JPH0765250A - Sensitivity switching type glass braking sensor - Google Patents
Sensitivity switching type glass braking sensorInfo
- Publication number
- JPH0765250A JPH0765250A JP20783593A JP20783593A JPH0765250A JP H0765250 A JPH0765250 A JP H0765250A JP 20783593 A JP20783593 A JP 20783593A JP 20783593 A JP20783593 A JP 20783593A JP H0765250 A JPH0765250 A JP H0765250A
- Authority
- JP
- Japan
- Prior art keywords
- sensitivity
- sensor
- sound
- room
- sensitivity switching
- 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
Links
- 230000035945 sensitivity Effects 0.000 title claims abstract description 86
- 239000011521 glass Substances 0.000 title claims abstract description 41
- 238000010835 comparative analysis Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 9
- 230000006378 damage Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Burglar Alarm Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セキュリティシステム
における感度切換型ガラス破壊センサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensitivity switching type glass breakage sensor in a security system.
【０００２】[0002]
【従来の技術】セキュリティシステムにおいて、侵入者
による建造物のガラス窓破壊を検知するため、ガラス破
壊の際に生ずる衝撃音を検知するガラス破壊センサを設
置している。従来、この種のガラス破壊センサは、図４
に示すように二つの集音手段６１、６２によりピックア
ップされた周囲音を増幅手段７１、７２でそれぞれ増幅
し、比較分析手段１１にて音圧、周波数、振幅、時間幅
について比較分析し、ガラス破壊の際の衝撃音を検知し
た場合のみ警報出力手段１０により出力している。2. Description of the Related Art In a security system, a glass breakage sensor for detecting an impact sound generated at the time of glass breakage is installed in order to detect a glass window breakage of a building by an intruder. Conventionally, this type of glass breakage sensor is shown in FIG.
As shown in FIG. 2, the ambient sounds picked up by the two sound collecting means 61 and 62 are amplified by the amplifying means 71 and 72, respectively, and the comparative analysis means 11 compares and analyzes sound pressure, frequency, amplitude and time width, and The alarm output means 10 outputs only when the impact sound at the time of destruction is detected.
【０００３】[0003]
【発明が解決しようとする課題】ところが、この従来の
ガラス破壊センサは、室内に設置されているＯＡ機器の
プリンタ印字や、ブラインドの開閉の際に発生する音な
ど、ガラス破壊の際に発生する衝撃音と近似した音圧、
周波数、振幅、時間幅を持つ周囲音が原因で誤報が発生
し易かった。また、誤報を低減させるためにはガラス破
壊センサの感度を下げればこの問題は解決するものの、
感度を下げるとセンサの監視距離範囲が狭くなるため、
設置センサ数を増やさざるを得ず、設置工事の手間やコ
ストの増加を余儀なくされていた。However, this conventional glass breakage sensor is generated at the time of glass breakage such as a printer printing of an OA device installed indoors or a sound generated when a blind is opened or closed. Sound pressure similar to impact sound,
False alarms were more likely to occur due to ambient sounds with frequency, amplitude and duration. Also, in order to reduce false alarms, lowering the sensitivity of the glass breakage sensor solves this problem,
If the sensitivity is lowered, the monitoring distance range of the sensor becomes narrower.
There was no choice but to increase the number of installed sensors, which necessitated an increase in the labor and cost of installation work.
【０００４】[0004]
【課題を解決するための手段】本発明による感度切換型
ガラス破壊センサは、周囲音をピックアップする二つの
集音手段と、集音された周囲音をそれぞれ増幅する増幅
手段と、増幅された周囲音を音圧、周波数、振幅、時間
幅について比較分析を行う比較分析手段と、比較分析の
結果、前記周囲音がガラス破壊の際の衝撃音であると検
知された場合のみ警報する警報出力手段とから構成され
るガラス破壊センサにおいて、室内に人が在室している
場合と不在である場合とを識別する在室検知手段と、そ
れぞれの状態に応じて感度を設定する感度設定手段と、
在室検知手段における検知に従って前記感度設定手段に
よりセンサの感度設定を切り換える感度切換制御手段を
有することを特徴とする。SUMMARY OF THE INVENTION A sensitivity switching type glass breakage sensor according to the present invention comprises two sound collecting means for picking up ambient sound, an amplifying means for respectively amplifying the collected ambient sound, and an amplified ambient sound. Comparative analysis means for performing comparative analysis on sound in terms of sound pressure, frequency, amplitude and time width, and alarm output means for issuing an alarm only when the ambient sound is detected as an impact sound at the time of glass breaking as a result of the comparative analysis. In a glass breakage sensor composed of, an in-room detecting means for distinguishing between a case where a person is in the room and a case where the person is not in the room, and a sensitivity setting means for setting a sensitivity according to each state,
It is characterized by further comprising sensitivity switching control means for switching the sensitivity setting of the sensor by the sensitivity setting means in accordance with the detection by the presence detection means.
【０００５】また、本発明によるガラス破壊センサは、
室内に人が在室している時間帯を考慮して感度を設定す
る感度設定手段と、前記時間帯を考慮して予め設定した
時間になると感度切換信号を出力するタイマ手段と、こ
のタイマ手段の出力に応じて前記感度設定手段によりセ
ンサの感度設定を切り換える感度切換制御手段を有する
ことを特徴とする。Further, the glass breakage sensor according to the present invention is
Sensitivity setting means for setting the sensitivity in consideration of a time zone in which a person is present in the room, timer means for outputting a sensitivity switching signal at a preset time in consideration of the time zone, and this timer means It has a sensitivity switching control means for switching the sensitivity setting of the sensor by the sensitivity setting means according to the output of.
【０００６】[0006]
【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.
【０００７】図１は本発明の一実施例であるセキュリテ
ィシステムの構成図である。このセキュリティシステム
は、部屋３の少なくとも１つの面に形成されたガラス窓
１に感度切換型ガラス破壊センサ２が取り付けられ、ま
た、利用者の在室を検知する在室検知手段としてカード
リーダ４が設置され、ガラス破壊センサ２の感度切換の
制御及び、警報出力制御を警報盤５で統括管理してい
る。カードリーダ４で検知された信号は警報盤５によ
り、感度切換型ガラス破壊センサ２に送信され、感度切
換型ガラス破壊センサ２は感度を切り換える。また、感
度切換型ガラス破壊センサ２からの警報出力を警報盤５
は受信し、警報を発する。在室検知手段としてのカード
リーダ４は、パッシブセンサ、スイッチストライク、鍵
管理盤、カードスイッチ等でも良い。FIG. 1 is a block diagram of a security system according to an embodiment of the present invention. In this security system, a sensitivity switching type glass breakage sensor 2 is attached to a glass window 1 formed on at least one surface of a room 3, and a card reader 4 is used as an in-room detecting means for detecting the presence of a user. The alarm board 5 is installed to control the sensitivity switching of the glass breakage sensor 2 and the alarm output control. The signal detected by the card reader 4 is transmitted to the sensitivity switching type glass breakage sensor 2 by the alarm board 5, and the sensitivity switching type glass breakage sensor 2 switches the sensitivity. In addition, the alarm output from the sensitivity switching type glass breakage sensor 2 is sent to the alarm board 5
Receives and alerts. The card reader 4 as the occupancy detection means may be a passive sensor, a switch strike, a key management board, a card switch, or the like.
【０００８】次に図２により本発明の感度切換型ガラス
破壊センサの第１の実施例について説明する。２つの集
音手段６１、６２によりそれぞれピックアップされた周
囲音は、対応する増幅手段７１、７２により増幅され、
対応する感度設定手段８１、８２を介して比較分析手段
９に入力される。感度設定手段８１、８２は、部屋３に
人が在室かどうかを検知する在室検知手段１１における
検知に応じて、感度切換制御手段１２によりセンサ感度
の設定が切り換えられる。ここで、感度設定はガラス破
壊センサが設置された部屋３に人が在室の場合は、部屋
３の用途に応じて、室内のＯＡ機器のプリンタ印字や、
ブラインドの開閉で誤報が発生しない程度のセンサ感度
に設定しておき、部屋３に人が不在の場合は、誤報が発
生しないように在室時の場合に設定したセンサ感度より
も高めに設定しておく。また、この感度設定手段８１、
８２は比較分析手段９のしきい値を抵抗値を変えること
により設定する手段と、増幅手段７１、７２の増幅率を
変えることにより設定する手段のどちらでも良く、比較
分析手段９のしきい値を変える場合は感度設定手段８
１、８２は１つでも差し支えない。比較分析手段９は音
圧、周波数、振幅、時間幅について比較分析し、その結
果を警報出力手段１０へ送出する。警報出力手段１０に
はガラス破壊の際に発生する衝撃音であると検知した場
合のみ、警報出力を警報盤５（図１）へ出力する。かか
る構成において、利用者が部屋３に入室すると在室検知
手段１１により検知され、感度切換制御手段１２により
感度設定手段８１、８２が室内のＯＡ機器のプリンタ印
字や、ブラインドの開閉で誤報が発生しない程度のセン
サ感度に設定される。また、利用者が部屋３から退出す
ると在室検知手段１１により検知され、感度切換制御手
段１２により感度設定手段８１、８２が誤報が発生しな
いように在室時の場合に設定したセンサ感度よりも高め
に設定される。Next, referring to FIG. 2, a first embodiment of the sensitivity switching type glass breakage sensor of the present invention will be described. The ambient sound picked up by the two sound collecting means 61, 62 is amplified by the corresponding amplifying means 71, 72,
It is input to the comparative analysis means 9 via the corresponding sensitivity setting means 81, 82. In the sensitivity setting means 81 and 82, the sensitivity switching control means 12 switches the sensor sensitivity setting in accordance with the detection by the in-room detection means 11 which detects whether or not a person is present in the room 3. Here, when a person is present in the room 3 in which the glass breakage sensor is installed, the sensitivity is set according to the purpose of the room 3 by printing with a printer of an office automation device
The sensor sensitivity should be set so that false alarms will not occur when the blinds are opened and closed. If there are no people in room 3, set the sensor sensitivity higher than the sensor sensitivity set when the user is in the room to prevent false alarms. Keep it. In addition, the sensitivity setting means 81,
Reference numeral 82 may be either means for setting the threshold value of the comparative analysis means 9 by changing the resistance value or means for setting it by changing the amplification factors of the amplification means 71, 72. When changing the, sensitivity setting means 8
The number of 1, 82 may be one. The comparative analysis means 9 performs comparative analysis on the sound pressure, frequency, amplitude and time width, and sends the result to the alarm output means 10. The alarm output means 10 outputs an alarm output to the alarm panel 5 (FIG. 1) only when it is detected that it is an impact sound generated when the glass is broken. In such a configuration, when the user enters the room 3, the presence detection means 11 detects the presence, and the sensitivity switching control means 12 causes the sensitivity setting means 81, 82 to print an OA device in the room and print an erroneous message when the blind is opened or closed. The sensor sensitivity is set to a level that does not occur. Further, when the user exits the room 3, it is detected by the occupancy detection unit 11, and the sensitivity switching control unit 12 sets the sensitivity setting units 81 and 82 to be higher than the sensor sensitivity set when the user is in the room to prevent false alarms. It is set higher.
【０００９】次に図３により本発明の感度切換型ガラス
破壊センサの第２の実施例について説明する。２つの集
音手段６１、６２によりそれぞれピックアップされた周
囲音は、対応する増幅手段７１、７２により増幅され、
対応する感度設定手段８１、８２を介して比較分析手段
９に入力される。感度設定手段８１、８２は通常部屋３
に人が在室している時間帯を考慮して、時間帯に応じて
センサ感度が設定してある。この場合、在室時の時間帯
のセンサ感度の方が不在時の時間帯のセンサ感度よりも
低く設定しておく。設定しておいた時間になると感度切
換信号を出力するタイマ手段１３の出力に応じて、感度
切換制御手段１２により感度設定手段８１、８２はセン
サ感度が切り換えられる。比較分析手段９は音圧、周波
数、振幅、時間幅について比較分析し、その結果を警報
出力手段１０へ送出する。警報出力手段１０にはガラス
破壊の際に発生する衝撃音であると検知した場合のみ、
警報出力を警報盤５（図１）へ出力する。かかる構成に
おいて、部屋３の利用時間帯になると自動的にタイマ手
段１３より信号出力され、感度切換制御手段１２により
感度設定手段８１、８２は室内のＯＡ機器のプリンタ印
字や、ブラインドの開閉で誤報が発生しない程度のセン
サ感度に設定される。また、部屋３の利用時間帯が終了
すると自動的にタイマ手段１３より信号出力され、感度
切換制御手段１２により感度設定手段８１、８２は誤報
が発生しないように在室時の場合に設定したセンサ感度
よりも高めに設定される。ここでは部屋３が利用されて
いるかどうかの２段階にセンサ感度を設定したが、部屋
３の利用状況や、騒音状況に応じて複数段階にセンサ感
度を設定しても良い。Next, a second embodiment of the sensitivity switching type glass breakage sensor of the present invention will be described with reference to FIG. The ambient sound picked up by the two sound collecting means 61, 62 is amplified by the corresponding amplifying means 71, 72,
It is input to the comparative analysis means 9 via the corresponding sensitivity setting means 81, 82. The sensitivity setting means 81 and 82 are normally used in the room 3
The sensor sensitivity is set according to the time of day when people are in the room. In this case, the sensor sensitivity during the time when the user is in the room is set to be lower than the sensor sensitivity during the time when the user is not present. When the preset time comes, the sensitivity switching control means 12 switches the sensor sensitivity of the sensitivity setting means 81 and 82 according to the output of the timer means 13 which outputs the sensitivity switching signal. The comparative analysis means 9 performs comparative analysis on the sound pressure, frequency, amplitude and time width, and sends the result to the alarm output means 10. Only when it is detected that the alarm output means 10 is an impact sound generated when the glass is broken,
The alarm output is output to the alarm board 5 (Fig. 1). In such a configuration, the signal is automatically output from the timer means 13 when the room 3 is in use, and the sensitivity switching control means 12 causes the sensitivity setting means 81 and 82 to erroneously notify the printer of the OA equipment in the room or open or close the blinds. The sensor sensitivity is set to the level that does not occur. Further, when the use time zone of the room 3 ends, a signal is automatically output from the timer means 13, and the sensitivity switching control means 12 causes the sensitivity setting means 81 and 82 to set the sensors set when the user is in the room so that false alarms do not occur. It is set higher than the sensitivity. Here, the sensor sensitivity is set in two stages depending on whether or not the room 3 is used, but the sensor sensitivity may be set in a plurality of stages depending on the usage situation of the room 3 and the noise situation.
【００１０】[0010]
【発明の効果】以上説明したように本発明の感度切換型
ガラス破壊センサは、前記在室検知手段や、前記タイマ
手段と連動して、感度切り換えを行うことにより、従来
のガラス破壊センサで発生し易かったＯＡ機器のプリン
タ印字やブラインドの開閉による、ガラス破壊の際の衝
撃音に近似した音圧、周波数、振幅、時間幅を持つ衝撃
音が原因での誤報を、実用的な範囲内での感度の切り換
えで低減することができ、また、感度を大きく下げる必
要がないためセンサの監視距離範囲を狭くすることがな
くなり、設置センサ数を増やすことによる設置工事の手
間やコスト増を抑えるという効果を有する。As described above, the sensitivity switching type glass breakage sensor of the present invention is generated by the conventional glass breakage sensor by switching the sensitivity in cooperation with the presence detecting means and the timer means. Within a practical range, false alarms caused by impact sounds with sound pressure, frequency, amplitude, and time width similar to the impact sound at the time of glass breakage due to printer printing of OA equipment and opening / closing of blinds were easy to perform. The sensitivity can be reduced by switching the sensitivity, and since it is not necessary to significantly reduce the sensitivity, the monitoring distance range of the sensor is not narrowed, and the labor and cost of installation work can be suppressed by increasing the number of installed sensors. Have an effect.
【図１】本発明の感度切換型ガラス破壊センサを用いた
セキュリティシステムの一実施例を示す構成図。FIG. 1 is a configuration diagram showing an embodiment of a security system using a sensitivity switching type glass breakage sensor of the present invention.
【図２】感度切換型ガラス破壊センサの第１の実施例を
示すブロック図。FIG. 2 is a block diagram showing a first embodiment of a sensitivity switching type glass breakage sensor.
【図３】感度切換型ガラス破壊センサの第２の実施例を
示すブロック図。FIG. 3 is a block diagram showing a second embodiment of a sensitivity switching type glass breakage sensor.
【図４】従来のガラス破壊センサを示す構成図。FIG. 4 is a configuration diagram showing a conventional glass breakage sensor.
１ ガラス窓 ２ 感度切換型ガラス破壊センサ ３ 部屋 ４ カードリーダ ５ 警報盤 ６１、６２ 集音手段 ７１、７２ 増幅手段 ８１、８２ 感度設定手段 ９ 比較分析手段 １０ 警報出力手段 １１ 在室検知手段 １２ 感度切換制御手段 １３ タイマ手段 1 glass window 2 sensitivity switching type glass breakage sensor 3 room 4 card reader 5 alarm panel 61, 62 sound collecting means 71, 72 amplifying means 81, 82 sensitivity setting means 9 comparative analysis means 10 alarm output means 11 presence detecting means 12 sensitivity Switching control means 13 Timer means
Claims (3)
段と、前記二つの集音手段で集音された周囲音をそれぞ
れ増幅する増幅手段と、増幅された二つの周囲音につい
て比較分析を行う比較分析手段と、比較分析の結果、前
記周囲音がガラス破壊の際に発生する衝撃音であると検
知された場合のみ警報する警報出力手段とから構成され
るガラス破壊センサにおいて、感度を設定する感度設定
手段と、感度設定を切り換える感度切換制御手段とを具
備することを特徴とする感度切換型ガラス破壊センサ。1. Two sound collecting means for picking up ambient sound, an amplifying means for amplifying the ambient sound collected by the two sound collecting means, and a comparative analysis for the two amplified ambient sounds. The sensitivity is set in a glass breakage sensor including comparative analysis means and alarm output means for giving an alarm only when the ambient sound is detected as an impact sound generated at the time of glass breakage as a result of the comparative analysis. A sensitivity switching type glass breakage sensor comprising a sensitivity setting means and a sensitivity switching control means for switching the sensitivity setting.
を検知する在室検知手段における検知に対応して、感度
設定を切り換えることを特徴とする請求項１に記載の感
度切換型ガラス破壊センサ。2. The sensitivity switching type glass according to claim 1, wherein the sensitivity switching control means switches the sensitivity setting in response to the detection by the in-room detection means for detecting the presence of the user in the room. Destruction sensor.
時間になると感度切換信号を出力するタイマ手段の出力
に対応して、感度設定を切り換えることを特徴とする請
求項１に記載の感度切換型ガラス破壊センサ。3. The sensitivity switching according to claim 1, wherein the sensitivity switching control means switches the sensitivity setting in response to an output of a timer means which outputs a sensitivity switching signal at a preset time. Glass breakage sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20783593A JPH0765250A (en) | 1993-08-23 | 1993-08-23 | Sensitivity switching type glass braking sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20783593A JPH0765250A (en) | 1993-08-23 | 1993-08-23 | Sensitivity switching type glass braking sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0765250A true JPH0765250A (en) | 1995-03-10 |
Family
ID=16546314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20783593A Pending JPH0765250A (en) | 1993-08-23 | 1993-08-23 | Sensitivity switching type glass braking sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0765250A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005165693A (en) * | 2003-12-03 | 2005-06-23 | Gastar Corp | Crime prevention system |
| WO2007015451A1 (en) * | 2005-08-02 | 2007-02-08 | Optex Co., Ltd. | Intrusion detecting device having misreport reducing function |
| JP2008269497A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Electric Works Ltd | Crime prevention system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02116996A (en) * | 1988-10-26 | 1990-05-01 | Matsushita Electric Works Ltd | Wireless sensing system |
-
1993
- 1993-08-23 JP JP20783593A patent/JPH0765250A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02116996A (en) * | 1988-10-26 | 1990-05-01 | Matsushita Electric Works Ltd | Wireless sensing system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005165693A (en) * | 2003-12-03 | 2005-06-23 | Gastar Corp | Crime prevention system |
| WO2007015451A1 (en) * | 2005-08-02 | 2007-02-08 | Optex Co., Ltd. | Intrusion detecting device having misreport reducing function |
| JP2007041786A (en) * | 2005-08-02 | 2007-02-15 | Optex Co Ltd | Intrusion detection device with function of reducing false announcement |
| JP2008269497A (en) * | 2007-04-24 | 2008-11-06 | Matsushita Electric Works Ltd | Crime prevention system |
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| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19970401 |