Abstract: A device for calibrating a laser level includes a base platform, a target, and an image recognition device. The base platform is configured to support the laser level that is to be mounted on the base platform at a first position. The target is arranged at a second position of the base platform and configured to receive a laser. The image recognition device is configured to obtain images of lasers projected on the target before and after the laser level rotates a first angle, determine, based on an image recognition result of the images, positions of the lasers emitted by the laser level to determine a deviation distance, and determine whether the laser level needs to be calibrated based on the deviation distance. The deviation distance is determined by position data of the first position and the second position, and the first angle.

Abstract: A control device for controlling a temperature of a laser device includes a pulse width modulation (PWM) signal generator, a temperature acquisition circuit, a voltage comparator, and a logic circuit. The a pulse width modulation (PWM) signal generator configured to generate a PWM signal; a temperature acquisition circuit configured to acquire a temperature of the laser device and convert the temperature into a measurement voltage; a voltage comparator configured to compare the acquired measurement voltage associated with the temperature of the laser device with a temperature threshold voltage and output a comparison result signal; and a logic circuit configured to generate a drive signal based on the PWM signal and the comparison result signal to drive the laser device.

Abstract: A device for calibrating a laser level includes a base platform, a target, and an image recognition device. The base platform is configured to support the laser level that is to be mounted on the base platform at a first position. The target is arranged at a second position of the base platform and configured to receive a laser. The image recognition device is configured to obtain images of lasers projected on the target before and after the laser level rotates a first angle, determine, based on an image recognition result of the images, positions of the lasers emitted by the laser level to determine a deviation distance, and determine whether the laser level needs to be calibrated based on the deviation distance. The deviation distance is determined by position data of the first position and the second position, and the first angle.

Abstract: An intelligent construction method includes obtaining dimensional data of a construction object from a ranging device and obtaining a construction request of the construction object confirmed by a user. The construction request includes the dimensional data and a construction requirement. The method further includes determining construction information corresponding to the construction request, determining a construction solution of the construction object based on the construction information, and obtaining a construction list of the construction object generated based on the construction solution.

Abstract: The present disclosure relates to a radiation assembly, a waveguide antenna sub-arrays, and a waveguide array antenna. The radiation assembly for the waveguide array antenna comprises: a first radiation layer having a plurality of first radiation windows, each of the plurality of first radiation windows has a metal grid that divides the corresponding first radiation window into two radiation holes; and a second radiation layer having a plurality of second radiation windows, the plurality of second radiation windows has a one-to-one correspondence with the plurality of first radiation windows, and the plurality of second radiation windows of the second radiation layer do not have a metal grid. The thickness of the second radiation layer is greater than the thickness of the first radiation layer, and the first radiation layer and the second radiation layer are manufactured independently of each other.

Abstract: A content sharing method applied to a computing device includes: obtaining real-time image information of a target content for a content sharing event, obtaining user information of a plurality of user devices participating the content sharing event, presenting a virtual content sharing scene that includes the image information of the target content and the interaction information, obtaining authorized supplemental content corresponding to a target user type of the target user device, and presenting at least part of the authorized supplemental content in the content sharing scene. The user information of the plurality of user devices includes a plurality of user types of the plurality of user devices and/or interaction information of the plurality of user devices. The authorized supplemental content corresponding to a first user type is different from the authorized supplemental content corresponding to a second user type different from the first user type.

Abstract: The present disclosure relates to a device for calibrating a laser level, including a base platform configured to support the laser level that is to be mounted at a first position of the base platform, a laser detector arranged at a second position of the base platform and configured to receive a laser, and an optical path extension device arranged at a third position between the laser level and the laser detector and configured to receive the laser emitted by the laser level and project the laser to the laser detector after the laser is adjusted by the optical path extension device. With the optical path extension device, a physical distance between the laser level and the laser detector can be optically extended. Without changing the physical distance between the laser level and the laser detector, the technical effect that the optical path distance between the laser level and the laser detector is enlarged can be simulated.

Abstract: The present disclosure relates to a ranging method and a ranging system, the ranging method includes using a first laser emitting portion of a laser emitting device to emit a vertical laser beam rotating in a vertical plane at a first rotation speed; calculating a time difference between the vertical laser beam passing through a first optical detection component and a second optical detection component by using the first optical detection component and the second optical detection component on a laser receiving device at least partially on the same vertical plane, wherein a distance between the two optical detection components is a first spacing; and calculating a first distance between the laser emitting device and the laser receiving device based on the first rotation speed, the first spacing, and the time difference.

Abstract: The present disclosure discloses a method for using a laser level to track a detector and a laser tracking system. The method is applied to the laser level, which needs to use a fan-sweep mode or a dot-sweep mode. The method includes emitting a laser beam by the laser level to perform circular scanning, during the circular scanning, when the detector detects the laser beam, sending a detection signal to the laser level by the detector, when the laser level receives the detection signal, using the laser beam emitted by the laser level to perform circular scanning in an opposite direction, and when a frequency of the detection signal received by the laser level is greater than a first threshold, determining that the laser level tracks the detector.

Abstract: The present invention relates to a laser positioning apparatus and a laser positioning method, the laser positioning apparatus comprises a laser emitting module configured to generate a first laser; a laser direction adjusting module configured to adjust the first laser to a second laser in a first direction and a third laser in a second direction perpendicular to the first direction; a distance determining module configured to receive the laser reflected or diffused back by the second laser on a surface of a first object to be measured to determine a distance from the laser positioning apparatus to the first object to be measured, and/or receive the laser reflected or diffused back by the third laser on a surface of a second object to be measured to determine a distance from the laser positioning apparatus to the second object to be measured.

Abstract: A method for calibrating a laser level. includes arranging the laser level and a detector on a same horizontal plane to cause the laser level to be at a detected position, setting the laser level to be in a dot-sweep mode or a fan-sweep mode, when the detector detects the first laser beam for calibration emitted by the laser level, generating first position information by the detector, when the laser level rotates to a first rotation angle, rotating a laser projection direction of the laser level relative to the laser level along the opposite direction by a first rotation angle to cause the detector to detect the second laser beam for calibration emitted by the laser level to generate second position information, and determining whether the laser level needs to be calibrated based on the first position information and the second position information.

Abstract: A device for calibrating a laser level includes a base platform, a target, and an image recognition device. The base platform is configured to support the laser level that is to be mounted on the base platform at a first position. The target is arranged at a second position of the base platform and configured to receive a laser. The image recognition device is configured to obtain images of lasers projected on the target before and after the laser level rotates a first angle, determine, based on an image recognition result of the images, positions of the lasers emitted by the laser level to determine a deviation distance, and determine whether the laser level needs to be calibrated based on the deviation distance. The deviation distance is determined by position data of the first position and the second position, and the first angle.

Abstract: A method for space design includes: receiving first information of a physical space by a terminal device, the first information including size measurement information of the physical space; acquiring second information of a target object, the second information including size measurement information of the target object; performing a visual presentation of the first information of the physical space and the second information of the target object on a display interface of the terminal device; calculating construction information of the target object being placed in the physical space by the terminal device based on a layout of the target object on the visual presentation according to the first information of the physical space and the second information of the target object; generating order information corresponding to the target object according to the calculated construction information.

Abstract: A control device for controlling a temperature of a laser device includes a pulse width modulation (PWM) signal generator, a temperature acquisition circuit, a voltage comparator, and a logic circuit. The a pulse width modulation (PWM) signal generator configured to generate a PWM signal; a temperature acquisition circuit configured to acquire a temperature of the laser device and convert the temperature into a measurement voltage; a voltage comparator configured to compare the acquired measurement voltage associated with the temperature of the laser device with a temperature threshold voltage and output a comparison result signal; and a logic circuit configured to generate a drive signal based on the PWM signal and the comparison result signal to drive the laser device.

Abstract: A method of spraying paint using a painting assembly attached to a distance measuring wheel includes: receiving, by a communication device of the painting assembly, a control signal for controlling a driving device of the painting assembly; and based on the control signal, controlling a paint spraying state of a paint can attached to a paint can fixing device.

Abstract: An interaction method implemented by a terminal apparatus includes: obtaining an interface underlayer of a space that has direction information and distance information; establishing a mapping relationship between an external device and an identification corresponding to the external device marked on the interface underlayer, the identification indicating a physical location of the external device; receiving, from the external device, property information of the external device; obtaining an image of a real scene in the space; determining that a target object is depicted in the image of the real scene; determining target presentation information of the target object according to the property information of the external device; and displaying the image of the real scene together with the target presentation information, the target presentation information being added to the image as an augmented reality (AR) mark at an image location corresponding to the target object.

Abstract: A door access control system with a temperature detection function includes an infrared body temperature monitor device configured to detect a body temperature of a monitored object; a body temperature comparison device configured to compare a detected body temperature of the monitored object with a body temperature threshold; and a warning device configured to issue a warning message in response to the detected body temperature of the monitored object being higher than the body temperature threshold.

Abstract: A method for calibrating a laser level. includes arranging the laser level and a detector on a same horizontal plane to cause the laser level to be at a detected position, setting the laser level to be in a dot-sweep mode or a fan-sweep mode, when the detector detects the first laser beam for calibration emitted by the laser level, generating first position information by the detector, when the laser level rotates to a first rotation angle, rotating a laser projection direction of the laser level relative to the laser level along the opposite direction by a first rotation angle to cause the detector to detect the second laser beam for calibration emitted by the laser level to generate second position information, and determining whether the laser level needs to be calibrated based on the first position information and the second position information.

Abstract: The present disclosure discloses a method for using a laser level to track a detector and a laser tracking system. The method is applied to the laser level, which needs to use a fan-sweep mode or a dot-sweep mode. The method includes emitting a laser beam by the laser level to perform circular scanning, during the circular scanning, when the detector detects the laser beam, sending a detection signal to the laser level by the detector, when the laser level receives the detection signal, using the laser beam emitted by the laser level to perform circular scanning in an opposite direction, and when a frequency of the detection signal received by the laser level is greater than a first threshold, determining that the laser level tracks the detector.

Abstract: A painting assembly for a distance measuring wheel includes: a main body; a connecting device disposed on the main body and configured to connect the paining assembly to an arm member of the distance measuring wheel; a paint can fixing device disposed on the main body and configured to fix a paint can installed to the painting assembly; a communication device configured to receive a control signal for controlling a driving device; and the driving device connected to the main body and configured to: in response to the control signal, control a paint spraying state of the paint can.