JPH0317524U - - Google Patents
Info
- Publication number
- JPH0317524U JPH0317524U JP7764989U JP7764989U JPH0317524U JP H0317524 U JPH0317524 U JP H0317524U JP 7764989 U JP7764989 U JP 7764989U JP 7764989 U JP7764989 U JP 7764989U JP H0317524 U JPH0317524 U JP H0317524U
- Authority
- JP
- Japan
- Prior art keywords
- knock sensor
- abnormality
- microcomputer
- detection device
- predetermined time
- 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
- 230000005856 abnormality Effects 0.000 claims 5
- 238000001514 detection method Methods 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案による一実施例の回路図、第２
図は第１図の信号波形図、第３図は本考案のフロ
ーチヤート、第４図は従来の回路図を示す。
１……ノツキング信号積分回路、２……マイコ
ン。
Figure 1 is a circuit diagram of an embodiment of the present invention;
The figure shows the signal waveform diagram of FIG. 1, FIG. 3 shows a flowchart of the present invention, and FIG. 4 shows a conventional circuit diagram. 1...Knocking signal integrator circuit, 2...Microcomputer.
Claims (1)
ンサの異常を検出するノツクセンサ異常検出装置
において、ノツクセンサの出力信号を信号処理し
て、所定時間毎に積分してマイクロコンピユータ
に出力する積分回路を設け、該積分回路の積分出
力に対して上限値、下限値を設定し、前記所定時
間毎の積分出力が上下限値の範囲内に入らない時
は異常であると判定する異常判定手段をマイクロ
コンピユータに設けたことを特徴とするノツクセ
ンサ異常検出装置。 A knock sensor abnormality detection device for detecting an abnormality in a knock sensor based on an output signal of the knock sensor is provided with an integrating circuit that processes the output signal of the knock sensor, integrates it at predetermined time intervals, and outputs the result to a microcomputer. The microcomputer is provided with an abnormality determination means for setting an upper limit value and a lower limit value for the integral output of and determining that an abnormality occurs when the integral output at each predetermined time does not fall within the range of the upper and lower limit values. A knock sensor abnormality detection device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7764989U JPH0317524U (en) | 1989-07-03 | 1989-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7764989U JPH0317524U (en) | 1989-07-03 | 1989-07-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0317524U true JPH0317524U (en) | 1991-02-21 |
Family
ID=31620230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7764989U Pending JPH0317524U (en) | 1989-07-03 | 1989-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0317524U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164234A (en) * | 1984-02-06 | 1985-08-27 | Toyota Motor Corp | Abnormality judging method for knocking detector |
-
1989
- 1989-07-03 JP JP7764989U patent/JPH0317524U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164234A (en) * | 1984-02-06 | 1985-08-27 | Toyota Motor Corp | Abnormality judging method for knocking detector |