JPH0164747U - - Google Patents
Info
- Publication number
- JPH0164747U JPH0164747U JP1987161143U JP16114387U JPH0164747U JP H0164747 U JPH0164747 U JP H0164747U JP 1987161143 U JP1987161143 U JP 1987161143U JP 16114387 U JP16114387 U JP 16114387U JP H0164747 U JPH0164747 U JP H0164747U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- outputs
- digital signal
- microcomputer
- switching element
- 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 1
- 230000004069 differentiation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Debugging And Monitoring (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図はマイクロコンピユータの通常時の動作を示す
フローチヤートである。
１……マイクロコンピユータ、６……ヒータ（
被制御体）、９……微分回路、１０……積分回路
、１１……比較回路、Ｑ２……トランジスタ（ス
イツチング素子）。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a flowchart showing the normal operation of the microcomputer. 1... Microcomputer, 6... Heater (
Controlled object), 9...Differentiating circuit, 10... Integrating circuit, 11... Comparing circuit, Q2 ... Transistor (switching element).
Claims (1)
、一定周期のデジタル信号を出力するマイクロコ
ンピユータと、このデジタル信号を微分する微分
回路と、この微分波形に同期してスイツチング動
作するスイツチング素子と、このスイツチング素
子に接続され前記デジタル信号が一定周期で出力
されているとき所定の電圧を出力する積分回路と
、この積分回路の出力電圧が予め設定された値を
越えたときリセツト信号を出力する比較回路とを
備えたことを特徴とするマイクロコンピユータの
迷走検知回路。 A microcomputer that has a program necessary to control a controlled object and outputs a digital signal of a constant period, a differentiation circuit that differentiates this digital signal, and a switching element that performs a switching operation in synchronization with this differential waveform. An integrating circuit that is connected to this switching element and outputs a predetermined voltage when the digital signal is output at a constant cycle, and a comparison circuit that outputs a reset signal when the output voltage of this integrating circuit exceeds a preset value. A stray detection circuit for a microcomputer, characterized by comprising a circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987161143U JPH0164747U (en) | 1987-10-21 | 1987-10-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987161143U JPH0164747U (en) | 1987-10-21 | 1987-10-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0164747U true JPH0164747U (en) | 1989-04-25 |
Family
ID=31443834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987161143U Pending JPH0164747U (en) | 1987-10-21 | 1987-10-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0164747U (en) |
-
1987
- 1987-10-21 JP JP1987161143U patent/JPH0164747U/ja active Pending