JP5619385B2 - Alarm - Google Patents

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JP5619385B2
JP5619385B2 JP2009172713A JP2009172713A JP5619385B2 JP 5619385 B2 JP5619385 B2 JP 5619385B2 JP 2009172713 A JP2009172713 A JP 2009172713A JP 2009172713 A JP2009172713 A JP 2009172713A JP 5619385 B2 JP5619385 B2 JP 5619385B2
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alarm
concentration
detected
stop
physical quantity
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JP2011028468A (en
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犬塚　和宏
和宏 犬塚
裕正 高島
裕正 高島
良春 名川
良春 名川
高橋　英樹
英樹 高橋
唯宣 中島
唯宣 中島
尚史 小澤
尚史 小澤
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Yazaki Energy System Corp
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons
    • G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16—Combustible gas alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions

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  • General Physics & Mathematics (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Alarm Devices (AREA)
  • Fire Alarms (AREA)
  • Alarm Systems (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)

Description

本発明は、例えば一酸化炭素（ＣＯ）などの検出対象ガス等のガス濃度を検出するガスセンサ、火災発生時の煙濃度を検出する煙センサ、あるいは火災発生時の温度を検出する温度センサなど、監視領域の雰囲気がもつ監視対象の物理量を検出するセンサを備え、該センサが検出した検出物理量が所定の警報レベルになると警報を発生するとともに、ユーザの操作により警報を停止することが可能な警報器に関する。   The present invention is, for example, a gas sensor that detects a gas concentration of a detection target gas such as carbon monoxide (CO), a smoke sensor that detects a smoke concentration at the time of a fire, or a temperature sensor that detects a temperature at the time of a fire, An alarm that includes a sensor that detects a physical quantity to be monitored in the atmosphere of the monitoring area, and that generates an alarm when the detected physical quantity detected by the sensor reaches a predetermined alarm level, and that can be stopped by a user operation Related to the vessel.

従来、この種の警報器として、例えばガス警報器があり、警報発生時にユーザがスイッチ（警報停止スイッチ）を操作すると一定時間警報を停止させるガス警報器がある。また、この警報を停止させる警報停止時間として複数用意したものが、例えば特開２００８−１６０１０号公報（特許文献１）に開示されている。この特許文献１のものは、警報を停止した時点でガスセンサによって検出されたＣＯ濃度に応じて、警報を再開するまでの時間（警報停止時間）を変更するようにしている。例えば、１００〜９９９ｐｐｍのときは６０秒後に警報を再開させ、１０００〜１９９９ｐｐｍのときは３０秒後に警報を再開させ、２０００ｐｐｍ以上のときは１０秒後に警報を再開させるようにしている。   Conventionally, as this type of alarm device, for example, there is a gas alarm device, and there is a gas alarm device that stops an alarm for a certain time when a user operates a switch (alarm stop switch) when an alarm occurs. Moreover, what prepared two or more alarm stop time which stops this alarm is disclosed by Unexamined-Japanese-Patent No. 2008-16010 (patent document 1), for example. In Patent Document 1, the time until the alarm is restarted (alarm stop time) is changed according to the CO concentration detected by the gas sensor when the alarm is stopped. For example, when 100 to 999 ppm, the alarm is restarted after 60 seconds, when 1000 to 1999 ppm, the alarm is restarted after 30 seconds, and when 2000 ppm or more, the alarm is restarted after 10 seconds.

特開２００８−１６０１０号公報JP 2008-16010 A

特許文献１のものは、ユーザが警報停止スイッチを操作した時点、すなわち警報停止時点でのＣＯ濃度に応じて、警報停止時間を異ならせるようにし、ＣＯ濃度が高いほど警報停止時間を短く設定している。しかしながら、前記一定時間警報を停止されるものでも、この特許文献１のものでも、設定された警報停止時間は一定であり、その警報停止時間内はＣＯ濃度の変化に係わりなく警報が停止されるため、次のような問題がある。   In Patent Document 1, the alarm stop time is made different according to the CO concentration at the time when the user operates the alarm stop switch, that is, the alarm stop time. The higher the CO concentration, the shorter the alarm stop time is set. ing. However, whether the alarm is stopped for a certain period of time or the one disclosed in Patent Document 1, the set alarm stop time is constant, and the alarm is stopped within the alarm stop time regardless of the change in CO concentration. Therefore, there are the following problems.

警報中に警報停止スイッチを押した時点でのＣＯ濃度が、例えば１０００ｐｐｍ以下であった場合、警報停止時間は１分（６０秒）となり、この間にＣＯ濃度が上昇する可能性がある。ＣＯ濃度が２５００ｐｐｍまで上昇した場合、警報状態となっているので、ＣＯＨｂは既に２０％を超えており、２０００ｐｐｍで１分の間にさらにＣＯＨｂが１５．８％上昇し、ＣＯＨｂは３５．８％となって、ユーザの安全を確保できない可能性がある。   If the CO concentration at the time when the alarm stop switch is pressed during an alarm is 1000 ppm or less, for example, the alarm stop time is 1 minute (60 seconds), and the CO concentration may increase during this time. When the CO concentration rises to 2500 ppm, it is in an alarm state, so COHb has already exceeded 20%, COHb has further increased 15.8% in 1 minute at 2000 ppm, and COHb has 35.8%. Thus, there is a possibility that the safety of the user cannot be ensured.

本発明は、警報音を停止させる機能を有する警報器において、警報停止中の監視対象の物理量の上昇、例えば検知対象ガスのガス濃度の上昇等に対する安全性を確保することを課題とする。   An object of the present invention is to secure safety against an increase in a physical quantity to be monitored while an alarm is stopped, for example, an increase in gas concentration of a detection target gas, in an alarm device having a function of stopping an alarm sound.

請求項１の警報器は、監視領域の雰囲気がもつ監視対象の物理量を検出するセンサを備え、該センサが検出した検出物理量が所定の警報レベルになると警報を発生する警報器であって、警報停止スイッチの操作に応じて警報を停止する警報停止手段と、前記警報停止手段による警報停止中に前記センサの検出する検出物理量または該検出物理量の変化量を監視する停止中監視手段とを備え、前記停止中監視手段は、前記警報停止手段による警報停止の開始時の検出物理量に応じて警報を再開させるまでの初期時間を選択し、前記停止中監視手段は、前記初期時間及び警報停止中の検出物理量の変化量に応じて警報を再開させるまでの時間を変更することを特徴とする。 The alarm device according to claim 1 is provided with a sensor that detects a physical quantity to be monitored in the atmosphere of the monitoring area, and generates an alarm when the detected physical quantity detected by the sensor reaches a predetermined alarm level. An alarm stop means for stopping an alarm in response to an operation of a stop switch; and a monitoring unit for stopping that monitors a detected physical quantity detected by the sensor or an amount of change in the detected physical quantity during an alarm stop by the alarm stop means, The during-stop monitoring means selects an initial time until the alarm is restarted according to a physical quantity detected when the alarm stop is started by the alarm stop means, and the during-stop monitoring means is configured to stop the initial time and the alarm is stopped. depending on the amount of change detection physical quantity and changes the time to resume the alarm.

請求項２の警報器は、請求項１に記載の警報器であって、前記停止中監視手段は、前記警報停止中の検出物理量の変化量が予め設定された所定レベルを超えた場合に直ぐに警報を発生することを特徴とする。 Alarm according to claim 2 is an alarm device according to claim 1, wherein the stopped monitoring unit, when the amount of change detection physical quantity in said alarm stop exceeds a predetermined level set in advance immediately characterized in that it generates an alarm.

請求項１の警報器によれば、警報停止中の検出物理量または該検出物理量の変化量を監視して、検出物理量の変化量が上昇したとき、警報を再開するまでの時間を短くすることが可能となり、警報停止の機能を果たしながら検出物理量または該検出物理量の上昇に対する安全性を確保することができる。 According to the alarm device of claim 1, monitors the detected physical quantity or detection physical quantity of the amount of change in alarm stop, when the amount of change detection physical quantity is increased, shortening the time until resuming alarm Thus, it is possible to ensure the safety against the detected physical quantity or the increase in the detected physical quantity while fulfilling the alarm stop function.

また、警報停止の開始時の検出物理量に応じて初期時間を選択するので、警報停止直後に、検出物理量に応じた適正な時間に設定できる。 Further, since the initial time is selected according to the detected physical quantity at the start of the alarm stop, it can be set to an appropriate time according to the detected physical quantity immediately after the alarm stop.

請求項２の警報器によれば、請求項１の効果に加えて、高い濃度変化量など、検出物理量の高い変化量に対応する所定レベルを超えた場合、即座に警報を再開することができ、さらに安全性を確保することができる。 According to the alarm device of claim 2, in addition to the effect of claim 1, such as high density variation, when exceeding a predetermined level corresponding to the high variation of detected physical quantity, it is possible to immediately restart the alarm Further, safety can be ensured.

本発明の実施形態のガス警報器の要部ブロック図である。It is a principal part block diagram of the gas alarm device of embodiment of this invention. 実施形態における第１参考例のマイコンの制御を示す要部フローチャートである。It is a principal part flowchart which shows control of the microcomputer of the 1st reference example in embodiment. 実施形態における第２参考例のマイコンの制御を示す要部フローチャートである。It is a principal part flowchart which shows control of the microcomputer of the 2nd reference example in embodiment. 実施形態における第３参考例のマイコンの制御を示す要部フローチャートである。It is a principal part flowchart which shows control of the microcomputer of the 3rd reference example in embodiment. 実施形態における実施例のマイコンの制御を示す要部フローチャートである。It is a main part flowchart showing the control of the microcomputer of that Example put to the embodiment.

次に、本発明の実施の形態を図面に基づいて説明する。以下の実施形態は警報器としてガス警報器の例を示すものであるが、後述するように、本発明の警報器としては火災警報器等にも適用できる。図１は実施形態のガス警報器の要部ブロック図である。この実施形態のガス警報器は、ガス及び火災監視を行う複合型のガス警報器であり、マイコン１、例えば「監視対象の物理量」として一酸化炭素（ＣＯ）の濃度を検出する電気化学式ガスセンサ等のガスセンサ２、ユーザが操作可能な警報停止スイッチ３，各種設定データ等を記憶するＥＥＰＲＯＭ４、警報時に例えばＬＥＤ等を点灯する表示部５，警報時にユーザに対して警報音やメッセージ等を発生する音声出力回路６及びスピーカ７等を備えている。なお、マイコン１の処理は以下の各実施例によって異なるが、ブロック図は同様である。   Next, embodiments of the present invention will be described with reference to the drawings. Although the following embodiment shows an example of a gas alarm device as an alarm device, as will be described later, the alarm device of the present invention can also be applied to a fire alarm device or the like. FIG. 1 is a main part block diagram of the gas alarm device of the embodiment. The gas alarm device of this embodiment is a combined gas alarm device that performs gas and fire monitoring, such as a microcomputer 1, an electrochemical gas sensor that detects the concentration of carbon monoxide (CO) as a “physical quantity to be monitored”, or the like. Gas sensor 2, alarm stop switch 3 that can be operated by the user, EEPROM 4 that stores various setting data, a display unit that lights up an LED, etc. at the time of an alarm, and a voice that generates an alarm sound or a message to the user at the time of an alarm An output circuit 6 and a speaker 7 are provided. The processing of the microcomputer 1 differs depending on the following embodiments, but the block diagram is the same.

マイコン１はＣＰＵ１１、ＲＯＭ１２及びＲＡＭ１３等で構成されている。ＣＰＵ１１は、周知のように、予め定めたプログラムに従って各種の処理や制御などを行うものであり、ＲＯＭ１２には、このＣＰＵ１１のための制御プログラム等が格納されている。そして、ＣＰＵ１１は、ＲＡＭ１３のワーキングエリアを利用して各種の処理を行う。なお、ＥＥＰＲＯＭ４には、ＣＯ濃度に応じて警報を発生する閾値となる予め決められた警報濃度のデータが記憶されている。また、第１参考例の場合には、ＥＥＰＲＯＭ４には、警報停止中にＣＯ濃度を比較する予め設定された「設定レベル」としての基準値（濃度値Ｘ％）のデータが記憶されている。また、第３参考例の場合には、ＥＥＰＲＯＭ４には、ＣＯ濃度のガス濃度変化量を比較する予め設定された「設定レベル」としての基準値（傾き値ａ）のデータが記憶されている。 The microcomputer 1 includes a CPU 11, a ROM 12, a RAM 13, and the like. As is well known, the CPU 11 performs various processes and controls according to a predetermined program, and the ROM 12 stores a control program for the CPU 11 and the like. Then, the CPU 11 performs various processes using the working area of the RAM 13. The EEPROM 4 stores data of a predetermined alarm concentration that is a threshold value for generating an alarm according to the CO concentration. In the case of the first reference example , the EEPROM 4 stores data of a reference value (concentration value X%) as a preset “setting level” for comparing the CO concentration while the alarm is stopped. In the case of the third reference example , the EEPROM 4 stores data of a reference value (inclination value a) as a preset “setting level” for comparing the gas concentration change amount of the CO concentration.

マイコン１のＣＰＵ１１は、ガス警報器の電源コード（図示せず）がコンセントに接続されて電源が供給され始めると、点検モードの時間の経過後、通常モードに入り、ＲＯＭ１２に格納されたガス及び火災の監視に関する制御プログラムに従って、ガス及び火災監視モードの処理を実行する。そして、ＣＯ濃度が所定の警報濃度に達すると警報音を発生し、この警報発生時に警報停止スイッチ３が操作されると警報音を停止する。また、この警報音が停止されるとガスセンサ２によりＣＯ濃度あるいはＣＯ濃度変化量を監視し、このＣＯ濃度またはＣＯ濃度変化量に応じて警報を再開始するまでの警報停止時間を制御する。第１参考例では、ＣＯ濃度が基準値（Ｘ％）を超えていると、直ぐに警報を再開始する。 When the power cord (not shown) of the gas alarm device is connected to the outlet and power is supplied, the CPU 11 of the microcomputer 1 enters the normal mode after the elapse of the inspection mode, and the gas stored in the ROM 12 The gas and fire monitoring mode processing is executed according to the control program related to fire monitoring. When the CO concentration reaches a predetermined alarm concentration, an alarm sound is generated, and when the alarm stop switch 3 is operated when the alarm occurs, the alarm sound is stopped. When the alarm sound is stopped, the gas sensor 2 monitors the CO concentration or CO concentration change amount, and controls the alarm stop time until the alarm is restarted according to the CO concentration or CO concentration change amount. In the first reference example , when the CO concentration exceeds the reference value (X%), the alarm is restarted immediately.

マイコン１が後述のプログラムを実行することにより実現する機能が、警報停止スイッチ２の操作により警報を停止する警報停止手段、警報停止中にガス濃度（検出濃度）または検出濃度傾き（ガス濃度変化量）を監視する停止中監視手段にそれぞれ対応する。   The function realized by the microcomputer 1 executing a program to be described later is an alarm stop means for stopping the alarm by operating the alarm stop switch 2, a gas concentration (detected concentration) or a detected concentration gradient (gas concentration change amount during the alarm stop). ) Corresponding to the monitoring means for stopping.

以下の第１参考例及び第２参考例はＣＯ濃度の値に応じた制御を行い、第３参考例及び実施例はＣＯ濃度の濃度変化量に応じた制御を行う。以下、ガスセンサ２で検出される現在のＣＯ濃度を「検出濃度」とし、このＣＯ濃度の濃度変化量を「検出濃度傾き」とする。なお、マイコン１はガスセンサ２によりＣＯ濃度を所定の間隔でサンプリングする。また、濃度変化量は所定の時間差をもってサンプリングした前後の検出濃度の差を時間差で除算した値である。 Following the first reference example and the second reference example performs control according to the value of the CO concentration, a third reference example及beauty embodiment performs control corresponding to the density change amount of the CO concentration. Hereinafter, the current CO concentration detected by the gas sensor 2 is referred to as “detected concentration”, and the concentration change amount of this CO concentration is referred to as “detected concentration gradient”. The microcomputer 1 samples the CO concentration at a predetermined interval by the gas sensor 2. The density change amount is a value obtained by dividing the difference in detected density before and after sampling with a predetermined time difference by the time difference.

（第１参考例）図２は実施形態に係るＣＰＵ１１が実行する第１参考例の制御プログラムの要部フローチャートである。まず、ステップＳ１で検出濃度が警報濃度以上になるのを監視する。検出濃度が警報濃度以上になると、ステップＳ２で警報を発生してステップＳ３に進む。ステップＳ３では警報停止スイッチ３がＯＮとなっているかを判定し、ＯＮとなっていなければステップＳ８に進み、ＯＮとなっていればステップＳ４で警報を停止する。 (First Reference Example ) FIG. 2 is a main part flowchart of a control program of a first reference example executed by the CPU 11 according to the embodiment. First, it is monitored in step S1 that the detected concentration becomes equal to or higher than the alarm concentration. If the detected concentration is equal to or higher than the alarm concentration, an alarm is generated in step S2, and the process proceeds to step S3. In step S3, it is determined whether the alarm stop switch 3 is ON. If not, the process proceeds to step S8, and if it is ON, the alarm is stopped in step S4.

次に、ステップＳ５でＥＥＰＲＯＭ４から基準値（Ｘ％）を読み出して比較用に設定し、ステップＳ６で検出濃度が基準値（Ｘ％）以下であるかを判定し、基準値（Ｘ％）以下でなければステップＳ２で直ぐに警報を発生する。基準値（Ｘ％）以下であれば、ステップＳ７で警報開始から５分経過しているかを判定し、５分経過していなればばステップＳ６の判定を繰り返す。５分経過していれば、ステップＳ８で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ９で警報を停止してステップＳ１に戻る。   Next, in step S5, the reference value (X%) is read from the EEPROM 4 and set for comparison. In step S6, it is determined whether the detected density is less than the reference value (X%). Otherwise, an alarm is generated immediately in step S2. If it is equal to or less than the reference value (X%), it is determined in step S7 whether 5 minutes have elapsed since the start of the alarm. If 5 minutes have not elapsed, the determination in step S6 is repeated. If 5 minutes have passed, it is determined in step S8 whether the detected concentration is equal to or lower than the alarm concentration. If it is not lower than the alarm concentration, the process proceeds to step S2 and the generation of the alarm is continued. If it is lower than the alarm concentration, the alarm is stopped in step S9 and the process returns to step S1.

以上のように、この第１参考例では、ステップＳ６及びステップＳ２の処理により、警報停止中でも検出濃度（ＣＯ濃度）が基準値（Ｘ％）（所定レベル）を超えていると直ぐに警報を発生する。 As described above, in the first reference example , an alarm is generated immediately when the detected concentration (CO concentration) exceeds the reference value (X%) (predetermined level) even when the alarm is stopped, by the processing in steps S6 and S2. To do.

（第２参考例）図３は実施形態に係るＣＰＵ１１が実行する第２参考例の制御プログラムの要部フローチャートである。まず、ステップＳ１１で検出濃度が警報濃度以上になるのを監視する。検出濃度が警報濃度以上になると、ステップＳ１２で警報を発生してステップＳ１３に進む。ステップＳ１３では警報停止スイッチ３がＯＮとなっているかを判定し、ＯＮとなっていなければステップＳ２６に進み、ＯＮとなっていればステップＳ１４で警報を停止する。 (Second Reference Example ) FIG. 3 is a main part flowchart of a control program of a second reference example executed by the CPU 11 according to the embodiment. First, in step S11, it is monitored that the detected concentration becomes equal to or higher than the alarm concentration. When the detected concentration is equal to or higher than the alarm concentration, an alarm is generated in step S12 and the process proceeds to step S13. In step S13, it is determined whether the alarm stop switch 3 is ON. If not, the process proceeds to step S26, and if it is ON, the alarm is stopped in step S14.

次に、ステップＳ１５で現在の検出濃度を比較用の濃度（Ｘｐｐｍ）として設定し、ステップＳ１６で濃度（Ｘｐｐｍ）が何れの濃度域に有るかを判定する。濃度（Ｘｐｐｍ）が１００〜９９９ｐｐｍの濃度域であればステップＳ１７に進み、濃度（Ｘｐｐｍ）が１０００〜１９９９ｐｐｍの濃度域であればステップＳ２１に進み、濃度（Ｘｐｐｍ）が２０００〜２５００ｐｐｍの濃度域であればステップＳ２４に進む。   Next, in step S15, the current detected concentration is set as a comparative concentration (Xppm), and in step S16, it is determined in which concentration range the concentration (Xppm) is. If the concentration (Xppm) is a concentration range of 100 to 999 ppm, the process proceeds to step S17. If the concentration (Xppm) is a concentration range of 1000 to 1999 ppm, the process proceeds to step S21, and the concentration (Xppm) is a concentration range of 2000 to 2500 ppm. If there is, the process proceeds to step S24.

濃度（Ｘｐｐｍ）が１００〜９９９ｐｐｍの濃度域のとき、ステップＳ１７で現在の検出濃度が濃度（Ｘｐｐｍ）以下であるかを判定し、濃度（Ｘｐｐｍ）以下であれば、ステップＳ１８で警報開始から６０秒経過したかを判定する。６０秒経過していなればばステップＳ１７の判定を繰り返す。６０秒経過していれば、ステップＳ２６で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ１２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ２７で警報を停止してステップＳ１１に戻る。   When the concentration (Xppm) is in the concentration range of 100 to 999 ppm, it is determined in step S17 whether the current detected concentration is equal to or lower than the concentration (Xppm). Determine if seconds have passed. If 60 seconds have not elapsed, the determination in step S17 is repeated. If 60 seconds have elapsed, it is determined in step S26 whether the detected concentration is equal to or lower than the alarm concentration. If it is not lower than the alarm concentration, the process proceeds to step S12 to continue generating the alarm, and if it is lower than the alarm concentration, the alarm is stopped in step S27 and the process returns to step S11.

ステップＳ１７で現在の検出濃度が濃度（Ｘｐｐｍ）以下でなければ、ステップＳ１９で現在の検出濃度を比較用の濃度（Ｘｐｐｍ）として設定し、ステップＳ２０で濃度（Ｘｐｐｍ）が何れの濃度域に有るかを判定する。濃度（Ｘｐｐｍ）が１０００〜１９９９ｐｐｍの範囲であればステップＳ２２に進み、濃度（Ｘｐｐｍ）が２０００〜２５００ｐｐｍの範囲であればステップＳ２５に進む。   If the current detected concentration is not less than the concentration (Xppm) in step S17, the current detected concentration is set as a comparative concentration (Xppm) in step S19, and the concentration (Xppm) is in any concentration region in step S20. Determine whether. If the concentration (Xppm) is in the range of 1000 to 1999 ppm, the process proceeds to step S22, and if the concentration (Xppm) is in the range of 2000 to 2500 ppm, the process proceeds to step S25.

ステップＳ１６で濃度（Ｘｐｐｍ）が１０００〜１９９９ｐｐｍの濃度域のとき、ステップＳ２１で現在の検出濃度が濃度（Ｘｐｐｍ）以下であるかを判定し、濃度（Ｘｐｐｍ）以下であれば、ステップＳ２２で警報開始から３０秒経過したかを判定する。３０秒経過していなければステップＳ２１の判定を繰り返す。３０秒経過していれば、ステップＳ２６で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ１２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ２７で警報を停止してステップＳ１１に戻る。ステップＳ２１で現在の検出濃度が濃度（Ｘｐｐｍ）以下でなければ、ステップＳ２３で現在の検出濃度を比較用の濃度（Ｘｐｐｍ）として設定し、ステップＳ２５に進む。   If the concentration (Xppm) is in the range of 1000 to 1999 ppm in step S16, it is determined in step S21 whether the current detected concentration is lower than the concentration (Xppm). If the concentration is lower than (Xppm), an alarm is issued in step S22. It is determined whether 30 seconds have passed since the start. If 30 seconds have not elapsed, the determination in step S21 is repeated. If 30 seconds have elapsed, it is determined in step S26 whether the detected concentration is equal to or lower than the alarm concentration. If it is not lower than the alarm concentration, the process proceeds to step S12 to continue generating the alarm, and if it is lower than the alarm concentration, the alarm is stopped in step S27 and the process returns to step S11. If the current detected concentration is not less than the concentration (Xppm) in step S21, the current detected concentration is set as a comparative concentration (Xppm) in step S23, and the process proceeds to step S25.

ステップＳ１６で濃度（Ｘｐｐｍ）が２０００〜２５００ｐｐｍの濃度域のとき、ステップＳ２４で現在の検出濃度が濃度（Ｘｐｐｍ）以下であるかを判定し、濃度（Ｘｐｐｍ）以下であれば、ステップＳ２５で警報開始から１０秒経過したかを判定する。１０秒経過していなればばステップＳ２５の判定を繰り返す。１０秒経過していれば、ステップＳ２６で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ１２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ２７で警報を停止してステップＳ１１に戻る。ステップＳ２４で現在の検出濃度が濃度（Ｘｐｐｍ）以下でなければ、ステップＳ１２で直ぐに警報を発生する。   When the concentration (Xppm) is in the concentration range of 2000 to 2500 ppm in step S16, it is determined in step S24 whether the current detected concentration is less than the concentration (Xppm). If the concentration is less than (Xppm), an alarm is issued in step S25. It is determined whether 10 seconds have passed since the start. If 10 seconds have not elapsed, the determination in step S25 is repeated. If 10 seconds have elapsed, it is determined in step S26 whether the detected concentration is equal to or lower than the alarm concentration. If it is not lower than the alarm concentration, the process proceeds to step S12 to continue generating the alarm, and if it is lower than the alarm concentration, the alarm is stopped in step S27 and the process returns to step S11. If the current detected concentration is not less than the concentration (Xppm) in step S24, an alarm is immediately generated in step S12.

以上のように、この第２参考例では、警報停止時の濃度（Ｘｐｐｍ）が、１００〜９９９ｐｐｍ、１０００〜１９９９ｐｐｍ、２０００〜２５００ｐｐｍの各濃度域の何れであるかを判定し、その濃度域に応じて６０秒の停止、３０秒の停止、１０秒の停止に切り替えられ、検出濃度が高いほど早く警報停止が中止され、警報が開始される。すなわち、警報停止時の検出濃度により警報停止時間（初期時間）が選択される。 As described above, in the second reference example, it is determined whether the concentration (Xppm) at the time of alarm stop is any of the concentration ranges of 100 to 999 ppm, 1000 to 1999 ppm, and 2000 to 2500 ppm. Accordingly, it is switched to a 60-second stop, a 30-second stop, and a 10-second stop. The higher the detected concentration, the earlier the alarm stop is stopped and the alarm is started. That is, the alarm stop time (initial time) is selected according to the detected concentration at the time of alarm stop.

なお、濃度（Ｘｐｐｍ）と検出濃度との比較時には、単純に濃度（Ｘｐｐｍ）と検出濃度の大小関係を比較するのではなく、ノイズ等により突発的に測定濃度が大きくなった場合を考慮して、濃度（Ｘｐｐｍ）よりＹｐｐｍ（設定値）以上高くなった場合に、測定濃度が高いと判定するとよい。   When comparing the concentration (Xppm) with the detected concentration, do not simply compare the relationship between the concentration (Xppm) and the detected concentration, but consider the case where the measured concentration suddenly increases due to noise or the like. When the concentration is higher than the concentration (Xppm) by Yppm (set value) or more, it may be determined that the measured concentration is high.

また、以上の第２参考例では、検出濃度の濃度域が３種類で、これに対応して警報停止時間（初期時間）が６０秒、３０秒、１０秒の３種類であるが、さらに多くの濃度域とそれに対応する警報停止時間としてもよい。また、警報停止時間の長さは検出濃度に応じて変化させてもよい。 Further, in the second reference example described above, there are three types of concentration ranges of the detected concentration, and the corresponding alarm stop time (initial time) is three types of 60 seconds, 30 seconds, and 10 seconds. It is good also as a warning stop time corresponding to the density | concentration area | region and it. Further, the length of the alarm stop time may be changed according to the detected concentration.

（第３参考例）図４は実施形態に係るＣＰＵ１１が実行する第３参考例の制御プログラムの要部フローチャートである。まず、ステップＳ３１で検出濃度が警報濃度以上になるのを監視する。検出濃度が警報濃度以上になると、ステップＳ３２で警報を発生してステップＳ３３に進む。ステップＳ３３では警報停止スイッチ３がＯＮとなっているかを判定し、ＯＮとなっていなければステップＳ３８に進み、ＯＮとなっていればステップＳ３４で警報を停止する。 (Third Reference Example ) FIG. 4 is a main part flowchart of a control program of a third reference example executed by the CPU 11 according to the embodiment. First, in step S31, it is monitored that the detected concentration becomes equal to or higher than the alarm concentration. If the detected concentration is equal to or higher than the alarm concentration, an alarm is generated in step S32 and the process proceeds to step S33. In step S33, it is determined whether the alarm stop switch 3 is ON. If not, the process proceeds to step S38, and if it is ON, the alarm is stopped in step S34.

次に、ステップＳ３５でＥＥＰＲＯＭ４から基準値（ａ）を読み出して比較用に設定し、ステップＳ３６で、検出濃度傾きが基準値（ａ）以下であるかを判定し、基準値（ａ）以下でなければステップＳ３２で直ぐに警報を発生する。基準値（ａ）以下であれば、ステップＳ３７で警報開始から５分経過しているかを判定し、５分経過していなればばステップＳ３６の判定を繰り返す。５分経過していれば、ステップＳ３８で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ３２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ３９で警報を停止してステップＳ３１に戻る。   Next, in step S35, the reference value (a) is read from the EEPROM 4 and set for comparison. In step S36, it is determined whether the detected density gradient is equal to or less than the reference value (a). If not, an alarm is immediately generated in step S32. If it is equal to or less than the reference value (a), it is determined in step S37 whether 5 minutes have elapsed since the start of the alarm. If 5 minutes have not elapsed, the determination in step S36 is repeated. If 5 minutes have elapsed, it is determined in step S38 whether the detected concentration is equal to or lower than the alarm concentration. If it is not lower than the alarm concentration, the process proceeds to step S32 to continue generating the alarm, and if it is lower than the alarm concentration, the alarm is stopped in step S39 and the process returns to step S31.

以上のように、この第３参考例では、ステップＳ３６及びステップＳ３２の処理により、警報停止中でも検出濃度（ＣＯ濃度）の検出濃度傾き、すなわち濃度変化量が基準値（ａ）（所定レベル）を超えていると直ぐに警報を発生する。 As described above, in the third reference example , the detected concentration gradient of the detected concentration (CO concentration), that is, the concentration change amount reaches the reference value (a) (predetermined level) by the processing in steps S36 and S32. If it exceeds, an alarm is generated immediately.

図５は実施形態に係るＣＰＵ１１が実行する実施例の制御プログラムの要部フローチャートである。なお、この実施例では、ＣＯ濃度の濃度変化量である検出濃度傾きの値の範囲を基準値（ａ，ｂ，ｃ）により３つの範囲に振り分ける。すなわち、検出濃度傾き≦基準値（ａ）の範囲、基準値（ａ）＜検出濃度傾き≦基準値（ｂ）の範囲（「ａ〜
ｂ」と書く）、基準値（ｂ）＜検出濃度傾き≦基準値（ｃ）の範囲（「ｂ〜ｃ」と書く）の、各範囲に振り分ける。 Figure 5 is a partial flow chart of a control program that embodiment be executed by the CPU11 according to the embodiment. In the embodiment of this, the reference value the range of values of the detected concentration gradient the concentration variation of CO concentration (a, b, c) by allocating the three ranges. That is, the detection density slope ≦ the range of the reference value (a), the reference value (a) <the detection density slope ≦ the range of the reference value (b) (“a˜
b)) and reference value (b) <detection density gradient ≦ reference value (c) range (written as “b to c”).

まず、ステップＳ４１で検出濃度が警報濃度以上になるのを監視する。検出濃度が警報濃度以上になると、ステップＳ４２で警報を発生してステップＳ４３に進む。ステップＳ４３では警報停止スイッチ３がＯＮとなっているかを判定し、ＯＮとなっていなければステップＳ５３に進み、ＯＮとなっていればステップＳ４４で警報を停止する。   First, in step S41, it is monitored that the detected concentration becomes equal to or higher than the alarm concentration. If the detected concentration is equal to or higher than the alarm concentration, an alarm is generated in step S42 and the process proceeds to step S43. In step S43, it is determined whether the alarm stop switch 3 is ON. If not, the process proceeds to step S53. If it is ON, the alarm is stopped in step S44.

次に、ステップＳ４５で検出濃度（Ｘｐｐｍ）が何れの濃度域に有るかを判定する。濃度（Ｘｐｐｍ）が１００〜９９９ｐｐｍの濃度域であればステップＳ４６に進み、濃度（Ｘｐｐｍ）が１０００〜１９９９ｐｐｍの濃度域であればステップＳ４９に進み、濃度（Ｘｐｐｍ）が２０００〜２５００ｐｐｍの濃度域であればステップＳ５１に進む。   Next, in step S45, it is determined in which concentration range the detected concentration (Xppm) is. If the concentration (Xppm) is a concentration range of 100 to 999 ppm, the process proceeds to step S46, and if the concentration (Xppm) is a concentration range of 1000 to 1999 ppm, the process proceeds to step S49, and the concentration (Xppm) is a concentration range of 2000 to 2500 ppm. If there is, the process proceeds to step S51.

濃度（Ｘｐｐｍ）が１００〜９９９ｐｐｍの濃度域のとき、ステップＳ４６で現在の検出濃度傾きが基準値（ａ）以下であるかを判定し、基準値（ａ）以下であれば、ステップＳ４７で警報開始から６０秒経過したかを判定する。６０秒経過していなればばステップＳ４６の判定を繰り返す。６０秒経過していれば、ステップＳ５３で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ４２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ５４で警報を停止してステップＳ４１に戻る。   When the concentration (Xppm) is in the concentration range of 100 to 999 ppm, it is determined in step S46 whether the current detected concentration gradient is equal to or less than the reference value (a), and if it is equal to or less than the reference value (a), an alarm is issued in step S47. It is determined whether 60 seconds have elapsed since the start. If 60 seconds have not elapsed, the determination in step S46 is repeated. If 60 seconds have elapsed, it is determined in step S53 whether the detected concentration is equal to or lower than the alarm concentration. If it is not less than the alarm concentration, the process proceeds to step S42 to continue generating the alarm, and if it is less than the alarm concentration, the alarm is stopped in step S54 and the process returns to step S41.

ステップＳ４６で現在の検出濃度傾きが基準値（ａ）以下でなければ、ステップＳ４８で現在の検出濃度傾きが何れの濃度傾きの範囲に有るかを判定する。検出濃度傾きがａ〜ｂの範囲であればステップＳ５０に進み、検出濃度傾きがｂ〜ｃの範囲であればステップＳ５２に進む。   If the current detected density gradient is not less than the reference value (a) in step S46, it is determined in step S48 which density gradient range the current detected density gradient is. If the detected density gradient is in the range of a to b, the process proceeds to step S50, and if the detected density gradient is in the range of bc, the process proceeds to step S52.

ステップＳ４５で検出濃度（Ｘｐｐｍ）が１０００〜１９９９ｐｐｍの濃度域のとき、ステップＳ４９で現在の検出濃度傾きが基準値（ｂ）以下であるかを判定し、基準値（ｂ）以下であれば、ステップＳ５０で警報開始から３０秒経過したかを判定する。３０秒経過していなればばステップＳ４９の判定を繰り返す。３０秒経過していれば、ステップＳ５３で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ４２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ５４で警報を停止してステップＳ４１に戻る。ステップＳ４９で現在の検出濃度傾きが基準値（ｂ）以下でなければ、ステップＳ５２に進む。   When the detected concentration (Xppm) is in the concentration range of 1000 to 1999 ppm in step S45, it is determined in step S49 whether the current detected concentration gradient is equal to or less than the reference value (b). In step S50, it is determined whether 30 seconds have elapsed from the start of the alarm. If 30 seconds have not elapsed, the determination in step S49 is repeated. If 30 seconds have elapsed, it is determined in step S53 whether the detected concentration is equal to or lower than the alarm concentration. If it is not less than the alarm concentration, the process proceeds to step S42 to continue generating the alarm, and if it is less than the alarm concentration, the alarm is stopped in step S54 and the process returns to step S41. If the current detected density gradient is not less than or equal to the reference value (b) in step S49, the process proceeds to step S52.

ステップＳ４５で検出濃度（Ｘｐｐｍ）が２０００〜２５００ｐｐｍの濃度域のとき、ステップＳ５１で現在の検出濃度傾きが基準値（ｃ）以下であるかを判定し、基準値（ｃ）以下であれば、ステップＳ５２で警報開始から１０秒経過したかを判定する。１０秒経過していなればばステップＳ５１の判定を繰り返す。１０秒経過していれば、ステップＳ５３で、検出濃度が警報濃度以下であるかを判定する。警報濃度以下でなければステップＳ４２に進んで警報の発生を持続し、警報濃度以下になっていれば、ステップＳ５４で警報を停止してステップＳ４１に戻る。ステップＳ５１で現在の検出濃度傾きが基準値（ｃ）以下でなければ、ステップＳ４２で直ぐに警報を発生する。   When the detected concentration (Xppm) is a concentration range of 2000 to 2500 ppm in step S45, it is determined in step S51 whether the current detected concentration gradient is equal to or less than the reference value (c). In step S52, it is determined whether 10 seconds have elapsed since the start of the alarm. If 10 seconds have not elapsed, the determination in step S51 is repeated. If 10 seconds have elapsed, it is determined in step S53 whether the detected concentration is equal to or lower than the alarm concentration. If it is not less than the alarm concentration, the process proceeds to step S42 to continue generating the alarm, and if it is less than the alarm concentration, the alarm is stopped in step S54 and the process returns to step S41. If the current detected density gradient is not less than the reference value (c) in step S51, an alarm is immediately generated in step S42.

以上のように、この実施例では、第２参考例と同様に、検出濃度が１００〜９９９ｐｐｍ、１０００〜１９９９ｐｐｍ、２０００〜２５００ｐｐｍの各濃度域の何れであるかに応じて、６０秒の停止、３０秒の停止、１０秒の停止に切り替えられ、検出濃度が高いほど早く警報停止が中止され、警報が開始される。また、検出濃度傾きが大きくなると、その基準値ａ〜ｂ、ｂ〜ｃの範囲に応じて３０秒の停止、１０秒の停止に切替えられる。 As described above, in the embodiment of this, similarly to the second reference example, the detected concentration is 100~999ppm, 1000~1999ppm, depending on whether the each concentration range of 2000～2500Ppm, stop for 60 seconds 30 seconds stop, 10 seconds stop, the higher the detected concentration, the earlier the alarm stop is stopped and the alarm is started. Further, when the detected density gradient increases, the stop is switched to 30 seconds or 10 seconds depending on the range of the reference values a to b and b to c.

以上の実施形態ではＣＯ濃度に関する警報について説明したが、他のガスを検出対象ガスとする場合でも同様である。   In the above embodiment, the alarm relating to the CO concentration has been described, but the same applies to the case where another gas is used as the detection target gas.

また、上記の実施形態はガス警報器の例であるが、火災にともなって発生する煙を煙センサで感知して警報する煙感知式火災警報器、熱を温度センサで感知して警報する熱感知式火災警報器等にも本発明を適用できる。この場合、煙の濃度、温度が本発明における「監視対象の物理量」に相当し、煙の濃度あるいは濃度変化量、温度あるいは温度変化量に応じて、実施形態におけるガス濃度あるいはガスの濃度変化量に応じた処理と同様な処理を行えばよい。この場合、判定対象とする所定レベルや濃度域あるいは温度域は、煙濃度あるいは温度に対応して適宜設定することはいうまでもない。   In addition, the above embodiment is an example of a gas alarm device. However, a smoke detection type fire alarm device which detects smoke generated by a fire with a smoke sensor and gives an alarm, and heat which detects heat with a temperature sensor and gives an alarm. The present invention can also be applied to a sensing fire alarm. In this case, the smoke concentration and temperature correspond to the “physical quantity to be monitored” in the present invention, and the gas concentration or gas concentration change amount in the embodiment according to the smoke concentration or concentration change amount, temperature or temperature change amount. The same processing as that according to the above may be performed. In this case, it goes without saying that the predetermined level, concentration range, or temperature range to be determined is appropriately set corresponding to the smoke concentration or temperature.

１ マイコン（警報停止手段、停止中監視手段）
２ センサ
３ 警報停止スイッチ 1 Microcomputer (alarm stop means, stop monitoring means)
2 Sensor 3 Alarm stop switch

Claims (2)

監視領域の雰囲気がもつ監視対象の物理量を検出するセンサを備え、該センサが検出した検出物理量が所定の警報レベルになると警報を発生する警報器であって、
警報停止スイッチの操作に応じて警報を停止する警報停止手段と、前記警報停止手段による警報停止中に前記センサの検出する検出物理量または該検出物理量の変化量を監視する停止中監視手段とを備え、
前記停止中監視手段は、前記警報停止手段による警報停止の開始時の検出物理量に応じて警報を再開させるまでの初期時間を選択し、
前記停止中監視手段は、前記初期時間及び警報停止中の検出物理量の変化量に応じて警報を再開させるまでの時間を変更することを特徴とする警報器。 An alarm device comprising a sensor for detecting a physical quantity to be monitored in the atmosphere of the monitoring area, and generating an alarm when the detected physical quantity detected by the sensor reaches a predetermined alarm level,
An alarm stop means for stopping an alarm in response to an operation of an alarm stop switch; and an in-stop monitoring means for monitoring a detected physical quantity detected by the sensor or an amount of change in the detected physical quantity while the alarm is stopped by the alarm stop means. ,
The during-stop monitoring means selects an initial time until the alarm is restarted according to the detected physical quantity at the start of the alarm stop by the alarm stop means,
The stop monitoring means changes the time until the alarm is restarted according to the initial time and the amount of change in the detected physical quantity during alarm stop. 請求項１に記載の警報器であって、
前記停止中監視手段は、前記警報停止中の検出物理量の変化量が予め設定された所定レベルを超えた場合に直ぐに警報を発生することを特徴とする警報器。
The alarm device according to claim 1 ,
It said stop being monitored means, alarm, characterized in that immediately generates alarm when the amount of change detection physical quantity in said alarm stop exceeds a predetermined level set in advance.
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