JPS61167380A - Valve controller - Google Patents

Valve controller

Info

Publication number
JPS61167380A
JPS61167380A JP723285A JP723285A JPS61167380A JP S61167380 A JPS61167380 A JP S61167380A JP 723285 A JP723285 A JP 723285A JP 723285 A JP723285 A JP 723285A JP S61167380 A JPS61167380 A JP S61167380A
Authority
JP
Japan
Prior art keywords
motor
valve
current
section
periodicity
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
JP723285A
Other languages
Japanese (ja)
Inventor
Chiyuu Kawaguchiya
川口屋　仲
Kiyoji Iemura
家村　喜代次
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.)
M SYST GIKEN KK
Original Assignee
M SYST GIKEN 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 M SYST GIKEN KK filed Critical M SYST GIKEN KK
Priority to JP723285A priority Critical patent/JPS61167380A/en
Publication of JPS61167380A publication Critical patent/JPS61167380A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/22—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor in either direction of rotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To eliminate a detector for detecting the full open and full close of a valve by detecting that the valve is fully opened or closed by the presence or absence of a pulsation of a current flowing to a DC motor. CONSTITUTION:When a DC motor 1 is rotatably driven and a valve 2 is being opened or closed, a current flowed to the motor 1 becomes pulsating having a periodicity. When the valve 2 is fully opened or closed, a drive shaft of the valve 2 is locked to stop rotating of the motor 1, and the periodicity of the pulsating current is eliminated. The period detected by a period detector 10 becomes larger than the set value, a signal is applied to a polarity changeover switch 6 from a comparator 11, the switch 6 is operated to stop supplying a current to the motor 1.

Description

【発明の詳細な説明】 く技術分野〉 本発明はバルブ制御装置、より詳しくは、バルブが全開
あるいは全開になるとバルブを駆動する直流モータへの
給電を停止するバルブ制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a valve control device, and more particularly, to a valve control device that stops power supply to a DC motor that drives the valve when the valve is fully opened or fully opened.

〈従来技術〉 従来、電動バルブにおいては、バルブが全開あるいは全
開になると、トルクスイッチやリミットスイッチ等によ
り全開あるいは全閉になったことを検出し、このトルク
スイッチやリミットスイッチ等からの信号によりモータ
への給電を停止していた。<Prior art> Conventionally, in electric valves, when the valve is fully open or fully open, a torque switch, limit switch, etc. detects that the valve is fully open or fully closed, and a signal from the torque switch, limit switch, etc. The power supply had been stopped.

このように、従来では、バルブの全開及び全閉を検出す
るのにトルクスイッチやりミントスインチ等の検出装置
がバルブの制御装置とは別に必要となるので、コストが
高くなるという欠点を有していた。さらに、トルクスイ
ッチやリミットスイッチ等からの信号をバルブの制御装
置へ伝送するための配線が必要になり、煩雑な配線作業
を要し、これもコストアップの原因になっていた。In this way, in the past, a detection device such as a torque switch or a mint switch is required in addition to the valve control device to detect whether the valve is fully open or fully closed, which has the disadvantage of increasing costs. Ta. Furthermore, wiring is required to transmit signals from the torque switch, limit switch, etc. to the valve control device, which requires complicated wiring work, which also causes an increase in costs.

〈発明の目的〉 本発明は上記事情に鑑みてなされたものであり、その目
的は、バルブの全開及び全閉を検出する検出装置を不要
としたバルブ制御装置を提供することである。<Objective of the Invention> The present invention has been made in view of the above circumstances, and its object is to provide a valve control device that does not require a detection device for detecting whether a valve is fully open or fully closed.

〈発明の構成〉 本発明においては、バルブを駆動する直流モータへ流れ
る電流の上記直流モータの整流子の回転により生じる脈
流の°有無を検出する検出手段と、この検出手段からの
信号に応じて上記直流モータへの給電をスイッチングす
るスイッチング手段とを備え、上記バルブが全開あるい
は全開になり、上記直流モータが停止して上記電流の脈
流が無くなると、上記スイッチング手段により上記直流
モータへの給電を停止するようにしたことを特徴とする
。<Structure of the Invention> In the present invention, there is provided a detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor in the current flowing to the DC motor that drives the valve, and a and switching means for switching the power supply to the DC motor by the switching means, when the valve is fully opened or fully opened and the DC motor stops and the ripple current disappears, the switching means switches the power supply to the DC motor. The feature is that the power supply is stopped.

〈実施例〉 以下、本発明の一実施例を図面に基づいて説明する。<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.

直流モータ１は、バルブ２を開閉駆動する。この直流モ
ータ１には、端子３，４．ダイオードブリッジ５．極性
切替スイッチ部６を介して図示しない直流電源から給電
され、端子３が子種で端子４が一極の極性で給電される
と、直流モータ１は正転してバルブ２が開動作を行ない
、端子３が一極で端子４が子種の極性で給電されると、
直流モータ１は逆転してバルブ２が閉動作を行なう。A DC motor 1 drives a valve 2 to open and close. This DC motor 1 has terminals 3, 4. Diode bridge5. When power is supplied from a DC power source (not shown) through the polarity changeover switch 6, and the terminal 3 is a terminal and the terminal 4 is supplied with one polarity, the DC motor 1 rotates forward and the valve 2 performs an opening operation. , when terminal 3 is supplied with one polarity and terminal 4 is supplied with a secondary polarity,
The DC motor 1 rotates in reverse and the valve 2 performs a closing operation.

電流電圧変換部８は、直流モータ１に流れる電流の変化
を検出し、これを電圧波形に変換する。The current-voltage converter 8 detects a change in the current flowing through the DC motor 1 and converts it into a voltage waveform.

直流モータ１の電機子電流は、ブラシと整流子を介して
供給される。したがって、直流モータｌが回転駆動され
ているときには、整流子が回転することにより、直流モ
ータ１へ供給される電流は周期をもった脈流になる。そ
して、直流モータ１が回転駆動されているときには、電
流電圧変換部８から出力される電圧波形は、この電流の
脈流に対応している。振幅増幅部９は、電流電圧変換部
８からの電圧波形を増幅する。The armature current of the DC motor 1 is supplied via brushes and a commutator. Therefore, when the DC motor 1 is driven to rotate, the commutator rotates, so that the current supplied to the DC motor 1 becomes a periodic pulsating current. When the DC motor 1 is rotationally driven, the voltage waveform output from the current-voltage converter 8 corresponds to this pulsating current. The amplitude amplification section 9 amplifies the voltage waveform from the current-voltage conversion section 8.

周期検出部１０は、電流の脈流に対応した振幅増幅部９
からの電圧波形の周期を検出する。比較部１１は、周期
検出部１０で検出された周期と設定値との大小比較を行
ない、この比較の結果に応じた信号を極性切替スイッチ
部６に与える。極性切替スイッチ部６は、比較部１１か
らの信号に応じて直流モータ１への給電をスイッチング
する。The period detection section 10 includes an amplitude amplification section 9 corresponding to the pulsating current flow.
Detect the period of the voltage waveform from. The comparison section 11 compares the period detected by the period detection section 10 with the set value, and provides a signal according to the result of this comparison to the polarity changeover switch section 6. The polarity changeover switch section 6 switches the power supply to the DC motor 1 according to the signal from the comparison section 11 .

上述のように、直流モータ１が回転駆動されているとき
には、直流モータ１へ供給される電流が周期性をもった
脈流になる。したがって、この電流の脈流の周期性が検
出されると、直流モ°−夕１が回転駆動されていること
になり、バルブ２の開閉動作が行なわれていることにな
る。一方、電流の脈流の周期性が無くなると、直流モー
タ１が停止したことになり、バルブ２が全開あるいは全
開の状態になる。As described above, when the DC motor 1 is rotationally driven, the current supplied to the DC motor 1 becomes a periodic pulsating current. Therefore, when the periodicity of this pulsating current is detected, it means that the DC motor 1 is being driven to rotate, and that the valve 2 is being opened and closed. On the other hand, when the periodicity of the pulsating current disappears, the DC motor 1 has stopped, and the valve 2 is fully open or fully open.

いま、直流モータ１が回転駆動され、バルブ２が開閉動
作中であると、直流モータｌへ流れる電流が周期性をも
った脈流になる。そして、周期検出部１０で検出された
電流の周期が比較部１１において予じめ設定された値と
比較され、この場合には、電流の周期が設定値より小で
あるので、比較部１１から極性切替スイッチ部６へ信号
は与えられず、直流モータ１への給電が続けられる。Now, when the DC motor 1 is rotationally driven and the valve 2 is opening and closing, the current flowing to the DC motor 1 becomes a pulsating current with periodicity. Then, the period of the current detected by the period detection section 10 is compared with a preset value in the comparison section 11. In this case, since the period of the current is smaller than the set value, the period of the current detected by the comparison section 11 is No signal is given to the polarity changeover switch section 6, and power supply to the DC motor 1 continues.

バルブ２が全開あるいは全開になると、バルブ２の駆動
軸がロックして直流モータｌの回転が停止し、電流の脈
流の周期性が無くなる。そして、周期検出部１０で検出
された周期が設定値より大になり、比較部１１から極性
切替スイッチ部６へ信号が与えられ、極性切替スイッチ
部６が動作して直流モータ１への給電が停止される。When the valve 2 is fully opened or fully opened, the drive shaft of the valve 2 is locked, the rotation of the DC motor 1 is stopped, and the periodicity of the pulsating current is eliminated. Then, the period detected by the period detection section 10 becomes larger than the set value, a signal is given from the comparison section 11 to the polarity changeover switch section 6, and the polarity changeover switch section 6 operates to stop the power supply to the DC motor 1. will be stopped.

周期検出部１０と比較部１１は、例えば、コンデンサと
スイッチング素子で構成し、コンデンサの充放電を利用
し、直流モータ１の電流の周期性に応じて充放電を繰り
返し、周期性が無くなると、充電電圧が所定値以上ある
いは以下になるのを検出して、極性切替スイッチ部６を
動作させる。あるいは、周期検出部１０と比較部１１を
単安定マルチパイブレークで構成し、直流モータ１の電
流の周期性に応じて出力状態が反転を繰り返し、周期性
が無くなると出力状態が反転しなくなるという単安定マ
ルチバイブレータの動作を利用すればよい。The period detection section 10 and the comparison section 11 are composed of, for example, a capacitor and a switching element, and use charging and discharging of the capacitor to repeat charging and discharging according to the periodicity of the current of the DC motor 1, and when the periodicity disappears, When it is detected that the charging voltage is above or below a predetermined value, the polarity changeover switch section 6 is operated. Alternatively, the period detection section 10 and the comparison section 11 may be configured with a monostable multi-pie break, and the output state will repeatedly invert according to the periodicity of the current of the DC motor 1, and when the periodicity disappears, the output state will no longer invert. The operation of a monostable multivibrator can be used.

〈発明の効果〉 以上説明したように、本発明においては、バルブを駆動
する直流モータへ流れる電流の脈流の有無を検出するこ
とにより、バルブが全開あるいは全開の状態にあるとし
て、直流モータへの給電を停止するようにしたので、バ
ルブの全開及び全閉を検出するための検出装置が不要に
なるとともに、検出装置からの信号をバルブの制御装置
へ伝送するための配線が不要となり、コストの低減が可
能になる。<Effects of the Invention> As explained above, in the present invention, by detecting the presence or absence of pulsating current flowing to the DC motor that drives the valve, it is assumed that the valve is fully open or fully open, and the DC motor is Since the power supply to the valve is stopped, there is no need for a detection device to detect whether the valve is fully open or fully closed, and there is no need for wiring to transmit signals from the detection device to the valve control device, reducing costs. This makes it possible to reduce

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

図面は本発明実施例のブロック構成図である。 １・・・直流モータ ２…バルブ ６・・・極性切替スイッチ部 ８・・・電流電圧変換部 ９・・・振幅増幅部 １０・・・周期検出部 １１・・・比較部 The drawing is a block diagram of an embodiment of the present invention. 1...DC motor 2...Valve 6...Polarity switch section 8...Current voltage conversion section 9... Amplitude amplification section 10...Period detection section 11...Comparison section

Claims (1)

【特許請求の範囲】[Claims] （１）バルブを駆動する直流モータへ流れる電流の上記
直流モータの整流子の回転により生じる脈流の有無を検
出する検出手段と、この検出手段からの信号に応じて上
記直流モータへの給電をスイッチングするスイッチング
手段とを備え、上記バルブが全開あるいは全閉になり、
上記直流モータが停止して上記電流の脈流が無くなると
、上記スイッチング手段により上記直流モータへの給電
を停止するようにしたことを特徴とするバルブ制御装置
。(1) A detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor in the current flowing to the DC motor that drives the valve, and a detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor, and supplying power to the DC motor in accordance with a signal from the detection means. and a switching means for switching, the valve being fully open or fully closed;
A valve control device characterized in that when the DC motor stops and the pulsating current disappears, the switching means stops power supply to the DC motor.
JP723285A 1985-01-17 1985-01-17 Valve controller Pending JPS61167380A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP723285A JPS61167380A (en) 1985-01-17 1985-01-17 Valve controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP723285A JPS61167380A (en) 1985-01-17 1985-01-17 Valve controller

Publications (1)

Publication Number Publication Date
JPS61167380A true JPS61167380A (en) 1986-07-29

Family

ID=11660247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP723285A Pending JPS61167380A (en) 1985-01-17 1985-01-17 Valve controller

Country Status (1)

Country Link
JP (1) JPS61167380A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144023A (en) * 1974-05-10 1975-11-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144023A (en) * 1974-05-10 1975-11-19

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