7 results about "Poor vision" patented technology

This utility model provides a visual safety guidance device for highway tunnels, relating to the technical field of tunnel guidance devices. It includes a mounting frame installed at the top of the tunnel facing the centerline of the wall at the diversion point, and several reflective modules mounted on the mounting frame. The mounting frame has inverted buckle portions on both sides of its bottom, and recessed holes are equidistantly spaced on the mounting frame, with spring bolt assemblies installed within these recessed holes. Each reflective module consists of a mounting base and a reflector, which are fixed together by bolts. The mounting base has a snap-fit ​​groove extending to both ends on one side corresponding to the recessed hole. This device is installed at the top of the tunnel, connecting to the diversion point at the tunnel's front end. Through the tunnel's lighting and the reflection from the reflectors, it effectively guides the driver's line of sight at the tunnel's front end, preventing collisions caused by obstructed vision or momentary distraction, especially for drivers with poor vision or astigmatism.

The present application relates to the field of vehicle control, in particular to a cleaning control method and device for a rear windshield of a vehicle and the vehicle. The present application can gradually solve the defects of the prior art by detecting the cleaning state of the front windshield and synchronously controlling the rear windshield to perform corresponding cleaning. First, the vehicle cleans the front windshield, which itself reflects that the current environment is prone to fogging, frosting and other shielding problems. This is used as a trigger condition to automatically start the rear windshield cleaning, avoiding the problem of delayed vision caused by forgetting to turn on the rear windshield heating. Second, the cleaning mode of the front windshield is used to synchronously control the rear windshield, which can quickly match the demisting or defrosting demand and timely eliminate the fog and shielding of the rear windshield, ensuring a clear central rearview mirror vision when changing lanes and eliminating the safety hazards caused by poor vision. At the same time, the actual cleaning demand is used as the driving force to replace the indiscriminate fixed time operation, avoiding unnecessary continuous work and effectively reducing energy consumption.

The application discloses a kind of multi-target detection methods for mine excavation environment, belong to target detection technical field.The existing target detection method appears the problem of difficult target detection, low detection efficiency under the poor mine excavation environment such as poor vision of dust, rain and fog, in order to solve the problem, the neural network used based on Yolov5 algorithm is improved, SPPF layer is used instead of SPP layer, and light ECA attention mechanism is added, the performance is improved on the basis of retaining the original algorithm inference speed and lightness, so that the neural network pays more attention to the detection target, improves the detection effect, can meet the multi-target detection task under the poor environment of mine excavation.

The invention provides a radar and vision fusion method and device based on binary Bayesian filtering, and relates to the technical field of multi-sensor target fusion. The method comprises the following steps: preprocessing visual acquisition data and radar acquisition data to obtain a visual detection result and a radar plot detection result; filtering invalid radar plots in combination with vehicle motion information, and determining a radar effective plot target; combining a visual detection result with a radar effective trace point target, and determining a first matching probability of each combination in the current period based on a radar and visual target attribute difference weight ratio; carrying out binary Bayesian filtering by taking the first matching probability as a prior probability to obtain a multi-cycle second matching probability; and finally, performing matching tracking on the target combination determined by the second matching probability, and fusing vision and radar detection results. Therefore, the problem of poor visual and radar correlation matching effect is effectively solved, and the accuracy and stability of multi-sensor target fusion are improved.

The application discloses an automatic lifting type water washing urinal and belongs to the field of sanitary ware devices. The automatic lifting type water washing urinal comprises an embedding cavity, a groove is formed in the inside of the embedding cavity, a circular groove is formed in the lower surface of the inside of the groove, a motor one is fixedly connected to the inside of the circular groove, a threaded rod is fixedly connected to the top of the output end of the motor one, the top of the threaded rod is rotatably connected to the upper surface of the inside of the groove, and a sliding block with holes is threadedly connected to the outer side wall of the threaded rod. The automatic lifting type water washing urinal realizes the free height adjustment of the urinal body through the cooperation of the motor one, the threaded rod, the sliding block with holes and related locking structures. In actual application scenarios, the traditional fixed-height urinal is difficult to meet the use requirements of people with different heights, children have problems such as inconvenience in stepping and poor vision when using the urinal, and adults may be uncomfortable when bending over when using some low urinals.

The invention discloses a control method and device of a vehicle headlamp, a vehicle and a computer readable storage medium, the vehicle headlamp comprises an illumination module used for illumination and a projection module used for projection, and the control method of the vehicle headlamp comprises the steps that whether the vehicle is in a target driving scene or not is judged; if yes, the projection module is controlled to project a projection image used for indicating the vehicle following distance in front of the running vehicle, so that a user can judge the distance between the vehicle and the front vehicle, visual safe driving guidance is provided for a driver, and too concentrated brightness caused by close distance is avoided; therefore, traffic accidents such as rear-end collision and the like can be prevented, and the safety of road driving is integrally improved; meanwhile, by means of the control method of the vehicle headlamp, the problem that a traditional headlamp is poor in lighting effect at night or under the condition of poor sight is solved, and the overall science and technology feeling and intelligence feeling of the vehicle can be improved.

The invention discloses a control method and device of a vehicle headlamp, a vehicle and a computer readable storage medium, the vehicle headlamp comprises an illumination module used for illumination and a projection module used for projection, and the control method of the vehicle headlamp comprises the steps that when the vehicle runs, the width of a vehicle body is obtained; and based on the vehicle body width, controlling the projection module to project a projection image with the same width as the vehicle body width in front of the running vehicle so as to indicate whether the vehicle can smoothly pass through the current road section. The trafficability of the vehicle can be judged by observing the projection image projected on the ground, and a driver is helped to be prevented from driving on a road section which is not suitable for passing, so that the accident risk caused by misjudgment is reduced; meanwhile, by means of the control method of the vehicle headlight, the problem that a traditional headlight is poor in lighting effect at night or under the condition of poor sight is solved, more visual and accurate visual assistance is provided for a driver, and the overall science and technology feeling and the intelligent feeling of the vehicle can be improved.