JP4134831B2 - Locking device - Google Patents

Description

【００２１】
で与えられる。
【００２２】
ここで、ｋ＝ω／ｃ、ω＝２πｆは角周波数、ｃは音速であり空中ではおよそ３４０ｍ／ｓである。数式（１）ではｒはＯから平面波音源までの距離である。
【００２３】
また、Ｗ（ｎ）は各マイクロホン出力に重み付けをする場合の重み係数である。ここでは、全てのマイクロホンには重み付けをせず、Ｗ＝１とする。
従って、式（１）は
【００２４】
【数２】

【００２５】
のように計算できる。ここで、ｘ＝（ｋｄ／２）ｓｉｎθである。マイクロホンの指向性関数Ｄ_2N+1（θ）は最大値を１に規格化するのが通常であるので、
【００２６】
【数３】

と表示される。
【００２７】
例えば、Ｎ＝１、すなわち３個のマイクロホンを利用したとき、
【００２８】
【数４】

【００２９】
また、Ｎ＝２、すなわち５個のマイクロホンを利用したとき、
【００３０】
【数５】

【００３１】
を得る。
【００３２】
図１１は、ｆ＝３０ｋＨｚ、ｄ＝９ｍｍに設定したときの指向性である。太線が３素子の場合、細線が５素子の場合である。この結果から、個数の多い５素子のほうが指向性が鋭い。これは、マイクロホンアレーの長さが１８ｍｍから３６ｍｍに長くなっているためである。また、素子数が多いほど全体的にサイドローブが低くなる。このように素子数を増やせば指向性を鋭く、又、サイドローブを抑圧できるが、全体的に大きな開口のアレーになることから、システム全体で考えると、素子数を増やすことはあまり得策でない。素子間隔ｄの大きさをも考慮して検討するのが好ましい。
【００３３】
指向性において、振幅が１／２になる角度を指向角という。この角度をθｈとしたとき、３素子の場合
【００３４】
【数６】

【００３５】
となる。超音波領域ではｋｄ≫１になるので、
【００３６】
【数７】

【００３７】
と近似される。例えば、ｆ＝３０ｋＨｚ、ｄ＝９ｍｍにおいては、θｈ＝０．２６ｒａｄ＝１５°となる。この値は、図１０の計算結果と一致する。尚、音源からマイクロホンアレーまでの距離をＲとし、その距離がマイクロホンアレーの長さに較べて充分大きいとき、指向角θｈが覆う領域は、
【００３８】
【数８】

【００３９】
で与えられることになる。上記の例を採用すると、Ｒ＝２ｍでは、ａ＝５２ｃｍになる。すなわち、θ＝０の方向を中心として＋−５２ｃｍの領域にある音源信号を拾うことが出来る。このターゲット領域ａは、超音波周波数ｆが高くなるほど、また、素子間隔ｄが大きくなるほど狭くなる。
［実験例］
次に、エレクトレットコンデンサマイクロホン（以下ＥＣＭと略す）でアレーを試作した結果を示す。上記のＥＣＭは、一例として松下電器産業製ＷＭ-６４ＡＴであり、外形は６ｍｍである。このＥＣＭ自体は無指向性に近い特性を示すことが知られている。ここで３個のＥＣＭを横に並べた横型ＥＣＭアレーを構成する。ＥＣＭのそれぞれの間隔は９ｍｍに設定している。各ＥＣＭの出力信号は演算増幅器に加算入力し、その信号を２０／３．３≒６倍に増幅している。
【００４０】
超音波周波数帯域まで放射可能な音源（ツウィータ、パイオニア製ＰＴ−Ｒ９）を床から１ｍの高さに、又、音源から水平距離２ｍの位置にＥＣＭアレーを床から高さ１ｍの位置に設置し、音源から１５波のバースト波を放射する。周波数は２５ｋＨｚ、３０ｋＨｚ、４０ｋＨｚの３つとする。マイクロホンアレーを鉛直軸を中心に回転しながら指向性を測定した。
【００４１】
その測定結果を図１２に示す。左上の図１２（ａ）は２５ｋＨｚ、右上の図１２（ｂ）は３０ｋＨｚ、左下の図１２（ｃ）は４０ｋＨｚ、右下の図１２（ｄ）は２５ｋＨｚの指向性と４０ｋＨｚの指向性とを掛け合わせたデータである。各々の周波数に対する指向性において、全体的にサイドローブが大きく、このことは図１１に示した理論結果と傾向が似る。
【００４２】
ここで、理論と実験結果とを定量的に比較する。例えば、ｆ＝３０ｋＨｚのデータを比較したとき、図１１の理論ではθｈ＝１５°である。一方、実験では図１２（ｂ）から１３°である。実験結果のほうが多少狭くなっているが、ほぼ理論と一致する。
【００４３】
このように、無指向性マイクロホンをいくつか横に並べて横型アレーとし、これによって指向性のマイクロホンの構成が可能である。図１１の理論結果も、図１２の実験結果もサイドローブが比較的大きい。サイドローブのレベルが大きいことはターゲットとしている音源以外の音も拾う確率が高くなるが、サイドローブのレベルを極力低くすることで、所望の音源信号を取り出すことが出来る。このような所望の音源信号を取り出すことは、個々のマイクロホン素子の出力信号に重みを付けることで解決できる。但し、重みを付けると一般に指向性が広がる。図１３は各種重み付けをしたときの代表的な指向性パターンである。
【００４４】
以上述べたように、この監視方法においては、監視対象となる音の周波数の波長以下の配置間隔となるように複数の集音素子を直線状若しくは面状に配置する。この集音素子はマイクロホンであり、マイクロホンを直線状若しくは面状に配置してマイクロホンアレーを形成する。個々のマイクロホンの配置間隔は監視する音の周波数の波長以下とする。
【００４５】
監視対象となる音は検出対象となる特定の周波数の音である。複数のマイクロホンを直線状或いは面状に配置することは、監視対象領域にて発生する音の検出時間に時間的な遅れを設け、この時間的な遅れに基づいて監視対象領域の方向を定めるためである。即ち、配置間隔を監視対象となる音の周波数の波長以下に設定することにより、同一形状の１波長の波を各マイクロホンが検出する時期に時間的ずれ（遅延）が生じる。各マイクロホンが検出する音はほぼ同一の波形であるから、各マイクロホンの検出する音に位相的ずれがあっても各検出音の波の位相を揃えて総和をとることによって、ターゲットとなる特定の周波数の音を強調できる。また、各マイクロホンの検出値の総和により、マイクロホンアレーから所定方向に延びる監視対象領域を定めることができ、監視対象領域における特定周波数の音の発生を監視できる。
【００４６】
この監視方法によれば、複数の集音素子を音の周波数の波長以下の配置間隔によって配置し、検出した音の出力の遅延和により音の検出する指向性を強調して監視対象領域を定めるので、配置間隔を調整することにより、集音素子の音の監視対象領域に対して自由な三次元空間位置に定めることができると共に、狭い領域における特定の周波数の音を検出するために、監視領域外において特定の周波数の音が発生しても、誤報を生じる恐れがない。
［施錠装置］
次に、防犯装置の一例としての施錠装置に上述の監視装置を設けた事例を図面に基づいて説明する。
【００４７】
図１はこの実施の形態にかかる施錠装置の主要構成を平面的に示した図である。図２は施錠装置の側面構成を示す図、図３はサッシ戸に施錠装置を適用した状態の斜視図である。
【００４８】
本件実施の形態において、少なくとも一方が戸とされ、他方が戸又は戸口部の何れかとされる開閉装置の一例として図３に示す引き違い式のサッシ戸１Ｌ、１Ｒを挙げて説明するが、ヒンジドア、ショーケースのドア、ロッカーのドア、机の引出等に施錠装置を適用することも可能である。
【００４９】
図３において、引き違い式のサッシ戸１Ｌ，１Ｒの開閉動作領域はレール２，２の長手方向であり、サッシ戸１Ｌ，１Ｒのスライド方向である。勿論、ヒンジドアの場合は、ヒンジドアの回動方向となる。尚、このサッシ戸１Ｌ、１Ｒの縦框の中央部近傍にはクレセント錠Ｃｒが設けられており、施錠装置３はこのクレセント錠Ｃｒの補助錠とされており、サッシ戸１Ｌ、１Ｒの上部に取り付けられている。
【００５０】
施錠装置３は、施錠装置本体４と受け部材５及びカバーケースＣｃとからなる。さらに、施錠装置本体４は、図１、図３に示すように、ベース板６と第１支持板部７とデッドボルト８と駆動機構１０及び監視装置Ｄ並びにバッテリー（図示省略）を備える。カバーケースＣｃにはバッテリーと制御装置本体４とを断続するための解除ボタンＢが設けられている。
【００５１】
ベース板６はサッシ戸１Ｒの縦框部１Ａにネジ止めされるための取付穴６Ａを上下両端部に備えている。取付穴６Ａはベース板６の水平方向の位置調整のために縦框部１Ａの直交方向に延びる長穴とされており、傾斜状態の調節等も可能とされている。
【００５２】
ベース板６には第１支持板部７がボルト７Ｂにより取り付けられている。第１支持板部７は、デッドボルト８をスライド自在に保持するものであり、相対向する一対の縦板部７Ａと底板部が第１支持板部７のコの字形の断面形状を形成している。第１支持板部７の対向する一対の縦板部７Ａはデッドボルト８をスライド可能に保持する開口部８Ａを備えている。開口部８Ａは後述する第２突起部１２Ｂをスライド可能な形状を有している。
【００５３】
受け部材５は、サッシ戸１のガラスＧに両面粘着テープやネジ等の周知手段で取り付けられ、平板部５Ａとデッドボルト８の移動を規制するための施錠突起５Ｂを有する。施錠突起５Ｂは平板部５Ａの端部において略Ｌ字型形状に突出している。受け部材５の施錠突起５Ｂは、デッドボルト８が施錠突起５Ｂと平板部５Ａの隅角部に当接したときに、クレセント錠Ｃｒに加えてサッシ戸１Ｌ，１Ｒを二重に施錠状態とする。
【００５４】
デッドボルト８は、サッシ戸１Ｌ、１Ｒのスライド領域である開閉動作領域に出入可能とされ、受け部材５の施錠突起５Ｂ近傍の平板部５Ａに当接して一対のサッシ戸１Ｌ、１Ｒを施錠する。
【００５５】
デッドボルト８は、溝状の断面形状を有した金属（例えば鋼板、棒鋼等）からなり、図１に示すように、溝の内部にデッドボルト８と共に移動するホルダーケース１１と接触子１２とを保持している。デッドボルト８の溝内にコの字形断面を有する金属のホルダーケース１１が装着され、ホルダーケース１１内に接触子１２がホルダーケース１１の長手方向にスライド可能に保持されている。
【００５６】
図４，図５は接触子１２を示す。接触子１２はこの実施の形態ではプラスチックからなるものであり、接触子１２には受け部材５の平板部５Ａと接触するための第１突起部１２Ａと、施錠突起５Ｂと接触するための第２突起部１２Ｂとが形成されている。又、接触子１２には、第１突起部１２Ａが受け部材５或いはガラスＧに接触したときに信号を出力する第１接点１３と、第２突起部１２Ｂが施錠突起５Ｂに接触したときに信号を出力する第２接点１４とが設けられている。
【００５７】
エラーセンサは、第１突起部１２Ａと第１接点１３と後述する導通突起部２８Ａにより構成される。施錠センサは、第２突起部１２Ｂと第２接点１４と後述する導通突起部２８Ｂにより構成される。
【００５８】
接触子１２の凹部１７とホルダーケース１１の底部１１Ａの起立板部１８との間にはコイルスプリング１９が圧縮して配設されている。接触子１２は、コイルスプリング１９によってサッシ戸１側に向かって突出するように付勢されている。
【００５９】
接触子１２の先端部にはストッパー２０が形成されており、ストッパー２０はホルダーケース１１の開口部２１内を移動可能になっている。開口部１２の奥の縁部には起立板部２２が形成されており、起立板部２２はストッパー２０の戻りを規制できるようになっている。
【００６０】
図６，図７に示すように、接触子１２のサッシ戸１側の端部は第１突起部１２Ａとされており、第１突起部１２Ａの角部に第２突起部１２Ｂが突出して形成されている。第２突起部１２Ｂは接触子１２の上面部１２Ｃから突出している。第２突起部１２Ｂは前述のように第１支持板部７の開口部８Ａを通過可能とされている。
【００６１】
第１突起部１２Ａと第２突起部１２Ｂとの離間距離は、第２突起部１２Ｂが施錠突起５Ｂに押されたときに、第１突起部１２Ａがホルダーケース１１内部に埋没可能な深さとされている。
【００６２】
すなわち、第２突起部１２Ｂが施錠突起５Ｂに押されたことにより、施錠突起５Ｂと平板部５Ａの角部にデッドボルト８が位置し、適正に施錠されたことが検出可能となる。デッドボルト８がサッシ戸１Ｌ側に進出しても、第１突起部１２Ａがサッシ戸１Ｌに当たらなかったり、ガラスＧや平板部５Ａに当たっているときは、エラーとなる。
【００６３】
第１接点１３，第２接点１４は接触子１２の側面部には設けられている。この第１接点１３、第２接点１４はリード線２３Ａ、２３Ｂを介して制御装置としてのマイクロコンピュータ２４に接続されている。第１接点１３、第２接点１４は接触子１２の側面に設けられた凹部２５Ａ、２５Ｂ内部に軸止される可撓舌片２６Ａ、２６Ｂに取り付けられている。
【００６４】
可撓舌片２６Ａ、２６Ｂの自由端部間にはコイルスプリング２７が配設されている。可撓舌片２６Ａ、２６Ｂの自由端部は互いにホルダーケース１１の側壁部１１Ｂに向かって付勢されている。導通接点２２Ａ、２２Ｂは接触子１２の側面より僅かに内側に位置しており、通常時はホルダーケース１１と導通しないように保持されている。
【００６５】
ホルダーケース１１の側壁部１１Ｂにはそれぞれ導通突起部２８Ａ、２８Ｂがコの字形断面の内側に向かって突出している。接触子１２のスライド時の位置によって導通突起部２８Ａ、２８Ｂが第１接点１３、第２接点１４の何れか若しくは両者に接触して導通するようになっている。
【００６６】
導通突起部２８Ａ、２８Ｂの形成位置は、エラーセンサが導通した所定時間後に施錠センサが導通するように、ホルダーケース１１の長手方向に距離が設けられており、ホルダーケース１１から突出する第１突起部１２Ａの突出量と、第１突起部１２Ａから第２突起部１２Ｂまでの段差の距離だけ開けられている。
【００６７】
即ち、デッドボルト８が何も当たっていないとき、ホルダーケース１１の端部から第１突起部１２Ａが突出しており、このとき導通突起部２８Ａは第１接点１３に接触していないが、デッドボルト８がガラスＧか受け部材５の平板部５Ａに当たったとき、第１突起部１２Ａはホルダーケース１１の端部と同じ位置まで後退する。このとき、導通突起部２８Ａは第１接点１３に接触導通する。
【００６８】
また、デッドボルト８が受け部材５に当たり、接触子１２の第２突起部１２Ｂが施錠突起５Ｂに当たっているとき、第１突起部１２Ａはホルダーケース１１の内部に後退し、導通突起部２８Ａが第１接点１３に接触導通すると共に、導通突起部２８Ｂが第２接点１４に接触導通する。
【００６９】
この間の導通するための時間的ずれを形成するために、導通突起部２８Ａ、２８Ｂの接地位置が決められている。
【００７０】
ホルダーケース１１は、デッドボルト８と導通可能とされており、接地されている。マイクロコンピュータ２４は集中施錠装置からの施錠命令により前述のバッテリーから駆動電力を給電され、第１接点１３、第２接点１４と導通突起２８Ａ、２８Ｂとの接触により、導通状態を検出する。
【００７１】
マイクロコンピュータ２４は第１接点１３、第２接点１４の電圧のＨ，Ｌにより接触子１２が第１突起部１２Ａに当たっているか、第２突起部１２Ａに当たっているかを判断する。第１突起部１２Ａが受け部材５に当たっていなければ、エラーとし、第１突起部１２Ａがサッシ戸１のガラスＧ或いは平板部５Ａに当たっているときもエラーとする。第１突起部１２Ａが平板部５Ａに当たった後に、第２突起部１２Ｂが施錠突起５Ｂに当たったときは、正常に施錠されたとマイクロコンピュータ２４は判断する。
【００７２】
又、例えば、受け部材５に第１突起部１２Ａとデッドボルト８が進入できる孔だけが設けられている場合、第１突起部１２Ａが何も当たっていないにも拘わらず、第２突起部１２Ｂが施錠突起５Ｂに当たるという状態が生じる。この場合は、孔部分にデッドボルト８と第１突起部１２Ａが入り、孔の縁に第２突起部１２Ｂが接触すると、先ず第１接点１３が通電し、更にデッドボルト８は孔の先に進んでゆくために、続いて第２接点１４も通電することとなり、第１接点１３と第２接点１４の通電の時間差が生じ、マイクロコンピュータ２４は両者がそれぞれ通電することに基づいて正常施錠と判断する。マイクロコンピュータ２４は、解除ボタンＢの電源オフに基づき、モーター３０を逆転させて施錠状態を解除して停止する。
［駆動機構］
駆動機構１０は、デッドボルト８をサッシ戸１Ｌ，１Ｒがスライドする開閉動作領域に突出させるするように押し出すものであり、駆動源となるモーター３０と、ギア機構と、リンクレバー３２及び付勢手段としての弦巻バネ３４とを備えている。
【００７３】
モータ３０はＤＣモータであり、ベース板６の表面に固定されたベース３１に取り付けられている。ベース３１は例えば接着剤若しくはボルト等によりベース板６に固定されている。モータ３０は、マイクロコンピュータ２４の命令により制御される。マイクロコンピュータ２４は集中施錠装置からの施錠命令によりモーター３０を駆動する。又、マイクロコンピュータ２４がモーター３０を制御する手順は後述する。
【００７４】
上述の各種センサの状態に基づいて施錠状態を検出したり、エラー警報を出力する場合は、施錠装置に施錠完了用ＬＥＤ及びエラー警報用ＬＥＤを設けて、状態に対応させてそれぞれ点灯する。
【００７５】
尚、マイクロコンピュータ２４を図示しない無線通信機（携帯電話、ＰＨＳ電話、無線ＬＡＮカード等）を経由して集中施錠装置と接続し、集中施錠装置からの命令により施錠を行ったり、施錠状態を表示パネルに表示したり、施錠を解除しても良い。
【００７６】
ベース３１はギア機構を支持するための支持板部３５Ａ、３５Ｂを有している。支持板部３５Ａには軸３６が固定されている。軸３６にはギア３７が回転時材に保持されている。ギア３７は小口径のギア３７Ａと大口径のギア３７Ｂを二段にして一体に形成したものであり、大口径のギアにモータ３０の出力軸に取り付けられたギア３８が噛み合っている。
【００７７】
また、支持板部３５Ａ、３５Ｂ間には軸３９が回転自在に取り付けられている。軸３９の端部にはギア４０が固定されており、軸３９の中間部にはウォームギア４１が固定されている。３９Ａ、３９Ｂは軸３９の軸方向の位置ずれを防止するリングであり、４１Ａ、４１Ｂはウォームギア４１の軸方向の位置ずれを防止するリングである。
【００７８】
ウォームギア４１にはリンクレバー３２を駆動するギア４２が噛み合っている。ギア４２は固定軸４３に回転自在に支持されている。固定軸４３の根元部には段部４３Ａが形成されており、段部４３Ａがベース３１に当たっている。固定軸４３の根元部の中心には、図示しないボルトがねじ込まれており、固定軸４３はベース３１に固定されている。
【００７９】
リンクレバー３２に一体に形成されたリング４４には固定軸４３が通されており、リング４４は固定軸４３に対して回転自在とされている。リンクレバー３２の上には弦巻バネ３４が配置されている。弦巻バネ３４は固定軸４３に通されており、固定軸４３の周りを回動可能とされている。弦巻バネ３４の一方の端部はリンクレバー３２の片方の端部の穴３２Ａに掛けられており、弦巻バネ３４の他方の端部はギア４２の裏面に形成されたスペーサ部４４の突起４４Ａに掛けられている。
【００８０】
弦巻バネ３４は、駆動機構１０の動きをデッドボルト８に伝達する部位に設けられており、駆動機構１０がデッドボルト８を受け部材５側に移動させてデッドボルト８が受け部材５に当接したとき、その抵抗力に抗して駆動力を蓄積可能とされ、デッドボルト８を更に受け部材５側に付勢して押し当てることにより、サッシ戸１Ｌ，１Ｒの隙間拡大を解消する。又、デッドボルト８と受け部材５との間が狭くなった場合でも、付勢力により狭くなった分が吸収される。このように、隙間に大小が生じても付勢手段の付勢力により対応することが出来る。
【００８１】
この付勢手段は、弦巻バネ３４に構成されているが、他の手段、例えば、コイルスプリングや板バネ、ゴム等の弾性体であっても良い。
【００８２】
スペーサ部４４はギア４２に対して一体に固定されており、ギア４２の回転に伴って弦巻バネ３４を回転させるようになっている。弦巻バネ３４の回転はリンクレバー３２に伝達され、リンクレバー３２はデッドボルト８を押し出す。
【００８３】
リンクレバー３２の片方の端部には軸３２Ｂが突出するように設けられており、この軸３２Ｂがデッドボルト８の長穴８Ｂに移動可能に嵌め込まれている。リンクレバー３２の他方の端部にはベース３１側に向かって突出するストッパー部３２Ｃが形成されている。ストッパー部３２ＣはホームポジションセンサＨＰの接触片ＨＰ１を押し付けてホームポジションセンサＨＰをＯＮさせる。ベース３１にはストッパー部３２ＣがホームポジションセンサＨＰに当たったときに、リンクレバー３２を支えるストッパー部４５が立設されている。ホームポジションセンサＨＰは図示しないリード線を介してマイクロコンピュータ２４に接続されている。
【００８４】
駆動機構１０の駆動源であるモーター３０を制御する制御装置は、ベース３１上に配設されるマイクロコンピュータ２４により構成される。このマイクロコンピュータ２４は、デッドボルト８が受け部材５に向かって移動してから、第１突起部１２Ａが平板部５Ａに当たった後に、施錠センサの一部を構成する第２突起部１２Ｂが施錠突起５Ｂに当たったときは、正常に施錠されたと判断する。
【００８５】
マイクロコンピュータ２４は第２突起部１２Ｂが施錠突起５Ｂに当たって施錠を検出した後に、所定時間だけデッドボルト８を受け部材５に押し当てて付勢手段である弦巻バネ３４に付勢力を蓄積させる機能を有する。マイクロコンピュータ２４には、監視装置Ｄが接続されている。
［監視装置］
監視装置Ｄは施錠装置３のケース内のベース板６の上に取り付けられている。監視装置Ｄは、複数のマイクロホンと処理手段とを有する。複数のマイクロホンの配置間隔は監視対象にかかる音（ここではガラス破壊音）の周波数の波長以下に設定されている。処理手段は、複数のマイクロホンが検出する音の遅延和によって監視対象領域を定めると共に、監視する特定周波数のガラス破壊音の発生を監視する。
【００８６】
図９はこの監視装置Ｄのブロック図を示す。図９に示すように、監視装置Ｄは、複数の無指向性マイクロホンを並列的に配置したマイクロホンアレー部５０と、加算部５１と、増幅部５２と、信号処理部５３と、比較分析部５４と、情報出力部５５とを有する。
【００８７】
上述の処理手段は、加算部５１、増幅部５２、信号処理部５４、比較分析部５４並びに情報出力部５５で構成される。この実施の形態では防犯装置はスピーカ５６で構成される。
【００８８】
マイクロホンアレー部５０は、指向性を得るために、クレセント錠Ｃｒ近傍のガラス部に対して交差する方向に、複数個の小型の広帯域マイクロホンを線状、或いは、面状に並べたものである。指向特性の改善のために、各マイクロホンの出力信号に重みを付けること、又、不要な低周波或いは高周波の外部ノイズ除去のために簡易フィルタを付けることもある。マイクロホンの配置間隔は所望の指向角（マイクロホンアレー部５０が集音可能な領域を示す角度）を得るために調整可能とされる。
【００８９】
加算部５１は、各マイクロホンの出力信号を全て加算する部である。ここにおいては、上述のように各マイクロホン素子に適切な遅延時間を設定することにより、マイクロホンアレー部５０を動かさないで、指向性のメインローブのみを任意の方向に（主として音の発生方向）に向けることが出来る。
【００９０】
増幅部５２は、微少信号でも適切な大きさのレベルまで低ノイズで増幅できるようにするものである。
【００９１】
信号処理部５３は、監視対象となる発生音（ここではガラス破壊音）の周波数特性に合わせて、信号をフィルタリングすることで、その音特有の信号のみを取り出す処理部である。ここで、フィルタバンクを用いることで１周波数成分のみならず、複数の周波数成分を取り出し、それらのかけ算を行うことでより鋭い指向性のマイクロホンアレーセンサが得られる。
【００９２】
比較分析部５４は、コンパレータで構成され、音源が所望のガラス破壊音か否かを区別する。
【００９３】
情報出力部５５は、ガラスが破壊された場合に、即座にガラス破壊音をアナログ及びデジタル信号に変換し、マイクロコンピュータ２４及びスピーカに出力する出力部である。情報出力部５５にはスピーカ５６及びマイクロコンピュータ２４が接続されており、情報出力部５５がガラス破壊音の検出信号を出力したときに、スピーカ５５から警報音を発生したり、マイクロコンピュータ２４に出力する。
【００９４】
尚、スピーカ５６はマイクロコンピュータ２４に接続されていても良い。スピーカ５６がマイクロコンピュータ２４に接続されている場合には、情報出力部５５からガラス破壊信号がマイクロコンピュータ２４に出力されると、マイクロコンピュータ２４はスピーカ５６から警報音を発生するようにプログラムされる。
【００９５】
また、監視装置Ｄは、施錠装置３のケースの外側に設置して設けても良いし、施錠装置３から独立して設けられていても良い。施錠装置３の内部に設けられていれば、監視装置Ｄの監視領域の設定のために監視装置Ｄの位置調整等の手間がかからず、施錠装置３の無線通信機との接続により、警備会社や家主等への通報や連絡が容易である。施錠装置３から独立して設けられている場合には、監視領域を任意に定められるので、設置位置を室内の任意の壁面や空間に設置できることとなる。
［動作］
次に、施錠する場合の一連の動作を図８のタイミングチャートを用いて説明する。このタイミングチャートは正常の施錠したときの状態を示している。
【００９６】
先ず、建物の集中施錠装置から施錠命令を受信すると、モーター３０が正転してギア３８，３７Ｂ、３７Ａ、４０を介してウォームギア４１を回転させ、ギア４２を回転させる。ギア４２の回転により弦巻バネ３４が回転してリンクレバー３２がホームポジションから離れ、ホームポジションセンサＨＰがやや時間をおいてＬとなる。
【００９７】
モーター３０の正回転が継続されると、リンクレバー３２がデッドボルト８を受け部材５側に押し出す。デッドボルト８の第１突起部１２Ａが受け部材５の平板部５Ａに当たると、エラーセンサを構成する第１接点１３に導通突起２８Ａが接触して、第１接点１３と導通突起２８Ａとが導通する。第１接点１３と導通突起２８Ａとが導通した時点から所定時間（ガラスＧから受け金具５の突出する高さから生じる時間差）経過してから、施錠センサを構成する第２接点１４に導通突起２８Ｂとが接触して、第２接点１４と導通突起２８Ｂとが導通する。
【００９８】
この第１接点１３と導通突起２８Ａとの導通（Ｈ）と、第２接点１４と導通突起２８Ｂとの導通（Ｈ）との論理積が（Ｈ）となった後に、所定時間だけ経過した後に、第１接点１３と導通突起２８Ａへの給電と、第２接点１４と導通突起２８Ｂへの給電を停止する。また、第１接点１３と導通突起２８Ａとの導通（Ｈ）と、第２接点１４と導通突起２８Ｂとの導通（Ｈ）との論理積が（Ｈ）となった後に、所定時間（弦巻バネ３４にデッドボルト８を押し出す付勢力を蓄える時間）モーター３０を正転させる。
【００９９】
弦巻バネ３４にデッドボルト８の押出力を十分に蓄積させたら、モーター３０を停止させる。これによって、施錠状態が維持される。
【０１００】
前述の集中施錠装置から解錠命令が出力されたら、モーター３０を逆回転させ、ホームポジションセンサＨＰがオン（Ｈ）になって、ホームポジションセンサＨＰがオンを持続可能な安定状態まで少し時間をおいてから、モーター３０を停止させる。
【０１０１】
エラーのときには、エラーセンサを構成する第１接点１３と導通突起２８Ａとが接触しないか、若しくは、第２接点１４と導通突起２８Ａとが接触導通しても第２接点１４と導通突起２８Ｂとが接触しない状態となる。
【０１０２】
このエラーの場合には、無線通信機により集中施錠装置にエラーである旨を送信し、集中施錠装置はエラーを音、無線、表示装置により出力する。
【０１０３】
監視装置Ｄによる監視状態の開始は、監視状態に入る。監視中にはマイクロホンアレー部５０がクレセント錠Ｃｒ近傍のガラス部分を監視しており、監視解除により監視を停止する。
上述の監視装置Ｄは、デッドボルト８が施錠状態に入ってマイクロコンピュータ２４が正常な施錠と判断した直後に監視状態に入り、集中施錠装置からの施錠解除命令を受信するか、若しくは解除ボタンＢが押されると、監視状態が解除され、モーター３０を逆回転させてデッドボルト８の施錠状態が解除される。
【０１０４】
なお、集中施錠装置からの無線による施錠命令信号を受信して施錠を行う無線通信機は、トランシーバ、ネットワークカード、無線送受信器等を挙げることができる。
［効果］
上記の施錠装置は、サッシ戸１Ｒに設けられるベース板６と、ベース板６に装備され、サッシ戸１Ｌ、１Ｒの開閉動作領域に出入可能なデッドボルト８と、ベース板６に装備され、デッドボルト８をサッシ戸１Ｌ、１Ｒの開閉動作領域に突出させるするように押し出すための駆動機構１０と、サッシ戸１Ｌの他方に設けられ、駆動機構１０により突出したデッドボルト８を受けてサッシ戸１Ｌ、１Ｒの開放を規制する受け部材５とを備えた施錠装置３において、駆動機構１０にデッドボルト８が受け部材５に当接したときに、デッドボルト８を更に受け部材５側に付勢する弦巻バネ３４を設けたので、デッドボルト８が受け部材５とがサッシ戸１Ｌ，１Ｒを施錠しているときに、閉じているサッシ戸１Ｌ，１Ｒ同士が離れようとしても弦巻バネ３４（付勢部材）がデッドボルト８を受け部材５側に押し出すので、強制的に解錠されてしまうことが防止される。
【０１０５】
又、何らかの原因でサッシ戸１Ｌ、１Ｒ間が狭くなった場合でも、付勢手段の付勢力により狭くなった分を吸収できる。
【０１０６】
また、施錠装置４が施錠センサにより施錠の適否を検出できる。また、エラーセンサにより施錠のエラーをも検出できる。デッドボルト８が施錠センサとエラーセンサとを備えているときには、デッドボルト８の動きに伴って施錠の適否を的確且つ容易に検出できる。更に、施錠の適否を検出し、デッドボルト８を駆動する駆動機構１０をシンプルな構成とすることが出来、耐久性が向上すると共に低コストなものとすることが出来る。
【０１０７】
また、マイクロホンの配置間隔を調整することにより、自由な三次元空間において任意な位置にマイクロホンの監視対象領域を定めることができる。また、狭い監視対象領域において特定の周波数の音を検出するので、監視対象領域外において当該特定の周波数の音が発生しても、誤報を生じる恐れがない。更に、監視する音の周波数はガラスが損傷時に発する超音波であるので、ガラスを破って侵入する事態を監視できる。
【０１０８】
特に、サッシ戸のクレセント錠Ｃｒ近傍のガラス部分を監視可能な位置に監視装置Ｄを設けることにより、ガラスＧが損傷された時に、警報音の発生や警備施設への通報・通信を行ったり、画像を撮影するなどの処理を行うことができる。また、警報発生や通報のみならず、着色料等を散布したり、侵入しようとする者を捕獲する装置を作動させる等の防犯機能を備えても良い。
【０１０９】
【発明の効果】
本願の第１の監視方法によれば、複数の集音素子を音の周波数の波長以下の配置間隔によって配置し、検出した音の出力の遅延和により音の検出する指向性を強調して監視対象領域を定めるので、配置間隔を調整することにより、集音素子の音の監視対象領域に対して自由な三次元空間位置に定めることができると共に、狭い領域における特定の周波数の音を検出するために、監視領域外において特定の周波数の音が発生しても、誤報を生じる恐れがない。
【０１１０】
本願の第１の監視装置によれば、上述の監視方法と同様に、配置間隔を調整することにより、集音素子の音の監視対象領域に対して自由な三次元空間位置に定めることができる。また、狭い領域における特定の周波数の音を検出するために、監視領域外において特定の周波数の音が発生しても、誤報を生じる恐れがない。
【０１１１】
本願の第２の監視装置によれば、ガラスが破壊されたり、ガラス切り等でガラスに特有の超音波が発生したときに、この超音波を集音素子で検出できるので、特定の位置のガラス戸が破られたことが判明し、警報発生等の防犯装置を作動させることができる。
【０１１２】
本願の防犯装置によれば、監視装置がガラス戸の損傷時の超音波を検出したときに、警報音発生・通信・画像撮影・着色料散布・捕獲装置作動等を行うので、防犯機能が向上する。
【０１１３】
本願の第１の施錠装置によれば、ガラス戸の施錠を行うと共に施錠中のクレセント錠周りのガラス破壊も監視できるので、防犯機能が向上するのみならず、誤報も少なくできる。
【０１１４】
本願の第２の施錠装置によれば、上記の効果に加えて防犯機能が更に向上する。
【図面の簡単な説明】
【図１】本発明の実施の形態にかかる施錠装置本体の構成を示す平面図。
【図２】本発明の施錠装置本体の側面図。
【図３】開閉装置としてのサッシ戸に施錠装置を接地する状態を示す斜視図。
【図４】施錠装置の接触子の断面構成を示す図。
【図５】接触子とホルダーケースの導通接点及び導通突起部の配置状態を示す断面図。
【図６】デッドボルトとホルダーケース及び接触子の取付状態を示す斜視図。
【図７】（ａ）はデッドボルトがガラスに当たっていない状態の図、（ｂ）はデッドボルトが受け部材に当たってエラーとなっている状態の図、（ｃ）はデッドボルトの接触子が施錠突起に当たって正常な施錠状態となったいる状態図、（ｄ）はデッドボルトがガラスに当たってエラーとなったときの状態図。
【図８】本実施の形態の施錠装置のタイミングチャート。
【図９】本発明の実施の形態にかかる監視装置のブロック図。
【図１０】本発明の実施の形態にかかる監視方法の概念図。
【図１１】マイクロホンアレーの指向性を示す図。
【図１２】マイクロホンアレーの指向性のパターン図。
【図１３】重み付けをしたときの指向性のパターン図。
【符号の説明】
１Ｌ、１Ｒ サッシ戸（開閉装置）
３ 施錠装置
４ 施錠装置本体
５ 受け部材
８ デッドボルト
１０ 駆動機構
１２Ｂ 第２突起部（施錠センサ）
１４ 第２接点 （施錠センサ）
２８Ｂ 導通突起部（施錠センサ）
１２Ａ 第１突起部 （エラーセンサ）
１３ 第１接点（エラーセンサ）
２８Ａ 導通突起部（エラーセンサ）
２４ マイクロコンピュータ
３２ リンクレバー
３４ 弦巻バネ（付勢手段）
Ｃｒ クレセント錠
Ｂ 解除ボタン
Ｄ 監視装置
５０ マイクロホンアレー部
５１ 加算部
５２ 増幅部
５３ 信号処理部
５４ 比較分析部
５５ 情報出力部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a monitoring method, a monitoring device, and a security device that monitor the generation of sound of a predetermined frequency at a predetermined location.
[0002]
[Prior art]
Conventionally, as an example of a monitoring device, in order to detect unauthorized intrusion, many methods and methods for detecting sound waves or vibrations generated when glass is broken have been proposed and commercialized.
[0003]
For example, (1) a method for detecting vibrations that occur when glass breaks, and (2) a method for detecting high vibrations of 50 kHz to 100 kHz or more that occur when glass is broken with a contact-type sensor such as a piezoelectric sensor. .
[0004]
As a sensitivity switching type glass breakage sensor, as described later, a sensor that prevents false alarms caused by sounds at the time of printer printing or blind opening / closing of OA equipment is disclosed.
[0005]
This sensitivity-switching type glass breaking sensor has two sound collecting means for picking up ambient sounds, amplification means for amplifying the ambient sounds collected by the two sound collecting means, and two amplified ambient sounds. Comparing and analyzing means for performing comparative analysis, and alarm output means for giving an alarm only when the result of the comparative analysis indicates that the ambient sound is an impact sound at the time of glass breakage.
[0006]
Then, according to the signal from the means for detecting whether the user is present in the room where the sensor is installed, the sensitivity switching means switches to the sensitivity setting means for the presence time and the sensitivity setting means for the absence time, respectively. It is.
[0007]
This makes it possible to reduce false alarms that were likely to occur with conventional glass breakage sensors by switching the practical sensitivity, and it will not reduce the monitoring distance range of the sensor, increasing labor and cost by increasing the number of sensors installed. There is an effect to suppress.
[0008]
[Patent Document 1]
JP-A-7-65250 (paragraphs 0004 to 0008, FIGS. 1 and 2)
[0009]
[Problems to be solved by the invention]
However, the above-described method (1) has the disadvantage that it is necessary to install each glass sheet and that it operates even with vibrations struck by wind or balls. Further, in the case of the method (2), it is necessary to install every glass. Furthermore, there is a problem that the use of a highly directional microphone becomes expensive.
[0010]
In the method disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 7-65250, the user can set the sensitivity at the time of occupancy according to the signal from the means for detecting whether the occupant is present in the room where the sensor is installed. Since the sensitivity switching means switches to the means and absence sensitivity setting means, in order to switch the sensitivity depending on whether or not the user is in the room, if the user is not in the room, it still picks up sound other than the glass breaking sound and malfunctions It is possible to do.
[0011]
The present invention has been made paying attention to such a problem, and can be produced at a low cost, a monitoring method and a monitoring apparatus capable of detecting only a sound having a target frequency by defining a monitoring target region, and crime prevention. An object is to provide an apparatus.
[0012]
[Means for Solving the Problems]
  The invention of claim 1 includes a receiving member provided in one glass door, a locking device main body having a dead bolt provided in the other glass door or door portion and capable of moving forward and backward with respect to the receiving member, and the glass during locking. And a monitoring device for monitoring the glass of the door, and the locking device body is locked by advancing the dead bolt by a locking signal and engaging the receiving member, and retracting the dead bolt by a release signal. A locking device for releasing the lock,
  Providing the monitoring device in the locking device body;
  The monitoring device is in the direction of the glass part to be monitored of the glass door.Arranged in a direction intersecting the extending axisA plurality of sound collecting elements for detecting sound from the glass portion, and processing means for detecting ultrasonic waves generated when the glass is damaged based on signals output from the plurality of sound collecting elements,
  An informing means for informing when the processing means detects an ultrasonic wave is provided.
[0014]
  The invention of claim 2 is characterized in that the receiving member has a flat plate portion to be attached to the glass door, and a locking projection raised from the flat plate portion,
  The locking device main body is locked by advancing a dead bolt to bring the dead bolt into contact with the flat plate portion of the receiving member and bringing the dead bolt into contact with the locking projection,
  The dead bolt is provided with a contact that is relatively movable in the advancing and retreating direction, the contact is biased forward, and the tip of the contact is projected from the tip of the dead bolt by a predetermined length,
  When the dead bolt advances during locking, the contact is provided with a protrusion that abuts against the tip of the locking protrusion of the receiving member to retreat the contact relative to the dead bolt.
  A first sensor that detects that the contact has retracted relative to the dead bolt by the amount of protrusion of the tip of the contact; and the protrusion of the contact abuts the tip of the locking protrusion of the receiving member during locking; A second sensor for detecting that the contact has retracted from the dead bolt by a predetermined distance longer than the protruding amount is provided in the locking device body;
  When the deadbolt is advanced by a locking signal, the first , Only when a detection signal is output from the second sensor, the monitoring device is in a monitoring state for monitoring glass breakage.
[0016]
  According to a third aspect of the present invention, the informing means is the first , When a detection signal is not output from the second sensor, or when a detection signal is output only from the first sensor, a locking error is notified.
[0017]
  According to a fourth aspect of the present invention, there is provided a receiving member provided in one glass door, a locking device main body having a dead bolt provided in the other glass door or door portion and capable of moving forward and backward with respect to the receiving member, and the glass during locking. And a monitoring device for monitoring the glass of the door, and the locking device body is locked by advancing the dead bolt by a locking signal and engaging the receiving member, and retracting the dead bolt by a release signal. A locking device for releasing the lock,
  The receiving member has a hole through which the dead bolt can enter,
The locking device main body is locked by advancing the dead bolt to enter the hole of the receiving member,
  The deadbolt has a protrusion that can move in the advancing and retreating direction of the deadbolt and can contact the edge of the hole as the deadbolt enters the hole.
  The monitoring device is in a monitoring state in which the breakage of the glass is monitored on the basis of a detection signal provided from the contact point that is provided in the locking device body and energized by contact between the edge of the hole of the receiving member and the protrusion. It is characterized by that.
  According to a fifth aspect of the present invention, the monitoring device is arranged in a direction intersecting with an axis extending in the direction of the glass part to be monitored of the glass door, and detects a sound from the glass part. And processing means for detecting ultrasonic waves generated when the glass is damaged based on signals output from the plurality of sound collecting elements,
  An informing means for informing when the processing means detects an ultrasonic wave is provided.
  According to a sixth aspect of the present invention, the contact includes a first contact that is energized by contact between an edge of the hole of the receiving member and the protrusion, and the deadbolt is further provided after the energization of the first contact. A second contact that is energized by entering
  The monitoring device may be in the monitoring state by energizing the first contact and the second contact with a time difference.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a monitoring method, a monitoring device, a security device, and a locking device according to embodiments of the present invention will be described with reference to the drawings.
[Monitoring method]
As shown in FIG. 10, a plurality of omnidirectional microphones are arranged in a straight line to form a linear array. It is assumed that N elements are arranged on one side and N elements on the other side from the linear center O, and the number of microphone elements is 2N + 1. This number is an odd number here, but it may be an even number. Further, although the elements are arranged in a straight line, they may be arranged in a cross shape on a plane. The directivity pattern of the array in the case of a straight line has a wedge shape, and the directivity pattern of the array in the case of the latter cross has a three-dimensional shape with a wedge shape having a rectangular opening. Moreover, although the distance of each microphone shall be located in a line at equal intervals d, it does not need to stick to this and may be unequal intervals.
[0019]
It is assumed that a direction perpendicular to the x-axis direction in which the microphones are arranged is a z-axis, and a plane sound wave having an angle θ with respect to the z-axis is incident on the microphone. Let the frequency of this sound wave be f. When the electrical characteristics (for example, frequency characteristics) of the microphones are the same, a signal E obtained by adding up these output signals is:
[0020]
[Expression 1]

[0021]
Given in.
[0022]
Here, k = ω / c, ω = 2πf is the angular frequency, c is the speed of sound, and is about 340 m / s in the air. In Equation (1), r is the distance from O to the plane wave sound source.
[0023]
W (n) is a weighting coefficient when weighting each microphone output. Here, all microphones are not weighted and W = 1.
Therefore, equation (1) is
[0024]
[Expression 2]

[0025]
It can be calculated as follows. Here, x = (kd / 2) sin θ. Microphone directivity function D_{2N + 1}Since (θ) is usually normalized to a maximum value of 1,
[0026]
[Equation 3]

Is displayed.
[0027]
For example, when N = 1, that is, when three microphones are used,
[0028]
[Expression 4]

[0029]
N = 2, that is, when 5 microphones are used,
[0030]
[Equation 5]

[0031]
Get.
[0032]
FIG. 11 shows the directivity when f = 30 kHz and d = 9 mm. The case where the thick line is 3 elements and the thin line is 5 elements. From this result, the directivity of the five elements with a larger number is sharper. This is because the length of the microphone array is increased from 18 mm to 36 mm. In addition, the side lobe becomes lower as the number of elements increases. Increasing the number of elements can sharpen the directivity and suppress side lobes. However, since the entire array becomes a large aperture, it is not very advantageous to increase the number of elements in the entire system. It is preferable to consider the size of the element spacing d.
[0033]
In directivity, the angle at which the amplitude is halved is called the directivity angle. When this angle is θh, in case of 3 elements
[0034]
[Formula 6]

[0035]
It becomes. Since kd >> 1 in the ultrasonic region,
[0036]
[Expression 7]

[0037]
Is approximated by For example, when f = 30 kHz and d = 9 mm, θh = 0.26 rad = 15 °. This value agrees with the calculation result of FIG. When the distance from the sound source to the microphone array is R, and the distance is sufficiently larger than the length of the microphone array, the area covered by the directivity angle θh is
[0038]
[Equation 8]

[0039]
Will be given. When the above example is adopted, a = 52 cm when R = 2 m. That is, it is possible to pick up a sound source signal in the region of + −52 cm with the direction of θ = 0 as the center. The target area a becomes narrower as the ultrasonic frequency f becomes higher and the element interval d becomes larger.
[Experimental example]
Next, the result of trial manufacture of an array using an electret condenser microphone (hereinafter abbreviated as ECM) is shown. The above ECM is, for example, WM-64AT manufactured by Matsushita Electric Industrial Co., Ltd., and the outer shape is 6 mm. This ECM itself is known to exhibit characteristics close to omnidirectionality. Here, a horizontal ECM array in which three ECMs are arranged horizontally is configured. Each interval of the ECM is set to 9 mm. The output signal of each ECM is added and input to an operational amplifier, and the signal is amplified 20 / 3.3≈6 times.
[0040]
A sound source that can radiate up to the ultrasonic frequency band (Tweeter, Pioneer PT-R9) is placed at a height of 1 m from the floor, and an ECM array is placed at a height of 2 m from the sound source at a height of 1 m from the floor. , 15 burst waves are emitted from the sound source. There are three frequencies, 25 kHz, 30 kHz, and 40 kHz. The directivity was measured while rotating the microphone array around the vertical axis.
[0041]
The measurement results are shown in FIG. 12A in the upper left is 25 kHz, FIG. 12B in the upper right is 30 kHz, FIG. 12C in the lower left is 40 kHz, and FIG. 12D in the lower right shows the directivity of 25 kHz and 40 kHz. This is the multiplied data. In the directivity for each frequency, the side lobe is large as a whole, and this is similar in tendency to the theoretical result shown in FIG.
[0042]
Here, the theory and experimental results are compared quantitatively. For example, when comparing data at f = 30 kHz, θh = 15 ° in the theory of FIG. On the other hand, in the experiment, the angle is 13 ° from FIG. Although the experimental results are somewhat narrower, they are almost consistent with the theory.
[0043]
In this way, several omnidirectional microphones are arranged side by side to form a horizontal array, whereby a directional microphone can be configured. Both the theoretical result of FIG. 11 and the experimental result of FIG. 12 have relatively large side lobes. A large side lobe level increases the probability of picking up sounds other than the target sound source, but a desired sound source signal can be extracted by reducing the side lobe level as much as possible. Extracting such a desired sound source signal can be solved by weighting the output signals of the individual microphone elements. However, the directivity generally increases when weights are added. FIG. 13 shows typical directivity patterns when various weights are applied.
[0044]
As described above, in this monitoring method, a plurality of sound collection elements are arranged linearly or in a plane so as to have an arrangement interval equal to or smaller than the wavelength of the frequency of the sound to be monitored. The sound collection element is a microphone, and the microphones are arranged in a straight line or a plane to form a microphone array. The interval between the individual microphones should be less than the wavelength of the frequency of the sound to be monitored.
[0045]
The sound to be monitored is a sound having a specific frequency to be detected. Arranging a plurality of microphones in a straight line or a plane provides a time delay in the detection time of sound generated in the monitoring target area, and determines the direction of the monitoring target area based on this time delay. It is. That is, by setting the arrangement interval to be equal to or less than the wavelength of the sound frequency to be monitored, a time lag (delay) occurs at the time when each microphone detects a wave of one wavelength having the same shape. Since the sound detected by each microphone has almost the same waveform, even if there is a phase shift in the sound detected by each microphone, the phases of the detected sound waves are aligned and summed to obtain a specific target signal. Can emphasize frequency sound. In addition, a monitoring target area extending in a predetermined direction from the microphone array can be determined based on the sum of detection values of the microphones, and generation of sound of a specific frequency in the monitoring target area can be monitored.
[0046]
According to this monitoring method, a plurality of sound collecting elements are arranged with an arrangement interval equal to or less than the wavelength of the sound frequency, and the monitoring target region is defined by emphasizing the directivity of sound detection by the delay sum of the detected sound outputs. Therefore, by adjusting the arrangement interval, it is possible to determine a free three-dimensional spatial position with respect to the sound monitoring target region of the sound collecting element, and to detect sound of a specific frequency in a narrow region. Even if a sound of a specific frequency is generated outside the area, there is no risk of false alarms.
[Locking device]
Next, the example which provided the above-mentioned monitoring apparatus in the locking device as an example of a crime prevention apparatus is demonstrated based on drawing.
[0047]
FIG. 1 is a plan view showing the main configuration of the locking device according to this embodiment. FIG. 2 is a side view of the locking device, and FIG. 3 is a perspective view of the locking device applied to the sash door.
[0048]
In the present embodiment, the sliding door sash doors 1L and 1R shown in FIG. 3 will be described as an example of an opening / closing device in which at least one is a door and the other is either a door or a door portion. It is also possible to apply a locking device to a showcase door, a locker door, a desk drawer, or the like.
[0049]
In FIG. 3, the open / close operation region of the sliding sash doors 1L and 1R is the longitudinal direction of the rails 2 and 2, and the sliding direction of the sash doors 1L and 1R. Of course, in the case of a hinge door, it is the direction of rotation of the hinge door. A crescent lock Cr is provided in the vicinity of the center portion of the vertical shaft of the sash doors 1L, 1R, and the locking device 3 is an auxiliary lock of the crescent lock Cr, and is located above the sash doors 1L, 1R. It is attached.
[0050]
The locking device 3 includes a locking device body 4, a receiving member 5, and a cover case Cc. Furthermore, as shown in FIGS. 1 and 3, the locking device body 4 includes a base plate 6, a first support plate portion 7, a dead bolt 8, a drive mechanism 10, a monitoring device D, and a battery (not shown). The cover case Cc is provided with a release button B for connecting and disconnecting the battery and the control device main body 4.
[0051]
The base plate 6 includes mounting holes 6A at both upper and lower ends for screwing to the vertical flange 1A of the sash door 1R. The mounting hole 6A is a long hole extending in the orthogonal direction of the vertical flange portion 1A in order to adjust the position of the base plate 6 in the horizontal direction, and can be adjusted in an inclined state.
[0052]
A first support plate portion 7 is attached to the base plate 6 with bolts 7B. The first support plate portion 7 holds the dead bolt 8 slidably, and a pair of opposing vertical plate portions 7A and a bottom plate portion form a U-shaped cross-sectional shape of the first support plate portion 7. ing. A pair of opposing vertical plate portions 7A of the first support plate portion 7 includes an opening 8A that holds the dead bolt 8 so as to be slidable. The opening 8A has a shape capable of sliding a second protrusion 12B described later.
[0053]
The receiving member 5 is attached to the glass G of the sash door 1 by a known means such as a double-sided adhesive tape or a screw, and has a locking projection 5B for restricting the movement of the flat plate portion 5A and the dead bolt 8. The locking projection 5B protrudes in a substantially L shape at the end of the flat plate portion 5A. The locking projection 5B of the receiving member 5 double-locks the sash doors 1L and 1R in addition to the crescent lock Cr when the dead bolt 8 comes into contact with the locking projection 5B and the corner portion of the flat plate portion 5A. .
[0054]
The dead bolt 8 can be moved in and out of an opening / closing operation area which is a sliding area of the sash doors 1L and 1R, and abuts against the flat plate portion 5A in the vicinity of the locking projection 5B of the receiving member 5 to lock the pair of sash doors 1L and 1R. .
[0055]
The dead bolt 8 is made of a metal having a groove-like cross-sectional shape (for example, a steel plate, a steel bar, etc.). As shown in FIG. 1, a holder case 11 and a contact 12 that move together with the dead bolt 8 are provided inside the groove. keeping. A metal holder case 11 having a U-shaped cross section is mounted in the groove of the dead bolt 8, and a contact 12 is held in the holder case 11 so as to be slidable in the longitudinal direction of the holder case 11.
[0056]
4 and 5 show the contact 12. In this embodiment, the contact 12 is made of plastic. The contact 12 has a first protrusion 12A for contacting the flat plate portion 5A of the receiving member 5 and a second protrusion for contacting the locking protrusion 5B. A protrusion 12B is formed. The contact 12 has a first contact 13 that outputs a signal when the first protrusion 12A comes into contact with the receiving member 5 or the glass G, and a signal when the second protrusion 12B comes into contact with the locking protrusion 5B. And a second contact 14 for outputting.
[0057]
The error sensor includes the first protrusion 12A, the first contact 13, and a conduction protrusion 28A described later. The locking sensor includes the second protrusion 12B, the second contact 14, and a conduction protrusion 28B described later.
[0058]
A coil spring 19 is compressed and disposed between the concave portion 17 of the contact 12 and the upright plate portion 18 of the bottom portion 11 </ b> A of the holder case 11. The contact 12 is biased by a coil spring 19 so as to protrude toward the sash door 1 side.
[0059]
A stopper 20 is formed at the tip of the contact 12, and the stopper 20 can move within the opening 21 of the holder case 11. An upright plate portion 22 is formed at the inner edge of the opening 12, and the upright plate portion 22 can regulate the return of the stopper 20.
[0060]
As shown in FIGS. 6 and 7, the end of the contact 12 on the sash door 1 side is a first protrusion 12A, and the second protrusion 12B protrudes from the corner of the first protrusion 12A. Has been. The second protruding portion 12B protrudes from the upper surface portion 12C of the contact 12. The second projecting portion 12B can pass through the opening 8A of the first support plate portion 7 as described above.
[0061]
The distance between the first protrusion 12A and the second protrusion 12B is set to such a depth that the first protrusion 12A can be embedded in the holder case 11 when the second protrusion 12B is pressed by the locking protrusion 5B. ing.
[0062]
That is, when the second projection 12B is pushed by the locking projection 5B, it is possible to detect that the dead bolt 8 is positioned at the corner of the locking projection 5B and the flat plate portion 5A and is properly locked. Even if the dead bolt 8 advances to the sash door 1L side, an error occurs if the first projecting portion 12A does not hit the sash door 1L or hits the glass G or the flat plate portion 5A.
[0063]
The first contact 13 and the second contact 14 are provided on the side surface of the contact 12. The first contact 13 and the second contact 14 are connected to a microcomputer 24 as a control device via lead wires 23A and 23B. The first contact 13 and the second contact 14 are attached to flexible tongues 26 </ b> A and 26 </ b> B that are axially fixed inside recesses 25 </ b> A and 25 </ b> B provided on the side surfaces of the contact 12.
[0064]
A coil spring 27 is disposed between the free ends of the flexible tongues 26A and 26B. The free ends of the flexible tongues 26 </ b> A and 26 </ b> B are biased toward the side wall 11 </ b> B of the holder case 11. The conduction contacts 22A and 22B are located slightly inside the side surface of the contact 12, and are normally held so as not to conduct with the holder case 11.
[0065]
On the side wall portion 11B of the holder case 11, conductive protrusions 28A and 28B protrude toward the inside of the U-shaped cross section. Depending on the sliding position of the contact 12, the conduction protrusions 28 </ b> A and 28 </ b> B are brought into contact with one or both of the first contact 13 and the second contact 14 to be conducted.
[0066]
The conductive protrusions 28A and 28B are formed at a distance in the longitudinal direction of the holder case 11 so that the locking sensor is conductive after a predetermined time when the error sensor is conductive, and the first protrusion protruding from the holder case 11 is provided. The protruding amount of the portion 12A and the distance of the step from the first protruding portion 12A to the second protruding portion 12B are opened.
[0067]
That is, when nothing hits the dead bolt 8, the first protrusion 12A protrudes from the end of the holder case 11, and at this time, the conductive protrusion 28A does not contact the first contact 13, but the dead bolt When 8 hits the glass G or the flat plate portion 5 </ b> A of the receiving member 5, the first protrusion 12 </ b> A moves backward to the same position as the end of the holder case 11. At this time, the conductive protrusion 28 </ b> A is brought into contact with the first contact 13.
[0068]
When the dead bolt 8 hits the receiving member 5 and the second protrusion 12B of the contact 12 is in contact with the locking protrusion 5B, the first protrusion 12A is retracted into the holder case 11 and the conductive protrusion 28A is the first. The conductive protrusion 28 </ b> B is brought into contact with the second contact 14 while being brought into contact with the contact 13.
[0069]
In order to form a time lag for conduction during this period, the ground contact positions of the conduction protrusions 28A and 28B are determined.
[0070]
The holder case 11 can be electrically connected to the dead bolt 8 and is grounded. The microcomputer 24 is supplied with driving power from the battery in response to a locking command from the central locking device, and detects a conduction state by contact between the first contact 13 and the second contact 14 and the conduction protrusions 28A and 28B.
[0071]
The microcomputer 24 determines whether the contact 12 is in contact with the first projecting portion 12A or the second projecting portion 12A based on the voltages H and L of the first contact 13 and the second contact 14. If the first projecting portion 12A does not contact the receiving member 5, an error occurs, and if the first projecting portion 12A contacts the glass G or the flat plate portion 5A of the sash door 1, an error also occurs. When the second projection 12B hits the locking projection 5B after the first projection 12A hits the flat plate portion 5A, the microcomputer 24 determines that the locking is normally performed.
[0072]
  Further, for example, the first protrusion 12A and the dead bolt 8 are provided on the receiving member 5.ApproachWhen only the hole which can be formed is provided, the state where the 2nd projection part 12B contacts the lock | rock projection 5B arises, although the 1st projection part 12A has not contacted anything. In this case, when the dead bolt 8 and the first projecting portion 12A enter the hole portion and the second projecting portion 12B comes into contact with the edge of the hole, the first contact 13 is first energized, and the dead bolt 8 is further at the tip of the hole. In order to proceed, the second contact 14 is also energized, resulting in a time difference between the energization of the first contact 13 and the second contact 14, and the microcomputer 24 is normally locked based on the energization of both. to decide. Based on the power-off of the release button B, the microcomputer 24 reverses the motor 30 to release the locked state and stops.
[Drive mechanism]
  The drive mechanism 10 pushes out the dead bolt 8 so as to protrude into an opening / closing operation region where the sash doors 1L and 1R slide, and includes a motor 30 as a drive source, a gear mechanism, a link lever 32, and an urging means. As a string spring 34.
[0073]
The motor 30 is a DC motor and is attached to a base 31 fixed to the surface of the base plate 6. The base 31 is fixed to the base plate 6 with, for example, an adhesive or a bolt. The motor 30 is controlled by instructions from the microcomputer 24. The microcomputer 24 drives the motor 30 in accordance with a locking command from the central locking device. The procedure for the microcomputer 24 to control the motor 30 will be described later.
[0074]
When detecting the locked state based on the state of the various sensors described above or outputting an error alarm, the locking device is provided with a locking completion LED and an error alarm LED, and lights up in accordance with the state.
[0075]
The microcomputer 24 is connected to a central locking device via a wireless communication device (mobile phone, PHS phone, wireless LAN card, etc.) (not shown), and is locked according to a command from the central locking device, and the locked state is displayed. It may be displayed on the panel or unlocked.
[0076]
The base 31 has support plate portions 35A and 35B for supporting the gear mechanism. A shaft 36 is fixed to the support plate portion 35A. A gear 37 is held on the shaft 36 by a rotating material. The gear 37 is formed by integrally forming a small-diameter gear 37A and a large-diameter gear 37B in two stages, and a gear 38 attached to the output shaft of the motor 30 meshes with the large-diameter gear.
[0077]
A shaft 39 is rotatably attached between the support plate portions 35A and 35B. A gear 40 is fixed to an end portion of the shaft 39, and a worm gear 41 is fixed to an intermediate portion of the shaft 39. 39A and 39B are rings for preventing the axial displacement of the shaft 39, and 41A and 41B are rings for preventing the axial displacement of the worm gear 41.
[0078]
A gear 42 for driving the link lever 32 is engaged with the worm gear 41. The gear 42 is rotatably supported on the fixed shaft 43. A step portion 43 </ b> A is formed at the base portion of the fixed shaft 43, and the step portion 43 </ b> A contacts the base 31. A bolt (not shown) is screwed into the center of the base portion of the fixed shaft 43, and the fixed shaft 43 is fixed to the base 31.
[0079]
A fixed shaft 43 is passed through a ring 44 formed integrally with the link lever 32, and the ring 44 is rotatable with respect to the fixed shaft 43. A string-wound spring 34 is disposed on the link lever 32. The string spring 34 is passed through the fixed shaft 43 and is rotatable around the fixed shaft 43. One end of the string spring 34 is hooked into a hole 32A on one end of the link lever 32, and the other end of the string spring 34 is on a protrusion 44A of the spacer section 44 formed on the back surface of the gear 42. It is hung.
[0080]
The string spring 34 is provided at a portion that transmits the movement of the drive mechanism 10 to the dead bolt 8. The drive mechanism 10 moves the dead bolt 8 toward the receiving member 5, and the dead bolt 8 contacts the receiving member 5. Then, the driving force can be accumulated against the resistance force, and the dead bolt 8 is further urged and pressed against the receiving member 5 side to eliminate the gap expansion between the sash doors 1L and 1R. Even when the space between the dead bolt 8 and the receiving member 5 becomes narrow, the portion narrowed by the urging force is absorbed. In this way, even if the gap is large or small, it can be dealt with by the urging force of the urging means.
[0081]
The biasing means is constituted by the string spring 34, but may be other means, for example, an elastic body such as a coil spring, a leaf spring, or rubber.
[0082]
The spacer portion 44 is integrally fixed to the gear 42, and the string spring 34 is rotated with the rotation of the gear 42. The rotation of the string spring 34 is transmitted to the link lever 32, and the link lever 32 pushes out the dead bolt 8.
[0083]
A shaft 32B is provided at one end of the link lever 32 so as to protrude, and this shaft 32B is movably fitted into the long hole 8B of the dead bolt 8. The other end of the link lever 32 is formed with a stopper portion 32C that protrudes toward the base 31 side. The stopper 32C presses the contact piece HP1 of the home position sensor HP to turn on the home position sensor HP. The base 31 is provided with a stopper portion 45 that supports the link lever 32 when the stopper portion 32C hits the home position sensor HP. The home position sensor HP is connected to the microcomputer 24 via a lead wire (not shown).
[0084]
A control device that controls a motor 30 that is a drive source of the drive mechanism 10 includes a microcomputer 24 disposed on a base 31. In the microcomputer 24, after the first bolt 12A hits the flat plate 5A after the dead bolt 8 moves toward the receiving member 5, the second protrusion 12B constituting a part of the lock sensor is locked. When it hits the protrusion 5B, it is determined that it is normally locked.
[0085]
The microcomputer 24 has a function of accumulating the biasing force in the string spring 34 that is a biasing means by pressing the dead bolt 8 against the member 5 for a predetermined time after the second projection 12B hits the locking projection 5B to detect the locking. Have. A monitoring device D is connected to the microcomputer 24.
[Monitoring device]
The monitoring device D is attached on the base plate 6 in the case of the locking device 3. The monitoring device D has a plurality of microphones and processing means. The arrangement interval of the plurality of microphones is set to be equal to or less than the wavelength of the frequency of the sound (glass breaking sound here) applied to the monitoring target. The processing means determines the monitoring target area by the delay sum of the sounds detected by the plurality of microphones, and monitors the generation of the glass breaking sound having a specific frequency to be monitored.
[0086]
FIG. 9 is a block diagram of the monitoring device D. As shown in FIG. 9, the monitoring device D includes a microphone array unit 50 in which a plurality of omnidirectional microphones are arranged in parallel, an adding unit 51, an amplifying unit 52, a signal processing unit 53, and a comparative analysis unit 54. And an information output unit 55.
[0087]
The above processing means includes an adding unit 51, an amplifying unit 52, a signal processing unit 54, a comparative analysis unit 54, and an information output unit 55. In this embodiment, the security device comprises a speaker 56.
[0088]
In order to obtain directivity, the microphone array unit 50 is formed by arranging a plurality of small broadband microphones in a linear or planar manner in a direction intersecting the glass portion near the crescent lock Cr. In order to improve the directivity, the output signal of each microphone may be weighted, and a simple filter may be added to remove unnecessary low-frequency or high-frequency external noise. The arrangement interval of the microphones can be adjusted in order to obtain a desired directivity angle (an angle indicating an area where the microphone array unit 50 can collect sound).
[0089]
The adding unit 51 is a unit that adds all output signals of the microphones. Here, by setting an appropriate delay time for each microphone element as described above, only the directional main lobe is set in an arbitrary direction (mainly in the direction of sound generation) without moving the microphone array unit 50. Can be directed.
[0090]
The amplifying unit 52 is configured to amplify even a minute signal to an appropriate level with low noise.
[0091]
The signal processing unit 53 is a processing unit that extracts only a signal peculiar to the sound by filtering the signal in accordance with the frequency characteristic of the generated sound (here, the glass breaking sound) to be monitored. Here, by using the filter bank, not only one frequency component but also a plurality of frequency components are taken out and multiplied to obtain a microphone array sensor with sharper directivity.
[0092]
The comparative analysis unit 54 is configured by a comparator and distinguishes whether the sound source is a desired glass breaking sound.
[0093]
The information output unit 55 is an output unit that immediately converts glass breaking sound into analog and digital signals and outputs them to the microcomputer 24 and the speaker when the glass is broken. A speaker 56 and a microcomputer 24 are connected to the information output unit 55. When the information output unit 55 outputs a glass breaking sound detection signal, an alarm sound is generated from the speaker 55 or output to the microcomputer 24. To do.
[0094]
The speaker 56 may be connected to the microcomputer 24. When the speaker 56 is connected to the microcomputer 24, when the glass breakage signal is output from the information output unit 55 to the microcomputer 24, the microcomputer 24 is programmed to generate an alarm sound from the speaker 56. .
[0095]
The monitoring device D may be provided outside the case of the locking device 3 or may be provided independently from the locking device 3. If it is provided inside the locking device 3, it does not take time and effort to adjust the position of the monitoring device D for setting the monitoring area of the monitoring device D. It is easy to report and contact the company or landlord. When provided independently from the locking device 3, the monitoring area can be arbitrarily determined, so that the installation position can be installed on any wall surface or space in the room.
[Operation]
Next, a series of operations for locking will be described with reference to the timing chart of FIG. This timing chart shows the state when it is normally locked.
[0096]
First, when a locking command is received from the centralized locking device of the building, the motor 30 rotates forward to rotate the worm gear 41 via the gears 38, 37B, 37A, 40, and rotate the gear 42. The string spring 34 is rotated by the rotation of the gear 42 so that the link lever 32 is separated from the home position, and the home position sensor HP becomes L with a little time.
[0097]
When the forward rotation of the motor 30 is continued, the link lever 32 pushes the dead bolt 8 to the member 5 side. When the first protrusion 12A of the dead bolt 8 hits the flat plate part 5A of the receiving member 5, the conductive protrusion 28A comes into contact with the first contact 13 constituting the error sensor, and the first contact 13 and the conductive protrusion 28A are electrically connected. . After a lapse of a predetermined time (a time difference resulting from the height at which the metal fitting 5 protrudes from the glass G) after the first contact 13 and the conductive protrusion 28A are conducted, the conductive protrusion 28B is connected to the second contact 14 constituting the locking sensor. And the second contact 14 and the conductive protrusion 28B are conducted.
[0098]
After a lapse of a predetermined time after the logical product of the conduction (H) between the first contact 13 and the conduction protrusion 28A and the conduction (H) between the second contact 14 and the conduction protrusion 28B becomes (H). The power supply to the first contact 13 and the conductive protrusion 28A and the power supply to the second contact 14 and the conductive protrusion 28B are stopped. Further, after the logical product of the continuity (H) between the first contact 13 and the conductive protrusion 28A and the continuity (H) between the second contact 14 and the conductive protrusion 28B becomes (H), a predetermined time (a string spring) 34) The motor 30 is rotated in the normal direction.
[0099]
When the pushing force of the dead bolt 8 is sufficiently accumulated in the string spring 34, the motor 30 is stopped. Thereby, the locked state is maintained.
[0100]
When the unlocking command is output from the above-described central locking device, the motor 30 is rotated in the reverse direction, the home position sensor HP is turned on (H), and the home position sensor HP is turned on for a while until a stable stable state is reached. Then, the motor 30 is stopped.
[0101]
In the case of an error, the first contact 13 and the conductive protrusion 28A constituting the error sensor are not in contact with each other, or even if the second contact 14 and the conductive protrusion 28A are in contact with each other, the second contact 14 and the conductive protrusion 28B are not connected. It will not be in contact.
[0102]
In the case of this error, the wireless communication device transmits an error message to the central locking device, and the central locking device outputs the error by sound, radio, or display device.
[0103]
The start of the monitoring state by the monitoring device D enters the monitoring state. During monitoring, the microphone array unit 50 monitors the glass portion near the crescent lock Cr, and stops monitoring when the monitoring is canceled.
The monitoring device D described above enters the monitoring state immediately after the dead bolt 8 enters the locked state and the microcomputer 24 determines that the locking is normal, and receives a lock release command from the central locking device or releases the release button B. When is pressed, the monitoring state is released, the motor 30 is rotated in the reverse direction, and the locked state of the dead bolt 8 is released.
[0104]
Note that the wireless communication device that receives and locks the wireless locking command signal from the central locking device can include a transceiver, a network card, a wireless transceiver, and the like.
[effect]
The above-described locking device is equipped with a base plate 6 provided in the sash door 1R, a base plate 6 and a dead bolt 8 that can enter and exit the opening / closing operation area of the sash doors 1L and 1R, and a base plate 6, A drive mechanism 10 for pushing the bolt 8 so as to protrude into the opening / closing operation area of the sash doors 1L, 1R, and a dead bolt 8 provided on the other side of the sash door 1L and protruding by the drive mechanism 10 to receive the sash door 1L In the locking device 3 including the receiving member 5 that restricts the opening of 1R, when the dead bolt 8 contacts the receiving member 5 in the drive mechanism 10, the dead bolt 8 is further urged toward the receiving member 5 side. Since the string spring 34 is provided, when the dead bolt 8 locks the sash doors 1L and 1R with the receiving member 5, even if the closed sash doors 1L and 1R are separated, the string winding bar 34 because (urging member) is pushed out to the receiving member 5 side deadbolt 8 is prevented from forcibly would be unlocked.
[0105]
Further, even when the space between the sash doors 1L and 1R becomes narrow for some reason, it is possible to absorb the narrowed portion due to the urging force of the urging means.
[0106]
Moreover, the locking device 4 can detect the propriety of locking by a locking sensor. In addition, a locking error can be detected by the error sensor. When the deadbolt 8 includes a locking sensor and an error sensor, it is possible to accurately and easily detect the appropriateness of locking with the movement of the deadbolt 8. Furthermore, it is possible to detect the propriety of locking and to make the drive mechanism 10 for driving the dead bolt 8 simple, thereby improving the durability and reducing the cost.
[0107]
Further, by adjusting the arrangement interval of the microphones, it is possible to determine the monitoring target region of the microphones at an arbitrary position in a free three-dimensional space. In addition, since a sound having a specific frequency is detected in a narrow monitoring target region, even if a sound having the specific frequency is generated outside the monitoring target region, there is no possibility of generating a false alarm. Furthermore, since the frequency of the sound to be monitored is an ultrasonic wave emitted when the glass is damaged, it is possible to monitor a situation where the glass breaks and enters.
[0108]
In particular, by providing a monitoring device D at a position where the glass portion near the crescent lock Cr of the sash door can be monitored, when the glass G is damaged, an alarm sound is generated and notification / communication to the security facility is performed. Processing such as taking an image can be performed. Moreover, you may provide the crime prevention function of not only generating an alarm and a report, but spraying a coloring material etc. or operating the apparatus which captures the person who is going to enter.
[0109]
【The invention's effect】
According to the first monitoring method of the present application, a plurality of sound collecting elements are arranged at an arrangement interval equal to or smaller than the wavelength of the sound frequency, and monitoring is performed with emphasis on the directivity of sound detection by the delay sum of the detected sound outputs. Since the target area is defined, by adjusting the arrangement interval, it is possible to determine a free three-dimensional spatial position with respect to the sound monitoring target area of the sound collecting element, and to detect a sound having a specific frequency in a narrow area. For this reason, even if a sound having a specific frequency is generated outside the monitoring area, there is no possibility of generating false alarms.
[0110]
According to the first monitoring apparatus of the present application, as in the monitoring method described above, by adjusting the arrangement interval, it is possible to determine a free three-dimensional spatial position with respect to the sound monitoring target region of the sound collecting element. . In addition, in order to detect a sound having a specific frequency in a narrow area, even if a sound having a specific frequency is generated outside the monitoring area, there is no possibility of generating a false alarm.
[0111]
According to the second monitoring device of the present application, when the glass is broken or an ultrasonic wave peculiar to the glass is generated due to glass cutting or the like, the ultrasonic wave can be detected by the sound collecting element. It turns out that the door has been broken, and a security device such as an alarm can be activated.
[0112]
According to the crime prevention device of the present application, when the monitoring device detects an ultrasonic wave when the glass door is damaged, the alarm function is generated, communication, image shooting, coloring agent spraying, capture device operation, etc., so the crime prevention function is improved To do.
[0113]
According to the first locking device of the present application, since the glass door can be locked and the glass breakage around the crescent lock during locking can be monitored, not only the crime prevention function is improved, but also false alarms can be reduced.
[0114]
According to the 2nd locking device of this application, in addition to said effect, a crime prevention function further improves.
[Brief description of the drawings]
FIG. 1 is a plan view showing a configuration of a locking device main body according to an embodiment of the present invention.
FIG. 2 is a side view of the locking device main body of the present invention.
FIG. 3 is a perspective view showing a state in which a locking device is grounded to a sash door as an opening / closing device.
FIG. 4 is a diagram showing a cross-sectional configuration of a contact of the locking device.
FIG. 5 is a cross-sectional view showing the arrangement of conductive contacts and conductive protrusions between the contact and the holder case.
FIG. 6 is a perspective view illustrating a mounting state of a dead bolt, a holder case, and a contact.
7A is a diagram showing a state in which a dead bolt is not hitting a glass, FIG. 7B is a diagram showing a state in which a dead bolt is hitting a receiving member, and FIG. A state diagram showing a normal locked state, (d) is a state diagram when a dead bolt hits the glass and an error occurs.
FIG. 8 is a timing chart of the locking device according to the present embodiment.
FIG. 9 is a block diagram of the monitoring apparatus according to the embodiment of the present invention.
FIG. 10 is a conceptual diagram of a monitoring method according to an embodiment of the present invention.
FIG. 11 is a diagram showing the directivity of a microphone array.
FIG. 12 is a pattern diagram of directivity of a microphone array.
FIG. 13 is a pattern diagram of directivity when weighted.
[Explanation of symbols]
1L, 1R sash door (opening and closing device)
3 Locking device
4 Locking device body
5 receiving member
8 Deadbolt
10 Drive mechanism
12B 2nd protrusion (locking sensor)
14 Second contact (locking sensor)
28B Conductive protrusion (locking sensor)
12A First protrusion (Error sensor)
13 First contact (error sensor)
28A Conductive protrusion (error sensor)
24 Microcomputer
32 Link lever
34 String spring (biasing means)
Cr Crescent Tablet
B Release button
D Monitoring device
50 Microphone array section
51 Adder
52 Amplifier
53 Signal processor
54 Comparative Analysis Department
55 Information output section

Claims (6)

A receiving member provided in one glass door, a locking device main body having a dead bolt which is provided in the other glass door or door portion and can be moved back and forth with respect to the receiving member, and monitoring the glass door for damage during locking The locking device body is locked by advancing the dead bolt by a locking signal and engaging the receiving member, and retreating the dead bolt by a release signal to release the locking. A device,
Providing the monitoring device in the locking device body;
The monitoring device includes a plurality of sound collecting elements that are arranged in a direction intersecting with an axis extending in the direction of the glass part to be monitored of the glass door and detect sound from the glass part, and the plurality of sound collecting elements Processing means for detecting ultrasonic waves generated when the glass is damaged based on a signal output from the element;
A locking device characterized in that a notification means for notifying when the processing means detects an ultrasonic wave is provided. The receiving member has a flat plate portion to be attached to the glass door, and a locking projection raised from the flat plate portion,
The locking device main body is locked by advancing a dead bolt to bring the dead bolt into contact with the flat plate portion of the receiving member and bringing the dead bolt into contact with the locking projection,
The dead bolt is provided with a contact that is relatively movable in the advancing and retreating direction, the contact is biased forward, and the tip of the contact is projected from the tip of the dead bolt by a predetermined length,
When the dead bolt advances during locking, the contact is provided with a protrusion that abuts against the tip of the locking protrusion of the receiving member to retreat the contact relative to the dead bolt.
A first sensor that detects that the contact has retracted relative to the dead bolt by the amount of protrusion of the tip of the contact; and the protrusion of the contact abuts the tip of the locking protrusion of the receiving member during locking; A second sensor for detecting that the contact has retracted from the dead bolt by a predetermined distance longer than the protruding amount is provided in the locking device body;
When the deadbolt is advanced by a locking signal, the first , 2. The locking device according to claim 1, wherein the monitoring device is in a monitoring state for monitoring breakage of glass only when a detection signal is output from the second sensor. The notification means is a first , The locking device according to claim 2, wherein when the detection signal is not output from the second sensor or the detection signal is output only from the first sensor, a locking error is notified. A receiving member provided in one glass door, a locking device main body having a dead bolt which is provided in the other glass door or door portion and can be moved back and forth with respect to the receiving member, and monitoring the glass door for damage during locking The locking device body is locked by advancing the dead bolt by a locking signal and engaging the receiving member, and retreating the dead bolt by a release signal to release the locking. A device,
The receiving member has a hole through which the dead bolt can enter,
  The locking device body is locked by advancing the dead bolt to enter the hole of the receiving member,
The deadbolt has a protrusion that can move in the advancing and retreating direction of the deadbolt and can contact the edge of the hole as the deadbolt enters the hole.
The monitoring device is in a monitoring state in which the breakage of the glass is monitored on the basis of a detection signal provided from the contact point that is provided in the locking device body and energized by contact between the edge of the hole of the receiving member and the protrusion A locking device characterized by that. The monitoring device includes a plurality of sound collecting elements that are arranged in a direction intersecting with an axis extending in the direction of the glass part to be monitored of the glass door and detect sound from the glass part, and the plurality of sound collecting elements Processing means for detecting ultrasonic waves generated when the glass is damaged based on a signal output from the element;
5. The locking device according to claim 4, further comprising notification means for notifying when the processing means detects ultrasonic waves. The contact is energized by a first contact energized by contact between an edge of the hole of the receiving member and the protrusion, and further by the dead bolt entering the receiving member after energization of the first contact. A second contact,
The locking device according to claim 4, wherein the monitoring device is in the monitoring state when the first contact and the second contact are energized with a time difference .

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