METHOD, APPARATUS AND MONITORING SYSTEM FOR ACQUISITION OF ROTATING SPEED AND VIBRATION DATA OF MACHINES

• US 20170052062A1
• Filed: 08/17/2016
• Published: 02/23/2017
• Est. Priority Date: 08/17/2015
• Status: Active Grant

• Current Assignee: Anhui Ronds Science & Technology Incorporated Company
• Original Assignee: Anhui Ronds Science & Technology Incorporated Company
• Inventors: JIA, Weiyin, LIU, Gang, YIN, Xianjun, CHEN, Liang
• Granted Patent: US 10,175,261 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01H 1/003 of rotating machines G01H1/10 takes precedence
• CPC Class Codes: G01M 13/028 Acoustic or vibration analysis
• CPC Class Codes: G01M 13/045 Acoustic or vibration analysis
• CPC Class Codes: G01P 3/481 of pulse signals

Abstract

The invention discloses a method, an apparatus, and a monitoring system for acquisition of a machine'"'"'s rotating speed and vibration data. A machine rotating speed acquisition apparatus according to the inventive disclosure comprises a speed sensor and a controlling unit. The speed sensor is operative to count the pulses triggered during the rotation of the machine so as to acquire the machine'"'"'s rotating speed. The controlling unit is operative to record the triggering moment of each pulse. Furthermore, each time when a pulse triggering moment is recorded, a rotating speed time scale message containing that pulse triggering moment is broadcasted to at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to receive that rotating speed time scale message and record the local time when receiving that message.

Claims

1. A machine rotating speed acquisition apparatus, comprising:

a speed sensor operative to count pulses triggered during rotation of a machine so as to acquire the machine'"'"'s rotating speed;

a controlling unit operative to record the triggering moment of each pulse, and each time a pulse triggering moment is recorded, broadcast a rotating speed time scale message containing the pulse triggering moment to at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to receive the rotating speed time scale message and record a local time when receiving the rotating speed time scale message.

2. The machine rotating speed acquisition apparatus of claim 1, said controlling unit is further operative to:

send an acquisition start command to said at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to acquire vibration data for order analysis in response to that acquisition start command;

send an acquisition end command to said at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to stop acquiring vibration data for order analysis according to that acquisition end command.

3. A machine vibration data acquisition apparatus, comprising:

a vibration sensor operative to acquire from a machine vibration data for order analysis; and

a controlling unit operative to

record acquisition moments each corresponding to a predetermined number of sampled values of vibration data,

receive a rotating speed time scale message from a machine rotating speed acquisition apparatus, said rotating speed time scale message containing a pulse triggering moment of a speed sensor during the rotation of the machine; and

record a reception moment of said rotating speed time scale message.

4. The machine vibration data acquisition apparatus of claim 3, said controlling unit is further operative to:

receive an acquisition start command from the machine rotating speed acquisition apparatus, and instruct the vibration sensor to acquire vibration data for order analysis according to the acquisition start command; and

receive an acquisition end command from the machine rotating speed acquisition apparatus, and instruct the vibration sensor to stop acquiring vibration data for order analysis according to the end command.

5. The machine vibration data acquisition apparatus of claim 4, wherein said acquisition end command contains the number of pulse triggering moments that have been broadcasted since the acquisition start command, said controlling unit is further operative to:

according to the number of pulse triggering moments that have been broadcasted, determine whether the number of loss of the reception moments of the rotating speed time scale messages is less than a threshold; and

if the number of loss is less than the threshold,

conduct a linear fitting according to the reception moments of the rotating speed time scale messages that are not lost and the corresponding pulse triggering moments, so as to calculate the reception moments of the rotating speed time scale messages that are lost; and

store in association the pulse triggering moments, the reception moments of rotating speed time scale messages, the vibration data for order analysis, and the acquisition moments as valid order analysis data, in order for the server that obtains the valid order analysis data to conduct equal angle resampling operations when performing diagnostic analysis.

6. The machine vibration data acquisition apparatus of claim 5, said controlling unit is further operative to:

if said number of loss is greater than said threshold, store the pulse triggering moments, the reception moments of rotating speed time scale messages, the vibration data for order analysis, and the acquisition moments as invalid order analysis data.

7. The machine vibration data acquisition apparatus of claim 5, said controlling unit is further operative to send the valid order analysis data to an acquisition station.

8. A machine rotating speed acquisition method, comprising:

acquiring a machine'"'"'s rotating speed by counting pulses triggered by a speed sensor during the rotation of the machine;

recording a triggering moment of each pulse; and

each time a pulse triggering moment is recorded, broadcasting a rotating speed time scale message containing the pulse triggering moment to at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to receive the rotating speed time scale message and record the local time when receiving the rotating speed time scale message.

9. The machine rotating speed acquisition method of claim 8, further comprising:

sending an acquisition start command to said at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to acquire vibration data for order analysis in response to the acquisition start command.

10. The machine rotating speed acquisition method of claim 9, further comprising:

sending an acquisition end command to said at least one machine vibration data acquisition apparatus, in order for said at least one machine vibration data acquisition apparatus to stop acquiring vibration data for order analysis according to the acquisition end command.

11. The machine rotating speed acquisition method of claim 8, wherein said rotating speed time scale message further contains the sending sequence numbers of the pulse triggering moment and of at least one adjacent pulse triggering moment before that pulse triggering moment.

12. The machine rotating speed acquisition method of claim 10, wherein said acquisition end command contains the number of pulse triggering moments that have been broadcasted since the acquisition start command.

13. A machine vibration data acquisition method, comprising:

acquiring vibration data for order analysis of a machine through a vibration sensor;

recording acquisition moments each corresponding a predetermined number of sampled values of vibration data;

receiving a rotating speed time scale message from a machine rotating speed acquisition apparatus, said rotating speed time scale message containing a pulse triggering moment of a speed sensor during the rotation of the machine; and

recording the reception moment of the rotating speed time scale message.

14. The machine vibration data acquisition method of claim 13, further comprising:

receiving an acquisition start command from the machine rotating speed acquisition apparatus, and instruct the vibration sensor to acquire vibration data for order analysis according to that acquisition start command; and

receiving an acquisition end command from the machine rotating speed acquisition apparatus, and instruct the vibration sensor to stop acquiring vibration data for order analysis according to the acquisition end command.

15. The machine vibration data acquisition method of claim 14, wherein said rotating speed time scale message further contains the sending sequence numbers of the pulse triggering moment and of at least one adjacent pulse triggering moment before the pulse triggering moment.

16. The machine vibration data acquisition method of claim 14, wherein said acquisition end command contains the number of pulse triggering moments that have been broadcasted since the acquisition start command.

17. The machine vibration data acquisition method of claim 16, further comprising:

according to the number of pulse triggering moments that have been broadcasted, determining whether the number of loss of the reception moments of the rotating speed time scale messages is less than a threshold; and

if that number of loss is less than the threshold,

conducting a linear fitting according to the reception moments of the rotating speed time scale messages that are not lost and the corresponding pulse triggering moments, so as to calculate the reception moments of the rotating speed time scale messages that are lost; and

storing in association the pulse triggering moments, the reception moments of rotating speed time scale messages, the vibration data for order analysis, and the acquisition moments as valid order analysis data, in order for the server that obtains the valid order analysis data to conduct equal angle resampling operations when performing diagnostic analysis.

18. The machine vibration data acquisition method of claim 17, further comprising:

if said number of loss is greater than said threshold, storing the pulse triggering moments, the reception moments of rotating speed time scale messages, the vibration data for order analysis, and the acquisition moments as invalid order analysis data.

19. The machine vibration data acquisition method of claim 14, further comprising:

if said acquisition end command is not received within a predetermined length of time, instructing the vibration sensor to stop acquisition operations; and

storing the pulse triggering moments, the reception moments of rotating speed time scale messages, the vibration data for order analysis, and the acquisition moments as invalid order analysis data.

20. The machine vibration data acquisition method of claim 17, further comprising:

sending the valid order analysis data to an acquisition station.