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電源用の電池と、電流の印加方向でガス流路の開動作あるいは閉動作が可能で、かつ電流の印加を停止するとその時の開状態あるいは閉状態を保持する自己保持形の電磁弁と、複数のスイッチグ素子で構成し前記電池から前記電磁弁に印加する電流の方向を自在に変更可能とした弁駆動回路と、前記弁駆動回路を構成するスイッチング素子の異常の有無を確認するための機能確認回路と、前記弁駆動回路と前記機能確認回路を接続し確認するスイッチング素子に応じて回路の切り換えを行うスイッチ回路と、必要に応じて前記電磁弁を開閉するための開弁信号及び閉弁信号を前記弁駆動回路に出力すると共に前記スイッチ回路を制御して弁駆動回路の異常の有無を判定する制御手段を備えたガス遮断装置。
A battery for power supply, can opening operation or closing operation of the gas passage in the application direction of the current, and when stopping the application of current and the electromagnetic valve of the self-holding type for holding the opened state or closed state at that time, a plurality And a function check for confirming whether or not there is an abnormality in the switching element that constitutes the valve drive circuit, and the direction of the current applied from the battery to the solenoid valve can be freely changed. A circuit, a switch circuit for switching the circuit in accordance with a switching element that connects and confirms the valve drive circuit and the function confirmation circuit, and a valve opening signal and a valve closing signal for opening and closing the electromagnetic valve as necessary And a control means for controlling the switch circuit to determine whether or not the valve drive circuit is abnormal.
弁駆動回路は、４個のスイッチング素子で構成され、制御手段は前記４つのスイッチング素子のそれぞれを個々に制御可能に構成し、機能確認回路は、個々に制御されるスイッチング素子に対応して切り換えられるスイッチ回路を介して導通の有無を制御手段に入力するようにした請求項１記載のガス遮断装置。
The valve drive circuit is composed of four switching elements, the control means is configured to be able to control each of the four switching elements individually, and the function confirmation circuit is switched corresponding to the individually controlled switching elements. The gas cutoff device according to claim 1, wherein the presence or absence of conduction is input to the control means via a switch circuit .
電磁弁と同等の抵抗値を有する擬似抵抗と、電圧検出回路を有し、電圧検出回路はスイッチ回路を介して弁駆動回路に接続され、スイッチ回路が電圧検出モードに切り換えられたとき、弁駆動回路の特定のスイッチング素子を駆動して前記疑似抵抗に通電されるように回路を構成し、疑似抵抗に通電した時の電池の電圧を前記電圧検出回路により検出するように構成した請求項１または２記載のガス遮断装置。
It has a pseudo resistance having the same resistance value as the solenoid valve and a voltage detection circuit. The voltage detection circuit is connected to the valve drive circuit via the switch circuit, and when the switch circuit is switched to the voltage detection mode, the valve drive by driving the particular switching elements of the circuit and the circuit to be energized to the pseudo resistance, claims the voltage of the battery when the current pseudo resistor configured to detect by the voltage detecting circuit 1, or 2. The gas shut-off device according to 2.
制御手段から閉弁信号と開弁信号が同時に出力された場合に、前記閉弁信号を優先する閉弁優先回路を有する請求項１〜３のいずれか１項に記載のガス遮断装置。
The gas shut-off device according to any one of claims 1 to 3, further comprising a valve closing priority circuit that prioritizes the valve closing signal when the valve closing signal and the valve opening signal are simultaneously output from the control means.
制御手段は、複数の弁閉信号を出力し、ＯＲ回路を介して弁駆動回路に出力することを特徴とする請求項１〜３のいずれか１項に記載のガス遮断装置。
The gas shut-off device according to any one of claims 1 to 3, wherein the control means outputs a plurality of valve closing signals and outputs them to the valve drive circuit via an OR circuit.
制御手段は、出力した複数の弁閉信号をそれぞれ入力する入力手段を有し、前記閉弁信号が正常かどうかを判定することを特徴とする請求項５記載のガス遮断装置。
6. The gas shut-off device according to claim 5, wherein the control means has input means for inputting the outputted plurality of valve closing signals, respectively, and determines whether or not the valve closing signals are normal.
制御手段は、複数の開弁信号を出力し、ＡＮＤ回路を介して弁駆動回路に出力することを特徴とする請求項１〜５のいずれか１項に記載のガス遮断装置。
The gas shut-off device according to any one of claims 1 to 5, wherein the control means outputs a plurality of valve opening signals and outputs them to the valve drive circuit via an AND circuit.
JP2003378277A2003-11-072003-11-07
Gas shut-off device
Expired - LifetimeJP4036181B2
(en)