MONITORING SYSTEM FOR AN ASSEMBLY THAT IS SUBJECT TO VIBRATIONS

• US 20110167915A1
• Filed: 06/17/2009
• Published: 07/14/2011
• Est. Priority Date: 06/20/2008
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies GmbH & Co. KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Kuehl, Andreas, Langer, Goetz
• Granted Patent: US 8,826,741 B2
• Time in Patent Office: Days
• US Class Current: 73/649
• CPC Class Codes: G01D 3/021 using purely analogue techniques
• CPC Class Codes: G01D 5/20 by varying inductance, e.g. by a movable armature

Abstract

A monitoring system for an assembly that is subject to vibrations. The system has a first unit for monitoring vibrations. The monitoring system permits the connection of a sensor unit that detects one or more measured values. A measured value converter with inputs for one or more measured values is provided to convert the values into a temporally variable analogue signal, in which at least one frequency portion represents one measured value. Other detected measured values and status parameters can thus be processed in one vibration monitoring unit.

Claims

1-9. -9. (canceled)

10. A monitoring system for an assembly, comprising:

a first device for monitoring frequencies;

at least one sensor device, which detects one or more measured values; and

a measured value converter having inputs for the one or more measured values, the measured value converter being operative to convert the one or more measured values into a combined, time-variable analog signal, in which at least one frequency component represents a measured value.

11. The monitoring system as claimed in claim 10, wherein the measured value converter converts at least two measured values into different periodic signals with different frequencies that have amplitudes which represent the measured values and which are output as an aggregate signal.

15. The monitoring system as claimed in claim 10, wherein the sensor device has a digital signal output for the measured values detected.

16. The monitoring system as claimed in claim 15, wherein the digital signal output is formed by a serial interface.

17. The monitoring system as claimed in claim 10, wherein the sensor device is an oil monitoring device.

18. The monitoring system as claimed in claim 17, wherein the sensor device has sensors for determining a content of at least one type of particle in oil.

19. The monitoring system as claimed in claim 10, wherein the first device is a vibration monitoring device that has at least one threshold monitoring device for monitoring the at least one frequency component.

12. The monitoring system as claimed in claim 12, wherein periodic signals are sinusoidal signals.

13. The monitoring system as claimed in claim 12, further comprising a vibration monitoring device having an analog input, wherein an output of the measured value converter is connected to the analog input of the vibration monitoring device.

14. The monitoring system as claimed in claim 13, wherein the vibration monitoring device has a frequency analysis unit, which divides the signal into different frequency components and outputs a partial signal strength of the frequency components.