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81results about How to "Improve the sense of speed" patented technology

Tunnel back reflection illuminating system setting method based on train speed control and train distance keeping

The invention discloses a tunnel back reflection illuminating system setting method based on train speed control and train distance keeping. The method comprises the steps of: arranging tunnel side walls, red and white facade marked lines on lower edges of curbs, and road surface raised pavement markers on road sides to form a space high-frequency vision information stream; secondly, arranging a plurality of layers of outline markers on the tunnel side walls at intervals of 25-50m in an advancing direction, arranging side wall vertical marked lines and extending to the top of a cave, transversely arranging transverse wrong vision marked lines on the road surface to form a space medium-frequency vision information stream; and then arranging two white folded lines and vibration marked lines on the road surface every 3 medium-frequency transverse marked lines at intervals of 100-200m in the advancing direction, and arranging two white folded lines on the side walls to form a space low-frequency vision information stream. Multiple channels of frequency vision systems are made of a high-strength back reflection material, so that a back reflection illuminating system is formed, perception of velocity and perception of distance of a driver are effectively improved, thus the integration of tunnel illuminating benefit and tunnel safety is achieved. The tunnel back reflection illuminating system setting method can be applied to tunnel illumination of low-light expressways with speed limit of 60-80km / h and traffic safety facility improvement.
Owner:WUHAN UNIV OF TECH

Low-cost mountainous-area expressway tunnel entrance vehicle speed control facility designing method

The invention discloses a low-cost mountainous-area expressway tunnel entrance vehicle speed control facility designing method which comprises the following steps of: setting red-and-white mark lines and road-side road surface and in-road lane line raised road signs on the side wall of the tunnel entrance, the lower edge of curb and the plane of the overhauling way at a space of 1.5-3m to form a high-frequency vision information flow; setting intermediate-frequency information at the tunnel entrance in the advancing direction every 20-30m, setting 3 layers of delineators on each side wall of the tunnel from top to bottom, setting a side wall vertical mark line and 2 side wall white broken lines, and setting a transverse staggered vision mark line and 2 white broken lines on the road surface to form an intermediate-frequency vision information flow; and forming a retroreflection illumination system from the retroreflecting materials by use of the high and intermediate-frequency vision information. Road-side road surface raised road signs and transverse deceleration mark lines (consisting of transverse vibration mark lines and transverse staggered vision mark lines) are arranged in front of the tunnel entrance, and the longitudinal space of the transverse deceleration mark lines turns smaller at first and then becomes stable to form a tunnel pre-deceleration system. The retroreflection illumination system and the deceleration system form the tunnel entrance vehicle speed control facility which realizes reasonable transition of the vehicle speed at the tunnel entrance and is suitable for the mountainous-area expressway tunnel entrance with the speed limit of 60-80km / h.
Owner:WUHAN UNIV OF TECH

Urban river-crossing bridge traffic landscape design method based on multi-frequency color information

The invention relates to an urban river-crossing bridge traffic landscape design method based on multi-frequency color information. Yellow and black or blue and white lamp pole facade marking lines are arranged on the lower edges of two sides of lamp poles, at the interval of 25 m to 35 m, of a bridge; transverse visual illusion marking lines are arranged at the positions, corresponding to the yellow and black or blue and white lamp pole facade marking lines, of the road surface; road surface protruding road marks are arranged at the interval of 12.5 m to 17.5 m, and therefore the space intermediate frequency visual information flow is jointly formed. Yellow and black or blue and white road side facade marking lines are arranged on the lower edge and the top of curb stone at intervals of 1.5 m to 3 m, and therefore the space high frequency visual information flow is formed; a set of road surface transverse white folding lines is arranged every four lamp poles in the advancing direction, and yellow or blue bridge handrails are arranged on the road side, so that the space low-frequency visual information flow is formed. The multi-frequency color information flow can effectively improve the speed perception, the distance perception and the visual sensitivity under high and low illuminance of a driver in the vehicle driving process, and unification of urban river-crossing bridge traffic landscape coordination and vehicle driving safety is achieved.
Owner:WUHAN UNIV OF TECH

Light-emitting guide system for rural highway tunnels

The invention relates to a luminous induction system for rural road tunnels. According to the light environment characteristics of different sections of the tunnel, driving characteristics and visual characteristics of the driver, short tunnels are divided into short tunnels <200m and medium-short tunnels of 200-500m, and short tunnels of 200-500m are divided into: entrance section, middle section, In the exit section, multi-frequency and multi-size luminous induction facilities are set according to the characteristics of the road section; a reminder area is also set in the middle section; the high-frequency small-size induction information is set on the outside of the lane or at the maintenance road with the highest brightness, and the medium-frequency small-size induction information is set on The brightness of the side wall is lower than that of the curb induction information. The medium-scale induction information of the medium-frequency information is set on the side wall, and the low-frequency large-scale induction information is set on the side wall and extends to the top of the tunnel. Taking into account both safety and energy saving, while avoiding optical illusions and ensuring safety, it is especially suitable for short rural road tunnels (<500m) without electricity or lights.
Owner:WUHAN UNIV OF TECH

Anti-dazzle principle based design method for traffic engineering facilities at road tunnel exit

InactiveCN103557005AIncrease visual recognitionReduce glare areaProtective constructionTunnelsDriver/operatorLight energy
The invention relates to an anti-dazzle principle based design method for traffic engineering facilities at a road tunnel exit. The method is characterized in that tunnel exit anti-dazzle facilities are arranged in front of the tunnel exit to ease intensive brightness transition caused by insufficient illuminating lamps at the tunnel exit; coloured painting materials of which reflection coefficients gradually reduce are arranged on the tunnel ceiling, side walls and roads from the top down to ease brightness transition and beam divergence at the tunnel exit, so as to lift the dazzle area, reduce the dazzle area below the visual line of a driver and increase the visual adaptation time; horizontal road direction lines and road lane keeping lines are arranged on the road, and side wall vertical direction lines and side wall double-layered contour marks are arranged on the side walls, so as to form a closed mid-frequency retroreflective information stream together; high-frequency red and white marked lines arranged on maintenance road edges and road side reflective raised route markers form a high frequency visual information stream to increase the driver's instantaneous velocity sensation, and promote the driver's speed feeling and distance feeling, and accordingly, the coordination and unification of the tunnel lighting energy conservation and tunnel traffic safety are realized.
Owner:WUHAN UNIV OF TECH

Large-dynamic range Brillouin rapid measurement system based on multiple slope assistance

ActiveCN109724529AImprove signal-to-noise ratioIncreased Dynamic Range for Accurate MeasurementsUsing optical meansAudio power amplifierPhotovoltaic detectors
The invention provides a large-dynamic range Brillouin rapid measurement system based on multiple slope assistance. An output end of a laser is connected to an input end of a first coupler. A first output end of the first coupler is connected with an input end of the second coupler through a first modulator, a first optical amplifier and a filter in sequence. A first output end of the second coupler is connected with a first input end of a third coupler through a second modulator. A second output end of the second coupler is connected with a second input end of the third coupler through a third modulator. An output end of the third coupler is connected with a second end of a sensing optical fiber through an isolator. A second output end of the first coupler is connected with a first end ofa first circulator through a fourth modulator, a second optical amplifier and a scrambler in sequence. The first circulator is connected with a first end of the sensing optical fiber at a second end,and is connected with an input end of a photoelectric detector at a third end. An output end of the photoelectric detector is connected with a processor through an acquisition card. According to thelarge-dynamic range Brillouin rapid measurement system based on the multiple slope assistance, the dynamic range of accurate measurement can be improved.
Owner:成都塔科光电技术有限公司

Water engineering seepage behavior fusing and sensing system and method

Provided are a water engineering seepage behavior fusing and sensing system and method. The system comprises a seepage-hidden optical fiber locating device, a seepage flow velocity distributed optical fiber monitoring device, an online seepage line diagnosis device and a seepage behavior optical fiber self-adaptive identification device, the location of a water engineering seepage point is realized by using the seepage-hidden optical fiber locating device, then, the seepage flow velocity of a water engineering is monitored by virtue of the seepage flow velocity distributed optical fiber monitoring device, the online diagnosis of a seepage line on a section of a whole water engineering structure can be realized by using the online seepage line diagnosis device, and finally, the current seepage behavior is integrally monitored and evaluated by using the seepage behavior optical fiber self-adaptive identification device, so that the water engineering seepage behavior fusing and sensing is completed. The optical information change of the optical fiber is acquired from multiple aspects and angles by using the four water engineering seepage monitoring devices, depending on the material and mechanical properties of the water engineering and relying on a distributed optical fiber monitoring technology, and furthermore, the monitoring and sensing of a seepage behavior of a water engineering are indirectly completed.
Owner:HOHAI UNIV

Traffic safety facility for roundabout of rural-urban continuum and design method thereof

The invention provides a traffic safety facility for a roundabout of a rural-urban continuum and a design method of the traffic safety facility, aiming to improve the speed perception and the direction perception of a driver when the driver drives at the roundabout of the rural-urban continuum and improve the visual cognition capability of the driver to pedestrians crossing the street and barriers in a roundabout range. The facility comprises strip vertical face marker lines at the lower edge and the top of a roundabout annular-island curbstone; concrete separation piles are arranged between the outer side edge line of the roundabout annular-island curbstone and the outer side edge line of a road; concrete separation piles are arranged between the road side edge line of each road of the roundabout and a slope edge line; steel fixed separation piles and LED (Light Emitting Diode) lamp poles are arranged on pedestrian crosswalks and the lane edges at the sides of the roundabout, corresponding to the pedestrian crosswalks. The method adopts a low-cost road marker line and visual induction system and does not relate to a large-scale road infrastructure, so that the investment is small, the construction is easy and the effect is rapid to realize; the driving safety of the roads of the rural-urban continuum can be improved.
Owner:WUHAN UNIV OF TECH

Realizing device of large-capacitance self-healing optical fiber sensing network based on light spectrum type optical fiber sensor and realizing method

The invention provides a realizing device of a large-capacitance self-healing optical fiber sensing network based on a light spectrum type optical fiber sensor and a realizing method. The device comprises a light source, wherein the light transmitted from the light source sequentially passes through a coupler, n layers of sensing subnetworks, a wave length converter, a work optical fiber, a wavelength division multiplexer, an optical fiber, a receiving demodulator and a computer; and Maxn=the total energy of the light source / the energy required by each layer of sensing subnetwork. The invention is additively provided with a spare optical fiber and a cross connector in the network, thereby guaranteeing that the optical fiber sensing network can normally work when an optical fiber link goes wrong, so that the network has survivability. The number of sensors multiplexed by the sensing network is the sum of each layer of sensor, wherein, if each layer has k sensors, the number of the sensors is k*n. Maxk=the gross spectrum width of the light source / scanning resolution, thereby greatly expanding the capacitance of the sensing network. The light spectrum of the broadband light source is divided into m sections, Maxm=the gross spectrum width of the light source / the scanning resolution, the m sections are simultaneously scanned, and the scanning time can be shortened at the 1 / m of the original time, thereby improving the sensing speed of the sensing network.
Owner:TIANJIN UNIV

Expressway exit curved slope ramp sight line induction system

The invention relates to the technical field of traffic safety of expressways, in particular to an expressway exit curved slope ramp sight induction system, which is characterized in that corresponding first-stage, second-stage and third-stage sight induction systems are respectively arranged in road section areas with speed limits of 40km/h and below, 40-60km/h and 60km/h and above; the sight line induction system comprises a high-frequency rectangular attached delineator arranged at the bottom of the guardrail, a medium-frequency combined rectangular attached delineator arranged in the middle of the guardrail and a medium-frequency warning linear induction mark arranged on the outer side of the guardrail, and the high-frequency rectangular attached delineator, the medium-frequency combined rectangular attached delineator and the medium-frequency warning linear induction mark are graded according to different speeds. The round delineators, the rectangular attached delineators and thevisual reference columns are arranged on the inner sides and the upper portions of the guardrails, so that delineator induction of a curved slope section can be improved, the sensing capacity of a driver to a curve and a longitudinal slope is enhanced, the driver is effectively warned, and the starting section, the middle portion and the ending section of the ramp are each provided with an annularlight reflection structure. And a lane indicator is arranged below the annular reflective structure so as to ensure that a driver can discover within a decision sight distance.
Owner:WUHAN UNIV OF TECH
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