摘要:
A three-dimensional position-measuring apparatus comprises a body, a rotational optical portion rotatable with respect to the body in a horizontal direction and comprising a reflective plate in which deflection in a vertical direction is controllable, a first data transmitting and receiving portion arranged in the body and comprising a first coil which has a rotational axis of the rotational optical portion as an axis, and a second data transmitting and receiving portion arranged in the rotational optical portion and comprising a second coil that has the same axis as that of the first coil and magnetically couples with the first coil.
摘要:
A three-dimensional position-measuring apparatus comprises a body, a rotational optical portion rotatable with respect to the body in a horizontal direction and comprising a reflective plate in which deflection in a vertical direction is controllable, a first data transmitting and receiving portion arranged in the body and comprising a first coil which has a rotational axis of the rotational optical portion as an axis, and a second data transmitting and receiving portion arranged in the rotational optical portion and comprising a second coil that has the same axis as that of the first coil and magnetically couples with the first coil.
摘要:
A pulse light receiving time measurement apparatus according to the present invention includes a light receiving element receiving reflected pulse light from an object to be measured; a pulse light receiving time measurement circuit measuring a time when pulse light is irradiated to the object and a time when the reflected pulse light from the object is received at the light receiving element; a resonance circuit converting an optical pulse signal of the reflected pulse light from the light receiving element into a damping signal; a multi-stage amplifier group amplifying the damping signal from the resonance circuit; a damping signal processing circuit composed of amplitude comparators and zero-cross comparators, and processing the damping signal from each stage of the multi-stage amplifier group, in which operations of the respective zero-cross comparators are determined according to comparison results of the respective amplitude comparators for the amplifier group.
摘要:
An electric distance meter of the present invention comprises a device (1) to generate a modulation signal for modulating measuring light which is irradiated to an object, a device (4) to periodically generate an intermittent pulse signal for generating intermittent modulated measuring light by intermittently adding the modulation signal to a light emitting element (10), a device (5A) to generate an internal frequency signal (S5) with a frequency different from the modulation signal (S2), a light receiving element (27) for outputting a light receiving signal by receiving the intermittent modulated measuring light, a device (7) to generate an intermittent difference frequency signal (S7) by inputting the light receiving signal (S4) and the signal (S5), an arithmetic logical unit (36) for calculating a distance to the object based on a phase difference between a phase of the signal (S7) output from the device (7) and a phase of the intermittent difference frequency signal obtained through a reference optical path.
摘要:
Disclosed is a rotational laser apparatus capable of setting an obliquity without requiring a high accuracy light receiver or a complex optical system for separating different polarized fluxes. The rotational laser apparatus comprises a plurality of reflected sections provided on a target in a direction transverse to scanning laser beam. The reflected planes is disposed in such a manner that a time series arranging state for pulses of the light receiving signal differs between a case that the scanning laser beam intersects the reflected sections from one side to the other side and a case that the laser beam intersects the reflected sections from the other side to one side, with identical scanning direction of the scanning laser beam, The control part includes a judging circuit for judging an operated direction of the oblique mechanism based on the time series arranging state for pulses of the light receiving signal.
摘要:
An object reflector detecting apparatus for identifying an object reflector by emitting a light from a polarized light source toward the object reflector and then detecting a reflected light from the object reflector characterized in that the light emitted from said polarized light source is a polarized light of which direction of polarization is specially defined, the polarized lights between said reflected light and said emitted light are different in the direction of polarization, and said object reflector detecting apparatus is adaped to detect only a component of the direction of polarization from said object reflector.
摘要:
Laser rotary irradiating system comprising a rotary irradiating system main unit and object reflectors including at least a first object reflector and a second object reflector. The rotary irradiating system main unit comprises a rotating and irradiating an irradiation light beam toward the object reflectors, a detector for detecting a reflection light beam reflected from the object reflectors and entering the rotary irradiating system main unit via the rotating unit, and a reflection light detection circuit for identifying the object reflectors from an output of the detector. The position and range of the scanning of the laser beam are determined based on the results of the detection, whereby each of the reflection surfaces of the object reflectors is divided into at least two portions, an irradiation position is confirmed by the first object reflector while the scanning position is confirmed by the second object reflector, and an irradiation light beam is irradiated for reciprocal scanning.
摘要:
A laser surveying system, comprising a light source for emitting a laser beam, a projection optical system for turning the laser beam from the light source to a parallel luminous flux, a scanning unit for projecting the luminous flux of the projected laser beam for scanning, a scanning direction detecting unit for detecting a scanning direction, a photodetection optical system for receiving a reflected light of the projected laser beam from an object to be measured, a photodetection element for performing photo-electric conversion of the reflected light received via the photodetection optical system, and a distance measuring unit for measuring a distance based on a signal from the photodetection element, wherein the projection optical system has a luminous flux diameter changing means, and a luminous flux diameter of the projected laser beam is enabled to be changed.
摘要:
A pulse light receiving time measurement apparatus according to the present invention includes a light receiving element receiving reflected pulse light from an object to be measured; a pulse light receiving time measurement circuit measuring a time when pulse light is irradiated to the object and a time when the reflected pulse light from the object is received at the light receiving element; a resonance circuit converting an optical pulse signal of the reflected pulse light from the light receiving element into a damping signal; a multi-stage amplifier group amplifying the damping signal from the resonance circuit; a damping signal processing circuit composed of amplitude comparators and zero-cross comparators, and processing the damping signal from each stage of the multi-stage amplifier group, in which operations of the respective zero-cross comparators are determined according to comparison results of the respective amplitude comparators for the amplifier group.
摘要:
The present invention provides a direction finding system capable of positioning directions at two points, and particularly, for shifting a ground central base line and a reference point for tunneling work or the like to an underground tunnel shaft or the like, to position a digging thrust direction. A polarized light radiating device irradiates a body for the direction finding system with a polarized light beam or ray bundle and a direction difference detecting device provided within the body receives therein the polarized light beam emitted from the polarized light radiating device and detects the difference between the direction of the polarized light beam and a predetermined direction. A rotatory polarizing plate of the direction difference detecting device allows the polarized light beam to pass therethrough and a condenser lens gathers the polarized light beam transmitted through the rotatory polarizing plate. A light-receiving portion receives therein the polarized light beam gathered by the condenser lens and an encoder device detects a predetermined position and rotation of the rotatory polarizing plate.