JP7066402B2 - Fire alarm system - Google Patents

Fire alarm system Download PDF

Info

Publication number
JP7066402B2
JP7066402B2 JP2017251011A JP2017251011A JP7066402B2 JP 7066402 B2 JP7066402 B2 JP 7066402B2 JP 2017251011 A JP2017251011 A JP 2017251011A JP 2017251011 A JP2017251011 A JP 2017251011A JP 7066402 B2 JP7066402 B2 JP 7066402B2
Authority
JP
Japan
Prior art keywords
fire
smoke
detector
threshold value
sensor
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.)
Active
Application number
JP2017251011A
Other languages
Japanese (ja)
Other versions
JP2019117508A (en
Inventor
智由 川添
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.)
Nohmi Bosai Ltd
Original Assignee
Nohmi Bosai 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 Nohmi Bosai Ltd filed Critical Nohmi Bosai Ltd
Priority to JP2017251011A priority Critical patent/JP7066402B2/en
Publication of JP2019117508A publication Critical patent/JP2019117508A/en
Priority to JP2022072628A priority patent/JP7265666B2/en
Application granted granted Critical
Publication of JP7066402B2 publication Critical patent/JP7066402B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Fire-Detection Mechanisms (AREA)
  • Fire Alarms (AREA)

Description

本発明は、分布型感知器と煙感知器を使用した火災報知設備に関するものである。 The present invention relates to a fire alarm system using a distributed detector and a smoke detector.

従来、工場や倉庫等の建物においては、発生した火災を感知するために火災報知設備が設けられている。火災報知設備に設置される感知器は、火災感知の方法によって熱感知器や煙感知器などがある。そして熱感知器には、感知器本体に達する熱を感知するスポット型感知器と、広い範囲の熱を感知する分布型感知器が存在している。 Conventionally, in buildings such as factories and warehouses, a fire alarm system is provided to detect a fire that has occurred. The detectors installed in the fire alarm system include heat detectors and smoke detectors depending on the method of fire detection. The heat detector includes a spot type detector that detects heat reaching the sensor body and a distributed type detector that detects heat in a wide range.

特開２０００－１３７８７５号公報Japanese Unexamined Patent Publication No. 2000-137875

従来の火災報知設備の感知器では、火災を早期に報知するために感度を上げようとすると非火災報が発生しやすくなるという問題があった。熱感知器の場合では、感度を上げると気象や空調機、調理器具等による温度や気圧の変化に反応して非火災報を生じてしまうという可能性があった。また煙感知器の場合、高感度とすることによりタバコの煙や粉塵等により非火災報が発生してしまうという問題があった。 The detector of the conventional fire alarm system has a problem that non-fire alarms are likely to occur when the sensitivity is increased in order to notify the fire at an early stage. In the case of heat detectors, if the sensitivity is increased, there is a possibility that non-fire alarms will be generated in response to changes in temperature and atmospheric pressure due to the weather, air conditioners, cooking utensils, and the like. Further, in the case of a smoke detector, there is a problem that a non-fire report is generated due to cigarette smoke, dust, etc. by increasing the sensitivity.

特許文献１には、熱センサが感知した温度の上昇率などにより煙感知の感度を変更して非火災報を防ぐ、熱感知器と煙感知器が一体となったマルチセンサタイプのスポット型感知器が記載されている。しかし、特許文献１の感知器は熱と煙を一つの感知器で検出して機能するものであり、感知器から離れた場所で火災が生じると、感知器で受熱できず、マルチセンサとしての機能が発揮できない可能性がある。 Patent Document 1 describes a multi-sensor type spot-type sensing in which a heat sensor and a smoke detector are integrated to prevent non-fire alarms by changing the sensitivity of smoke detection according to the rate of temperature rise detected by the heat sensor. The vessel is listed. However, the sensor of Patent Document 1 functions by detecting heat and smoke with one sensor, and if a fire occurs at a place away from the sensor, the sensor cannot receive heat and the sensor can be used as a multi-sensor. The function may not be exhibited.

そこで本発明は、非火災報を防ぎながら火災を確実に捉えて報知することができる火災報知設備を提供することを課題とするものである。 Therefore, it is an object of the present invention to provide a fire alarm system capable of reliably catching and notifying a fire while preventing non-fire alarms.

本発明は、上記の課題を解決するためのものであり、以下の構成を有する。 The present invention is for solving the above-mentioned problems, and has the following configurations.

（１）本発明は、監視区域に沿って敷設され周囲温度の上昇を検出する感熱部と、前記感熱部が接続される本体とを有する分布型感知器と、該分布型感知器と同じ前記監視区域に設けられ、煙を検出する煙感知器と、を備える火災報知設備であって、前記分布型感知器または前記煙感知器の一方に、火災と判断する第１閾値と、該第１閾値よりも低い第２閾値が設定され、該第２閾値を超える検出により、前記分布型感知器または前記煙感知器の他方の感度を上昇させることを特徴とする火災報知設備である。ここで、監視区域に沿った敷設とは、たとえば、監視区域が部屋の場合、部屋に敷設する場合のみならず、部屋の外の廊下に敷設する場合も含む。 (1) The present invention has a distributed sensor having a heat-sensitive unit laid along a monitoring area to detect an increase in ambient temperature and a main body to which the heat-sensitive unit is connected, and the same as the distributed sensor. A fire alarm system provided in a monitoring area and equipped with a smoke detector for detecting smoke, wherein a first threshold value for determining a fire and a first threshold value for determining one of the distributed detector and the smoke detector are provided. It is a fire alarm system characterized in that a second threshold value lower than the threshold value is set, and the sensitivity of the distributed detector or the other of the smoke detectors is increased by detection exceeding the second threshold value. Here, the laying along the monitoring area includes, for example, when the monitoring area is a room, not only the case of laying in the room but also the case of laying in the corridor outside the room.

（２）また、本発明は、前記一方の前記分布型感知器または前記煙感知器は、前記第２閾値を下回った検出により、前記他方の分布型感知器または前記煙感知器の感度を元に戻すことを特徴とする（１）に記載の火災報知設備である。 (2) Further, in the present invention, the one of the distributed detectors or the smoke detector is based on the sensitivity of the other distributed detector or the smoke detector by detecting below the second threshold value. The fire alarm system according to (1), which is characterized by returning to.

（３）また、本発明は、前記分布型感知器は、前記煙感知器と無線又は有線で接続され、前記分布型感知器の感熱部の検出に基づく信号を前記煙感知器に出力する、または前記煙感知器の煙センサ部の検出に基づく信号を前記分布型感知器に出力することを特徴とする（１）又は（２）に記載の火災報知設備である。 (3) Further, in the present invention, the distributed sensor is connected to the smoke sensor wirelessly or by wire, and outputs a signal based on the detection of the heat sensitive portion of the distributed sensor to the smoke sensor. Alternatively, the fire alarm system according to (1) or (2), characterized in that a signal based on the detection of the smoke sensor unit of the smoke detector is output to the distributed sensor.

本発明によれば、監視区域内の火災に対し、分布型感知器の熱の検出により煙感知器の感度を上昇させることで、非火災報を防ぐと共に、煙感知器から離れた場所で火災が発生した際に、煙感知器の周辺における煙の濃度が低い段階でも火災の予兆を捉えて早期の火災報知を実現することができる。また、煙感知器の煙の検出により分布型感知器の感度を高めることで、非火災報を防ぐと共に、煙が多く発生するような火災の種類の場合に、分布型感知器の周辺の温度が低い段階でも火災の予兆を捉えて早期の火災報知を実現することができる。即ち、広い範囲で検出する分布型感知器とスポット型感知器を協働させることにより、非火災報を防いだ早期の火災報知を実現することができる。 According to the present invention, for a fire in a monitored area, the sensitivity of the smoke detector is increased by detecting the heat of the distributed sensor to prevent non-fire alarms and to prevent a fire at a place away from the smoke detector. When a fire occurs, it is possible to catch a sign of a fire and realize an early fire notification even at a stage where the concentration of smoke around the smoke detector is low. In addition, by increasing the sensitivity of the distributed sensor by detecting smoke from the smoke detector, non-fire alarms can be prevented, and in the case of a type of fire that produces a lot of smoke, the temperature around the distributed sensor. Even at a low stage, it is possible to catch the signs of fire and realize early fire notification. That is, by linking the distributed type detector and the spot type detector that detect in a wide range, it is possible to realize an early fire notification that prevents non-fire alarms.

本発明の実施形態における火災報知設備１の構成を示す説明図である。It is explanatory drawing which shows the structure of the fire alarm system 1 in embodiment of this invention. 本発明の実施形態における火災報知設備１の監視区域５内での設置状態を示す設置概略図である。It is an installation schematic diagram which shows the installation state in the monitoring area 5 of the fire alarm system 1 in embodiment of this invention. 本発明の実施形態における差動式分布型感知器２および煙感知器３の動作を説明するフローチャートである。It is a flowchart explaining the operation of the differential distribution type detector 2 and the smoke detector 3 in embodiment of this invention. 本発明の実施形態における差動式分布型感知器２の空気管２１１内での圧力の変化と、火災報知のタイミングを示すグラフである。It is a graph which shows the change of the pressure in the air pipe 211 of the differential type distributed sensor 2 in the embodiment of this invention, and the timing of a fire alarm.

本発明は、広い範囲で熱を検出する分布型感知器とスポット型の煙感知器の間で通信を行わせ、監視区域内での火災発生時に早期の報知を行う火災報知設備である。以下、本発明を実施するための形態について説明する。 The present invention is a fire alarm system that communicates between a distributed sensor that detects heat in a wide range and a spot-type smoke detector, and provides early notification when a fire occurs in a monitored area. Hereinafter, embodiments for carrying out the present invention will be described.

図１は、本発明の実施形態における火災報知設備１の構成を示す説明図である。火災報知設備１は、複数の監視区域５に設置された空気管式の差動式分布型感知器２と、光電式スポット型感知器である煙感知器３、および各監視区域５からの火災の信号を受信する受信機４により構成される。各監視区域５内には、差動式分布型感知器２が１台設置され、さらに煙感知器３が１台から３台程度設置される。煙感知器３の設置台数は監視区域５内の広さ等の設置条件により異なるが、本実施形態において図１の上部に記載した監視区域５では２台の煙感知器３を設置している。 FIG. 1 is an explanatory diagram showing a configuration of a fire alarm system 1 according to an embodiment of the present invention. The fire alarm system 1 includes an air tube type differential distributed detector 2 installed in a plurality of monitoring areas 5, a smoke detector 3 which is a photoelectric spot type detector, and a fire from each monitoring area 5. It is composed of a receiver 4 that receives the signal of. In each monitoring area 5, one differential distribution type detector 2 is installed, and about one to three smoke detectors 3 are installed. The number of smoke detectors 3 installed varies depending on the installation conditions such as the size of the monitoring area 5, but in the present embodiment, two smoke detectors 3 are installed in the monitoring area 5 described in the upper part of FIG. ..

差動式分布型感知器２は感圧部２１、送受信部２２、送受信部２３を備える。感圧部２１は感熱部として機能し、空気管２１１と検出部２１２からなる。空気管２１１は細い金属のパイプであり、監視区域５の天井等に沿って敷設される。検出部２１２は空気管２１１の圧力上昇を検出することで空気管２１１の周囲温度が上昇していることを感知する。送受信部２２は、監視区域５内に設置された煙感知器３との間で、火災信号の受信、感度変更通知（火災予兆信号）の送信、煙感知器３の状態確認などの通信を無線で行う。送受信部２３は、差動式分布型感知器２と有線で接続された受信機４へ火災報知の信号を送信する。 The differential distributed sensor 2 includes a pressure sensitive unit 21, a transmission / reception unit 22, and a transmission / reception unit 23. The pressure-sensitive unit 21 functions as a heat-sensitive unit and includes an air pipe 211 and a detection unit 212. The air pipe 211 is a thin metal pipe and is laid along the ceiling or the like of the monitoring area 5. The detection unit 212 detects that the ambient temperature of the air pipe 211 has risen by detecting the pressure rise of the air pipe 211. The transmission / reception unit 22 wirelessly communicates with the smoke detector 3 installed in the monitoring area 5, such as receiving a fire signal, transmitting a sensitivity change notification (fire sign signal), and checking the status of the smoke detector 3. Do it at. The transmission / reception unit 23 transmits a fire notification signal to the receiver 4 connected to the differential distribution type detector 2 by wire.

煙感知器３は煙センサ部３１、送受信部３２を備える。煙センサ部３１は光電式のセンサであり、煙感知器内に流入した煙により散乱した光を光電素子で捉える。送受信部３２は、火災信号の送信、感度変更通知の受信、煙感知器３の状態の送信などの通信を、差動式分布型感知器２との間で無線により行う。煙感知器３による火災の報知は、差動式分布型感知器２を経由して受信機４に送信される。したがって、差動式分布型感知器２は煙感知器３の中継器としての役割も担っている。受信機４は差動式分布型感知器２と煙感知器３による火災信号を受信し、警報を報知する。 The smoke detector 3 includes a smoke sensor unit 31 and a transmission / reception unit 32. The smoke sensor unit 31 is a photoelectric sensor, and the light scattered by the smoke flowing into the smoke detector is captured by the photoelectric element. The transmission / reception unit 32 wirelessly communicates with the differential distribution type detector 2 such as transmission of a fire signal, reception of a sensitivity change notification, and transmission of the state of the smoke detector 3. The fire notification by the smoke detector 3 is transmitted to the receiver 4 via the differential distributed detector 2. Therefore, the differential distribution type detector 2 also plays a role as a repeater of the smoke detector 3. The receiver 4 receives a fire signal from the differential distributed detector 2 and the smoke detector 3 and notifies an alarm.

図２は、本発明の実施形態における火災報知設備１の監視区域５内での設置状態を示す設置概略図である。図２には監視区域５の天井等に沿って敷設された差動式分布型感知器２の空気管２１１と、空気管２１１に接続された差動式分布型感知器２の本体内の検出部２１２、および煙感知器３が示されている。監視区域５内では、差動式分布型感知器２と煙感知器３の間で無線による通信が行われる。 FIG. 2 is a schematic installation diagram showing an installation state of the fire alarm system 1 in the monitoring area 5 according to the embodiment of the present invention. FIG. 2 shows the detection inside the main body of the air pipe 211 of the differential distribution type detector 2 laid along the ceiling of the monitoring area 5 and the differential distribution type detector 2 connected to the air pipe 211. A section 212 and a smoke detector 3 are shown. Within the monitoring area 5, wireless communication is performed between the differential distribution type detector 2 and the smoke detector 3.

空気管２１１は天井等に広い範囲で敷設され、両端は検出部２１２に接続されている。差動式分布型感知器２では、火災による高温の空気が天井等に達して空気管２１１の周囲温度が急激に上昇した際には、管内部の空気の膨張による圧力が検出部２１２に伝わる。検出部２１２には空気管２１１内との圧力差により変位するダイヤフラム（図示せず）が内蔵され、ダイヤフラム上の接点により圧力上昇を検出する。ダイヤフラムは、空気管２１１内の圧力が第１圧力閾値（第１閾値）を超えたときに接触する火災判断用の第１接点に加え、第２圧力閾値（第２閾値）を超えたときに接触する感度変更用の第２接点を備える。 The air pipe 211 is laid in a wide range on the ceiling or the like, and both ends are connected to the detection unit 212. In the differential distribution type detector 2, when high temperature air due to a fire reaches the ceiling or the like and the ambient temperature of the air pipe 211 rises sharply, the pressure due to the expansion of the air inside the pipe is transmitted to the detection unit 212. .. The detection unit 212 has a built-in diaphragm (not shown) that is displaced due to the pressure difference from the inside of the air pipe 211, and detects a pressure rise by a contact on the diaphragm. The diaphragm is provided when the pressure in the air pipe 211 exceeds the first pressure threshold (first threshold), in addition to the first contact for fire determination, which comes into contact when the pressure exceeds the second pressure threshold (second threshold). It is provided with a second contact for changing the contact sensitivity.

第１圧力閾値は、火災と断定される空気管２１１内の圧力である。差動式分布型感知器２は、第１接点の接触を検出した場合、空気管２１１の圧力が第１圧力閾値を超えたと判断する。第２圧力閾値は第１圧力閾値よりも低く設定されるもので、火災の予兆を示す。第２接点の接触を検出した場合、差動式分布型感知器２は圧力が第２圧力閾値を超えたと判断する。一方、第２接点の接触が開放された場合には、空気管２１１内の圧力が第２圧力閾値を下回ったと判断する。 The first pressure threshold is the pressure in the air pipe 211 that is determined to be a fire. When the differential distribution type sensor 2 detects the contact of the first contact, it determines that the pressure of the air pipe 211 has exceeded the first pressure threshold value. The second pressure threshold is set lower than the first pressure threshold and indicates a sign of fire. When the contact of the second contact is detected, the differential distribution type sensor 2 determines that the pressure exceeds the second pressure threshold value. On the other hand, when the contact of the second contact is released, it is determined that the pressure in the air pipe 211 has fallen below the second pressure threshold value.

図２では、煙感知器３が２台設置され、設置されたそれぞれのスポットで火災による煙の有無を検出している。設置位置に到達した煙の濃度が上がり、煙センサ部３１の光電素子に届く散乱光が光量閾値を超えると、煙感知器３は、差動式分布型感知器２を介して受信機４に火災信号を出力する。 In FIG. 2, two smoke detectors 3 are installed, and the presence or absence of smoke due to a fire is detected at each of the installed spots. When the concentration of smoke that has reached the installation position increases and the scattered light that reaches the photoelectric element of the smoke sensor unit 31 exceeds the light amount threshold, the smoke detector 3 sends to the receiver 4 via the differential distributed sensor 2. Output a fire signal.

差動式分布型感知器２と各煙感知器３は、離れた設置位置で動作しながら無線により連携して火災を感知し、報知を行う。差動式分布型感知器２は煙感知器３から無線によって火災信号を受信し、受信機４に火災信号を出力する。煙感知器３は、第２圧力閾値を超える圧力を検出した差動式分布型感知器２から感度上昇の感度変更通知を受信すると、火災と判断する光量閾値を低くし、高感度化させる。煙感知の感度を上げると一般的には非火災報のリスクが上昇するが、差動式分布型感知器２で火災の予兆である第２圧力閾値を上回る程度の熱を感知してから煙感知の感度を上げているので、非火災報を発するリスクは抑えられる。 The differential distribution type detector 2 and each smoke detector 3 operate at distant installation positions and wirelessly cooperate to detect and notify a fire. The differential distributed detector 2 wirelessly receives a fire signal from the smoke detector 3 and outputs a fire signal to the receiver 4. When the smoke detector 3 receives the sensitivity change notification of the sensitivity increase from the differential distribution type detector 2 that detects the pressure exceeding the second pressure threshold value, the smoke detector 3 lowers the light amount threshold value determined to be a fire and raises the sensitivity. Increasing the sensitivity of smoke detection generally increases the risk of non-fire alarms, but the differential distributed sensor 2 detects heat that exceeds the second pressure threshold, which is a sign of fire, and then smokes. By increasing the sensitivity of sensing, the risk of issuing non-fire alarms is reduced.

なお、火災の位置や規模、遮蔽物の存在、火災の種類等によっては、差動式分布型感知器２の空気管２１１の周囲に熱が十分に伝わりにくい場合も考えられる。その際も煙感知器３が通常感度で煙の感知を行い、火災の報知を行うことができる。また同様に、火災の位置や規模、遮蔽物の存在、火災の種類等によっては煙感知器３に煙が到達しにくい場合も考えられる。その際も差動式分布型感知器２で第１圧力閾値を超えた圧力を検知することにより、火災の報知を行うことができる。差動式分布型感知器２と煙感知器３は、協働して火災を感知するだけでなく、それぞれ単独でも火災を感知することで熱と煙の二重の監視を行う。 Depending on the position and scale of the fire, the presence of a shield, the type of fire, etc., it may be difficult for heat to be sufficiently transferred around the air pipe 211 of the differential distribution type detector 2. Even in that case, the smoke detector 3 can detect the smoke with normal sensitivity and notify the fire. Similarly, it may be difficult for smoke to reach the smoke detector 3 depending on the position and scale of the fire, the presence of a shield, the type of fire, and the like. Even in that case, the fire can be notified by detecting the pressure exceeding the first pressure threshold value with the differential distributed sensor 2. The differential distribution type detector 2 and the smoke detector 3 not only detect a fire in cooperation with each other, but also detect a fire independently to perform double monitoring of heat and smoke.

次に、本発明の実施形態における火災報知設備１の動作処理について説明する。図３は、本発明の実施形態における差動式分布型感知器２および煙感知器３の動作を説明するフローチャートである。左側には差動式分布型感知器２の処理を、右側には煙感知器３の処理を記述している。 Next, the operation processing of the fire alarm system 1 according to the embodiment of the present invention will be described. FIG. 3 is a flowchart illustrating the operation of the differential distributed sensor 2 and the smoke detector 3 according to the embodiment of the present invention. The processing of the differential distribution type detector 2 is described on the left side, and the processing of the smoke detector 3 is described on the right side.

まず、差動式分布型感知器２による処理を以下に示す。この処理は、差動式分布型感知器２に設けられた制御装置により行われる。差動式分布型感知器２では、感圧部２１により空気管２１１の内部の圧力を検出する（Ｓ１０１）。検出は、空気管２１１の圧力により変位するダイヤフラムに備えられた接点の接触を、検出部２１２により電気的に検出することで行う。 First, the processing by the differential distribution type sensor 2 is shown below. This processing is performed by the control device provided in the differential distributed sensor 2. In the differential distribution type detector 2, the pressure inside the air pipe 211 is detected by the pressure sensitive unit 21 (S101). The detection is performed by electrically detecting the contact of the contacts provided in the diaphragm displaced by the pressure of the air pipe 211 by the detection unit 212.

空気管２１１の圧力が第１圧力閾値を超えると第１接点が接触し、その場合は火災と判断され（Ｓ１０２）、火災処理（Ｓ１０５）を行う。一方、第１圧力閾値を超えずに第１接点が接触していない場合は、火災の予兆を捉える圧力変化の有無の判断（Ｓ１０３）に移る。火災処理では、差動式分布型感知器２は送受信部２３を通して火災報知を受信機４へ送信する（Ｓ１０５）。火災と判断しなかった場合、第２圧力閾値をまたぐ圧力変化があるか否かの判断を行う（Ｓ１０３）。圧力が第２圧力閾値を超えて第２接点が接触した場合や、第２圧力閾値を下回って第２接点が離れた場合は感度変更通知（Ｓ１０４）の処理を行う。第２圧力閾値をまたぐ圧力変化がない場合は再び圧力検出（Ｓ１０１）に戻る。送受信部２２による感度変更通知は、検出部の検出に基づいて無線により煙感知器３へ出力する（Ｓ１０４）。このとき、第２圧力閾値を超えた場合は感度を上げる感度変更通知が、第２圧力閾値を下回った場合は感度を元に戻す感度変更通知が送信される。 When the pressure of the air pipe 211 exceeds the first pressure threshold value, the first contact contacts, and in that case, it is determined that there is a fire (S102), and fire treatment (S105) is performed. On the other hand, if the first contact is not in contact without exceeding the first pressure threshold value, the process proceeds to the determination of the presence or absence of a pressure change (S103) that catches a sign of fire. In fire processing, the differential distribution type detector 2 transmits a fire notification to the receiver 4 through the transmission / reception unit 23 (S105). If it is not determined to be a fire, it is determined whether or not there is a pressure change across the second pressure threshold value (S103). When the pressure exceeds the second pressure threshold and the second contact comes into contact, or when the pressure falls below the second pressure threshold and the second contact separates, the sensitivity change notification (S104) is processed. If there is no pressure change across the second pressure threshold value, the process returns to pressure detection (S101) again. The sensitivity change notification by the transmission / reception unit 22 is wirelessly output to the smoke detector 3 based on the detection of the detection unit (S104). At this time, when the second pressure threshold value is exceeded, a sensitivity change notification for increasing the sensitivity is transmitted, and when the second pressure threshold value is exceeded, a sensitivity change notification for returning the sensitivity is transmitted.

次に、煙感知器３による処理の手順を以下に示す。この処理は、煙感知器３に設けられた制御装置により行われる。煙感知器３は、流入した煙を煙センサ部３１により定期的に検出する（Ｓ２０１）。検出の際は、設定された光電素子の光量閾値に従って煙の有無を監視する。そして、煙の濃度による散乱光が光量閾値（煙の閾値に相当）を超えると、火災と判断する（Ｓ２０２）。 Next, the procedure of processing by the smoke detector 3 is shown below. This process is performed by a control device provided in the smoke detector 3. The smoke detector 3 periodically detects the inflowing smoke by the smoke sensor unit 31 (S201). At the time of detection, the presence or absence of smoke is monitored according to the set light amount threshold value of the photoelectric element. Then, when the scattered light due to the smoke concentration exceeds the light amount threshold value (corresponding to the smoke threshold value), it is determined as a fire (S202).

煙感知器３は、煙の濃度が煙の閾値を上回り火災と判断した場合、火災処理として送受信部３２により無線で火災信号を差動式分布型感知器２の送受信部２２へ出力する（Ｓ２０５）。そして、煙感知器３による火災信号を受信した差動式分布型感知器２は、送受信部２３により受信機４に火災信号を出力する。一方、火災と判断しなかった場合は、差動式分布型感知器２から感度変更通知を受信したか否かを判断する（Ｓ２０３）。感度変更通知のない場合は再び煙センサ部３１による煙検出（Ｓ２０１）に戻り、感度変更通知のあった場合は感度の変更を行う（Ｓ２０４）。 When the smoke concentration exceeds the smoke threshold and determines that the fire is a fire, the smoke detector 3 wirelessly outputs a fire signal to the transmission / reception unit 22 of the differential distribution type detector 2 by the transmission / reception unit 32 as fire processing (S205). ). Then, the differential distribution type detector 2 that has received the fire signal from the smoke detector 3 outputs the fire signal to the receiver 4 by the transmission / reception unit 23. On the other hand, if it is not determined to be a fire, it is determined whether or not the sensitivity change notification has been received from the differential distributed sensor 2 (S203). If there is no sensitivity change notification, the smoke sensor unit 31 returns to smoke detection (S201), and if there is a sensitivity change notification, the sensitivity is changed (S204).

差動式分布型感知器２から受信した感度変更通知が感度上昇の指示の場合は、煙センサ部３１の感度を上げる。即ち、煙センサ部３１で火災と判断する閾値を低くし、低濃度の煙で火災と判断できるようにする。受信した感度変更通知が感度を元に戻す指示の場合は、煙センサ部３１の感度を下げる。煙センサ部３１の閾値を元の値まで上げ、通常感度で煙の感知を継続する。本発明の実施形態である火災報知設備１は煙感知器を通常感度に戻すことで、一時的な高温により煙感知器が高感度になり続けて非火災報が発生してしまうことを防いでいる。
感度を変更した後は煙検出（Ｓ２０１）に戻り、新たな感度で煙の検出を行う。 When the sensitivity change notification received from the differential distribution type sensor 2 is an instruction to increase the sensitivity, the sensitivity of the smoke sensor unit 31 is increased. That is, the threshold value for determining a fire by the smoke sensor unit 31 is lowered so that a fire can be determined with low-concentration smoke. When the received sensitivity change notification is an instruction to restore the sensitivity, the sensitivity of the smoke sensor unit 31 is lowered. The threshold value of the smoke sensor unit 31 is raised to the original value, and smoke detection is continued with normal sensitivity. The fire alarm system 1 according to the embodiment of the present invention returns the smoke detector to the normal sensitivity, thereby preventing the smoke detector from becoming highly sensitive due to a temporary high temperature and generating a non-fire alarm. There is.
After changing the sensitivity, the process returns to smoke detection (S201), and smoke is detected with the new sensitivity.

図４は、本発明の実施形態における差動式分布型感知器２の空気管２１１での圧力の変化と、火災報知のタイミングを示すグラフである。縦軸は圧力、横軸は時間を表し、星印は火災報知を表す。火災発生時、火災による熱が到達した差動式分布型感知器２の空気管２１１の圧力は、図４のグラフのように時間をかけて上昇する。 FIG. 4 is a graph showing a change in pressure in the air pipe 211 of the differential distributed sensor 2 according to the embodiment of the present invention and the timing of fire notification. The vertical axis represents pressure, the horizontal axis represents time, and the asterisk represents fire alarm. When a fire occurs, the pressure of the air pipe 211 of the differential distributed sensor 2 to which the heat from the fire has reached rises over time as shown in the graph of FIG.

従来の差動式分布型感知器のみの構成では、第１圧力閾値に達したＡのタイミングで火災報知を受信機４に送信する。しかし本実施形態では、まず空気管２１１内部の圧力が第２圧力閾値を超えるＢのタイミングで、差動式分布型感知器２から監視区域５内の煙感知器３に感度を上昇させる感度変更通知を送信する。そして火災と判断する閾値を低く設定して感度が上がった煙感知器３は、Ｃのタイミングで火災報知する。Ｃのタイミングは火災の種類によっては、Ａよりも早いタイミングであり、同時に煙感知器３の通常感度による火災報知よりも早いタイミングである。このように差動式分布型感知器２と煙感知器３とが連携することで、早期の火災報知ができる。なお、ＣのタイミングがＡのタイミングより早い火災の種類としては、紙や段ボールが火種となる火災が挙げられる。このような火災では煙が少なく、本発明は特に有効である。 In the conventional configuration of only the differential distribution type detector, the fire alarm is transmitted to the receiver 4 at the timing of A when the first pressure threshold is reached. However, in the present embodiment, first, at the timing of B when the pressure inside the air pipe 211 exceeds the second pressure threshold value, the sensitivity is changed from the differential distribution type detector 2 to the smoke detector 3 in the monitoring area 5. Send a notification. Then, the smoke detector 3 whose sensitivity is increased by setting a low threshold value for determining a fire notifies the fire at the timing of C. Depending on the type of fire, the timing of C is earlier than that of A, and at the same time, the timing of C is earlier than the fire notification by the normal sensitivity of the smoke detector 3. By coordinating the differential distribution type detector 2 and the smoke detector 3 in this way, early fire notification can be performed. As a type of fire in which the timing of C is earlier than the timing of A, a fire in which paper or corrugated cardboard is the fire type can be mentioned. The present invention is particularly effective because there is little smoke in such a fire.

また、従来の差動式分布型感知器では、高感度にするために第１圧力閾値を別の値に下げて使用すると、気象状況や空調機等による気温や圧力の変化を捉えて非火災報を報知してしまう虞があった。本実施形態の火災報知設備１では、気象状況や空調機等による第２圧力閾値を超える変化を捉えた場合であっても、高感度状態に移行した煙感知器３は煙を感知しなければ火災報知せず、非火災報のリスクは抑えられる。一方、煙感知器３が高感度で火災を報知するのは、熱により空気管２１１の圧力が第２圧力閾値を超えて感度変更通知が発生している場合に限定されているため、煙草の煙等による非火災報のリスクも抑えられている。 In addition, in the conventional differential distribution type sensor, if the first pressure threshold value is lowered to another value and used in order to increase the sensitivity, the change in temperature and pressure due to weather conditions and air conditioners is captured and non-fire occurs. There was a risk of notifying the information. In the fire alarm system 1 of the present embodiment, even when a change exceeding the second pressure threshold due to a weather condition or an air conditioner is detected, the smoke detector 3 that has transitioned to the high sensitivity state must detect smoke. No fire alarm is given and the risk of non-fire alarms is reduced. On the other hand, the smoke detector 3 notifies the fire with high sensitivity only when the pressure of the air pipe 211 exceeds the second pressure threshold and the sensitivity change notification is generated. The risk of non-fire alarms due to smoke etc. is also suppressed.

なおＢのタイミングの後、煙センサ部３１が火災判断しなくても、差動式分布型感知器２は単独で火災報知を行う。煤成分の少ない可燃物による火災などで煙が煙センサ部３１に達しない、または十分な量になるまで時間がかかってしまう場合は、感度を上げた煙感知器３においても火災報知できない可能性がある。しかし煙感知器３からの火災報知を受信しない場合でも、差動式分布型感知器２は空気管２１１内部の圧力が第１閾値を超えたＡのタイミングで火災報知する。 After the timing of B, even if the smoke sensor unit 31 does not determine a fire, the differential distributed sensor 2 independently notifies the fire. If the smoke does not reach the smoke sensor unit 31 due to a fire caused by a combustible material with a small amount of soot, or if it takes time to reach a sufficient amount, there is a possibility that the smoke detector 3 with increased sensitivity cannot notify the fire. There is. However, even if the fire notification from the smoke detector 3 is not received, the differential distribution type detector 2 notifies the fire at the timing of A when the pressure inside the air pipe 211 exceeds the first threshold value.

また煙感知器３は、前述のようにＢのタイミングでの感度変更通知がある場合は蓄積時間を短くして高感度で煙を検出するが、差動式分布型感知器２に十分な熱が伝わらずに感度変更通知がない場合であっても、通常感度で煙の検出を行い火災報知する。よって、たとえば火災による熱の伝わりを阻害する遮蔽物があるなどして、差動式分布型感知器２の空気管２１１の周囲に熱が伝わらず第２閾値を超える圧力にならない場合であっても、煙感知器３のみにより火災判断されて火災報知が行われる。 Further, the smoke detector 3 detects smoke with high sensitivity by shortening the accumulation time when there is a sensitivity change notification at the timing of B as described above, but the heat is sufficient for the differential distribution type detector 2. Even if there is no sensitivity change notification without notification, smoke is detected with normal sensitivity and a fire is notified. Therefore, for example, there is a shield that hinders the transfer of heat due to a fire, so that the heat is not transferred around the air pipe 211 of the differential distribution type sensor 2 and the pressure does not exceed the second threshold value. However, the fire is determined only by the smoke detector 3 and the fire is notified.

以上のように、差動式分布型感知器２は広い範囲での熱の監視を、煙感知器３は設置されたスポットにおける煙の感知を行い、連携して非火災報を防ぎながら火災を報知する。また同時に、差動式分布型感知器２と煙感知器３が独立して二重に火災を感知することで、一方の感知器が作動し難い環境条件や火災の性質であっても、確実に火災の報知ができる。設置されたスポットで熱と煙が感知器に達することにより高感度の感知を行う従来のマルチセンサ型のスポット型感知器と比較して、広範囲の熱を感知できる差動式分布型感知器２を用いているため、確実で早期の火災報知ができる。さらに、差動式分布型感知器が既に備えられている施設においては、敷設された空気管を利用しつつ本体部分を交換し、無線式の煙感知器を設けるだけで非火災報を防止した高感度の火災報知を行うことができる。 As described above, the differential distribution type detector 2 monitors heat in a wide range, and the smoke detector 3 detects smoke at the installed spot, and cooperates to prevent non-fire alarms while causing a fire. Notify. At the same time, the differential distributed detector 2 and the smoke detector 3 independently and double detect the fire, so that even if one of the detectors is difficult to operate or the nature of the fire is reliable. You can notify the fire. Differential distribution type detector 2 that can detect a wide range of heat compared to the conventional multi-sensor type spot type detector that performs high-sensitivity detection by heat and smoke reaching the detector at the installed spot. Because it uses, it is possible to provide reliable and early fire notification. Furthermore, in facilities that are already equipped with differential distributed detectors, non-fire alarms were prevented by simply replacing the main body while using the laid air pipes and installing a wireless smoke detector. High-sensitivity fire notification can be performed.

＜変形例＞
差動式分布型感知器２の第１接点と第２接点は同じダイヤフラムに設けられても良く、空気管２１１に接続された異なるダイヤフラムに設けられても良い。検出部２１２はダイヤフラムと接点によるものでなく、他の圧力センサでもよい。また、差動式分布型感知器２は空気管式でなくてもよく、監視区域内に沿って線状に敷設する分布型感知器であれば熱電対式、熱半導体式や電子ケーブル式でもよい。熱電対式では監視区域５内に敷設した熱電対部に生じる起電力を測定して火災を判断するが、空気管式と同様に、起電力の大きさが第２閾値を超えた場合は煙感知器３に感度変更通知を送信し、第１閾値を超えた場合は火災判断により火災報知する。電気抵抗の変化を検出する熱半導体式の場合や、温度センサを有する電子ケーブルを敷設する電子ケーブル式も同様である。また熱を感知する感知器は、監視区域に沿って敷設して広い範囲の熱を感知する分布型感知器であれば、差動式でなくてもよい。 <Modification example>
The first contact and the second contact of the differential distributed sensor 2 may be provided in the same diaphragm, or may be provided in different diaphragms connected to the air pipe 211. The detection unit 212 is not based on the diaphragm and the contact point, but may be another pressure sensor. Further, the differential type distributed sensor 2 does not have to be an air tube type, and if it is a distributed type sensor laid linearly along the monitoring area, it may be a thermocouple type, a thermosemiconductor type or an electronic cable type. good. In the thermocouple type, a fire is judged by measuring the electromotive force generated in the thermocouple part laid in the monitoring area 5, but as in the air tube type, if the magnitude of the electromotive force exceeds the second threshold, smoke A sensitivity change notification is transmitted to the sensor 3, and if the first threshold value is exceeded, a fire is notified based on a fire judgment. The same applies to the thermal semiconductor type that detects changes in electrical resistance and the electronic cable type in which an electronic cable having a temperature sensor is laid. Further, the sensor that senses heat does not have to be a differential type as long as it is a distributed sensor that is laid along the monitoring area and senses heat over a wide range.

差動式分布型感知器２と煙感知器３間の通信は信号が送れればよく、無線でなく有線であってもよいし、有線と無線が混在していてもよい。差動式分布型感知器２と受信機４との間の通信も同様である。また、差動式分布型感知器２の感度変更通知は、監視区域５内の煙感知器３への送信に加えて、さらに隣接する監視区域や上下層階の監視区域の煙感知器３に対して送信するようにしてもよい。 Communication between the differential distribution type detector 2 and the smoke detector 3 may be wired instead of wireless, or may be a mixture of wired and wireless, as long as a signal can be transmitted. The same applies to the communication between the differential distributed sensor 2 and the receiver 4. Further, in addition to the transmission to the smoke detector 3 in the monitoring area 5, the sensitivity change notification of the differential distribution type detector 2 is sent to the smoke detector 3 in the adjacent monitoring area and the monitoring area on the upper and lower floors. It may be sent to.

上記の実施形態において、煙感知器３の感度変更は閾値の変更により行うが、煙感知器３に蓄積機能の設け、蓄積時間を短くすることで高感度にしても良い。なお、蓄積機能とは、散乱光の出力値が光量閾値を超えた後、すぐに火災信号を出力せずに、再度散乱光の出力値が光量閾値を超えたときに火災信号を出力するものである。煙感知器３の蓄積時間の処理は、当該煙感知器３の代わりに蓄積式中継器や受信機４を使用してもよい。また、差動式分布型感知器２に蓄積式中継器の役割を担わせてもよい。煙感知器３の煙検出を、蓄積式中継器等に送信し、設定された蓄積時間にわたって煙が検出され続けていることを煙感知器３から受信することで火災判断する。この場合、差動式分布型感知器２による感度変更の通知は蓄積処理を行う蓄積式中継器等に送信する。差動式分布型感知器２が蓄積処理を担う場合は、差動式分布型感知器２内で感度変更の処理を行う。煙感知器３の感度変更を蓄積時間以外によるものとしながら、同時に蓄積時間の処理に蓄積式中継器等を使用してもよい。その場合は感度変更の通知は、本発明の実施形態のように煙感知器３に対して送信する。 In the above embodiment, the sensitivity of the smoke detector 3 is changed by changing the threshold value, but the smoke detector 3 may be provided with a storage function and the storage time may be shortened to increase the sensitivity. The storage function does not output a fire signal immediately after the output value of scattered light exceeds the light amount threshold value, but outputs a fire signal when the output value of scattered light exceeds the light amount threshold value again. Is. For the processing of the accumulation time of the smoke detector 3, a storage type repeater or a receiver 4 may be used instead of the smoke detector 3. Further, the differential distribution type sensor 2 may play the role of a storage type repeater. The smoke detection of the smoke detector 3 is transmitted to a storage type repeater or the like, and a fire is determined by receiving from the smoke detector 3 that smoke continues to be detected for a set storage time. In this case, the notification of the sensitivity change by the differential distribution type sensor 2 is transmitted to the storage type repeater or the like that performs the storage processing. When the differential distribution type sensor 2 is responsible for the accumulation process, the sensitivity change process is performed in the differential distribution type sensor 2. A storage type repeater or the like may be used for processing the storage time while changing the sensitivity of the smoke detector 3 by a factor other than the storage time. In that case, the notification of the sensitivity change is transmitted to the smoke detector 3 as in the embodiment of the present invention.

また、煙感知器３の感度変更は、２段階以上あっても良い。例えば、差動式分布型感知器２に、第１の圧力閾値および第２の圧力閾値の間の値となるように第３の圧力閾値を設定し、第３の圧力閾値を超えたときには、第２の圧力閾値を超えたときよりも煙感知器３をより高感度化する。
なお、煙が多く発生するような火災の種類の場合、差動式分布型感知器２が第２の閾値に達するよりも前に煙感知器３が火災を検知することがある。その場合は、煙感知器に第２の閾値を設け、煙感知器の煙センサ部の検出した煙濃度が第２の閾値を超えたときに差動式分布型感知器の感度を高めても良い。そして、煙濃度が煙感知器の第２の閾値を下回ったときには差動式分布型感知器の感度を元に戻しても良い。 Further, the sensitivity of the smoke detector 3 may be changed in two or more steps. For example, in the differential distribution type sensor 2, a third pressure threshold value is set so as to be a value between the first pressure threshold value and the second pressure threshold value, and when the third pressure threshold value is exceeded, the pressure threshold value is exceeded. The smoke detector 3 is made more sensitive than when the second pressure threshold is exceeded.
In the case of a type of fire in which a large amount of smoke is generated, the smoke detector 3 may detect the fire before the differential distributed sensor 2 reaches the second threshold value. In that case, even if a second threshold value is set in the smoke detector and the sensitivity of the differential distributed sensor is increased when the smoke concentration detected by the smoke sensor unit of the smoke detector exceeds the second threshold value. good. Then, when the smoke concentration falls below the second threshold value of the smoke detector, the sensitivity of the differential distributed sensor may be restored.

１ 火災報知設備、
２ 差動式分布型感知器、
２１ 感圧部、
２１１ 空気管、
２１２ 検出部、
２２ 送受信部、
２３ 送受信部、
３ 煙感知器、
３１ 煙センサ部、
３２ 送受信部、
４ 受信機、
５ 監視区域 1 Fire alarm system,
2 Differential distributed sensor,
21 Pressure sensitive part,
211 air pipe,
212 detector,
22 Transmitter / receiver,
23 Transmitter / receiver,
3 Smoke detector,
31 Smoke sensor unit,
32 Transmitter / receiver,
4 receiver,
5 Monitoring area

Claims (3)

監視区域に沿って敷設され周囲温度の上昇を検出する感熱部と、前記感熱部が接続される本体とを有する分布型感知器と、
該分布型感知器と同じ前記監視区域に設けられ、煙を検出する煙感知器と、
を備える火災報知設備であって、
前記分布型感知器に、火災と判断する第１閾値と、該第１閾値よりも低い第２閾値が設定され、該第２閾値を超える検出により、前記煙感知器の感度を上昇させることを特徴とする火災報知設備。 A distributed sensor having a heat-sensitive unit laid along the monitoring area to detect an increase in ambient temperature and a main body to which the heat-sensitive unit is connected.
A smoke detector provided in the same monitoring area as the distributed sensor to detect smoke,
It is a fire alarm system equipped with
A first threshold value for determining a fire and a second threshold value lower than the first threshold value are set in the distributed sensor , and detection exceeding the second threshold value increases the sensitivity of the smoke detector. Characterized fire alarm system. 監視区域に沿って敷設され周囲温度の上昇を検出する感熱部と、前記感熱部が接続される本体とを有する分布型感知器と、
該分布型感知器と同じ前記監視区域に設けられ、煙を検出する煙感知器と、
を備える火災報知設備であって、
前記分布型感知器または前記煙感知器の一方に、火災と判断する第１閾値と、該第１閾値よりも低い第２閾値が設定され、該第２閾値を超える検出により、前記分布型感知器または前記煙感知器の他方の感度を上昇させ、
前記一方の前記分布型感知器または前記煙感知器は、前記第２閾値を下回った検出により、前記他方の前記分布型感知器または前記煙感知器の感度を元に戻すことを特徴とする火災報知設備。 A distributed sensor having a heat-sensitive unit laid along the monitoring area to detect an increase in ambient temperature and a main body to which the heat-sensitive unit is connected.
A smoke detector provided in the same monitoring area as the distributed sensor to detect smoke,
It is a fire alarm system equipped with
A first threshold value for determining a fire and a second threshold value lower than the first threshold value are set in either the distributed type detector or the smoke detector, and the distributed type sensing is performed by detection exceeding the second threshold value. Increase the sensitivity of the vessel or the other of the smoke detectors,
The fire is characterized in that one of the distributed detectors or the smoke detector restores the sensitivity of the other distributed detector or the smoke detector by detecting below the second threshold value. Disaster notification equipment. 前記分布型感知器は、前記煙感知器と無線又は有線で接続され、一方の感知器の検出に基づく信号を他方の感知器に出力する、ことを特徴とする請求項１又は２に記載の火災報知設備。 The distribution type sensor according to claim 1 or 2, wherein the distributed sensor is connected to the smoke detector wirelessly or by wire, and outputs a signal based on the detection of one sensor to the other sensor. Fire alarm system.
JP2017251011A 2017-12-27 2017-12-27 Fire alarm system Active JP7066402B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2017251011A JP7066402B2 (en) 2017-12-27 2017-12-27 Fire alarm system
JP2022072628A JP7265666B2 (en) 2017-12-27 2022-04-26 Fire alarm equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017251011A JP7066402B2 (en) 2017-12-27 2017-12-27 Fire alarm system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2022072628A Division JP7265666B2 (en) 2017-12-27 2022-04-26 Fire alarm equipment

Publications (2)

Publication Number Publication Date
JP2019117508A JP2019117508A (en) 2019-07-18
JP7066402B2 true JP7066402B2 (en) 2022-05-13

Family

ID=67305334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017251011A Active JP7066402B2 (en) 2017-12-27 2017-12-27 Fire alarm system

Country Status (1)

Country Link
JP (1) JP7066402B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111882807B (en) * 2020-06-22 2022-03-15 杭州后博科技有限公司 Method and system for identifying regional fire occurrence area

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000137876A (en) 1998-10-30 2000-05-16 Hochiki Corp Fire monitoring device and fire sensor
JP2001034863A (en) 1999-07-22 2001-02-09 Sumitomo Densetsu Corp Air blow-type fire alarm system
JP2002324280A (en) 2001-04-24 2002-11-08 Matsushita Electric Works Ltd Composite type fire sensor
JP2012190058A (en) 2011-03-08 2012-10-04 Sekisui House Ltd Fire alarm system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6292097A (en) * 1985-10-17 1987-04-27 ホーチキ株式会社 Smoke detector
JPS6381592A (en) * 1986-09-25 1988-04-12 松下電工株式会社 Automatic fire alarm system
JPH07120476B2 (en) * 1987-05-18 1995-12-20 ホーチキ株式会社 Fire determination device
EP0338218B1 (en) * 1988-03-30 1993-09-15 Cerberus Ag Early fire detection method
JP2904550B2 (en) * 1990-06-18 1999-06-14 株式会社日立製作所 Disaster prevention system
JPH0836681A (en) * 1994-07-25 1996-02-06 Nohmi Bosai Ltd Fire detection equipment using optical fiber
JPH11312286A (en) * 1998-04-30 1999-11-09 Matsushita Electric Works Ltd Composite sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000137876A (en) 1998-10-30 2000-05-16 Hochiki Corp Fire monitoring device and fire sensor
JP2001034863A (en) 1999-07-22 2001-02-09 Sumitomo Densetsu Corp Air blow-type fire alarm system
JP2002324280A (en) 2001-04-24 2002-11-08 Matsushita Electric Works Ltd Composite type fire sensor
JP2012190058A (en) 2011-03-08 2012-10-04 Sekisui House Ltd Fire alarm system

Also Published As

Publication number Publication date
JP2019117508A (en) 2019-07-18

Similar Documents

Publication Publication Date Title
US7804402B2 (en) Fire detectors with environmental data input
CN102870144A (en) Aspirating environmental sensor with webserver and email notification
KR101914554B1 (en) Control system using fire detection device based internet of small things
JP7066402B2 (en) Fire alarm system
KR101736048B1 (en) the residential fire detector
JP7265666B2 (en) Fire alarm equipment
JP6001870B2 (en) Alarm system
JP6430771B2 (en) Alarm system
KR101447714B1 (en) A fire perceiving robot, method for judging fire occurrence and fire alarm system using the same
KR20160093448A (en) Electronic fire detector by bluetooth ibeacon transmitter and receiving system
US11189146B2 (en) Fire detector having reset function linked with lamp and fire warning method using same
KR20000054323A (en) System monitoring Over-heat and therefor
KR20230105473A (en) Smoke sensor, operaion method of smoke sensor and fire alarm system
KR101357869B1 (en) Remote checking system for heat detector and device thereof
KR20120113378A (en) Wire and wireless disaster prevention system of ship
JP6046914B2 (en) Alarm system
KR20100032765A (en) The remote disaster management system using a cctv image
KR20120117534A (en) Wire and wireless disaster prevention system of ship with optical temperature sensor
KR102632385B1 (en) Apparatus for underground fire receiver integrated monitoring, system for underground fire receiver integrated monitoring and underground fire monitoring method using the same
JP6602035B2 (en) Detection device
KR102205998B1 (en) Intelligent system for preventing fire using ICT and method for preventing the same
JP6282039B2 (en) Alarm system
EP3848917B1 (en) Integrated fire alarm method and system
US20230264057A1 (en) Fire extinguishing devices with fire predicting function
JP2690317B2 (en) Fire alarm

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20201215

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20201215

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20210913

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20211005

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20211201

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220329

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220427

R150 Certificate of patent or registration of utility model

Ref document number: 7066402

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150