JPS61208336A - Data transmission method - Google Patents

Data transmission method

Info

Publication number
JPS61208336A
JPS61208336A JP60048844A JP4884485A JPS61208336A JP S61208336 A JPS61208336 A JP S61208336A JP 60048844 A JP60048844 A JP 60048844A JP 4884485 A JP4884485 A JP 4884485A JP S61208336 A JPS61208336 A JP S61208336A
Authority
JP
Japan
Prior art keywords
data
transmission
order
time
device number
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
JP60048844A
Other languages
Japanese (ja)
Other versions
JP2552646B2 (en
Inventor
Harumasa Ooya
大屋 晴聖
Rumiko Akimoto
秋元 留美子
Katsutoshi Tagami
勝利 田上
Ryoichi Tsuchiya
土屋 良一
Kazuo Nakamura
一男 中村
Isato Muneyuki
宗行 勇人
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.)
Honda Motor Co Ltd
Oki Electric Industry Co Ltd
Original Assignee
Honda Motor Co Ltd
Oki Electric Industry Co Ltd
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 Honda Motor Co Ltd, Oki Electric Industry Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP60048844A priority Critical patent/JP2552646B2/en
Priority to EP86103347A priority patent/EP0194674B1/en
Priority to DE8686103347T priority patent/DE3685761T2/en
Priority to CA000503974A priority patent/CA1261021A/en
Priority to US06/839,781 priority patent/US4771423A/en
Publication of JPS61208336A publication Critical patent/JPS61208336A/en
Application granted granted Critical
Publication of JP2552646B2 publication Critical patent/JP2552646B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To improve the transmission efficiency and to prevent stop of data transmission due to generation of an error by setting the operating order of a transmission line in advance by each data transmitter/receiver and setting various kinds of supervisory timers supervising device numbers and transmission data sent from each data transmitter/receiver. CONSTITUTION:When transmission data D is not sent within a preset time, data end supervisory timer t2 of a device Nn started after the transmission of the device number A goes to time-out. In the device Nn+1 in the next order, it is discriminated that the own device is in the order transmitting data based on the device number A from the device Nn and after a supervisory time 1/2 t1 is elapsed, the own device number A and the data D are sent. A device number reception supervisory timer t3 is started when the time-out of the data end supervisory timer t2 is caused. Then the supervisory timer t3 is stopped when the device Nn+1 sends the device number A and it is received by the next order device Nn+2 receives it and a normal data transmission is given from the device Nn+1.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、伝送路によりループ状に連結□された複数の
データ送受信装置のデータ伝送を制御するデータ伝送方
法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a data transmission method for controlling data transmission of a plurality of data transmitting/receiving devices connected in a loop through a transmission path.

(従来の技術) 従来、この種の伝送方法としては、例えば゛を自動車技
術Vo1.38. No、2J  (1984年発行、
第215頁〜第221頁)に記載され、多重ハーネスシ
ステムに適用されたものがある。
(Prior Art) Conventionally, as this type of transmission method, for example, "Automotive Technology Vol. 1.38. No. 2J (published in 1984,
215 to 221) and applied to a multiple harness system.

この方法は、第3図に示すように、複数めデータ送喪信
装鐙(以下、単に装置という)’(N+’〜Nn)が伝
送路(1)によりループ状に連結されたループネットワ
ークを用い、これらの装置(L”〜N’n’)のうち、
伝送路(1)の管理権を持つマス”り装置(N+)が各
装置(N2〜N!l) へポーリング要求(P)を送信
し、これを管理権を持たない各スレーブ:側の装置(N
2〜Nn)が受信することにより、スレーブ側の装置(
N2〜Nn)が、順次、自己を表示する装置番号(A)
と伝送データ(D)を伝送路(1)上に送出していた0
例えば、各装置(Ml −N3)の装置番号(A)およ
び伝送データ(D)を第4図に示すように、装置番号(
A)および伝送データ(D)がそれぞれ送出されると、
所定の監視時間(tl)を経過した後に、マスク装置(
N+)からポーリング要求(P)を送出し、このポーリ
ング要求(P)をスレーブ側の各装置(N2〜Nn)が
それぞれ受信し、さらに監視時間(5−3)の経過後に
、次のスレーブ側の装置、例えば、 No、 2の装置
(N2)が装置番号(A)および伝送データ(D)を伝
送路(1)上に送出するものである。
As shown in Figure 3, this method uses a loop network in which a plurality of data transmission and loss transmission stirrups (hereinafter simply referred to as devices) '(N+' to Nn) are connected in a loop through a transmission path (1). , among these devices (L''~N'n'),
The mass communication device (N+) that has the management right of the transmission path (1) sends a polling request (P) to each device (N2 to N!l), which is sent to each slave device that does not have the management right. (N
2 to Nn) receives the data, the slave side device (
N2 to Nn) are the device numbers (A) that sequentially display themselves.
0, which was sending the transmission data (D) onto the transmission path (1).
For example, as shown in FIG. 4, the device number (A) and transmission data (D) of each device (Ml-N3) are
When A) and transmission data (D) are respectively sent,
After the predetermined monitoring time (tl) has elapsed, the mask device (
A polling request (P) is sent from N+), each slave side device (N2 to Nn) receives this polling request (P), and after the monitoring time (5-3) has elapsed, the next slave side For example, the device No. 2 (N2) sends the device number (A) and transmission data (D) onto the transmission path (1).

(発明が解決しようとうする問題点) ところが、上記従来のデータ伝送方法においては、マス
ク装置からのポーリング要求の送信、スレーブ側の装置
でのポーリング要求の受信に基づいて伝送順序が決定さ
れるため、伝送効率が低く、また、装置の故障や外部か
らのノイズによる異常が発生した場合には、マスク装置
の機能が停止し、ポーリング要求を送信できなくなるた
め、その後のデータ伝送が停止状態となる虞があった。
(Problem to be Solved by the Invention) However, in the conventional data transmission method described above, the transmission order is determined based on the transmission of a polling request from the mask device and the reception of the polling request by the slave device. , If the transmission efficiency is low, or if an abnormality occurs due to a device failure or external noise, the mask device will stop functioning and will no longer be able to send polling requests, resulting in subsequent data transmission being stopped. There was a risk.

(発明の目的) 本発明は、上記問題点を解決し、マスク装置からスレー
ブ側の各装置へのポーリング要求に基づ〈方法を用いず
に伝送効率を高めるとともに、異常発生によるデータ伝
送の停止を防止できるデータ伝送方法を提供することを
目的とする。
(Objective of the Invention) The present invention solves the above problems, improves transmission efficiency without using a method based on polling requests from a mask device to each device on the slave side, and halts data transmission due to the occurrence of an abnormality. The purpose is to provide a data transmission method that can prevent

(問題点を解決するための手段) 本発明のデータ伝送方法は、各装置の伝送路の使用順位
を予め設定するとともに、正常および異常時の終了監視
タイマや装置番号受信監視タイマ等、種々の監視タイマ
を設定しておき、先順位のデータ送受信装置のデータ伝
送終了後所定の監視時間経過後に次順位のデータ送受信
装置からデータを送信させ、先順位のデータ送受信装置
が異常状態の場合には、前記監視タイマに基づいて先順
位の異常を判断し次順位のデータ送受信装置からデータ
を伝送させるものである。
(Means for Solving the Problems) The data transmission method of the present invention presets the usage order of the transmission path of each device, and also uses various functions such as a termination monitoring timer and a device number reception monitoring timer in normal and abnormal situations. A monitoring timer is set and data is transmitted from the next data transmitting/receiving device after a predetermined monitoring time has elapsed after data transmission by the data transmitting/receiving device of the first priority is completed.If the data transmitting/receiving device of the first priority is in an abnormal state, , based on the monitoring timer, it is determined whether there is an abnormality in the preceding order, and the data is transmitted from the data transmitting/receiving device in the next order.

(作用) 先順位のデータ送受信装置からデータの伝送が正常に行
われると、このデータ送受信装置の装置番号に基づいて
予め使用順位が設定された次順位のデータ送受信装置が
監視タイマで設定された設定時間経過後にデータを送出
する。先順位のデータ送受信装置に異常が発生した場合
、例えばデータ終了監視タイマや装置番号受信監視タイ
マ等、各種の監視タイマが起動し、これらの監視タイマ
のタイムアウトにより次順位のデータ送受信装置が送出
タイミングを得て自分の順番であると判断し、次順位の
データ送受信装置からデータが送出される。このように
して、データ送受信装置の異常状態時においても、デー
タ伝送の停止が防止される。
(Function) When data transmission is normally performed from the data transmitting/receiving device of the previous rank, the data transmitting/receiving device of the next rank, whose use order is set in advance based on the device number of this data transmitting/receiving device, is set by the monitoring timer. Sends data after the set time has elapsed. When an abnormality occurs in the data transmitting/receiving device in the higher order, various monitoring timers such as the data end monitoring timer and the device number reception monitoring timer start, and when these monitoring timers time out, the data transmitting/receiving device in the next priority changes the transmission timing. The device determines that it is its turn and transmits the data from the data transmitting/receiving device of the next rank. In this way, data transmission is prevented from stopping even when the data transmitting/receiving device is in an abnormal state.

(実施例) 以下に本発明の一実施例を図面に基づいて詳細に説明す
る。
(Example) An example of the present invention will be described below in detail based on the drawings.

第1図は従来の第4図に対応する正常時におけるデータ
伝送方法を示すタイミングチャートであり、第2図は異
常時におけるデータ伝送方法を示すタイミングチャート
である。
FIG. 1 is a timing chart showing a data transmission method in a normal state corresponding to the conventional method shown in FIG. 4, and FIG. 2 is a timing chart showing a data transmission method in an abnormal state.

本実施例のデータ伝送方法では、各データ送受信装置(
N+〜Nn)の伝送路(1)の使用順位が予めめ設定さ
れており、各データ送受信装置(以下、単に装置という
) (Nl−Nn)内には、各監視タイマを備え、この
監視タイマに基づいて順次データが伝送される。また、
各装置1(N+〜Nn)から送出されるデータとしては
自己の装置を示す装置番号(A)と伝送データ(D)と
から構成されている。
In the data transmission method of this embodiment, each data transmitting/receiving device (
The usage order of the transmission path (1) of N+ to Nn) is set in advance, and each data transmitting/receiving device (hereinafter simply referred to as device) (Nl-Nn) is equipped with a respective monitoring timer. Data is transmitted sequentially based on. Also,
The data sent from each device 1 (N+ to Nn) consists of a device number (A) indicating its own device and transmission data (D).

まず、正常時について説明する。なお、伝送路(1)の
使用順位は装置NI +  ’2 +  N3・・・N
nの順に予め設定されているものとする。特定の装置、
例えばマスク装置(Noが起動すると、この装置(N+
)からは、この装置(N1)を示す装置番号(A)と伝
送データ(+))がループ状の伝送路(1)に送出され
、この装置番号(A)と伝送データ(D)が各装置(N
2〜Nn)に受信される、これらが正常に受信されると
、各装置(N2〜Nn)においては、受信した装置番号
(A)に基づいて次にデータを送出する次の順位である
装置(N2)が決定される0次の装置(N2)では、こ
れに備えた監視タイマにより監視時間(tl)後に装置
番号(A)と伝送データ(D)を送出する。さらに、次
の順位の装置(N3)は装置(N2)からの装置番号(
A)に基づいて順位が決定される。
First, normal times will be explained. Note that the order of use of the transmission path (1) is device NI + '2 + N3...N
It is assumed that they are set in advance in the order of n. specific equipment,
For example, when the mask device (No) is activated, this device (N+
), the device number (A) and transmission data (+)) indicating this device (N1) are sent to the loop-shaped transmission path (1), and this device number (A) and transmission data (D) are transmitted to each Equipment (N
2 to Nn). When these are received normally, each device (N2 to Nn) selects the next device to send data based on the received device number (A). The zero-order device (N2) for which (N2) is determined sends out the device number (A) and transmission data (D) after a monitoring time (tl) by a monitoring timer provided therein. Furthermore, the next ranked device (N3) is the device number (N2) from the device (N2).
The ranking is determined based on A).

このように、装置番号(A)に基づき予め設定された使
用順位に従って順次、次の装置(N3+N4+N5・・
・Nn)のデータ伝送が行われる。したがって、マスク
装置(N1)から各装置t(Nt〜Nn)へのポーリン
グ要求を必要としないため、従来の如きポーリング時間
およびこの監視時間(S−3)が不要となり、伝送路(
1)上の伝送密度を高めることができる。
In this way, the next device (N3+N4+N5...
・Nn) data transmission is performed. Therefore, since there is no need for a polling request from the mask device (N1) to each device t (Nt to Nn), the conventional polling time and monitoring time (S-3) are no longer necessary, and the transmission path (
1) The above transmission density can be increased.

次に異常時の場合について説明する。Next, the case of abnormality will be explained.

例えば、装置(Nn)に何らかの原因で異常が発生し、
この装置(Nn)から装置番号(A)だけが正常に送出
される一方、伝送データCD)が正常に送出されていな
い場合1例えば、予め設定された時間内に伝送データ(
D)が送出されない場合には、装置番号(A)の送出後
に起動する装置(Nn)のデータ終了監視タイマ(tl
)がタイムアウトとなる。これにより1次の順位である
装置(Nn++)においては、装置(Nr+)からの装
置番号(A)に基づいて自己がデータを送出する順番で
あることを判断し、監視時間(1/2tθが経過した後
に自己の装置番号(A)および伝送データCD)を送出
する。これとともに、データ終了監視タイマ(tl)の
タイムアウトとなった時点から異常時の装置番号受信監
視タイマ(ts)が起動する。そして、この監視タイマ
(ts)は、装置(Nn++)が装置番号(A)を送出
しこれを次の順位の装置(Nn +2)が受信した場合
には停止し、装置(Nn++)からは正常なデータ伝送
が行われる。
For example, if an abnormality occurs in the device (Nn) for some reason,
If only the device number (A) is sent normally from this device (Nn), but the transmission data CD) is not sent normally 1. For example, if the transmission data (CD) is not sent normally within a preset time.
D) is not sent, the data end monitoring timer (tl) of the device (Nn) that starts after sending the device number (A)
) will time out. As a result, the device (Nn++) in the first order determines that it is its turn to send data based on the device number (A) from the device (Nr+), and the monitoring time (1/2tθ After the elapsed time, it sends out its own device number (A) and transmission data CD). At the same time, the abnormal device number reception monitoring timer (ts) starts from the time the data end monitoring timer (tl) times out. This monitoring timer (ts) stops when the device (Nn++) sends out the device number (A) and the next device (Nn+2) receives it, and the device (Nn++) sends out the device number (A) and then stops. data transmission is performed.

これに対し、設定時間内に装置(Nn++)の装置番号
(A)を送信しなかった場合には異常時の装置番号受信
監視タイマ(ts)がタイムアウトとなり、装置(Nn
++)の異常時のデータ終了監視タイマ(ts)が設定
された時間起動する。この監視タイマ(b)の起動によ
り1次の順位の装置(Nn+2)は送出順位テーブルデ
ータに基づいて自己がその順位であることを判断し、監
視タイマ(ts)がタイムアウトになった後監視時間(
tl)後に装置番号(A)および伝送データ(D)を送
出する。
On the other hand, if the device number (A) of the device (Nn++) is not sent within the set time, the device number reception monitoring timer (ts) in the event of an abnormality times out, and the device (Nn++)
The data end monitoring timer (ts) in the event of an abnormality in ++) is activated for the set time. By starting this monitoring timer (b), the device (Nn+2) in the first order determines that it is in that order based on the sending order table data, and after the monitoring timer (ts) times out, the monitoring time is (
tl), then sends the device number (A) and transmission data (D).

また、装置(Nn)から伝送データ(El)が正常に装
置(Nn + +)に受信された場合には、装置(Nn
+t)の装置番号受信監視タイマ(t4)が設定時間起
動するが、この設定時間内に装置(Nn+1)から構成
される装置番号(A)が次の装置(Nn+z)に受信さ
れなかった場合には、この監視タイマ(t◆)がタイム
アウトとなって異常時のデータ終了監視タイマ(ts)
が起動し、次の順位の装置(Nn+z)が4出タイミン
グを得る。このようにして、伝送データ(D)や装置番
号(A)が正常に送信又は受信されない異常時の場合で
も、予め設定された伝送路の使用順位に従って、順次次
の装置のデータが伝送されることとなり、異常時発生に
伴なうデータ伝送の停止を防止できる。
In addition, when the transmission data (El) from the device (Nn) is normally received by the device (Nn + +), the device (Nn
+t) device number reception monitoring timer (t4) starts for a set time, but if the device number (A) consisting of device (Nn+1) is not received by the next device (Nn+z) within this set time, is the data end monitoring timer (ts) when this monitoring timer (t◆) times out and there is an error.
starts, and the next ranked device (Nn+z) obtains the 4-output timing. In this way, even in the event of an abnormality in which the transmission data (D) or device number (A) is not transmitted or received normally, the data of the next device is transmitted in sequence according to the preset order of use of the transmission path. This makes it possible to prevent data transmission from being stopped due to the occurrence of an abnormality.

(発明の効果) 以上説明したように本発明によれば、各データ送受信装
置で予め伝送路の使用順位を設定するとともに各データ
送受信装置から構成される装置番号および伝送データを
監視する各種の監視タイマを設定しておくことにより、
マスク装置からのポーリング要求が不要となり、伝送路
の伝送密度が高まり、伝送効率を向上することが可能と
なり、また、データを送出すべき装置に異常が発生した
場合でも、データ伝送の停止を防止すること5ができる
。さらに、伝送効率がよいことおよびデータ伝送の停止
が防止できることにより、ループ状の伝送路を有する種
々の情報通信システムに適用できる利点がある。
(Effects of the Invention) As explained above, according to the present invention, the use order of the transmission path is set in advance in each data transmitting/receiving device, and various types of monitoring are performed to monitor the device number and transmitted data constituted by each data transmitting/receiving device. By setting a timer,
Polling requests from the mask device are no longer required, increasing the transmission density of the transmission path and improving transmission efficiency.Also, even if an abnormality occurs in the device that is supposed to send data, data transmission is prevented from stopping. I can do 5 things. Furthermore, since transmission efficiency is high and data transmission can be prevented from stopping, it has the advantage of being applicable to various information communication systems having loop-shaped transmission paths.

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

第1図および第2図は本発明の一実施例に係り、各々正
常時および異常時におけるデータ伝送方法を説明するた
めのタイムチャート、第3図および第4図;は従来例に
係り、第3図はループ状の伝送路を示す概略図、第4図
は、データ伝送方法を説明するためのタイムチャートで
ある。 (1)・・・・・・・・・・・・・・・伝送路(データ
1 and 2 relate to an embodiment of the present invention, and FIGS. 3 and 4 relate to a time chart for explaining a data transmission method in normal and abnormal times, respectively, and relate to a conventional example; FIG. 3 is a schematic diagram showing a loop-shaped transmission path, and FIG. 4 is a time chart for explaining the data transmission method. (1)・・・・・・・・・・・・Transmission path (data)

Claims (1)

【特許請求の範囲】[Claims] 複数のデータ送受信装置をループ状に連結した伝送路を
通じて前記各データ送受信装置間でデータの授受を行う
データ伝送方法において、前記複数のデータ送受信装置
の間で伝送路の使用順位を予め設定しておき、先順位の
データ送受信装置のデータ伝送終了時から所定の監視時
間経過後に次順位のデータ送受信装置からデータを送信
させる一方、先順位のデータ送受信装置に異常が発生し
た場合には、予め設定された種々の監視タイマに基づい
て先順位の異常を判断して次順位のデータ送受信装置に
データを送信させることを特徴とするデータ伝送方法。
In a data transmission method in which data is exchanged between the data transmitting and receiving devices through a transmission path in which a plurality of data transmitting and receiving devices are connected in a loop, a use order of the transmission path is set in advance among the plurality of data transmitting and receiving devices. Then, after a predetermined monitoring period has elapsed from the end of data transmission by the data transmitter/receiver in the higher order, data is transmitted from the data transmitter/receiver in the next rank.If an abnormality occurs in the data transmitter/receiver in the higher rank, the data is set in advance. 1. A data transmission method characterized in that an abnormality in a preceding order is determined based on various monitoring timers, and a data transmitting/receiving device in a next order is caused to transmit data.
JP60048844A 1985-03-12 1985-03-12 Data transmission method Expired - Fee Related JP2552646B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP60048844A JP2552646B2 (en) 1985-03-12 1985-03-12 Data transmission method
EP86103347A EP0194674B1 (en) 1985-03-12 1986-03-12 Multiplex transmission system
DE8686103347T DE3685761T2 (en) 1985-03-12 1986-03-12 MULTIPLEXUE TRANSMISSION SYSTEM.
CA000503974A CA1261021A (en) 1985-03-12 1986-03-12 Multiplex transmission system
US06/839,781 US4771423A (en) 1985-03-12 1986-03-13 Multiplex transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60048844A JP2552646B2 (en) 1985-03-12 1985-03-12 Data transmission method

Publications (2)

Publication Number Publication Date
JPS61208336A true JPS61208336A (en) 1986-09-16
JP2552646B2 JP2552646B2 (en) 1996-11-13

Family

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JP60048844A Expired - Fee Related JP2552646B2 (en) 1985-03-12 1985-03-12 Data transmission method

Country Status (1)

Country Link
JP (1) JP2552646B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4949083A (en) * 1987-05-21 1990-08-14 Nippondenso Co., Ltd. Communication system
JP2007325346A (en) * 2006-05-30 2007-12-13 Saraya Kk Device for monitoring battery residual quantity

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208746A (en) * 1981-06-18 1982-12-21 Toyota Motor Corp Transmission controlling system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208746A (en) * 1981-06-18 1982-12-21 Toyota Motor Corp Transmission controlling system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4949083A (en) * 1987-05-21 1990-08-14 Nippondenso Co., Ltd. Communication system
JP2007325346A (en) * 2006-05-30 2007-12-13 Saraya Kk Device for monitoring battery residual quantity

Also Published As

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