JPS60135942U - Microcomputer runaway monitoring device - Google Patents
Microcomputer runaway monitoring deviceInfo
- Publication number
- JPS60135942U JPS60135942U JP2261684U JP2261684U JPS60135942U JP S60135942 U JPS60135942 U JP S60135942U JP 2261684 U JP2261684 U JP 2261684U JP 2261684 U JP2261684 U JP 2261684U JP S60135942 U JPS60135942 U JP S60135942U
- Authority
- JP
- Japan
- Prior art keywords
- pulse width
- microcomputer
- monitoring device
- runaway monitoring
- pulse
- 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
Landscapes
- Manipulation Of Pulses (AREA)
- Debugging And Monitoring (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のマイクロコンピュータの暴走監視装置を
説明するためのブロック図、第２図は第１図の動作を説
明するための波形図、第３図はこ 、の考案の
一実施例を説明するための接続図、第４図及び第５図は
第３図の動作を説明するための波 ′形図、第６図は
この考案の変形実施例を説明するための接続図である。
１：マイクロコンピュータ、２：ウオッチドタイマ、３
：パルス幅変換手段、４：パルス幅判別手段、５，６：
単安定マルチバイブレータ、７：時定数回路、８：ナン
ドゲート。Figure 1 is a block diagram for explaining a conventional microcomputer runaway monitoring device, Figure 2 is a waveform diagram for explaining the operation of Figure 1, and Figure 3 is an example of this invention. 4 and 5 are waveform diagrams for explaining the operation of FIG. 3, and FIG. 6 is a connection diagram for explaining a modified embodiment of this invention. 1: Microcomputer, 2: Watched timer, 3
: Pulse width conversion means, 4: Pulse width discrimination means, 5, 6:
Monostable multivibrator, 7: Time constant circuit, 8: NAND gate.
Claims (1)
るパルスをこのパルスの周期に対応したパルス幅を持つ
矩形波信号に変換するパルス幅変換回路と、 リ このパルス幅変換回路から出力される矩形波のパル
ス幅が規定した範囲内にある状態でのみパルスを出力す
るパルス幅判別回路と、Ｃこのパルス幅判別回路の出力
により再トリガされ、パルス幅判別回路の出力パルスが
所定時間以上入力されないとき、上記マイクロコンピュ
ータにリセットパルスを与えるウオッチドタイマと、
− から成るマイクロコンピュータの暴走監視装置。[Claims for Utility Model Registration] A. A pulse width conversion circuit that converts pulses periodically output from a microcomputer into a rectangular wave signal having a pulse width corresponding to the period of the pulses, and (2) This pulse width conversion circuit. There is a pulse width discrimination circuit that outputs a pulse only when the pulse width of the rectangular wave output from C is within a specified range. a watched timer that provides a reset pulse to the microcomputer when no input is received for a predetermined period of time;
− A microcomputer runaway monitoring device consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2261684U JPS60135942U (en) | 1984-02-20 | 1984-02-20 | Microcomputer runaway monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2261684U JPS60135942U (en) | 1984-02-20 | 1984-02-20 | Microcomputer runaway monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60135942U true JPS60135942U (en) | 1985-09-10 |
Family
ID=30515077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2261684U Pending JPS60135942U (en) | 1984-02-20 | 1984-02-20 | Microcomputer runaway monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60135942U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576944A (en) * | 1980-06-13 | 1982-01-13 | Mitsubishi Electric Corp | Fault detecting device |
-
1984
- 1984-02-20 JP JP2261684U patent/JPS60135942U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS576944A (en) * | 1980-06-13 | 1982-01-13 | Mitsubishi Electric Corp | Fault detecting device |
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