30results about How to "Increase sight distance" patented technology

The invention discloses a movable multifunctional buoy with a liftable sensing platform. The movable multifunctional buoy with the liftable sensing platform comprises a buoy hull, a control system, the liftable sensing platform, a propulsive control system, a communication navigation and positioning system, an external sensing system and an energy system; the buoy hull consists of a submerged body, an upper platform and a middle strut; and geometrical shape values of the buoy hull are all comprehensively calculated and determined in an optimized manner by taking buoy hull operability, seakeeping, rapidity and monitoring function characteristics into consideration. According to the movable multifunctional buoy with the liftable sensing platform, multiple data such as wind speed, wind direction, pressure, temperature, humidity, water temperature, pH value and oxygen content can be monitored; the monitoring of water surface environment and navigation of a ship can be realized; a better effect can be realized under cooperation of the movable multifunctional buoy and the liftable sensing platform; and meanwhile, as the propulsive control system is additionally arranged on the movable multifunctional buoy with the liftable sensing platform, the buoy possesses multiple abilities such as automatic returning and pollution source tracking under close cooperation of the propulsive controlsystem and the communication navigation and positioning system; and therefore, defects and shortcomings of a traditional buoy are effectively solved, and large-range monitoring and operation under high oceanic condition are realized.

The invention relates to the technical field of road safety, in particular to a low-grade highway tunnel entrance energy-saving induction system. The low-grade highway tunnel entrance energy-saving induction system is characterized in that road center double amber lines are arranged within the front overtaking sight distance of a tunnel entrance, and intermediate frequency linear induction signs are arranged within the decision-making line-of-sight range of the tunnel entrance with a spacing of 15-25m; high-frequency cat-eye spikes are arranged on a road centerline and lane sidelines from thedecision-making line-of-sight range outside a tunnel portal to the tunnel entrance section inside the tunnel portal with a spacing of 5-8m; an annular yellow-black facade marking line formed by a super aluminum back base reflective film is arranged on the tunnel portal of the tunnel entrance, the full outline of the tunnel portal is marked by the annular yellow-black facade marking line, and 4-5 high-frequency anti-collision barrels are arranged between the linear induction signs and the tunnel portal of the tunnel entrance with a spacing of 5-8m; and the entrance section inside the tunnel portal is provided with no less than 5 continuous light reflection rings, the interval is 15 to 25 m, and the two sides of the tunnel portal are symmetrically arranged. A safety visual reference system is constructed by using energy-saving materials, visual perception of a driver is induced during driving, and the low-grade highway tunnel entrance energy-saving induction system is applied to a secondary road with a speed limit of 60 km / h and lower grade road tunnels.

The invention discloses a rear-mounted type head-wearing virtual reality display equipment, comprising a shell, a display, a sensor group, a computing element group, a plurality of reflectors, a leftlens group and a right lens group, wherein the display is arranged on the inner surface of the rear side of the shell, and the two lens groups are separately designed on the left and right sides in the shell, so that the weight is averagely distributed to the four sides of the shell, the uncomfortable feeling of the neck of a person wearing the equipment is avoided, and thus the equipment can be used for a long time; furthermore, the front of the shell is not too thick, the user wearing the equipment does not feel uncomfortable, the quantity of the lens groups is not limited, and the limitation of magnification (namely sight distance of human eyes) is not caused.

The invention discloses a light transmission adjustable reflection screen, a control device and a display system with the reflection screen and the control device. The light transmission adjustable reflection screen comprises a liquid crystal shading layer and a reflection layer; the liquid crystal shading layer comprises liquid crystal glass and Polaroids at the two sides of the liquid crystal glass; and the reflection layer comprises coated glass connected with the Polaroids and a semi-reflection semi-transmission film connected with the coated glass. The reflection screen can change the light transmittance of itself under different illumination intensities to improve the sharpness of reflected content, and when the screen is applied to a head up display, a user can see the display content needless of lowering the head in the driving process.

The invention discloses a method and system for real-time intelligent measurement of railway heavy rainfall by unmanned aerial vehicle. The method realizes active rainfall measurement for the local moving environment of the controlled train by introducing an unmanned aerial vehicle rainfall measurement device, and utilizes the unmanned aerial vehicle rainfall The measuring device carries a microwave rain gauge, a train speed measuring device, a thermometer, and a hygrometer to measure the temperature, humidity, rainfall, and speed of the train, and calculates the safe speed limit of the train under the current rainfall condition in real time, avoiding from the technical plan The "monitoring blind spot" of rainfall; according to the collected rainfall, train speed and line slope information, the line-of-sight distance of the train is calculated in real time, and the mobility of the UAV device is used to monitor the line-of-sight of the train in real time using the UAV image transmission device. The image of the line is sent back to the on-board display device of the train, which expands the train driver's sight distance under heavy rainfall conditions and improves the operational safety of high-speed trains in heavy rainfall environments.

The invention discloses an intelligent lighting system and method for an expressway tunnel. The invention can intelligently control the illumination brightness of the lamp group in the expressway tunnel in real time according to the actual illumination and its change of the environment outside the tunnel exit entrance, so that the driver can When passing through the tunnel, the eyes can gradually adapt to the obvious light and dark changes inside and outside the tunnel, shorten the time for dark adaptation and light adaptation, improve the driver's sight distance, reduce the stimulation of sudden changes in light brightness to the driver, and ensure the traffic safety of expressway tunnels .

The invention discloses an improved highway tunnel illumination assistant device. According to difference values between the illumination intensity of environments outside an exit and an entrance of atunnel and the illumination intensity in the tunnel, and the changes of the difference values, highway tunnel lamp sets with gradually changed certain distance illumination brightness are arranged inthe exit and the entrance of the tunnel, so that when a driver passes through the tunnel, the eyes can be gradually adaptive to obvious brightness changes inside and outside the tunnel, the time fordark adaptation and light adaptation is shortened, the sight distance of the driver is improved, the irritation of the sudden change of the illumination brightness to the driver is reduced, and the traffic safety of the highway tunnel is guaranteed.

The invention discloses a sitting posture correction table, which is characterized in that an inset groove is provided on the table top of the table body, limit strips are respectively provided on the inner walls of both sides of the inset groove, and The fixed bar and the lower jaw support column, the fixed bar passes through the lower jaw support column, and a slot cover is provided above the indented groove, and the slot cover is connected with the table body through a pin shaft, and a limiting slot is provided at one end of the slot cover. The invention can effectively prevent myopia. The mandibular support column can effectively help students maintain a correct sitting posture, and at the same time help students maintain a good line of sight with the desktop to prevent myopia. It can be taken out from the recessed groove, which is convenient to use and takes up less space.

The embodiment of the invention provides a positioning method, device and equipment. According to the positioning method, device and equipment, positioning parameters of a positioning signal are acquired. The positioning signal comprises a first positioning signal and a second positioning signal, wherein the first positioning signal serves as communication signal between an auxiliary positioning unmanned aerial vehicle and a ground base station; the second positioning signal serves as communication signal between the auxiliary positioning unmanned aerial vehicle and points to be positioned, and the number of the auxiliary positioning unmanned aerial vehicles is no less than three. The position coordinate of the points to be determined can be determined based on the positioning parameters of each second positioning signal and the position coordinate of each auxiliary positioning unmanned aerial vehicle. In the positioning process, an auxiliary positioning unmanned aerial vehicle which is relatively close in distance and has a certain height is used as an auxiliary positioning device; good sight distance is provided, the strength of the positioning signals is guaranteed; the blockingof the barriers can be avoided, and the stability and the accuracy of positioning are improved.

The invention discloses a light transmission adjustable reflection screen, a control device and a display system with the reflection screen and the control device. The light transmission adjustable reflection screen comprises a liquid crystal shading layer and a reflection layer; the liquid crystal shading layer comprises liquid crystal glass and Polaroids at the two sides of the liquid crystal glass; and the reflection layer comprises coated glass connected with the Polaroids and a semi-reflection semi-transmission film connected with the coated glass. The reflection screen can change the light transmittance of itself under different illumination intensities to improve the sharpness of reflected content, and when the screen is applied to a head up display, a user can see the display content needless of lowering the head in the driving process.

The invention provides a remote measurement receiving and processing system based on a high-altitude mooring platform, the system includes a target moving body, a high-altitude mooring, a telemetry device, a ground receiving and processing device and a remote control device, and the telemetry device is arranged on the high-altitude mooring , the telemetry device is used to receive the telemetry information sent by the target moving body in real time, the ground receiving and processing device is respectively connected with the high-altitude moorings and the telemetry device, and the ground receiving and processing device is used to solve the telemetry signal transmitted by the telemetry device in real time to obtain the target movement The image information of the target is set according to the flight position and attitude of the target moving body and the moving route of the target moving body. flight status. The technical solution of the present invention is applied to solve the technical problems that the telemetry receiving and processing system in the prior art cannot monitor the moving target in real time and has poor long-distance telemetry capability.

The invention discloses a visual rubber ball cleaning device which comprises a minitype high definition camera. The minitype high definition camera is connected with a video transmission cable, a network switch, a network embedded type storage and a video processing server. The visual rubber ball cleaning device further comprises a protective sleeve, wherein transparent glass is installed at one end of the protective sleeve, and a video camera is installed in the protective sleeve. The visual rubber ball cleaning device further comprises a video positioning conduit, one end of the video positioning conduit is fixed at a ball receiving net shell body, a thread matched with the protective sleeve is machined on the conduit wall of the video positioning conduit, and a sealing ring is installed at the other end of the video positioning conduit. The visual rubber ball cleaning device has the advantages of being good in use effect, simple in structure, low in cost and high in degree of automation.

The invention discloses an intelligent lighting device for an expressway tunnel, which can intelligently control the illumination brightness of the lamp group in the expressway tunnel in real time according to the actual illumination and its change of the environment outside the tunnel exit and entrance, so that the driver can pass through the tunnel At the same time, the eyes can gradually adapt to the obvious light and dark changes inside and outside the tunnel, shorten the time for dark adaptation and light adaptation, improve the driver's sight distance, reduce the stimulation of sudden changes in light brightness to the driver, and ensure the traffic safety of expressway tunnels.