JP2664301B2 - Data transmission method - Google Patents
Data transmission methodInfo
- Publication number
- JP2664301B2 JP2664301B2 JP27408391A JP27408391A JP2664301B2 JP 2664301 B2 JP2664301 B2 JP 2664301B2 JP 27408391 A JP27408391 A JP 27408391A JP 27408391 A JP27408391 A JP 27408391A JP 2664301 B2 JP2664301 B2 JP 2664301B2
- Authority
- JP
- Japan
- Prior art keywords
- slave
- data
- communication device
- circuit
- station
- 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.)
- Expired - Fee Related
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Description
【０００１】[0001]
【産業上の利用分野】本発明はデータ伝送方式に係わ
り、特に主局通信装置から従局通信装置へ送出されるパ
ルス列を送信データで変調し、主局通信装置へ送出する
データ伝送方式に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data transmission system, and more particularly to a data transmission system in which a pulse train transmitted from a master station communication device to a slave station communication device is modulated with transmission data and sent to the master station communication device.
【０００２】[0002]
【従来の技術および発明が解決しようとする課題】従来
のデータ伝送方式は図３に示すように、主局送信回路
１、主局受信回路２、データ変調回路３、パルス発生回
路４及び主局ＣＰＵ５を設けた主局通信装置ＭＱ11と、
従局送信回路１１、従局受信回路１２、データ変調回路
１３、パルス発生回路１４及び従局ＣＰＵ１５を設けた
従局通信装置ＳＱ11、ＳＱ12・・・・・・との間で行われるデ
ータ伝送方式である。2. Description of the Related Art As shown in FIG. 3, a conventional data transmission system employs a main station transmission circuit 1, a main station reception circuit 2, a data modulation circuit 3, a pulse generation circuit 4, and a main station transmission circuit. a master station communication device MQ 11 provided with a CPU 5,
This is a data transmission method performed between the slave communication devices SQ 11 , SQ 12, ... Provided with the slave transmission circuit 11, the slave reception circuit 12, the data modulation circuit 13, the pulse generation circuit 14, and the slave CPU 15. .
【０００３】主局通信装置ＭＱ11の主局送信回路１は出
力側が主局送信端子Ｔ1と接続され、入力側はデータ変
調回路３の出力側に接続される。また、データ変調回路
３の入力側はパルス発生回路４と接続され、主局送信回
路１、データ変調回路３及びパルス発生回路４の制御側
は主局ＣＰＵ５と接続される。更に、入力側が主局受信
端子Ｔ2に接続された復調機能を有する主局受信回路２
の出力側は主局ＣＰＵ５のデータ入力側と接続される。The output side of the main station transmission circuit 1 of the main station communication device MQ 11 is connected to the main station transmission terminal T 1, and the input side is connected to the output side of the data modulation circuit 3. The input side of the data modulation circuit 3 is connected to the pulse generation circuit 4, and the control side of the main station transmission circuit 1, the data modulation circuit 3 and the pulse generation circuit 4 is connected to the main station CPU 5. Furthermore, the main station receiver circuit 2 having an input side connected to the main station receive terminal T 2 demodulation functional
Is connected to the data input side of the main station CPU5.
【０００４】従局通信装置ＳＱ11、ＳＱ12・・・・・・の従局
送信回路１１は出力側が従局送信端子Ｔ4と接続され、
入力側はデータ変調回路１３の出力側に接続される。ま
た、データ変調回路１３の入力側はパルス発生回路１４
と接続され、従局送信回路１１、データ変調回路１３及
びパルス発生回路１４の制御側は従局ＣＰＵ１５と接続
される。更に、入力側が従局受信端子Ｔ3に接続された
復調機能を有する従局受信回路１２の出力側は従局ＣＰ
Ｕ１５のデータ入力側と接続される。The slave transmission circuits 11 of the slave communication devices SQ 11 , SQ 12 ... Are connected on the output side to a slave transmission terminal T 4 ,
The input side is connected to the output side of the data modulation circuit 13. The input side of the data modulation circuit 13 is connected to a pulse generation circuit 14.
The control side of the slave transmission circuit 11, the data modulation circuit 13, and the pulse generation circuit 14 is connected to the slave CPU 15. Further, the output side of the slave receiving circuit 12 having the demodulation function whose input side is connected to the slave receiving terminal T 3 is connected to the slave CP.
Connected to the data input side of U15.
【０００５】ここで、主局通信装置ＭＱ11から従局通信
装置ＳＱ11、ＳＱ12・・・・・・にデータを送信するには、ま
ず、アドレス信号を送出して従局通信装置ＳＱ11、ＳＱ
12・・・・・・を特定する。その後で、パルス発生回路４から
送出されるパルス列を主局ＣＰＵ５の制御によりデータ
変調回路３で変調し主局送信回路１から主局送信端子Ｔ
1を介して特定された従局通信装置ＳＱ11の従局受信端
子Ｔ3へ送出する。従局通信装置ＳＱ11は従局受信端子
Ｔ3に入力されたデータを従局受信回路１２で復調し従
局ＣＰＵ１５へ送出する。従局ＣＰＵ１５はこのデータ
を解読し、例えば応答動作の時はレスポンスデータをデ
ータ変調回路１３で生成し従局送信回路１１を介して主
局通信装置ＭＱ11へ返送する。ここで、主局通信装置Ｍ
Ｑ11をナースコール装置の主装置とすれば従局通信装置
ＳＱ11、ＳＱ12・・・・・・はベッド子機となり相互の通信が
このデータ伝送方式でおこなわれる。[0005] Here, to transmit data to the slave station communication devices SQ 11, SQ 12 ······ from the master station communication device MQ 11, first, the slave station communication devices SQ 11 by sending an address signal, SQ
12 ... is specified. After that, the pulse train sent from the pulse generation circuit 4 is modulated by the data modulation circuit 3 under the control of the main station CPU 5, and the main station transmission circuit 1 transmits the pulse train to the main station transmission terminal
Through 1 and sends it to the slave station receiving terminal T 3 of the slave station communication devices SQ 11 identified. The slave communication device SQ 11 demodulates the data input to the slave receiving terminal T 3 by the slave receiving circuit 12 and sends it to the slave CPU 15. The slave CPU 15 decodes this data, and, for example, at the time of a response operation, generates response data in the data modulation circuit 13 and returns the response data to the master station communication device MQ 11 via the slave transmission circuit 11. Here, the master station communication device M
If the Q 11 and the main unit of the nurse call system slave station communication devices SQ 11, SQ 12 ······ mutual communication becomes bed handset is carried out in the data transmission method.
【０００６】上記データ伝送方式では主局通信装置ＭＱ
11にパルス発生回路４を従局通信装置ＳＱ11、ＳＱ12・・
・・・・にパルス発生回路１４・・・・・・をそれぞれ設けなけれ
ばならないので、回路のコストが高くなる等の難点があ
る。In the above data transmission method, the main station communication device MQ
11 is connected to the slave station communication devices SQ 11 , SQ 12.
.. Must be provided with the respective pulse generating circuits 14,...
【０００７】[0007]
【発明の目的】本発明は上述した難点に鑑みなされたも
ので、主局通信装置に複数の従局通信装置をバス方式で
接続し、主局通信装置から送出されるアドレス信号と一
致した従局通信装置は主局通信装置からアドレス信号に
引続いて送出されるパルス列を送信データで変調し、主
局通信装置へ送出することにより、従局通信装置に設け
たパルス発生回路を削除し、回路コストが軽減できるデ
ータ伝送方式を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a plurality of slave communication apparatuses are connected to a master communication apparatus by a bus system, and a slave communication apparatus which matches an address signal transmitted from the master communication apparatus. The device modulates a pulse train transmitted following the address signal from the master station communication device with transmission data, and transmits the modulated signal to the master station communication device, thereby eliminating the pulse generation circuit provided in the slave station communication device and reducing the circuit cost. It is an object of the present invention to provide a data transmission method that can be reduced.
【０００８】[0008]
【課題を解決するための手段】本発明によるデータ伝送
方式は、主局通信装置に複数の従局通信装置をバス方式
で接続し、主局通信装置から送出されるアドレス信号と
一致した従局通信装置は主局通信装置からアドレス信号
に引続いて送出されるパルス列を送信データで変調し、
主局通信装置へ送出する方式である。According to the data transmission method of the present invention, a plurality of slave communication apparatuses are connected to a master communication apparatus by a bus system, and a slave communication apparatus which matches an address signal transmitted from the master communication apparatus. Modulates a pulse train transmitted from the master station communication device following the address signal with transmission data,
This is a method of sending to the master station communication device.
【０００９】[0009]
【発明の作用】主局通信装置に複数の従局通信装置をバ
ス方式で接続し、主局通信装置から送出されるアドレス
信号でデータ送信側の従局通信装置を特定する。主局通
信装置はアドレス信号に引続いてパルス列を従局通信装
置へ送出し従局通信装置はこのパルス列を送信データで
変調し、主局通信装置へ送出する。A plurality of slave communication devices are connected to the master communication device in a bus system, and the slave communication device on the data transmitting side is specified by an address signal transmitted from the master communication device. The master station communication device sends a pulse train to the slave station communication device following the address signal, and the slave station communication device modulates this pulse train with transmission data and sends it to the master station communication device.
【００１０】これにより、従局通信装置に設けたパルス
発生回路を削除し、回路コストの軽減を図る。Thus, the pulse generation circuit provided in the slave station communication device is eliminated, and the circuit cost is reduced.
【００１１】[0011]
【実施例】以下、本発明によるデータ伝送方式の一実施
例を図１、図２に従って詳述する。本発明によるデータ
伝送方式は、図１に示すように、主局送信回路１、主局
受信回路２、データ変調回路３、パルス発生回路４及び
主局ＣＰＵ５を設けた主局通信装置ＭＱ1と、従局送信
回路７、従局受信回路６、データ変調回路８及びアドレ
スデータ記憶回路９が接続された従局ＣＰＵ１０を設け
た従局通信装置ＳＱ1、ＳＱ2・・・・・・との間で行われるデ
ータ伝送方式である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a data transmission system according to the present invention will be described below in detail with reference to FIGS. As shown in FIG. 1, the data transmission system according to the present invention employs a master station communication device MQ 1 including a master station transmission circuit 1, a master station reception circuit 2, a data modulation circuit 3, a pulse generation circuit 4 and a master station CPU 5. , data between the slave station transmitting circuit 7, the slave station receiving circuit 6, the slave station communication devices data modulation circuit 8 and the address data storage circuit 9 is provided with a slave CPU10 connected SQ1, SQ 2 · · · · · · Transmission method.
【００１２】主局通信装置ＭＱ1の主局送信回路１は出
力側が伝送路Ｌ1に接続された主局送信端子Ｔ1と接続さ
れ、入力側はデータ変調回路３の出力側に接続される。
また、データ変調回路３の入力側はパルス発生回路４と
接続され、主局送信回路１、データ変調回路３及びパル
ス発生回路４の制御側は主局ＣＰＵ５と接続される。更
に、入力側が伝送路Ｌ2に接続された主局受信端子Ｔ2と
接続され、かつ、復調機能を有する主局受信回路２の出
力側は主局ＣＰＵ５のデータ入力側と接続される。An output side of the main station transmission circuit 1 of the main station communication device MQ 1 is connected to a main station transmission terminal T 1 connected to the transmission line L 1 , and an input side is connected to the output side of the data modulation circuit 3. .
The input side of the data modulation circuit 3 is connected to the pulse generation circuit 4, and the control side of the main station transmission circuit 1, the data modulation circuit 3 and the pulse generation circuit 4 is connected to the main station CPU 5. Further, the input side is connected to the main station receiving terminal T 2 connected to the transmission line L 2 , and the output side of the main station receiving circuit 2 having a demodulation function is connected to the data input side of the main station CPU 5.
【００１３】従局通信装置ＳＱ1、ＳＱ2・・・・・・の従局送
信回路７は出力側が伝送路Ｌ1に接続された従局送信端
子Ｔ4と接続され、入力側はデータ変調回路８の出力側
に接続される。また、データ変調回路８の入力側は従局
受信端子Ｔ3と接続され、従局送信回路７及びデータ変
調回路８の制御側は従局ＣＰＵ１０と接続される。更
に、入力側が伝送路Ｌ2に接続された従局受信端子Ｔ3に
接続され、かつ、復調機能を有する従局受信回路６の出
力側は従局ＣＰＵ１０のデータ入力側と接続される。
ここで、主局通信装置ＭＱ1が従局通信装置ＳＱ1、ＳＱ
2・・・・・・からデータを受信するには、図２に示すように
主局通信装置ＭＱ1から従局通信装置ＳＱ1、ＳＱ2・・・・・
・へスタートビットＳＴとアドレスＡｄｓからなるアド
レスデータＡＤとイベントデータＥＤを送出し、引続い
て主局パルス列ＭＰＳを主局送信端子Ｔ1を介して従局
通信装置ＳＱ1、ＳＱ2・・・・・・の従局受信端子Ｔ3へ送出
する。従局通信装置ＳＱ1、ＳＱ2・・・・・・の内、受信した
アドレスデータＡＤのアドレスＡｄｓがアドレスデータ
記憶回路９のアドレスＡｄｓと一致した従局通信装置Ｓ
Ｑ1は引続いて受信したイベントデータＥＤを復調機能
を有する従局受信回路６で復調し、データ変調回路８及
び従局送信回路７を従局ＣＰＵ１０で制御する。従局送
信回路７は従局ＣＰＵ１０の制御により伝送路Ｌ2を一
定時間閉路してから開路するアテンシヨン信号ＡＴＤを
伝送路Ｌ1から入力される主局パルス列ＭＰＳで生成し
従局送信端子Ｔ4へ送出する。このアテンシヨン信号Ａ
ＴＤは主局通信装置ＭＱ1へ従局データＳＤＴが送出さ
れることを知らせる信号で主局通信装置ＭＱ1から送出
されるスタートビットＳＴに相当する。従局データＳＤ
Ｔを送出してから主局通信装置ＭＱ1から送信された主
局パルス列ＭＰＳをデータ変調回路８で変調し、主局通
信装置ＭＱ1へ送出する。主局通信装置ＭＱ1は主局受信
回路２のＣＰＵ５で主局出力側は主局ＣＰＵ５で従局デ
ータＳＤＴを解読し、次の、従局通信装置ＳＱ2・・・・・・
から同様な従局データＳＤＴを受信さる。なお、アドレ
スデータ記憶回路９のアドレスＡｄｓが不一致の従局通
信装置ＳＱ2・・・・・・は以降に送出されるイベントデータ
ＥＤを受信せず、つぎの周期でアドレスＡｄｓが一致し
たとき従局データＳＤＴを送信する。主局通信装置ＭＱ
1は従局データＳＤＴの送信元を周期により判別するの
で送信元を誤判別するような事態はおこらない。The slave transmission circuits 7 of the slave communication devices SQ 1 , SQ 2 ... Are connected on the output side to a slave transmission terminal T 4 connected to the transmission line L 1 , and the input side of the data modulation circuit 8. Connected to output side. The input side of the data modulation circuit 8 is connected to the slave receiving terminal T 3, and the control sides of the slave transmission circuit 7 and the data modulation circuit 8 are connected to the slave CPU 10. Further, an input side connected to the connected slave station receiving terminal T 3 to the transmission line L 2, and the output side of the slave station receiving circuit 6 having a demodulation function is connected to the data input of slave CPU 10.
Here, the master station communication device MQ 1 is connected to the slave station communication devices SQ 1 , SQ
2 to receive data from the master station communication device MQ 1 to the slave station communication devices SQ 1 , SQ 2 ... As shown in FIG.
The address data AD including the start bit ST and the address Ads and the event data ED are sent out, and the master station pulse train MPS is subsequently sent via the master station transmission terminal T1 to the slave station communication devices SQ 1 , SQ 2. · to delivery to the slave station receiving terminal T 3. Among the slave communication devices SQ 1 , SQ 2, ..., The slave communication device S whose address “Ads” of the received address data AD matches the address “Ads” of the address data storage circuit 9.
In Q 1, the received event data ED is demodulated by the slave receiving circuit 6 having a demodulating function, and the data modulation circuit 8 and the slave transmitting circuit 7 are controlled by the slave CPU 10. Slave transmission circuit 7 generates and sends at master station pulse train MPS input the Atenshiyon signal ATD to open from the closed certain time the transmission path L 2 under the control of slave stations CPU10 from the transmission line L 1 to the slave station transmitting terminal T 4 . This attention signal A
TD corresponds to the start bit ST is transmitted from the main station communication apparatus MQ 1 a signal informing that the slave station data SDT is transmitted to the main station communication apparatus MQ 1. Slave data SD
The master station pulse train MPS transmitted from the main station communication apparatus MQ 1 after sending the T modulated by data modulation circuit 8, and sends to the master station communication device MQ 1. The master station communication device MQ 1 mainly station output side CPU 5 of the main station receiver circuit 2 decodes the slave data SDT in master station CPU 5, the following slave station communication devices SQ 2 · · · · · ·
Receive the same slave station data SDT from. Note that the slave communication devices SQ 2 ..., In which the addresses Ads of the address data storage circuit 9 do not match, do not receive the event data ED transmitted thereafter, and when the addresses Ads match in the next cycle, the slave data Send SDT. Master station communication device MQ
In the case of 1, the source of the slave station data SDT is determined based on the cycle, so that a situation in which the source is incorrectly determined does not occur.
【００１４】なお、イベントデータＥＤには従局通信装
置ＳＱ1、ＳＱ2・・・・・・の回路動作、例えばスピーカの電
源オン、保守命令等がコマンドとして含まれることがあ
る。上記実施例における変調はＡＭ、ＦＭ、ＰＭ等の方
法でおこなつてもよい。Incidentally, the event data ED may include, as commands, circuit operations of the slave station communication devices SQ 1 , SQ 2 ... The modulation in the above embodiment may be performed by a method such as AM, FM, PM, or the like.
【００１５】[0015]
【発明の効果】以上の実施例から明らかなように、本発
明によるデータ伝送方式は、主局通信装置に複数の従局
通信装置をバス方式で接続し、主局通信装置から送出さ
れるアドレス信号と一致した従局通信装置は主局通信装
置からアドレス信号に引続いて送出されるパルス列を送
信データで変調し、主局通信装置へ送出する方式である
から、従局通信装置に設けたパルス発生回路を削除し、
回路コストが軽減できる効果がある。As is clear from the above embodiments, the data transmission system according to the present invention connects a plurality of slave communication devices to a master communication device in a bus system, and transmits an address signal transmitted from the master communication device. Since the slave communication device that matches with the above method modulates a pulse train transmitted following the address signal from the master communication device with transmission data and sends it to the master communication device, the pulse generation circuit provided in the slave communication device is used. And remove
This has the effect of reducing circuit cost.
【図１】本発明によるデータ伝送方式を適用する主局通
信装置と従局通信装置の一実施例を示すブロック図。FIG. 1 is a block diagram showing an embodiment of a master station communication apparatus and a slave station communication apparatus to which a data transmission system according to the present invention is applied.
【図２】本発明によるデータ伝送方式に係わる主局通信
装置と従局通信装置のデータを示す図。FIG. 2 is a diagram showing data of a master station communication device and a slave station communication device according to the data transmission method according to the present invention.
【図３】従来のデータ伝送方式を適用する主局通信装置
と従局通信装置のブロック図。FIG. 3 is a block diagram of a master station communication apparatus and a slave station communication apparatus to which a conventional data transmission method is applied.
３・・・・・・データ変調回路 ４・・・・・・パルス発生回路 ８・・・・・・データ変調回路 ＭＱ1・・・・・・主局通信装置 ＳＱ1、ＳＱ2・・・・・・従局通信装置3 Data modulation circuit 4 Pulse generation circuit 8 Data modulation circuit MQ 1 Master communication device SQ 1 , SQ 2 ... Slave station communication device
Claims (1)
方式で接続し、前記主局通信装置から送出されるアドレ
ス信号と一致した前記従局通信装置は前記主局通信装置
からアドレス信号に引続いて送出されるパルス列を送信
データで変調し、前記主局通信装置へ送出することを特
徴とするデータ伝送方式。1. A plurality of slave communication devices are connected to a master communication device in a bus system, and the slave communication device that matches an address signal sent from the master communication device converts the slave communication device into an address signal from the master communication device. A data transmission method characterized in that a continuously transmitted pulse train is modulated with transmission data and transmitted to the master station communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27408391A JP2664301B2 (en) | 1991-10-22 | 1991-10-22 | Data transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27408391A JP2664301B2 (en) | 1991-10-22 | 1991-10-22 | Data transmission method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05114907A JPH05114907A (en) | 1993-05-07 |
| JP2664301B2 true JP2664301B2 (en) | 1997-10-15 |
Family
ID=17536746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27408391A Expired - Fee Related JP2664301B2 (en) | 1991-10-22 | 1991-10-22 | Data transmission method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2664301B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4851147A (en) * | 1987-02-26 | 1989-07-25 | Finetex, Inc. | Transparent combination soap-synthetic detergent bar |
-
1991
- 1991-10-22 JP JP27408391A patent/JP2664301B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05114907A (en) | 1993-05-07 |
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