JPH02226061A - Gas detecting and alarming apparatus - Google Patents

Gas detecting and alarming apparatus

Info

Publication number
JPH02226061A
JPH02226061A JP4528089A JP4528089A JPH02226061A JP H02226061 A JPH02226061 A JP H02226061A JP 4528089 A JP4528089 A JP 4528089A JP 4528089 A JP4528089 A JP 4528089A JP H02226061 A JPH02226061 A JP H02226061A
Authority
JP
Japan
Prior art keywords
gas
detected
sensor
output
specified
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
JP4528089A
Other languages
Japanese (ja)
Inventor
Yoshinori Takahashi
良典 高橋
Yasunori Mori
森 康修
Hiroharu Miyoshi
弘治 三好
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.)
New Cosmos Electric Co Ltd
Takenaka Komuten Co Ltd
Original Assignee
New Cosmos Electric Co Ltd
Takenaka Komuten Co Ltd
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 New Cosmos Electric Co Ltd, Takenaka Komuten Co Ltd filed Critical New Cosmos Electric Co Ltd
Priority to JP4528089A priority Critical patent/JPH02226061A/en
Publication of JPH02226061A publication Critical patent/JPH02226061A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To simplify the operation and maintenance by a method wherein both outputs of first and second gas sensors which has the same sensitivity to a specified gas while having a different sensitivity to gases other than the specified gas to identify a detection output of the specified gas. CONSTITUTION:First and second gas sensors 4 and 5 have the same sensitivity to a specified gas to be detected at the same gas density but differ in sensitivity to gases other than the specified gas. Therefore, when a specified gas is detected with a gas detection alarm 1, output values of the gas sensors 4 and 5 are the same and transmits a signal identifying the specified gas from an output comparison identifying circuit 7 and it is indicated with a gas identification display device 8 that the gas being detected coincides with the gas to be detected. When other gases are detected, output values of the sensors 4 and 5 are different to each other and this difference is identified with the output comparison identifying circuit 7 and the gas identification display device 8 indicates that the detected gas is not the specified gas. This simplifies the operation and maintenance.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、特性の異なる2個のガスセンサを用いるこ
とにより所定のガス、例えば毒性のガスが簡単に識別で
きるようにしたガス検知警報装置に関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gas detection and alarm device that uses two gas sensors with different characteristics to easily identify a predetermined gas, such as a toxic gas. It is something.

〔従来の技術〕[Conventional technology]

従来から使用されている定置式のガス検知警報装置は、
ガスの種類を識別できるものがなかった。
The conventionally used stationary gas detection alarm device is
There was nothing to identify the type of gas.

このため、ガスの種類を識別する必要が“ある場合は分
析計を使用していた。
For this reason, if there was a need to identify the type of gas, an analyzer was used.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

ところで、従来の定置式のガス検知警報装置に分析計を
使用する場合は、バッチ式のためリアルタイムでの漏洩
ガスの識別が不可能であるという問題点があった。また
、分析計は定置式のガス検知警報装置に比べてはるかに
高価であり、かつ操作と保守の頻度が高いためガス検知
警報装置に比べ非常に使いにくいという問題点があった
By the way, when an analyzer is used in a conventional stationary gas detection and alarm device, there is a problem in that it is impossible to identify leaked gas in real time because it is a batch type. In addition, analyzers are much more expensive than stationary gas detection and alarm devices, and require frequent operation and maintenance, making them much more difficult to use than gas detection and alarm devices.

この発明は、上記の問題点を解決するためになされたも
ので、2個のガスセンサを使用することにより検知すべ
き所定のガスか、所定のガス以外のガスかを識別できる
ようにしたガス検知警報装置を得ることを目的とする。
This invention was made in order to solve the above-mentioned problems, and is a gas detection device that uses two gas sensors to distinguish between a predetermined gas to be detected and a gas other than the predetermined gas. The purpose is to obtain an alarm device.

〔課題を解決するための手段〕[Means to solve the problem]

この発明にかかるガス検知警報装置は、所定のガスに対
しては同一の感度を有し、所定のガス以外のガスに対し
てはそれぞれ異なる感度を有する第1のガスセンサと第
2のガスセンサとを備え、第1のガスセンサと第2のガ
スセンサの両出力を比較して所定ガスの検知出力か否か
を識別する出力比較識別回路と、この出力比較識別回路
で識別された信号を表示するガス識別表示器を設けたも
のである。
The gas detection alarm device according to the present invention includes a first gas sensor and a second gas sensor that have the same sensitivity to a predetermined gas and different sensitivities to gases other than the predetermined gas. an output comparison identification circuit that compares the outputs of the first gas sensor and the second gas sensor to identify whether the output is a detection output of a predetermined gas; and a gas identification circuit that displays the signal identified by the output comparison identification circuit. It is equipped with an indicator.

〔作用〕[Effect]

この発明においては、第1のセンサと第2のセンサで検
知した信号の出力を比較識別して、同一の大きさの出力
であれば目的とする所定のガスを検知したことを表示し
、異なる大きさの出力であれば所定のガス以外のガスを
検知したことを表示する。
In this invention, the outputs of the signals detected by the first sensor and the second sensor are compared and identified, and if the outputs are the same, it is indicated that the target predetermined gas has been detected, and If the output is of the same magnitude, it is displayed that a gas other than the predetermined gas has been detected.

〔実施例〕〔Example〕

第1図はこの発明の一実施例を示す構成図で、Gはガス
、1はガス検知警報装置の全体を示し、2は前記ガスG
のガス採取口、3は前記ガスGのガス流通路、4は第1
のガスセンサ、5は例えば前記第1のがスセンサ4と同
一動作原理の第2のガスセンサで、図示のものは、−例
として並列に接続されている。6は前記ガスGを吸引し
て採取するポンプ、7は前記第1のガスセンサ4と第2
のガスセンサ5で感知された信号の出力を比較して同一
の大きさであれば所定ガス、同一の大きさでなければ所
定ガス以外のガスであると識別する出力比較識別回路、
8は前記出力比較識別回路7で識別された信号を表示す
るガス識別表示器で、ランプまたは警報音を発生するブ
ザー等が設けられている。
FIG. 1 is a configuration diagram showing an embodiment of the present invention, in which G indicates a gas, 1 indicates the entire gas detection and alarm device, and 2 indicates the gas G.
3 is a gas flow path for the gas G; 4 is a first gas sampling port;
The gas sensor 5 is, for example, a second gas sensor having the same operating principle as the first gas sensor 4, and the one shown is connected in parallel, for example. 6 is a pump that sucks and collects the gas G, and 7 is the first gas sensor 4 and the second gas sensor.
an output comparison/identification circuit that compares the outputs of the signals sensed by the gas sensor 5 and identifies a predetermined gas if they are of the same magnitude, and a gas other than the predetermined gas if they are not of the same magnitude;
Reference numeral 8 denotes a gas identification display that displays the signal identified by the output comparison and identification circuit 7, and is provided with a lamp or a buzzer that generates an alarm.

次に動作について説明する。Next, the operation will be explained.

第2図(a)、(b)は第1のガスセンサ4と第2のガ
スセンサ5の各種ガスに対するセンサ出力を示す特性図
で、第2図(a)は第1のガスセンサ4、第2図(b)
は第2のガスセンサ5の場合を示す。
FIGS. 2(a) and 2(b) are characteristic diagrams showing the sensor outputs of the first gas sensor 4 and the second gas sensor 5 for various gases; FIG. 2(a) is the first gas sensor 4, and FIG. (b)
shows the case of the second gas sensor 5.

このように、第1のガスセンサ4と第2のガスセンサ5
では検知すべき所定のガスG。につぃては同一のガス濃
度で同一の大きさのセンサ出力を有しているが、その他
のガスGy、G、に関しては感度がそれぞれ異なってい
る。このため、ガス検知警報装W1において、所定のガ
スGxを検知したときは、各ガスセンサ4,5のセンサ
出力値は同一となり、出力比較識別回路7からセンサ出
力が同一のガス濃度であることを、つま咋所定のガスG
8であることを識別した信号を発信し、検知したガス6
つが検知すべきガスG、であることをガス識別表示器8
で表示する。また、ガスGYを検知したときは第1のガ
スセンサ4ではセンサ出力値が小さく、第2のガスセン
サ5ではセンサ出力値が大きいためセンサ出力値が異な
るので、これが出力比較識別回路7が識別し、所定ガス
G9ではないという識別信号を発信しガス識別表示器8
で表示するか、または何の表示もしない。また、ガスG
2についてもガスGyの場合と同様である。
In this way, the first gas sensor 4 and the second gas sensor 5
Now, let's look at the predetermined gas G to be detected. In all cases, the sensor outputs are the same at the same gas concentration, but the sensitivities are different for the other gases Gy and G. Therefore, when the gas detection alarm device W1 detects a predetermined gas Gx, the sensor output values of the gas sensors 4 and 5 are the same, and the output comparison and identification circuit 7 indicates that the sensor outputs are the same gas concentration. , specified gas G
8, and the detected gas 6
The gas identification indicator 8 indicates that the gas to be detected is G.
Display in . Further, when gas GY is detected, the sensor output value is small in the first gas sensor 4 and the sensor output value is large in the second gas sensor 5, so the sensor output values are different, so the output comparison and identification circuit 7 identifies this, The gas identification indicator 8 sends an identification signal indicating that the gas is not the specified gas G9.
or nothing at all. Also, gas G
The same applies to 2 as in the case of gas Gy.

なお、第1のガスセンサ4と第2のガスセンサ5とは同
一の動作原理のガスセンサでなくても、異なる動作原理
を有するガスセンサ、例えば半導体式ガスセンサと定電
位電解式ガスセンサとの組合せであってもよく、検知す
べき所定のガスG8の同一のガス濃度に対して同一の大
きさのセンサ出力であればよい。このため、異なる動作
原理を有するガスセンサであっても上記と同様の動作が
行われる。
Note that the first gas sensor 4 and the second gas sensor 5 do not have to be gas sensors with the same operating principle, but may be gas sensors with different operating principles, such as a combination of a semiconductor gas sensor and a constant potential electrolytic gas sensor. In general, it is sufficient that the sensor output has the same magnitude for the same gas concentration of the predetermined gas G8 to be detected. Therefore, even if the gas sensor has a different operating principle, the same operation as described above is performed.

また、2個以上の複数個のガスセンサを組み合わせるこ
とにより複数種のガスを識別することも可能である。
Furthermore, it is also possible to identify multiple types of gas by combining two or more gas sensors.

〔発明の効果〕〔Effect of the invention〕

以上説明したようにこの発明は、所定のガスに対しては
同一の感度を有し、所定のガス以外のガスに対してはそ
れぞれ異なる感度を有する第1のガスセンサと第2のガ
スセンサとを備え、第1のガスセンサと第2のガスセン
サの両出力を比較することにより所定ガスの検知出力か
否かを識別する出力比較識別回路と、この出力比較識別
回路で識別された信号を表示するガス識別表示器を設け
たので、価格の安い2個のガスセンサを使用して目的と
する所定ガスを簡単に識別できるため、操作および保守
が簡単となり、ガス検知警報装置の設置が安価に実現で
きる等の利点を有する。
As explained above, the present invention includes a first gas sensor and a second gas sensor that have the same sensitivity to a predetermined gas and different sensitivities to gases other than the predetermined gas. , an output comparison identification circuit that identifies whether or not the detected output is a predetermined gas by comparing the outputs of the first gas sensor and the second gas sensor; and a gas identification circuit that displays the signal identified by the output comparison identification circuit. Since the display device is provided, the target gas can be easily identified using two inexpensive gas sensors, which simplifies operation and maintenance, making it possible to install gas detection and alarm devices at low cost. has advantages.

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

第1図はこの発明の一実施例を示す構成図、第2図(a
l、(b)は、第1図の各ガスセンサに対してそれぞれ
各種ガスのセンサ出力を示す特性図である。 図中、1はガス検知警報装置、2はガス採取口、3はガ
ス流通路、4は第1のガスセンサ、5は第2のガスセン
サ、6はポンプ、7は出力比較識別回路、8はガス識別
表示器、Gはガス、G8は所定のガス、GVpGtは所
定のガス9外のガスである。
FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG. 2 (a
1 and (b) are characteristic diagrams showing sensor outputs of various gases for each gas sensor in FIG. 1, respectively. In the figure, 1 is a gas detection alarm device, 2 is a gas sampling port, 3 is a gas flow path, 4 is a first gas sensor, 5 is a second gas sensor, 6 is a pump, 7 is an output comparison identification circuit, and 8 is a gas In the identification display, G is a gas, G8 is a predetermined gas, and GVpGt is a gas other than the predetermined gas 9.

Claims (1)

【特許請求の範囲】[Claims] 所定のガスに対しては同一の感度を有し、前記所定のガ
ス以外のガスに対してはそれぞれ異なる感度を有する第
1のガスセンサと第2のガスセンサとを備え、前記第1
のガスセンサと第2のガスセンサの両出力を比較して前
記所定ガスの検知出力か否かを識別する出力比較識別回
路と、この出力比較識別回路で識別された信号を表示す
るガス識別表示器を設けたことを特徴とするガス検知警
報装置。
a first gas sensor and a second gas sensor having the same sensitivity to a predetermined gas and different sensitivities to gases other than the predetermined gas;
an output comparison identification circuit that compares the outputs of the first gas sensor and the second gas sensor to identify whether the output is the detection output of the predetermined gas; and a gas identification display that displays the signal identified by the output comparison identification circuit. A gas detection alarm device characterized in that:
JP4528089A 1989-02-28 1989-02-28 Gas detecting and alarming apparatus Pending JPH02226061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4528089A JPH02226061A (en) 1989-02-28 1989-02-28 Gas detecting and alarming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4528089A JPH02226061A (en) 1989-02-28 1989-02-28 Gas detecting and alarming apparatus

Publications (1)

Publication Number Publication Date
JPH02226061A true JPH02226061A (en) 1990-09-07

Family

ID=12714897

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4528089A Pending JPH02226061A (en) 1989-02-28 1989-02-28 Gas detecting and alarming apparatus

Country Status (1)

Country Link
JP (1) JPH02226061A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298783A (en) * 1991-09-09 1994-03-29 Yunnan University Combined semiconductor gas sensor
JP2012529097A (en) * 2009-06-05 2012-11-15 エックストラリス・テクノロジーズ・リミテッド Gas detector

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142389A (en) * 1975-06-03 1976-12-07 Nissan Motor Co Ltd Oxygen senser

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51142389A (en) * 1975-06-03 1976-12-07 Nissan Motor Co Ltd Oxygen senser

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5298783A (en) * 1991-09-09 1994-03-29 Yunnan University Combined semiconductor gas sensor
JP2012529097A (en) * 2009-06-05 2012-11-15 エックストラリス・テクノロジーズ・リミテッド Gas detector

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