のように、負圧の程度がさら
に増し、回復もやや緩慢である。以下、残量がさらに少
量になるほど、負圧の程度がさらに増し、回復もさらに
緩慢になって低水準に止まるようになる。一点鎖線は、
残量が極めて少量、たとえば２回分の供給量のときを、
二点鎖線は、残量がほぼ零に近いときをそれぞれ示す。
したがって、時間Ｔ２後の圧力に基づいて残量の程度を
検知することができる。In FIG. 7, time T is plotted on the horizontal axis and pressure P is plotted on the vertical axis, where Po is atmospheric pressure and pressure below it is negative pressure. Generally, the degree of negative pressure increases as a result of the suction operation, and the pressure P recovers after the suction operation ends. The degree of negative pressure and the pattern of recovery vary depending on the remaining amount; when the remaining amount is large, as shown by the solid line, the negative pressure after suction for time T1 is small and the recovery is quick. When the remaining amount is a little small, for example, the amount supplied for five times, the degree of negative pressure increases further as shown by the broken line, and the recovery is also somewhat slow. Thereafter, as the remaining amount becomes smaller, the degree of negative pressure increases further, and the recovery becomes slower and remains at a low level. The dashed line is
When the remaining amount is extremely small, for example, the amount for two doses,
The two-dot chain lines each indicate when the remaining amount is close to zero. Therefore, the level of remaining amount can be detected based on the pressure after time T2.
【０００８】図８において、原液が高粘度のときの圧力
パターンが示される。実線，破線，一点鎖線，二点鎖線
は残量の区別を示し、図７におけるのと同じ意味をもつ
。しかし、高粘度原液での圧力パターンは、低粘度原液
のときと異なり、時間Ｔ３だけ吸引した後の負圧が、残
量の程度にかかわらず同じ水準を示し、回復時間に差が
あるものの一応ほぼ大気圧まで回復する。この場合にも
、時間Ｔ４後の圧力に基づいて残量の程度を検知するこ
とができる。FIG. 8 shows the pressure pattern when the stock solution has a high viscosity. A solid line, a broken line, a one-dot chain line, and a two-dot chain line indicate the remaining amount, and have the same meaning as in FIG. 7. However, the pressure pattern with high viscosity stock solution is different from that with low viscosity stock solution, and the negative pressure after suctioning for time T3 shows the same level regardless of the level of remaining amount, and although there is a difference in recovery time, The pressure will return to almost atmospheric pressure. In this case as well, the level of remaining amount can be detected based on the pressure after time T4.
【０００９】[0009]
【発明が解決しようとする課題】従来例では、低粘度原
液における時間Ｔ１と、高粘度原液における時間Ｔ３と
は、ポンプ３を起動して吸引動作中であるように決めら
れるが、液体の粘度や、１回分の供給量ないし吐出量、
そのときの容器内残量などによって、共通な各時間Ｔ１
，Ｔ３のもとでは吸引終了時の吸引の程度が変化する。
したがって、その後の各時間Ｔ２，Ｔ４の選び方によっ
ては、最終的圧力に基づく残量程度の検知が困難になる
。この問題は、低粘度原液ではほとんど無いが、高粘度
原液では顕著に現れる。たとえば、図７においては、時
間Ｔ２の選び方のいかんにかかわらず、この時間Ｔ２の
後の圧力に基づいて残量の程度が検知できる。しかし、
図８においては、時間Ｔ４の選び方によって、たとえば
時間Ｔ２より短い時間Ｔｘであれば、一点鎖線と、二点
鎖線とにおける各圧力の差が小さく、残量が極めて少量
か、ほぼ零に近いかの区別がつかない。また、時間Ｔ２
より長い時間Ｔｙであれば、実線と、破線とにおける各
圧力の違いがなく、十分な残量か、やや少量かの区別が
つかない。言いかえれば、従来例では高粘度原液での時
間Ｔ４の設定が困難である。[Problems to be Solved by the Invention] In the conventional example, the time T1 for a low-viscosity stock solution and the time T3 for a high-viscosity stock solution are determined so that the pump 3 is activated and is in suction operation. , supply amount or discharge amount for one time,
Each common time T1 depends on the amount remaining in the container at that time.
, T3, the degree of suction at the end of suction changes. Therefore, depending on how the subsequent times T2 and T4 are selected, it becomes difficult to detect the remaining amount based on the final pressure. This problem hardly occurs with low-viscosity stock solutions, but becomes noticeable with high-viscosity stock solutions. For example, in FIG. 7, regardless of how the time T2 is selected, the level of remaining amount can be detected based on the pressure after the time T2. but,
In FIG. 8, depending on how the time T4 is selected, for example, if the time Tx is shorter than the time T2, the difference between the respective pressures between the one-dot chain line and the two-dot chain line is small, and the remaining amount is either extremely small or close to zero. I can't tell the difference. Also, time T2
If the time Ty is longer, there is no difference in pressure between the solid line and the broken line, and it is difficult to distinguish between a sufficient amount remaining and a slightly smaller amount. In other words, in the conventional example, it is difficult to set the time T4 with a high viscosity stock solution.
【００１０】この発明の課題は、従来の技術がもつ以上
の問題点を解消し、液体の容器内残量の程度を、液体の
粘度や、１回分の供給量ないし吐出量、そのときの容器
内残量、などに影響されないで正確に検知し、この検知
に基づいて適切な処置を講じ得るようにした容器内の液
体残量検知装置を提供することにある。An object of the present invention is to solve the above-mentioned problems of the conventional technology, and to determine the amount of liquid remaining in the container based on the viscosity of the liquid, the amount of supply or discharge for one time, and the amount of liquid remaining in the container at that time. It is an object of the present invention to provide a device for detecting the amount of liquid remaining in a container, which can accurately detect the amount remaining in the container without being affected by the amount remaining in the container, and can take appropriate measures based on this detection.
【００１１】[0011]
【課題を解決するための手段】この課題を解決するため
に、請求項１に係る容器内の液体残量検知装置は、液体
が密封される可撓性容器と配管を介して接続され、前記
液体を吸引，輸送するポンプと；前記配管における圧力
を測定する圧力センサと；前記ポンプの吸引に係る動作
の終了を位置的に検知する位置センサと；吐出行程終了
位置から吸引を開始させ後この位置センサの出力に基づ
いて吸引行程終了時点で前記ポンプを停止させるととも
に、前記吸引行程終了時点から所定時間後の前記圧力セ
ンサの出力に基づいて前記容器内の液体残量の程度を求
める制御・検知部と；を備える。請求項２に係る容器内
の液体残量検知装置は、請求項１に記載の装置において
、制御・検知部が、吸引行程終了時点から所定時間後の
圧力センサの出力と、これに対応する一または二以上の
設定値との比較に基づいて容器内の液体残量の程度を求
める。請求項３に係る容器内の液体残量検知装置は、請
求項１または２に記載の装置において、ポンプが、往復
ピストン形である。[Means for Solving the Problem] In order to solve this problem, a liquid remaining amount detection device in a container according to claim 1 is connected via piping to a flexible container in which liquid is sealed, and a pump that suctions and transports liquid; a pressure sensor that measures the pressure in the piping; a position sensor that positionally detects the end of suction-related operation of the pump; Control for stopping the pump at the end of the suction stroke based on the output of the position sensor, and determining the amount of liquid remaining in the container based on the output of the pressure sensor a predetermined time after the end of the suction stroke. It includes a detection section; The device for detecting the remaining amount of liquid in a container according to claim 2 is the device according to claim 1, in which the control/detection section detects the output of the pressure sensor after a predetermined time from the end of the suction stroke and the corresponding one. Alternatively, the amount of liquid remaining in the container is determined based on comparison with two or more set values. A third aspect of the present invention provides a device for detecting the amount of liquid remaining in a container according to the first or second aspect, in which the pump is of a reciprocating piston type.
【００１２】0012
【作用】請求項１に係る容器内の液体残量検知装置では
、制御・検知部によって、ポンプたとえば請求項３のよ
うに往復ピストン形ポンプの吸引行程終了を位置的に検
知する位置センサの出力に基づき、吸引行程終了時点で
ポンプが停止されるとともに、吸引行程終了時点から所
定時間後の圧力センサの出力に基づいて、たとえば請求
項２のように圧力センサの出力と、これに対応する一ま
たは二以上の設定値との比較に基づいて容器内の液体残
量の程度が求められる。[Operation] In the device for detecting the amount of liquid remaining in a container according to claim 1, the control/detection unit outputs the output of a position sensor that positionally detects the end of the suction stroke of a pump, for example, a reciprocating piston pump as in claim 3. Based on this, the pump is stopped at the end of the suction stroke, and based on the output of the pressure sensor a predetermined time after the end of the suction stroke, the output of the pressure sensor and the corresponding one are determined. Alternatively, the amount of liquid remaining in the container is determined based on comparison with two or more set values.
【００１３】[0013]
【実施例】本発明に係る容器内の液体残量検知装置の実
施例について、以下に図を参照しながら説明する。図１
は実施例の構成図で、この実施例が図６で述べた従来例
と構成面で異なる点は、マイクロスイッチ４がポンプ３
に対応して新たに設置されること、また従来例の制御・
検知部９に代えて制御・検知部６が用いられることであ
る。また動作面での違いは、ポンプ３がその吐出行程終
了位置から吸引を開始した後、位置センサとしてのマイ
クロスイッチ４の出力に基づいて吸引行程終了時点で停
止されるとともに、吸引行程終了時点から所定時間後の
圧力センサの出力が、容器内の原液残量を示すべき圧力
として求められる点である。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the apparatus for detecting the amount of liquid remaining in a container according to the present invention will be described below with reference to the drawings. Figure 1
is a configuration diagram of an embodiment, and the difference in configuration between this embodiment and the conventional example described in FIG. 6 is that the micro switch 4 is connected to the pump 3
Newly installed in response to
The control/detection section 6 is used instead of the detection section 9. The difference in operation is that after the pump 3 starts suction from the end position of its discharge stroke, it is stopped at the end of the suction stroke based on the output of the microswitch 4 as a position sensor, and from the end of the suction stroke. The point is that the output of the pressure sensor after a predetermined period of time is determined as the pressure that should indicate the amount of stock solution remaining in the container.
【００１４】図２は実施例におけるポンプに関し、（ａ
） は吸引行程終了時点の断面図、（ｂ） は吐出行程
中の断面図である。図２において、ポンプ３は往復ピス
トン形で、ケーシング３１内で往復直進するピストン３
２の動作によって、原液を容器１およびこれに接続され
る下方の配管７（図１参照）から吸込弁３４を通して吸
い込むとともに、吐出弁３５から上方の配管７を経て、
図示してない供給先に吐出させる。ピストンロッド３３
の左端面に対応してマイクロスイッチ４が定置されてい
て、このマイクロスイッチ４は、図２（ａ） の吸引行
程終了時にオンされ、その前後ではオフされる。つまり
マイクロスイッチ４は、ポンプ３の吸引行程の終了を位
置的に検知する。FIG. 2 shows the pump in the embodiment (a
) is a cross-sectional view at the end of the suction stroke, and (b) is a cross-sectional view during the discharge stroke. In FIG. 2, the pump 3 is of a reciprocating piston type, and the piston 3 moves straight back and forth within a casing 31.
2, the stock solution is sucked in from the container 1 and the lower piping 7 (see FIG. 1) connected to it through the suction valve 34, and from the discharge valve 35 through the upper piping 7.
It is discharged to a supply destination (not shown). piston rod 33
A microswitch 4 is fixedly placed corresponding to the left end face of the pump, and this microswitch 4 is turned on at the end of the suction stroke shown in FIG. 2(a), and turned off before and after that. In other words, the microswitch 4 positionally detects the end of the suction stroke of the pump 3.
【００１５】図１に戻って、制御・検知部６は、ポンプ
３の吐出行程終了位置から吸引を開始させ後に、マイク
ロスイッチ４からの、ポンプ３の吸引行程終了の信号に
よってポンプ３を停止させるとともに、その時点から所
定時間後の圧力センサ５の出力を測定し、この出力値に
基づいて残量の程度を検知する。この動作については、
以下に図５のフローチャートを主に、図３の低粘度原液
のときの圧力のタイムチャートと、図４の高粘度原液の
ときの圧力のタイムチャートとを補助的に参照しながら
説明する。なお、図３，図４の各タイムチャートは、従
来例における図７，図８の各タイムチャートにそれぞれ
対応する。Returning to FIG. 1, the control/detection unit 6 starts suction from the discharge stroke end position of the pump 3, and then stops the pump 3 in response to a signal from the microswitch 4 indicating the end of the suction stroke of the pump 3. At the same time, the output of the pressure sensor 5 is measured after a predetermined period of time from that point, and the level of the remaining amount is detected based on this output value. For this behavior,
The flowchart of FIG. 5 will be described below, with supplementary reference to the pressure time chart for a low-viscosity stock solution in FIG. 3 and the pressure time chart for a high-viscosity stock solution in FIG. 4. Note that the time charts in FIGS. 3 and 4 correspond to the time charts in FIGS. 7 and 8 in the conventional example, respectively.
【００１６】図５において、ステップＳ１でポンプを起
動させる。なお、初期のポンプのピストン位置は、吐出
行程終了に対応するものとする。すなわち、図２（ｂ）
においてピストン３２がもっとも右側に位置する。ス
テップＳ２で、マイクロスイッチからの信号Ｍがあると
、ステップＳ３でポンプを停止させ、次いでステップＳ
４でタイマＴを零スタート、つまりリセット状態からス
タートさせる。次にステップＳ５で、発明における所定
時間である時間Ｔｓが経過した後に、ステップＳ６で圧
力Ｐを測定する。In FIG. 5, the pump is started in step S1. Note that the initial pump piston position corresponds to the end of the discharge stroke. That is, FIG. 2(b)
The piston 32 is located on the rightmost side. In step S2, when there is a signal M from the microswitch, the pump is stopped in step S3, and then in step S
4, the timer T is started from zero, that is, from the reset state. Next, in step S5, after the time Ts, which is a predetermined time in the invention, has elapsed, the pressure P is measured in step S6.
【００１７】図３，図４において、各実線，破線，一点
鎖線，二点鎖線上の白丸が、吸引行程終了時点を示し、
同じく黒丸が、吸引行程終了時点から所定の各時間Ｔａ
（図３参照），Ｔｂ（図４参照）だけ経過した時点を示
す。この黒丸の時点に対応する各圧力が、ステップＳ６
で測定される圧力Ｐである。In FIGS. 3 and 4, white circles on each solid line, broken line, one-dot chain line, and two-dot chain line indicate the end of the suction stroke,
Similarly, the black circles indicate each predetermined time Ta from the end of the suction stroke.
(See FIG. 3), which indicates the time when Tb (see FIG. 4) has elapsed. Each pressure corresponding to the time point of this black circle is
is the pressure P measured at
【００１８】再び図５に戻って、以下のステップＳ７〜
Ｓ１２が、圧力Ｐと各設定値Ｚ１，Ｚ２，Ｚ３との比較
、およびこの比較に基づく原液残量程度の検知のプロセ
スである。なお、各設定値Ｚ１，Ｚ２，Ｚ３は、たとえ
ば図４に示してあるものである。ステップＳ７で、設定
値の種類に係るカウンタｉを初期化、ｉ＝１ をおこ
なう。ステップＳ８で、圧力Ｐと設定値Ｚｉとの大小比
較をし、その結果に応じて残量段階が各ステップＳ１１
，Ｓ１２で示される。なお、ｎはｉの最終値で、３であ
る。ここで残量段階は、図４におけるＤｏ，Ｄ１，Ｄ２
，Ｄ３で、各測定圧力の属する範囲で表される。すなわ
ち、測定圧力がＰ４なら残量段階はＤｏ、以下同様に、
測定圧力がＰ５なら残量段階はＤ１、測定圧力がＰ６な
ら残量段階はＤ２、測定圧力がＰ７なら残量段階はＤ３
、である。Returning to FIG. 5 again, the following steps S7 to
S12 is a process of comparing the pressure P with each of the set values Z1, Z2, and Z3, and detecting the remaining amount of stock solution based on this comparison. Note that each setting value Z1, Z2, and Z3 is shown in FIG. 4, for example. In step S7, a counter i related to the type of setting value is initialized so that i=1. In step S8, the pressure P is compared with the set value Zi, and depending on the result, the remaining amount level is changed to each step S11.
, S12. Note that n is the final value of i, which is 3. Here, the remaining amount stages are Do, D1, D2 in FIG.
, D3 is expressed as the range to which each measured pressure belongs. That is, if the measured pressure is P4, the remaining amount stage is Do, and so on.
If the measured pressure is P5, the remaining amount stage is D1, if the measured pressure is P6, the remaining amount stage is D2, and if the measured pressure is P7, the remaining amount stage is D3.
, is.
【００１９】[0019]
【発明の効果】請求項１に係る容器内の液体残量検知装
置では、制御・検知部によって、ポンプたとえば請求項
３のように往復ピストン形ポンプの吸引行程終了を位置
的に検知する位置センサの出力に基づき、吸引行程終了
時点でポンプが停止されるとともに、吸引行程終了時点
から所定時間後の圧力センサの出力に基づいて、たとえ
ば請求項２のように圧力センサの出力と、これに対応す
る一または二以上の設定値との比較に基づいて容器内の
液体残量の程度が求められる。その結果、時間設定が容
易になり、ひいては液体の容器内残量の程度を、液体粘
度や１回分の供給量ないし吐出量、そのときの容器内残
量などに影響されないで正確に検知することができる。
さらに、この検知に基づいて、液体容器の補充ないし交
換や、装置の即時停止、または所定回数の液体供給を継
続した後の装置停止など、状況に応じた適切な処置を講
じ得るようになる、というすぐれた効果がある。In the device for detecting the amount of liquid remaining in a container according to claim 1, the control/detection section uses a position sensor for positionally detecting the end of the suction stroke of a reciprocating piston pump, for example, as in claim 3. Based on the output of the pressure sensor, the pump is stopped at the end of the suction stroke, and based on the output of the pressure sensor after a predetermined period of time from the end of the suction stroke, the output of the pressure sensor is determined, for example, as in claim 2. The amount of liquid remaining in the container is determined based on a comparison with one or more set values. As a result, it becomes easier to set the time, and it is also possible to accurately detect the amount of liquid remaining in the container without being affected by the viscosity of the liquid, the amount of supply or discharge per batch, or the amount remaining in the container at that time. Can be done. Furthermore, based on this detection, it becomes possible to take appropriate measures depending on the situation, such as replenishing or replacing the liquid container, immediately stopping the device, or stopping the device after continuing to supply liquid a predetermined number of times. It has an excellent effect.
【図面の簡単な説明】[Brief explanation of the drawing]
【図１】本発明に係る実施例の構成図[Fig. 1] Configuration diagram of an embodiment according to the present invention
【図２】実施例におけるポンプに関し、（ａ） は吸引
行程終了時点の断面図、（ｂ） は吐出行程中の断面図
[Fig. 2] Regarding the pump in the example, (a) is a cross-sectional view at the end of the suction stroke, and (b) is a cross-sectional view during the discharge stroke.
【図３】実施例における低粘度原液のときの圧力のタイ
ムチャート[Figure 3] Time chart of pressure when using low viscosity stock solution in Example
【図４】実施例における高粘度原液のときの圧力のタイ
ムチャート[Figure 4] Time chart of pressure when using high viscosity stock solution in Example
【図５】実施例の動作を示すフローチャート[Figure 5] Flowchart showing the operation of the embodiment
【図６】従
来例の構成図[Figure 6] Configuration diagram of conventional example
【図７】従来例における低粘度原液のときの圧力のタイ
ムチャート[Figure 7] Time chart of pressure when using low viscosity stock solution in conventional example
【図８】従来例における高粘度原液のときの圧力のタイ
ムチャート[Figure 8] Time chart of pressure when using high viscosity stock solution in conventional example
１ 容器 ２ ケース ３ ポンプ ４ マイクロスイッチ ５ 圧力センサ ６ 制御・検知部 ７ 配管 ３１ ケーシング ３２ ピストン ３３ ピストンロッド ３４ 吸込弁 ３５ 吐出弁 1 Container 2 Case 3 Pump 4 Micro switch 5 Pressure sensor 6 Control/detection section 7 Piping 31 Casing 32 Piston 33 Piston rod 34 Suction valve 35 Discharge valve
Claims (3)
て接続され、前記液体を吸引，輸送するポンプと；前記
配管における圧力を測定する圧力センサと；前記ポンプ
の吸引に係る動作の終了を位置的に検知する位置センサ
と；吐出行程終了位置から吸引を開始させ後この位置セ
ンサの出力に基づいて吸引行程終了時点で前記ポンプを
停止させるとともに、前記吸引行程終了時点から所定時
間後の前記圧力センサの出力に基づいて前記容器内の液
体残量の程度を求める制御・検知部と；を備えることを
特徴とする容器内の液体残量検知装置。1. A pump that is connected to a flexible container in which a liquid is sealed via piping, and that suctions and transports the liquid; A pressure sensor that measures pressure in the piping; Operations related to suction of the pump. a position sensor that positionally detects the end of the discharge stroke; after starting suction from the discharge stroke end position, the pump is stopped at the end of the suction stroke based on the output of the position sensor, and for a predetermined period of time from the end of the suction stroke; A device for detecting a remaining amount of liquid in a container, comprising: a control/detection unit that determines the amount of remaining liquid in the container based on the output of the pressure sensor.
知部は、吸引行程終了時点から所定時間後の圧力センサ
の出力と、これに対応する一または二以上の設定値との
比較に基づいて容器内の液体残量の程度を求める構成に
したことを特徴とする容器内の液体残量検知装置。2. The apparatus according to claim 1, wherein the control/detection section compares the output of the pressure sensor after a predetermined time from the end of the suction stroke with one or more corresponding set values. 1. A device for detecting a remaining amount of liquid in a container, characterized in that the device is configured to determine the amount of remaining liquid in the container based on the amount of liquid remaining in the container.
ポンプは、往復ピストン形であることを特徴とする容器
内の液体残量検知装置。3. The apparatus according to claim 1 or 2,
A device for detecting the amount of liquid remaining in a container, characterized in that the pump is a reciprocating piston type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021229A JPH04259822A (en) | 1991-02-15 | 1991-02-15 | Device for detecting remaining amount of liquid in container |
| KR1019920002082A KR960015075B1 (en) | 1991-02-15 | 1992-02-13 | Remaining flow level detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3021229A JPH04259822A (en) | 1991-02-15 | 1991-02-15 | Device for detecting remaining amount of liquid in container |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04259822A true JPH04259822A (en) | 1992-09-16 |
Family
ID=12049198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3021229A Pending JPH04259822A (en) | 1991-02-15 | 1991-02-15 | Device for detecting remaining amount of liquid in container |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04259822A (en) |
| KR (1) | KR960015075B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100476619B1 (en) * | 1997-06-16 | 2005-07-07 | 삼성전자주식회사 | Supports with sensors for measuring the remaining volume of waste-saving container contents |
| CN108474684A (en) * | 2016-01-18 | 2018-08-31 | 固瑞克明尼苏达有限公司 | Continuous reservoir level monitoring |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100296055B1 (en) * | 1998-12-30 | 2001-08-07 | 백영문 | Cart of parking equipment |
-
1991
- 1991-02-15 JP JP3021229A patent/JPH04259822A/en active Pending
-
1992
- 1992-02-13 KR KR1019920002082A patent/KR960015075B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100476619B1 (en) * | 1997-06-16 | 2005-07-07 | 삼성전자주식회사 | Supports with sensors for measuring the remaining volume of waste-saving container contents |
| CN108474684A (en) * | 2016-01-18 | 2018-08-31 | 固瑞克明尼苏达有限公司 | Continuous reservoir level monitoring |
Also Published As
| Publication number | Publication date |
|---|---|
| KR960015075B1 (en) | 1996-10-24 |
| KR920016819A (en) | 1992-09-25 |
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