Inspection system

Patent metadata

Field	Value
Publication number	US-11616939-B2
Application number	US-202017035928-A
Country	US
Kind code	B2
Filing date	Sep 29, 2020
Priority date	Oct 10, 2019
Publication date	Mar 28, 2023
Grant date	Mar 28, 2023

Abstract

An inspection system for mounting on a user's hand. The inspection system comprising: an imaging unit comprising two sub-units, the first sub-unit being configured to provide images from a first point of view and the second sub-unit being configured to provide images from a second point of view; and a measuring unit configured to provide data relating to a physical property measured at a measurement location on the user's hand. The imaging unit has a separation sensor configured to measure the separation between the two sub-units of the imaging unit. A method of inspecting and/or servicing a machine is also disclosed.

First claim

We claim:

1. An inspection system for mounting on a user's hand, the inspection system comprising:
an imaging unit comprising two sub-units, the first sub-unit being configured to provide images from a first point of view and the second sub-unit being configured to provide images from a second point of view; and
a measuring unit configured to provide data relating to a physical property measured at a measurement location on the user's hand;
wherein the imaging unit has a separation sensor configured to measure the separation between the two sub-units of the imaging unit;
wherein the separation sensor comprises two contact pads, each of the contact pads having a contact surface which is substantially fixedly positioned at a respective known displacement relative to a respective sub-unit of the imaging unit; and
wherein, when the two contact surfaces are brought into contact with each other, the separation between the two sub-units of the imaging unit is determined by the sum of the known displacements between the contact surfaces and the respective sub-units of the imaging unit.

2. The inspection system of claim 1 , wherein the imaging unit is configured such that the optical axes of the sub-units of the imaging unit are substantially parallel.

3. The inspection system of claim 1 , wherein the contact pads of the separation sensor are magnetically attracted to each other.

4. The inspection system of claim 1 , wherein the separation sensor is configured to sense whether the two contact surfaces are in contact.

5. The inspection system of claim 4 , wherein the imaging unit is configured to:
when the separation sensor senses that the two contact surfaces are in contact, output a stereographic image based on the images provided by the imaging unit; and/or
when the separation sensor senses that the two contact surfaces are not in contact, combine an image provided by one sub-unit of the imaging unit with that provided by the other sub-unit of the imaging unit to produce a combined image with an enlarged field of view.

6. The inspection system of claim 1 ,
wherein the separation sensor comprises a camera substantially fixedly positioned at a known displacement relative to one of the sub-units of the imaging unit, and a fiducial marker substantially fixedly positioned at another known displacement relative to the other of the sub-units; and
wherein, when the fiducial marker is within the field of view of the camera of the separation sensor, the separation sensor is configured to compute the separation between the two sub-units of the imaging unit based on an image of the fiducial marker captured by the camera.

7. The inspection system of claim 1 ,
wherein the separation sensor comprises two inertial measurement units, each inertial measurement unit being substantially fixedly positioned relative to a respective sub-unit of the imaging unit; and
wherein the separation sensor is configured to compute the separation between the two sub-units of the imaging unit based on the output of the two inertial measurement units.

8. The inspection system of claim 1 , wherein the imaging unit is configured to:
when the separation between the two sub-units of the imaging unit is less than a predetermined threshold, output a stereographic image based on the images provided by the imaging unit; and/or
when the separation between the two sub-units of the imaging unit is no less than the predetermined threshold, combine the images provided by one sub-unit of the imaging unit with those provided by the other sub-unit of the imaging unit to produce a combined image with an enlarged field of view.

9. The inspection system of claim 1 , wherein the imaging unit comprises more than two sub-units configured to provide images from different points of view, and the separation sensor is configured to measure more than one separation amongst the sub-units of the imaging unit.

10. The inspection system of claim 1 , configured to compute, based on the images provided by the two sub-units of the imaging unit, a dimension of an object or between objects captured in the images.

11. The inspection system of claim 1 , configured to compute, based on the images provided by the two sub-units, a three-dimensional map of the space captured in the images.

12. The inspection system of claim 1 , wherein each sub-unit of the imaging unit comprises at least one of: a camera, a 360° camera, a wavelength filtered camera, a thermal camera, a zoom camera, a macro camera, a stereo camera, a dichroic camera, and an ultrasound receiver.

13. The inspection system of claim 1 , wherein the measuring unit, comprises at least one of:
a sensor configured to measure a temperature at a measurement location on a user's hand;
a sensor configured to measure a force exerted on a measurement location on a user's hand;
a sensor configured to measure the acceleration of a measurement location on a user's hand;
a sensor configured to measure the position of a measurement location on a user's hand;
a sensor configured to measure ionizing radiation at a measurement location on a user's hand;
a sensor configured to measure at least one of the direction and strength of a magnetic field and/or an electric field at a measurement location on a user's hand;
a sensor configured to measure an eddy current in a material in proximity to a measurement location on a user's hand;
a sensor configured to detect sound waves at a measurement location on a user's hand;
a sensor configured to measure the separation between two measurement locations on a user's hand; and
a sensor configured to measure at least one of the voltage, electric current and the electrical resistance between two measurement locations on a user's hand.

14. The inspection system of claim 1 , wherein the measuring unit includes a sensor configured to provide a measurement between two measurement locations, each of the two measurement locations being located on a digit of the user's hand, a tip of a digit of the user's hand, on the phalanges of a digit of a user's hand, on the palm of the user's hand or on the back of the user's hand.

15. The inspection system of claim 1 , further comprising:
a fluid dispensing unit configured to supply a fluid from at least one dispensing location located on the user's hand;
a fluid absorbing unit configured to absorb fluid at a location on at least one of a digit of the user's hand, a tip of a digit of the user's hand, on the phalanges of a digit of a user's hand, the palm of the user's hand and the back of the user's hand; and/or
at least one illuminator configured to emit at least one of visible light, infrared and ultraviolet radiation.

16. The inspection system of claim 1 , further comprising a controller, configured to receive data from at least one of the imaging unit and the measuring unit and to output corresponding information to a user interface.

17. The inspection system of claim 16 , wherein the user interface comprises a display configured to display an image based on data from the imaging unit, the display being optionally stereographic, mountable on a user's head, an augmented reality display, and/or configured to display dimensional information on the display.

18. The inspection system of claim 1 , wherein the inspection system is configured for use within a machine.

19. A method of inspecting and/or servicing a machine, the method comprising the steps of:
mounting an inspection system of claim 1 on a user's hand; and
inserting the user's hand into the machine to inspect and/or

Assignees

• Rolls Royce Plc

Inventors

• Axinte Dragos A
• Dong Xin
• Alatorre Troncoso David
• Sun Erhui
• Kell James

Classifications

• G01B11/245

  using a plurality of fixed, simultaneously operating transducers ({G01B11/2408 - G01B11/2425, } G01B11/255 take precedence) · CPC title

• G01M15/14 Primary

  Testing gas-turbine engines or jet-propulsion engines · CPC title

• G06T2207/30204

  Marker · CPC title

• G06F3/014

  Hand-worn input/output arrangements, e.g. data gloves · CPC title

• G06T2207/30164

  Workpiece; Machine component · CPC title