Portable coordinate measurement machine with integrated line laser scanner
A portable coordinate measurement machine for measuring the position of an object in a selected volume includes a positionable articulated arm having a plurality of jointed arm segments. The arm includes a measurement probe having an integrated line laser scanner mounted thereon. The laser may be a fiber coupled laser. Wireless data transfer and communication capability for the CMM is also possible.
1. A portable articulated arm coordinate measurement machine (AACMM), comprising:
a manually positionable articulated arm having opposed first and second ends, the arm including a plurality of connected arm segments, each of the arm segments including at least one position transducer for producing a position signal;
a measurement device attached to the first end of the AACMM;
an electronic circuit for receiving the position signals from the transducers and for providing data corresponding to a position of the measurement device; and
multiple laser scanners located at the first end of the AACMM.
2. The portable AACMM of claim 1 , further comprising at least one bus within said articulated arm for transmitting one or more signals to each of the multiple laser scanners, each of the multiple laser scanners including circuitry for communicating with the at least one bus.
3. The portable AACMM of claim 1 , wherein at least one of the multiple laser scanners includes a wireless antenna for communicating data to and from the at least one of the multiple laser scanners.
4. The portable AACMM of claim 1 , wherein the multiple laser scanners are rotatable with respect to the AACMM.
5. The portable AACMM of claim 1 , further comprising a handle extending from the first end of the AACMM.
6. The portable AACMM of claim 1 , wherein the first end of the AACMM includes three degrees of freedom and wherein one of the three degrees of freedom is a rotation axis for rotating each one of the multiple laser scanners.
7. The portable AACMM of claim 1 , wherein the AACMM includes four additional degrees of freedom such that the plurality of connected arm segments have degrees of freedom in a 2-2-3 configuration.
8. The portable AACMM of claim 2 , wherein the at least one bus comprises a serial communications bus, and wherein each of the multiple laser scanners is connected to the bus.
9. The portable AACMM of claim 8 , wherein the serial communications bus comprises an RS-485 type bus.
10. The portable AACMM of claim 1 , further comprising a kinematic mount for detachably mounting each one of the multiple laser scanners to the first end of the AACMM.
11. The portable AACMM of claim 1 , wherein each one of the multiple laser scanners comprises:
a camera;
a laser light source;
a digital interface communicating with the camera;
a processor communicating with the digital interface for processing images from the camera;
a memory communicating with the processor; and
a communications processor communicating with the processor.
12. The portable AACMM of claim 11 , wherein the digital interface comprises a high speed data communications interface for communicating between the camera and the digital interface.
13. The portable AACMM of claim 12 , wherein the high speed data communications interface comprises a Firewire data format.
14. The portable AACMM of claim 2 , wherein the at least one bus transmits both power and data signals.
15. The portable AACMM of claim 1 , further comprising circuitry for transmitting data from the at least one position transducer and from each one of the multiple laser scanners to a host computer.
16. The portable AACMM of claim 1 , wherein each one of the multiple laser scanners includes image processing circuitry that converts image data to dimensional data.
17. The portable AACMM of claim 16 , wherein the dimensional data is transferred using the at least one bus.
18. The portable AACMM of claim 11 , wherein the processor includes image processing circuitry that converts image data to dimensional data.
19. The portable AACMM of claim 11 , wherein each one of the multiple laser scanners includes image processing circuitry that generates processed data, the processed data being in an amount which is smaller than an amount of data associated with original data derived from an image received from the camera.