JPS56158921A - Method for generating revolution synchronizing pulse - Google Patents
Method for generating revolution synchronizing pulseInfo
- Publication number
- JPS56158921A JPS56158921A JP6285580A JP6285580A JPS56158921A JP S56158921 A JPS56158921 A JP S56158921A JP 6285580 A JP6285580 A JP 6285580A JP 6285580 A JP6285580 A JP 6285580A JP S56158921 A JPS56158921 A JP S56158921A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power source
- circuit
- revolutions
- inputted
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
- G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To obtain the pulses synchronized to the revolutions of an AC generator for diagnosis without stopping of the rotary machine by a means of generating pulses at the same phase point of source voltage from a commerical power source. CONSTITUTION:The AC voltage 4 obtained from a commercial power source in a power station is inputted to a halfwave rectifier circuit 1 in order to obtain one pulse per cycle. Next, the voltage 5 obtained in the circuit 1 is inputted to a comparator circuit. This yields such the voltage signal in which about half period out of one cycle wherein it is the voltage determined by a circuit constant below certain threshold value voltage Vs and is zero output voltage above the threshold value voltage Vs is of a high level and the other half period is of a low level. In this way, the pulses synchronized with the revolutions are obtained easily from the AC generator in a state of parallel operation with the commerical power source.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6285580A JPS56158921A (en) | 1980-05-14 | 1980-05-14 | Method for generating revolution synchronizing pulse |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6285580A JPS56158921A (en) | 1980-05-14 | 1980-05-14 | Method for generating revolution synchronizing pulse |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56158921A true JPS56158921A (en) | 1981-12-08 |
Family
ID=13212326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6285580A Pending JPS56158921A (en) | 1980-05-14 | 1980-05-14 | Method for generating revolution synchronizing pulse |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56158921A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008082967A (en) * | 2006-09-28 | 2008-04-10 | Toshiba Corp | Vibration diagnostic system for rotary machine |
-
1980
- 1980-05-14 JP JP6285580A patent/JPS56158921A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008082967A (en) * | 2006-09-28 | 2008-04-10 | Toshiba Corp | Vibration diagnostic system for rotary machine |
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