JPH03194613A - Electronic circuit board - Google Patents
Electronic circuit boardInfo
- Publication number
- JPH03194613A JPH03194613A JP1332701A JP33270189A JPH03194613A JP H03194613 A JPH03194613 A JP H03194613A JP 1332701 A JP1332701 A JP 1332701A JP 33270189 A JP33270189 A JP 33270189A JP H03194613 A JPH03194613 A JP H03194613A
- Authority
- JP
- Japan
- Prior art keywords
- electronic circuit
- bus
- circuit board
- board
- power supply
- 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
- 238000000034 method Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000007257 malfunction Effects 0.000 abstract description 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/11—Printed elements for providing electric connections to or between printed circuits
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、活栓挿板する電子回路基板におけるバスドラ
イバの出力制御に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to output control of a bus driver in an electronic circuit board that is hot-plugged.
従来の技術は、特公昭６２−１９２８１４号に記載のよ
うに、外部に給電装置を設ける電子回路基板の全面にあ
るコネクタよりあらかじめ給電しておき、電子回路の素
子を安定させ、なおかつバスドライバのイネーブル制御
を行うスイッチで、バスドライバ出力をハイインピーダ
ンス状態にして、装置のオンライン中に電子回路基板を
脱着する方式となっていた。As described in Japanese Patent Publication No. 62-192814, the conventional technology is to supply power in advance from a connector on the entire surface of an electronic circuit board provided with an external power supply device, to stabilize the electronic circuit elements, and to improve bus driver performance. A switch that performs enable control puts the bus driver output in a high impedance state, allowing the electronic circuit board to be attached or removed while the device is online.
上記従来技術は、電子回路基板を斜めに脱着した場合で
もバス上の他の基板へ悪影響を与えないよう基板前面に
外部電源供給用コネクタ及びバスドライバイネーブル制
御用のスイッチを設けているため所要部品が多い。また
電子回路基板を挿入する際、外部電源供給用コネクタを
あらかじめ接続し、バスドライバイネーブル制御用スイ
ッチを切っておかなければならない。この為、操作手順
が複雑である。In the above conventional technology, an external power supply connector and a bus driver enable control switch are provided on the front of the board so that even if the electronic circuit board is installed and removed diagonally, it will not adversely affect other boards on the bus. There are many. Furthermore, when inserting an electronic circuit board, the external power supply connector must be connected in advance and the bus driver enable control switch must be turned off. Therefore, the operating procedure is complicated.
本発明の目的は上記従来技術の問題点を解決し装置のオ
ンライン中に、保守者のより単純な操作で、複雑な手順
を踏むことなしに挿入可能で、かつ経済的な電子回路基
板を提供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art, and to provide an economical electronic circuit board that can be inserted by a maintenance person with simpler operations and without complicated procedures while the device is online. It's about doing.
上記目的を達成するために電子回路基板のコネクタ上６
部、中部、下部に’Ｒ，ｇ供給用端子を配置し、その端
子の中間部にバス信号線を配置して、斜めに基板を挿入
した際においてもバス信号線より電源供給用端子が確実
に先に接続するような端ｆ・配置とし、電源が供給され
てからある時定数の間、バスドライバの出力を、他のバ
ス上の基板に悪影響を与えないようにハイインピーダン
ス状態にするバスドライバ制御回路を付加したものであ
る。6. On the connector of the electronic circuit board to achieve the above purpose
'R, g supply terminals are placed in the upper part, middle part, and lower part, and the bus signal line is placed in the middle of the terminals, so that the power supply terminal is more secure than the bus signal line even when the board is inserted diagonally. The bus driver's output is placed in a high-impedance state for a certain time constant after power is supplied, so as not to adversely affect boards on other buses. A driver control circuit is added.
〔作用〕
装置のオンライン動作中に、電子回路基板を、コネクタ
付印刷配線板に挿入する際、電源供給用端子は、バス信
号線を収容する端子よりも先に接触し、電子回路基板に
電源が供給される。この電源供給と同時に時定数をもっ
たバストライバ制御回路を動作させる。これによりバス
ドライバの出力はハイインピーダンス状態となる。この
後にバス信号線を収容する端子が接触、ハイインピーダ
ンス状態のままバスに接続するので他の同じバスに接続
する電子回路基板の動作に影響を及ぼすことがない。[Function] When inserting an electronic circuit board into a printed wiring board with a connector during online operation of the device, the power supply terminal comes into contact before the terminal that accommodates the bus signal line, and the power supply is applied to the electronic circuit board. is supplied. Simultaneously with this power supply, a bus driver control circuit with a time constant is operated. As a result, the output of the bus driver becomes a high impedance state. After this, the terminals accommodating the bus signal lines are connected to the bus in a contact and high impedance state, so that the operations of other electronic circuit boards connected to the same bus are not affected.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
電子回路基板の基板側電子端子４ａは上部及び下部をア
ースとし、中部を電源電圧供給用とする。The upper and lower parts of the board-side electronic terminal 4a of the electronic circuit board are grounded, and the middle part is used for supplying power supply voltage.
またはアースと電源電圧供給用を逆にしてもよい。Alternatively, the ground and power voltage supply may be reversed.
基板側バス信号線端子４ｂは上記基板側電子端子４ａの
中間に配置する。The board-side bus signal line terminal 4b is arranged between the board-side electronic terminals 4a.
ここで電子回路基板７をコネクタ付印刷配線板２へ挿入
する場合について説明する。Here, the case where the electronic circuit board 7 is inserted into the printed wiring board 2 with a connector will be explained.
電子回路基板７をコネクタ付印刷配線基板２に挿入する
際、まず電源供給用の印刷配線板側電源端子３ａと基板
側電源端子４ａが接続される。これにより電子回路基板
に電源が供給され、電子回路内の各素子が可動状態とな
る。またそれと同時にバスドライバ制御回路５が働き、
電源供給からある時間だけバスドライバ６の出力をハイ
インピーダンス状態にする。一方、バス信号線を収容す
る基板側バス信号線端子４ｂは基板側電源端子４ａより
短いためこのバスドライバ６の出力がハイインピーダン
ス状態になってからコネクタ付印刷配線板２の印刷配線
板側バス信号線端子３ｂに接続される。これにより、同
一バス上に接続中の他の電−！−回路基板に影響を与え
ずに、装置のオンライン動作中に電子回路基板を挿入す
ることが可能となる。When inserting the electronic circuit board 7 into the printed wiring board 2 with a connector, first, the printed wiring board side power terminal 3a for power supply and the board side power terminal 4a are connected. As a result, power is supplied to the electronic circuit board, and each element within the electronic circuit becomes movable. At the same time, the bus driver control circuit 5 operates,
The output of the bus driver 6 is placed in a high impedance state for a certain period of time after power is supplied. On the other hand, since the board-side bus signal line terminal 4b that accommodates the bus signal line is shorter than the board-side power supply terminal 4a, the output of this bus driver 6 becomes a high impedance state before the printed wiring board side bus of the printed wiring board 2 with connector is connected. It is connected to the signal line terminal 3b. This allows you to connect other devices on the same bus! - It is possible to insert an electronic circuit board during online operation of the device without affecting the circuit board.
また第１図に示すように、基板側電源端子４ａを電子回
路基板７の上部、中部、下部に配置し、その間に信号線
を収容する基板側バス信号線端子４ｂを配にすることに
より、電子回路基板を斜めに挿入した場合においても必
ず電源が先に供給されバス信号線がそのあとに接続され
るようになり、より確実に上記オンライン動作中の電子
回路基板挿入が可能となる。Furthermore, as shown in FIG. 1, by arranging the board-side power supply terminals 4a at the top, middle, and bottom of the electronic circuit board 7, and by arranging the board-side bus signal line terminals 4b for accommodating signal lines between them, Even when the electronic circuit board is inserted diagonally, power is always supplied first and the bus signal line is connected afterwards, making it possible to more reliably insert the electronic circuit board during the online operation.
この方法によれば、電子回路基板の挿入の際、特別な手
順、特別な機器を必要としない為、誤操作の可能性が低
減され、安全かつ経済的な電子回路基板が提供できる。According to this method, no special procedure or special equipment is required when inserting the electronic circuit board, so the possibility of erroneous operation is reduced, and a safe and economical electronic circuit board can be provided.
本発明によれば、装置のオンライン動作中に、装置を誤
動作させることなく電子回路基板の脱着を容易にしかも
複雑な操作及び手順もなく行えるため、操作性及び保守
性が向上するという効果がある。According to the present invention, the electronic circuit board can be easily attached and detached without causing the device to malfunction during online operation of the device, and without complicated operations or procedures, resulting in improved operability and maintainability. .
第１図は本発明の一実施例の電子回路基板とコネクタ付
印刷配線板の構造及び構成を示した図である。
１・・・コネクタ。
２・・・コネクタ付印刷配線板。
３ａ・・・印刷配線板側電源端子。
３ｂ・・・印刷配線板側バス信号線端子。
４ａ ・基板側電源端子。
４ｂ・・基板側バス信号線端子。
５・・・バスドライバ制御回路。
６・・・バスドライバ、 ７・・・電子回路基板。FIG. 1 is a diagram showing the structure and configuration of an electronic circuit board and a printed wiring board with a connector according to an embodiment of the present invention. 1... Connector. 2...Printed wiring board with connector. 3a...Printed wiring board side power terminal. 3b... Printed wiring board side bus signal line terminal. 4a ・Board side power supply terminal. 4b: Board side bus signal line terminal. 5... Bus driver control circuit. 6... Bus driver, 7... Electronic circuit board.
Claims (1)
バス接続用端子を経由して共通バスと接続する電子回路
から成り活栓状態で挿板をする電子回路基板において、
活栓挿入した際、該電源接続用端子経由で該電子回路基
板に電源が印加されたことを検知した後、共通バスと接
続されるバスドライバの出力をタイマにより一定時間だ
けハイインピーダンスにするバスドライバ制御回路を設
けたことを特徴とする電子回路基板。 ２、該電子回路基板の端子配置において、電源接続用端
子を該電子回路基板の上部、中部、下部に配置し、正極
を上部及び下部、負極を中部に収容し、または前述とは
逆に正極を中部に、負極を上部及び下部に収容すること
を特徴とした請求項１記載の電子回路基板。[Claims] 1. An electronic circuit board that is inserted into a stoppered state and is comprised of a common bus connection terminal, a power supply connection terminal, and an electronic circuit that connects to the common bus via the common bus connection terminal. In,
A bus driver that, when a stopcock is inserted, detects that power is applied to the electronic circuit board via the power supply connection terminal, and then sets the output of the bus driver connected to the common bus to high impedance for a certain period of time using a timer. An electronic circuit board characterized by being provided with a control circuit. 2. In the terminal arrangement of the electronic circuit board, the power supply connection terminals are placed at the top, middle, and bottom of the electronic circuit board, and the positive electrode is housed in the top and bottom, and the negative electrode is housed in the middle, or contrary to the above, the positive electrode 2. The electronic circuit board according to claim 1, wherein the electronic circuit board is housed in the middle part and the negative electrodes are housed in the upper and lower parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1332701A JPH03194613A (en) | 1989-12-25 | 1989-12-25 | Electronic circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1332701A JPH03194613A (en) | 1989-12-25 | 1989-12-25 | Electronic circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03194613A true JPH03194613A (en) | 1991-08-26 |
Family
ID=18257907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1332701A Pending JPH03194613A (en) | 1989-12-25 | 1989-12-25 | Electronic circuit board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03194613A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05204785A (en) * | 1992-01-29 | 1993-08-13 | Fujitsu Ltd | System, method, and device for protecting monitor bus |
| JPH0728574A (en) * | 1993-07-09 | 1995-01-31 | Nec Corp | Live-line inserting and extracting system |
-
1989
- 1989-12-25 JP JP1332701A patent/JPH03194613A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05204785A (en) * | 1992-01-29 | 1993-08-13 | Fujitsu Ltd | System, method, and device for protecting monitor bus |
| JPH0728574A (en) * | 1993-07-09 | 1995-01-31 | Nec Corp | Live-line inserting and extracting system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1997027728A3 (en) | Control device, especially for a motor vehicle | |
| NO177655C (en) | External adapter circuit board for one of two discrete bus architectures in a computer system | |
| TW430762B (en) | A main board for an easily-upgradable computer | |
| JPH0757062A (en) | Electronic equipment | |
| EP0735623A3 (en) | Electrical connector | |
| JPH03194613A (en) | Electronic circuit board | |
| EP0213046A3 (en) | Electronic card connecting circuit | |
| TW356524B (en) | A test board which can test IC devices operating in either merged data output mode or standard mode | |
| GB2226167A (en) | Improvements in or relating to microcomputers | |
| JPH0765908A (en) | Emergency stopping circuit for robot etc. | |
| JPH0716304Y2 (en) | Memory circuit protection structure | |
| JPS62120547A (en) | Connection system for in-circuit emulator | |
| JPS61281317A (en) | Electronic apparatus capable of using extension memory cartridge | |
| JPS63188894A (en) | Rom board | |
| JPH11305875A (en) | Communication equipment | |
| JP2667570B2 (en) | Processor status display device of multi-computer system | |
| JPH08202474A (en) | Connector connection detecting circuit | |
| JP2022105951A (en) | Control system | |
| JPH04232584A (en) | Device for preventing erroneous setting of card | |
| JPS60252932A (en) | Detector for misinsertion of unit | |
| JPH05157793A (en) | Power source circuit with check of shortcircuiting | |
| JPH04121979A (en) | Detection system for connector connection condition | |
| JPH0573439A (en) | Printed wiring board and data relief system | |
| JPH07182074A (en) | Hot-line insertion and pull-out device for hot standby type duplex system | |
| JPH0563044A (en) | Ic socket with testing functions |