Patents
Literature
10 results about "Lidar detector" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
A lidar detector or laser detector is a passive device designed to detect the infrared emissions of law enforcement agencies' lidar speed detection devices and warn motorists that their speed is being measured. A limitation of lidar is that it cannot be used while a police car is in motion, because it requires the operator to actively target each vehicle, whereas traditional radar can be operated while the police officer is driving his car. Other restrictions include a precipitation free environment, as the laser can produce erratic readings from airborne moisture or smoke. Popularity of lidar speed detection is on the rise, though, as costs decline, ease of operation approaches radar, and existing radar equipment reaches its end-of-service life and is rotated out of service. Lidar detectors are generally less effective than radar detectors as the emissions they monitor are more brief, more concentrated and less easily scattered than radar; a motorist may therefore not have sufficient time to respond to the burst transmission of a lidar device, or the narrow beam might be focused on a specific part of a vehicle where the sensor cannot "see" it.
A laser ranging method, device, lidar, and storage medium
This application relates to the field of lidar, and discloses a lidar ranging method, device, lidar, and storage medium. The method includes: acquiring a spot pattern on a lidar detector and plotting a time-of-flight histogram; determining the distance type between the object to be measured and the lidar based on the spot pattern; determining the target time-of-flight region in the time-of-flight histogram based on the distance type; determining the target time-of-flight based on the target time-of-flight region; and determining the ranging result based on the target time-of-flight. This application does not require peak location for all regions of the time-of-flight histogram, effectively reducing the amount of peak calculation, improving the efficiency of peak position calculation and fitting accuracy, and eliminating the need to store excessive noise peak data.
Owner:SHENZHEN CAMSENSE TECHNOLOGIES CO LTD
Laser radar detection device and self-moving cleaning robot
This utility model discloses a lidar detection device and a self-propelled cleaning robot. The lidar detection device includes a base, a lidar detector, and a drive module. A first connector is provided on one side of the lidar detector in a first direction. The drive module is arranged side by side with the lidar detector in the first direction and includes a drive unit, a transmission mechanism, and a second connector. The second connector is fixedly connected to the first connector. The drive unit is driven by the transmission mechanism to drive the second connector to move, thereby moving the lidar detector relative to the base in a second direction. In this utility model, through the optimized design of the drive module layout, the overall size of the lidar detection device in the vertical direction is effectively reduced. The lidar detection device has a more compact structure and smaller size in the vertical direction, making it easier for the self-propelled cleaning robot to pass through low areas such as under furniture, thus expanding the cleaning area of the self-propelled cleaning robot.
Owner:麦悦未来智能科技(苏州)有限公司
Optical phased array laser radar system based on beam splitting system and scanning method thereof
ActiveCN121232199AUsing optical meansElectromagnetic wave reradiationRadar systemsImaging processing
The invention relates to the technical field of laser radar scanning, in particular to an optical phased array laser radar system based on a beam splitting system and a scanning method thereof, and the system comprises the beam splitting system and an optical phased array laser radar. The laser radar comprises a laser, an optical phased array, a visible light area array detector, an optical filter, a laser radar detector, an image processing module, a data processing module and a control module. The laser emits laser beams; the optical phased array changes the direction and the shape of a laser beam; the visible light area array detector obtains a two-dimensional grey-scale map; the laser radar detector receives the light beam passing through the filter; the image processing module obtains a point cloud coordinate set; the data processing module generates a control parameter set; the control module is used for controlling the optical phased array laser radar to scan the to-be-scanned area to obtain point cloud data. The method has the advantages that through target identification or edge contour identification, redundant data is reduced, and the complexity of subsequent data processing is reduced.
Owner:JILIN UNIVERSITY
Coated articles demonstrating anti-reflection, contaminant build-up resistance and UV durability
ActiveUS12638615B2Lighting and heating apparatusOptical signallingAnti-reflective coatingGas detector
The present invention is directed to an article comprising an optical cover assembly. The optical cover assembly comprises: (A) a substrate comprising an outer surface and an opposing inner surface; (B) an optional first coating layer applied directly to at least the outer surface of the substrate; (C) an anti-reflective coating stack comprising at least one coating layer; and (D) a topmost coating layer comprising a fluorosilane polymer on the outer surface of the substrate. The optical cover assembly demonstrates hydrophobicity and extended UV durability, and serves as a component of at least one of a vehicle, a light sensor, a LiDAR detector, a motion sensor, a vision camera, a backup camera, a security camera, an IR camera, a headlight, a taillight, a signal light, a RADAR emitter, a RADAR detector, an aircraft landing light, and a gas detector.
Owner:PPG INDUSTRIES OHIO INC
Small laser radar detector
The utility model discloses a miniature laser radar detector, which comprises a diode assembly, a diode tube body, a tail fiber tube body, a collimator and a tail fiber, a lens is prefabricated at the front end of the diode assembly, the diode assembly is fixed in the diode tube body through 353 glue, the tail fiber is coupled and fixed at the front end part of the collimator, and the tail fiber is fixed at the front end part of the collimator. The collimator is fixed in the tail fiber tube body through 353 glue, the tail part of the diode tube body and the head part of the tail fiber tube body are welded and fixed at a lap joint through laser welding, and the outer diameter of the diode tube body is 1.9 mm; the pipe bodies are fixed through laser welding, bubbles are not generated, components are not affected, the product performance is stable, the use effect is good, the lens prefabricated in advance is simpler, more compact and smaller in structure, small in size, convenient to use and low in use cost, and the use requirement is effectively met.
Owner:XIAMEN BELLE INFORMATION TECH CO LTD
Optical phased array lidar system based on a light splitting system and scanning method thereof
ActiveCN121232199BUsing optical meansElectromagnetic wave reradiationRadar systemsImaging processing
The present application relates to the technical field of laser radar scanning, and particularly relates to an optical phased array laser radar system based on a light splitting system and a scanning method thereof, the system comprising: a light splitting system and an optical phased array laser radar.The laser radar comprises: a laser, an optical phased array, a visible light area array detector, a filter, a laser radar detector, an image processing module, a data processing module and a control module; the laser emits a laser beam; the optical phased array changes the direction and shape of the laser beam; the visible light area array detector obtains a two-dimensional gray scale image; the laser radar detector receives the light beam after filtering by the filter; the image processing module obtains a point cloud coordinate set; the data processing module generates a control parameter set; and the control module is used to control the optical phased array laser radar to scan a region to be scanned to obtain point cloud data.The present application has the advantages that, through target recognition or edge contour recognition, redundant data is reduced, and the complexity of subsequent data processing is reduced.
Owner:JILIN UNIVERSITY
Probe control method and device, storage medium and laser radar
A kind of detector control method and device, storage medium, laser radar, detector control method includes: in response to receiving trigger signal, determining target instruction in instruction table, the instruction table includes multiple sequentially arranged instructions, each instruction includes first instruction part and second instruction part, the first instruction part indicates at least one operation object, and the second instruction part indicates multiple sequentially arranged operation steps;Determine the target time parameter corresponding to the operation step indicated by the target instruction, the target time parameter indicates each time interval between the operation step indicated by the target instruction;According to the target time parameter, at least one operation object is controlled to execute the target instruction, and the operation object is detector.The technical scheme of the present application can realize the flexibility of detector control.
Owner:SHANGHAI HESAI INTELLIGENT TECHNOLOGY CO LTD
How to select targets for LIDAR in automatic mode
A method for selecting targets for a LIDAR involves generating a digital image of the surrounding environment using a device (3) for generating a wide-field environmental image record for LIDAR measurements. The device (3) is coordinated with a LIDAR detector (1). Objects suitable for reflecting a LIDAR laser beam are then detected on the digital image of the surrounding environment. The detected objects are then grouped into object groups that are physically close to each other. The detection and grouping of objects suitable for reflecting the LIDAR laser beam is performed by software processing of the digital image. The LIDAR then measures the distance to a designated object group. If the distance to the object group is measured, the object group is selected as a group of targets suitable for detection and measurement by the LIDAR. If the distance to the object group is not measured, the object group is excluded from the group of targets suitable for detection and measurement by the LIDAR.
Owner:SEC TECH SRO
Optical assembly for linkage of distance measurement and multispectral imaging
ActiveCN224203424UEnsure consistent responseImprove operational convenienceMountingsElectromagnetic wave reradiationLaser transmitterBeam splitter
The utility model relates to the technical field of optics, discloses an optical assembly for linkage of distance measurement and multispectral imaging, and lays a foundation for integration of multispectral imaging and distance measurement in the same system. According to the utility model, a second B / S beam splitter is arranged right above a first B / S beam splitter; the laser transmitter is positioned on the left side of the first B / S beam splitter; the laser radar detector and the CCD are located in the transmission direction and the reflection direction of the second B / S beam splitter respectively. A tunable light filter is arranged between the CCD and the second B / S beam splitter; wherein the detection wavelength of the laser radar detector is matched with the wavelength of the laser transmitter; a lens which shares the same optical axis with the laser transmitter and the first B / S beam splitter and can focus is reserved on the right side of the first B / S beam splitter; the optical distances between the first B / S beam splitter and the laser emitter, the CCD and the laser radar detector are equal; and a communication interface connected with the linkage controller is reserved on each electric control component.
Owner:SHENZHEN LUBANG TECH CO LTD
A test device and method for time stability of a streak tube laser radar detector
The application discloses a kind of test device of the stability of stripe tube laser radar detector with time, the device includes pulse signal trigger, host computer, laser collimation device and laser signal stripe tube imaging device, wherein: laser collimation device is constituted by laser and collimation system, and laser signal stripe tube imaging device is constituted by stripe tube detector and CCD camera.By the laser beam after collimation through stripe tube detector, the laser spot image obtained is stored into host computer using CCD camera, a large number of image data is stored by long-time running of the device, and then the offset of the centroid position of spot image with the working time of test device is analyzed by centroid extraction and other processing methods to achieve the purpose of testing the stability of stripe tube detector with time.The application can accurately collimate light beam, realize mode switching, ensure normal operation of each device of the system, and effectively test the stability of stripe tube detector.
Owner:HARBIN INST OF TECH