A device for producing a triangular laser sheet. The device has an optical transmitter with a pair of plano-convex cylindrical lenses for circularizing infrared laser light and a plano-concave cylindrical lens for shaping the circularized light to produce a triangular laser sheet. A tilt sensor measures departure of the triangular laser sheet from a horizontal reference. The device projects a triangular sheet of infrared light that is useful for detecting over-height vehicles that are approaching a structure, such as a bridge.

An autonomous vehicle having a lidar sensor system is described. A computing system is configured to determine that the lidar sensor system is to update a code that is included in light signals emitted by the lidar sensor system. The computing system transmits a command signal to the lidar sensor system, wherein the command signal causes the lidar sensor system to transition from emitting light signals with a first code therein to emitting light signals with a second code therein, wherein the first code is different from the second code.

An object detection apparatus measures a distance to a detected object at each irradiation angle, based on reflected waves of electromagnetic waves irradiated from a laser light irradiating unit at each irradiation angle. The apparatus determines whether the measured distance remains unchanged for prescribed period of time, for each irradiation angle, and stores the determined distance in a storage unit as a stationary object distance in association with the irradiation angle. The apparatus compares the current measured distance and the stored distances, and determines whether a stationary object distance matching the current distance is present among the stored distances. The apparatus initially compares the shortest stationary object distance among the stored distances with the current distance, and upon determining that a stationary object distance matching the current distance is present, stops the comparison of the current distance and the stored distances that have not been compared with the current distance.

Provided is a scanning device including a transmission module configured to divide a scan target into a plurality of scan areas and alternately irradiate a first laser light and a second laser light to the scan areas that are sequentially arranged, a reception module configured to receive laser lights reflected from each of the scan areas, and an image generation module configured to generate divided images of each of the scan areas by using the reflected laser lights and generate a whole image of the scan target based on the divided images and an edge component of the reflected laser lights, wherein the transmission module is configured to trigger a rising edge of a trigger signal to generate the first laser light and trigger a falling edge of the trigger signal to generate the second laser light.

Motorcycles in a group action share group information to which each of motorcycles belongs and the motorcycles share information with a surrounding four-wheeled vehicle via a vehicle-to-vehicle communication. The information to be shared is the group information. Information from the motorcycle to the four-wheeled vehicle is transmitted when the four-wheeled vehicle is detected by an imaging unit included in the motorcycle or transmitted when a detection unit irradiated from the four-wheeled vehicle is detected.

A LiDAR system and a method for operation thereof are provided. The LiDAR system comprises: a frequency-modulated continuous wave (FMCW) light source configured to produce an FMCW signal; and an amplitude modulator configured to modulate an amplitude of at least a portion of the FMCW signal, thereby producing an Amplitude-Frequency-Modulated-Continuous-Wave (AFMCW) signal; a splitter configured to split one of the FMCW signal and the AFMCW signal into a first portion and a second portion, the first portion being an output signal for reflecting off the object, thereby producing a reflected signal, and the second portion being a reference signal for amplifying the reflected signal; and a detector configured to amplify the reflected signal based on the reference signal as a function of a distance from the LiDAR system to an object, thereby generating an amplified reflected signal for determining the distance to the object.

A measurement apparatus includes a light reception section including a light reception element group including light reception elements in a target region, a controller that controls a first light reception element group and a second light reception element group in the light reception element group, so as to read out the first light reception element group and the second light reception element group during periods different from each other, and a signal processing section that performs signal processing on the basis of a signal read out from at least one of the first light reception element group and the second light reception element group. A sum set of the first light reception element group and the second light reception element group includes the light reception elements, and at least part of the first light reception element group is not included in the second light reception element group.

An autonomous vehicle having a lidar sensor system is described. A computing system is configured to determine that the lidar sensor system is to update a code that is included in light signals emitted by the lidar sensor system. The computing system transmits a command signal to the lidar sensor system, wherein the command signal causes the lidar sensor system to transition from emitting light signals with a first code therein to emitting light signals with a second code therein, wherein the first code is different from the second code.

A reference pose graph can be generated from first point cloud data collected at each of a plurality of mobile nodes. A location of a stationary node can be specified based on the reference pose graph and second point cloud data collected by the stationary node.

The present invention is a device for detecting water on the road that allows to automatically adapt the speed limits on roads according to the traffic conditions, and to transmit the information to a receiver.

The device according to the invention is based on the use of a ray of light transformed by refraction and absorption phenomena for detecting water on the road, by using the passage of vehicles as an indicator of the state of the road by that the wheels will cause in the back of their passage splashes or columns of water when the road is wet, these splashes causing, especially by refraction or absorption effect, a change in the quality of a ray of light when it passes through them before it reaches a receiver.

The receiver can display the information on a vehicle dashboard or on variable display signaling panels, or even transmit it to one or more automatic radar traps.