JP2009145011A - Gas cut-off device, and gas cut-off system - Google Patents

Gas cut-off device, and gas cut-off system Download PDF

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JP2009145011A
JP2009145011A JP2007324590A JP2007324590A JP2009145011A JP 2009145011 A JP2009145011 A JP 2009145011A JP 2007324590 A JP2007324590 A JP 2007324590A JP 2007324590 A JP2007324590 A JP 2007324590A JP 2009145011 A JP2009145011 A JP 2009145011A
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gas
connection confirmation
confirmation signal
connection
leak alarm
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Riichi Sato
利一 佐藤
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Ricoh Elemex Corp
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Ricoh Elemex Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas cut-off device shortening a time to determine that the gas-cut off device and a gas leak alarm are properly connected, and allowing a user to easily know a determination result. <P>SOLUTION: A connection determining part 109a determines that the gas cut-off device 100 and the gas leak alarm 200 are properly connected when the number of times of reception of connection confirmation signals output rom a connection confirmation signal receiving part 106 is a predetermined number of times, that is, the same as the number of times of connection confirmation signals sent out from a connection confirmation signal sending part 104, five times, for example. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、ガス漏れ警報器が接続されるガス遮断装置、特に、ガス遮断装置にガス漏れ警報器が適切に接続されているか検知し、検知結果を表示できるガス遮断装置に関する。   The present invention relates to a gas shut-off device to which a gas leak alarm is connected, and more particularly to a gas shut-off device that can detect whether a gas leak alarm is properly connected to the gas shut-off device and display a detection result.

ガスの供給を遮断するガス遮断装置とガスの漏れを検知し警報するガス漏れ警報器からなるガス遮断システムが、例えば、特許文献１に開示されている。一般的に、ガス遮断装置とガス漏れ警報器とは、２本の信号線で接続され、この２本の信号線を介してガス遮断装置とガス漏れ警報器との間で信号の送受信を行っている。   For example, Patent Literature 1 discloses a gas shut-off system including a gas shut-off device that shuts off gas supply and a gas leak alarm that detects and warns of gas leak. In general, the gas shut-off device and the gas leak alarm are connected by two signal lines, and signals are transmitted and received between the gas shut-off device and the gas leak alarm through these two signal lines. ing.

ところで、ガス遮断装置とガス漏れ警報器とが適切に接続されていないと、万一のガス漏れ事故の際に警報器が動作せず非常に危険であることから、ガス遮断装置は、常に、所定時間間隔でガス漏れ警報器に確認信号を送出し、送出した確認信号が信号線を介して当該ガス遮断装置に戻ってきた場合には、ガス遮断装置とガス漏れ警報器とが適切に接続されていると判定し、確認している。
特開２００１−１８３２０７号公報 By the way, if the gas shut-off device and the gas leak alarm device are not properly connected, the alarm device will not operate in the event of a gas leak accident, so it is very dangerous. When a confirmation signal is sent to the gas leak alarm at predetermined time intervals and the sent confirmation signal returns to the gas shut-off device via the signal line, the gas shut-off device and the gas leak alarm are properly connected. It is determined and confirmed.
JP 2001-183207 A

しかし、前記確認信号を送出する間隔は、従来から約１分程度であるため、例えば、ガス遮断装置が前記確認信号を３回送出し、ガス漏れ警報器が、前記ガス遮断装置が３回送出した確認信号を全て受信すると、ガス遮断装置とガス漏れ警報器とが適切に接続されていると判定する場合には、判定のために、最低３分間を要していた。これは、確認信号を所定回数送出して判定することにより誤判定を避けるためである。   However, since the interval for sending the confirmation signal is about 1 minute from the past, for example, the gas shut-off device sends the confirmation signal three times, and the gas leak alarm device sends the gas shut-off device three times. When all the confirmation signals are received, it takes at least 3 minutes for the determination when it is determined that the gas shut-off device and the gas leak alarm are properly connected. This is to avoid erroneous determination by sending a confirmation signal a predetermined number of times for determination.

また、ガス遮断装置は、常に、ガス遮断装置とガス漏れ警報器との接続確認を行うので、ガス遮断装置には、判定結果を表示する表示部が設けられていなかった。そのため、定期点検の際に、ガス漏れ警報器を交換する場合など、新たにガス漏れ警報器をガス遮断装置に接続する場合の接続判定においても、前述のような判定確認処理を実行するので、判定のために最低３分間を要していた。   In addition, since the gas shut-off device always confirms the connection between the gas shut-off device and the gas leak alarm, the gas shut-off device is not provided with a display unit for displaying the determination result. Therefore, in the case of a connection check when newly connecting a gas leak alarm device to a gas shutoff device, such as when replacing a gas leak alarm device during a periodic inspection, the determination confirmation process as described above is executed. It took at least 3 minutes for the judgment.

また、判定結果を表示する表示部が設けられていなかったため、接続状態を検知するためには、動作テストを実施するか、又は、専用の通信機器をガス遮断装置に接続して判定結果を読み出す必要があり、判定結果を容易に知ることができないという問題があった。   Moreover, since the display part which displays a determination result was not provided, in order to detect a connection state, an operation test is implemented or a dedicated communication apparatus is connected to a gas cutoff device and a determination result is read. There is a problem that the determination result cannot be easily known.

本発明は、かかる実情に鑑みてなされたものであり、ガス遮断装置とガス漏れ警報器とが適切に接続されていると判定する時間を短縮し、さらに、判定結果を容易に知ることができるガス遮断装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and can shorten the time for determining that the gas shut-off device and the gas leak alarm are properly connected, and can easily know the determination result. It aims at providing a gas shut-off device.

第１の技術手段は、信号線を介して接続されるガス漏れ警報器に対して常時所定時間間隔で、接続確認信号を送出し、応答信号を確認して前記ガス漏れ警報器が接続されていることを確認するガス遮断装置において、任意に前記ガス漏れ警報器の接続確認を指示する操作子と、前記ガス漏れ警報器との接続状態を表示する表示部を備え、前記操作子が操作された場合、前記接続確認信号を、前記所定時間間隔よりも短い時間間隔で、所定回数送出すると共に、前記接続確認信号の応答信号を確認し、当該応答信号の確認により前記表示部がガス漏れ警報器の接続状態を表示することを特徴とするガス遮断装置である。   The first technical means sends a connection confirmation signal to a gas leak alarm connected via a signal line at a predetermined time interval, confirms a response signal, and connects the gas leak alarm. In the gas shut-off device for confirming that the gas leakage alarm device is provided, an operation element for arbitrarily instructing connection confirmation of the gas leak alarm device and a display unit for displaying a connection state of the gas leak alarm device are provided, and the operation element is operated. The connection confirmation signal is transmitted a predetermined number of times at a time interval shorter than the predetermined time interval, the response signal of the connection confirmation signal is confirmed, and the display unit displays a gas leak alarm by confirming the response signal. It is a gas shut-off device characterized by displaying the connection state of the vessel.

第２の技術手段は、第１の技術手段において、前記操作子が操作されて接続確認信号が送出された後、応答信号が確認できないときは、誤接続確認信号を所定時間間隔で、所定回数送出すると共に、前記誤接続確認信号の応答信号を確認し、当該応答信号を確認したときは誤接続と判定し、確認できないときは接続不良と判定することを特徴とする。   In a second technical means, in the first technical means, when a response confirmation signal cannot be confirmed after the operation element is operated and a connection confirmation signal is transmitted, an erroneous connection confirmation signal is transmitted at a predetermined time interval at a predetermined number of times. The response signal of the erroneous connection confirmation signal is confirmed, and when the response signal is confirmed, it is determined that the connection is incorrect, and when the response signal cannot be confirmed, it is determined that the connection is defective.

第３の技術手段は、第１又は第２の技術手段のガス遮断装置と、前記ガス遮断装置に信号線を介して接続するガス漏れ警報器とから構成されることを特徴とするガス遮断システムである。   A third technical means comprises the gas shut-off device of the first or second technical means and a gas leak alarm connected to the gas shut-off device via a signal line. It is.

本発明により、ガス遮断装置とガス漏れ警報器とが適切に接続されているか否かを判定する時間を短縮し、さらに、判定結果を容易に知ることができるため、ガス遮断装置の管理者の利便性が向上するのみならず、高度な安全性を確保することができる。   According to the present invention, it is possible to shorten the time for determining whether or not the gas shut-off device and the gas leak alarm are properly connected, and to easily know the determination result. Not only is convenience improved, but a high level of safety can be ensured.

図１は、本発明に係わるガス供給を遮断する機能を有するガス遮断装置１００、及び、当該ガス遮断装置１００に接続され、供給されるガスの漏れを検知して警報するガス漏れ警報器２００のブロック図である。ガス遮断装置１００とガス漏れ警報器２００とは、後述する信号線Ｌ１、Ｌ２を介して接続され、ガス遮断装置１００とガス漏れ警報器２００とからガス遮断システムが構成される。   FIG. 1 shows a gas shut-off device 100 having a function of shutting off gas supply according to the present invention, and a gas leak alarm device 200 connected to the gas shut-off device 100 for detecting and alarming a leak of supplied gas. It is a block diagram. The gas shut-off device 100 and the gas leak alarm device 200 are connected via signal lines L1 and L2, which will be described later, and the gas shut-off device 100 and the gas leak alarm device 200 constitute a gas shut-off system.

（ガス遮断装置１００）
１０１は、ガス遮断部で、各機能ブロックの制御を行う制御部１０９の制御を受け、ガス供給を遮断する遮断弁（図示しない）の開閉制御を行う。なお、ガス遮断弁は、ガス供給路に設けられ、当該ガス供給路は、ガス遮断装置１００の内部にあっても、ガス遮断装置１００の外部にあってもよい。 (Gas shutoff device 100)
Reference numeral 101 denotes a gas shut-off unit, which is controlled by a control unit 109 that controls each functional block, and performs open / close control of a shut-off valve (not shown) that shuts off gas supply. The gas cutoff valve is provided in the gas supply path, and the gas supply path may be inside the gas cutoff device 100 or outside the gas cutoff device 100.

１０２は、前記遮断弁を開栓するスイッチである復帰ボタンや、ガス遮断装置１００を操作するボタン等から構成される操作部で、１０３は、ガス遮断装置１００の状態などを表示する表示部である。   Reference numeral 102 denotes an operation unit including a return button that is a switch for opening the shut-off valve, a button for operating the gas shut-off device 100, and the like. 103 denotes a display unit that displays the state of the gas shut-off device 100 and the like. is there.

１０４は、ガス遮断装置１００とガス漏れ警報器２００が適切に接続しているか否かを判定するための接続確認信号を、信号線Ｌ１を介して、ガス漏れ警報器２００の接続部に送出する接続確認信号送出部である。   104 sends a connection confirmation signal for determining whether or not the gas shut-off device 100 and the gas leak alarm device 200 are properly connected to the connection portion of the gas leak alarm device 200 via the signal line L1. It is a connection confirmation signal transmission part.

１０５は、ガス漏れ警報器２００との接続インターフェイスを提供する接続部である。接続部１０５は、当該接続部１０５のプラス（＋）端子に接続される信号線Ｌ２、同マイナス（−）端子に接続される信号線Ｌ１を備え、当該信号線Ｌ１、Ｌ２を介して、ガス漏れ警報器２００の接続部と接続される。
１０６は、接続確認信号の応答信号、つまり、接続確認信号送出部１０４が送出した接続確認信号を受信する接続確認信号受信部で、単位時間あたりの当該接続確認信号の受信回数を制御部１０９に出力する。
なお、接続確認信号送出部１０４、接続確認信号受信部１０６の詳細な説明については後述する。 A connection unit 105 provides a connection interface with the gas leak alarm device 200. The connection unit 105 includes a signal line L2 connected to the plus (+) terminal of the connection unit 105 and a signal line L1 connected to the minus (−) terminal, and gas is supplied via the signal lines L1 and L2. It is connected to the connection part of the leak alarm device 200.
A connection confirmation signal receiving unit 106 receives a connection confirmation signal response signal, that is, a connection confirmation signal sent from the connection confirmation signal sending unit 104. The control unit 109 sets the number of times the connection confirmation signal is received per unit time. Output.
Details of the connection confirmation signal sending unit 104 and the connection confirmation signal receiving unit 106 will be described later.

１０７は、ガス遮断装置１００とガス漏れ警報器２００が誤って接続しているか否かを判定するための誤接続確認信号を、信号線Ｌ２を介して、ガス漏れ警報器２００の接続部に送出する誤接続確認信号送出部である。
１０８は、誤接続確認信号の応答信号、つまり、誤接続確認信号送出部１０７が送出した誤接続確認信号を受信する誤接続確認信号受信部で、単位時間あたりの当該誤接続確認信号の受信回数を制御部１０９に出力する。
なお、誤接続確認信号送出部１０７、誤接続確認信号受信部１０８の詳細な説明については後述する。 107 sends an erroneous connection confirmation signal for determining whether or not the gas shut-off device 100 and the gas leak alarm device 200 are erroneously connected to the connection portion of the gas leak alarm device 200 via the signal line L2. This is an erroneous connection confirmation signal sending unit.
Reference numeral 108 denotes an erroneous connection confirmation signal receiving unit that receives an erroneous connection confirmation signal response signal, that is, an erroneous connection confirmation signal transmitted by the erroneous connection confirmation signal transmission unit 107. The number of receptions of the erroneous connection confirmation signal per unit time. Is output to the control unit 109.
Details of the erroneous connection confirmation signal sending unit 107 and the erroneous connection confirmation signal receiving unit 108 will be described later.

制御部１０９は、接続確認信号受信部１０６が出力した単位時間あたりの当該接続確認信号の受信回数、誤接続確認信号受信部１０８が出力した単位時間あたりの当該誤接続確認信号の受信回数を基にガス遮断装置１００とガス漏れ警報器２００が適切に接続しているか否かを判定する接続判定部１０９ａを有する。接続判定処理の詳細については後述する。
なお、Ｂ（点線）は、バスである。 The control unit 109 is based on the number of receptions of the connection confirmation signal per unit time output by the connection confirmation signal reception unit 106 and the number of receptions of the erroneous connection confirmation signal per unit time output by the erroneous connection confirmation signal reception unit 108. In addition, a connection determination unit 109a that determines whether or not the gas shut-off device 100 and the gas leak alarm 200 are properly connected is provided. Details of the connection determination process will be described later.
B (dotted line) is a bus.

（ガス漏れ警報器２００）
２０１は、ガス漏れを検知するガス漏れ検知部である。ガス漏れ検知部２０１は、ガス漏れを検知し、当該検知したガス漏れが所定時間以上続くと、ガス遮断装置１００のガス遮断部１０１にガス漏れ検知信号を送出する。前記ガス漏れ検知信号を受信したガス遮断部１０１は、ガス供給を遮断する遮断弁を閉じる。同様に、前記検知信号を警報部２０２に出力する。 (Gas leak alarm 200)
Reference numeral 201 denotes a gas leak detection unit that detects a gas leak. The gas leak detection unit 201 detects a gas leak. When the detected gas leak continues for a predetermined time or longer, the gas leak detection unit 201 sends a gas leak detection signal to the gas cutoff unit 101 of the gas cutoff device 100. The gas shut-off unit 101 that has received the gas leak detection signal closes the shut-off valve that shuts off the gas supply. Similarly, the detection signal is output to the alarm unit 202.

警報部２０２は、ガス漏れ検知部２０１が出力したガス漏れ検知信号を受信すると、ガスが漏れたことをビープ音、音声などにより警報する。また、図示しないＬＥＤや表示部を介して、ガスが漏れたことを報知する。   When the alarm unit 202 receives the gas leak detection signal output from the gas leak detection unit 201, the alarm unit 202 warns that the gas has leaked by a beep sound or a voice. Further, it is notified that gas has leaked through an LED or a display unit (not shown).

２０３は、ガス遮断装置１００との接続インターフェイスを提供する接続部である。接続部２０３は、当該接続部２０３のプラス（＋）端子に接続される信号線Ｌ２、同マイナス（−）端子に接続される信号線Ｌ１を備え、当該信号線Ｌ１、Ｌ２を介して、ガス遮断装置１００の接続部と接続される。
２０４は、各機能ブロックを制御する制御部である。 A connection unit 203 provides a connection interface with the gas cutoff device 100. The connection unit 203 includes a signal line L2 connected to the plus (+) terminal of the connection unit 203 and a signal line L1 connected to the minus (−) terminal, and the gas is passed through the signal lines L1 and L2. It connects with the connection part of the interruption | blocking apparatus 100. FIG.
A control unit 204 controls each functional block.

ＰＣ１は、ダイオードであり、当該ダイオードＰＣ１によって、矢印Ｃ方向しか信号は流れない。ＰＣ２は、フォトトランジスタである。なお、Ｂ（点線）は、バスである。   PC1 is a diode, and a signal flows only in the direction of arrow C by the diode PC1. PC2 is a phototransistor. B (dotted line) is a bus.

図２〜図４を用いて、ガス遮断装置１００とガス漏れ警報器２００とが適切に接続されているか否かを判定する接続判定処理、及び、誤接続判定処理について説明する。
（接続判定処理）
図２は、接続確認信号送出部１０４が送出する接続確認信号のタイミングチャートである。
接続確認信号送出部１０４が、所定の間隔、例えば、１分間隔で、常時、接続確認信号を送出している場合において、ガス遮断装置１００の管理者が、任意にガス漏れ警報器２００の接続確認を指示する操作子、例えば、操作部１０２の復帰ボタンを操作すると、当該復帰ボタンの操作を検出した制御部１０９は、接続確認信号送出部１０４に、前記所定の時間間隔よりも短い時間間隔で、接続確認信号を送出するように指示する。 A connection determination process and an erroneous connection determination process for determining whether or not the gas cutoff device 100 and the gas leak alarm device 200 are properly connected will be described with reference to FIGS.
(Connection determination processing)
FIG. 2 is a timing chart of the connection confirmation signal transmitted from the connection confirmation signal transmission unit 104.
In the case where the connection confirmation signal sending unit 104 always sends out a connection confirmation signal at a predetermined interval, for example, at an interval of 1 minute, the administrator of the gas shut-off device 100 arbitrarily connects the gas leak alarm device 200. When an operator for instructing confirmation, for example, when a return button of the operation unit 102 is operated, the control unit 109 that has detected the operation of the return button causes the connection confirmation signal sending unit 104 to send a time interval shorter than the predetermined time interval. Instructs to send a connection confirmation signal.

この場合において、前記指示を受けた接続確認信号送出部１０４は、接続確認信号を、所定の方向（矢印Ｃ）から、前記短い時間間隔、例えば１秒間隔で、所定回数、ガス漏れ警報器２００の接続部に送出する。図２のタイミングチャートでは、接続確認信号送出部１０４は、１秒間隔で、５回、接続確認信号を送出する。
送出された接続確認信号は、矢印Ｃで示した経路を経由し、接続確認信号受信部１０６によって受信される。 In this case, the connection confirmation signal sending unit 104 that has received the instruction sends the connection confirmation signal from the predetermined direction (arrow C) a predetermined number of times at the short time interval, for example, one second, for a predetermined number of times. To the connection. In the timing chart of FIG. 2, the connection confirmation signal transmission unit 104 transmits the connection confirmation signal five times at 1-second intervals.
The transmitted connection confirmation signal is received by the connection confirmation signal receiving unit 106 via the path indicated by the arrow C.

また、制御部１０９は、接続確認信号送出部１０４に前記接続確認信号を送出するように指示すると同時に、接続確認信号受信部１０６に接続確認信号を受信する受信状態に移行するように指示する。
接続確認信号受信部１０６は、前記受信状態に移行後、接続確認信号の受信回数を計測し、計測した受信回数を制御部１０９の接続判定部１０９ａに出力する。 Further, the control unit 109 instructs the connection confirmation signal transmission unit 104 to transmit the connection confirmation signal, and simultaneously instructs the connection confirmation signal reception unit 106 to shift to a reception state in which the connection confirmation signal is received.
The connection confirmation signal receiving unit 106 measures the number of receptions of the connection confirmation signal after shifting to the reception state, and outputs the measured number of receptions to the connection determination unit 109 a of the control unit 109.

接続判定部１０９ａは、接続確認信号受信部１０６が出力した接続確認信号の受信回数が、所定の回数、つまり、接続確認信号送出部１０４が送出した接続確認信号と同じ回数、例えば、５回の場合には、ガス遮断装置１００とガス漏れ警報器２００が適切に接続していると判定する（応答信号の確認）。前記所定の回数未満（応答信号が確認できないとき）の場合には、後述のように、ガス遮断装置１００とガス漏れ警報器２００が適切に接続していない、すなわち、誤接続であると判定する。   The connection determination unit 109a receives the connection confirmation signal output from the connection confirmation signal reception unit 106 a predetermined number of times, that is, the same number as the connection confirmation signal transmitted from the connection confirmation signal transmission unit 104, for example, five times. In this case, it is determined that the gas cutoff device 100 and the gas leak alarm device 200 are properly connected (confirmation of response signal). In the case of less than the predetermined number of times (when the response signal cannot be confirmed), as will be described later, it is determined that the gas shut-off device 100 and the gas leak alarm device 200 are not properly connected, that is, are erroneously connected. .

そして、判定結果を、表示部１０３に出力する。前記判定結果を受信した表示部１０３は、図１で示したガス遮断装置１００とガス漏れ警報器２００が適切に接続している場合には、表示部１０３の液晶パネルに“接続ＯＫ”と表示したり、青色ＬＥＤを点灯する等して、適切に接続していることを表示する。このように、応答信号の確認により、表示部１０３にガス漏れ警報器２００の接続状態が表示される。   Then, the determination result is output to the display unit 103. The display unit 103 that has received the determination result displays “connection OK” on the liquid crystal panel of the display unit 103 when the gas shut-off device 100 and the gas leak alarm 200 shown in FIG. Or turn on the blue LED to indicate that the connection is appropriate. Thus, the connection state of the gas leak alarm device 200 is displayed on the display unit 103 by checking the response signal.

また、ガス遮断装置１００とガス漏れ警報器２００が適切に接続していない場合、例えば、図３に示すようにガス遮断装置１００に対して、ガス漏れ警報器２００が逆に接続されている場合には、前記液晶パネルに“逆接続”と表示したり、黄色ＬＥＤを点灯する等して、適切に接続していないことを表示する。   Moreover, when the gas shut-off device 100 and the gas leak alarm device 200 are not properly connected, for example, when the gas leak alarm device 200 is reversely connected to the gas shut-off device 100 as shown in FIG. Displays “reverse connection” on the liquid crystal panel or lights up a yellow LED to indicate that the connection is not appropriate.

図４は、ガス遮断装置３００（１００）の外観図であり、例えば、当該装置３００の前面に、液晶パネル３０１及びＬＥＤ３０２（表示部１０３）、復帰ボタン３０３（操作部１０２）が配設され、前述した、ガス遮断装置１００とガス漏れ警報器２００との接続状態を液晶パネル３０１、ＬＥＤ３０２を介して、管理者に表示する。   FIG. 4 is an external view of the gas cutoff device 300 (100). For example, a liquid crystal panel 301, an LED 302 (display unit 103), and a return button 303 (operation unit 102) are disposed on the front surface of the device 300. The connection state between the gas shut-off device 100 and the gas leak alarm device 200 described above is displayed to the administrator via the liquid crystal panel 301 and the LED 302.

以後、接続確認信号送出部１０４は、接続確認信号を前記所定の時間間隔（１分間隔）でガス漏れ警報器２００の接続部に送出する（図２参照）。   Thereafter, the connection confirmation signal sending unit 104 sends the connection confirmation signal to the connection part of the gas leak alarm 200 at the predetermined time interval (1 minute interval) (see FIG. 2).

（誤接続判定処理）
図３に示したように、ガス遮断装置１００に対して、ガス漏れ警報器２００が逆に接続されている場合には、図１に示した場合とは異なり、ダイオードＰＣ１の整流作用によって、矢印Ｃ方向ではなく矢印Ｗ方向にしか信号は流れない。このような場合に実行される誤接続判定処理について説明する。 (Incorrect connection determination processing)
As shown in FIG. 3, when the gas leakage alarm device 200 is connected to the gas shut-off device 100 in the reverse direction, unlike the case shown in FIG. Signals flow only in the direction of arrow W, not in the C direction. The erroneous connection determination process executed in such a case will be described.

前述した接続判定処理において誤接続と判定された後、制御部１０９は、誤接続確認信号送出部１０７に前記誤接続確認信号を送出するように指示する。   After it is determined that there is an erroneous connection in the connection determination process described above, the control unit 109 instructs the erroneous connection confirmation signal transmission unit 107 to transmit the erroneous connection confirmation signal.

前記指示を受けた誤接続確認信号送出部１０７は、前記所定の方向（矢印Ｃ）とは逆の方向（矢印Ｗ）から、誤接続確認信号を前記所定の時間間隔よりも短い時間間隔、例えば１秒間隔で５回ガス漏れ警報器２００の接続部に送出する。
送出された誤接続確認信号は、矢印Ｗで示した経路を経由し、誤接続確認信号受信部１０８によって受信される。 Upon receiving the instruction, the erroneous connection confirmation signal sending unit 107 sends an erroneous connection confirmation signal from a direction (arrow W) opposite to the predetermined direction (arrow C), for example, at a time interval shorter than the predetermined time interval, for example, It is sent to the connection part of the gas leak alarm 200 five times at 1 second intervals.
The transmitted erroneous connection confirmation signal is received by the erroneous connection confirmation signal receiving unit 108 via the path indicated by the arrow W.

また、制御部１０９は、誤接続確認信号送出部１０７に誤接続確認信号を送出するように指示すると同時に、誤接続確認信号受信部１０８に誤接続確認信号を受信する受信状態に移行するように指示する。
誤接続確認信号受信部１０８は、前記受信状態に移行後、誤接続確認信号の受信回数を計測し、計測した受信回数を制御部１０９の接続判定部１０９ａに出力する。 In addition, the control unit 109 instructs the erroneous connection confirmation signal sending unit 107 to send an erroneous connection confirmation signal, and at the same time, shifts to a reception state in which the erroneous connection confirmation signal receiving unit 108 receives the erroneous connection confirmation signal. Instruct.
After shifting to the reception state, the erroneous connection confirmation signal receiving unit 108 measures the number of receptions of the erroneous connection confirmation signal, and outputs the measured number of receptions to the connection determination unit 109a of the control unit 109.

接続判定部１０９ａは、誤接続確認信号受信部１０８が出力した誤接続確認信号の受信回数が、所定の回数、誤接続確認信号送出部１０７が送出した誤接続確認信号と同じ回数、例えば、５回の場合には、ガス遮断装置１００とガス漏れ警報器２００が誤接続と判定する（応答信号の確認）。そして、判定結果を表示部１０３に出力する。   The connection determination unit 109a receives the erroneous connection confirmation signal output from the erroneous connection confirmation signal reception unit 108 a predetermined number of times, the same number of times as the erroneous connection confirmation signal transmitted from the erroneous connection confirmation signal transmission unit 107, for example, 5 In the case of the rotation, the gas shut-off device 100 and the gas leak alarm 200 are determined to be erroneously connected (confirmation of response signal). Then, the determination result is output to the display unit 103.

一方、誤接続確認信号受信部１０８が出力した誤接続確認信号の受信回数が、前記所定の回数未満（応答信号が確認できないとき）の場合には、ガス遮断装置１００とガス漏れ警報器２００が、信号線Ｌ１、Ｌ２の断線などを原因とする接続不良状態にあると判定し、当該判定結果を表示部１０３に表示する。
具体的には、図４に示した、液晶パネル３０１に“接続不良”と表示したり、赤色ＬＥＤを点灯する。 On the other hand, when the number of receptions of the erroneous connection confirmation signal output by the erroneous connection confirmation signal receiving unit 108 is less than the predetermined number (when the response signal cannot be confirmed), the gas cutoff device 100 and the gas leak alarm device 200 are Then, it is determined that the connection is poor due to the disconnection of the signal lines L1 and L2, and the determination result is displayed on the display unit 103.
Specifically, “not connected” is displayed on the liquid crystal panel 301 shown in FIG. 4, or the red LED is turned on.

このように、接続判定処理において誤接続と判定された後、誤接続判定処理を実行することで、より確実な接続結果情報を得ることができる。   Thus, more reliable connection result information can be obtained by executing the erroneous connection determination process after it is determined that the connection is determined to be incorrect in the connection determination process.

ガス遮断装置、警報器のブロック図である。It is a block diagram of a gas shut-off device and an alarm device. 接続確認信号送出部が送出する接続確認信号のタイミングチャートである。It is a timing chart of the connection confirmation signal which a connection confirmation signal transmission part sends out. ガス遮断装置に警報器が誤接続されている状態を示すブロック図である。It is a block diagram which shows the state in which the alarm device is misconnected to the gas shut-off device. ガス遮断装置の外観図である。It is an external view of a gas cutoff device.

符号の説明Explanation of symbols

１００…ガス遮断装置、１０１…ガス遮断部、１０２…操作部、１０３…表示部、１０４…接続確認信号送出部、１０５…接続部、１０６…接続確認信号受信部、１０７…誤接続確認信号送出部、１０８…誤接続確認信号受信部、１０９…制御部、１０９ａ…接続判定部、２００…ガス漏れ警報器、２０１…ガス漏れ検知部、２０２…警報部、２０３…接続部、３００…ガス遮断装置、３０１…液晶パネル、３０２…ＬＥＤ、３０３…復帰ボタン、Ｌ１、Ｌ２…信号線、ＰＣ１…ダイオード、ＰＣ２…フォトトランジスタ。 DESCRIPTION OF SYMBOLS 100 ... Gas interruption | blocking apparatus, 101 ... Gas interruption | blocking part, 102 ... Operation part, 103 ... Display part, 104 ... Connection confirmation signal sending part, 105 ... Connection part, 106 ... Connection confirmation signal receiving part, 107 ... Misconnection confirmation signal sending , 108 ... erroneous connection confirmation signal receiving part, 109 ... control part, 109a ... connection determination part, 200 ... gas leak alarm, 201 ... gas leak detection part, 202 ... alarm part, 203 ... connection part, 300 ... gas cutoff Device: 301 ... Liquid crystal panel, 302 ... LED, 303 ... Return button, L1, L2 ... Signal line, PC1 ... Diode, PC2 ... Phototransistor.

Claims (3)

信号線を介して接続されるガス漏れ警報器に対して常時所定時間間隔で、接続確認信号を送出し、応答信号を確認して前記ガス漏れ警報器が接続されていることを確認するガス遮断装置において、
任意に前記ガス漏れ警報器の接続確認を指示する操作子と、前記ガス漏れ警報器との接続状態を表示する表示部を備え、
前記操作子が操作された場合、前記接続確認信号を、前記所定時間間隔よりも短い時間間隔で、所定回数送出すると共に、前記接続確認信号の応答信号を確認し、当該応答信号の確認により前記表示部がガス漏れ警報器の接続状態を表示することを特徴とするガス遮断装置。 A gas shut-off that confirms that the gas leak alarm is connected by sending a connection confirmation signal to the gas leak alarm connected via the signal line at regular time intervals and confirming the response signal. In the device
Optionally, an operator for instructing connection confirmation of the gas leak alarm device, and a display unit for displaying a connection state of the gas leak alarm device,
When the operation element is operated, the connection confirmation signal is transmitted a predetermined number of times at a time interval shorter than the predetermined time interval, the response signal of the connection confirmation signal is confirmed, and the response signal is confirmed to confirm the response signal. A gas shut-off device, wherein the display unit displays a connection state of the gas leak alarm. 前記操作子が操作されて接続確認信号が送出された後、応答信号が確認できないときは、誤接続確認信号を所定時間間隔で、所定回数送出すると共に、前記誤接続確認信号の応答信号を確認し、当該応答信号を確認したときは誤接続と判定し、確認できないときは接続不良と判定することを特徴とするガス遮断装置。   When the response signal cannot be confirmed after the operation element is operated and the connection confirmation signal is transmitted, the erroneous connection confirmation signal is transmitted a predetermined number of times at predetermined time intervals and the response signal of the erroneous connection confirmation signal is confirmed. When the response signal is confirmed, it is determined as an erroneous connection, and when the response signal cannot be confirmed, it is determined as a connection failure. 請求項１又は２に記載のガス遮断装置と、前記ガス遮断装置に信号線を介して接続するガス漏れ警報器とから構成されることを特徴とするガス遮断システム。   3. A gas shut-off system comprising the gas shut-off device according to claim 1 and a gas leak alarm connected to the gas shut-off device via a signal line.
JP2007324590A 2007-12-17 2007-12-17 Gas cut-off device, and gas cut-off system Pending JP2009145011A (en)

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Publication number Priority date Publication date Assignee Title
WO2011099184A1 (en) * 2010-02-09 2011-08-18 三菱重工業株式会社 Reliquefaction device mounted on liquefied gas carrying ship
JP2013019831A (en) * 2011-07-13 2013-01-31 Yazaki Energy System Corp Gas meter and connection determination method thereof
CN112330928A (en) * 2020-11-04 2021-02-05 郑州创源智能设备有限公司 Information processing method and system of gas meter linkage alarm and storage medium

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JPH06274775A (en) * 1993-03-23 1994-09-30 Yazaki Corp Gas alarm cut-off system

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Publication number Priority date Publication date Assignee Title
JPH06274775A (en) * 1993-03-23 1994-09-30 Yazaki Corp Gas alarm cut-off system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011099184A1 (en) * 2010-02-09 2011-08-18 三菱重工業株式会社 Reliquefaction device mounted on liquefied gas carrying ship
JP2011162038A (en) * 2010-02-09 2011-08-25 Mitsubishi Heavy Ind Ltd Reliquefying device mounted on liquefied gas carrying vessel
CN102224066A (en) * 2010-02-09 2011-10-19 三菱重工业株式会社 Reliquefaction device mounted on liquefied gas carrying ship
CN102224066B (en) * 2010-02-09 2014-03-19 三菱重工业株式会社 Reliquefaction device mounted on liquefied gas carrying ship
JP2013019831A (en) * 2011-07-13 2013-01-31 Yazaki Energy System Corp Gas meter and connection determination method thereof
CN112330928A (en) * 2020-11-04 2021-02-05 郑州创源智能设备有限公司 Information processing method and system of gas meter linkage alarm and storage medium
CN112330928B (en) * 2020-11-04 2021-06-29 郑州创源智能设备有限公司 Information processing method and system of gas meter linkage alarm and storage medium

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