A system includes: a device capable of surveying a measurement target or emitting laser light; an acceleration sensor capable of detecting an acceleration of the device; an output unit capable of outputting information; a storage unit configured to store: history information on the acceleration; and a correspondence table including a predetermined condition to be detected based on the acceleration and an operation detail in correspondence with each other; and a control unit configured to control output of the output unit based on the operation detail corresponding to the predetermined condition of the device associated in accordance with the history information, if the acceleration detected by the acceleration sensor is determined to correspond to the predetermined condition.

A laser leveling device includes at least one laser emitting device for emitting a laser marking, in particular a one-dimensional laser marking, in an emission direction onto a projection surface. The laser emitting device includes a first sensor device for ascertaining the actual alignment of the at least one laser emitting device with respect to the projection surface, a controller which is designed to calculate a target alignment of the at least one laser emitting device at least on the basis of the ascertained actual alignment of the at least one laser emitting device with respect to the projection surface, and a positioning device for aligning the at least one laser emitting device according to the target alignment. The disclosure additionally relates to a leveling method.

Disclosed herein is a point determination and projection device configured to automatically detect the location of a point of interest, such as a midpoint or other intermediate point on a surface, and to project light or another image onto such point of interest to indicate its location to a user. In accordance with certain aspects of an embodiment of the invention, the device includes remote distance measurement devices, such as laser distance measurement devices, that measure the distance to, for example, corners of a wall surface, and a digital protractor that measures the angle between the two remote distance measurement devices. Based on those measurements, a processor calculates the location of a predesignated point of interest, such as a midpoint or other intermediate point between the two wall corners, and projects a light or other image toward the location of such midpoint or other intermediate point to indicate such location to a user.

Provided is a technology to properly display information onto a projection surface without depending on a distance image sensor, and directly project a wide range of information other than a survey setting point onto a construction site. A system includes: a projector including an inclination sensor and at least one reflector ; a measuring device configured to measure a position of the reflector; a means having surface information; and a means configured for setting a distance difference between a projection surface onto which the surface information is projected and the measuring device in a normal direction, wherein the measuring device measures the reflector, and the surface information adjusted according to the distance difference in the normal direction is projected onto the projection surface.

A total station includes a telescope, an EDM unit, and an onboard computer. The telescope is manually adjusted by a user to cause a target to be set at last partially within an FOV of the EDM unit. After the manual adjustment, an optical aiming point associated with the telescope is misaligned from a center point of the target by an offset angle. A user input indicating that the manual adjustment has been performed is received via a user interface. In response to the user input, a slope distance is measured using the EDM unit and an angle associated with the optical aiming point is measured. The offset angle is computed based on the slope distance, and an angle associated with the center point of the target is computed based on the angle associated with the optical aiming point and the offset angle.

A self-leveling laser transmitter is provided. The laser transmitter comprises a rotation head and an accelerometer mounted on the rotation head. An acceleration signal is received from the accelerometer and one or more tilt adjustment signals for adjusting a tilt of the rotation head to a leveled orientation are generated based on the acceleration signal. One or more actuators adjust the tilt of the rotation head based on the one or more tilt adjustment signals.

A surveying system comprises a laser scanner for scanning a distance measuring light and for acquiring point cloud data and a target instrument having a target for reflecting the distance measuring light, wherein the target is a sphere having a known diameter, the laser scanner comprises a distance measuring module for projecting the distance measuring light, for receiving a reflected distance measuring light and for performing a distance measurement, an optical axis deflector which enables to two-dimensionally deflect the distance measuring light, and an arithmetic control module for controlling the optical axis deflector, and wherein the arithmetic control module is configured to perform a circular scan on a surface of the target by the optical axis deflector, to obtain a center of the target based on the point cloud data acquired by the circular scan and the diameter, and to measure a distance of the center of the target.

A laser level containing a housing, an electronic tilt sensor located in the housing; a controller to which the electronic tilt sensor is connected, and a laser module. The controller is communicable with a first display device and a second display device. The laser line is adapted to project a straight ground laser line on a flat surface. The electronic tilt sensor is adapted to detect a tilt of the laser level and provide a measurement signal to the controller. The controller is adapted to provide a display signal to the first and second display devices to display information about the tilt. By using an electronic tilt sensor, the laser level can provide accurate indicate of the tilt of the device and also allows such tilt information to be processed further.

A surveying instrument include a monopod installed on a reference point and a surveying instrument main body provided on the monopod, wherein the surveying instrument main body includes a measuring direction image pickup module which acquires first image including an object, a distance measuring unit which measures a distance to the object, a measuring direction detecting module which detects a measuring direction, a time detector which generates a reference time signal and an arithmetic control module, the arithmetic control module associates a distance measurement result with the reference time signal, associates a measuring direction with the reference time signal, and associates the first image with the reference time signal, associates an image change, the measuring direction, and a distance measurement result with each other based on the reference time signal, calculates a measuring direction in the distance measurement and determines a position of a measurement part of the object.

A system for determining a length of an object includes a rod, an imaging device couplable to the rod, a laser rangefinder, one or more sensors, and a processor. The processor can receive image data, the orientation of the rod relative to the surface, and the distance to the surface from the imaging device and can determine the length of the rod. A system for surveying trees within a plot includes an imaging device, one or more sensors for measuring at least one of a pitch, a roll, or a compass bearing of the imaging device, and one or more processors configured to receive images of the plot including trees within the plot, associate one or more sensor measurements with the images, store the images with their associated measurements, and generate a survey of trees in the plot using at least the images and the one or more sensor measurements.