Closing device, housing part of a lubricant container, diagnostic system and diagnostic method for monitoring the operating state of a lubricant in the housing part

Patent metadata

Field	Value
Publication number	US-9182079-B2
Application number	US-201013263341-A
Country	US
Kind code	B2
Filing date	Apr 7, 2010
Priority date	Apr 7, 2009
Publication date	Nov 10, 2015
Grant date	Nov 10, 2015

Abstract

The invention relates to a housing part containing a lubricant reservoir and at least one respective inlet and outlet opening for filling and draining a lubricating fluid into and from the lubricant reservoir. The inlet and outlet openings are sealed by releasable closure devices each comprising a sensor means for determining the operation parameters in a lubricant contained in the lubricant reservoir and for generating and/or storing sensor signals, as well as a transceiver for the transmission of the sensor signals to an external processing unit.

First claim

The invention claimed is:

1. A closure device for sealing an opening of a housing part from a lubricant, which comprises an internal space having arranged therein:
at least one sensor device comprising a sensor for generating sensor signals corresponding to the operational condition of the lubricant, and
at least one transceiver for receiving the sensor signals from the sensor device and for signal transmission of the sensor signals to an external reception unit,
a power supply device for supplying electric power to the sensor device and to the transceiver,
wherein the surface of one end portion is realized as a sensor surface for the detection of the sensor values; and
wherein the sensor device comprises a planar capacitor which is constituted by two capacitor parts facing each other.

2. The closure device according to claim 1 , wherein the closure device is realized as a screw configured to be inserted in a threaded reception of an inlet opening or outlet opening.

3. The closure device according to claim 1 , wherein the closure device is realized as a bolt comprising a securing element configured to close the respective inlet opening or outlet opening by means of the bolt.

4. The closure device according to claim 1 , wherein the transceiver is adapted to establish a wireless transmission connection that transmits the sensor signals to an external reception unit and is coupled to an antenna which is disposed on a surface of a second end portion situated opposite from the first end portion.

5. The closure device according to claim 1 , wherein the sensor device comprises a humidity sensor configured to detect the water content of the lubricant and/or a temperature sensor configured to detect the temperature of the lubricant and/or a pressure sensor configured to detect the pressure of the lubricant.

6. The closure device according to claim 1 , wherein the sensor device includes a measurement function wherein at least one temporal specification for the performance of a measurement and a function of performing the measurement are set up, which measurement function activates the sensor when the temporal specification is satisfied and detects sensor signals for the determination of sensor values.

7. The closure device according to claim 1 , wherein the sensor device comprises a plate capacitor having two capacitor plates, and wherein the sensor surface of the first end portion that faces the interior of the housing part when the closure device is in the closing state and that is intended for entering into contact with the lubricant is partly configured as a groove, with two mutually facing surfaces of the side walls of the groove each forming an outer side of a respective one of the capacitor plates.

8. The closure device according to claim 7 , wherein the groove is an annular groove.

9. A diagnostic system comprising a housing part of a lubricant container and a separate maintenance device,
wherein the housing part comprises at least one opening and a closure device adapted to be inserted therein and being configured to seal an opening of the housing part from a lubricant, which comprises an internal space having arranged therein:
at least one sensor device comprising a sensor configured to generate sensor signals corresponding to the operational condition of the lubricant, and
at least one transceiver configured to receive the sensor signals from the sensor device and to transmit the sensor signals to an external reception unit,
a power supply device configured to supply electric power to the sensor device and to the transceiver,
wherein the surface of one end portion is realized as a sensor surface configured for the detection of the sensor values,

wherein the at least one sensor device is adapted to generate sensor signals corresponding to the operational condition of the lubricant contained in the housing part and comprises a planar capacitor which is constituted by two capacitor parts facing each other,
wherein the housing part and the closure device are configured such that in the state of the closure device in which it closes the housing part, a surface of a first end portion of the closure device faces the interior of the housing part so as to be in contact with the lubricant, wherein the surface is realized as a sensor surface configured for the detection of the sensor values,
wherein the separate maintenance device comprises a transceiver configured to receive sensor signals from the transceiver associated to the sensor device, wherein the maintenance device includes a processing function module configured to determine, on the basis of the sensor signal, a value for the operational condition of a lubricant present in the housing part.

10. The diagnostic system according to claim 9 , wherein
the sensor device includes a measurement function wherein at least one timer for generating a temporal specification for the performance of a measurement and a function for performing the measurement is set up, wherein the timer is functionally communicated with the sensor such that the timer sends an activation signal to the sensor when the temporal specification is satisfied, wherein the sensor device is configured such that the sensor, in response to the activation signal, detects sensor signals for determining the operational condition of the lubricant, determines from these a sensor value corresponding to the operational condition of the lubricant, and stores it in a memory device of the sensor device,
the maintenance device comprises an input device for retrieving a sensor value which, in response to an actuation of the input device, drives the transceiver associated to the sensor device and activates it to send the stored sensor signal to the maintenance device, and receives it.

11. The diagnostic system according to claim 10 , wherein the sensor device is configured such that, in response to reception of a control command from the transceiver associated to the sensor device, it detects a sensor signal corresponding to an operational condition of the lubricant and sends it to the maintenance device.

12. The diagnostic system according to claim 9 , wherein the sensor device comprises: a processing function configured to determine a value for the operational condition of a lubricant present in the housing part on the basis of the detected sensor signal, and a diagnosis function configured to communicate with the processing function for determining maintenance information from the respective determined value for the operational condition of a lubricant present in the housing part.

13. The diagnostic system according to claim 9 , wherein the maintenance device includes a comparison function configured to communicate with the sensor device for supplying sensor signals, which is realized in such a way that the comparison function compares the respective detected measurement signal to at least one limit value and identifies, based on this comparison, whether the respective detected signal value is situated in a first range below this limit value or in a second range above this limit value, and wherein the maintenance device includes a display function which carries out, based on the identification of a range for the respective detected signal value, marking of at least one field or of one of two fields each allocated to one of the ranges, in a display format of a display device.

14. The diagnostic system according to claim 9 , wherein the maintenance device includes a comparison function configured to communicate with the sensor device for supplying sensor signals, which is realized in such a way that the comparison function compares the res

Assignees

• Dorr Bjoern
• Nuscheler Franz
• Paul Sumit
• Airbus Operations Gmbh

Inventors

• Dorr Bjoern
• Nuscheler Franz
• Paul Sumit

Classifications

• F16N29/00 Primary

  Special means in lubricating arrangements or systems providing for the indication or detection of undesired conditions; Use of devices responsive to conditions in lubricating arrangements or systems · CPC title

• G07C3/08

  Registering or indicating the production of the machine either with or without registering working or idle time · CPC title

• F16N2270/56

  Temperature · CPC title

• F16N2250/08

  Temperature · CPC title

• F16N2260/18

  necessity of changing oil · CPC title