A monitoring device for monitoring a boundary section of a safety zone for detecting an object at least partially entering or leaving the safety zone through the boundary section is provided. The monitoring device comprises: a light curtain device for detecting an object touching the boundary section; at least one radar device for detecting a movement direction of the object relative to the boundary section and/or a material property of the object; and an evaluation device for emitting an evaluation result based on a radar device signal from the radar device and optionally based on a light curtain device signal from the light curtain device.

A monitoring device for monitoring a boundary section of a safety zone for detecting an object at least partially entering or leaving the safety zone through the boundary section is provided. The monitoring device comprises: a light curtain device for detecting an object touching the boundary section; at least one radar device for detecting a movement direction of the object relative to the boundary section and/or a material property of the object; and an evaluation device for emitting an evaluation result based on a radar device signal from the radar device and optionally based on a light curtain device signal from the light curtain device.

System and methods for simultaneous characterization of tracer light output and velocity by arranging a plurality of photodetectors along the flight path of the tracer and transmitting the detected light output over large distances using an array of analog/digital converter units arranged to correspond to each photodetector. The system can be scaled and configured to operate and control the photodetectors from a remote location.

Embodiments of the present disclosure provide a method and apparatus for determining a velocity of an obstacle, a device, and a medium. An implementation includes: acquiring a first point cloud data of the obstacle at a first time and a second point cloud data of the obstacle at a second time; registering the first point cloud data and the second point cloud data by moving the first point cloud data or the second point cloud data; and determining a moving velocity of the obstacle based on a distance between two data points in a registered data point pair.

Provided is an object detection device capable of accurately calculating a movement parameter related to the movement of an object. An object detection device (1) includes a feature extraction unit (2) and a calculation unit (4). When an object passes each of a plurality of irradiation areas of irradiation light from a first sensor and a second sensor, which are configured to detect a feature of a part of a surface of an object by applying irradiation light, the feature extraction unit (2) extracts features of the object in the plurality of irradiation areas. The calculation unit (4) calculates a movement parameter of the object between the plurality of irradiation areas when a difference between the features respectively extracted in the plurality of irradiation areas falls below a predetermined first threshold.

Provided is an object detection device capable of accurately calculating a movement parameter related to the movement of an object. An object detection device (1) includes a feature extraction unit (2) and a calculation unit (4). When an object passes each of a plurality of irradiation areas of irradiation light from a first sensor and a second sensor, which are configured to detect a feature of a part of a surface of an object by applying irradiation light, the feature extraction unit (2) extracts features of the object in the plurality of irradiation areas. The calculation unit (4) calculates a movement parameter of the object between the plurality of irradiation areas when a difference between the features respectively extracted in the plurality of irradiation areas falls below a predetermined first threshold.

Disclosed herein is a velocity measuring device to be used in a moving frame to determine the velocity of the moving frame. At least one beam of light is emitted from a site in the moving frame and travels to a mirror disposed in the moving frame and back to the site at which the emission occurred, after which the beam is detected by a light beam detector. By measuring the round trip time of the light beam from emission to detection, a factor gamma can be determined from which the velocity of the moving frame can be computed.

Disclosed herein is a velocity measuring device to be used in a moving frame to determine the velocity of the moving frame. At least one beam of light is emitted from a site in the moving frame and travels to a mirror disposed in the moving frame and back to the site at which the emission occurred, after which the beam is detected by a detector. By measuring the round trip time of the light beam from emission to detection, a factor gamma can be determined from which the velocity of the moving frame can be computed.

The invention relates to a method and a measuring system for measuring a movable object, for example a lateral guide on the transport path of a casting strand in a metallurgical installation. The system has at least one light source (110) for emitting parallel light beams (130) and a receiving device (120) with a sensor field for receiving the light beams. An evaluation device is used to evaluate the light beams received by the sensor field. In order to be able to make the evaluation simpler and faster, the receiving device is designed to generate an image of the sensor field having the positions of the sensors of the sensor field, which are assigned to the light beams not influenced by the object, and having the positions of the sensors of the sensor field, which are assigned to the light beams which are emitted, but are influenced by the object. The distances between the individual sensors are likewise known on the basis of the known resolution of the sensor field. The evaluation device is designed to evaluate the image with regard to the depth of penetration of the object into the spatial area spanned by the light beams, the speed and/or the contour of the object (200).

The invention relates to a method and a measuring system for measuring a movable object, for example a lateral guide on the transport path of a casting strand in a metallurgical installation. The system has at least one light source (110) for emitting parallel light beams (130) and a receiving device (120) with a sensor field for receiving the light beams. An evaluation device is used to evaluate the light beams received by the sensor field. In order to be able to make the evaluation simpler and faster, the receiving device is designed to generate an image of the sensor field having the positions of the sensors of the sensor field, which are assigned to the light beams not influenced by the object, and having the positions of the sensors of the sensor field, which are assigned to the light beams which are emitted, but are influenced by the object. The distances between the individual sensors are likewise known on the basis of the known resolution of the sensor field. The evaluation device is designed to evaluate the image with regard to the depth of penetration of the object into the spatial area spanned by the light beams, the speed and/or the contour of the object (200).