11 results about "Poor vision" patented technology

The utility model discloses an off-axis bifocal plane HUD optical system, which comprises an image source, an eye box, a lens, a first reflecting mirror, a second reflecting mirror and an automobile windshield, the image source comprises a first output part and a second output part, light of the first output part passes through the first reflecting mirror, the second reflecting mirror and the automobile windshield to enable the eye box to obtain a near focal plane, and light of the second output part passes through the first reflecting mirror, the second reflecting mirror and the automobile windshield. The light of the second output part passes through the lens, the first reflecting mirror, the second reflecting mirror and the automobile windshield to enable the eye box to obtain a far focal plane. The image source is divided into two parts, the lens is arranged on the light path of the second output part of the image source, and a near-focus virtual image and a far-focus virtual image are formed in front of the windshield, so that a driver can see the virtual image surface and timely obtain the driving information of the vehicle under the condition of poor visual field such as vehicle following or traffic jam, and the driving safety of the vehicle is improved. Therefore, the thickness of the crystalline lens can be adjusted when human eyes watch far and near focuses, and fatigue caused by long-time observation of a certain focal plane is avoided.

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 utility model discloses a filtering type fire-fighting self-rescue respirator, which relates to the technical field of fire-fighting equipment and comprises a protective mask, a support is fixed below the outer surface of the protective mask, buckles are fixed on two sides of the support, a propping plate is fixed on the outer surface of the support, and the outer surface of the protective mask is connected with a mounting plate through a corrugated pipe. Through the arrangement of the support, the abutting plate, the buckle and the corrugated pipe, when the filter tank needs to be replaced, the filter tank is directly taken out of the buckle, then the filter tank is pulled to enable the corrugated pipe to be stretched, at the moment, the filter tank is moved to the position in front of the window so that a user can check the filter tank conveniently, and then the filter tank can be replaced; the phenomenon that the filter tank is difficult to correspond to the mounting plate due to poor visual field and the mounting time is relatively long is avoided, so that the situation that a user inhales smoke or suffocated for a long time due to the relatively long mounting time is avoided, the filter tank is buckled into the buckle after being replaced, and meanwhile, the corrugated pipe is shrunk; therefore, the installation is convenient.

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 utility model discloses a sound feedback core training instrument which comprises an inflatable soft cushion, an extrusion sounder is installed in the middle of an inner cavity of the inflatable soft cushion, a connecting piece is arranged on one side of the inflatable soft cushion and connected with a hose, the end of the hose is connected with a connecting pipe, one end of the connecting pipe is connected with a pressure gauge, and the other end of the connecting pipe is connected with a pressure sensor. And the other end is connected with an inflating balloon. The device can be applied to patients with chronic lumbago, lumbar disc herniation, lumbar spinal stenosis and need to strengthen waist and abdomen core strength or stability by medical staff, can also be trained by the patients / people in need, is simple to operate, low in cost, convenient to use and easy to operate, can achieve the training target even if the eyesight is poor by utilizing sound feedback, and is suitable for popularization and application. And detection and training are integrally completed, so that the method can be used for evaluation and treatment, and is high in practicability.

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 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.