JPS6443462U - - Google Patents
Info
- Publication number
- JPS6443462U JPS6443462U JP13914887U JP13914887U JPS6443462U JP S6443462 U JPS6443462 U JP S6443462U JP 13914887 U JP13914887 U JP 13914887U JP 13914887 U JP13914887 U JP 13914887U JP S6443462 U JPS6443462 U JP S6443462U
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- normal
- runaway
- microcomputers
- signal
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Debugging And Monitoring (AREA)
- Multi Processors (AREA)
Description
第１図は本考案の一実施例のブロツク構成図、
第２図は第１図のタイミングチヤート、第３図は
従来回路のブロツク構成図、第４図は第３図のタ
イミングチヤートである。
ＣＰＵ１〜ＣＰＵｎ……マイクロコンピユータ
、ＷＯ……正常信号出力ポート、Ｒ……リセツト
信号入力ポート、ＷＴ……暴走検出部、ＴＵ……
タイムアツプ信号出力端子（リセツト信号出力用
端子）。
FIG. 1 is a block diagram of an embodiment of the present invention.
2 is a timing chart of FIG. 1, FIG. 3 is a block diagram of a conventional circuit, and FIG. 4 is a timing chart of FIG. 3. CPU1 to CPUn...Microcomputer, WO...Normal signal output port, R...Reset signal input port, WT...Runaway detection unit, TU...
Time-up signal output terminal (reset signal output terminal).
Claims (1)
するマイクロコンピユータを多数並列動作させる
場合に、この各マイクロコンピユータのそれぞれ
の正常信号を監視するとともに、何れかのマイク
ロコンピユータの暴走による正常信号の不出力を
暴走検出部で検出してマイクロコンピユータをリ
セツトするマイクロコンピユータの暴走検出回路
において、前記各マイクロコンピユータにそれぞ
れ、他のマイクロコンピユータの正常信号を監視
して正常信号入力時のみ自体の正常信号を出力す
るプログラムを内蔵し、この各マイクロコンピユ
ータを、正常信号の入、出力においてシリアル接
続するとともに、最後段のマイクロコンピユータ
の正常信号出力ポートを単一の前記暴走検出部に
接続し、この暴走検出部のリセツト信号出力用端
子を、前記各マイクロコンピユータのリセツト信
号入力ポートにそれぞれ接続したことを特徴とす
るマイクロコンピユータの暴走検出回路。 (2) 前記暴走検出部を、各マイクロコンピユー
タの正常信号の周期に基く所定のタイマ時間を設
定したウオツチドグタイマで構成したことを特徴
とする実用新案登録請求の範囲第１項に記載のマ
イクロコンピユータの暴走検出回路。[Claims for Utility Model Registration] (1) When operating a large number of microcomputers in parallel that output normal signals at regular intervals only during normal operation, the normal signals of each of these microcomputers are monitored, and any In the microcomputer runaway detection circuit, which detects failure of a normal signal due to runaway of the microcomputer in the runaway detection section and resets the microcomputer, each of the microcomputers monitors the normal signals of other microcomputers and detects normality. It has a built-in program that outputs its own normal signal only when a signal is input, and each microcomputer is serially connected for normal signal input and output, and the normal signal output port of the final stage microcomputer is connected to the single runaway signal. A runaway detection circuit for a microcomputer, characterized in that the runaway detection circuit is connected to a detection section, and a reset signal output terminal of the runaway detection section is connected to a reset signal input port of each of the microcomputers. (2) The utility model according to claim 1, characterized in that the runaway detection section is constituted by a watchdog timer in which a predetermined timer time is set based on the period of the normal signal of each microcomputer. Microcomputer runaway detection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13914887U JPS6443462U (en) | 1987-09-10 | 1987-09-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13914887U JPS6443462U (en) | 1987-09-10 | 1987-09-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6443462U true JPS6443462U (en) | 1989-03-15 |
Family
ID=31402138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13914887U Pending JPS6443462U (en) | 1987-09-10 | 1987-09-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6443462U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59165169A (en) * | 1983-03-11 | 1984-09-18 | Fujitsu Ltd | System trouble detector |
-
1987
- 1987-09-10 JP JP13914887U patent/JPS6443462U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59165169A (en) * | 1983-03-11 | 1984-09-18 | Fujitsu Ltd | System trouble detector |
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