JP5270823B2

JP5270823B2 - Intercom system for housing complex

Info

Publication number: JP5270823B2
Application number: JP2006251460A
Authority: JP
Inventors: 公士京面; 実福島; 博昭竹山; 恵一 ▲吉▼田
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2006-09-15
Filing date: 2006-09-15
Publication date: 2013-08-21
Anticipated expiration: 2026-09-15
Also published as: JP2008072633A

Abstract

<P>PROBLEM TO BE SOLVED: To suppress variance in sound volume of a simultaneous broadcast among house units connected to transmission lines of a plurality of systems. <P>SOLUTION: An amplification degree needed to compensate transmission loss corresponding to the line length of each of transmission lines (trunk lines L1) is designated to a trunk line control unit 3 from an alarm monitor board 5, and the control unit 30 of the trunk line controller 3 sets the amplification degree corresponding to the transmission loss in each transmission line (trunk line L1) in an amplifier 31 on the basis of the designation. Transmission loss caused during transmission from a simultaneous broadcasting device (alarm monitor board 5) to a house unit 2 through each trunk line L1 is therefore compensated by the trunk line control unit 3 to suppress the variance in sound volume of a simultaneous broadcast among the house units 2 connected to the respective trunk lines L1. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、集合住宅の共用玄関に設置された共用部装置と各住戸にそれぞれ設置される住戸機の何れか１台との間で択一的に通信路を確立して通話可能とする集合住宅用インターホンシステムに関し、特に共用部装置と１台の住戸機とが一対一で通話する個別通話の他に、集合住宅の共用部や管理人室などに設置された一斉放送装置により複数の住戸機へ音声を一斉に放送することができる集合住宅用インターホンシステムに関するものである。 The present invention is an assembly that enables communication by alternatively establishing a communication path between a common unit device installed at a common entrance of an apartment house and any one of the dwelling units installed in each dwelling unit. With regard to residential intercom systems, in particular, in addition to individual calls in which a common unit device and one dwelling unit make a one-on-one call, a plurality of dwelling units are provided by a simultaneous broadcasting device installed in a common unit or a manager's room of an apartment house. The present invention relates to an intercom system for collective housing that can broadcast audio to the machine all at once.

従来、集合住宅の共用玄関に設置され音声の入出力が可能な共用部装置（ロビーインターホン）と、集合住宅の各住戸にそれぞれ設置され共用部装置とは伝送線路を介して接続されるとともに共用部装置が有する選択手段（テンキーなど）を来訪者が操作することにより選択されると共用部装置との間で通信路を確立する複数台の住戸機（インターホン親機や住宅情報盤など）と、集合住宅の各住戸にそれぞれ設置され住戸機とは通話用の子器接続線を介して接続されるドアホン子器と、集合住宅の共用部若しくは管理人室に設置され各住戸機とは伝送線路を介して接続されるとともに一部又は全部の住戸機に対して一斉に音声を放送する一斉放送装置とを備えた集合住宅用インターホンシステムが提供されている（例えば、特許文献１参照）。また、集合住宅が複数の棟で構成されている場合、伝送線路を各棟に分配するための幹線制御装置が設けられる。
特開平６−１４１２５号公報 Conventionally, a common unit (lobby intercom) installed at the common entrance of an apartment house and capable of voice input and output, and a common unit installed at each dwelling unit of an apartment house are connected via a transmission line and shared. A plurality of dwelling units (such as an interphone master unit and a housing information panel) that establish communication paths with the shared unit device when a visitor selects a selection means (such as a numeric keypad) that the unit device has. A doorphone handset installed in each dwelling unit of a housing complex and connected via a cordless handset connection line to a dwelling unit, and transmitted to each dwelling unit installed in a common area or a manager's room of a housing complex There is provided an intercom system for collective housing provided with a simultaneous broadcasting device that is connected via a track and broadcasts audio to all or some of the dwelling units at once (for example, see Patent Document 1). . Moreover, when the apartment house is composed of a plurality of buildings, a trunk line control device is provided for distributing the transmission line to each building.
JP-A-6-14125

ところで、集合住宅の規模によっては一斉放送装置から各住戸機までの伝送線路（の配線長）が数百メートルから数キロメートルにも及ぶ場合があり、また住戸機の接続台数及び、幹線機器（共用部装置や一斉放送装置）の台数も集合住宅の規模によって異なるため、配線、住戸機、幹線機器のインピーダンスに起因した伝送線路の伝送ロスも悪化して住戸機における一斉放送の音量が低下してしまう。しかも、伝送線路（幹線と各系統の幹線から各住戸機へそれぞれ分岐された住戸別線）が幹線制御装置によって各棟毎に分配されている場合、各棟の住戸機間に音量のばらつきが生じるという問題があった。ここで、「伝送ロス」とは、伝送系の２地点間（上述の例では一斉放送装置と各住戸機の間）において、送信信号に対する受信信号の振幅や位相の変化及びその変化量と定義される。 By the way, depending on the size of the housing complex, the transmission line from the simultaneous broadcasting device to each dwelling unit (the wiring length ) may extend from several hundred meters to several kilometers, and the number of connected dwelling units and the main line equipment (shared) As the number of mobile devices and broadcast equipment varies depending on the size of the housing complex, the transmission loss of the transmission line due to the impedance of the wiring, dwelling unit, and trunk line equipment also worsens, and the volume of the broadcast in the dwelling unit decreases. End up. In addition, when transmission lines (divided to each unit from the main line and the main line of each system to each dwelling unit) are distributed to each building by the main line control device, there is a variation in volume between the dwelling units in each building. There was a problem that occurred. Here, “transmission loss” is defined as a change in the amplitude and phase of the received signal with respect to the transmission signal and the amount of change between the two points in the transmission system (between the simultaneous broadcasting device and each dwelling unit in the above example). Is done.

本発明は上記事情に鑑みて為されたものであり、その目的は、複数系統の伝送線路に接続された住戸機間における一斉放送の音量のばらつきを抑えることができる集合住宅用インターホンシステムを提供することにある。 The present invention has been made in view of the above circumstances, and an object thereof is to provide an intercom system for collective housing that can suppress the variation in volume of simultaneous broadcasting between dwelling units connected to a plurality of transmission lines. There is to do.

請求項１の発明は、上記目的を達成するために、集合住宅の共用玄関に設置され音声の入出力が可能な共用部装置と、集合住宅の各住戸にそれぞれ設置され共用部装置とは伝送線路を介して接続されるとともに共用部装置が有する選択手段を来訪者が操作することにより選択されると共用部装置との間で通信路を確立する複数台の住戸機と、複数台の住戸機がそれぞれ分岐接続された複数系統の幹線と共用部装置が接続された幹線との間に挿入される幹線制御装置と、集合住宅の共用部若しくは管理人室に設置され各住戸機とは前記伝送線路を介して接続されるとともに一部又は全部の住戸機に対して一斉に音声を放送する一斉放送装置と、伝送線路の終端に設けられ一斉放送装置から伝送線路を介して伝送される線路長調査信号に対して返信信号を伝送する返信装置とを備え、伝送線路は、前記複数系統の幹線と各系統の幹線から各住戸機へそれぞれ分岐された住戸別線とを含み、幹線および住戸別線は、少なくとも選択手段の操作に伴って発生し個別通話の開始を指示する制御信号を伝送する制御線と、音声信号を伝送する通話線とからなり、住戸機は、共用部装置との間で通話線を介した通話を行う通話手段と、少なくとも一斉放送の音声を鳴動するスピーカと、通話線を通話手段に接続する状態とスピーカに接続する状態とを択一的に切り換える個別通話／一斉放送切換手段と、制御線を介して伝送される制御信号に基づいて個別通話／一斉放送切換手段を制御する制御手段とを具備し、制御手段は、制御線を介して一斉放送開始を指示する制御信号を受信したときに個別通話／一斉放送切換手段を制御して通話線をスピーカに接続する状態に切り換えるものであって、幹線制御装置は、各幹線毎に一斉放送用の音声信号を増幅する増幅手段と、一斉放送の開始以前に予め指示された増幅度を増幅手段に設定する増幅度制御手段とを具備し、一斉放送装置は、線路長調査信号を送信した時点から返信装置の返信信号を受信するまでの時間に基づいて当該伝送線路の線路長を算出する線路長算出手段と、算出された線路長に対応する伝送ロスを補償するのに必要な増幅度を幹線制御装置に指示する指示手段とを具備することを特徴とする。 In order to achieve the above object, the first aspect of the present invention provides a common unit device installed at a common entrance of a housing complex and capable of inputting / outputting sound, and a common unit device installed at each dwelling unit of the housing complex. A plurality of dwelling units that establish a communication path with the common unit when connected by a visitor and are selected by a visitor operating the selection means that the common unit has The main line control device inserted between a plurality of main lines to which the machines are branched and the main line to which the common unit device is connected, and each dwelling unit installed in the common unit or the manager's room of the apartment A broadcast apparatus that is connected via a transmission line and broadcasts audio to all or some of the dwelling units at once, and a line that is provided at the end of the transmission line and transmitted from the broadcast apparatus via the transmission line Return for long survey signal And a return device for transmitting a signal, the transmission line includes said plurality of systems of trunk and dwelling by lines which are respectively branched from the main line of each path to each dwelling unit, trunk and dwelling by line, at least selection means It consists of a control line that transmits a control signal that is generated in response to the operation of and instructs the start of an individual call, and a communication line that transmits an audio signal, and the dwelling unit is connected to the shared device via the communication line. A call means for making a call, a speaker for sounding at least a broadcast sound, an individual call / broadcast switching means for selectively switching between a state in which the call line is connected to the call means and a state in which the speaker is connected to the speaker, and control Control means for controlling the individual call / broadcast switching means based on a control signal transmitted through the line, and the control means receives a control signal instructing the start of the broadcast through the control line. Individually The main line control device controls the talk / broadcast switching means to switch to a state in which the call line is connected to the speaker. The main line control device includes an amplifying means for amplifying the broadcast audio signal for each main line, An amplification degree control means for setting the amplification degree instructed in advance to the amplification means before the start , and the simultaneous broadcasting device is in a time from when the line length survey signal is transmitted until the reply signal of the reply device is received. Line length calculating means for calculating the line length of the transmission line based on the above, and instruction means for instructing the main line control device of the amplification degree required to compensate for the transmission loss corresponding to the calculated line length. It is characterized by.

請求項２の発明は、上記目的を達成するために、集合住宅の共用玄関に設置され音声の入出力が可能な共用部装置と、集合住宅の各住戸にそれぞれ設置され共用部装置とは伝送線路を介して接続されるとともに共用部装置が有する選択手段を来訪者が操作することにより選択されると共用部装置との間で通信路を確立する複数台の住戸機と、複数台の住戸機がそれぞれ分岐接続された複数系統の幹線と共用部装置が接続された幹線との間に挿入される幹線制御装置と、集合住宅の共用部若しくは管理人室に設置され各住戸機とは前記伝送線路を介して接続されるとともに一部又は全部の住戸機に対して一斉に音声を放送する一斉放送装置とを備え、
伝送線路は、前記複数系統の幹線と各系統の幹線から各住戸機へそれぞれ分岐された住戸別線とを含み、幹線および住戸別線は、少なくとも選択手段の操作に伴って発生し個別通話の開始を指示する制御信号を伝送する制御線と、音声信号を伝送する通話線とからなり、住戸機は、共用部装置との間で通話線を介した通話を行う通話手段と、少なくとも一斉放送の音声を鳴動するスピーカと、通話線を通話手段に接続する状態とスピーカに接続する状態とを択一的に切り換える個別通話／一斉放送切換手段と、制御線を介して伝送される制御信号に基づいて個別通話／一斉放送切換手段を制御する制御手段と、伝送線路に接続されている住戸機の台数を検出する台数検出手段とを具備し、制御手段は、一斉放送開始を指示する制御信号を受信したときに個別通話／一斉放送切換手段を制御して通話線をスピーカに接続する状態に切り換え、且つ制御線を介して接続台数を問い合わせる制御信号を受信したときに台数検出手段で検出した接続台数を一斉放送装置に伝送するものであって、幹線制御装置は、各幹線毎に一斉放送用の音声信号を増幅する増幅手段と、一斉放送の開始以前に予め指示された増幅度を増幅手段に設定する増幅度制御手段とを具備し、一斉放送装置は、住戸機から制御信号によって知らされる住戸機の接続台数に対応した伝送ロスを補償するのに必要な増幅度を幹線制御装置に指示する指示手段を具備することを特徴とする。 In order to achieve the above object , the invention according to claim 2 is a communication between a shared unit device installed at a common entrance of an apartment house and capable of inputting / outputting sound, and a shared unit device installed at each dwelling unit of the apartment house. A plurality of dwelling units that establish a communication path with the common unit when connected by a visitor and are selected by a visitor operating the selection means that the common unit has The main line control device inserted between a plurality of main lines to which the machines are branched and the main line to which the common unit device is connected, and each dwelling unit installed in the common unit or the manager's room of the apartment And a broadcast device that is connected via a transmission line and broadcasts audio to all or some of the dwelling units at once,
The transmission line includes a plurality of trunk lines and a separate line for each unit branching from the trunk line of each line to each dwelling unit. a control line for transmitting a control signal for instructing the start consists of a call line for transmitting a voice signal, dwelling machine, a call unit for performing a call through the call line between the common part unit, at least simultaneously broadcast A speaker for ringing voice, individual call / broadcast switching means for selectively switching between a state in which the call line is connected to the call means and a state in which the call line is connected to the speaker, and a control signal transmitted via the control line and control means for controlling the individual call / broadcast broadcast switching means based, it comprises a number detection means for detecting the number of dwelling units units connected to the transmission line, the control means, the control signal instructing the simultaneous broadcast start Receive Connection number detected by the volume detecting means when it receives a control signal for inquiring the number of connected units via the individual call / switching control to call line simultaneous broadcast switching means to a state of connection to the speaker, and the control line when the Is transmitted to the broadcast device, and the main line control device uses the amplification means for amplifying the sound signal for broadcast for each main line and the amplification degree designated in advance before the start of the broadcast. The broadcast control device instructs the main line control device about the gain necessary to compensate for the transmission loss corresponding to the number of connected units informed by the control signal from the unit. It is characterized by having an instruction means.

本発明によれば、幹線制御装置において増幅度制御手段が一斉放送の開始以前に予め指示された増幅度を増幅手段に設定するので、一斉放送装置から各系統の伝送線路（幹線）を介して住戸機に伝送される間に生じる伝送ロスが幹線制御装置にて補償され、複数系統の伝送線路に接続された住戸機間における一斉放送の音量のばらつきを抑えることができる。 According to the present invention, since the amplification degree control means sets the amplification degree designated in advance before the start of the broadcast to the amplification means in the trunk line control apparatus, the broadcast apparatus passes through the transmission lines (main lines) of each system. Transmission loss that occurs during transmission to the dwelling unit is compensated for by the trunk line control device, and variations in the volume of broadcast broadcasts among dwelling units connected to a plurality of transmission lines can be suppressed.

以下、図面を参照して本発明の実施形態を詳細に説明する。尚、以下の各実施形態では幹線制御装置３において伝送線路（幹線）を３系統に分配する構成を例示しているが、３系統に限定する趣旨ではなく、２系統あるいは４系統以上に分配する構成であっても構わない。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following embodiments, a configuration in which the transmission line (main line) is distributed to three systems in the main line control device 3 is illustrated. However, the configuration is not limited to three systems, and is distributed to two systems or four or more systems. It may be a configuration.

（実施形態１）
本実施形態の集合住宅用インターホンシステムの構成例を図１に示す。本実施形態では、集合住宅の共用玄関に設置される共用部装置（ロビーインターホン）１と、各住戸にそれぞれ設置される複数台の住戸機２とを備え、ロビーインターホン１と住戸機２とが伝送線路を介して接続されている。伝送線路は、ロビーインターホン１に接続される幹線Ｌ１と、各住戸機２にそれぞれ接続される分岐線Ｌ２とを含み、さらに幹線Ｌ１を複数系統（図１では３系統）に分配するための幹線制御装置３が設けられるとともに、各幹線Ｌ１の終端にはそれぞれ返信装置８が設けられている（但し、図１では１台のみ図示）。この伝送線路としては、３対以上のペア線をシース内に備える多対ツイストペアケーブルを用いており、図示例ではロビーインターホン１と住戸機２との間で音声信号を伝送する通話線Ｌａと、ロビーインターホン１が具備するカメラ（図示せず）で撮像された映像信号を伝送する映像線Ｌｂと、ロビーインターホン１が有する選択手段（後述する）により選択された住戸機２を指定する制御信号を伝送する制御線Ｌｃとにそれぞれペア線を用いている。つまり、図示例の伝送線路では３対のペア線を用いている。ここで、映像線Ｌｂを介して伝送される映像信号はロビーインターホン１において周波数変調され、後述するように各住戸機２に設けた映像処理部１２で周波数復調されてモニタ部１３に表示される。 (Embodiment 1)
The structural example of the intercom system for apartment houses of this embodiment is shown in FIG. In the present embodiment, a common unit device (lobby intercom) 1 installed at a common entrance of an apartment house and a plurality of dwelling units 2 installed in each dwelling unit are provided. It is connected via a transmission line. The transmission line includes a trunk line L1 connected to the lobby intercom 1 and a branch line L2 connected to each dwelling unit 2, and further distributes the trunk line L1 to a plurality of systems (three systems in FIG. 1). A control device 3 is provided, and a return device 8 is provided at the end of each trunk line L1 (however, only one is shown in FIG. 1). As this transmission line, a multi-pair twisted pair cable having three or more pairs in the sheath is used. In the illustrated example, a communication line La that transmits an audio signal between the lobby intercom 1 and the dwelling unit 2; A video signal Lb for transmitting a video signal picked up by a camera (not shown) provided in the lobby intercom 1 and a control signal for designating the dwelling unit 2 selected by the selection means (described later) of the lobby intercom 1 are provided. A pair line is used for each control line Lc to be transmitted. That is, the transmission line of the illustrated example uses three pairs of pair wires. Here, the video signal transmitted through the video line Lb is frequency-modulated by the lobby intercom 1 and is demodulated by the video processing unit 12 provided in each dwelling unit 2 and displayed on the monitor unit 13 as will be described later. .

図示は省略するが、ロビーインターホン１は音声を入出力するマイクロホン及びスピーカと、来訪者を撮像するカメラと、住戸番号を指定するための番号キーと呼出釦を有する選択手段とを備え、来訪者が番号キーを操作して訪問先の住戸番号を選択した後に呼出釦を操作すると住戸番号に対応する住戸機２を選択したことになる。ここで、ロビーインターホン１には通話線Ｌａ及び制御線Ｌｃを介して一斉放送装置（警報監視盤）５が接続されており、ロビーインターホン１で選択された住戸番号が制御線Ｌｃを介して警報監視盤５に伝送されると、警報監視盤５が当該住戸番号に対応する住戸機２に対して制御線Ｌｃを介して制御信号（呼出コマンド）を送出する。 Although not shown, the lobby intercom 1 includes a microphone and a speaker for inputting / outputting sound, a camera for imaging a visitor, a selection key having a number key for designating a dwelling unit number and a call button, and When the call button is operated after the number key is operated to select the visited unit number, the unit 2 corresponding to the unit number is selected. Here, a simultaneous broadcasting device (alarm monitoring panel) 5 is connected to the lobby intercom 1 via the communication line La and the control line Lc, and the dwelling unit number selected on the lobby intercom 1 is alerted via the control line Lc. When transmitted to the monitoring board 5, the alarm monitoring board 5 sends a control signal (call command) to the dwelling unit 2 corresponding to the dwelling unit number via the control line Lc.

一方、住戸機２は、音声を入出力するマイクロホン２１及びスピーカ２２を備え、マイクロホン２１とスピーカ２２とはそれぞれ増幅器２３ａ，２３ｂを介して通話処理部２４に接続されている。また、通話処理部２４には受話側並びに送話側の各伝送経路と２線の通話線Ｌａとを２線４線変換する２線４線変換部２５が増幅器２６ａ，２６ｂを介して接続されている。通話処理部２４は、通話線Ｌａを介して伝送されてくる音声信号（受話信号）とマイクロホン２１から出力される音声信号（送話信号）のレベルを比較することで通話状態（受話状態又は送話状態）を推定し、受話状態と推定したときには送話信号の伝送経路に損失を挿入し、送話状態と推定したときには受話信号の伝送経路に損失を挿入することで受話モードと送話モードを切り換える音声スイッチや、マイクロホン２１とスピーカ２２の音響結合によって生じる音響エコーを消去するためのエコーキャンセラなどを具備する。但し、このような音声スイッチやエコーキャンセラは従来周知であるから詳細な構成及び動作の図示並びに説明は省略する。したがって、ロビーインターホン１と住戸機２との間で通話線Ｌａを通して音声信号を授受することができ、来訪者がロビーインターホン１を用いるとともに居住者が住戸機２を用いることによって、来訪者と居住者との間で音声通話が可能となる。 On the other hand, the dwelling unit 2 includes a microphone 21 and a speaker 22 that input and output audio, and the microphone 21 and the speaker 22 are connected to the call processing unit 24 via amplifiers 23a and 23b, respectively. Also connected to the call processing unit 24 is a two-wire / four-wire conversion unit 25 for converting the transmission paths on the reception side and the transmission side and the two-line communication line La into two-wire / four-wires through amplifiers 26a and 26b. ing. The call processing unit 24 compares the level of the voice signal (received signal) transmitted via the call line La and the level of the voice signal (transmitted signal) output from the microphone 21 to compare the call state (received state or transmitted state). When a call state is estimated, a loss is inserted into the transmission path of the transmission signal, and when a transmission state is estimated, a loss is inserted into the transmission path of the reception signal. And an echo canceler for eliminating acoustic echo generated by acoustic coupling between the microphone 21 and the speaker 22. However, since such voice switches and echo cancellers are well known in the art, detailed illustration and description of the configuration and operation are omitted. Therefore, an audio signal can be exchanged between the lobby intercom 1 and the dwelling unit 2 through the communication line La. A visitor uses the lobby intercom 1 and a resident uses the dwelling unit 2 so that the visitor and the residence Voice calls can be made with a person.

また住戸機２には、分岐線Ｌ２の通話線Ｌａと映像線Ｌｂをそれぞれ通話信号（受話信号及び送話信号）の伝送経路（以下、「通話路」と呼ぶ。）と映像信号の伝送経路に分離する幹線インタフェース部１４が設けられている。映像信号の伝送経路は映像処理部１２に接続され、通話路は通話／一斉放送切換部１５に接続されている。通話／一斉放送切換部１５は、幹線インタフェース部１４に接続された通話路を、通話路切換部１６に接続する状態と、スピーカ２２に接続する状態とを択一的に切り換えるものである。また通話路切換部１６は、２線４線変換部２５に接続された通話路を、通話／一斉放送切換部１５に接続する状態と、後述する子器インタフェース部１８に接続する状態と、同一住戸内に設置された別の住戸機（図示せず）に接続する状態とを択一的に切り換えるものである。 Further, in the dwelling unit 2, the communication line La and the video line Lb of the branch line L2 are respectively connected to a transmission path (hereinafter referred to as “call path”) and a video signal transmission path. A main line interface unit 14 is provided. The transmission path of the video signal is connected to the video processing unit 12, and the communication path is connected to the call / broadcast switching unit 15. The call / broadcast switching unit 15 selectively switches the state where the speech path connected to the main line interface unit 14 is connected to the speech path switching unit 16 and the state where it is connected to the speaker 22. Further, the communication path switching unit 16 is the same as the state in which the communication path connected to the two-wire / four-line conversion unit 25 is connected to the telephone / broadcast switching unit 15 and the state in which the communication path is connected to the handset interface unit 18 described later. It selectively switches between a state of connection to another dwelling unit (not shown) installed in the dwelling unit.

通話路切換部１６に接続された子器インタフェース部１８には子器接続線Ｌ３を介してドアホン子器６が接続される。ドアホン子器６は集合住宅の各住戸の玄関先に配置されるものであってマイクロホン及びスピーカを備える。したがって、通話路切換部１６が２線４線変換部２５に接続された通話路を子器インタフェース部１８に接続する状態に切り換えられているときにドアホン子器６と住戸機２との間での通話が可能になっている。また、ドアホン子器６にはテレビカメラが設けられ、子器インタフェース部１８では子器接続線Ｌ３を介して伝送される音声信号と映像信号を分離し、分離した映像信号を伝送線路を介して映像処理部１２に出力してモニタ部１３に表示することができるようになっている。さらにドアホン子器６には呼出釦が設けられ、呼出釦が操作されたときに子器接続線Ｌ３に呼出信号を送出する機能を有し、住戸機２では呼出信号を検出したときに報知音生成部２７で生成された呼出音がスピーカ２２から送出されるようになっている。 The door phone slave unit 6 is connected to the slave unit interface unit 18 connected to the speech path switching unit 16 via the slave unit connection line L3. The door phone sub-unit 6 is disposed at the entrance of each dwelling unit of the apartment house and includes a microphone and a speaker. Therefore, when the speech path switching unit 16 is switched to a state in which the speech path connected to the 2-wire 4-wire conversion unit 25 is connected to the slave unit interface unit 18, between the doorphone slave unit 6 and the dwelling unit 2. Is possible. Further, the door phone slave unit 6 is provided with a television camera, and the slave unit interface unit 18 separates the audio signal and the video signal transmitted via the slave unit connection line L3, and the separated video signal is transmitted via the transmission line. It can be output to the video processing unit 12 and displayed on the monitor unit 13. Further, the door phone slave unit 6 is provided with a call button, and has a function of sending a call signal to the slave unit connection line L3 when the call button is operated, and the dwell unit 2 has a notification sound when the call signal is detected. The ringing tone generated by the generation unit 27 is transmitted from the speaker 22.

住戸機２において、モニタ部１３には液晶表示器あるいはＣＲＴが用いられる。映像線Ｌｂを通して住戸機２に入力される映像信号は、幹線インタフェース部１４で平衡−不平衡変換され、さらに増幅器で増幅された後に映像処理部１２において周波数復調される。また、子器接続線Ｌ３を通して住戸機２に入力される映像信号も、子器インタフェース部１８で平衡−不平衡変換され、さらに増幅器で増幅された後に映像処理部１２において周波数復調される。そして、映像処理部１２から出力された映像信号は、モニタ部１３に入力されることによってモニタ部１３の画面に映像を表示する。つまり、ロビーインターホン１やドアホン子器６のカメラにおいて撮像された来訪者の映像が住戸機２のモニタ部１３に表示されるから、住戸内の居住者が来訪者を確認することができるのである。 In the dwelling unit 2, a liquid crystal display or a CRT is used for the monitor unit 13. The video signal input to the dwelling unit 2 through the video line Lb is balanced-unbalanced converted by the main line interface unit 14, further amplified by an amplifier, and then frequency demodulated by the video processing unit 12. The video signal input to the dwelling unit 2 through the slave unit connection line L3 is also balanced-unbalanced converted by the slave unit interface unit 18, further amplified by an amplifier, and then frequency-demodulated by the video processing unit 12. The video signal output from the video processing unit 12 is input to the monitor unit 13, thereby displaying a video on the screen of the monitor unit 13. That is, since the image of the visitor imaged by the camera of the lobby intercom 1 or the door phone slave unit 6 is displayed on the monitor unit 13 of the dwelling unit 2, the resident in the dwelling unit can confirm the visitor. .

また報知音生成部２７は、ロビーインターホン１やドアホン子器６からの呼出等を報知するための報知音を生成し、生成した報知音を増幅器２８ａを介してスピーカ２２に出力するとともに当該報知音をバックトーンとして分岐線Ｌ２又は子器接続線Ｌ３にも出力する。すなわち、報知音生成部２７には増幅器２８ｂを介してバックトーン送出路切換部１７が接続されており、このバックトーン送出路切換部１７がバックトーンの送出先を分岐線Ｌ２と子器接続線Ｌ３とに択一的に切り換えるようになっている。 In addition, the notification sound generation unit 27 generates a notification sound for notification of a call from the lobby intercom 1 or the door phone slave unit 6 and outputs the generated notification sound to the speaker 22 via the amplifier 28a. Is output as a back tone to the branch line L2 or the slave unit connection line L3. That is, the back tone transmission path switching section 17 is connected to the notification sound generation section 27 via the amplifier 28b, and the back tone transmission path switching section 17 selects the back tone transmission destination as the branch line L2 and the slave unit connection line. Alternatively, it is switched to L3.

住戸機２には、ＣＰＵを主構成要素とし内部回路を制御する主制御部１０が設けられ、主制御部１０には制御線Ｌｃとのインタフェースとなる制御信号送受信部１１が接続される。制御信号送受信部１１は、主制御部１０から出力された制御信号を制御線Ｌｃに送出し、制御線Ｌｃから受信した制御信号を主制御部１０に引き渡す機能を有する。 The dwelling unit 2 is provided with a main control unit 10 that controls the internal circuit with a CPU as a main component, and a control signal transmission / reception unit 11 that is an interface with the control line Lc is connected to the main control unit 10. The control signal transmission / reception unit 11 has a function of sending the control signal output from the main control unit 10 to the control line Lc and delivering the control signal received from the control line Lc to the main control unit 10.

ところで、分岐線Ｌ２は分岐器７を介して幹線Ｌ１から分岐され、幹線制御装置３においては各系統の幹線Ｌ１を直結している。したがって、ロビーインターホン１から送出された制御信号は制御線Ｌｃに接続されるすべての住戸機２に伝送される。ここに、住戸機２の主制御部１０には個別にアドレス（たとえば、住戸番号）が設定されており、ロビーインターホン１においてアドレスを選択することによって、アドレスを指定する制御信号（呼出コマンド）が警報監視盤５から制御線Ｌｃを介して全ての住戸機２に伝送することが可能になっている。住戸機２の主制御部１０は、制御信号に含まれるアドレスが自己のアドレスであれば映像処理部１２やモニタ部１３を起動してロビーインターホン１のカメラにおいて撮像された来訪者の映像を住戸機２のモニタ部１３に表示させるとともに、報知音生成部２７に生成させた報知音（呼出音）をスピーカ２２から送出させる。そして、呼出音に応じて居住者が住戸機２の応答釦（図示せず）を押操作すれば、主制御部１０が通話／一斉放送切換部１５を制御して幹線インタフェース部１４に接続された通話路を通話路切換部１６に接続する状態に切り換えさせるとともに通話路切換部１６を制御して２線４線変換部２５に接続された通話路を通話／一斉放送切換部１５に接続する状態に切り換えさせてロビーインターホン１との間に通信路を確立することにより、ロビーインターホン１と選択された住戸機２との間でのみ通話可能にすることができるとともに、選択された住戸機２でのみカメラで撮像された来訪者をモニタ部１３に表示することが可能になる。尚、ロビーインターホン１において選択された住戸機２がロビーインターホン１との間で通信路を確立している状態は、ロビーインターホン１または住戸機２において適宜の操作釦を用いた通話終了が検出されると終了する。 By the way, the branch line L2 is branched from the trunk line L1 via the branching device 7, and the trunk line control apparatus 3 directly connects the trunk lines L1 of each system. Therefore, the control signal sent from the lobby intercom 1 is transmitted to all the dwelling units 2 connected to the control line Lc. Here, an address (for example, a dwelling unit number) is individually set in the main control unit 10 of the dwelling unit 2, and a control signal (call command) for designating an address is selected by selecting the address in the lobby intercom 1. It is possible to transmit from the alarm monitoring panel 5 to all the dwelling units 2 via the control line Lc. If the address included in the control signal is its own address, the main control unit 10 of the dwelling unit 2 activates the video processing unit 12 and the monitor unit 13 to display the video of the visitor captured by the camera of the lobby intercom 1 The notification sound (calling sound) generated by the notification sound generation unit 27 is transmitted from the speaker 22 while being displayed on the monitor unit 13 of the machine 2. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the call / broadcast switching unit 15 and is connected to the main line interface unit 14. The communication path is switched to a state where it is connected to the communication path switching unit 16 and the communication path switching unit 16 is controlled to connect the communication path connected to the two-wire / four-line conversion unit 25 to the calling / broadcast switching unit 15. By switching to the state and establishing a communication path with the lobby intercom 1, it is possible to make a call only between the lobby intercom 1 and the selected dwelling unit 2, and the selected dwelling unit 2 It is possible to display the visitor imaged by the camera only on the monitor unit 13. When the dwelling unit 2 selected in the lobby intercom 1 establishes a communication path with the lobby intercom 1, the end of the call using an appropriate operation button is detected in the lobby intercom 1 or dwelling unit 2. Then it ends.

また、ドアホン子器６の呼出釦が押操作されて子器接続線Ｌ３に呼出信号が送出されると、呼出信号を検出した住戸機２の主制御部１０が映像処理部１２やモニタ部１３を起動してドアホン子器６のカメラにおいて撮像された来訪者の映像を住戸機２のモニタ部１３に表示させるとともに、報知音生成部２７に生成させた報知音（呼出音）をスピーカ２２から送出させる。そして、呼出音に応じて居住者が住戸機２の応答釦（図示せず）を押操作すれば、主制御部１０が通話路切換部１６を制御して２線４線変換部２５に接続された通話路を子器インタフェース部１８に接続する状態に切り換えさせてドアホン子器６との間に通信路を確立することにより、ドアホン子器６と住戸機２との間で通話可能にすることができるとともにカメラで撮像された来訪者をモニタ部１３に表示することが可能になる。 When the call button of the door phone slave unit 6 is pressed and a call signal is sent to the slave unit connection line L3, the main control unit 10 of the dwelling unit 2 that has detected the call signal causes the video processing unit 12 and the monitor unit 13 to detect the call signal. Is displayed on the monitor unit 13 of the dwelling unit 2 and the notification sound (calling sound) generated by the notification sound generation unit 27 is output from the speaker 22. Send it out. When the resident presses a response button (not shown) of the dwelling unit 2 in response to the ringing tone, the main control unit 10 controls the speech path switching unit 16 to connect to the 2-line 4-line conversion unit 25. The communication path between the doorphone slave unit 6 and the dwelling unit 2 can be communicated by switching the communication path thus established to a state where it is connected to the slave unit interface unit 18 and establishing a communication path with the doorphone slave unit 6. It is possible to display the visitors imaged by the camera on the monitor unit 13.

一方、警報監視盤５は集合住宅の管理人室などに設置され、通話線Ｌａを介して各住戸機２との間で通話並びに一斉放送を行う機能や、制御線Ｌｃを介して各住戸機２に一斉放送の開始及び終了を指示する機能などを有している。例えば、警報監視盤５から全ての住戸機２に対して一斉放送を行う場合、警報監視盤５から一斉放送の開始を指示する制御信号（一斉放送開始コマンド）が制御線Ｌｃを介して各住戸機２に送信され、この制御信号を受信した各住戸機２では、一斉放送開始コマンドに応じて主制御部１０が通話／一斉放送切換部１５を制御して幹線インタフェース部１４に接続された通話路をスピーカ２２に接続する状態に切り換えさせて警報監視盤５との間に通信路が確立され、警報監視盤５から送出される一斉放送の音声信号（以下、「一斉放送用音声信号」と呼ぶ。）が通話線Ｌａを介して各住戸機２に伝送される。そして、各住戸機２においては一斉放送用音声信号がスピーカ２２から送出される。 On the other hand, the alarm monitoring panel 5 is installed in a manager's room of an apartment house, etc., and has a function of calling and broadcasting to each dwelling unit 2 via the call line La, and each dwelling unit via the control line Lc. 2 has a function for instructing the start and end of broadcast. For example, when performing broadcast to all the dwelling units 2 from the alarm monitoring panel 5, a control signal (simultaneous broadcast start command) instructing the start of the broadcast from the alarm monitoring panel 5 is sent to each dwelling unit via the control line Lc. In each dwelling unit 2 that has been transmitted to the machine 2 and received this control signal, the main control unit 10 controls the call / broadcast switching unit 15 in response to the broadcast start command, and the call connected to the main line interface unit 14 The communication path is established with the alarm monitoring board 5 by switching the path to the state connected to the speaker 22, and a broadcast audio signal (hereinafter referred to as "broadcast audio signal") sent from the alarm monitoring board 5 is established. Is transmitted to each dwelling unit 2 via the telephone line La. In each dwelling unit 2, a broadcast audio signal is transmitted from the speaker 22.

警報監視盤５は、図１に示すようにＣＰＵを主構成要素とする制御部５０と、制御部５０と制御線Ｌｃとのインタフェースとなる制御信号送受信部５１と、通話用のハンドセット（送受話器）５２と、送話信号及び受話信号を増幅する増幅器５３ａ，５３ｂと、受話側並びに送話側の各伝送経路と２線の通話線Ｌａとを２線４線変換する２線４線変換部５４と、送話側の増幅器５３ｂを２線４線変換部５４を介して通話線Ｌａに接続する状態と２線４線変換部５４を介さずに増幅器５８を介して通話線Ｌａに接続する状態とに択一的に切り換える通話／一斉放送切換部５７と、ロビーインターホン１に接続された通話線Ｌａと幹線制御装置３に接続された通話線Ｌａとの間に挿入された開閉スイッチ部５９とを備えている。尚、図示は省略するが、警報監視盤５には住戸番号を指定するための番号キーと呼出釦を有する選択手段とが設けられ、管理人が番号キーを操作して何れかの住戸番号を選択した後に呼出釦を操作することで住戸番号に対応する住戸機２を選択すれば、選択した住戸機２との間に通信路が形成されてハンドセット５２により当該住戸機２との間でのみ通話を行うことができる。また、かかる通話時には、制御部５０によって２線４線変換部５４を介して送話側の増幅器５３ｂを通話線Ｌａに接続する状態に通話／一斉放送切換部５７が切り換えられるとともに開閉スイッチ部５９が開成されてロビーインターホン１が幹線Ｌ１から切り離される。 As shown in FIG. 1, the alarm monitoring panel 5 includes a control unit 50 having a CPU as a main component, a control signal transmission / reception unit 51 serving as an interface between the control unit 50 and the control line Lc, and a telephone handset (handset) ) 52, amplifiers 53a and 53b for amplifying the transmission signal and the reception signal, and a two-line four-line conversion unit that performs two-line four-line conversion between the transmission line on the reception side and the transmission side and the two-line communication line La. 54 and a state in which the transmission side amplifier 53b is connected to the communication line La via the 2-wire 4-wire conversion unit 54, and is connected to the communication line La via the amplifier 58 without passing through the 2-wire 4-line conversion unit 54. A call / broadcast switching unit 57 that selectively switches between states, and an open / close switch unit 59 that is inserted between the communication line La connected to the lobby intercom 1 and the communication line La connected to the trunk line control device 3. And. Although not shown, the alarm monitoring panel 5 is provided with a number key for designating a dwelling unit number and a selection means having a call button, and an administrator operates the number key to select any dwelling unit number. If the dwell unit 2 corresponding to the dwelling unit number is selected by operating the call button after selection, a communication path is formed between the selected dwelling unit 2 and only the dwelling unit 2 is connected to the dwelling unit 2 by the handset 52. You can make a call. Further, at the time of such a call, the call / broadcast switching unit 57 is switched by the control unit 50 to a state where the amplifier 53b on the transmission side is connected to the call line La via the two-wire / four-line conversion unit 54 and the open / close switch unit 59 Is opened and the lobby intercom 1 is disconnected from the main line L1.

各幹線Ｌ１の終端に設けられる返信装置８（図１では１台のみ図示）は、制御線Ｌｃを介して警報監視盤５から伝送される線路長調査信号に対して返信信号を伝送するものであるが、具体的な構成については従来周知の技術で実現可能であるので、図示並びに説明を省略する。 A reply device 8 (only one is shown in FIG. 1) provided at the end of each trunk line L1 transmits a reply signal to the line length investigation signal transmitted from the alarm monitoring panel 5 via the control line Lc. However, since a specific configuration can be realized by a conventionally known technique, illustration and description are omitted.

幹線制御装置３は、警報監視盤５から引き込まれた通話線Ｌａ並びに制御線Ｌｃとロビーインターホン１から引き込まれた映像線Ｌｂをそれぞれ３系統の幹線Ｌ１に分配するものであって、ＣＰＵを主構成要素とする制御部３０と、各系統毎に一斉放送用音声信号を増幅する合計３つの増幅器３１と、各系統毎に映像信号を増幅する映像用の増幅器（図示せず）とを具備している。制御部３０は、制御線Ｌｃを介して警報監視盤５との間で制御信号を授受する機能と、警報監視盤５から制御信号で指示される増幅度を各増幅器３１に設定する機能とを有している。つまり、本実施形態では増幅器３１が増幅手段に相当し、制御部３０が増幅度制御手段に相当する。 The main line control device 3 distributes the call line La drawn from the alarm monitoring board 5 and the control line Lc and the video line Lb drawn from the lobby intercom 1 to the three main lines L1, respectively. A control unit 30 as a constituent element, a total of three amplifiers 31 for amplifying a broadcast audio signal for each system, and a video amplifier (not shown) for amplifying a video signal for each system are provided. ing. The control unit 30 has a function of transmitting / receiving a control signal to / from the alarm monitoring panel 5 via the control line Lc, and a function of setting the amplification degree indicated by the control signal from the alarm monitoring panel 5 to each amplifier 31. Have. That is, in the present embodiment, the amplifier 31 corresponds to an amplification unit, and the control unit 30 corresponds to an amplification degree control unit.

而して、本システムの施工が完了した時点あるいはシステムに変更が加えられた時点で施工者が線路長調査信号を送信させるための操作釦（図示せず）を操作すると、警報監視盤５の制御部５０は、制御信号送受信部５１を制御して制御線Ｌｃを介して線路長調査信号を送信させるとともに内蔵するタイマを起動する。線路長調査信号には返信装置８に割り当てられた固有のアドレスが含まれているので、アドレスが一致する返信装置８のみが線路長調査信号を受信することになる。線路長調査信号を受信した返信装置８では、受信時点から予め決められた待機時間が経過した後に返信信号を制御線Ｌｃを介して警報監視盤５に返信する。警報監視盤５の制御部５０は、返信装置８から返信された返信信号を制御信号送受信部５１で受信すれば、タイマを停止して線路長調査信号を送信した時点から返信信号を受信した時点までの経過時間を算出するとともに、当該経過時間から前記待機時間を差し引いた時間に基づいて伝送線路（幹線Ｌ１）の線路長（制御線Ｌｃの配線長＝通話線Ｌａの配線長）を求める。ここで制御部５０は、伝送線路の線路長に対応した伝送ロスを補償するのに必要な増幅器５８の増幅度と伝送線路の線路長との対応関係を示したデータテーブルを予め記憶しており、上述のようにして求めた伝送線路の線路長に対応する増幅度をデータテーブルから読み取る。そして、上述の手順で全ての幹線Ｌ１について伝送線路の線路長に対応する増幅度をデータテーブルから読み取ると、制御部５０は、各幹線Ｌ１毎の増幅度を指示する制御信号を制御信号送受信部５１から制御線Ｌｃを介して幹線制御装置３に送信する。かかる制御信号を受信した幹線制御装置３の制御部３０では、各幹線Ｌ１に対応する増幅器３１に対して各々指示された増幅度を設定する。 Thus, when the installer operates an operation button (not shown) for transmitting a track length survey signal when the installation of the system is completed or when the system is changed, the alarm monitoring panel 5 The control unit 50 controls the control signal transmission / reception unit 51 to transmit a line length investigation signal via the control line Lc and starts a built-in timer. Since the line length survey signal includes a unique address assigned to the reply device 8, only the reply device 8 with the matching address receives the line length survey signal. In the reply device 8 that has received the line length survey signal, the reply signal is returned to the alarm monitoring panel 5 via the control line Lc after a predetermined standby time has elapsed from the time of reception. When the control unit 50 of the alarm monitoring panel 5 receives the reply signal returned from the reply device 8, the control signal transmission / reception unit 51 stops the timer and receives the reply signal from the time when the line length investigation signal is transmitted. Elapsed time is calculated, and the line length of the transmission line (main line L1) (wiring length of the control line Lc = wiring length of the communication line La) is obtained based on the time obtained by subtracting the waiting time from the elapsed time. Here, the control unit 50 stores in advance a data table indicating the correspondence between the amplification degree of the amplifier 58 and the line length of the transmission line necessary to compensate for the transmission loss corresponding to the line length of the transmission line. The amplification degree corresponding to the line length of the transmission line obtained as described above is read from the data table. And if the amplification degree corresponding to the line length of a transmission line is read from a data table about all the trunk lines L1 in the above-mentioned procedure, the control part 50 will send the control signal which designates the amplification degree for each trunk line L1 to a control signal transmission / reception part 51 to the main line control device 3 via the control line Lc. The control unit 30 of the trunk line control device 3 that has received such a control signal sets the instructed amplification degree for each amplifier 31 corresponding to each trunk line L1.

次に、本実施形態において警報監視盤５より複数台の住戸機２に対して一斉放送を行う際の警報監視盤５並びに各住戸機２、幹線制御装置３の動作を説明する。まず、一斉放送の開始に当たって管理人が警報監視盤５に設けられた一斉放送開始釦（図示せず）を押操作すると、警報監視盤５では、制御部５０が一斉放送の開始を指示する制御信号（一斉放送開始コマンド）を制御信号送受信部５１から制御線Ｌｃを介して各住戸機２に対して伝送する。 Next, the operation of the alarm monitoring panel 5, each dwelling unit 2, and the trunk line control device 3 when performing simultaneous broadcasting to a plurality of dwelling units 2 from the alarm monitoring panel 5 in the present embodiment will be described. First, when an administrator presses a broadcast start button (not shown) provided on the alarm monitoring panel 5 at the start of the broadcast, the control unit 50 controls the alarm monitoring panel 5 to instruct the start of the broadcast. A signal (broadcast start command) is transmitted from the control signal transmission / reception unit 51 to each dwelling unit 2 via the control line Lc.

警報監視盤５から送信された制御信号は、一斉放送の対象である全ての住戸機２で受信される。制御信号を受信した住戸機２では、主制御部１０が一斉放送開始コマンドに応じて一斉放送開始のための準備を行う。すなわち、主制御部１０は、通話／一斉放送切換部１５を制御して幹線インタフェース部１４に接続された通話路をスピーカ２２に接続する状態に切り換える。 The control signal transmitted from the alarm monitoring panel 5 is received by all the dwelling units 2 that are the target of simultaneous broadcasting. In the dwelling unit 2 that has received the control signal, the main control unit 10 prepares for the start of broadcast in response to the broadcast start command. That is, the main control unit 10 controls the call / broadcast switching unit 15 to switch the communication path connected to the main line interface unit 14 to a state where the speaker 22 is connected.

そして、管理人がハンドセット５２を使って一斉放送を行えば、ハンドセット５２から出力される一斉放送用音声信号が通話／一斉放送切換部５７及び増幅器５８を経て通話線Ｌａに送出される。そして、警報監視盤５から通話線Ｌａを介して伝送される一斉放送用音声信号は、幹線制御装置３において各幹線Ｌ１に分配され、幹線インタフェース部１４から通話／一斉放送切換部１５を介してスピーカ２２へ出力されるのであるが、各伝送線路（幹線Ｌ１）の線路長に対応した伝送ロスが幹線制御装置３の増幅器３１において既に補償されているので、スピーカ２２からは適切な音量で一斉放送の音声が出力されることになる。 When the administrator performs broadcast using the handset 52, the broadcast audio signal output from the handset 52 is sent to the call line La via the call / broadcast switching unit 57 and the amplifier 58. The broadcast broadcast audio signal transmitted from the alarm monitoring panel 5 via the call line La is distributed to each trunk line L1 in the trunk line control device 3, and is sent from the trunk line interface unit 14 via the call / broadcast switching unit 15. Although output to the speaker 22, the transmission loss corresponding to the line length of each transmission line (main line L <b> 1) has already been compensated for in the amplifier 31 of the main line control device 3, so that the speaker 22 simultaneously transmits the sound at an appropriate volume. Broadcast audio is output.

そして、一斉放送を終了するためにハンドセット５２がオンフックされると、警報監視盤５の制御部５０は、一斉放送の終了を指示する制御信号（一斉放送終了コマンド）を制御信号送受信部５１から制御線Ｌｃを介して各住戸機２に対して伝送した後、開閉スイッチ部５９を閉成して待機状態に戻る。また、制御信号を受信した住戸機２では、主制御部１０が通話／一斉放送切換部１５を制御して幹線インタフェース部１４に接続された通話路を通話路切換手段１６に接続する状態に切り換えさせて待機状態に戻る。 When the handset 52 is on-hooked to end the broadcast, the control unit 50 of the alarm monitoring panel 5 controls the control signal (broadcast end command) for instructing the end of the broadcast from the control signal transmission / reception unit 51. After transmitting to each dwelling unit 2 via the line Lc, the open / close switch unit 59 is closed to return to the standby state. Further, in the dwelling unit 2 that has received the control signal, the main control unit 10 controls the call / broadcast switching unit 15 to switch the call path connected to the main line interface unit 14 to a state in which the call path switching unit 16 is connected. To return to the standby state.

上述のように本実施形態によれば、線路長算出手段（警報監視盤５の制御部５０）が線路長調査信号に対して各返信装置８から返信される返信信号に基づいて個々の伝送線路（幹線Ｌ１）の線路長を算出するとともに当該線路長に対応する伝送ロスを補償するのに必要な増幅度を幹線制御装置３に指示し、当該指示に基づいて幹線制御装置３の制御部３０がそれぞれの伝送線路（幹線Ｌ１）における伝送ロスに対応した増幅度を増幅器３１に設定するので、一斉放送装置（警報監視盤５）から各幹線Ｌ１を介して住戸機２に伝送される間に生じる伝送ロスが幹線制御装置３にて補償され、各幹線Ｌ１に接続されている住戸機２間における一斉放送の音量のばらつきを抑えることができる。尚、本出願人は、一斉放送装置（警報監視盤５）から伝送線路を介して伝送するトレーニング信号によって各住戸機２が伝送ロスを推定し、個々の住戸機２が備える音量補正手段において、推定された伝送ロスを補償するようにした集合住宅用インターホンシステムを既に提案しているが、本実施形態によれば、トレーニング信号を送信する送信手段を一斉放送装置に備える必要がなく、また各住戸機２にも伝送ロスを推定する手段や音量補正手段を備える必要がないことから、システム構成の簡素化によるコストダウンが図れるという利点がある。 As described above, according to the present embodiment, each transmission line is calculated based on the return signal sent back from each return device 8 to the line length calculation means (the control unit 50 of the alarm monitoring panel 5). While calculating the line length of (main line L1), the main line control device 3 is instructed to the degree of amplification necessary to compensate the transmission loss corresponding to the line length, and the control unit 30 of the main line control device 3 is based on the instruction. Sets the amplification degree corresponding to the transmission loss in each transmission line (main line L1) in the amplifier 31, so that it is transmitted from the simultaneous broadcasting device (alarm monitoring panel 5) to the dwelling unit 2 via each main line L1. The transmission loss that occurs is compensated for by the trunk line control device 3, and variation in the volume of the broadcast broadcast between the dwelling units 2 connected to each trunk line L1 can be suppressed. In addition, the present applicant estimates the transmission loss by each of the dwelling units 2 from the training signal transmitted through the transmission line from the simultaneous broadcasting device (alarm monitoring panel 5), and in the volume correction means provided in each dwelling unit 2, An intercom system for collective housing that has been compensated for the estimated transmission loss has already been proposed, but according to the present embodiment, it is not necessary to provide the broadcast device with a transmission means for transmitting a training signal, and each Since the dwelling unit 2 does not need to be provided with a means for estimating a transmission loss or a volume correction means, there is an advantage that the cost can be reduced by simplifying the system configuration.

（実施形態２）
本実施形態の集合住宅用インターホンシステムの構成例を図２に示す。但し、本実施形態の基本構成は実施形態１と共通であるので、共通の構成要素には同一の符号を付して説明を省略する。 (Embodiment 2)
The structural example of the intercom system for apartment houses of this embodiment is shown in FIG. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals and description thereof is omitted.

本実施形態においては、幹線Ｌ１の終端に返信装置８が設けられておらず、その代わりに伝送線路に接続されている住戸機２の台数入力を受け付ける台数入力受付部５６が警報監視盤５に設けられている。台数入力受付部５６は０〜９の数字に対応したキーを有するテンキースイッチや複数系統の幹線Ｌ１の何れか１つを選択する選択スイッチなどからなり、例えば、選択スイッチが操作されて何れかの幹線Ｌ１が選択された後に４のキーと６のキーが続けて操作されることで「４６」という数値（台数）の入力を受け付けて制御部５０に渡す機能を有している。 In the present embodiment, the reply device 8 is not provided at the end of the trunk line L1, and a number input reception unit 56 that receives the number input of the dwelling unit 2 connected to the transmission line is provided in the alarm monitoring panel 5 instead. Is provided. The number input reception unit 56 includes a numeric key switch having keys corresponding to numbers 0 to 9 and a selection switch for selecting any one of a plurality of trunk lines L1. After the trunk line L1 is selected, the key 4 and the key 6 are operated in succession to receive an input of a numerical value (number) of “46” and pass it to the control unit 50.

すなわち、本システムの施工が完了した時点あるいはシステムに変更が加えられた時点で、各幹線Ｌ１に接続される住戸機２の台数を知る施工者が台数入力受付部５６の選択スイッチとテンキーを操作して各幹線Ｌ１（伝送線路）毎に住戸機２の接続台数を入力すれば、警報監視盤５の制御部５０は、予め対応関係が示されているデータテーブルを参照して各幹線Ｌ１毎の住戸機２の接続台数に対応した伝送ロスを補償するのに必要な増幅度を読み取って制御信号により幹線制御装置３に指示する。そして、実際の一斉放送時には、伝送線路に接続される住戸機２の台数に対応した伝送ロスが幹線制御装置３の増幅器３１において既に補償されているので、各住戸機２のスピーカ２２からは適切な音量で一斉放送の音声が出力されることになる。但し、幹線Ｌ１から住戸別線Ｌ２を分岐する分岐器７においても一斉放送用音声信号が減衰してしまう可能性があれば、住戸機２の接続台数に分岐器７の接続台数を含めることが望ましい。また、図示はしていないが、幹線Ｌ１を複数系統の幹線Ｌ１に分配する分配器が幹線制御装置３より住戸機２側の幹線Ｌ１に設けられることがあり、分配器においても一斉放送用音声信号が減衰してしまう可能性があれば、住戸機２の接続台数に分配器の接続台数を含めることが望ましい。 That is, when construction of this system is completed or when a change is made to the system, a contractor who knows the number of dwelling units 2 connected to each trunk line L1 operates the selection switch and numeric keypad of the number input reception unit 56. Then, if the number of connected units 2 is input for each trunk line L1 (transmission line), the control unit 50 of the alarm monitoring panel 5 refers to the data table in which the correspondence relationship is shown in advance for each trunk line L1. The degree of amplification necessary to compensate for the transmission loss corresponding to the number of connected dwelling units 2 is read and instructed to the main line control device 3 by a control signal. At the time of actual broadcast, since the transmission loss corresponding to the number of dwelling units 2 connected to the transmission line has already been compensated for in the amplifier 31 of the main line control device 3, it is appropriate from the speaker 22 of each dwelling unit 2 Broadcast sound is output at a high volume. However, if there is a possibility that the broadcast broadcasting audio signal may be attenuated in the branching device 7 that branches from the trunk line L1 to the residential unit separate line L2, the number of connected branching devices 7 may be included in the number of connected units 2. desirable. Although not shown, a distributor for distributing the trunk line L1 to a plurality of trunk lines L1 may be provided on the trunk line L1 on the dwelling unit 2 side from the trunk control device 3, and the broadcast audio is also used in the distributor. If there is a possibility that the signal is attenuated, it is desirable to include the number of connected distributors in the number of connected units 2.

（実施形態３）
本実施形態の集合住宅用インターホンシステムの構成例を図３に示す。但し、本実施形態の基本構成は実施形態１と共通であるので、共通の構成要素には同一の符号を付して説明を省略する。 (Embodiment 3)
The structural example of the intercom system for apartment houses of this embodiment is shown in FIG. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals and description thereof is omitted.

本実施形態においては、幹線Ｌ１の終端に返信装置８が設けられておらず、その代わりに伝送線路に接続されている住戸機２の台数を検出する台数検出手段が各住戸機２に設けられている。台数検出手段は、制御線Ｌｃの線間に接続される固定抵抗（図示せず）と、後述するように幹線制御装置３の制御部３０により各幹線Ｌ１の制御線Ｌｃに一定の直流電流が供給されたときに固定抵抗に流れる電流を検出する電流検出部１９と、電流検出部１９で検出される電流値に基づいて同一の幹線Ｌ１に接続されている住戸機２の台数を算出する主制御部１０とで実現されている。すなわち、各住戸機２の固定抵抗の値が同一であれば、各住戸機２の固定抵抗に流れる電流が各伝送線路（幹線Ｌ１）に接続されている住戸機２の接続台数に応じて減少するので、主制御部１０では電流検出部１９で検出する電流値に基づいて各伝送線路（幹線Ｌ１）に接続されている住戸機２の台数を算出することができる。 In the present embodiment, the reply device 8 is not provided at the end of the trunk line L1, and instead, each dwelling unit 2 is provided with a unit number detecting means for detecting the number of dwelling units 2 connected to the transmission line. ing. The number detection means includes a fixed resistance (not shown) connected between the control lines Lc and a constant DC current applied to the control lines Lc of the main lines L1 by the control unit 30 of the main line control device 3 as will be described later. A main unit that calculates the number of dwelling units 2 connected to the same trunk line L1 based on the current value detected by the current detection unit 19 and the current detection unit 19 when the current flowing through the fixed resistor is supplied. This is realized by the control unit 10. That is, if the value of the fixed resistance of each dwelling unit 2 is the same, the current flowing through the fixed resistance of each dwelling unit 2 decreases according to the number of connected dwelling units 2 connected to each transmission line (main line L1). Therefore, the main control unit 10 can calculate the number of dwelling units 2 connected to each transmission line (main line L1) based on the current value detected by the current detection unit 19.

而して、本システムの施工が完了した時点あるいはシステムに変更が加えられた時点で、警報監視盤５に設けられている接続台数検出釦（図示せず）が施工者によって操作されると、警報監視盤５の制御部５０は、接続台数の検出結果を知らせるように指示するコマンド（制御信号）を任意の住戸機２の住戸番号に対して制御信号送受信部５１から送信させるとともに、幹線制御装置３に対しては接続台数の検出対象である何れかの幹線Ｌ１の制御線Ｌｃに直流電流を供給するように指示するコマンド（制御信号）を制御信号送受信部５１から送信させる。当該住戸番号に一致する住戸機２では、前記コマンドを受け取った主制御部１０が電流検出部１９で検出される電流値を取り込み、当該電流値に基づいて伝送線路（幹線Ｌ１）に接続されている住戸機２の台数を算出するとともに、算出した接続台数を知らせるための制御信号を制御信号送受信部１１から警報監視盤５へ送信させる。当該制御信号を受け取った警報監視盤５の制御部５０は、予め対応関係が示されているデータテーブルを参照して住戸機２の接続台数に対応した伝送ロスを補償するのに必要な増幅度を読み取る。そして、上述の手順で全ての幹線Ｌ１について住戸機２の接続台数に対応する増幅度をデータテーブルから読み取ると、制御部５０は、各幹線Ｌ１毎の増幅度を指示する制御信号を制御信号送受信部５１から制御線Ｌｃを介して幹線制御装置３に送信する。かかる制御信号を受信した幹線制御装置３の制御部３０では、各幹線Ｌ１に対応する増幅器３１に対して各々指示された増幅度を設定する。そして、実際の一斉放送時には、伝送線路に接続される住戸機２の台数に対応した伝送ロスが警報監視盤５の増幅器５８において既に補償されているので、各住戸機２のスピーカ２２からは適切な音量で一斉放送の音声が出力されることになる。但し、分岐器７にも固定抵抗や電流検出部を設け、分岐器７の台数も考慮して増幅器３１の増幅度を設定することが望ましい。 Thus, when the installation of the system is completed or when the system is changed, the connected number detection button (not shown) provided in the alarm monitoring panel 5 is operated by the installer. The control unit 50 of the alarm monitoring panel 5 transmits a command (control signal) instructing to notify the detection result of the number of connected units from the control signal transmission / reception unit 51 to the dwelling unit number of any dwelling unit 2, and performs trunk line control. The control signal transmitting / receiving unit 51 transmits a command (control signal) for instructing the apparatus 3 to supply a direct current to the control line Lc of any trunk line L1 that is the target of detection of the number of connected devices. In the dwelling unit 2 that matches the dwelling unit number, the main control unit 10 that has received the command takes in the current value detected by the current detection unit 19, and is connected to the transmission line (main line L1) based on the current value. The number of dwelling units 2 that are present is calculated, and a control signal for notifying the calculated number of connected units is transmitted from the control signal transmitting / receiving unit 11 to the alarm monitoring panel 5. The control unit 50 of the alarm monitoring panel 5 that has received the control signal refers to a data table in which the correspondence is shown in advance, and the amplification degree necessary to compensate for the transmission loss corresponding to the number of connected dwelling units 2 Read. When the amplification degree corresponding to the number of connected dwelling units 2 is read from the data table for all the trunk lines L1 in the above procedure, the control unit 50 transmits and receives control signals indicating the amplification degree for each trunk line L1. The data is transmitted from the unit 51 to the main line control device 3 via the control line Lc. The control unit 30 of the trunk line control device 3 that has received such a control signal sets the instructed amplification degree for each amplifier 31 corresponding to each trunk line L1. At the time of actual broadcast, since the transmission loss corresponding to the number of dwelling units 2 connected to the transmission line has already been compensated for in the amplifier 58 of the alarm monitoring panel 5, it is appropriate from the speakers 22 of each dwelling unit 2. Broadcast sound is output at a high volume. However, it is desirable that the branching device 7 is also provided with a fixed resistor and a current detection unit, and the amplification degree of the amplifier 31 is set in consideration of the number of the branching devices 7.

（実施形態４）
本実施形態の集合住宅用インターホンシステムの構成例を図４に示す。但し、本実施形態の基本構成は実施形態１と共通であるので、共通の構成要素には同一の符号を付して説明を省略する。 (Embodiment 4)
The structural example of the intercom system for apartment houses of this embodiment is shown in FIG. However, since the basic configuration of the present embodiment is the same as that of the first embodiment, common components are denoted by the same reference numerals and description thereof is omitted.

本実施形態においては、幹線Ｌ１の終端に返信装置８が設けられておらず、その代わりに伝送線路に接続されている住戸機２の台数を検出する台数検出手段が警報監視盤５に設けられている。台数検出手段は、制御部５０並びに制御信号送受信部５１からなり、制御線Ｌｃを介して伝送する制御信号により各幹線Ｌ１毎に当該幹線Ｌ１に接続されている全ての住戸機２をポーリングすることで住戸機２の接続台数を検出するものである。尚、全ての住戸には予め住戸機２が設置されており且つ各住戸機２のアドレス（住戸番号）が警報監視盤５の制御部５０に登録されてはいるが、入居者のいない住戸（空き住戸）の住戸機２は停止状態にあるから、登録されているアドレスの総数と実際に稼働している住戸機２の総数とは必ずしも一致しないので、ポーリングによって稼働中の住戸機２の台数を検出することが可能である。 In the present embodiment, the return device 8 is not provided at the end of the trunk line L1, and a number detection means for detecting the number of dwelling units 2 connected to the transmission line is provided in the alarm monitoring panel 5 instead. ing. The number detection means comprises a control unit 50 and a control signal transmission / reception unit 51, and polls all dwelling units 2 connected to the trunk line L1 for each trunk line L1 by a control signal transmitted via the control line Lc. Thus, the number of connected units 2 is detected. In addition, the dwelling unit 2 is installed in all the dwelling units in advance, and the address (dwelling unit number) of each dwelling unit 2 is registered in the control unit 50 of the alarm monitoring panel 5, but the dwelling unit that has no occupants ( Since the dwelling unit 2 of the vacant dwelling unit is in a stopped state, the total number of registered addresses does not necessarily match the total number of dwelling units 2 that are actually operating. Can be detected.

而して、本システムの運用を開始する時点あるいはシステムに変更が加えられた（例えば、新しく入居した住戸が発生した）時点で、警報監視盤５に設けられている接続台数検出釦（図示せず）が施工者によって操作されると、警報監視盤５の制御部５０は、予め登録されているアドレス（住戸番号）に対して制御信号送受信部５１から制御信号を送信させてポーリングすることで各幹線Ｌ１毎に稼働中の住戸機２の台数（接続台数）を検出するとともに、予め対応関係が示されているデータテーブルを参照して住戸機２の接続台数に対応した伝送ロスを補償するのに必要な増幅度を読み取る。そして、上述の手順で全ての幹線Ｌ１について住戸機２の接続台数に対応する増幅度をデータテーブルから読み取ると、制御部５０は、各幹線Ｌ１毎の増幅度を指示する制御信号を制御信号送受信部５１から制御線Ｌｃを介して幹線制御装置３に送信する。かかる制御信号を受信した幹線制御装置３の制御部３０では、各幹線Ｌ１に対応する増幅器３１に対して各々指示された増幅度を設定する。そして、実際の一斉放送時には、伝送線路に接続される住戸機２の台数に対応した伝送ロスが警報監視盤５の増幅器５８において既に補償されているので、各住戸機２のスピーカ２２からは適切な音量で一斉放送の音声が出力されることになる。但し、分岐器７にも伝送信号の送受信手段を設け、分岐器７の台数も考慮して増幅器５８の増幅度を設定することが望ましい。 Thus, when the operation of this system is started or when a change is made to the system (for example, when a new occupancy is generated), a connected number detection button (not shown) provided on the alarm monitoring panel 5 is shown. Z)) is operated by the installer, the control unit 50 of the alarm monitoring panel 5 transmits a control signal from the control signal transmission / reception unit 51 to a previously registered address (dwelling unit number) for polling. The number of connected dwelling units 2 (the number of connected units) is detected for each main line L1, and a transmission loss corresponding to the number of connected dwelling units 2 is compensated by referring to a data table in which a correspondence relationship is shown in advance. Read the degree of amplification required. When the amplification degree corresponding to the number of connected dwelling units 2 is read from the data table for all the trunk lines L1 in the above procedure, the control unit 50 transmits and receives control signals indicating the amplification degree for each trunk line L1. The data is transmitted from the unit 51 to the main line control device 3 via the control line Lc. The control unit 30 of the trunk line control device 3 that has received such a control signal sets the instructed amplification degree for each amplifier 31 corresponding to each trunk line L1. At the time of actual broadcast, since the transmission loss corresponding to the number of dwelling units 2 connected to the transmission line has already been compensated for in the amplifier 58 of the alarm monitoring panel 5, it is appropriate from the speakers 22 of each dwelling unit 2. Broadcast sound is output at a high volume. However, it is preferable to provide transmission / reception means for the transmission signal in the branching device 7 and to set the amplification degree of the amplifier 58 in consideration of the number of the branching devices 7.

本発明の実施形態１を示すシステム構成図である。1 is a system configuration diagram showing Embodiment 1 of the present invention. 本発明の実施形態２を示すシステム構成図である。It is a system block diagram which shows Embodiment 2 of this invention. 本発明の実施形態３を示すシステム構成図である。It is a system block diagram which shows Embodiment 3 of this invention. 本発明の実施形態４を示すシステム構成図である。It is a system configuration figure showing Embodiment 4 of the present invention.

Explanation of symbols

１ロビーインターホン（共用部装置）
２住戸機
３幹線制御装置
５警報監視盤（一斉放送装置）
８返信装置
２２スピーカ
３０制御部（増幅度制御手段）
３１増幅器（増幅手段） 1 Lobby intercom (common equipment)
2 dwelling unit 3 trunk line control device 5 alarm monitoring panel (simultaneous broadcasting device)
8 Reply device 22 Speaker 30 Control unit (amplification degree control means)
31 Amplifier (amplification means)

Claims

The common unit device that is installed at the common entrance of the apartment house and can input and output voice, and the common unit device that is installed in each dwelling unit of the apartment house is connected via a transmission line and the selection unit that the common unit device has When a visitor is selected by operating a plurality of dwelling units that establish a communication path with the common unit device, and a plurality of trunk lines and a common unit device in which the plurality of dwelling units are branched and connected respectively. The main line control device inserted between the main line and the dwelling unit is connected to each dwelling unit installed in the common section or the manager's room of the apartment house and part or all of the dwelling units A broadcast apparatus that broadcasts audio to the machine all at once, and a reply apparatus that transmits a reply signal to a line length survey signal that is provided at the end of the transmission line and transmitted from the broadcast apparatus via the transmission line. Prepared,
The transmission line includes a plurality of trunk lines and a separate line for each unit branching from the trunk line of each line to each dwelling unit. It consists of a control line that transmits a control signal instructing the start and a communication line that transmits a voice signal.
The dwelling unit has a calling means for making a call with the shared device via a call line, a speaker that rings at least a broadcast sound, a state in which the call line is connected to the calling means, and a state in which the speaker is connected to the speaker. And an individual call / broadcast switching means for selectively switching between and a control means for controlling the individual call / broadcast switching means based on a control signal transmitted via the control line. When a control signal instructing the start of broadcast is received via a line, the individual call / broadcast switching means is controlled to switch the call line to a speaker;
The trunk line control device comprises amplification means for amplifying the broadcast broadcast audio signal for each trunk line, and amplification degree control means for setting the amplification degree previously designated before the start of the broadcast to the amplification means ,
The broadcast apparatus supports line length calculation means for calculating the line length of the transmission line based on the time from when the line length survey signal is transmitted to when the reply signal of the reply device is received, and corresponds to the calculated line length. An intercom system for an apartment house comprising an instruction means for instructing a main line control device of an amplification degree necessary to compensate for transmission loss .

The common unit device that is installed at the common entrance of the apartment house and can input and output voice, and the common unit device that is installed in each dwelling unit of the apartment house is connected via a transmission line and the selection unit that the common unit device has When a visitor is selected by operating a plurality of dwelling units that establish a communication path with the common unit device, and a plurality of trunk lines and a common unit device in which the plurality of dwelling units are branched and connected respectively. The main line control device inserted between the main line and the dwelling unit is connected to each dwelling unit installed in the common section or the manager's room of the apartment house and part or all of the dwelling units Equipped with a broadcast device that broadcasts audio to the machine all at once,
The transmission line includes a plurality of trunk lines and a separate line for each unit branching from the trunk line of each line to each dwelling unit. It consists of a control line that transmits a control signal instructing the start and a communication line that transmits a voice signal.
The dwelling unit has a calling means for making a call with the shared device via a call line, a speaker that rings at least a broadcast sound, a state in which the call line is connected to the calling means, and a state in which the speaker is connected to the speaker. An individual call / broadcast switching means for selectively switching, a control means for controlling the individual call / broadcast switching means based on a control signal transmitted via the control line, and a dwelling unit connected to the transmission line And a control unit for controlling the individual call / broadcast switching unit to control the call line when receiving a control signal instructing the start of the broadcast through the control line. When switching to a state of connection to the speaker and receiving a control signal for inquiring the number of connections via the control line, the number of connections detected by the number detection means is transmitted to the simultaneous broadcasting device,
The trunk line control device comprises amplification means for amplifying the broadcast broadcast audio signal for each trunk line, and amplification degree control means for setting the amplification degree previously designated before the start of the broadcast to the amplification means,
The simultaneous broadcasting apparatus includes an instruction means for instructing the main line control apparatus of an amplification degree necessary to compensate for a transmission loss corresponding to the number of connected dwelling units informed by a control signal from the dwelling unit. collection if residential intercom system.