JPS58141047A - Transmission system - Google Patents

Transmission system

Info

Publication number
JPS58141047A
JPS58141047A JP57023902A JP2390282A JPS58141047A JP S58141047 A JPS58141047 A JP S58141047A JP 57023902 A JP57023902 A JP 57023902A JP 2390282 A JP2390282 A JP 2390282A JP S58141047 A JPS58141047 A JP S58141047A
Authority
JP
Japan
Prior art keywords
sampling
data
transmission
constitution
time
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.)
Granted
Application number
JP57023902A
Other languages
Japanese (ja)
Other versions
JPH0216071B2 (en
Inventor
Kazuo Adachi
安達 和夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP57023902A priority Critical patent/JPS58141047A/en
Publication of JPS58141047A publication Critical patent/JPS58141047A/en
Publication of JPH0216071B2 publication Critical patent/JPH0216071B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C15/00Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path
    • G08C15/06Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division
    • G08C15/12Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path successively, i.e. using time division the signals being represented by pulse characteristics in transmission link

Abstract

PURPOSE:To simplify the constitution of a transmission system in which analog values at plural information generation points need be collected to one place concurrently in terms of time, by omitting a sampling command station and a sampling command transmission line. CONSTITUTION:An RTu1 which is farthest from an MTu4 sends out a frame 8 for data transmission in every sampling synchronism of the system. Respective RTu1-RTu3 regared the reception timing of a synchronizing word SYN9 as sampling timing to perform A/D conversion and transmit the data to the MTu4 together with alloted slots. To time synchronizing words to sampling, dummy slots 13-14 corresponding to the data establishment time at the RTus are provided between the allotted slots and synchronizing words to the RTus1-3. Consequently, the RTus perform sampling at different timing because the synchronizing words are timed to the sampling. Thus, a device and a transmission dedicated to sampling commands are omitted, so the constitution of the system is simplified.

Description

【発明の詳細な説明】 この発明は複数の情報発生点におけるアナログ所を時間
的同時性を持った上で1カ所に集める必魯性のある伝送
方式に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transmission system in which analog stations at a plurality of information generation points are required to be brought together in one place with temporal simultaneity.

従来この種の装置としてオ1図に示すものがあった。Conventionally, there was a device of this type as shown in Figure O1.

図において+11はオlのリモートターミナルユニット
(以下RT u Iと記す) 、 +21け第3のリモ
ートターミナルユニット(以下RTunと記す)、13
1#:tオN番目のターミナルユニット(以下RTul
iと記す)で、これらはそれぞれデータの発生点である
In the figure, +11 is the first remote terminal unit (hereinafter referred to as RT u I), +21 is the third remote terminal unit (hereinafter referred to as RTun), 13
1#: t-Nth terminal unit (hereinafter referred to as RTul)
(denoted as i), each of which is a data generation point.

(4)はマスターターミナルユニット(以下M T u
と記す) 、 filけサンプリング指令発生局である
(4) is the master terminal unit (hereinafter referred to as M Tu
) is the sampling command generating station.

また+6)はデータ伝送路、(7)はサンプリング指令
の伝送路、(8)はデータ伝送用の1フレームを示し、
 IllFiRTuI+11用の固定タイムスロット。
+6) indicates a data transmission line, (7) indicates a sampling command transmission line, and (8) indicates one frame for data transmission.
Fixed time slot for IllFiRTuI+11.

(11)けRTullfり用の固定タイムスロット、 
Q2)けRTuN(81用の固定タイムスロットである
(11) fixed time slot for Ke RTulf;
Q2) is a fixed time slot for RTuN (81).

次に動作について説明する。オ1図において。Next, the operation will be explained. In Figure 1.

RTu I Ill RT u 1112+ 、 RT
u N 131がアナログ蝋発生点に在るリモートター
ミナルユニット(データ送受言用子局)であり、これら
RTuに対して、サンプリング指令発生局15)から同
期面にカッー斉に各RTuに対してデータサンプリング
指令がサンプリング指令の伝送路())を経由して与え
られる。
RTu Ill RT u 1112+ , RT
uN 131 is a remote terminal unit (slave station for data transmission/reception) located at the analog wax generation point, and data is sent to each RTu simultaneously from the sampling command generation station 15) on the synchronous plane. A sampling command is given via a sampling command transmission path ( ).

−6RTu(1)121131では、そのサンプリング
タイミングで送信すべきアナログ量をサンプルホールド
しI ’/’D g侯した上で、データ伝送用フレーム
の各RTuに割シ当てられたタイムスロット(8)にデ
ータを乗せて、MTu(4)まで伝送する。
-6RTu(1) 121131 samples and holds the analog amount to be transmitted at that sampling timing, and then assigns a time slot (8) to each RTu of the data transmission frame. The data is transferred to MTu(4).

MTuではサンプリング指令が出されて゛から制定寺間
後にデータ伝送用フレームを一頌させ各RTuのデータ
を収集する。
In the MTu, after a sampling command is issued, a frame for data transmission is sent after a period of time, and data of each RTu is collected.

従来のこの種のデータ伝送装置は以上のように4成され
ているので各RTuが同期をとるためのサンプリング指
°令発生局およびそのための伝送路等が必要であり、コ
スト高であると同時に、サンプリング指令を各RTuへ
一斉に送るためRTuの分布にサンプリング指令局から
の距離的制約があるという欠点があった。
Since the conventional data transmission device of this type has four components as described above, it requires a sampling command generation station and a transmission line for that purpose in order to synchronize each RTu, which is costly and at the same time Since sampling commands are sent to each RTu all at once, there is a drawback in that the distribution of RTus is restricted by distance from the sampling command station.

この発明は上記のような従来のものの欠点を除去するた
めになされたもので、サンプリング指令局およびサンプ
リング指令用伝送路を削除することにより、安価で、シ
ンプルな構;況となるデータ伝送方式を提供するCとを
目的とじている。
This invention was made in order to eliminate the drawbacks of the conventional method as described above, and by eliminating the sampling command station and the sampling command transmission line, a data transmission system that is inexpensive and has a simple structure is created. The purpose is to provide C.

以下、この発明の一実施例を図について説明する。An embodiment of the present invention will be described below with reference to the drawings.

第1図において、(1)はRTu I 、 IllはR
Tu El 。
In Figure 1, (1) is RTu I, Ill is R
Tu El.

(′a)けRTu M、 +41はMTu、1e)Fi
データ用伝送路。
('a) Ke RTu M, +41 is MTu, 1e) Fi
Data transmission line.

01〜Oηはサンプリング遅延時間補正回路、(8)は
データ伝送用フレーム、(9)は同期ワード、ulはダ
ミースロットエ、 (14はダミースロットN、叫はス
ロットI ’s (u)はスロットn、+i21はスロ
ットNである。
01 to Oη are sampling delay time correction circuits, (8) is a data transmission frame, (9) is a synchronization word, ul is a dummy slot, (14 is a dummy slot N, and (u) is a slot. n, +i21 is slot N.

MTul+1よυ最遠端にあるRTu I Illはシ
ステムのサンプリング同期ごとにデータ伝送用フレーム
(8)を送出する。各RTulll f21131では
、同期ワード8 Y N (91を受信したタイミング
をサンプリングタイミングとしてA/I)変換を行い9
割当スロットにデータを乗せ込んでMTu+41まで伝
送する。ここで同期ワードをサンプリングタイミングと
するため、各RT u Ill T!1ts1への割当
スロットと同期ワードの間にはRTuKおけるテータ迩
立時間分のダミースロットu’J −94が設けられて
いる。また同期ワードをサンプリングタイミンク゛とす
るため、各RTuが実際にサンプリングを行うタイミン
グは異なっている。ただしこれは伝送速度と+yU期ワ
ードのピット数のみで決まる一定時間であるためMTu
の出力をアナロク゛値として使用する限りはMTuで受
信後、サンプリング壇延時間補正回路u娘、 偵、 I
Jηを用意することによって補正が可能となぁ。
RTu I Ill located at the farthest end of MTul+1 sends out a data transmission frame (8) every time the system is synchronized with sampling. Each RTull f21131 performs synchronization word 8 Y N (A/I conversion using the timing at which 91 is received as the sampling timing) and 9
The data is loaded into the assigned slot and transmitted up to MTu+41. Here, in order to use the synchronization word as the sampling timing, each RT u Ill T! A dummy slot u'J-94 corresponding to the data start time in RTuK is provided between the slot assigned to 1ts1 and the synchronization word. Furthermore, since the synchronization word is used as the sampling timing, the timing at which each RTu actually performs sampling is different. However, since this is a fixed time determined only by the transmission speed and the number of pits in the +yU period word, MTu
As long as the output is used as an analog value, after receiving it at MTu, the sampling delay time correction circuit
Correction is possible by preparing Jη.

なお上記実施例では伝送路(6)はノく−テイライン形
状であるが、ループ状にしても良く、この礪合にはフレ
ーム発生2局はMTuでも良い。
In the above embodiment, the transmission line (6) has a cross-tail line shape, but it may also be loop-shaped, and in this case, the two frame generating stations may be MTu.

以上のように、この発明によれば、サンプリング指令専
用の装置および伝送路を省略できるためシステムカニ安
価にi成でき、かつ、中継伝送となるためRTuの分布
にかなりの自由度23;あるというメリットがある。
As described above, according to the present invention, the system can be constructed at low cost because the device and transmission line dedicated to sampling commands can be omitted, and since relay transmission is used, there is a considerable degree of freedom in the distribution of RTu. There are benefits.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図IJLI及び(1)lは従来のRTuのサンプリ
ング時間を同期させた伝送装置のブロック41!収図お
よび11号フレーム″4成因、オ8図(IL+および+
1)1はこの発明の同期ワードをサンプリング指令に用
い九゛伝送方式の一実施例を示すブロック構成図および
信号フレーム構成図である。 図において、 111−−− RTu I 、 +21
−−− RTuII 、+31−−−RTuN 、+4
1−−−MTu、16)−−−サンプリング指令発生局
、 +61−−−データ用伝送路、 ’!?) −−−
サンプリング指令用伝送路、(8)−・−信号フレーム
、 (91−−一同期ワード、 tllm−−−RTu
 I用固定タイムスロット、 (u) −−−RTun
用固定タイムスロット、 <12−−− RTuN用固
定タイムスロット、 aS −−−ダミースロットエ、
 1141−−−ダミースロット五−均制御−RTu 
I用すンプリング遅延時間禰正回路、 a=−−−RT
ull用サンプリすグ遅延時間輛正回路。 (Iη−−−RTu N用すンプリング遅延時間補正回
路。 なお図中、同一符号は同−又は相当部分を示す。 代理人  葛 野  信 −
FIG. 1 IJLI and (1) l is a block 41 of a transmission device that synchronizes the sampling time of the conventional RTu! Included diagrams and No. 11 frame "4 causes, O8 diagrams (IL+ and +
1) 1 is a block configuration diagram and a signal frame configuration diagram showing an embodiment of a nine-way transmission system using a synchronization word as a sampling command according to the present invention. In the figure, 111--- RTu I, +21
--- RTuII, +31 --- RTuN, +4
1---MTu, 16)---Sampling command generation station, +61---Data transmission line, '! ? ) ---
Transmission line for sampling command, (8)---Signal frame, (91--One synchronization word, tllm---RTu
Fixed time slot for I, (u) ---RTun
Fixed time slot for <12--- Fixed time slot for RTuN, aS --- Dummy slot,
1141---Dummy slot five-equity control-RTu
I sampling delay time correction circuit, a=----RT
Ull sampling delay time correction circuit. (Iη - Sampling delay time correction circuit for RTu N. In the figure, the same reference numerals indicate the same or corresponding parts. Agent Shin Kuzuno -

Claims (1)

【特許請求の範囲】 (11時分割多重固定タイムスロット伝送方式において
、同期信号を同期信号受信端のデータサンプリングタイ
ミングとしたことを特徴とする伝送方式。 (2)  同期信号と同期信号受信局のデータ乗り込み
スロットとの間に同期信号受信局におけるデータ彌立時
間分のダミースロットを挿入したことを特徴とする特許
請求の範囲オ1項記戒の伝送方式。
[Claims] (11) A transmission system characterized in that the synchronization signal is used as the data sampling timing at the synchronization signal receiving end in the time division multiplex fixed time slot transmission system. (2) The synchronization signal and the synchronization signal receiving station. 1. The transmission system according to claim 1, characterized in that a dummy slot corresponding to the data stall time at the synchronization signal receiving station is inserted between the data entry slot.
JP57023902A 1982-02-15 1982-02-15 Transmission system Granted JPS58141047A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57023902A JPS58141047A (en) 1982-02-15 1982-02-15 Transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57023902A JPS58141047A (en) 1982-02-15 1982-02-15 Transmission system

Publications (2)

Publication Number Publication Date
JPS58141047A true JPS58141047A (en) 1983-08-22
JPH0216071B2 JPH0216071B2 (en) 1990-04-16

Family

ID=12123392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57023902A Granted JPS58141047A (en) 1982-02-15 1982-02-15 Transmission system

Country Status (1)

Country Link
JP (1) JPS58141047A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317003A (en) * 1976-07-30 1978-02-16 Mitsubishi Electric Corp Time division multiplex communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5317003A (en) * 1976-07-30 1978-02-16 Mitsubishi Electric Corp Time division multiplex communication system

Also Published As

Publication number Publication date
JPH0216071B2 (en) 1990-04-16

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