JPH0265441A - Data transmitter for multiple dwelling house - Google Patents
Data transmitter for multiple dwelling houseInfo
- Publication number
- JPH0265441A JPH0265441A JP21658188A JP21658188A JPH0265441A JP H0265441 A JPH0265441 A JP H0265441A JP 21658188 A JP21658188 A JP 21658188A JP 21658188 A JP21658188 A JP 21658188A JP H0265441 A JPH0265441 A JP H0265441A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- data transmission
- load impedance
- output transformer
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
Landscapes
- Dc Digital Transmission (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、バス型平衡データ伝送路を用いて中央制御装
置と各住戸端末が通信を行う集合住宅用データ伝送装置
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a data transmission device for an apartment complex in which a central control unit and each dwelling unit terminal communicate using a bus-type balanced data transmission path.
従来の技術
第２図は、従来の集合住宅用データ伝送装置を示し、中
央処理装置２１と住戸端末２３ｂ、２３ｃはそれぞれ、
出力トランス２５ａ、 ２５ｂ、２５ｃを備え、この出
力トランス２５ａ、 ２５ｂ、２６ｃを介して２線のバ
ス型の伝送路２２に並列に接続され、２線の伝送路２２
の望ましくは中点に負荷インピーダンス２４が接続され
ている。BACKGROUND ART FIG. 2 shows a conventional data transmission device for an apartment complex, in which a central processing unit 21 and housing unit terminals 23b and 23c each have a
It is equipped with output transformers 25a, 25b, and 25c, and is connected in parallel to the two-wire bus-type transmission line 22 via the output transformers 25a, 25b, and 26c.
A load impedance 24 is connected preferably to the midpoint of the.
上記構成において、中央処理装置２１と住戸端末２３ｂ
、２３ｃはそれぞれ、出力トランス２（５ａ、２５ｂ、
２５ｃの合成インピーダンスの充放電によりデータを伝
送路２２に伝送する。In the above configuration, the central processing unit 21 and the dwelling unit terminal 23b
, 23c are the output transformers 2 (5a, 25b,
Data is transmitted to the transmission path 22 by charging and discharging the composite impedance 25c.
発明が解決しようとする課題
しかしながら、上記従来の集合住宅用データ伝送装置で
は、出力トランス２５ａ、 ２ＥＳｌ）、２５ｃの合成
インピーダンスの充放電によりデータを伝送路２２に伝
送するので、第３図に示すように、信号の波形が歪むと
いう問題点がある。Problems to be Solved by the Invention However, in the conventional data transmission device for apartment buildings, data is transmitted to the transmission line 22 by charging and discharging the combined impedance of the output transformers 25a, 2ESl), and 25c, so that the data transmission device as shown in FIG. However, there is a problem in that the signal waveform is distorted.
尚、上記波形の歪みは、負荷インピーダンス２４の値を
小さくすることにより少なくすることができるが、この
場合には、伝送路２２０線路抵抗との分圧により伝送距
離が短くなるという問題点がある。Note that the distortion of the waveform described above can be reduced by reducing the value of the load impedance 24, but in this case, there is a problem that the transmission distance is shortened due to voltage division with the line resistance of the transmission line 220. .
更に、負荷インピーダンス２４が伝送路２２の中点に接
続されない場合には更に伝送距離が短くなり、集合住宅
における設置工事が面倒であるという問題点がある。Furthermore, if the load impedance 24 is not connected to the midpoint of the transmission line 22, the transmission distance will be further shortened, and installation work in an apartment complex will be troublesome.
本発明は上記従来の問題点て鑑み、長距離伝送が可能で
あり、また、集合住宅における設置工事が簡単な集合住
宅用データ伝送装置を提供することを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, it is an object of the present invention to provide a data transmission device for an apartment complex that is capable of long-distance transmission and that can be easily installed in an apartment complex.
課題を解決するための手段
本発明は上記目的を達成するために、伝送路と出力トラ
ンスの間に接続された負荷インピーダンスをそれぞれ中
央制御装置と住戸端末に設けたものである。Means for Solving the Problems In order to achieve the above object, the present invention provides load impedances connected between the transmission line and the output transformer in the central control unit and the dwelling unit terminal, respectively.
作用
本発明は上記構成により、負荷インピーダンスを中央制
御装置と住戸端末に分散配置して信号の波形歪みを少な
くしたので、長距離伝送が可能となり、また、従来例の
ように負荷インピーダンスを伝送路の中点に接続する必
要がないので、集合住宅における設置工事が簡単となる
。According to the above configuration, the present invention reduces signal waveform distortion by distributing the load impedance between the central control unit and the residential unit terminals, thereby enabling long-distance transmission. Since there is no need to connect to the midpoint of
実施例
以下、図面を参照して本発明の詳細な説明する。第１図
は、本発明に係る集合住宅用データ伝送装置の一実施例
を示すブロック図である。EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a data transmission device for an apartment complex according to the present invention.
第１図において、１１は中央制御装置であり、この中央
制御装置１１は、充放電によりデータを伝送するための
出力トランス１２ａと、通話を行うための通話インタフ
ェース（Ｉ／Ｆ）１３ａを備えている。In FIG. 1, 11 is a central control device, and this central control device 11 is equipped with an output transformer 12a for transmitting data by charging and discharging, and a call interface (I/F) 13a for making calls. There is.
出力トランス１２ａの２次側は、負荷インピーダンス１
４ａが並列に接続されるとともに、２線のバス型のデー
タ伝送路１６に接続され、通話インタフェース１３ａは
２線の通話路１６と、集合住宅の共同玄関や管理人室に
設置される共用部１７に接続されている。The secondary side of the output transformer 12a has a load impedance of 1
4a are connected in parallel and connected to a two-wire bus-type data transmission line 16, and the call interface 13a is connected to the two-wire call line 16 and a common area installed in the common entrance or manager's room of an apartment complex. 17.
１８はそれぞれ、集合住宅の各住戸に設置される住戸端
末であり、住戸端末１８はそれぞれ、充放電によりデー
タを伝送するための出力トランス１２ｂと、通話を行う
ための通話インタフェース（Ｉ／Ｆ）１３ｂを備え、出
力トランス１２ｂの２次側は、負荷インピーダンス１４
ｂが並列に接続されるとともにデータ伝送路１６に接続
され、通話インタフェース１３ｂは通話路１６に接続さ
れている。18 is a housing unit terminal installed in each housing unit of the apartment complex, and each housing unit terminal 18 includes an output transformer 12b for transmitting data by charging and discharging, and a call interface (I/F) for making a phone call. 13b, and the secondary side of the output transformer 12b has a load impedance 14.
b are connected in parallel and connected to the data transmission line 16, and the telephone communication interface 13b is connected to the telephone communication line 16.
上記構成において、中央制御装置１１、住戸端末１８が
それぞれ出力トランス１２ａ１１２ｂの充放電により信
号をデータ伝送路１６に伝送した場合、各負荷インピー
ダンス１４ａ、１４ｂとデータ伝送路１５０線路抵抗と
の分圧により、第３図に示すような波形歪みを少なくす
ることができ、したがって、長距離伝送が可能となる。In the above configuration, when the central control device 11 and the residential unit terminal 18 each transmit a signal to the data transmission line 16 by charging and discharging the output transformer 12a112b, the voltage division between each load impedance 14a, 14b and the line resistance of the data transmission line 150 , waveform distortion as shown in FIG. 3 can be reduced, and long-distance transmission becomes possible.
また、中央制御装置１１、住戸端末１８がそれぞれ負荷
インピーダンス１４ａ 、 １４ｂを備工ているので、
従来例のように負荷インピーダンスをデータ伝送路１５
の中点に接続する必要がなくなり、したがって、集合住
宅における設置工事が簡単になる。In addition, since the central control device 11 and the residential unit terminal 18 are each equipped with load impedances 14a and 14b,
As in the conventional example, the load impedance is connected to the data transmission line 15.
It is no longer necessary to connect to the midpoint of the terminal, thus simplifying the installation work in an apartment complex.
発明の詳細
な説明したように、本発明は、伝送路と出力トランスの
間に接続された負荷インピーダンスをそれぞれ中央制御
装置と住戸端末に分散配置して信号の波形歪みを少なく
したので、長距離伝送が可能となり、また、従来例のよ
うに負荷インピーダンスを伝送路の中点に接続する必要
がないので、集合住宅におけろ設置工事が簡単となる。As described in detail, the present invention reduces signal waveform distortion by distributing the load impedances connected between the transmission line and the output transformer to the central control unit and the residential unit terminals, respectively. In addition, since there is no need to connect the load impedance to the midpoint of the transmission path as in the conventional example, installation work in an apartment complex becomes easy.
第１図は、本発明に係る集合住宅用データ伝送装置の一
実施例を示すブロック図、第２図は、従来の集合住宅用
データ伝送装置を示すブロック図、第３図は、伝送信号
を示す波形図である。
１１・・・中央処理装置、１２ａ、１２ｂ・・・出力ト
ランス、１４ａ、１４ｂ・・・負荷インピーダンス、１
５・・・データ伝送路。
代理人の氏名 弁理士 粟 野 重 孝 ばか１名第
図
＠２Ｂ
第FIG. 1 is a block diagram showing an embodiment of a data transmission device for apartment complexes according to the present invention, FIG. 2 is a block diagram showing a conventional data transmission device for apartment complexes, and FIG. 3 shows transmission signals. FIG. 11...Central processing unit, 12a, 12b...Output transformer, 14a, 14b...Load impedance, 1
5...Data transmission path. Name of agent Patent attorney Shigetaka Awano Idiot 1 Figure @2B
Claims (1)
と前記出力トランスの間に接続された負荷インピーダン
スをそれぞれ中央制御装置と住戸端末に設けた集合住宅
用データ伝送装置。A data transmission device for an apartment complex, which includes an output transformer for transmitting a signal to a transmission line, and a load impedance connected between the transmission line and the output transformer, provided in a central control unit and a residential unit terminal, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21658188A JPH0265441A (en) | 1988-08-31 | 1988-08-31 | Data transmitter for multiple dwelling house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21658188A JPH0265441A (en) | 1988-08-31 | 1988-08-31 | Data transmitter for multiple dwelling house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0265441A true JPH0265441A (en) | 1990-03-06 |
Family
ID=16690660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21658188A Pending JPH0265441A (en) | 1988-08-31 | 1988-08-31 | Data transmitter for multiple dwelling house |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0265441A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923163A3 (en) * | 1997-12-13 | 2004-10-13 | Weidmüller Interface GmbH & Co. | Bus system arrangement, in particular for measuring apparatuses |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169458A (en) * | 1980-05-30 | 1981-12-26 | Hitachi Ltd | Pulse signal transmission and reception circuit |
| JPS58105655A (en) * | 1981-12-18 | 1983-06-23 | Hitachi Ltd | Pulse signal transmitting-receiving circuit |
-
1988
- 1988-08-31 JP JP21658188A patent/JPH0265441A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169458A (en) * | 1980-05-30 | 1981-12-26 | Hitachi Ltd | Pulse signal transmission and reception circuit |
| JPS58105655A (en) * | 1981-12-18 | 1983-06-23 | Hitachi Ltd | Pulse signal transmitting-receiving circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0923163A3 (en) * | 1997-12-13 | 2004-10-13 | Weidmüller Interface GmbH & Co. | Bus system arrangement, in particular for measuring apparatuses |
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