JPS62162634U - - Google Patents
Info
- Publication number
- JPS62162634U JPS62162634U JP5083986U JP5083986U JPS62162634U JP S62162634 U JPS62162634 U JP S62162634U JP 5083986 U JP5083986 U JP 5083986U JP 5083986 U JP5083986 U JP 5083986U JP S62162634 U JPS62162634 U JP S62162634U
- Authority
- JP
- Japan
- Prior art keywords
- polarity
- waveform data
- sampling number
- sound
- time waveform
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims description 6
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 8
- 230000002159 abnormal effect Effects 0.000 claims 3
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案の実施例装置を示すブロツク構
成図、第２図はデジタル時間波形データを示す波
形図である。
図面中、１はセンサ、２はアンプ、３はアナロ
グフイルタ、４はＡ／Ｄ変換器、５はコンピユー
タ、６は極性変化検出部、７はメモリ、８は周波
数算出部、９は異常判定部、１０は表示装置であ
る。
FIG. 1 is a block diagram showing a device according to an embodiment of the present invention, and FIG. 2 is a waveform diagram showing digital time waveform data. In the drawing, 1 is a sensor, 2 is an amplifier, 3 is an analog filter, 4 is an A/D converter, 5 is a computer, 6 is a polarity change detection section, 7 is a memory, 8 is a frequency calculation section, and 9 is an abnormality determination section , 10 is a display device.
Claims (1)
たは音に対応したアナログ時間波形データを出力
するセンサと、 前記アナログ時間波形データを一定のサンプリ
ング間隔ごとにアナログ／デジタル変換して離散
形のデジタル時間波形データに変換する変換手段
と、 前記デジタル時間波形データの極性が規定パタ
ーンに沿ない変化するたびにその変化の直前のサ
ンプリングナンバーを検出する極性変化検出部と
、 検出されたサンプリングナンバーを記憶するメ
モリと、 メモリに順次記憶された複数のサンプリングナ
ンバーについて先行するサンプリングナンバーと
その直後のサンプリングナンバーとの間の時間を
それぞれ求め、この時間を基に両サンプリングナ
ンバー間での周波数を算出する周波数算出部と、 順次算出された周波数が急変したときに異常で
あると判定する異常判定部と、を備えたことを特
徴とする異常振動または音の検出装置。 (2) 実用新案登録請求の範囲第１項において、
前記極性変化検出部は、前記デジタル時間波形デ
ータの正負極性が一方の極性から他方の極性に変
化するたびにその変化の直前のサンプリングナン
バーを検出することを特徴とする異常振動または
音の検出装置。 (3) 実用新案登録請求の範囲第１項において、
前記極性変化検出部は、前記デジタル時間波形デ
ータの正負極性が反転するたびにその反転の直前
のサンプリングナンバーを検出することを特徴と
する異常振動または音の検出装置。[Claims for Utility Model Registration] (1) A sensor that detects vibration or sound of an object and outputs analog time waveform data corresponding to the vibration or sound; /conversion means for digitally converting the digital time waveform data into discrete digital time waveform data; and a polarity change detection unit that detects a sampling number immediately before the change every time the polarity of the digital time waveform data changes along a prescribed pattern. , a memory that stores the detected sampling number, and a time between the preceding sampling number and the immediately following sampling number for multiple sampling numbers sequentially stored in the memory, and calculating both sampling numbers based on this time. What is claimed is: 1. An abnormal vibration or sound detection device comprising: a frequency calculation unit that calculates a frequency between the frequencies; and an abnormality determination unit that determines that there is an abnormality when the sequentially calculated frequencies suddenly change. (2) In paragraph 1 of the claims for utility model registration,
An apparatus for detecting abnormal vibration or sound, characterized in that the polarity change detection section detects a sampling number immediately before the change every time the positive/negative polarity of the digital time waveform data changes from one polarity to the other polarity. (3) In paragraph 1 of the claims for utility model registration,
The abnormal vibration or sound detection device is characterized in that the polarity change detection unit detects a sampling number immediately before the reversal every time the positive/negative polarity of the digital time waveform data is reversed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5083986U JPH0449554Y2 (en) | 1986-04-07 | 1986-04-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5083986U JPH0449554Y2 (en) | 1986-04-07 | 1986-04-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62162634U true JPS62162634U (en) | 1987-10-16 |
| JPH0449554Y2 JPH0449554Y2 (en) | 1992-11-20 |
Family
ID=30874562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5083986U Expired JPH0449554Y2 (en) | 1986-04-07 | 1986-04-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0449554Y2 (en) |
-
1986
- 1986-04-07 JP JP5083986U patent/JPH0449554Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0449554Y2 (en) | 1992-11-20 |
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