Measuring device and measuring method for determining distance and/or position
A measuring device is provided with a signal generator and a signal receiver, which is located at a measurable distance from the signal generator. The signal generator is designed for the emission of at least two signal beams covering in given relationship to each other an area and the signal receiver is designed for the time-resolved reception of the signal beams in such a manner that the generator-receiver distance can be determined from the time signature of the signal beam reception.
1. A signal processing circuit for a light receiver having at least one photo-sensitive component for repeatedly receiving a moving light beam, said signal processing circuit being adapted for receiving a signal derived from said photo-sensitive component and for determining the reception of said light beam on said photo-sensitive component, wherein said signal processing circuit comprises an analog/digital converter for quantizing a signal derived from said photo-sensitive component in a time and value discrete manner and for providing a stream of digital data related thereto, and said signal processing circuit being adapted to determine details of the beam transit over said photo-sensitive component from the quantized signal, wherein said details of the beam transit comprise a transit time determined from a temporal center of gravity of the beam passage, and wherein said transit time is calculated for beam transits of said moving light beam for beam shapes that are non-symmetric.
2. The signal processing circuit of claim 1 , wherein the details of the beam transit further comprise the exact position of impact of the beam onto a position-sensitive photo-sensitive device in response to the data stream of time discretely and value discretely digitized signals.
3. A measuring system, comprising:
a signal receiver including a signal processing circuit, said signal processing circuit having at least one photo-sensitive component for repeatedly receiving a moving light beam, said signal processing circuit being adapted for receiving a signal derived from said photo-sensitive component and for determining the reception of said light beam on said photo-sensitive component, wherein said signal processing circuit comprises an analog/digital converter for quantizing a signal derived from said photo-sensitive component in a time and value discrete manner and for providing a stream of digital data related thereto, and said signal processing circuit being adapted to determine details of the beam transit over said photo-sensitive component from the quantized signal, wherein said details of the beam transit comprise a transit time determined from a temporal center of gravity of the beam passage, and wherein said transit time is calculated for beam transits of said moving light beam for beam shapes that are non-symmetric; and
a signal generator for emitting at least two signal beams which scan a surface in relation to each other in a defined manner, said signal receiver being adapted to time resolve signal beams reception in order to enable the distance between a transmitter and a receiver to be determined from the time signature of signal beams.
4. The measuring system according to claim 3 , wherein laser light beams are emitted as signal beams.
5. The measuring system according to claim 3 , wherein the signal beams rotate around a common axis.
6. The measuring system according to claim 5 , wherein the signal beams do not intersect at the rotation axis.
7. The measuring system according to claim 3 , wherein the beam axes of the signal beams are stationary to each other in a fixed manner and have a constant angle relation.
8. The measuring system according to claim 3 , wherein at least two of the signal beams are generally parallel to each other.
9. The measuring system according to claim 3 , wherein at least three signal beams are provided.
10. The measuring system according to claim 3 , wherein the signal generator is designed to emit a signal beam fan.
11. The measuring system according to claim 10 , wherein at least two of the signal beam fans are arranged at least generally parallel to each other.
12. The measuring system according to claim 11 , wherein a third signal beam fan is provided in such a manner that it is aligned diagonally to the two signal beams, said two signal beams being located at a measurable distance from each other, substantially parallel to each other, and wherein said third signal beam then is ananged in a plane which is tilted towards the rotation axes however is not normal to the rotation axes.
13. The measuring system according to claim 3 , comprising a means to determine a signal beam zero-angle passage.
14. The measuring system according to claim 13 , wherein the means to determine a signal beam zero-angle passage comprises a time based signal receiver and/or a zero-angle passage signal receiver, in particular adapted for the wireless reception of an identification signal for the zero-angle passage.
15. The measuring system according to claim 13 , wherein the means to determine a signal beam zero-angle passage comprises a means for beam modulation/demodulation.
16. The measuring system according to claim 3 , wherein a means for storing of a multiplicity of successive recorded coordinates is provided.