IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0073866
(2005-03-08)
|
등록번호 |
US-7301616
(2007-11-27)
|
우선권정보 |
SE-0400586(2004-03-08) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
10 |
초록
▼
The present invention relates to a method and apparatus for alignment of two mechanical parts. An inventive measuring device has a housing comprising a light source and a detector for detection of light beams. The light source is capable of transmitting a light beam modulated according to a modulati
The present invention relates to a method and apparatus for alignment of two mechanical parts. An inventive measuring device has a housing comprising a light source and a detector for detection of light beams. The light source is capable of transmitting a light beam modulated according to a modulation scheme for information transmission. The output of said detector is connected to an interpreter arranged to demodulate a detected light beam and to a signal conditioner arranged to extract the position of impingement of a detected light beam on the detector surface.
대표청구항
▼
The invention claimed is: 1. A measuring device for object alignment, said measuring device having a housing comprising: a light source structured and arranged to be capable of generating an output light beam that is modulated according to a modulation scheme for information transmission; an incide
The invention claimed is: 1. A measuring device for object alignment, said measuring device having a housing comprising: a light source structured and arranged to be capable of generating an output light beam that is modulated according to a modulation scheme for information transmission; an incident light beam detector; an interpreter connected to the incident light beam detector, the interpreter being structured and arranged to be capable of demodulating an incident light beam as received by the incident light beam detector; and a signal conditioner connected to the incident light beam detector, the signal conditioner being constructed and arranged so as to be capable of extracting a position of impingement of the incident light beam on a surface of the detector; wherein said interpreter and said signal conditioner are arranged to simultaneously demodulate and extract, respectively. 2. The measuring device of claim 1, wherein said light source is a laser transmitter, the output light beam is a laser beam and the light beam detector is a laser detector. 3. The measuring device of claim 2, wherein the measuring device comprises a laser driver; the laser transmitter comprises a laser diode; an input of the laser diode is connected to an output of the laser driver; the laser driver is arranged to feed an anode current to the laser diode; and wherein said laser driver is capable of feeding to the laser diode an anode current modulated according to a modulation scheme for information transmission. 4. The measuring device of claim 1, wherein the output of said incident light beam detector is connected to the interpreter and the signal conditioner in parallel. 5. The measuring device of claim 1, further comprising: a processor having first and second inputs, the first input being connected to an output of said interpreter, the second input being connected to an output of said signal conditioner, and said processor being constructed and arranged to receive a demodulated message from the interpreter and to receive position measurement results from the signal conditioner. 6. The measuring device according claim 1, wherein said light source is arranged to emit the output light beam so as to have a line-shaped cross section and wherein said detector is a line shaped detector. 7. The measuring device of claim 1, wherein said housing comprises a holder suitable for attaching the measuring device to a shaft. 8. The measuring device of claim 1, wherein said measuring device further comprises an inclinometer arranged to indicate an angular position of an object to which the measuring device is attached. 9. A system for alignment of mechanical parts comprising: a first measuring device having a first housing comprising: a first light source structured and arranged to be capable of generating an output light beam that is modulated according to a modulation scheme for information transmission; a first incident light beam detector; a first interpreter connected to the first incident light beam detector, the first interpreter being structured and arranged to be capable of demodulating an incident light beam as received by the first incident light beam detector; and a first signal conditioner connected to the first incident light beam detector, the first signal conditioner being constructed and arranged so as to be capable of extracting a position of impingement of the incident light beam on a surface of the detector; and a second measuring device having a second housing comprising: a second light source structured and arranged to be capable of generating a second output light beam that is modulated according to a modulation scheme for information transmission; a second incident light beam detector; a second interpreter connected to the second incident light beam detector, the second interpreter being structured and arranged to be capable of demodulating an incident light beam as received by the second incident light beam detector; and a second signal conditioner connected to the second incident light beam detector, the second signal conditioner being constructed and arranged so as to be capable of extracting a position of impingement of the incident light beam on a surface of the detector; wherein each of the first and second measuring devices is structured so that the first and second measuring devices can be positioned with respect to one another such that the detector of said first measuring device can detect said output light beam transmitted by the light source of said second measuring device, and such that the detector of said second measuring device can detect said output light beam emitted by the light source of said first measuring device; and wherein the system further comprises: a user interface, said user interface being connected to said first measuring device via a bidirectional communication connection, said user interface comprising a user interface processor connected to a display; and wherein the second measuring device is a slave measuring device being arranged to communicate with said a user interface processor via said first measuring device. 10. The system of claim 9, wherein said user interface processor is constructed and arranged to analyse position measurement results obtained via the detectors of said first and second measurement devices. 11. The system of claim 10, wherein said further processor is further constructed and arranged to perform vibration analysis. 12. The system of claim 9, wherein said bidirectional communication connection is a wireless connection. 13. A system for aligning a first mechanical part and a second mechanical part, said system comprising: a first measuring device attachable to the first part; and a second measuring device attachable to the second part; said first measuring device comprising a connection for communication with a user interface, a first laser transmitter and a first detector, said second measuring device comprising a second laser transmitter and a second detector, the first and second measuring devices being structured so that the first and second measuring devices can be positioned with respect to one another such that said first detector receives a laser beam transmitted by said second laser transmitter and said second detector receives a laser beam transmitted by the first laser transmitter, said first and second detectors being constructed and arranged to, upon detection of a corresponding said laser beam, output first and second detection signals, respectively, and wherein said first laser transmitter is constructed and arranged to be capable of transmitting a laser beam modulated according to a modulation scheme suitable for information transmission; and said second measuring device comprises a demodulator connected to an output of the second detector, said demodulator being arranged to demodulate a second detection signal which is modulated according to said modulation scheme; and wherein said first measuring device is adapted to, when receiving on said connection a message intended for said second measuring device, transmit said message to said second measuring device via said first laser transmitter. 14. The system according to claim 13, wherein, the first laser transmitter is constructed and arranged to be able to perform transmission in at least two different transmission modes, wherein in a first of the transmission modes, the transmitted laser beam is suited for position sensing, and in a second of the transmission modes, the laser beam is modulated according to said modulation scheme for information transmission. 15. The system according to claim 13, wherein the first laser transmitter is constructed and arranged to transmit a laser beam modulated according to a modulation scheme suitable for information transmission and position sensing. 16. The system according to claim 15, wherein said second measuring device further comprises a signal conditioner connected to the output of the second detector and a processor connected to the output of said signal conditioner, said signal conditioner being constructed and arranged to extract a signal responsive to the position of the laser beam on a surface of the second detector, said signal being in a format readable by the processor; and said signal conditioner and said demodulator can operate simultaneously. 17. The system according to claim 13, wherein said first measuring device further comprises a first processor and a first laser driver, said first laser driver being arranged to receive, from the first processor, instructions regarding the transmission of a laser beam, to generate an anode current in response to said instruction and to feed said anode current to a laser diode of the first laser transmitter. 18. An apparatus for static alignment of two shafts, comprising the system of claim 13, wherein: the first mechanical part is a first shaft to which the first measuring device is attached; the second mechanical part is a second shaft to which the second measuring device is attached; and the apparatus further comprises a processor comprising a user interface, the processor being connected via a bidirectional connection to one of the first and second measuring devices, said processor being arranged to receive, via said bidirectional connection, results from measurements performed by the first and second measuring devices. 19. The apparatus of claim 18, wherein said processor is further constructed and arranged to perform vibration analysis. 20. A method for aligning a first mechanical part and a second mechanical part comprising the steps of: providing a first measuring device attachable to the first part, and a second measuring device attachable to the second part, the first measuring device comprising a first light source and a first detector, the second measuring device comprising a second light source and a second detector and a connection for communication to a user interface; emitting, from the first light source, a first light beam modulated to carry information; detecting, in the second detector, the first light beam; generating a first detector output signal responsive to said detecting; demodulating the first detector output signal and retrieving said information; transmitting said retrieved information on said connection for communication to said user interface. 21. The method of claim 20, said method further comprising extracting, from said first detector output signal, a position of impingement of the first light beam on a surface of the second detector. 22. The method of claim 21, wherein said method further comprises receiving, in one of the first and second measuring devices, measurement instructions from a processor; and sending the results of said step of extracting to said processor. 23. The method according to claim 20, wherein said method further comprises emitting, from the first light source, a second light beam, said second light beam being modulated so as to be suitable for position measurement; detecting, in the second detector, impingement of the second light beam on the surface of the second detector; generating a second detector output signal responsive to said detecting of the impingement; and extracting, from the second detector output signal, a position of impingement of said second light beam on the surface of the second detector. 24. The method of claim 20, wherein said first light source is a laser transmitter and said first light beam is a laser beam. 25. The method according to claim 24, wherein said first measuring device further comprises a first processor and a first laser driver, said method further comprising receiving, in the first laser driver from the first processor, an instruction to transmit said information; generating, in said laser driver, an anode current modulated to cause, when fed to the first laser transmitter, a laser diode of the first laser transmitter to emit said first laser beam; and feeding said anode current to said laser diode.
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