JPH10124775A - Gas leak alarm - Google Patents

Gas leak alarm

Info

Publication number
JPH10124775A
JPH10124775A JP29452696A JP29452696A JPH10124775A JP H10124775 A JPH10124775 A JP H10124775A JP 29452696 A JP29452696 A JP 29452696A JP 29452696 A JP29452696 A JP 29452696A JP H10124775 A JPH10124775 A JP H10124775A
Authority
JP
Japan
Prior art keywords
gas meter
alarm
type
type gas
alarm device
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.)
Granted
Application number
JP29452696A
Other languages
Japanese (ja)
Other versions
JP3678380B2 (en
Inventor
Yasuharu Niwa
泰晴 丹羽
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.)
Ricoh Elemex Corp
Original Assignee
Ricoh Elemex Corp
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 Ricoh Elemex Corp filed Critical Ricoh Elemex Corp
Priority to JP29452696A priority Critical patent/JP3678380B2/en
Publication of JPH10124775A publication Critical patent/JPH10124775A/en
Application granted granted Critical
Publication of JP3678380B2 publication Critical patent/JP3678380B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Emergency Alarm Devices (AREA)
  • Alarm Systems (AREA)

Abstract

PROBLEM TO BE SOLVED: To reduce the cost for a portion of a changeover switch, and to eliminate the adverse influence that the switching operation is erroneously performed or left behind by ennecessitating the changeover switch thereby eliminating the troublesome operation of the changeover switch. SOLUTION: An S-type gas meter periodically outputs a power source answer request signal which is not outputted by a G-type gas meter. Then, an alarm 11 is set to the G-type gas meter countermeasure at first, and a CPU 12 of an alarm 11 is provided with a function for setting it as it is when the power source request signal from a gas meter 10 side is not detected at the prescribed number of times, and automatically switching it to the S-type gas meter countermeasure when the power source answer request signal is detected at the prescribed number of times.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、マイコン式ガス
メータに警報器を接続し、ガス漏れを検知したときその
警報器でガス漏れ警報を発するガス漏れ警報装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas leak alarm device in which an alarm device is connected to a microcomputer type gas meter and when a gas leak is detected, the alarm device issues a gas leak alarm.

【0002】[0002]

【従来の技術】従来、たとえば一般家庭では、通常、マ
イコン式ガスメータとして、G型マイコン式ガスメータ
(G型ガスメータ)を設置するのが一般的であった。
2. Description of the Related Art Conventionally, for example, in general households, a G-type microcomputer gas meter (G-type gas meter) is generally installed as a microcomputer-type gas meter.

【0003】ところが、最近、このG型ガスメータにな
い幾つかの安全確認機能をもった新型のマイコン式ガス
メータとして、所謂S型ガスメータが普及し始め、その
ため、そのS型ガスメータに警報器を接続して使用する
一般家庭も増えている。
However, recently, a so-called S-type gas meter has begun to spread as a new type of microcomputer-type gas meter having several safety confirmation functions which are not present in the G-type gas meter. Therefore, an alarm device is connected to the S-type gas meter. The number of ordinary households that use mobile phones is increasing.

【0004】したがって、現在では、マイコン式ガスメ
ータとして、そのような新旧2種類のものが混在して一
般家庭などに設置され、そのため、従来のガス漏れ警報
装置では、警報器を接続するガスメータの種類に適応し
て作動できるように警報器に作動切換機能をもたせる必
要があった。
Therefore, at present, such two types of microcomputer type gas meters are installed in general households and the like in a mixed manner. Therefore, in a conventional gas leak alarm device, the type of gas meter to which an alarm is connected is provided. It was necessary to provide an alarm switch with an operation switching function so that the alarm could be operated in a suitable manner.

【0005】そこで、従来のガス漏れ警報装置では、た
とえば図4に概略的に示すとおり、ガスメータ1に接続
して使用する警報器2のCPU3に切換スイッチ4を接
続して設け、ガスメータ1がS型ガスメータの場合に、
切換スイッチ4を手動操作して接点4aに接触させ、当
初のG型ガスメータ対応からS型ガスメータ対応に切り
換えるようにしていた。
Therefore, in a conventional gas leak alarm device, as schematically shown in FIG. 4, for example, a changeover switch 4 is connected to a CPU 3 of an alarm device 2 connected to a gas meter 1 for use. Type gas meter,
The changeover switch 4 was manually operated to come into contact with the contact 4a, so that switching from the initial G-type gas meter to the S-type gas meter was performed.

【0006】[0006]

【発明が解決しようとする課題】ところが、従来では、
たとえば一般家庭に設置したマイコン式ガスメータ1が
古いG型か或いは新しいS型か否かを一戸ごとにいちい
ち確認してから、切換スイッチ4を手動で操作する必要
があるため、面倒であり、場合によっては切換操作を間
違ったり、忘れたりするおそれがある。また、そもそも
切換スイッチ4を必要とする分だけコストアップとなる
という課題があった。
However, in the prior art,
For example, it is necessary to manually operate the changeover switch 4 after each microcomputer checks whether the microcomputer type gas meter 1 installed in a general home is an old G type or a new S type, which is troublesome. In some cases, the switching operation may be wrong or forgotten. In addition, there is a problem that the cost is increased by the need for the changeover switch 4 in the first place.

【0007】[0007]

【課題を解決するための手段】そのため、請求項1に記
載の発明は、たとえば以下の図示実施の形態に示すとお
り、マイコン式ガスメータ10に警報器11を接続し、
ガス漏れを検知したときその警報器11でガス漏れ警報
を発するガス漏れ警報装置において、前記警報器11を
ガスメータ10に接続したとき、そのガスメータ10か
らの電源アンサ要求信号を所定回数検出しなければ、前
記警報器11を当初設定したG型ガスメータ対応のまま
とし、電源アンサ要求信号を所定回数検出したならば前
記警報器11をS型ガスメータ対応に切り換えるCPU
12のような制御手段を、前記警報器11に備えてな
る、ことを特徴とする。
Therefore, according to the first aspect of the present invention, an alarm device 11 is connected to a microcomputer type gas meter 10 as shown in the following embodiments, for example.
In a gas leak alarm device that issues a gas leak alarm with the alarm device 11 when a gas leak is detected, when the alarm device 11 is connected to the gas meter 10, a power answer request signal from the gas meter 10 must be detected a predetermined number of times. A CPU for switching the alarm 11 to the S-type gas meter when the power-supply answer request signal is detected a predetermined number of times while keeping the alarm 11 corresponding to the initially set G-type gas meter.
A control means such as 12 is provided in the alarm device 11.

【0008】[0008]

【発明の実施の形態】以下、図面を参照しつつ、この発
明の実施の形態について説明する。図1は、請求項1に
記載の発明の一実施の形態であるガス漏れ警報装置の概
略構成図である。そのガス漏れ警報装置は、図中符号1
0で示すマイコン式ガスメータに警報器11を接続して
構成してなる。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a gas leak alarm device according to an embodiment of the present invention. The gas leak alarm is indicated by reference numeral 1 in the figure.
An alarm device 11 is connected to a microcomputer-type gas meter indicated by 0.

【0009】マイコン式ガスメータ10は、上述した従
来のものと同様のもので、一般家庭などに設置して使用
するG型ガスメータとS型ガスメータとがある。
The microcomputer-type gas meter 10 is similar to the above-mentioned conventional gas meter, and includes a G-type gas meter and an S-type gas meter which are installed and used in a general household or the like.

【0010】一方、警報器11は、その全体を制御する
CPU12を備え、そのCPU12に、ガスセンサ部1
3とともにスピーカ14およびLED15を接続する。
なお、図中符号16は、電源部であり、それに電源プラ
グ17を接続してなる。
On the other hand, the alarm device 11 has a CPU 12 for controlling the whole thereof, and the CPU 12
3 and a speaker 14 and an LED 15 are connected.
Reference numeral 16 in the figure denotes a power supply unit to which a power plug 17 is connected.

【0011】しかして、この警報器11を、ガスメータ
10に接続して設置し、電源プラグ17をコンセントに
差し込んで使用する。そして、警報器11のガスセンサ
部13でガス漏れを検知したとき、CPU12からガス
漏れ信号を出力し、スピーカ14から音声メッセージを
発声し、LED15を点滅してガス漏れ警報を発すると
ともに、ガスメータ10の図示しない遮断弁を閉止す
る。
The alarm 11 is connected to the gas meter 10 and installed, and the power plug 17 is inserted into an outlet for use. When a gas leak is detected by the gas sensor unit 13 of the alarm 11, a gas leak signal is output from the CPU 12, a voice message is emitted from the speaker 14, the LED 15 blinks to emit a gas leak alarm, and the gas meter 10 is turned on. Close the shut-off valve (not shown).

【0012】ところで、上述したガス漏れ警報装置にお
いて、ガスメータ10がS型ガスメータであると、その
S型ガスメータは、他方のG型ガスメータでは出力しな
い電源アンサ要求信号を出力する。たとえば図2(a)
に示すような電源アンサ要求信号を、不図示のメータC
PUから定期的に出力して警報器11のCPU12へ送
信する。一方、警報器11は、電源アンサ要求信号を検
出すると、同図(b)に示すような電源アンサ応答信号
を出力してS型ガスメータの前記メータCPUへ応答す
る。そして、S型ガスメータでは、そのような電源アン
サ応答信号を検出したとき、警報器11に電源が投入さ
れ正常な動作状態にあることを検知できるようにしてな
る。
In the gas leak alarm device described above, if the gas meter 10 is an S-type gas meter, the S-type gas meter outputs a power supply answer request signal which is not output by the other G-type gas meter. For example, FIG.
A power answer request signal as shown in FIG.
It is periodically output from the PU and transmitted to the CPU 12 of the alarm 11. On the other hand, upon detecting the power answer request signal, the alarm 11 outputs a power answer response signal as shown in FIG. 4B and responds to the meter CPU of the S-type gas meter. Then, in the S-type gas meter, when such a power answer response signal is detected, it is possible to detect that the alarm device 11 is powered on and is in a normal operation state.

【0013】そこで、この発明のガス漏れ警報装置で
は、S型ガスメータがG型ガスメータと異なり、特に電
源アンサ要求信号を出力することに着目し、警報器11
を、当初はG型ガスメータ対応に設定しておいて、警報
器11をガスメータ10に接続したとき、そのガスメー
タ10側から電源アンサ要求信号を所定回数検出しなけ
れば、ガスメータ10の種類をG型と判断し、警報器1
1をG型ガスメータ対応に設定したままとする。一方、
電源アンサ要求信号を所定回数検出したならば、S型と
判断して警報器11をS型ガスメータ対応に自動的に切
り換えるようにする。
Therefore, in the gas leak alarm device according to the present invention, the S-type gas meter is different from the G-type gas meter, and pays particular attention to outputting a power answer request signal.
Is initially set to be compatible with the G-type gas meter, and when the alarm device 11 is connected to the gas meter 10 and the power supply answer request signal is not detected from the gas meter 10 side a predetermined number of times, the type of the gas meter 10 is changed to G-type. Judge and alarm 1
1 remains set for the G-type gas meter. on the other hand,
If the power supply answer request signal is detected a predetermined number of times, it is determined that the alarm is of the S type and the alarm 11 is automatically switched to the S type gas meter.

【0014】以下、そのようにCPU12で行う警報器
11の動作切換制御について、図3に示すフローチャー
トに従って具体的に説明する。
Hereinafter, the operation switching control of the alarm device 11 performed by the CPU 12 will be specifically described with reference to a flowchart shown in FIG.

【0015】まず、警報器11は、その使用当初からG
型ガスメータ対応に設定してある。つまり、ステップS
1にて示すように、CPU12のS設定カウンタとフラ
グを「0」にしてある。
First, the alarm 11 has been used since the beginning of its use.
It has been set up for a type gas meter. That is, step S
As shown by 1, the S setting counter and flag of the CPU 12 are set to “0”.

【0016】次いで、ステップS2にて、所定時間内に
ガスメータ10側から電源アンサ要求信号を検出するか
否かをチェックする。そして、電源アンサ要求信号を検
出しなかったときは、ステップS3にて、警報器11を
接続したガスメータ10の種類をG型と判断し、S設定
フラグを「0」にしたままステップS8のメインルーチ
ンへと進み、G型ガスメータ対応の所定プログラムに従
って警報器11を動作させる。しかる後、再びステップ
S2へと戻る。
Next, in step S2, it is checked whether or not a power answer request signal is detected from the gas meter 10 within a predetermined time. If the power answer request signal is not detected, the type of the gas meter 10 to which the alarm 11 is connected is determined to be the G type in step S3, and the main routine of step S8 is performed while the S setting flag is set to "0". Proceeding to a routine, the alarm 11 is operated according to a predetermined program corresponding to the G-type gas meter. Thereafter, the process returns to step S2.

【0017】一方、ステップS2にて、電源アンサ要求
信号を検出したときは、ステップS4に進み、S設定フ
ラグが「1」になっているか否かを判断し、「1」にな
っていないときは、次のステップ5にて、電源アンサ要
求信号の検出回数をカウントし、その検出回数に応じて
S設定カウンタを1つずつ加算する。そして、ステップ
S6にて、そのカウンタ値が3に達したか否かをチェッ
クし、未だ3に達していないときは、S設定フラグが
「0」のG設定のままメインルーチンへ進み、警報器1
1をG型対応の所定プログラムに従って動作させる。
On the other hand, if a power answer request signal is detected in step S2, the process proceeds to step S4, where it is determined whether or not the S setting flag is "1". Counts the number of times the power supply answer request signal is detected in the next step 5, and increments the S setting counter one by one according to the number of times detected. Then, in step S6, it is checked whether the counter value has reached 3, and if it has not yet reached 3, the program proceeds to the main routine with the S setting flag set to "0" and the alarm 1
1 is operated according to a predetermined program corresponding to the G type.

【0018】他方、ステップS6にて、カウンタ値が3
に達したときは、次のステップS7にて、警報器11を
接続したガスメータ10の種類を、初めてS型と判断
し、S設定フラグを「1」にする。そして、次のメイン
ルーチンにて警報器11をG型ガスメータ対応からS型
ガスメータ対応に切り換え、そのS型対応の所定プログ
ラムに従って警報器11を動作させる。
On the other hand, at step S6, the counter value becomes 3
Is reached, in the next step S7, the type of the gas meter 10 to which the alarm 11 is connected is determined to be the S type for the first time, and the S setting flag is set to "1". Then, in the next main routine, the alarm 11 is switched from the G-type gas meter to the S-type gas meter, and the alarm 11 is operated according to the S-type predetermined program.

【0019】また、前記ステップS4にて、S設定フラ
グが「1」のS型設定に既に切り換わっている場合は、
ステップS8のメインルーチンにて警報器11をそのま
まS型対応の所定プログラムに従って動作させる。以
後、上述した動作を繰り返し行うことにより、接続した
ガスメータ10の種類に応じて警報器11が動作するよ
うに制御する。
If it is determined in step S4 that the S setting flag has already been switched to the S type setting of "1",
In the main routine of step S8, the alarm device 11 is operated as it is according to a predetermined program corresponding to the S type. Thereafter, the above operation is repeatedly performed to control the alarm 11 to operate according to the type of the connected gas meter 10.

【0020】なお、上述した実施の形態では、電源アン
サ要求信号をCPU12にて3回検出したときに、警報
器11をS型ガスメータ対応に切り換えた。しかし、そ
の電源アンサ要求信号を1回検出したときに切り換える
ようにしてもよいし、反対に3回以上検出して初めて切
り換えるようにしてもよい。
In the above-described embodiment, when the power supply answer request signal is detected three times by the CPU 12, the alarm 11 is switched to the S-type gas meter. However, switching may be performed when the power supply answer request signal is detected once, or conversely, switching may be performed only after detection is performed three or more times.

【0021】[0021]

【発明の効果】したがって、請求項1に記載の発明によ
れば、警報器を接続したマイコン式ガスメータの種類
を、一方のS型ガスメータに特有の電源アンサ要求信号
を警報器が所定回数検出したか否かによって判別し、そ
の判別結果に基づき警報器のガスメータ対応を自動的に
切り換えるようにするから、従来のような切換スイッチ
が不要となり、その結果、切換スイッチの分だけコスト
を下げることができ、また、切換スイッチの面倒な操作
もなくなるため、その切換操作を間違ったり、忘れたり
する弊害も解消することができる。
Therefore, according to the first aspect of the present invention, the type of the microcomputer type gas meter to which the alarm is connected and the power supply answer request signal specific to one S-type gas meter are detected by the alarm for a predetermined number of times. It is determined based on whether or not the alarm switch is used, and the gas meter corresponding to the alarm is automatically switched based on the determination result. Therefore, the conventional changeover switch becomes unnecessary, and as a result, the cost can be reduced by the changeover switch. Also, the troublesome operation of the changeover switch can be eliminated, so that the problem of erroneous or forgetting the changeover operation can be eliminated.

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

【図1】請求項1に記載の発明の一実施の形態であるガ
ス漏れ警報装置を示す概略構成図である。
FIG. 1 is a schematic configuration diagram illustrating a gas leak alarm device according to an embodiment of the present invention.

【図2】(a)はそのガス漏れ警報装置に備えるS型ガ
スメータ側から出力する電源アンサ要求信号の波形図で
あり、(b)は警報器側から出力する電源アンサ応答信
号の波形図である。
2A is a waveform diagram of a power answer request signal output from the S-type gas meter provided in the gas leak alarm device, and FIG. 2B is a waveform diagram of a power answer response signal output from the alarm device side. is there.

【図3】その警報器の動作切換制御を説明するフローチ
ャートである。
FIG. 3 is a flowchart illustrating the operation switching control of the alarm device.

【図4】従来のガス漏れ警報装置の概略構成図である。FIG. 4 is a schematic configuration diagram of a conventional gas leak alarm device.

【符号の説明】[Explanation of symbols]

10 ガスメータ 11 警報器 12 CPU(制御手段) Reference Signs List 10 gas meter 11 alarm 12 CPU (control means)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 マイコン式ガスメータに警報器を接続
し、ガス漏れを検知したときその警報器でガス漏れ警報
を発するガス漏れ警報装置において、前記警報器をガス
メータに接続したとき、そのガスメータからの電源アン
サ要求信号を所定回数検出しなければ、前記警報器を当
初設定したG型ガスメータ対応のままとし、電源アンサ
要求信号を所定回数検出したならば前記警報器をS型ガ
スメータ対応に切り換える制御手段を、前記警報器に備
えてなる、ガス漏れ警報装置。
1. A gas leak alarm device in which an alarm device is connected to a microcomputer-type gas meter, and when a gas leak is detected, a gas leak alarm is issued by the alarm device. If the power answer request signal is not detected a predetermined number of times, the alarm device is kept at the initially set G-type gas meter, and if the power answer request signal is detected the predetermined number of times, the alarm device is switched to the S-type gas meter. A gas leak alarm device provided with the alarm device.
JP29452696A 1996-10-16 1996-10-16 Gas leak alarm device Expired - Fee Related JP3678380B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29452696A JP3678380B2 (en) 1996-10-16 1996-10-16 Gas leak alarm device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29452696A JP3678380B2 (en) 1996-10-16 1996-10-16 Gas leak alarm device

Publications (2)

Publication Number Publication Date
JPH10124775A true JPH10124775A (en) 1998-05-15
JP3678380B2 JP3678380B2 (en) 2005-08-03

Family

ID=17808930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29452696A Expired - Fee Related JP3678380B2 (en) 1996-10-16 1996-10-16 Gas leak alarm device

Country Status (1)

Country Link
JP (1) JP3678380B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008275457A (en) * 2007-04-27 2008-11-13 Yazaki Corp Gas meter and gas leakage alarm device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008275457A (en) * 2007-04-27 2008-11-13 Yazaki Corp Gas meter and gas leakage alarm device

Also Published As

Publication number Publication date
JP3678380B2 (en) 2005-08-03

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