242 results about "Blind zone" patented technology

A method of providing views in a camera monitor system (CMS) for a vehicle including a tractor and a trailer includes receiving first and second captured images from first and second cameras that respectively provide first and second fields of view alongside a left side and a right side of the vehicle, the first and second fields of view are other than legally prescribed narrow- or wide-angle views that include the trailer, receiving a third captured image from a centrally located vehicle camera to provide a third field of view in a central blind spot of the vehicle, and simultaneously depicting the first, second and third captured images as discrete, unstitched images on at least one display.

The utility model provides a kind of electronic thoracoscope with universal bending insertion part, including operating part and insertion part extending along length direction, the insertion part includes front end portion, active bending section, passive bending section and rigid pipe section from distal end to proximal end in order, the front end portion is equipped with optical imaging module and illumination light source;Active bending section is set in the proximal end of the front end portion, by multiple jointed snake bone unit, actively bends in response to operating part control;Passive bending section is connected to the proximal end of active bending section, the passive bending section has universal bending characteristic and the bending stiffness of the passive bending section is less than active bending section;Rigid pipe section is connected to the proximal end of passive bending section.The utility model expands the observation range of thoracoscope by passive bending section, reduces observation blind area, avoids the direct confrontation of active bending section and the rigid structure of guide sleeve inlet, prolongs the service life of equipment, reduces the loss risk of equipment.

The application discloses a pet care air purifier parameter intelligent control method and system, aiming at solving the problem that the existing purifier is difficult to identify the long-time stillness of pets in the monitoring blind area, resulting in the accumulation of local pollution. The method continuously receives the data stream of the visual sensor and the passive infrared sensor, and when no clear pet signal is detected within the preset time, the blind area intention inference instruction is activated, the multi-dimensional environmental abnormal signal of odor, local temperature and particulate matter is collected, and after time consistency, space correlation and comprehensive threshold correlation analysis, the adaptive purification strategy of fan speed fine tuning, filter optimization and directional airflow guidance is executed after the pet in the blind area is confirmed to be still. According to the recovery of pet activity or the weakening of environmental abnormalities, the method can be switched to the normal mode or the low-power mode. The application can accurately identify the still state of the pet in the blind area, remove the pollutants in a targeted manner, balance the purification efficiency, energy saving and low noise, and improve the fine management level of indoor air quality.

This invention relates to the field of integrated driver-trailer technology for heavy-duty commercial vehicles, specifically to a 360° surround view system for integrated driver-trailer heavy-duty trucks. The system includes an environmental monitoring controller, with its input linearly connected to cameras and its output linearly connected to a multimedia screen. The environmental monitoring controller receives image information from four cameras on the driver vehicle and three cameras on the trailer, processes the image information, and sends it to the multimedia screen. A corner recognition calibration ball is located at the front of the tanker truck, used to identify the hinge angle between the driver and trailer in real time and send the acquired data to the environmental monitoring controller. This system solves the problem of drivers being unable to observe the 360° field of vision around the driver and trailer in real time from inside the cab, resulting in blind spots during vehicle movement, turning, and reversing, which can easily lead to safety accidents. It improves the safety of people, vehicles, and goods during train transportation and effectively reduces the incidence of safety accidents caused by blind spots during transportation.

We provide a dashcam with a wide recording range and few blind spots, a display device for the dashcam, and a program. [Solution] The drive recorder 10 includes a main body case 13 that houses a control unit and recording means, and is equipped with a first camera 26 and a second camera 27 that capture an area of ​​more than a hemisphere. The two cameras are mounted in the housing 25 so as to capture opposite directions. When the main body case 13 that houses the control unit, etc., is attached and fixed to the windshield, the vehicle's dashboard and pillars are captured at the edges of the images captured by the two cameras.

This invention discloses a vehicle cooperative positioning system for traversing continuous blind zones, comprising a module for acquiring multi-source observation data, a module for constructing a spatiotemporally consistent cooperative factor graph, a cooperative constraint optimization module, an adaptive cooperative strategy adjustment module, and a cooperative information re-fusion module. This invention belongs to the field of data processing technology, specifically a vehicle cooperative positioning system for traversing continuous blind zones. This scheme employs observability-driven cooperative constraint construction and spatiotemporally consistent cooperative factor graph modeling, maintaining high observability and stable positioning even in scenarios without satellite signals, achieving unified fusion of multi-source heterogeneous data. It utilizes communication quality-driven adaptive cooperative switching and predictive prior constraints for delay-compensated re-fusion, achieving autonomous positioning without drift during communication interruptions and unified global trajectory calibration after communication recovery, providing high-precision and continuous positioning support for traversing continuous blind zones.

The application discloses a rotary telescopic dual-coherent antenna and an azimuth adjusting method thereof, wherein the rotary telescopic dual-coherent antenna comprises a pair of antenna monomers, each of which is provided with a rotating platform and a lifting device arranged on the rotating platform, the upper end of the lifting device is provided with an antenna body, the rotating platform is used for driving the lifting device and the antenna body to rotate around a vertical line, and the lifting device is used for driving the antenna body to ascend and descend. Advantageous effects: the technical scheme of the application can achieve various different baseline lengths by setting the rotary telescopic dual-coherent antenna, controlling the rotation or the ascent and descent of the dual-coherent antenna, thereby realizing the function of receiving signals of any azimuth and emitting coherent signals of any azimuth, and effectively eliminating the problem that the existing antenna cannot fully play the function due to the blind area or the weak function area.

This invention provides a method and system for constructing a 3D model of a construction site by combining multiple data sources. It relates to the field of data processing technology. The method includes: retrieving satellite imagery at a preset resolution to obtain a full-area stereo image pair dataset; performing radiometric correction to generate a regional surface model and a regional elevation model; performing raster-level modeling defect detection to locate distributed blind zone blocks; fitting obstacle avoidance paths to generate optimized obstacle avoidance flight trajectories; driving a UAV to perform multi-angle surround scanning to directionally collect dense point clouds in the distributed blind zones; constructing a distributed blind zone model; and performing microscopic overlay to output a 3D model of the construction site. This invention solves the technical problems of existing construction site modeling methods, which have limitations in coverage, modeling efficiency, and data real-time performance, and rely on a single data source, failing to provide a comprehensive and accurate 3D model of the construction site, thus affecting construction progress and decision-making.

This invention discloses a distributed WiFi indoor personnel detection and intelligent control method and system with resistance to environmental interference, relating to the fields of wireless sensing and IoT control. The method includes: sensing nodes collecting CSI sequences, constructing frequency domain features through fast Fourier transform, using an adaptive notch filter algorithm to identify and eliminate periodic interference at specific frequencies, and extracting the non-periodic spectral energy of human breathing and micro-movements; the edge gateway employing a lightweight decision fusion strategy, performing a logical "OR" operation on the local features of multiple nodes, and utilizing spatial diversity to eliminate single-link line-of-sight blind spots and multipath dead zones; the controller constructing a dual-threshold three-state state machine based on CSI statistical features, setting a high trigger threshold to prevent false alarms, a low hold threshold to maintain static detection, and introducing an early warning mechanism. This invention effectively solves the problems of traditional wireless sensing being susceptible to interference in complex dynamic environments and having a high rate of missed static personnel detection, achieving highly robust non-contact personnel detection and energy-saving lighting control.

The present application relates to the technical field of blind area monitoring and early warning, and particularly relates to a blind area intelligent early warning detection device and method for large engineering vehicles, which comprises a main body and a fixing frame fixed on the main body, the main body comprises a protective shell, a lifting mechanism is arranged on the inner wall of the protective shell, an adjusting mechanism for adjusting the detection angle is connected to the lifting mechanism, a blind area early warning device is fixedly installed on the adjusting mechanism, a cleaning mechanism for cleaning the blind area early warning device and a self-checking mechanism for detecting the function of the blind area early warning device are further arranged in the protective shell, the overall device protects the blind area early warning device from the influence of the environment in the daily parking state, reasonably adjusts the monitoring area through the adjusting mechanism, improves the monitoring efficiency, integrates all functional components in the protective shell, realizes the modular design of the device, improves the protection level and maintenance convenience of the equipment, and realizes efficient blind area detection.

The present application relates to the technical field of intelligent auxiliary driving of automobiles, and particularly relates to a blind area monitoring system based on a low-computing-power processing unit of a commercial vehicle platform, a blind area range calibration module calibrates a blind area monitoring camera, and provides a preprocessing operation; an image processing module and a perception algorithm module are used for receiving blind area perception information of the camera, judging blind area perception results through an image processing algorithm and a deep learning algorithm, and customizing a blind area monitoring model; an information processing module provides computing power support for the blind area perception model, customizes the blind area monitoring model, and improves inference speed and inference accuracy of the model; a warning prompt module is used for feeding back potential danger warning information to a driver. Through combination of blind area range calibration and customized strategies such as image processing and perception algorithms, an efficient real-time blind area monitoring system based on a low-computing-power information processing unit is realized, which can send warning information to the driver in real time, has low system power consumption, and has strong robustness and scalability.

The application discloses a non-blind area panoramic annular stereoscopic imaging lens, which comprises lenses L1, a panoramic annular lens L2 and a rear lens group G3 arranged in sequence along an optical path direction and arranged along an optical axis; the L2 comprises a front transmission surface R3 and a front reflection surface R4 on a subject side; and the L2 comprises a central transmission surface R5 and a polarization light splitting half-reflection half-transmission surface R6 on an image side; the L1, the L2 and the G3 form three channels; a field of view range of a front channel is 0~alpha, and light rays pass through the L1, the R3, the R5 and the G3 in sequence to reach an image plane; a field of view range of a panoramic channel is alpha~beta, and light rays pass through the R3, the R6, the R4, the R5 and the G3 in sequence to reach the image plane; a field of view range of a stereoscopic imaging channel is gamma~theta, and 0<gamma<theta<beta, light rays pass through the R3, the R6 and the G3 in sequence to reach the image plane to form a stereoscopic vision image. The application has no central blind area, has a large stereoscopic imaging field of view, can realize single-lens stereoscopic imaging in a visible light range and has a simple head structure.

This invention relates to the field of intelligent video surveillance and artificial intelligence analysis technology, specifically to a method for identifying abnormal behavior in gas stations by integrating cross-camera behavior chains. The method includes: collecting multiple video streams, historical trajectory data, a 3D spatial topology map containing blind spot nodes, and operating procedure text; extracting target appearance and movement features, combining topological connectivity probability and dynamic tolerance for cross-camera joint matching to generate an identity identifier; stitching trajectories according to timestamps, and inserting blind spot abnormal dwelling nodes in timed-out cross-node segments to form a spatiotemporal behavior path; inputting the path text and video stream slices along with the procedures into a visual language model for behavioral intent reasoning; determining the abnormality category, calculating a dynamic risk score, and triggering a graded alarm; this invention organizes fragmented actions and blind spot dwellings into a reasonable behavior chain, achieving dangerous logical behavior identification.

This disclosure provides a blind spot obstacle warning method, device, electronic device, and storage medium. It involves controlling a blind spot radar installed in front of a vehicle to emit blind spot radar signals perpendicular to the ground and receive corresponding echo signals; determining the installation height of the blind spot radar and the corresponding chassis height of the vehicle; determining whether a target object exists in front of the vehicle based on the echo signals; if so, determining the vertical distance between the blind spot radar and the target object; determining the height of the target object based on the installation height and the vertical distance; if the object height is greater than or equal to the chassis height, determining the target object as an obstacle; and sending blind spot obstacle warning information to the vehicle. This can improve the accuracy of obstacle detection in the vehicle's blind spots.

The application provides a blind area auxiliary display system, comprising: a camera module located outside an automobile and configured to acquire a first image within a preset range outside the automobile, the preset range including a visual field blind area of a driver blocked by a A pillar of the automobile; a display control module electrically connected to the camera module, configured to receive the first image and output a display control signal according to content in the first image; and a display module located inside the automobile, electrically connected to the display control module, configured to display at least part of the first image according to the display control signal when turned on. The application also provides an automobile.

Embodiments of the present application disclose a collision behavior prediction method and device, electronic equipment and medium. The method comprises: predicting the movement direction and trajectory of a target according to the movement correlation information of the target; wherein the target comprises a first target and a second target; determining the blind area of the target at a prediction time according to the movement direction and trajectory of the target; wherein the prediction time is any time after the current time; determining a collision behavior prediction result according to the positional relationship between the blind area of the first target and the blind area of the second target at the prediction time, and the positional relationship between the blind area of the second target and the blind area of the first target at the prediction time; wherein the blind area of the first target is the blind area corresponding to the first target, and the blind area of the second target is the blind area corresponding to the second target. Through the above technical solution, the collision behavior of the second target and the first target can be accurately predicted, and the timeliness and accuracy of the collision behavior prediction are improved.

The application discloses a novel grate cooler for improving blind area red river of a grate, which comprises a shell, a grate plate and a conveying mechanism, wherein sealing strips are arranged on the inner walls of the two sides of the shell, the grate plate is arranged on the inner side of the sealing strips and is in sliding fit with the sealing strips, the conveying mechanism which moves along with the grate plate is arranged above each sealing strip, and a blowing assembly is arranged on the conveying mechanism to cool clinker on the sealing plate; the clinker on the sealing strip can be conveniently conveyed and the clinker on the sealing plate can be cooled at the same time, so that the temperature in the interior of the grate cooler is ensured.

Optical device designed to display an image of an outside scene of an area of ​​a blind spot (13) to a viewer (10) when an obstacle (12) is within a viewer's field of vision, wherein the optical device comprises: a light guide (2) with an incident surface (2a) onto which outside scene light (LV), coming from the area of ​​the blind spot (13), falls, a first surface (2b) having several flat sections (3) and several prism sections (4), wherein the outside scene light incident from the incident surface first reaches the first surface, and a second surface (2c) which is arranged opposite the flat sections of the first surface; wherein a light-shielding section (51, 52) is arranged on a surface of the light guide or at a position away from the light guide to block an external light (LD) that would enter the light guide, wherein The flat sections of the first surface totally reflect the outside scene light, which propagates within the light guide, towards the second surface. the second surface totally reflects the outdoor scene light, which was reflected through the flat sections, towards the first surface, Each of the prism sections has an exit surface (4a) for emitting outwards a portion of the external scene light incident from the incident surface and a portion of the external scene light reflected by the second surface, and an inclined surface (4b) which is arranged opposite to the viewer with respect to the exit surface. the light-shielding section comprises a first light-shielding section (51) designed to block external light incident on the inclined surface and a second light-shielding section (52) designed to block external light incident on the flat section in a predetermined direction. in a cross-sectional view that includes a normal to the exit surface and a normal to the flat section, θ is an angle formed between the normal to the flat section and a line connecting a center of a predetermined exit surface and an eye point center (15) of the observer, L is a distance between the center of the predetermined exit surface and the center of the eye point. DL is a distance between the eye center and an outer edge of the eyelids (14) of the viewer from the light guide in a direction perpendicular to the line connecting the center of the predetermined exit surface and the eye center, θmin is an angle defined by θ-tan -1 (DL / L) is represented a straight line A passes through a point (4c) where the exit surface and the inclined surface intersect, and the straight line A is symmetrically incident on the flat section at the angle θmin with respect to the normal to the flat section, a straight line B runs parallel to the straight line A and intersects at a point where the inclined surface and the flat section intersect, the straight line A intersects the flat section at a point P1, the straight line B intersects the flat section at a point P2, the exit surface intersects the flat section at a point P3, A distance Fa is defined between point P1 and point P3. A distance Fb is defined between point P2 and point P3. Fa < Fb is satisfied, and the second light-shielding section is arranged such that it covers straight line A and straight line B.

This invention discloses an emotion analysis and feedback device based on visual and audio recognition in the field of psychological instruments and equipment technology. The device includes: a mobile base; a functional panel, vertically fixed to the top of the mobile base; a positioning ring, vertically suspended to the side of the functional panel, with an internal opening larger than the frontal contour of the human body, used for centering the user and restricting their sitting posture; a connecting arm, one end connected to the lower end of the functional panel and the other end connected to the positioning ring, used to support the positioning ring in a suspended state; and a flexible covering assembly located above the connecting arm, its surface forming a sloped structure facing the functional panel, used to guide the user's gaze to focus on the functional panel. This device features a hollow, large-sized positioning ring, which can center and align the user's torso and correct their sitting posture, avoiding blind spots caused by posture deviation. Combined with multi-directionally deployed visual and audio acquisition components, it significantly improves the accuracy of emotion analysis.

The present disclosure discloses a status monitoring method and device, an electronic device, and a storage medium. Since a collaborative monitoring network composed of multiple types of intelligent agents is adopted, it can targetedly cover blind spots in perspectives such as the top of the coal bunker and the corners of the corridors, and at the same time adapt to complex scenarios with large slopes and many obstacles, compensating for the application limitations of traditional devices; by performing spatio-temporal synchronization processing on multi-modal sensor data, constructing a unified data feature representation, and then combining image enhancement technology to strengthen the abnormal recognition ability of visual data, and pairing it with an environmental multi-parameter association model to analyze environmental data in real time, ensuring that the monitoring information is comprehensive and accurate, achieving the technical effects of improving the equipment and environment monitoring coverage rate in high-risk scenarios such as the coal conveying system, accurately identifying abnormal equipment operations, timely generating linkage warning information, strengthening the safety and intelligence level of thermal power operation and maintenance, and ensuring the stable operation of industrial equipment.

The application discloses a kind of boiler pressure pipeline detection methods, it is related to pipeline detection technical field, method includes collecting pipeline non-blind area surface image and completing standardization pretreatment, defect segmentation is carried out based on pretreatment image, defect feature is extracted and non-blind area defect state is judged;Cylindrical space mapping model is constructed to obtain the coordinate mapping relationship of non-blind area and blind area, while constructing blind area stress prior model to obtain blind area stress weight distribution;When there is defect in non-blind area, defect feature is conducted to blind area and is corrected to generate blind area defect reasoning feature, and when non-blind area is defect-free, blind area stress boundary verification is completed and safety result is generated;Corresponding data is fused to generate global defect representation data, and the global detection result of pipeline is determined accordingly.The present application can realize the global defect detection of boiler pressure pipeline, effectively eliminate the risk of blind area missed detection, and greatly improve the integrity and reliability of pipeline detection.

The application discloses a kind of intelligent control excavator laser radar identification device, belong to excavator laser radar technical field, this intelligent control excavator laser radar identification device, including control excavator ground movement's walking component, walking component is equipped with mechanical arm, mechanical arm is rotatably installed with excavator, walking component is installed with the driver's cabin of human control mechanical movement, the top surface of driver's cabin is fixed with support frame, two groups of hollow tubes are vertically fixed on support frame, telescopic connection is equipped with lifting rod in hollow tube, the top of lifting rod is rotatably connected with steering seat, the upper surface of steering seat is fixed with disc base, disc base is fixed with the laser radar detection device for providing environmental data for intelligent control, and laser radar detection device upper end surface is rotatably provided with camera for further sensing, monitoring surrounding environment;The laser radar identification device can adjust the detection and identification height and angle in real time, avoid detection and identification blind area, improve the precision of excavator intelligent control.

The application discloses a kind of confined space operation safety real-time monitoring and intelligent management system, comprising: confined space entrance integrated box, confined space field operation integrated box, intelligent safety helmet and safety control center, touch screen industrial computer is integrated in confined space entrance integrated box, first camera, first sound-light alarm and first microphone;Confined space field operation integrated box is integrated with second camera, gas detection device, one-key alarm device and second sound-light alarm;Intelligent safety helmet is fixedly provided with third camera;Safety control center is used for centralized monitoring, intelligent early warning, process management, equipment control, data traceability and AI violation identification to confined space operation.The confined space operation safety real-time monitoring and intelligent management system provided in the application eliminates monitoring blind area, realizes the automatic linkage of alarm and voice communication, and supports on-site rapid deployment and relocation.

1. Name of this design product: Dual-purpose blind spot rearview mirror. 2. Purpose of this design: For use as a car rearview mirror to assist in reversing. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: Point A in each 3D diagram is a mirror; the curved pipes connecting the middle of each design can be removed, and the remaining parts can still be assembled and used.

The application relates to a TDC system, in particular to a high-resolution TDC system based on a complementary blind mechanism and a time interval measurement method; a first processing chip, as a main processing channel, is responsible for high-speed coarse-grained sampling of a to-be-measured analog signal, determination of a blind area position of a time interval, provision of a coarse delay measurement value, and calculation of a fine time measurement value sent by a second processing chip to obtain a high-precision time interval measurement result; the second processing chip, as an auxiliary processing channel, is responsible for fine complementary blind of the blind area determined by the first processing chip, fine-grained sampling of the to-be-measured analog signal, accurate measurement of a high-resolution fine time measurement value in the blind area, and sending to the first processing chip; the technical scheme provided by the application can effectively overcome the defects of the prior art, i.e., the high-performance TDC solution does not simultaneously consider high resolution, high data bandwidth, high integration and reasonable cost.

If a vehicle is unable to recognize a designated passing area, it becomes difficult to smoothly pass other vehicles. [Solution] The external information processing device 10 includes: an external information acquisition unit 13 that acquires external information about the surroundings of the vehicle based on the results recognized by the external recognition unit; a visible area acquisition unit 14 that acquires a visible area as a drivable area visible from the vehicle based on the external information; an oncoming vehicle state determination unit 15 that determines the state of the oncoming vehicle based on the visible area and information about the behavior of the oncoming vehicle; a blind spot area acquisition unit 16 that acquires a blind spot area which is a blind spot for the vehicle based on the state of the oncoming vehicle, the visible area and the position of the oncoming vehicle acquired based on the external information; and a virtual escape area acquisition unit 17 that acquires a virtual escape area for the vehicle and the oncoming vehicle to pass each other based on the visible area and the blind spot area.

A support frame for 3D laser scanner measurement includes: a base, fixed legs, a fixed pan / tilt head, a first height fine-tuning unit, and a second height fine-tuning unit. The 3D laser scanner is mounted on top of the base, and the fixed legs are pivotally connected to the bottom of the base. The fixed legs are positioned on the ground. The fixed pan / tilt head is positioned between the base and the 3D laser scanner. The first height fine-tuning unit is located below the fixed pan / tilt head, extending from the top to the bottom of the base. The second height fine-tuning unit is located inside the first height fine-tuning unit, extending from the top of the fixed pan / tilt head to the bottom of the first height fine-tuning unit. This invention solves the technical problem of the limited vertical field of view of the 3D laser scanner, resulting in a scanning blind zone near the bottom of the support frame, and avoids the technical problem of the fixed legs of the support frame swinging after being brought together, leading to damage to the fixed legs.

The application relates to the security check technical field and discloses a door plate applied to a security check device, the security check device has a detection channel, the door plate comprises a door plate body and a detection module, and the detection module is arranged on the door plate body. The detection module comprises a fundamental wave emission unit for emitting a fundamental wave signal, a first receiving unit and a second receiving unit, and the first receiving unit and the second receiving unit are used for receiving a harmonic wave signal. The first receiving unit and the second receiving unit are located at different positions in a first direction, wherein the first direction is parallel to the running direction of the detection channel. The door plate and the security check device provided by the application can reduce the range of the detection blind area in the running direction and reduce the false negative rate.