JPS6283931U - - Google Patents
Info
- Publication number
- JPS6283931U JPS6283931U JP17419985U JP17419985U JPS6283931U JP S6283931 U JPS6283931 U JP S6283931U JP 17419985 U JP17419985 U JP 17419985U JP 17419985 U JP17419985 U JP 17419985U JP S6283931 U JPS6283931 U JP S6283931U
- Authority
- JP
- Japan
- Prior art keywords
- data
- waveform data
- frequency analysis
- discrete
- 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
- 230000002159 abnormal effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 230000013011 mating Effects 0.000 description 1
Landscapes
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Description
第１図は本考案の一実施例装置のブロツク構成
図、第２図は測定された時間波形データ例の説明
図、第３図は測定された周波数分析波形データ例
の説明図、第４図と第５図はそれぞれ波形判定に
おける計算の説明図である。
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ＦＦＴ装置
、６はメモリ部、７は波形判定部、８は正常波形
データ部、９は位相合せ部、１０はＣＰＵ、１１
は位相合せ用センサ、１２は表示装置である。
Fig. 1 is a block diagram of a device according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of an example of measured time waveform data, Fig. 3 is an explanatory diagram of an example of measured frequency analysis waveform data, and Fig. 4 is an explanatory diagram of an example of measured frequency analysis waveform data. and FIG. 5 are explanatory diagrams of calculations in waveform determination, respectively. In the drawing, 1 is a sensor, 2 is an amplifier, 3 is an analog filter, 4 is an A/D converter, 5 is an FFT device, 6 is a memory section, 7 is a waveform judgment section, 8 is a normal waveform data section, and 9 is a phase The mating part, 10 is the CPU, 11
12 is a phase alignment sensor, and 12 is a display device.
Claims (1)
サと、センサからの時間波形信号を離散形データ
に変換するデジタル処理手段と、デジタル処理手
段から得られる離散形の時間波形データを周波数
分析するフーリエ変換手段と、上記デジタル処理
手段から得られる離散形の時間波形データ及び上
記フーリエ変換手段から得られる離散形の周波数
分析波形データを記憶する記憶手段と、記憶され
た時間波形データと予め定めた正常な場合の時間
波形データとの間で時刻が対応するデータどうし
の差の２乗の和を計算すると共に記憶された周波
数分析波形データと予め定めた正常な場合の周波
数分析波形データとの間で周波数が対応するデー
タどうしの差の２乗の和を計算し、得られた上記
和の値をそれぞれに対し予め定めた基準値と比較
して上記センサの検出対象である振動または音が
異常であるか否かを判定する波形判定手段と、予
め定めた正常な場合の上記時間波形データ及び周
波数分析波形データが離散形データとして記憶さ
れている記憶手段と、上記波形判定手段に入力さ
れる２種の時間波形データ間の位相を合わせる手
段とを具備する異常振動または音の検出装置。 A sensor that detects the time waveform of an object's vibration or sound, a digital processing means that converts the time waveform signal from the sensor into discrete data, and a Fourier transform that performs frequency analysis of the discrete time waveform data obtained from the digital processing means. storage means for storing discrete time waveform data obtained from the digital processing means and discrete frequency analysis waveform data obtained from the Fourier transform means; Calculate the sum of the squares of the differences between data whose time corresponds to the time waveform data of the case, and calculate the frequency between the stored frequency analysis waveform data and the predetermined normal case frequency analysis waveform data. calculates the sum of the squares of the differences between the corresponding data, and compares the obtained sum value with a predetermined reference value for each to determine whether the vibration or sound that is detected by the sensor is abnormal. a waveform determining means for determining whether or not the above-described time waveform data and frequency analysis waveform data in a predetermined normal case are stored as discrete data; and two types of input data to the waveform determining means. and means for adjusting the phase between the time waveform data of the abnormal vibration or sound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985174199U JPH0346342Y2 (en) | 1985-11-14 | 1985-11-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985174199U JPH0346342Y2 (en) | 1985-11-14 | 1985-11-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6283931U true JPS6283931U (en) | 1987-05-28 |
| JPH0346342Y2 JPH0346342Y2 (en) | 1991-09-30 |
Family
ID=31112366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985174199U Expired JPH0346342Y2 (en) | 1985-11-14 | 1985-11-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0346342Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200144A (en) * | 2012-03-23 | 2013-10-03 | Mitsubishi Electric Corp | Abnormal sound diagnosis device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110831U (en) * | 1982-01-22 | 1983-07-28 | 株式会社日立製作所 | Equipment failure prevention diagnostic device |
| JPS5997018A (en) * | 1982-11-26 | 1984-06-04 | Mitsubishi Electric Corp | Inspector for equipment with sound or vibration |
-
1985
- 1985-11-14 JP JP1985174199U patent/JPH0346342Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58110831U (en) * | 1982-01-22 | 1983-07-28 | 株式会社日立製作所 | Equipment failure prevention diagnostic device |
| JPS5997018A (en) * | 1982-11-26 | 1984-06-04 | Mitsubishi Electric Corp | Inspector for equipment with sound or vibration |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013200144A (en) * | 2012-03-23 | 2013-10-03 | Mitsubishi Electric Corp | Abnormal sound diagnosis device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346342Y2 (en) | 1991-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH11313806A5 (en) | ||
| JPS6283931U (en) | ||
| JPS63182245U (en) | ||
| JPS6220340U (en) | ||
| JPS6375810U (en) | ||
| JPH0227240U (en) | ||
| JPS62162634U (en) | ||
| JPS61163980U (en) | ||
| JPH0299368U (en) | ||
| JPS6213992U (en) | ||
| JPS6348136U (en) | ||
| JPS6255131U (en) | ||
| JPH0317506U (en) | ||
| JPH0451615U (en) | ||
| JPS5928795U (en) | Analyzer calibration device | |
| JPS63128411U (en) | ||
| JPS5892604U (en) | Buried pipe length measurement method | |
| JPS6234362U (en) | ||
| JPS63190985U (en) | ||
| JPS62147078U (en) | ||
| JPS5921732U (en) | balance system | |
| JPH03127944U (en) | ||
| JPS6433632U (en) | ||
| JPH0317524U (en) | ||
| JPH01180729U (en) |