Summary of the invention
For convenience of narration, the individual name in this explanation, parameter symbol and correlationship are done to following introduction:
Traveling guidance method based on wireless time of arrival: refer to the traveling guidance method based on wireless signal transmission positioning system time of arrival;
Safety shut-down spacing: driving vehicle starts normal danger to the distance between parking spot under normal condition and state, in the reverse direction of vehicle driving direction, i.e. vehicle driving reverse direction; Considered rear selection according to driving speed limit, pavement behavior, the vehicle of travelling and set, as the Lr in accompanying drawing 6; Be to be all unsafe in the spacing situation down train and the brake that are less than this spacing, therefore, as forbidding travelling district or forbidden interval, signal lamp lamp shows for redlight district;
Safety guarantee spacing: be greater than safety shut-down distance, be less than a segment distance of safety distance, one section of interval after safety shut-down spacing, or reverse direction in vehicle driving direction, i.e. one section of interval after vehicle driving reverse direction, forbidden interval; Arranged according to minimum rate of traffic flow arrangement; As the Ly in accompanying drawing 6; Vehicle driving in this interval or brake are safe, but because it follows safety shut-down starting point closely, need to avoid spacing to be less than the situation appearance of safety shut-down spacing, and therefore interval as vehicle jogging district or jogging, signal lamp lamp shows for yellow-light-area;
Safety distance: be greater than safety guarantee spacing (from) section, after safety distance, or reverse direction in vehicle driving direction, i.e. vehicle driving reverse direction, jogging one section of interval after interval; Arranged according to minimum rate of traffic flow arrangement; As the Lg in accompanying drawing 6; In this is interval, vehicle can be exercised by normal mode, and therefore, as normally travel district, safety distance, signal lamp lamp shows for green zone;
Traveling guidance district: the interval that is greater than safety shut-down spacing, being considered rear selection according to driving speed limit, road surface, vehicle sets, also can be chosen under conventional haze state of weather everyday driver to the judgement distance of ground signal farthest, as the L in accompanying drawing 6; Under power-saving working mode in this interval cab signal machine and road surface teleseme according to the lamp display mode start signal lamp display working condition setting;
Lamp display mode: the color signal lamp being set and lighting mode: as color has red, yellow, and green, lighting mode has long bright, quick flashing, dodges slowly; In the time not considering power saving operation pattern, after selection lamp display mode is and sets color and lighting mode, turn on lights light display is shown;
Turn on lights is aobvious: signal lamp carries out light demonstration according to the lamp display mode of setting, and signal lamp shows work according to color and the lighting mode turn on lights light display set;
Vehicle position information code: the current driving direction, speed, place mileages of transport route and the place driveway that indicate this correspondence vehicle;
Driveway: the runway of dividing on road, can be numbered respectively driveway 1 or driveway 2 or driveway 3 or driveway 4 or driveway n to each driveway, with represent for driveway; Also can be defined as fast, runway, slow lane, Emergency Vehicle Lane, stopway;
Cab signal machine status code: the address code that contains this cab signal machine, the alignment code positioning for wireless location repeater station, the coding that represents the duty of this vehicle positioning teleseme, containing current power supply state code, direction of traffic and velocity information code, when the aobvious status code content of headlight;
Ground signal duty code: contain this ground signal address code, setting position code, power supply state code and corresponding to headlight display mode code;
Telecommunication transmission system: the telecommunication transmission system being formed by related wireless communication module, wire communication module, base station, repeater station and transmission cable, can be cable transmission network, wireless transmission net, WLAN (wireless local area network), optical fiber transmission network, WIFI transmission system, Zigbee transmission system, or mix for it telecommunication transmission system forming;
In view of reason and problem described in above background technology, the object of the present invention is to provide a kind of traveling guidance method and traveling guidance system, make under haze state of weather, can realize on highway pavement driveway operational vehicle is carried out to traveling guidance and vehicle approach spacing mark advance notice early warning, reach the object of auxiliary security driving and raising highway utilization factor, and there is convenient, the practical feature of implementing.
For achieving the above object, the present invention introduces a kind of traveling guidance method based on wireless time of arrival, include the traveling guidance system being formed by cab signal machine, wireless location repeater station, road surface teleseme, Intelligent road traffic mark board, center monitor, telecommunication transmission system, it is characterized in that described traveling guidance system equipment selection adopts following method of work:
(1) each cab signal machine collects coding by corresponding cab signal machine address code, positioning mark code and duty code and obtains each cab signal machine status code; And each cab signal machine sends cab signal machine status code corresponding to the machine to wireless location repeater station in real time;
(2) wireless location repeater station receives the cab signal machine status code that each cab signal machine sends, and wireless location repeater station calculates the positional information code of each corresponding cab signal machine according to the positioning mark yardage in the cab signal machine status code of receiving;
(3) wireless location repeater station is sent to other adjacent wireless location repeater stations by the positional information code of each cab signal machine by telecommunication transmission system; Wireless location repeater station is according to the positional information code of cab signal machine or the instruction of center monitor, and the positional information code and the associated lamp display mode that send each cab signal machine set command to each relevant road surface teleseme and cab signal machine;
(4) cab signal machine and road surface teleseme are set instruction according to the lamp display mode of the wireless location repeater station of receiving, select corresponding lamp display mode; Each cab signal machine is set instruction according to the lamp display mode of the wireless location repeater station of receiving, selects corresponding voice broadcast and lamp display mode; The lamp display mode of road surface teleseme and cab signal machine has red, yellow, and green, closes, grows bright and glittering working method; Travel in rightabout safety shut-down spacing, indicate lamp display mode that the road surface teleseme of same driveway and cab signal machine select for red in cab signal machine, this segment distance that indicates this driveway is forbidden interval; Travel in rightabout safety guarantee spacing, indicate lamp display mode that the road surface teleseme of same driveway and cab signal machine select for yellow in cab signal machine, this segment distance that indicates this driveway for jogging interval; Travel in rightabout safety distance, indicate lamp display mode that the road surface teleseme of same driveway and cab signal machine select for green in cab signal machine, this segment distance that indicates this driveway is safe driving interval;
(5) each cab signal machine and the road surface teleseme in each traveling guidance district, cab signal machine front show according to the positional information code of cab signal machine and according to the lamp display mode start signal lamp setting; The traffic light system content synchronization of the road surface teleseme in the voice broadcast of each cab signal machine and traffic light system and traveling guidance district, the machine front;
(6) traveling-position of each vehicle of correspondence that wireless location repeater station indicates according to the positional information code of each cab signal machine, is sent and opens or out code Intelligent road traffic mark board by telecommunication transmission system; Wireless location repeater station sends open command by telecommunication transmission system to the Intelligent road traffic mark board that has vehicle approach, and Intelligent road traffic mark board is opened road signs image according to the open command of receiving and shown; Wireless location repeater station sends out code by telecommunication transmission system near the Intelligent road traffic mark board that there is no vehicle, and Intelligent road traffic mark board is closed road signs image according to the out code of receiving and shown;
(7) each road surface teleseme is sent to wireless location repeater station by corresponding Intelligent road traffic mark board duty code by telecommunication transmission system by corresponding road surface teleseme duty code, each Intelligent road traffic mark board;
(8) wireless location repeater station is sent to adjacent wireless location repeater station and center monitor by the cab signal machine status code of each cab signal machine, the positional information code of cab signal machine and the duty code of each road surface teleseme by telecommunication transmission system; The cab signal machine status code of each cab signal machine that center monitor sends each wireless location repeater station and the duty code of each road surface teleseme are stored and are shown; Center monitor by parameters setting and steering order, lamp display mode set instruction, the aobvious open command of lamp sends to each road surface teleseme and cab signal machine to send to each road surface teleseme, cab signal machine and Intelligent road traffic mark board by telecommunication transmission system and wireless location repeater station; Road surface teleseme, cab signal machine and and Intelligent road traffic mark board according to the parameters setting of receiving and steering order, lamp display mode set instruction, the aobvious open command of lamp operates accordingly.
For realizing the above-mentioned traveling guidance method based on wireless time of arrival, the present invention introduces a kind of traveling guidance system, containing telecommunication transmission system, it is characterized in that having multiple cab signal machines, multiple wireless location repeater station, multiple road surfaces teleseme, multiple Intelligent road traffic mark boards, a center monitor, in each cab signal machine, there is a wireless communication module, displacement and speed pickup, one shows and speech alarm device, a microprocessing systems, wireless communication module wherein, displacement and speed pickup, job control end and the data input/output terminal of demonstration and speech alarm device are connected with control or the data input/output terminal of microprocessing systems respectively, in each wireless location repeater station, have a wireless communication module, a wire communication module, a satellite time service system, a microprocessing systems, job control end and the data input/output terminal of wireless communication module wherein, wire communication module, satellite time service system are connected with control or the data input/output terminal of microprocessing systems respectively, in the teleseme of each road surface, have a wireless communication module, a wire communication module, a cue light, a microprocessing systems, job control end and the data input/output terminal of wireless communication module wherein, wire communication module, cue light are connected with control or the data input/output terminal of microprocessing systems respectively, in each Intelligent road traffic mark board, there are a wireless communication module, a wire communication module, a colorful display screen, a microprocessing systems, wireless communication module wherein, wire communication module, the job control end of colorful display screen and data input/output terminal are connected with control or the data input/output terminal of microprocessing systems respectively, road surface teleseme is along each driveway center line spread configuration at a certain distance, or arrange along each driveway both sides, along each driveway separatrix and each driveway edge line spread configuration road surface teleseme at a certain distance, each road surface teleseme is along driveway setting, and each Intelligent road traffic mark board and wireless location repeater station are along identitypath setting, between each cab signal machine, road surface teleseme, wireless location repeater station, center monitor, interconnect by the telecommunication transmission system being formed by wireless communication module or wire communication module and transmission line, between each cab signal machine, road surface teleseme, wireless location repeater station, center monitor, interconnect by the telecommunication transmission system being formed by wireless communication module or wire communication module and transmission line.
Principle of work of the present invention is: each cab signal machine is arranged on corresponding vehicle, on each driveway center line of road surface or driveway separatrix and driveway edge line, each road surface teleseme is set at a certain distance continuously for indicating each driveway, wireless location repeater station is at regular intervals along identitypath setting, its range for wireless communication interlinks and covers all driveways of whole highway pavement, satellite time transfer module in wireless location repeater station provides high accuracy real-time clock for wireless location repeater station, for based on wireless time of arrival of localization method, monitoring by wireless location repeater station to the cab signal machine on each vehicle, obtain at any time the positional information of each driving vehicle on road, be that location mark code is sent in each cab signal machine timing, the timi requirement method that arrives each wireless location repeater station according to wireless signal transmission after multiple wireless location repeater station receives determines the positional information that each cab signal machine is corresponding vehicle, in positional information, include distance travelled, speed and residing driveway, by telecommunication transmission system, the vehicle position information of acquisition is transferred to each cab signal machine and road surface teleseme, cab signal machine and road surface teleseme are set lamp display mode and are opened and closed duty according to vehicle position information, the display mode of cab signal machine and road surface teleseme has indicated the current state of each road surface driveway, because road surface teleseme is arranged on road surface driveway center line or driveway separatrix or driveway edge line, and arrange continuously at a certain distance, therefore under haze weather, road surface teleseme can clearly indicate the trend on terrain vehicle trade in the time lighting work, because traffic light system color mode and the unlatching of road surface teleseme are shown as according to vehicle location determined, therefore can show and advance notice for vehicle provides the front driving spacing of place driveway, as: in the time that vehicle first is traveling in driveway n, on vehicle first is travelled a segment distance of rightabout driveway n, be dynamically divided into respectively forbidden interval, jogging is interval, safety traffic is interval, and the road surface teleseme indicating on this runway is selected to arrange corresponding red light lamp display mode, amber light lamp display mode, green light lamp display mode, and for the vehicle second that travel below and on same driveway n in vehicle first, if be in safety traffic interval in the front of vehicle second traveling guidance interval, road surface teleseme in Vehicular satellite positioning signal machine signal lamp and this traveling guidance district, mark runway n is shown in green, if the traveling guidance district, front of vehicle second includes, safety traffic is interval and jogging is interval, the signal lamp of Vehicular satellite positioning signal machine is that blue flash indicates, and voice sound prompting, be that Vehicular satellite positioning signal machine indicates that to be about to enter jogging interval, and in traveling guidance the district in, the interval and jogging of safety traffic interval in, the road surface teleseme difference of mark row track n is shown in green and yellow, if the traveling guidance district, front of vehicle second is interval for jogging, the signal lamp of Vehicular satellite positioning signal machine and road surface teleseme is yellow, and vehicle Bank B sails in jogging interval, if the traveling guidance district, front of vehicle second includes jogging interval and forbidden interval, the signal lamp of Vehicular satellite positioning signal machine is that yellow sudden strain of a muscle indicates, and voice sound prompting, be that Vehicular satellite positioning signal machine indicates and is about to enter forbidden interval, and in traveling guidance district, in the interval and forbidden interval of jogging, the road surface teleseme of mark row track n is shown as respectively yellow and redness, if the traveling guidance district, front of vehicle second is forbidden interval, the traffic light system of road surface teleseme in Vehicular satellite positioning signal machine and this traveling guidance district, mark runway n is red, and the prompting of Vehicular satellite positioning signal machine voice sound and alarm, vehicle Bank B sails in forbidden interval, so just realize the intelligent display function to terrain vehicle trade: both indicated the advance driveway trend in front of vehicle, also indicated the spaces of vehicles in corresponding driveway front, due to forbidden interval can be set as required, jogging is interval, the length in safety traffic interval and traveling guidance district, therefore can make driver in the distance away from front vehicles, just know the residing driveway of front vehicles and relative distance, can under haze weather condition, move towards to show and predict and early warning with the spacing of front vehicles for vehicle provides at driveway, vehicle driver is according to the demonstration of road surface teleseme, can recognize the trend of driveway and understand front vehicular gap, control timely and effectively vehicle operating direction and speed of operation, can ensure traffic safety, Intelligent road traffic mark board is according to the positional information of vehicle, determine whether to open or closing information demonstration, in the time having certain Intelligent road traffic mark board of vehicle approach, this Intelligent road traffic mark board is opened image and is shown, in the time there is no vehicle approach Intelligent road traffic mark board, this Intelligent road traffic mark board is closed image and is shown, can facilitate like this vehicle driver to understand in time the demonstration information of Intelligent road traffic mark board, and can reduce power consumption.
Embodiment
The explanation embodiments of the invention as an example of accompanying drawing example below:
The present embodiment is explained as objective for implementation taking the traveling guidance system that adopts wireless location system;
Fig. 1 is the traveling guidance system pie graph of one embodiment of the invention, wherein:
A1-An is road surface teleseme, road surface teleseme is along each driveway center line spread configuration at regular intervals, or arrange at regular intervals along each driveway both sides, along each driveway separatrix and each driveway edge line spread configuration road surface teleseme at regular intervals; B1-Bn is satnav calibration repeater station, and satnav calibration repeater station is at regular intervals along identitypath setting, and its range for wireless communication interlinks and covers all driveways of whole highway pavement; C1-Cn is cab signal machine, is arranged on the vehicle that enters highway pavement; D1-Dn is Intelligent road traffic mark board, along identitypath setting; Watch-dog centered by E, in road management central control room (CCR), adopts computer server and corresponding telecommunication transmission system, software to form; Between each Vehicular satellite positioning signal machine, road surface teleseme, satnav calibration repeater station, Intelligent road traffic mark board and center monitor, adopt corresponding telecommunication transmission system to be connected, and provide electric power supply by corresponding electric power system for each equipment;
Fig. 2 is the formation electrical schematic diagram of the road surface teleseme in the traveling guidance system of one embodiment of the invention; Wherein:
A1-An is road surface teleseme, and F1 is wherein wireless transport module, can adopt WIFI transport module, and F2 is microprocessor, can adopt Single Chip Microcomputer (SCM) system to form; F3 is wire transmission module, can adopt RS485 transport module and light delivery module to form, and F4 is signal lamp module, adopts LED display lamp and corresponding driving circuit; Job control end and the data input/output terminal of wireless communication module wherein, wire communication module, cue light are connected with control or the data input/output terminal of microprocessing systems respectively; On each driveway center line of road surface or driveway separatrix and driveway edge line, each road surface teleseme is set at a certain distance continuously, for indicating each driveway;
Fig. 3 is the formation electrical schematic diagram of the wireless location repeater station in the traveling guidance system of one embodiment of the invention; Wherein:
B1-Bn is wireless location repeater station, wherein: G1 is wireless transport module, can adopt WIFI transport module, G2 is microprocessor, can adopt Single Chip Microcomputer (SCM) system to form, and G3 is wire transmission module, can adopt RS485 transport module and light delivery module to form, G4 is satellite time transfer module; Job control end and the data input/output terminal of satellite time transfer module wherein, wireless communication module, wire communication module are connected with control or the data input/output terminal of microprocessing systems respectively;
Fig. 4 is the formation electrical schematic diagram of the cab signal machine in the traveling guidance system of one embodiment of the invention; Wherein:
C1-Cn is cab signal machine, wherein: H1 is wireless transport module, can adopt WIFI transport module; H2 is microprocessor, can adopt Single Chip Microcomputer (SCM) system to form; H3, for showing and speech alarm device, is made up of LED display module and speech report broadcasting module; H4 is displacement and speed pickup; The job control end of wireless communication module, displacement and speed pickup, demonstration and speech alarm device wherein and data input/output terminal are connected with control or the data input/output terminal of microprocessing systems respectively;
Fig. 5 is the formation electrical schematic diagram of the Intelligent road traffic mark board in the traveling guidance system of one embodiment of the invention; Wherein: D1-Dn is Intelligent road traffic mark board, wherein: I1 is wireless transport module, can adopt WIFI transport module, I2 is microprocessor, can adopt Single Chip Microcomputer (SCM) system to form, I3 is wire communication module, can adopt RS485 transport module and light delivery module to form; I4 is colorful display screen, is made up of color LED display module; Job control end and the data input/output terminal of wireless communication module wherein, wire communication module, colorful display screen are connected with control or the data input/output terminal of microprocessing systems respectively; Each Intelligent road traffic mark board is along identitypath setting;
Between each cab signal machine, road surface teleseme, Intelligent road traffic mark board, wireless location repeater station, center monitor, interconnect by the telecommunication transmission system being formed by wireless communication module or wire communication module and transmission line;
The annexation indicating according to above-mentioned explanation and accompanying drawing is connected all parts, module, and can realize and complete embodiments of the invention to each microprocessor according to described method of work authorized strength work software.
The present invention has introduced a kind of by wireless location repeater station, cab signal machine, road surface teleseme, Intelligent road traffic mark board, center monitor, the traveling guidance method based on wireless time of arrival that the traveling guidance system of telecommunication transmission system composition realizes, under haze state of weather, can realize on highway pavement driveway operational vehicle is carried out to traveling guidance and the advance notice of vehicle approach spacing mark, driving vehicle is sent to a distant place in time and show early warning, avoid accidents caused, reach the object of auxiliary security driving and raising highway utilization factor, and have and implement conveniently, practical feature.