【発明の詳細な説明】本発明は流体が所定の圧力を保持してポンプにより供給
されるように、ポンプのモータの回転数を制御する装置
に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for controlling the rotation speed of a pump motor so that fluid is supplied by the pump while maintaining a predetermined pressure.
コルフ型人工腎臓施行患者に於ても体内水分除去の目的
で限外濾過法が広く行われているが、コルフ型人工腎臓
では周知の通り血液回路静脈側にクランプを置き、血液
ポンプにより駆出される血流を制御することにより限外
濾過法が行なわれており、透析膜（セロファン膜）にか
かる圧力が高くなり過ぎてセロファン膜の破綻を来たす
ことのないよう指針接点付圧力計による警報装置を附属
せしめて、圧が上昇し過ぎた場合、警報によりその都度
人間が装置の再調整を行なうことになっている。Ultrafiltration is widely used in patients undergoing Corfu type artificial kidneys to remove body water, but as is well known, with Corfu type artificial kidneys, a clamp is placed on the venous side of the blood circuit, and blood is pumped out using a blood pump. Ultrafiltration is carried out by controlling the blood flow that flows through the membrane, and a warning device with a pressure gauge with pointer contacts is installed to prevent the pressure on the dialysis membrane (cellophane membrane) from becoming too high and causing the cellophane membrane to fail. If the pressure rises too much, an alarm will be issued and a person will be required to readjust the device each time.
然し乍らオートメーションの進んだ現代、このような方
法は、余りにも原始的非能率的なばかりでなく、看護体
勢にもかなり余分な神経を費さしめる原因になっている
という欠陥を免れ得なかった。However, in today's age of advanced automation, this method is not only extremely primitive and inefficient, but also has the drawback of requiring a considerable amount of extra nerve in the nursing position.
本発明は上記欠陥を除去せしめるべく圧力自動制御装置
を開発したものである。The present invention has developed an automatic pressure control device to eliminate the above defects.
即ち、斯様な圧力の自動制御を行なうためには、予め設
定した圧に達すると自動的にポンプの回転が調整され圧
に感じて常に設定圧に応じた血液ポンプの回転を行なわ
しめるように、圧のフィードバック系を光又は磁界利用
の変換係を用いて行なうものである。In other words, in order to perform such automatic pressure control, the rotation of the pump is automatically adjusted when a preset pressure is reached, and the blood pump is always rotated according to the set pressure by sensing the pressure. , the pressure feedback system is performed using a conversion element using light or magnetic field.
以下、本発明の実施例図面について説明する。Hereinafter, embodiment drawings of the present invention will be described.
第１図乃至第３図に於て、ＢはやＮ高トルク型の通常の
ブルドン管式圧力計であって、該圧力計Ｂに設定圧を自
由に変えることのできる設定針２を設ける。In FIGS. 1 to 3, B is an ordinary Bourdon tube type pressure gauge of N high torque type, and the pressure gauge B is provided with a setting needle 2 that can freely change the set pressure.
７は受光板であって、該受光板７には扇形の硫化カドミ
ウム光導電素子９を設置し、これを前記設定針２と同軸
１０に軸着するものとする。Reference numeral 7 denotes a light-receiving plate, and a fan-shaped cadmium sulfide photoconductive element 9 is installed on the light-receiving plate 7, and this is attached to the same axis 10 as the setting needle 2.
なお、上記受光板７に代えて扇形磁石７′を使用するこ
とも可能である。Note that it is also possible to use a fan-shaped magnet 7' in place of the light receiving plate 7.
（第５図、第６図Ａ参照）次に前記圧力計Ｂの指針１の軸１１を裏側へ伸して該軸
１１の回転に従って動く遮光板６を取り付けるものとす
る。(See FIGS. 5 and 6A) Next, the shaft 11 of the pointer 1 of the pressure gauge B is extended to the back side, and a light shielding plate 6 that moves according to the rotation of the shaft 11 is attached.
これによって圧が上昇して指針１が設定針２に近ずくと
遮光板６により、光導電素子９にあたる光が遮られ光導
電素子９の電気抵抗を増大せしめる。As a result, when the pressure increases and the pointer 1 approaches the setting hand 2, the light impinging on the photoconductive element 9 is blocked by the light shielding plate 6, increasing the electrical resistance of the photoconductive element 9.
この抵抗値の変化を第４図に図示の如く単接合トランジ
スタ式の位相制御回路へ導き、サイリスタ１４によりポ
ンプ８駆動用の分液モータＭの回転子に供給される電圧
を調整することにより、静止しオナード制御によ′つて
モータＭの回転を制御せしめるものである。By guiding this change in resistance value to a single junction transistor phase control circuit as shown in FIG. 4, and adjusting the voltage supplied to the rotor of the separation motor M for driving the pump 8 by the thyristor 14, The motor M is stationary and the rotation of the motor M is controlled by onard control.
第４図中Ｆは分液モータＭの界磁巻線を示し、Ａ” 、
Ｉ３’／ 。In Fig. 4, F indicates the field winding of the separation motor M, and A'',
I3'/.
Ｃ／／は同一パルストランスである。C// is the same pulse transformer.
而して、前記遮光板６は第３図に図示するように、軸心
Ｏに関し中心角Ｂを有するように形成する。The light shielding plate 6 is formed to have a central angle B with respect to the axis O, as shown in FIG.
該中心角Ｂは前記光導電素子９の中心角αよりも犬とな
すと共に、光導電素子を少しづつ覆うように、即ち、圧
力の変化とモータの１駆動との比例制御の効率を良好な
らしめるために遮光板６の光導電素子９側に偏倚部１５
を形成する。The central angle B is set to be smaller than the central angle α of the photoconductive element 9, and is set so as to cover the photoconductive element little by little, that is, to improve the efficiency of proportional control between pressure change and one drive of the motor. A biased portion 15 is provided on the photoconductive element 9 side of the light shielding plate 6 in order to
form.
該偏倚部１５は軸心Ｏの方向に対し、θ−１５０±５０
の偏倚角を有するものとする。The biasing portion 15 has an angle of θ-150±50 with respect to the direction of the axis O.
It is assumed that the deflection angle is .
前記比例制御の比率は変えることができる。The ratio of the proportional control can be varied.
即ち、前記遮光板６の形状を変えることにより任意の遮
光−抵抗値変化函数を有するものに作ることができる。That is, by changing the shape of the light shielding plate 6, it can be made to have an arbitrary light shielding-resistance value change function.
第３図に図示の遮光板６に於ては、遮光板６の両側端縁
のうち初めに光導電素子９に接近する方の側端縁１７か
ら該側端縁１７と略々直角方向に略々三角状の切欠溝１
８を切欠しであるのであって、該切欠溝１８の形状を変
えることによって比例制御の比率を変えることができる
。In the light-shielding plate 6 shown in FIG. Approximately triangular notch groove 1
8 is a notch, and by changing the shape of the notch groove 18, the proportional control ratio can be changed.
斯様な過程は圧力計Ｂの裏側に設けた小暗室５で行なわ
れ、光源としては輝度の安定した電気蛍光板４を設ける
。Such a process is carried out in a small dark room 5 provided on the back side of the pressure gauge B, and an electroluminescent screen 4 with stable brightness is provided as a light source.
３は圧力計Ｂと被測定部（第１図に於ては濾過室１９）
とを連絡するための接着管である。3 is the pressure gauge B and the part to be measured (filtration chamber 19 in Figure 1)
This is an adhesive tube for communicating with.
なお硫化カドミウム光導電素子９は約１ワツトの容量を
有し、これは位相制御回路に本来用いられている呵責抵
抗器の容量と略々同一であり、また電気蛍光板４の輝度
を調整することにより、光導電素子９を所望の抵抗値範
囲にセットすることもできるので、光が遮ぎられること
による抵抗値の変化は何等の増巾を必要とせず、そのま
＼制御入力として直接位相制御回路に印加せしめること
が可能である。The cadmium sulfide photoconductive element 9 has a capacity of about 1 watt, which is approximately the same as the capacity of a resistor originally used in the phase control circuit, and can also be used to adjust the brightness of the electroluminescent screen 4. Since the photoconductive element 9 can be set within a desired resistance value range, the change in resistance value due to light blocking does not require any amplification, and can be directly controlled as a control input. It is possible to apply it to the circuit.
ＥＬ −ＣｄＳ系は前記のように実施上大きな利点を有
するものであるが、トランスジューサーに変えることで
同じ目的を遠戚することもできる。Although the EL-CdS system has great practical advantages as described above, the same purpose can be achieved by replacing it with a transducer.
第５図図示のものは、磁気抵抗素子を用いた圧力自動制
御の電気回路図であり、ＭＲ（磁気抵抗素子）又はＳＭ
Ｄ （ソニーマグネットダイオード）等の磁界印加に
より抵抗値の変わる素子６′を圧力計釣針１に同軸に設
置し、これに対応して巾広い扇形磁石７′を設定針２に
同軸に設置し、磁石７′から外れる位置で負帰還するよ
うにする。The one shown in Figure 5 is an electric circuit diagram of automatic pressure control using a magnetoresistive element, and it is an electric circuit diagram for automatic pressure control using a magnetoresistive element.
An element 6' whose resistance value changes when a magnetic field is applied, such as D (Sony magnet diode), is installed coaxially with the pressure gauge fishhook 1, and correspondingly, a wide fan-shaped magnet 7' is installed coaxially with the setting needle 2. Negative feedback is provided at a position away from the magnet 7'.
この場合、圧力計の高圧側に位置する方で除々に磁場が
減少するよう高圧側のＮＳ間隔を低圧側より大きくして
おくようにする。In this case, the NS interval on the high pressure side is made larger than on the low pressure side so that the magnetic field gradually decreases on the high pressure side of the pressure gauge.
又、第６図Ａ、Ｂ、Ｃは夫々ホーｌし素子、フォトトラ
ンジスター（又はフォトダイオード）、太陽電池、ブル
ーセル等の光起電力素子を用いた圧力自動制御の電気回
路図であって、第６図Ａ、Ｂ、Ｃの端子Ａ／ 、 Ｂ／
・Ｃ′の執れかの出力を制御電圧として第６図り、Ｅ、
Ｆの端子ａ、ｂ、ｃの執れかに印加するものであり、組
合せはこれらの間で任意に行ない得るのである。Further, FIGS. 6A, B, and C are electrical circuit diagrams of automatic pressure control using photovoltaic elements such as hole elements, phototransistors (or photodiodes), solar cells, and blue cells, respectively. Terminals A/, B/ in Figure 6 A, B, and C
・6th diagram using the output of C' as the control voltage, E,
The voltage is applied to terminals a, b, and c of F, and any combination can be made between these terminals.
この場合、トランスジューサーの出力は少ないので第６
図Ａ、Ｂ、Ｃに図示の通り増巾器を設ける。In this case, the output of the transducer is small, so the sixth
Amplifiers are provided as shown in Figures A, B, and C.
本発明は上記のような構成となしたことにより、従来の
速度制御の摘みをそのまＳ光導電素子、ＭＲ或はＳＭＤ
又はホール素子で置き変えることが可能となり、このた
めに全体としての制御回路が極めて簡単なもので済むの
であり、これによって自動的に血液ポンプ８の回転が調
整され、而かもその制御は能は長時間に亘り正確且つ安
定して得られると云う治療効果に優れた特長を有するも
のである。By having the above-mentioned configuration, the present invention allows the conventional speed control knob to be directly connected to an S photoconductive element, MR or SMD.
Alternatively, it can be replaced with a Hall element, and the overall control circuit can therefore be extremely simple, and the rotation of the blood pump 8 can be automatically adjusted. It has an excellent therapeutic effect that can be obtained accurately and stably over a long period of time.
なお、本発明装置は人工腎臓用だけでなく、一般の流体
輸送の圧力制御にも有効な装置である。The device of the present invention is effective not only for artificial kidneys but also for pressure control in general fluid transport.
本発明に於ては、前記遮光板６は、その回動に伴い、前
記光導電素子９を少しづつ覆うように、遮光板６の光導
電素子に近い方の側面部に偏倚部１５を形成せしめ、而
かも遮光板６の両側端縁のうち初めに光導電素子に接近
する方の側端縁から該側端縁と略々直角方向に略々三角
状の切欠溝１８を切欠し、該切欠溝１８の形状を変える
ことによって比例制御の比率を変えるものである構成と
なしたことにより、比例制御の比率を微細に変え得て、
ポンプの回転数制御の細かな調整を適確に為し得るもの
で、この点でコルフ型人工腎臓の制御装置としてまこと
に適切なものである。In the present invention, as the light shielding plate 6 rotates, a biased portion 15 is formed on the side surface of the light shielding plate 6 closer to the photoconductive element so as to gradually cover the photoconductive element 9. In addition, a substantially triangular notch groove 18 is cut out from the side edge of the light shielding plate 6 that approaches the photoconductive element first in a direction substantially perpendicular to the side edge. By changing the shape of the notch groove 18 to change the ratio of proportional control, the ratio of proportional control can be changed minutely.
It is possible to precisely make fine adjustments to control the rotational speed of the pump, and in this respect it is truly suitable as a control device for a Corfu-type artificial kidney.
第１図はコイル型人工腎臓の血液循環回路に本発明の実
施例を組み込んだもの、第２図ｉＡは同上における圧力
計の正面図、第２図Ｂは第２図Ａの圧力計の部分断匝側
面図、第３図は第２図示の圧力計の裏面の一部解体を表
わす背面図、第４図は圧力自動制御の電気回路図、第５
図は磁気抵抗素子を用いた圧力自動制御の電気回路図、
第６図Ａ、Ｂ、Ｃ，Ｄ、Ｅ、Ｆはホール素子、フォトト
ランジスター（又はフォトダイオード）及び光超電力素
子を用いた場合の圧力自動制御１回路図である。なお、図中１は指針、２は設定針、４は電気蛍光板、６
は遮光板、６′はＭＲ又はＳＭＤ、６〃はホール素子、
７は受光板、８は血液ポンプ、９は光導電素子、ｉｏ、
ｉ’＋は軸、１３は単接合トランジスタ、１４はサイリ
スク、１５は遮光板の偏倚部、１７は遮光板６の側端縁
、１８は略々三角形状の切欠溝、１９は濾過室、Ｍは血
液ポンプ８駆動用の分液モータ、Ａは分液モータＭの回
転子、Ｆは分液モータＭの界磁巻線、Ｂは圧力計、Ｏは
軸心、Ａ／ 、 Ｂ／ 、 ｃ／は端子、ａ、ｂ、ｃは
前記端子Ａ／ 、 Ｂ／ 、 Ｃ／のうち執れかを接続
する端子。Figure 1 shows an embodiment of the present invention incorporated into the blood circulation circuit of a coil-type artificial kidney, Figure 2 iA is a front view of the pressure gauge in the same as above, and Figure 2B is a portion of the pressure gauge in Figure 2A. Figure 3 is a partially disassembled rear view of the back of the pressure gauge shown in Figure 2, Figure 4 is an electric circuit diagram for automatic pressure control, and Figure 5 is a side view of the broken box.
The figure shows an electric circuit diagram of automatic pressure control using a magnetoresistive element.
FIGS. 6A, B, C, D, E, and F are circuit diagrams of automatic pressure control using a Hall element, a phototransistor (or photodiode), and a photosuperpower device. In addition, in the figure, 1 is a pointer, 2 is a setting hand, 4 is an electroluminescent screen, and 6
is a light shielding plate, 6′ is MR or SMD, 6 is a Hall element,
7 is a light receiving plate, 8 is a blood pump, 9 is a photoconductive element, io,
i'+ is an axis, 13 is a single junction transistor, 14 is a silisk, 15 is a biased portion of the light shielding plate, 17 is a side edge of the light shielding plate 6, 18 is a substantially triangular notch groove, 19 is a filter chamber, M is the separation motor for driving the blood pump 8, A is the rotor of the separation motor M, F is the field winding of the separation motor M, B is the pressure gauge, O is the axis, A/ , B/ , c / is a terminal, and a, b, and c are terminals to which one of the terminals A/, B/, and C/ is connected.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54026191AJPS5857767B2 (en) | 1979-03-08 | 1979-03-08 | Automatic pressure control device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54026191AJPS5857767B2 (en) | 1979-03-08 | 1979-03-08 | Automatic pressure control device |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3168473ADivisionJPS5527371B2 (en) | 1973-03-19 | 1973-03-19 |
| Publication Number | Publication Date |
|---|---|
| JPS5597611A JPS5597611A (en) | 1980-07-25 |
| JPS5857767B2true JPS5857767B2 (en) | 1983-12-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54026191AExpiredJPS5857767B2 (en) | 1979-03-08 | 1979-03-08 | Automatic pressure control device |
| Country | Link |
|---|---|
| JP (1) | JPS5857767B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8927900B2 (en) | 2000-09-13 | 2015-01-06 | Hamamatsu Photonics K.K. | Method of cutting a substrate, method of processing a wafer-like object, and method of manufacturing a semiconductor device |
| US8969752B2 (en) | 2003-03-12 | 2015-03-03 | Hamamatsu Photonics K.K. | Laser processing method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6431411U (en)* | 1987-08-13 | 1989-02-27 |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4011049Y1 (en)* | 1964-02-04 | 1965-04-17 | ||
| JPS44314Y1 (en)* | 1966-02-04 | 1969-01-08 |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8927900B2 (en) | 2000-09-13 | 2015-01-06 | Hamamatsu Photonics K.K. | Method of cutting a substrate, method of processing a wafer-like object, and method of manufacturing a semiconductor device |
| US8933369B2 (en) | 2000-09-13 | 2015-01-13 | Hamamatsu Photonics K.K. | Method of cutting a substrate and method of manufacturing a semiconductor device |
| US8969761B2 (en) | 2000-09-13 | 2015-03-03 | Hamamatsu Photonics K.K. | Method of cutting a wafer-like object and semiconductor chip |
| US8969752B2 (en) | 2003-03-12 | 2015-03-03 | Hamamatsu Photonics K.K. | Laser processing method |
| Publication number | Publication date |
|---|---|
| JPS5597611A (en) | 1980-07-25 |
| Publication | Publication Date | Title |
|---|---|---|
| US3430053A (en) | Method for aperture control in which the loop gain is caused to vanish when the absolute value of the error is less than a given value and is caused to assume its nominal value when the absolute value of the error is greater than a second given value | |
| JPS5857767B2 (en) | Automatic pressure control device | |
| US3082672A (en) | Photographic camera with interchangeable objectives | |
| JPS6132659B1 (en) | ||
| US3455227A (en) | Exposure control means for photographic cameras | |
| JPS6347075B2 (en) | ||
| JP2005122089A (en) | Imaging apparatus equipped with control module | |
| DK1293A (en) | Method of controlling an electric motor operating a centrifugal pump | |
| JPS5623076A (en) | Manual stop-down remote control device for television camera | |
| CN102158144A (en) | Micromotor drive circuit of automatic aperture of digital gastrointestinal machine | |
| US3450969A (en) | Photo-resistance bridge servomechanism | |
| US3313224A (en) | Automatic aperture control for photographic cameras | |
| US3079851A (en) | Automatic exposure control for cameras | |
| US3678354A (en) | A dc motor control apparatus | |
| JP3238539B2 (en) | Light control device | |
| US3571683A (en) | Servomechanism with driving rotor winding and braking rotor winding | |
| US3435747A (en) | Electromagnetic controlling device for exposure | |
| JP2614351B2 (en) | Light amount control device having position detecting device | |
| US3291022A (en) | Exposure control systems for cameras | |
| US3211071A (en) | Photoelectric devices | |
| US3995285A (en) | Photographic camera with automatically controlled filter | |
| CN218037757U (en) | Light radiation source tracker and control circuit | |
| JPH05119366A (en) | Diaphragm controller for solid-state image pickup device | |
| JPH02287446A (en) | Light quantity adjusting device | |
| KR900003888Y1 (en) | Brushless fan motor |