44results about How to "Solve traffic accidents" patented technology

The invention discloses an automatic automobile fog light, distant light, dipped headlight, danger warning light and emergency rescue control system which comprises a microcontroller. The microcontroller is connected with a light sensor, a humidity sensor, a dust sensor, a GSM (global system for mobile communication) communication module, an automobile lamp control relay, a buzzer, a liquid crystal display screen, an SD (secure digital) card and a camera respectively. Automatic opening and switching of a fog light, distant light and dipped headlight are realized on the basis of the microcontroller through the light sensor, the humidity sensor and the dust sensor, and an emergency rescue system is triggered through the GSM communication module, so that the problems of easiness to cause traffic accidents due to untimeliness in light opening and switching and rescue delaying caused by the fact that an automobile is in an accident suddenly are solved. The automatic automobile fog light, distant light, dipped headlight, danger warning light and emergency rescue control system is simple in structure and convenient in use, operation of a driver is reduced, and traveling safety is guaranteed.

The invention provides an inter-vehicle communication method and device, used for solving the problem that a traffic accident happens easily due to the fact that the communication performance of a dedicated short-range communication DSRC technology can be suddenly decreased possibly when vehicle nodes in a congestion road section is relatively dense. The method disclosed by the invention comprises the following steps of: obtaining driving information of a target vehicle in the road, wherein the driving information includes the number of adjacent vehicles of the target vehicle and / or the communication quality parameters of the target vehicle and the adjacent vehicles; and a data transmission channel between the target vehicle and the adjacent vehicle is established through a vehicular Ad Hoc network; and, if determining that the road, in which the target vehicle is, is the congestion road section according to the driving information of the target vehicle, switching the data transmission channel between the target vehicle and the adjacent vehicles into the data transmission channel between the target vehicle and the adjacent vehicles established by a mobile communication system. When the communication performance of the DSRC is relatively poor, DSRC communication resources are preferentially distributed to vehicles having relatively rapid speeds; and thus, the problem that the communication performance of the DSRC in the congestion road section is poor can be solved.

The invention provides a turning car flow organizing method and device and an electronic device, and relates to the technical field of intelligent traffic. The method includes the steps of setting a turning car flow exclusive way at a plane intersection according to a turning car flow exclusive way optimizing algorithm, canalizing the plane intersection according to a turning car flow canalizing algorithm, and conducting signal phase configuring on the plane intersection according to a turning car flow signal phase optimizing algorithm. By means of the turning car flow organizing method and device and the electronic device, the problems that an existing plane intersection is not reasonable in turning car flow distribution, the traffic capacity of the plane intersection is influenced and then traffic accidents and traffic jam are caused are solved.

Disclosed is a fatigue driving monitoring system based on an electroencephalogram signal, an electronystagmogramsignal and an electromyogram signal, and relates to the technical field of safety driving monitoring of automobiles. The system comprises a signal collecting module, a signal processing module, a driving state judging module and an alarming module; the signal collecting module is used for collecting the electroencephalogram signal, the electronystagmogramsignal and the electromyogram signal separately; the signal processing module is used for processing the electroencephalogram signal, the electronystagmogramsignal and the electromyogram signal which are collected by the signal collecting module, processing and analyzing a collected original electroencephalogram signal, electronystagmogramsignal and electromyogram signal, and conducting comparison with the driving state of a driver in a normal state to obtain a fatigue driving threshold value; the driving state judging moduleis used for judging the driving state of the driver according to the fatigue driving threshold value; the alarming module gives an alarm for reminding when it is judged that the driver is in a fatigue driving state. By means of the system, with the normal driving state of the driver as a judgment criterion, the driving safety of the driver can be effectively improved, and the occurrence of traffic accidents is reduced.

The invention discloses a vehicle position information prompting method, device and equipment, and particularly discloses the following steps: acquiring driving state information of a target vehicle and change rule information of traffic lights of an intersection to be passed by the target vehicle; according to the driving state information and the change rule information of the target vehicle, predicting position information of the target vehicle when the traffic signal lamp is in different lighting states; and prompting the user based on the position information, so that the user can make adecision of accelerating, decelerating or keeping the existing driving speed in advance, and traffic jam or traffic accidents are avoided.

The invention discloses a non-motor vehicle and pedestrian channelization special way system for an intersection in the technical field of traffic. The non-motor vehicle and pedestrian channelizationspecial way system comprises non-motor vehicle and pedestrian channelization special ways, isolation islands, waiting zones, traffic restriction pillars, non-motor vehicle lanes, pedestrian crossings,non-motor vehicle and pedestrian traffic lights, motor vehicle right-turn lanes and motor vehicle lanes. The system fully considers the problem that motor vehicles, especially trucks, collide againstnon-motor vehicles and pedestrians due to visual blind zones when turning right to cause an accident; when passing the intersection, motor vehicles pass inside the intersection, and non-motor vehicles and pedestrians pass inside the non-motor vehicle and pedestrian channelization special ways; and when the non-motor vehicles and pedestrians cross the road at the pedestrian crossings, the motor vehicles have already turned right, and the traffic situations of forward non-motor vehicles and pedestrians can be seen to guarantee that motor vehicles cannot cause the accident due to the visual blind zones.

The invention belongs to the field of road construction and particularly relates to a construction method for an antifreeze road body. The construction method comprises the following steps that 1, power-on test is conducted on heating cables to be laid before the heating cables to be laid enter a field, whether the heating cables work normally is detected, and the road face base layer is leveled and cleaned; 2, a damp-proof layer is laid; 3, a heat insulation layer and a reflection layer are laid; 4, a heat dissipation layer is laid; 5, a heating cable layer is laid; 6, a temperature sensing probe is arranged; 7, a road face cushion layer is laid; and 8, a road surface layer is laid. The problem of road face freezing is solved thoroughly, the road face is heated before the road face freezes, the performance of the road body is improved while it is ensured that the road face does not freeze, and the situation that the road face freezes to affect the performance of the road body and shorten the service life of the road body is prevented. The service life of the road body can be prolonged through the design of the road body, and safety of the road face is improved.

The invention belongs to the field of roads, and particularly relates to an anti-freezing road capable of preventing icing in cold days. The anti-freezing road comprises a moistureproof layer, a heat insulating layer, a heat-generating cable layer, a road cushion layer and a road layer which are laid on a road base layer sequentially from bottom to top, the road base layer is leveled and cleaned, the heat insulating layer prevents heat from being transmitted and lost downwards, the road cushion layer fixes and protects the heat-generating cable layer, a uniform heat allowance protecting gap is arranged between the edge of the heat-generating cable layer and the edge of the heat insulating layer, the heat-generating cable layer comprises heat-generating cables arranged on the heat insulating layer, temperature sensing probes are arranged among the heat-generating cables, and uniform heat gaps are reserved between the temperature sensing probes and the heat-generating cables. By the anti-freezing road, the problem of road icing is solved thoroughly, and a road is heated before icing of the road, so that the road is ensured not to ice while performance of the road is improved, and influence on road performance and shortening of service life of the road due to road freezing are prevented. By the designing mode, service life of the road can be prolonged, and safety of the road can be improved.

The invention discloses a target detection method and device for a vehicle blind area and electronic equipment. The target detection method comprises the steps of obtaining a target image; calibratinga corresponding detection area in the target image according to a preset vehicle blind area; detecting a target object in the target image by using a deep learning model to obtain position information of the target object; judging whether the target object exists in the detection area or not based on the position information of the target object; and under the condition that the target object exists in the detection area, sending alarm information. According to the invention, the automatic monitoring of the target object in the blind area of the vehicle can be realized, and when the target object exists in the detection area corresponding to the blind area of the vehicle, an alarm prompt is sent out to assist a driver in discovering potential dangers in time in the driving process such that traffic accidents caused by the distraction of the driver viewing videos are reduced.

The invention discloses a method, a device and equipment for synchronously displaying associated information of a vehicle-mounted terminal. The method specifically comprises the following steps: acquiring in-vehicle seat setting information of a current vehicle; determining each corresponding synchronous display screen for synchronously displaying associated information associated with the currentvehicle driving state according to the in-vehicle seat setting information; displaying the associated information synchronously on the synchronous display screens, so that drivers or passengers in the current vehicle and on the seats in the vehicle provided with the synchronous display screens can synchronously acquire the associated information associated with the current vehicle driving state in real time, and the user experience is improved.

The invention relates to the field of switching of automatic driving and manual driving, in particular to a control system and method for switching an automatic driving mode into a manual driving mode. A micro-vibration motor and a vibration sensor used for monitoring the vibration frequency of a steering wheel are installed in a center console of the steering wheel, and the driving mode of the vehicle is controlled by monitoring the vibration frequency of the steering wheel in real time in the automatic driving mode. According to the system and the method, the automatic driving mode is switched into the manual driving mode through the steering wheel, and the hidden danger that traffic accidents are easily generated by a traditional method for realizing mode switching through stepping on apedal is solved.

The invention relates to a highway high-speed rail transit system. The highway high-speed rail transit system includes a lane and a vehicle-mounted driving controller; a plurality of pilotage track spikes which are arranged at intervals are arranged on the center line of the lane; two sides of the lane are both provided with navigation track spikes; the distances between the navigation track spikes at the two sides of the lane and the center line of the lane are equal; and the vehicle-mounted driving controller is connected with a steering gear box and an electronic control unit of a vehicle through a CAN bus, and receives radio signals fed back by the pilotage track spikes and the navigation track spikes at the two sides of the lane, and analyzes the magnitude of the field intensity of the radio signals of the pilotage track spikes and the navigation track spikes at the two sides of the lane. With the highway high-speed rail transit system of the invention adopted, the single wheeltrack type mechanical principle of existing highway railway track rail transit and urban rail transit can be changed fundamentally; tracks are replaced by semiconductor chips; high-speed travelling of common vehicles according to rail transit can be realized; vehicles on electronic highway tracks can leave the electronic highway tracks to stop at stations, and can be marshaled to enter the tracks; and therefore, electronic highway rails have higher efficiency than wheeltrack tracks do.

The embodiment of the invention provides a non-motor vehicle avoidance method and device in vehicle driving, a vehicle and a storage medium. The method comprises the following steps: acquiring a soundsignal and an image signal of the vehicle in a driving environment; determining sound feature information and image feature information in the driving environment based on the sound signal and the image signal; judging whether a non-motor vehicle exists or not according to the sound feature information and the image feature information; and when it is determined that the vehicle currently meets the non-motor vehicle avoidance condition according to the judgment result, outputting an avoidance signal to remind and / or control the vehicle to avoid the non-motor vehicle. Whether non-motor vehicles exist on a road or not is judged by acquiring a sound signal and an image signal in a vehicle driving environment; and under the condition of meeting the non-motor vehicle avoidance signal, an avoidance signal is output to remind or control the vehicle to avoid the non-motor vehicle, so that the problem of traffic accidents caused by untimely avoidance of the non-motor vehicle in the vehicle driving process is solved, and the driving safety is improved.

The embodiment of the invention discloses a pre-pressurization control method and device, a vehicle and a storage medium. The method comprises the following steps: acquiring sound information, and determining a sound recognition result according to the sound information; if the voice recognition result is that recognition succeeds, acquiring the vehicle state; and when the vehicle state meets a control condition, determining pre-pressurization control information, and controlling a vehicle braking system to conduct pre-pressurization according to the pre-pressurization control information. According to the technical scheme, the braking system can be pressurized in advance when a driver difficultly judges whether braking is needed or not, the vehicle braking system is controlled through sound to conduct pre-pressurization instead of directly controlling the braking system to conduct braking, and a problem that when a vehicle conducts braking judgment only through sound to generate misjudgment, traffic accidents are easily caused due to direct braking is solved, a revocation space is provided for an instruction generated due to misjudgment, the braking time and the braking distance are shortened, and the safety of vehicle driving is improved.

The invention discloses a dual-layer glass fiber concrete pavement structure applicable to city roads. The pavement structure comprises a basic layer which is divided into an upper basic layer body and a lower basic layer body; the upper basic layer body is made from lean concrete; the lower basic layer body is made from cement stabilized crushed stone; a cement concrete face layer is laid on the basic layer, and a graded broken stone cushion layer is laid on the lower side of the basic layer; the cement concrete face layer is provided with dual-layer continuous glass fiber ribs and a supporting base, the dual-layer continuous glass fiber ribs are composed of upper-layer continuous longitudinal glass fiber ribs, lower-layer continuous transverse glass fiber ribs and lower-layer continuous longitudinal glass fiber ribs; transverse joints are arranged on the face layer at the interval of 150 m, and a pre-cut seam transversely penetrating a well cover is arranged on the well cover of the face layer; an emulsified asphalt slurry seal modified by styrene butadiene rubber latex is arranged between the upper basic layer body and the lower basic layer body; the basic layer and the face layer are provided with 2-3% road arch cross slopes. The pavement structure can effectively solve the problem that because a water system in a city road is rich or water drainage is not smooth, a pavement structure is seriously damaged in the early stage.

The invention discloses a vehicle automatic braking method and device. The method includes the steps that an acquisition device acquires first traveling data of a vehicle; whether the first travelingdata trigger a preset braking condition or not is monitored; if it is monitored that the first traveling data trigger the preset braking condition, a control device sends a first braking control signal to a vehicle braking system, and preset braking operation is executed on the vehicle through the vehicle braking system; and the mode that the acquisition device is arranged to acquire the travelingdata in the vehicle traveling process is adopted, whether the traveling data trigger the preset braking condition or not is monitored, so that the purposes that the control device sends the braking control signal to the vehicle braking system, and the preset braking operation is executed on the vehicle through the vehicle braking system are achieved, the technical effect that the vehicle is automatically braked under a specific condition is achieved, and therefore the problem that a vehicle driver cannot conduct braking in time and thus a traffic accident happens is solved.

The invention belongs to the field of roads, and particularly relates to a novel road body structure. The structure comprises a damp-proof layer, a heat insulation layer, a heating cable layer, a pavement cushion layer and a pavement layer. The damp-proof layer, the heat insulation layer, the heating cable layer, the pavement cushion layer and the pavement layer are sequentially laid on a leveled and cleaned pavement foundation layer from bottom to top. The heat insulation layer prevents heat from conducting and being lost downwards, and the pavement cushion layer and the pavement layer are used for fixing and protecting the heating cable layer. The heating cable layer comprises multiple evenly distributed heating areas, and multiple parallel heating cables are connected in parallel on the heating areas. Heat uniforming and friction increasing gaps are formed between adjacent heating cables. Reinforcing and fixing gaps are reserved between adjacent heating areas. A temperature sensing probe is arranged between at least one pair of adjacent heating cables of each heating area. Heat uniforming gaps are reserved between the temperature sensing probes and the heating cables. The structure completely solves the pavement freezing problem, a pavement is heated before the pavement is frozen, and it is guaranteed that the pavement can not be frozen; meanwhile, the performance of a road body is improved, and the situation that road body performance is affected and the service life of the road body is shortened due to pavement freezing is prevented.

The invention belongs to the field of road construction, and particularly relates to a road body construction method with a cold preventing function. The road body construction method comprises the following steps: 1, conducting a power-on test on heating cables to be paved before approach; 2, paving a damp-proof layer; 3, paving a heat insulating layer and a reflecting layer; 4, paving a heat dissipation layer; 5, paving a heating cable layer; 6, punching the reflecting layer, the heat insulating layer and the damp-proof layer: punching the reflecting layer, the heat insulating layer and the damp-proof layer from top to bottom corresponding to the clearances of the well distributed heating cables to form clearance cylindrical holes; 7, arranging temperature sensing probes: arranging hard sleeves among the paved heating cables, fixing the hard sleeves, arranging the temperature sensing probes in the hard sleeves, and electrically connecting the temperature sensing probes with a temperature controller outside the road body, and then blocking the ends, away from the edge of the road body, of the hard sleeves; 8, paving a road surface cushion layer; 9, paving a road surface layer. Through the adoption of the road body construction method, not only can road surface icing be avoided, but also the performance of the road body can be improved.

The invention discloses a transplanting method of an image defogging algorithm based on dark channel prior, and belongs to the field of image defogging processing. In an existing image defogging algorithm based on dark channel prior, guiding filtering used when a light propagation graph is refined is too complex, and the algorithm is too complex. The method comprises the following steps: acquiring a color fog image with R, G and B channels as an input image, and inputting the input image to an FPGA (Field Programmable Gate Array) by adopting CameraLink; and performing normalization; calculating an atmospheric light value and transmissivity, carrying out inversion operation in the simplified foggy day image imaging model, recovering to obtain three channels R, G and B of the defogged image, and using t0 to limit the lower limit of a light propagation graph of the points; further refining the transmissivity, and recovering a fogless image; caching the intermediate result by adopting the DDRSDRAM; and adopting the DVI signal generated by the CH7301C to output a defogged video. According to the method, transplantation of the improved dark channel prior image defogging algorithm is realized in the FPGA, and the method has the advantage of simple calculation process.

The invention discloses a dual-layer glass fiber concrete pavement structure applicable to city roads. The pavement structure comprises a basic layer which is divided into an upper basic layer body and a lower basic layer body; the upper basic layer body is made from lean concrete; the lower basic layer body is made from cement stabilized crushed stone; a cement concrete face layer is laid on the basic layer, and a graded broken stone cushion layer is laid on the lower side of the basic layer; the cement concrete face layer is provided with dual-layer continuous glass fiber ribs and a supporting base, the dual-layer continuous glass fiber ribs are composed of upper-layer continuous longitudinal glass fiber ribs, lower-layer continuous transverse glass fiber ribs and lower-layer continuous longitudinal glass fiber ribs; transverse joints are arranged on the face layer at the interval of 150 m, and a pre-cut seam transversely penetrating a well cover is arranged on the well cover of the face layer; an emulsified asphalt slurry seal modified by styrene butadiene rubber latex is arranged between the upper basic layer body and the lower basic layer body; the basic layer and the face layer are provided with 2-3% road arch cross slopes. The pavement structure can effectively solve the problem that because a water system in a city road is rich or water drainage is not smooth, a pavement structure is seriously damaged in the early stage.

The invention provides an air transportation system. A plurality of vertical steel brackets are fixedly mounted on existing expressways, highways or ordinary highways between cities, between the cities and towns or between the towns in the road directions in a spaced manner; a cross beam is fixedly mounted on a bracket body of the single vertical steel bracket; steel rails are arranged between twoadjacent vertical steel brackets; one end of the steel rail is fixedly connected with the cross beam of one vertical steel bracket; the other end of the steel rail is fixedly connected with the crossbeam of the other vertical steel bracket; the two adjacent steel rails and the vertical steel brackets are fixedly connected with each other through stay cables; compartments are hoisted on the steelrails; traction mechanisms matched with the steel rails are arranged at the top ends of the compartments; the compartments can move in the length directions of the steel rails by using the traction mechanisms under the effect of electric traction to form air rail transit lines between the cities, between the cities and the towns or between the towns.

The invention belongs to the field of roads, and particularly relates to a novel anti-freezing pavement. The pavement comprises a damp-proof layer, a heat insulation layer, a heating cable layer, a pavement cushion layer and a pavement layer. The damp-proof layer, the heat insulation layer, the heating cable layer, the pavement cushion layer and the pavement layer are sequentially laid on a leveled and cleaned pavement foundation layer from bottom to top. The heat insulation layer prevents heat from conducting and being lost downwards, and the pavement cushion layer and the pavement layer are used for fixing and protecting the heating cable layer. The heating cable layer comprises multiple evenly distributed heating areas, and each heating area is formed in the mode that at least one heating cable is distributed on the heat insulation layer. Reinforcing and fixing gaps are reserved between adjacent heating areas. A temperature sensing probe is arranged between the heating cables of each heating area. Heat uniforming gaps are reserved between the temperature sensing probes and the heating cables. A cooling layer used for evenly dispersing heat generated by the heating cable layer is further disposed between the heating cable layer and the heat insulation layer. The structure completely solves the pavement freezing problem, a pavement is heated before the pavement is frozen, and it is guaranteed that the pavement can not be frozen; meanwhile, the performance of a road body is improved, and the situation that road performance is affected and the service life of the road body is shortened due to pavement freezing is prevented.

The invention belongs to the field of road construction and particularly relates to a construction method for an antifreeze road body. The construction method for the antifreeze road body comprises the following steps that 1, power-on test is conducted on heating cables to be laid before the heating cables to be laid enter a field, whether the heating cables work normally is detected, and the road face base layer is leveled and cleaned; 2, a damp-proof layer is laid; 3, a heat insulation layer and a reflection layer are laid; 4, a heat dissipation layer is laid; 5, a heating cable layer is laid; 6, a temperature sensing probe is arranged; 7, a road face cushion layer is laid; and 8, a road surface layer is laid. The problem of road face freezing is solved thoroughly, the road face is heated before the road face freezes, the performance of the road body is improved while it is ensured that the road face does not freeze, and the situation that the road face freezes to affect the performance of the road body and shorten the service life of the road body is prevented. The service life of the road body can be prolonged through the design of the road body, and safety of the road face is improved.

The invention relates to an LED illumination device in the field of illumination facilities. The LED illumination device specifically comprises a lamp box, a condensation and remote transmission device and an LED device, wherein the lamp box has a space and a size suitable for mounting illumination elements; the condensation and remote transmission device is arranged in a middle cavity of the lampbox and used for condensing and enhancing incident light and then emitting light for illumination, and the condensation and remote transmission device can emit non-dispersed light after condensing and enhancing the incident light; the LED device is arranged in the lamp box, is adjacent to the condensation and remote transmission device to provide an incident light source for the condensation andremote transmission device, and is used for providing a light source and the incident light; and meanwhile, the structural design of the lamp box meets the requirement for mounting the condensation and remote transmission device and the LED device in the lamp box according to specific structural compositions and positional relations. The LED illumination device is reasonable in design, compact instructure, easy to mount, capable of improving the brightness and the remote-transmission effect and high in adaptability and has wide application prospects in tunnel traffic and night traffic illumination and night operation of equipment.

The invention provides an inter-vehicle communication method and device, used for solving the problem that a traffic accident happens easily due to the fact that the communication performance of a dedicated short-range communication DSRC technology can be suddenly decreased possibly when vehicle nodes in a congestion road section is relatively dense. The method disclosed by the invention comprises the following steps of: obtaining driving information of a target vehicle in the road, wherein the driving information includes the number of adjacent vehicles of the target vehicle and / or the communication quality parameters of the target vehicle and the adjacent vehicles; and a data transmission channel between the target vehicle and the adjacent vehicle is established through a vehicular Ad Hoc network; and, if determining that the road, in which the target vehicle is, is the congestion road section according to the driving information of the target vehicle, switching the data transmission channel between the target vehicle and the adjacent vehicles into the data transmission channel between the target vehicle and the adjacent vehicles established by a mobile communication system. When the communication performance of the DSRC is relatively poor, DSRC communication resources are preferentially distributed to vehicles having relatively rapid speeds; and thus, the problem that the communication performance of the DSRC in the congestion road section is poor can be solved.

The invention relates to a new type of civilized driving detection and recording system, which belongs to the technical field of civilized transportation. It specifically provides a GPRS module to realize direct communication between adjacent street lamps and detects the situation in front of the street lamps through the camera to judge whether the driver is conscious or not according to the fixed distance between the street lamps. When there is an object at a distance of 150m, the function of switching the high and low beam lights for civilized driving consists of an alarm, a street lamp housing, an image processing module, a processor, a GPRS module, a rectifier and voltage regulator module, a camera, a street lamp, a photosensitive sensor, a memory, a speedometer, The plug constitutes. It solves the problem that people tend to forget the essentials of civilized driving in daily travel, which leads to some traffic accidents, and has the characteristics of accuracy and real-time performance.

The invention belongs to the field of roads and specifically relates to a road body with an anti-cold anti-freezing function. The road body comprises a damp-proof layer, a heat insulating layer, a heating cable layer, a pavement bed course and a pavement layer which are laid on a leveled and cleaned pavement base course successively from bottom to top, wherein the heat insulating layer is used for preventing downward transfer and loss of heat, and the pavement bed course is used for fixing and protecting the heating cable layer. The heating cable layer comprises multiple uniformly-distributed heating areas. There is a reinforcing fixing gap between two adjacent heating areas. A heating unit formed by cross arrangement of heating cables is at least arranged in each heating area. Each heating unit comprises four uniform heat areas formed by heating cable crossing. A temperature-sensing probe is arranged in at least one uniform heat area in each heating unit. According to the application, the icy pavement problem is thoroughly solved. By heating a pavement before the pavement is frozen, it is guaranteed that the pavement will not be frozen. Meanwhile, performance of the road body is raised, and the problem that performance of the road body is influenced and service life of the road body is shortened due to icing of the pavement is prevented.

The invention belongs to the field of road construction, and particularly relates to a road body construction method with a cold preventing function. The road body construction method comprises the following steps: 1, conducting a power-on test on heating cables to be paved before approach; 2, paving a damp-proof layer; 3, paving a heat insulating layer and a reflecting layer; 4, paving a heat dissipation layer; 5, paving a heating cable layer; 6, punching the reflecting layer, the heat insulating layer and the damp-proof layer: punching the reflecting layer, the heat insulating layer and the damp-proof layer from top to bottom corresponding to the clearances of the well distributed heating cables to form clearance cylindrical holes; 7, arranging temperature sensing probes: arranging hard sleeves among the paved heating cables, fixing the hard sleeves, arranging the temperature sensing probes in the hard sleeves, and electrically connecting the temperature sensing probes with a temperature controller outside the road body, and then blocking the ends, away from the edge of the road body, of the hard sleeves; 8, paving a road surface cushion layer; 9, paving a road surface layer. Through the adoption of the road body construction method, not only can road surface icing be avoided, but also the performance of the road body can be improved.

The present invention provides a traffic early warning method and system based on GPS. The method includes: periodically acquiring the position information of the first target and the second target; calculating the distance between the first target and the second target according to the acquired position information The actual distance between; compare the actual distance with the preset distance threshold, if the actual distance is not greater than the preset distance threshold, it is judged that the first target and the second target are within the preset Whether there is a possibility of collision within the distance threshold radius; if there is a possibility of collision, an early warning signal is sent to the first target and the second target; if there is no possibility of collision, no early warning signal is sent. The present invention further judges whether to send an early warning signal to remind both parties to pay attention to slow down or avoid by judging whether the routes of the two parties may collide when people and vehicles, or vehicles and vehicles approach each other, so as to achieve the purpose of safe travel.

The invention discloses a multi-way valve, a pneumatic braking system and a vehicle. The pneumatic braking system comprises the multi-way valve, and the vehicle comprises the pneumatic braking system. The multi-way valve comprises a first input branch and at least two output branches communicated with the first input branch, at least one output branch is internally provided with a one-way valve so that fluid in the output branch can be stopped from reversely flowing. Therefore, the fluid in the output branch with the one-way valve can be prevented from reversely flowing, and fluid in a loop communicated with the output branch can be prevented from reversely flowing to the first input branch and other output branches. For instance, the pressure in the loop communicated with the output branch with the one-way valve can be prevented from dropping, and therefore traffic accidents caused by false operation of parking braking are prevented.