Abstract: A measuring device, having: a housing; a distance measuring unit situated in the housing uses an optical measuring beam, with the aid of which the distance between a reference point and at least one measuring point on a target object is measurable without contact; a photoelectric image acquisition unit situated in the housing having a viewfinder and camera lens situated in the housing as well as an image path connecting them for detecting target points of the target object, an image processing unit and a control and computation unit with the aid of which the image of the image processing unit is displayable. The image processing unit defines target points pixels in exactly one single photoelectric image, the control and computation unit allocating the distance of the reference point to the measuring point to at least one of the pixels, the allocation available for further processing.

Abstract: An electro-optic laser distance meter (1, 1?) has a hand-held housing (2), an electric radiation source (3) for generating a bundled light beam (4), and receiving optics (5) with a photoreceiver (7) for receiving parts of the light beam (4) that is backscattered in a reception beam bundle (9) from a measurement object (8), with the photoreceiver (7) being arranged along the reception axis (E) in the focal point (6), extending in a plane transverse to the reception axis (E), and being partially shadowed inside the reception beam bundle (9) by a polarization filter (10, 10?, 10?, 10??).

Abstract: A hand-held laser distance measuring device (1) with pulse reflection mixing includes a control device (2) for calculating the distance (D) to a measurement object (3) over at least one determinable periodic, with a pulse repetition frequency (f), time difference (?) between a measurement pulse (4) reflected at the measurement object (3) and a reference pulse (6) of an optically emitted transmitting pulse (7) traveling over a reference distance (5) within the device, a local oscillator (8) for generating the transmitting pulse (7) at the pulse repetition frequency (f), at least one delay circuit (9a, 9b) which can be controlled by the control device (2), is arranged between the local oscillator (8) and a light detector (10) and/or a light transmitter (12), and generates a delay between the scanning pulses (11) and the transmitting pulses (7) in order to scan the measurement pulse (4) and the reference pulse (6).

Abstract: A laser instrument for electro-optical measurement of the distance of a target object to a reference mark is disclosed. The instrument includes a housing, where the housing has an outlet opening to couple out a laser beam from the laser instrument, a measuring device which emits a laser beam and determines a distance value from the receiving beam coming from the target object, a display device to display the distance value, an operating device to operate the laser instrument and to start the distance measurement, and an optical sighting device to align the laser beam on the target object. The direction in which a user looks into the optical sighting device is aligned parallel to the optical axis of the laser beam coupled out of the laser instrument via the outlet opening.

Abstract: A laser instrument for electro-optical measurement of the distance of a target object to a reference mark is disclosed. The instrument includes a housing, a measuring device which emits a laser beam and determines a distance value from the receiving beam coming from the target object, an outlet opening to couple out the laser beam from the housing, a display device to display the distance value and an operating device to operate the laser instrument and to start a distance measurement. The display and operating devices are arranged on an upper side of the housing. The outlet opening is arranged in the upper side, in the lower side opposite from the upper side or in a side surface of the housing.

Abstract: A coil arrangement for a magnetic sensor for detecting metallic objects in a subgrade, in particular structures made of concrete, brick, and wood, as well as a method for energizing and reading out this coil arrangement, is disclosed. The coil arrangement includes one or preferably two stacked outer main coils via which a perpendicular magnetomotive force of the subgrade is effected. Provided within the outer main coil(s) is, on the one hand, a quartet of a total of two pairs of parallel coils lying symmetrical to the axis of the main coil(s), via which a magnetomotive force penetration of the subgrade in two directions parallel to the subgrade surface is possible. To further improve the accuracy and reliability of localizing objects and estimating depth of cover, two pairs of smaller orthogonal coils each opposite from one another and also arranged symmetrically to the axis of the main coil(s) are provided.

Abstract: A method for the detection of objects embedded in building structure subgrades such as cable, concrete reinforcing bars, conduit pipe and the like as well as a hand-operated sensor with an adaptive detection threshold operating according to the method, is disclosed. To reduce an over-detection with the adaptation of the detection threshold, a change in the direction of movement of the sensor being guided over the surface area is recorded with respect to an embedded object. The determination of a change in the direction of movement preferably takes place by measuring the sensor acceleration in two directions with respect to the embedded object. Corresponding speeds are computed at least as estimates from the acceleration values in order to generate a conclusion about a reversal of the direction of movement.

Abstract: A hand-held pulse laser distance measuring device and a pulse reflection mixing method both having an algorithm which controls a microcontroller and which serves to calculate the distance to a measurement object by at least two different time differences ?11, ?12 between a measurement pulse and a reference pulse with a pulse width ?t, which time differences ?11, ?12 are measured with a pulse repetition frequency f1, f2, respectively, wherein a selection module is provided which selects at least the first pulse repetition frequency f1 from at least a first frequency set {f}1 with at least one other pulse repetition frequency f1i in such a way that the condition |?11·f1i|>A >2·|?t11·f1i| is satisfied with a pre-selected lower limit A, a relative time difference |?1i·f1i| and a relative pulse width |?t?·f1i|.

Abstract: An electro-optic laser distance meter (1, 1?) has a hand-held housing (2), an electric radiation source (3) for generating a bundled light beam (4), and receiving optics (5) with a photoreceiver (7) for receiving parts of the light beam (4) that is backscattered in a reception beam bundle (9) from a measurement object (8), with the photoreceiver (7) being arranged along the reception axis (E) in the focal point (6), extending in a plane transverse to the reception axis (E), and being partially shadowed inside the reception beam bundle (9) by a polarization filter (10, 10?, 10?, 10??).

Abstract: A hand-held pulse laser distance measuring device (1) with an algorithm (3) which controls a microcontroller (2) and which serves to calculate the distance (X) to a measurement object (4) by a time difference (?) between a measurement pulse (6) and a reference pulse (7) and with a superimposition module (5) which calculates the time difference (?) of a plurality of repeated pulse trains which are periodically superimposed with a trigger frequency fTRIGGER, wherein the trigger frequency fTRIGGER lies in the frequency range of 0.7 · 2 2 · m - 1 · f INT < f TRIGGER < 1.3 · 2 2 · m - 1 · f INT , where ? ? m = 1 , 2 , 3 , … at an interference frequency fINT=100 Hz . . . 120 Hz; and a measuring method for the pulse laser distance measuring device.

Abstract: A detector (1) for detecting embedded elongate objects (5) has an evaluating unit (6), a computing device (7), an output device (8), and a handheld measuring head (9) which can be moved over a surface (F) and which has a path a detector (10) and a transmitting-receiving unit (11a) with an antenna (12a). At least two antennae (12a, 12b) are spaced apart from one another along the surface (F), and the distance (A) therebetween, measured over the surface (F), ranges between 5 cm and 50 cm.

Abstract: A hand-held laser distance measuring device (1) with pulse reflection mixing includes a control device (2) for calculating the distance (D) to a measurement object (3) over at least one determinable periodic, with a pulse repetition frequency (f), time difference (?) between a measurement pulse (4) reflected at the measurement object (3) and a reference pulse (6) of an optically emitted transmitting pulse (7) traveling over a reference distance (5) within the device, a local oscillator (8) for generating the transmitting pulse (7) at the pulse repetition frequency (f), at least one delay circuit (9a, 9b) which can be controlled by the control device (2), is arranged between the local oscillator (8) and a light detector (10) and/or a light transmitter (12), and generates a delay between the scanning pulses (11) and the transmitting pulses (7) in order to scan the measurement pulse (4) and the reference pulse (6).

Abstract: An electro-optical hand-held distance measuring instrument (1) with a housing (2) which can be held in the hand and with an electro-optical distance measurement module (3) with an electric beam source (5) for generating an optical measurement beam (S), a beam receiver (8) for receiving portions of the measurement beam (S) that are backscattered by an object to be measured (MO), and an output device (7) for the determined distance (X). A mechanical distance measuring device (9, 11) is connected to the housing (2).

Abstract: A hand-held pulse laser distance measuring device and a pulse reflection mixing method both having an algorithm which controls a microcontroller and which serves to calculate the distance to a measurement object by at least two different time differences ?11, ?12 between a measurement pulse and a reference pulse with a pulse width ?t, which time differences ?11, ?12 are measured with a pulse repetition frequency f1, f2, respectively, wherein a selection module is provided which selects at least the first pulse repetition frequency f1 from at least a first frequency set {f}1 with at least one other pulse repetition frequency f1i in such a way that the condition |?11·f1i|>A >2·|?t11·f1i| is satisfied with a pre-selected lower limit A, a relative time difference |?1i·f1i| and a relative pulse width |?t?·f1i|.

Abstract: A handheld laser distance measuring device (1) and extreme value measurement process, including, in a first step, an input means (2) is actuated that triggers a measurement sequence, during which, in a second step, individual distance measurements are made triggered by the handheld laser distance device (1) and, in a third step, at least one minimum value (4) or one maximum value (5) relative to the measurement sequence is determined by the handheld laser distance measuring device using the individual measurements. An extreme value difference (6) relative to the measurement sequence is computed by the handheld laser distance measuring device (1) using at least one minimum value (5) and at least one maximum value (4).

Abstract: A detector (1) for detecting embedded elongate objects (5) has an evaluating unit (6) with computing means (7) and an output device (8), and a handheld measuring head (9) which can be moved over a surface (F) and which has a path a detector (10) and a transmitting-receiving unit (11a) with an antenna (12a). At least two antennae (12a, 12b) are spaced apart from one another along the surface (F), and the distance (A) therebetween, measured over the surface (F), ranges between 5 cm and 50 cm.

Abstract: A hand-held pulse laser distance measuring device (1) with an algorithm (3) which controls a microcontroller (2) and which serves to calculate the distance (X) to a measurement object (4) by a time difference (?) between a measurement pulse (6) and a reference pulse (7) and with a superimposition module (5) which calculates the time difference (?) of a plurality of repeated pulse trains which are periodically superimposed with a trigger frequency fTRIGGER, wherein the trigger frequency fTRIGGER lies in the frequency range of 0.7 · 2 2 · m - 1 · f INT < f TRIGGER < 1.3 · 2 2 · M - 1 · f INT , where ? ? ? m = 1 , 2 , 3 , … at an interference frequency fINT=100 Hz . . . 120 Hz; and a measuring method for the pulse laser distance measuring device.

Abstract: A hand-held pulse laser distance measuring device (1) and a pulse reflection mixing method both having an algorithm (3) which controls a microcontroller (2) and which serves to calculate the distance (X) to a measurement object (4) by at least two different time differences (?1,?2) between a measurement pulse (6) and a reference pulse (7) with a pulse width (?t), which time differences (?1, ?2) are measured with a pulse repetition frequency (f1, f2), respectively, wherein a selection module (5) is provided which selects at least the first pulse repetition frequency (f1) from at least a first frequency amount ({f}1) with at least one other pulse repetition frequency (f1i) in such a way that the amount of the relative time difference |?·f1| between the reference pulse (7) and the measurement pulse (6) with respect to the period (1/f1) is greater than a lower limit (A) which is at least greater than twice the relative pulse width |?t f1| with respect to the period (1/f1).

Abstract: A laser distance measuring device (1) includes a laser diode (4) for emitting a high frequency intensity modulated measurement light beam (3) and connected with a signal generating unit (SGU) that generates a high frequency measurement signal (9) for high frequency signal transfer, at least one receiver photodetector (8a) for receiving a measurement light beam (3) reflected from a measurement object (5) and connected to a high frequency demodulator (13) for generating a low frequency phase delay signal (S1) containing phase information of the reflected intensity modulated measurement light beam (3), and a microcontroller (?C) for calculating a distance (D) from the phase delay signal (S1) and connected to the high frequency demodulator (13), with the microcontroller (?C) being connected to a control photodetector (8c) arranged in the measurement light beam (3) for low frequency transfer for determining an interference modulation component.

Abstract: A local oscillator for use in an optoelectronic distance measurement system for generating a narrow-band HF signal for direct signal mixing with a reception signal generated by an avalanche photodiode (2) from a light signal impinging on the latter, with the depletion layer capacitance (CAPD) of the avalanche photodiode (2), which varies due to different influences and specimen scatter, is incorporated, as an element which (co-)determines the oscillator frequency, in a controllable HF resonant circuit whose HF resonant frequency is determined, for example, by the adjustable divider ratio of a PLL-circuit (1) which is acted upon by a phase-locked reference oscillator (6) and which controls the capacitance (C) of a capacitance diode (3) connected in parallel with the depletion layer capacitance.