JPS5870657A - Multiple signal transmission system for car - Google Patents
Multiple signal transmission system for carInfo
- Publication number
- JPS5870657A JPS5870657A JP16907481A JP16907481A JPS5870657A JP S5870657 A JPS5870657 A JP S5870657A JP 16907481 A JP16907481 A JP 16907481A JP 16907481 A JP16907481 A JP 16907481A JP S5870657 A JPS5870657 A JP S5870657A
- Authority
- JP
- Japan
- Prior art keywords
- station
- slave
- master station
- data
- control code
- 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
- 230000008054 signal transmission Effects 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/0315—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for using multiplexing techniques
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Selective Calling Equipment (AREA)
- Safety Devices In Control Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は親局と子局との間でデータ通信を行ない、少な
くとも親局の要求に対して、子局が親局に向けてデータ
を送信する自動車用多重信号伝送方式に関し、その目的
とするところは車両内部に親局、子局を配置し親局と子
局を双方向のループで接続し、親局から定期的に送信さ
れるコントロールコードに従って該コントロールコード
に続けて、子局から親局ヘデータを送信するようにし子
局は双方向ループの少なくともどちらか一方の入力から
コントロールコードを検出した場合に、両（１）
方向に同一のデータを出力することにより親局と子局又
は子局と子局の間において多重信号伝送ラインが断線゛
しても正常゛な信号伝送を可能ならしめることである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an automotive multiplex signal transmission system in which data communication is performed between a master station and a slave station, and the slave station transmits data toward the master station at least in response to a request from the master station. Regarding the method, the purpose is to place a master station and a slave station inside the vehicle, connect the master station and slave stations in a bidirectional loop, and control the control code according to the control code periodically transmitted from the master station. Next, data is transmitted from the slave station to the master station, and when the slave station detects a control code from at least one input of the bidirectional loop, it outputs the same data in both (1) directions. To enable normal signal transmission even if a multiplex signal transmission line is disconnected between a master station and a slave station or between a slave station and a slave station.
本発明を図示の実施例について説明すると、第１図は車
両内部に於ける多重信号伝送制御回路の親局と子局の配
置の一実施例である。１は親局であり第３図の４１に示
す様なコントロールコードを一定周期にて送信している
。２，３は子局−であり親局からのコントロールコード
に従って、第３図の４３に示す様にコントロールコード
が自分のデータを親局へ送信すべき要求である場合には
、コントロールコードに続けて自分の局で読み込んだス
イッチ等の情報を親局へ送信する機能を有する。To explain the present invention with reference to the illustrated embodiment, FIG. 1 shows an embodiment of the arrangement of a master station and a slave station of a multiplex signal transmission control circuit inside a vehicle. Reference numeral 1 denotes a master station, which transmits a control code as shown at 41 in FIG. 3 at regular intervals. 2 and 3 are slave stations, which follow the control code from the master station, and if the control code is a request to send their own data to the master station, as shown in 43 in Figure 3, they will follow the control code. It has a function to send information such as switches read by the own station to the master station.
４〜９はそれぞれの局を接続する多重信号伝送ラインで
あり親局１と子局２．３を双方向のループ状に電線又は
光ファイバによって接続している。Numerals 4 to 9 are multiplex signal transmission lines connecting the respective stations, and the master station 1 and slave stations 2 and 3 are connected in a bidirectional loop by electric wires or optical fibers.
第２図は子局の構成を示す一実施例であり、１０．１１
は多重信号送信用ライントライバ、１’２．１３（２）
は多重信号受信用ラインレシーバ、１４．１５はＯＲ論
理回路、１６．１７は非同期式送受信回路（例えばイン
テル社１１８２５１ Ａｃ１Ａ＞、１Ｂはワンチップ
マイクロコンピュータ（例えばインテル社製１８０４９
）、ｊ９は水晶振動子、２０は該マイクロコンピュータ
の出力から非同期式送受信回路へクロックを送るクロッ
クライン、２１は３ 送受信回路とマイクロコンピュー
タ間のデータバス、２２．２３は該送受信回路のセレク
ト及び内部レジスタをセレクトするコントロールライン
、２４はスイッチ２７等からの信号をマイクロコンピュ
ータに取り込む為の入カバソファ回路、２５はマイクロ
コンピュータの出力によってランプ２８、ワイパ等のモ
ータ（図示せず）等を駆動する為の出力バッファ回路で
ある。２６は該局に電源を供給するバッテリである。Figure 2 shows an example of the configuration of a slave station, and 10.11
is a line driver for multiplex signal transmission, 1'2.13 (2) is a line receiver for multiplex signal reception, 14.15 is an OR logic circuit, and 16.17 is an asynchronous transmitting/receiving circuit (for example, Intel 118251 Ac1A>, 1B is a one-chip microcomputer (for example, Intel 18049)
), j9 is a crystal oscillator, 20 is a clock line that sends a clock from the output of the microcomputer to the asynchronous transmitting/receiving circuit, 21 is a data bus between the transmitting/receiving circuit and the microcomputer, and 22 and 23 are the select and receiving circuits of the transmitting/receiving circuit. A control line 24 selects an internal register, 24 is an input bath circuit for inputting signals from a switch 27, etc. to the microcomputer, and 25 drives a lamp 28, a motor (not shown) for a wiper, etc. by the output of the microcomputer. This is an output buffer circuit for 26 is a battery that supplies power to the station.
次に上記装置の作用を説明すると、まず、第３図は伝送
ライン正常時における第２図の子局の多重信号の波形を
示す。４１はラインレシーバ１３の受信波形であり、親
局からのコントロールコー（３）
ドが“１０００００００−であることを示している。４
２はコントロールコード“１０００００００”に応答し
て１８のマイクロコンピュータの指令に従って送受信回
路１６が“１０１０１０００”を出力していることを示
す波形である。４３は信号４１と４２の負の論理和をと
る回路１４の出力波形である。同様に４４はラインレシ
ーバ１２の、４５は送受信回路１７の、４６は論理和回
路１５のそれぞれの出力波形である。Next, the operation of the above device will be explained. First, FIG. 3 shows the waveform of the multiplexed signal of the slave station in FIG. 2 when the transmission line is normal. 41 is the received waveform of the line receiver 13, indicating that the control code (3) from the master station is "10000000-.4
2 is a waveform indicating that the transmitting/receiving circuit 16 is outputting "10101000" in response to the control code "10000000" in accordance with the instructions from the microcomputer 18. 43 is the output waveform of the circuit 14 which takes the negative OR of the signals 41 and 42. Similarly, 44 is the output waveform of the line receiver 12, 45 is the output waveform of the transmitting/receiving circuit 17, and 46 is the output waveform of the OR circuit 15.
次に第４図（Ａ）、（Ｂ）、（Ｃ）はループの断線を×
で示してあり各々異常時を示す。第４図（Ａ）は親局１
と子局３の間の伝送ライン４と７が断線した図であり、
コントロールコードは伝送ライン９．８によって子局２
，３へ送られデータは伝送ライン５，６によって親局１
へ送られて来る。また第４１ｉｉ！Ｉ （Ｂ）のように
親局１と子局２の間の伝送ライン６と９が断線すると、
コントロールコードは伝送ライン４．５によって子局２
，３へ送られデータは伝送ライン８．７によって親局ｌ
へ送られて来る。また第４図（Ｃ）のように子（４）
局２と子局３の間の伝送ライン５と８が断線すると、コ
ントロールコードは伝送ライン４．９８二よって子局２
，３へ送られデータは伝送ライン６゜７によって親局１
へ送られて来る。Next, in Figure 4 (A), (B), and (C), the loop breakage is
, which indicates an abnormal situation. Figure 4 (A) shows the master station 1
It is a diagram in which transmission lines 4 and 7 between and slave station 3 are disconnected,
The control code is transmitted to slave station 2 via transmission line 9.8.
, 3 and the data is sent to the master station 1 via transmission lines 5 and 6.
will be sent to. See you in the 41st ii! If the transmission lines 6 and 9 between the master station 1 and slave station 2 are disconnected as shown in I (B),
The control code is transmitted to slave station 2 via transmission line 4.5.
, 3 and the data is sent to the master station l via transmission line 8.7.
will be sent to. Also, as shown in Fig. 4(C), if transmission lines 5 and 8 between slave station 2 and slave station 3 are disconnected, the control code will be transmitted to slave station 2 by transmission line 4.982.
, 3, and the data is sent to the master station 1 via transmission line 6゜7.
will be sent to.
すなわち各子局は第５図のフローチャート−にガ−Ｊ−
４ｊｔにどちらか一方の入力にコントロールコートを受
信した場合に同一のデータを両方の送信ラインに出力す
ることによってループの１ケ所力ＩＩしても何ら機能を
低下させることなく信号を親ルへ送ることが出来る機能
を有する為、走行中にＯらかの原因で１ケ所断線が発生
しても正常番こ作濁し続ける為運転上支障をきたすこと
カベなし１゜なお、上記実施例は親局１つ、子局２つの
３Ａの構成例示したが、子局は１局以上イ町局で構成。In other words, each slave station follows the flowchart in FIG.
By outputting the same data to both transmission lines when a control code is received on either input in 4jt, the signal is sent to the parent line without any loss of function even if one point in the loop is input. Since it has a function that allows the wire to be disconnected at one place due to some reason while driving, the normal operation will continue and the operation will not be hindered. Although we have shown an example of a 3A configuration with one slave station and two slave stations, the slave stations consist of at least one I-cho station.
ても同様の効果が得られる。The same effect can be obtained.
以上述べたように本発明方式番よデータ伝送を１実に実
現できる。As described above, data transmission can be easily realized using the method of the present invention.
添付図は本発明の一実施例を示すもので、第図は親局と
子局の配置を示す説明図、第２図番よ（５）
局の構成を示すブロック図、第３図は子局における作動
を説明するための各部信号のタイムチャート、第４図（
Ａ）、（！３）、（Ｃ）は信号ラインの断線モードを示
す説明図、第５図は子局におけるコンピュータ処理を示
すフローチャートである。
１・・・親局、２，３・・・子局、４〜９・・・伝送ラ
イン、１０．１１・・・ライントライバ、１２． １３
・・・ライ義 ンレシーバ、１４．１５・・・ＯＲ
論理回路、１６゜５ １７・・・送受（８回路、１８
・・・マイクロコンピュータ。
ク
ヵ 代理人弁理士 岡 部
隆り
し
雇
子
（６）
第 １ ＠
第 ４ ■The attached drawings show one embodiment of the present invention. Figure 2 is an explanatory diagram showing the arrangement of the master station and slave stations, Figure 2 is a block diagram showing the configuration of the station (5), and Figure 3 is a block diagram showing the configuration of the slave station. Time chart of each part signal to explain the operation at the station, Fig. 4 (
A), (!3), and (C) are explanatory diagrams showing signal line disconnection modes, and FIG. 5 is a flowchart showing computer processing in the slave station. 1... Master station, 2, 3... Slave station, 4-9... Transmission line, 10.11... Line driver, 12. 13
・・・Receiver, 14.15...OR
Logic circuit, 16°5 17... Transmission/reception (8 circuits, 18
...Microcomputer. Kuka Patent Attorney Okabe
Takashi Hireko (6) 1st @ 4th ■
Claims (1)
状に接続し、子局は少なくとも一方のループの入力から
該局の担当のコントロールコードを受信した場合双方向
に同じデータを送信することを特徴とした自動車用多重
信号伝送方式、。The master station and slave stations are connected in a double loop so that signals can be transmitted in both directions, and when the slave station receives the control code assigned to that station from the input of at least one loop, it transmits the same data in both directions. A multiplex signal transmission system for automobiles, characterized by transmitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16907481A JPS5870657A (en) | 1981-10-22 | 1981-10-22 | Multiple signal transmission system for car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16907481A JPS5870657A (en) | 1981-10-22 | 1981-10-22 | Multiple signal transmission system for car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5870657A true JPS5870657A (en) | 1983-04-27 |
Family
ID=15879837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16907481A Pending JPS5870657A (en) | 1981-10-22 | 1981-10-22 | Multiple signal transmission system for car |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5870657A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60194644A (en) * | 1984-03-15 | 1985-10-03 | Meidensha Electric Mfg Co Ltd | Loop transmitter |
| JPS60236340A (en) * | 1984-05-09 | 1985-11-25 | Asics Corp | Communication system |
| JPS6248834A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
| JPS6248835A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
| JPS6248836A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136742A (en) * | 1979-04-13 | 1980-10-24 | Toshiba Corp | Multiplex communication system |
-
1981
- 1981-10-22 JP JP16907481A patent/JPS5870657A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55136742A (en) * | 1979-04-13 | 1980-10-24 | Toshiba Corp | Multiplex communication system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60194644A (en) * | 1984-03-15 | 1985-10-03 | Meidensha Electric Mfg Co Ltd | Loop transmitter |
| JPH0669180B2 (en) * | 1984-03-15 | 1994-08-31 | 株式会社明電舍 | Loop transmission device |
| JPS60236340A (en) * | 1984-05-09 | 1985-11-25 | Asics Corp | Communication system |
| JPS6248834A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
| JPS6248835A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
| JPS6248836A (en) * | 1985-08-28 | 1987-03-03 | Mitsubishi Cable Ind Ltd | Wiring system for vehicle |
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