CN203741744U - Solar geomagnetic induction road sign and vehicle dynamic state trail display system - Google Patents
Solar geomagnetic induction road sign and vehicle dynamic state trail display system Download PDFInfo
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- CN203741744U CN203741744U CN201420048553.XU CN201420048553U CN203741744U CN 203741744 U CN203741744 U CN 203741744U CN 201420048553 U CN201420048553 U CN 201420048553U CN 203741744 U CN203741744 U CN 203741744U
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Abstract
A solar geomagnetic induction road sign comprises at least one geomagnetic sensor, a luminophor, a processor and a power module. The processor is connected with the geomagnetic sensor and the luminophor, the power module provides electric energy for other modules in the solar geomagnetic induction road sign, the geomagnetic sensor can detect geomagnetic disturbance caused by passing vehicles and output a detection result to the processor, and the processor lights the luminophor for a while when the fact that the vehicles pass through the position where the solar geomagnetic induction road sign is located is determined. According to the solar geomagnetic induction road sign, instant passing of the vehicles on each lane can be effectively detected, occupation of the lanes can be effectively marked, and therefore the running trails of the vehicles can be displayed according to the lanes under the low-visibility environment, effective guidance and warnings can be provided for rear passing vehicles, and then traffic accidents under the low-visibility environment are effectively avoided.
Description
Technical field
The utility model relates to a kind of track that adopts solar energy earth induction road sign and takies warning technology, particularly a kind of under low visibility environment active illuminating dynamically show solar energy earth induction road sign and the corresponding vehicle dynamic tail display system of Vehicle Driving Cycle tail.
Background technology
The weather such as rain, snow, mist, haze can reduce the visibility of atmosphere, in the time that vehicle travels under low visibility environment, because of long sight observability extreme difference, cause Safety Pre apparent distance deficiency, whether track, front has car to be difficult to be found in time, especially while having mist, more easily because sight line tomography causes vehicle rear-end collision, especially easily there is particularly serious traffic accident.
According to statistics, split because of evils such as thick fogs the traffic accident that weather effect causes and account for more than 1/4 of sum, caused great loss to the country and people's lives and properties.But, at present road management department conventionally by artificial envelope road, no through traffic or restriction is current etc., and mode reduces the possibility that accident occurs as much as possible, but because the scene of terrible weather has uncertainty, often cannot be in time, exactly the road of all needs is taken measures, meanwhile, because road closure is forbidden, not only can cause transportation route to interrupt, make troubles to people's trip, also can cause road service loss.
Chinese invention patent application CN201310474405.4 has proposed a kind of Vehicle Driving Cycle tail technology of trackside, providing a kind of installs with corresponding for front vehicle provides the method for information warning according to the travel conditions of front vehicles, but in the time that track quantity is greater than two tracks, the warning directive property of this technology and validity all decline to some extent in practice.
By the end of so far, in road traffic environment, also do not have a kind of technology to show Vehicle Driving Cycle tail by track.From Road Development trend, under low visibility environment, track is taken identify, for traffick provide warning be a kind of effective accident-prevention measures.
In addition, the road sign that utilizes solar energy or alternate manner power supply existing at present, is mainly for realizing the linear induction to road, cannot be to providing in real time information warning according to the travel situations of vehicle on track.
Therefore, be necessary in fact to design a kind of height integrated-type, can for each lane detection vehicle instantaneous by and the integrated prior-warning device of warning accordingly, and the vehicle dynamic tail display system that can take corresponding control strategy to warn for the variation of meteorological condition.
Utility model content
Technical problem to be solved in the utility model is: overcome in prior art road under low visibility environment and take the difficult problem that cannot accurately warn, realize and show that in real time whether track is occupied and warn accordingly according to track, thereby vehicle is effectively guided.
For addressing the above problem, the utility model provides a kind of solar energy earth induction road sign, it comprises at least one geomagnetic sensor, luminous body, processor and power module, described processor is connected with described geomagnetic sensor and described luminous body, described power module provides electric energy for other module in described solar energy earth induction road sign, described geomagnetic sensor can detect that vehicle is through the out-of-date terrestrial magnetic disturbance causing, and to processor output detections result, described processor is lighted described luminous body continue for some time through out-of-date from the position at described solar energy earth induction road sign place defining vehicle.
Preferably, described solar energy earth induction road sign further comprises communication module, and described communication module is connected with described processor, and described communication module is for outwards transmitting data and receiving extraneous control instruction.
Preferably, described communication module is wireless communication module, and further comprises antenna and wireless module.
Preferably, described power module comprises solar cell and battery, and described solar cell can utilize solar energy for charge in batteries.
Preferably, described power module further comprises for electrical selector and disposable battery, described confession electrical selector is connected with described battery and described disposable battery, and is determined and exported from the electric energy of described battery, still the electric energy from both exported from the electric energy of disposable battery simultaneously by both voltage of comparison.
Preferably, the described electrical selector that supplies further comprises A/D module, for identifying the voltage of the voltage of described battery, described disposable battery and current power supply mode, and the result of identification is exported by described communication module.
Preferably, described solar energy earth induction road sign also comprises pressure resistant type shell, and described cover top portion is made up of transparent withstand voltage nappe, and described solar cell is positioned at described transparent nappe below.
Preferably, be designed with refractive power point on described transparent nappe, described refractive power point can project the sunshine of incident on described solar cell.
Preferably, described luminous body is LED lamp pearl.
Preferably, described LED lamp pearl is high brightness lamp pearl, and at least comprises redness and/or yellow.
For addressing the above problem, the present invention further provides a kind of vehicle dynamic tail display system, comprise solar energy earth induction road sign, described solar energy earth induction road sign longitudinally arranges equally spacedly along track on road.
Preferably, described vehicle dynamic tail display system also comprises trackside communication node, and described trackside communication node can be communicated by letter wirelessly with solar energy earth induction road sign, and the state of monitoring solar energy earth induction road sign.
Preferably, described vehicle dynamic tail display system also comprises host controller, described host controller and the communication connection of described trackside communication node, described host controller can be based on artificial input control information and/or the Information generation control instruction that provides of trackside communication node, described trackside communication node can receive the control instruction of described host controller and described control instruction is passed to described solar energy earth induction road sign, controls thus the ignition mode of the luminous body in described solar energy earth induction road sign.
Preferably, described vehicle dynamic tail display system also comprises visibility detector, described visibility detector and the communication connection of described trackside communication node, described visibility detector is used for detecting the visibility of road area, and the visibility information detecting is offered to trackside communication node, described trackside communication node can pass to described host controller by described visibility information.
Preferably, described vehicle dynamic tail display system also comprises surround lighting detector, described surround lighting detector and the communication connection of described trackside communication node, described surround lighting detector is used for detecting the illumination in road environment, and the illuminance information detecting is offered to trackside communication node, described trackside communication node can pass to described host controller by described illuminance information.
Preferably, described trackside communication node is synchronizeed and is configured along the vertical line of road section with solar energy earth induction road sign, and each trackside communication node can communicate with one or more solar energy earth induction road signs.
Preferably, described trackside communication node can be monitored the duty of solar energy earth induction road sign, and the work state information of solar energy earth induction road sign is passed to described host controller.
By solar energy earth induction road sign of the present utility model, can effectively detect the instantaneous of vehicle for each track passes through, and track is taken effectively and identified, thereby can under low visibility environment, show the tail that travels of vehicle by track, thus for rear traffick provides effective guiding and warning, and then effectively prevent the generation of traffic accident under low visibility environment.
Brief description of the drawings
Fig. 1 shows according to the structural representation of the vehicle dynamic tail display system of the utility model preferred embodiment;
Fig. 2 shows according to the composition structure chart of the solar energy earth induction road sign of the vehicle dynamic tail display system of the utility model preferred embodiment;
Fig. 3 is according to the control mode flow chart of the solar energy earth induction road sign of the vehicle dynamic tail display system of the utility model preferred embodiment.
Detailed description of the invention
Fig. 1 shows according to the structural representation of the vehicle dynamic tail display system 10 of the utility model preferred embodiment.In the exemplary embodiment shown in Fig. 1, road comprises multiple tracks in one direction, and solar energy earth induction induction road sign 11 (hereinafter also referred to as solar energy earth induction road sign or abbreviation road sign) is longitudinally installed equidistantly on each track.This solar energy earth induction road sign can detect vehicle through caused GEOMAGNETIC CHANGE, and then has determined whether vehicle process, and can be at vehicle through controllably lighting later also certain time.In addition, system 10 also comprises surround lighting detector 12, visibility detector 13 and trackside communication node 14, preferably, system 10 can also comprise host controller (not shown), between itself and trackside communication node 14, form communication connection, thus transmit from other unit to control control instruction relevant data and artificial input or that system generates automatically.
Trackside communication node 14 is arranged on trackside conventionally, can communicate by letter wirelessly with solar energy earth induction road sign 11, and with surround lighting detector 12, visibility detector 13 and host controller communication connection, in order to monitor the duty of road sign 11 and the duty of each road sign 11 fed back to host controller, the road environment parameter information (intensity of illumination of for example environment and visibility) that transmission detects, and receive and forward control instruction etc.Preferably, trackside communication node is synchronizeed and is configured along the vertical line of road section with solar energy earth induction road sign, one or more road signs and the binding of trackside communication node, thereby the solar energy earth induction road sign that makes trackside communication node can Rapid Circulation patrol local within the short as far as possible time.
Surround lighting detector 12 is used for detecting the light conditions in road environment, and the ambient light illumination information detecting is offered to trackside communication node 14.
Visibility detector 13 is used for detecting the visibility of road area, and the visibility information detecting is offered to trackside communication node 14.
The GEOMAGNETIC CHANGE that road sign 11 is caused by vehicle by geomagnetic sensor utilization wherein calculates whether there is vehicle process, and determines whether in conjunction with road environment parameter and current control strategy (hereinafter will describe in detail) mode (color, flicker, duration etc.) of lighting road sign and lighting.Thus, when needed, can show at the rear through vehicle the Dynamic Wake of vehicle, thereby for front vehicle provides warning, show that front exists vehicle in this track, should note maintaining safe distance, prevent from knocking into the back.
In a preferred embodiment, each trackside communication node in system is also subject to the control of host controller, road supervisor can utilize host controller pass through trackside communication node to road sign 11 issuing control instructions and/or transmit the control strategy changing, and then the road sign 11 in certain road area is carried out to centralized Control and setting.It will be appreciated by those skilled in the art that, upper control instruction both can manually be inputted, the control strategy that the change such as road sign status information, road environment parameter information for example providing according to trackside communication node will be carried out by road sign also can be provided automatically by host controller.Upper control instruction both can be used repeatedly blind mode to send by trackside communication node, also can realize data interaction in batches between upper control system by trackside communication node according to the unique address of each road sign 11.
Road sign 11 is a kind of surface-based equipment of initiatively inducing, aerial position very low (remaining basically stable with ground), so it is upwards that wireless lobe Design is pointed to main body, and radiation is most of can be absorbed by environment, therefore the antenna of the wireless communication module in road sign 11 can be subject to distance limit, actual measurement shows, in the time that road sign 11 laying distances are greater than 12 meters, just need to are realized information interaction and be realized Long-distance Control by trackside communication node 14.
Communication link (not shown) between roadside device 14 and upper control system can form by present known various wired or wireless communication mode, such as but not limited to GPRS or cdma mobile communication network or the speedway private network of communicating by letter along the line.
In the time that the installation interval of two adjacent solar energy earth induction road signs 11 is not more than 12 meters, also can form based on the built-in wireless communication module of each road sign 11 communication link of oneself, this link is only as auxiliary communication link, is used for transmitting control information and duty.In the time that solar energy earth induction road sign is worked with this built-in communication link, can also realize function controlled.
Similarly, although in the time that solar energy earth induction road sign shows the Dynamic Wake of vehicle in the mode of combination, conventionally utilize surround lighting detector 12 and/or visibility detector 13 to gather road environment information, but, it will be appreciated by those skilled in the art that vehicle dynamic tail display system of the present utility model can also utilize other to be suitable for detection type and detect road environment like the sensor of other type of road environment information.
Fig. 2 shows according to the composition schematic diagram of the solar energy earth induction road sign 11 of the utility model preferred embodiment.Road sign 11 mainly comprises geomagnetic sensor 113, luminescent device 114, processor 115, communication module (as shown in the dotted line frame of Fig. 2 top) and power module (as shown in the dotted line frame of Fig. 2 below).In the preferred embodiment, luminescent device is LED lamp pearl 114, thereby in order to light when needed as vehicle provides information warning, communication module comprises antenna 111 and wireless module 112, for communicating with one another between each road sign and communicating with trackside communication node 14; Power module comprises for electrical selector 116, Ni-MH battery 117, solar cell 118 and disposable lithium cell 119, with other element power supply of thinking in road sign 11.
In each solar energy earth induction road sign 11, at least comprise a geomagnetic sensor 113, it can detect the minor variations of earth magnetism of mounting points digitlization, export GEOMAGNETIC CHANGE amplitude quantitatively.Based on the output of geomagnetic sensor, can determine whether vehicle by and whether have vehicle stop on road sign.In preferred embodiment of the present utility model, geomagnetic sensor 113 adopts the HMC5883 of Buddhist nun's Weir suddenly, and according to reality, test finds that it has good stability in actual applications.
Processor 115 can comprise inner memory element, moves required control program and control strategy in order to storage control system.Typically, can utilize single-chip microcomputer to realize.The output of processor 115 base area Magnetic Sensors 113 has judged whether vehicle process, and correspondingly controls according to predetermined control strategy and in conjunction with the road environment information obtaining by antenna 111 and wireless module 112 mode whether LED lamp pearl 114 lights and light.
Preferably, road sign 11 can also comprise time service unit, gps satellite location, in order to determine the position at road sign 11 places and current time.
In view of solar energy earth induction road sign is that a kind of being arranged on initiatively induced equipment on road surface, the collision to it when it must bear high vehicle speeds and withstand voltage, its impact resistance and requirement of withstand voltage are high.In preferred embodiment of the present utility model, road sign 11 structurally adopts pressure-bearing type shell, use high transparent withstand voltage nappe in cover top portion, such as being made by high crystal silicon tempered glass, on the transparent nappe of this height, be designed with refractive power point, the refractive power sunshine of naming a person for a particular job projects the solar panel being arranged under this transparent nappe, make solar panel can effectively receive solar radiation, even if daylight is not yet can be put and be changed light path to improve solar radiation efficiency by refractive power while vertically shining to solar panel.
LED lamp pearl 114 is arranged on the car face of meeting one side in road sign 11 housings, alarming effect while lighting for guarantee lamp pearl, the quantity of lamp pearl is preferably no less than 4, and preferably adopts high-brightness LED lamp pearl, and in preferred embodiment of the present utility model, the brightness value of LED lamp pearl is 13000MCD.Lamp pearl color can arrange as required, for example, uses red for the greasy weather while warning, during for general warning, use yellow, and reddish yellow dual-colored LED can form multiple color combination by color matching, also can define in actual applications plurality of display modes simultaneously.
Antenna 111 is arranged on the side in road sign 11 housings, and its lobe Design will be pointed to trackside communication node 14.In preferred embodiment of the present utility model, it is 433,000,000 helical antenna that antenna 111 adopts carrier frequency.Correspondingly, wireless module adopts the CC1011 of the TI that carrier frequency is 433,000,000.Those skilled in the art will recognize that, antenna in road sign 11 and wireless module are not limited to above-mentioned particular instance, but suitable antenna and the wireless module of the environmental selection that can apply as required, select suitable carrier frequency frequency, adopt suitable communication code mode, and/or select the mode that whether communication is encrypted and is encrypted.For example, in actual applications, if need to realize longer-distance reliable communicating, can use ceramic antenna.
In the housing of road sign 11, intermediate layer mounting circuit boards, in order to meet the application demand under severe road environment, can carry out secondary seal protection against the tide to circuit board.
Power module is arranged on the bottom in road sign 11 housings, and leaves opening at housing bottom, to can change battery combination.When adopt shown in Fig. 2 hybrid power supply pattern time, disposable battery is installed in the bottom, uses flexible glue sealing.
In actual installation, can adopt droppable drain pan housing to hold solar energy earth induction road sign 11, because the road sign that is arranged on road surface under road environment can be because pitch be softening and vehicle rolls generation sedimentation, the effect of dismountable type drain pan is under normal mounting environment, to hold solar energy earth induction road sign, in the time there is sedimentation, be convenient to unload solar energy earth induction road sign and reinstall, now original drain pan is abandoned.
During for the ease of installation, calibrate magnetic and point to, conventionally on the housing of road sign 11, mark magnetic polarity, and make the magnetic pole of inner magnet sensing unit point to consistent with shell magnetic pole mark.
The solar energy earth induction road sign 11 for a long time prerequisite of continuous and effective work is that power module can continue normal power supply within its normal working life cycle.In road sign 11, the power supply mode of power module can adopt solar energy associating power supply and two kinds of basic powering modes of hybrid power supply.
Solar energy associating power supply pattern refers to, mainly form power module by solar panel and rechargeable battery combination, when illumination is up to standard, the generated energy of solar panel can charge to rechargeable battery, and night or illumination rely on rechargeable battery to power to other parts in road sign when not enough.
Test according to reality, on the south the Changjiang river, see that illumination range under day environment is greatly about 3500lux～25000lux, wherein 12000lux and following occupying the majority, North of Yangtze River is divided into snow and ice cover phase and time zone above freezing, wherein the illumination range of non-snow and ice cover phase is roughly at 4500lux～26000lux, and the snow and ice cover phase, actual illumination only had 150lux～1200lux.For meeting the product power reguirements under low-light (level) environment, the south of the lower reaches of the Yangtze River need solve seasonality all the time according to powerup issue and long-term overcast and rainy day (low-light (level)) powerup issue.In this applied environment, the power consumption of internal control and treatment circuit can be dropped to and can maintain the minimum power consumption of normal work, the unlatching window time of control sensor chip, when this window time only need to meet actual use, can effectively detect defined tested max. speed minimum and vehicle commander.By adopting aforesaid way, on the south the Changjiang river, adopt solar energy associating power supply pattern, can realize the normal work of road sign in alllife range, can be because of powerup issue cease operation.
Hybrid power supply refer to conventionally northern area application, discontinuity application, seasonal all the time correlate with in order to make solar energy earth induction road sign the adopted a kind of powering mode of still can normally working in the time need to using, it is characterized in that adopting two groups of power supplies, wherein one group is disposable chemical energy battery, and another group adopts the associating power supply module of solar recharging; Two groups of power supplies adopt pressure reduction partitioning scheme, solar energy associating power supply mode voltage is a little more than chemical energy battery pack, before solar powered combination consumable power source because output voltage is higher than chemical energy battery pack, so can preferentially power, in the time that the power supply of solar cell combination exhausts (voltage drop of now solar cell combination is gradually lower than chemical energy battery pack), chemical energy battery will be taken over solar cell combination and continue as road sign supply of electrical energy, and this power switching adopts seamless switching mode.Because the volume capacity of chemical energy battery combines than far above solar cell, so road sign can maintain normal work during solar cell is inoperable, in the time that road sign adopts interruption mode of operation, chemical energy battery can also prevent the energy storage fault that the overdischarge of accumulation of energy parts causes.
In the preferred embodiment shown in Fig. 2, what power module adopted is hybrid power supply pattern.Wherein, for electrical selector 116, for identification power supply source under hybrid power supply pattern and switching power supply source, the voltage ratio that selector in embodiment is made up of electronic component is compared with identifier, in design, have at Ni-MH battery 117 that final output point voltage can be higher than the final output point voltage of disposable lithium cell 119 electric in the situation that, because lithium battery front end has buffer circuit, Ni-MH battery 117 can not fill disposable lithium cell 119 is counter, can only power to the load; When the voltage of Ni-MH battery 117 approaches lower prescribing a time limit, the voltage of disposable lithium cell 119 is by the voltage higher than Ni-MH battery 117 gradually, Ni-MH battery 117 also has the reverse charge of preventing road, so disposable lithium cell 119 can only power to the load, can not charge to Ni-MH battery; Disposable lithium cell 119 is to start gradually to power to the load together with Ni-MH battery 117 during this period, in the time that Ni-MH battery 117 discharge voltages continue to be reduced to blanking voltage, power supply bumpless transfer to disposable lithium cell 119 is independently born, now Ni-MH battery 117 protected (over); When Ni-MH battery 117 obtains after solar cell 118 charging, voltage will rise gradually, and now power supply process again reverses gradually to Ni-MH battery 117 and fully powers.
Obviously, above-mentioned configuration is for hybrid power supply Model Design, if only use solar energy associating power supply, without using selector.
In addition, can be by add A/D module in confession electrical selector in important application, identify each Battery pack voltage and current power supply mode, and by communication module, this data upload to host controller is used as to the reference information of whole system maintenance and adjustment control strategy etc.
Preferably, in hybrid power supply pattern, chemical energy power supply should be able to provide the power supply capacity that is no less than 30% in life cycle management.
In the situation that having enough electric power supplies, geomagnetic sensor 11 can adopt continuous detecting pattern; And in the situation that needs are saved electric energy, geomagnetic sensor 11 can be set to only detect in window in the detection time arranging at a certain time interval, this interval should ensure, can detect the dilly that vehicle commander is not less than 3 meters, during this dilly passes through geomagnetic sensor position with Maximum speed limit, geomagnetic sensor is at least opened and is detected once; Preferably, adopt reinspection mode, should at least open and detect twice.
Below in conjunction with specific embodiment, describe the operating principle of vehicle dynamic tail display system of the present utility model and concrete implementation in detail.
The utility model basis is preset or the upper control strategy of assigning is in real time lighted built-in LED, color, the brightness of LED, continue the controlled tactical management of the parameters such as the time of lighting, control strategy is divided into and includes automatic control and upper real-time download two classes, and the control strategy that can include automatic control is set to default mode.
After earth induction in solar energy earth induction road sign 11 detects and opens, in the time of these solar energy earth induction road signs 11 of vehicle process, geomagnetic sensor 113 can detect magnetic anomaly and light the interior integrated LED lamp pearl 114 of road sign 11 according to control strategy.Vehicle can pass through multiple road signs 11 in the process of moving, and these road signs 11 all can be activated because of magnetic anomaly,, is arranged on that LED lamp pearl 114 in solar energy earth induction road sign is controlled lights in limited time that is.Thus, can see that in this vehicle rear-side dynamic light belt and a vehicle being made up of the road sign 11 of lighting goes together, i.e. " Dynamic Wake ".
As aforementioned, can be set to detect in isolated time window by magnetoresistive transducer in order to save electric power.Under this mode of operation, work pulsewidth and the pulse spacing need meet the testing requirement under max. speed and the shortest vehicle commander are defined, for example setting max. speed is 120 kilometers, displacement per second is 33 meter per seconds, if vehicle commander is 3 meters, convoy spacing distance is not less than 6 meters, and vehicle strides across the omnidistance required time of test point and is about 0.1 second, 0.2 second, interval, the shortest room of whole process; Can self-defined detection window opening time and interpulse period based on above-mentioned analysis, recheck mode (pulse of twice detection signal all detects that the Geomagnetic signal that same vehicle causes changes) design by secondary, each window opening time interval is not more than 35 milliseconds and can realizes effective detection.It will be appreciated by those skilled in the art that pulsewidth determines according to different chip parameter, under the prerequisite that maintains stable detection, pulsewidth is more narrow better; In addition, in the time that needs improve the tested speed of a motor vehicle, need to shorten window and open interval.
Solar energy earth induction road sign of the present utility model and corresponding vehicle dynamic tail display system are the traffic safety ensuring equipments under a kind of severe weather conditions, be mainly used under low visibility road environment, need to all do not work in all time.Only have in the time that terrestrial magnetic disturbance signal forms specific logical relation with startup controlled condition, system just starts, and starts later condition of work and current environment parameter correlation.Such as, in the time having mist or meet entry condition night, start and later light brightness, light control instruction or the built-in condition of work of system that the running parameter such as color, lighting time interval depends on that upper control system is real-time.
Fig. 3 schematically shows according to startup condition of work and the control flow of the vehicle dynamic tail display system of the utility model preferred embodiment.
First, detect the duty of road sign 11, as shown in step 310, that is, and judge whether all road signs all can with 14 proper communications of trackside communication node.
In preferred embodiment of the present utility model, trackside communication node 14 sends signal to the road sign associated with it 11, and replys to judge by whether obtaining whether road sign 11 normally works; Determining and cannot obtaining from specific road sign 11 and reply, the fault message of road sign 11 is passed to host controller by trackside communication node 14, the instruction of the autocontrol mode work of being sent to give tacit consent to each trackside communication node 14 by host controller, then by each trackside communication node 14, this instruction is sent to each normal road sign 11 of working that can receive its signal.And for fault road sign, if not having the damaged situation of electricity, it is being determined after the signal that cannot receive from trackside communication node 14, under the control of internal processor, be automatically adjusted into the autocontrol mode of acquiescence.
So in the time occurring in system 10 that one or more road signs 11 can not complete communicating by letter between roadside device 14 because of fault, whole system is with default conditions work, i.e. automatic control state.In this case, the object that the road sign that can communicate by letter smoothly also converts the working method of acquiescence to is to make system show state unified, in order to avoid driving vehicle is produced and disturbed.
Host controller can be crossed the position of determining fault road sign by the coding of identification road sign 11, so that road supervisor can easily locate fault road sign on-call maintenance.
Under automatic control state, 11, road sign in system 10 is relevant with current time, for example, as shown in the step 320 in Fig. 3, judge that current time is in night, for example, between 7 to early 7 of evenings, the road sign 11 in system 10 is detecting that vehicle is through out-of-date, light and continued for 3 seconds in mode yellow, intermediate light, as shown in step 325; Otherwise, if daytime, for example early 7 between 7 of evenings, shutdown system, as shown in step 350.Now, whether there is vehicle through not lighting road sign 11.
In the time that all solar energy earth induction road signs 11 in system 10 can both receive the instruction of roadside device 14, whole system is with master mode work.Under this mode of operation, first judge whether it is the greasy weather by detecting the visibility of road area, as shown in step 330 in Fig. 3, when being less than 500 meters when visibility, can think the greasy weather; Otherwise think that visibility is normal.In the normal situation of definite visibility, further judge environment light intensity, as shown in step 340 in Fig. 3, for example, in the time that ambient light intensity is less than 300Lux, can think and belong to the situation at cloudy day on daytime, now detecting that vehicle is through out-of-date, road sign 11 is lighted and continued for 2 seconds with yellow, intermediate light mode, as shown in step 345.If detect that in step 340 ambient light intensity is not less than 300Lux, can think and belong to the situation of fine day on daytime, now forward to step 320 further judge the time whether in 7 of evenings to early between 7, and result based on judgement is according to the autocontrol mode work of acquiescence.
Judging whether it is that on the basis in greasy weather, system 10 can also further judge whether to belong to thick fog or middle mist, as shown in step 360, and then works in a different manner.
For example, in the time that visibility is less than 200 meters, can be defined as thick fog, now detect that vehicle is through out-of-date, road sign 11 is lighted and continued for 3 seconds with red, high brightness mode, as shown in step 365; Otherwise, can think middle mist, by further judging ambient light intensity, determine it is daytime or night, as shown in step 370 again, for example, if detect that ambient light intensity is greater than 30Lux, can be defined as mist in daytime, detecting that vehicle is through out-of-date, road sign 11 is lighted and continued for 2 seconds with red, intermediate light mode, as shown in step 375; Otherwise, can be defined as mist in night, now detecting that vehicle is through out-of-date, road sign 11 is lighted and continued for 3 seconds with red, intermediate light mode, as shown in step 390.
In the present embodiment, adopting road sign to light the duration is 2 to 3 seconds, if the speed per hour through vehicle is 120 kilometers (33 meters per second), the solar energy earth induction road sign of installing continuously can dynamically show that a length is about the driving " tail " of 66 to 100 meters.
The processor of solar energy earth induction road sign according to the vehicle detecting for the last time for lighting initial time and starting immediately timing at vehicle through out-of-date, if having vehicle during lighting again through, time in.
In addition, when having detected that by solar energy earth induction road sign 11 vehicle is above road sign when the time of staying, can control the luminous body in the road sign in this road sign upstream certain limit is continued to light, such as 200 meters of upstreams are with interior all road signs, so that warning front vehicle, there is vehicle to stop in this track, should note dodging.When definite this vehicle is after road sign is removed, each road sign 11 can be returned to normal duty.
LED lamp pearl brightness regulation adopts pulse width modulation (PWM), and control mode has two kinds, and the one, controlled brightness, now brightness is assigned by upper control system, the 2nd, automatic control, now current illumination referential data is provided and provides brightness number based on current illumination by solar panel, respectively corresponding daytime to night is to various different luminance differences, according to actual measurement, low visibility in daytime of 500 meters under mist condition brightness value greatly between 3500～1500Lux, the brightness of LED lamp pearl is carried out corresponding with ambient light illumination, can significantly improve the long sight observability of greasy weather solar energy earth induction road sign, the corresponding ambient light illumination differential conversion that adopts of brightness of the present embodiment, be not more than in ambient light illumination under the prerequisite of 3500lux, ambient light illumination is poor can maintain 2500lux (solar energy earth induction road sign LED brightness is converted to illumination later and the difference of ambient light illumination), the long sight observability that now conversion obtains is by >=200 meters, certainly, can make long sight observability obtain to increase substantially not producing the night under night or mist condition by brightness adjusting under dazzling prerequisite.In a preferred embodiment, the brightness regulation of LED lamp pearl can be divided into 8 grades, wherein 1-4 level is corresponding to the situation of intermediate light in embodiment described in conjunction with Figure 3, and 5-8 level is corresponding to the situation of high brightness, being suitable in the situation of intermediate light or high brightness, can also combining environmental illuminance information regulate between corresponding rank.
A kind of multi-functional equipment of initiatively inducing based on earth magnetism car test control according to the solar energy earth induction road sign of the utility model preferred embodiment, be mainly used in speedway, also can be used for urban road, can adapt to by adjusting various parameters in its control program the needs of different application environment.
In the time being applied to highway communication as tail display device, road sign equidistantly configures with continuous along each track, 10～25 meters of configuration spaces, and general spacing should not exceed 20 meters, and mainly, depending on actual mist feelings and the feature of this road, referential data is as shown in the table:
One skilled in the art would recognize that and do not deviate from essence of the present utility model and the scope described as in general manner, can carry out various variations and/or amendment to the utility model shown in each specific embodiment.Therefore,, from all aspects, it is illustrative and not determinate that the embodiment here should be considered to.Equally, the utility model comprises the combination of any feature, and the especially combination of any feature in Patent right requirement, even if the combination of this feature or feature is not clearly stated in Patent right requirement or each embodiment here.
Claims (17)
1. a solar energy earth induction road sign, it is characterized in that, comprise at least one geomagnetic sensor, luminous body, processor and power module, described processor is connected with described geomagnetic sensor and described luminous body, described power module provides electric energy for other module in described solar energy earth induction road sign, described geomagnetic sensor can detect that vehicle is through the out-of-date terrestrial magnetic disturbance causing, and to processor output detections result, described processor is lighted described luminous body continue for some time through out-of-date from the position at described solar energy earth induction road sign place defining vehicle.
2. solar energy earth induction road sign according to claim 1, it is characterized in that, described solar energy earth induction road sign further comprises communication module, and described communication module is connected with described processor, and described communication module is for outwards transmitting data and receiving extraneous control instruction.
3. solar energy earth induction road sign according to claim 2, is characterized in that, described communication module is wireless communication module, and further comprises antenna and wireless module.
4. solar energy earth induction road sign according to claim 2, is characterized in that, described power module comprises solar cell and battery, and described solar cell can utilize solar energy for charge in batteries.
5. solar energy earth induction road sign according to claim 4, it is characterized in that, described power module further comprises for electrical selector and disposable battery, described confession electrical selector is connected with described battery and described disposable battery, and is determined and exported from the electric energy of described battery, still the electric energy from both exported from the electric energy of disposable battery simultaneously by both voltage of comparison.
6. solar energy earth induction road sign according to claim 5, it is characterized in that, the described electrical selector that supplies further comprises A/D module, for identifying the voltage of the voltage of described battery, described disposable battery and current power supply mode, and the result of identification is exported by described communication module.
7. solar energy earth induction road sign according to claim 1, it is characterized in that, described solar energy earth induction road sign also comprises pressure resistant type shell, and described cover top portion is made up of transparent withstand voltage nappe, and described solar cell is positioned at described transparent nappe below.
8. solar energy earth induction road sign according to claim 7, is characterized in that, is designed with refractive power point on described transparent nappe, and described refractive power point can project the sunshine of incident on described solar cell.
9. solar energy earth induction road sign according to claim 1, is characterized in that, described luminous body is LED lamp pearl.
10. solar energy earth induction road sign according to claim 9, is characterized in that, described LED lamp pearl is high brightness lamp pearl, and at least comprises redness and/or yellow.
11. 1 kinds of vehicle dynamic tail display systems, is characterized in that, comprise according to the solar energy earth induction road sign described in any one in claim 1 to 10, and described solar energy earth induction road sign longitudinally arranges equally spacedly along track on road.
12. vehicle dynamic tail display systems according to claim 11, it is characterized in that, described vehicle dynamic tail display system also comprises trackside communication node, described trackside communication node can be communicated by letter wirelessly with solar energy earth induction road sign, and the state of monitoring solar energy earth induction road sign.
13. vehicle dynamic tail display systems according to claim 12, it is characterized in that, described vehicle dynamic tail display system also comprises host controller, described host controller and the communication connection of described trackside communication node, described host controller can be based on artificial input control information and/or the Information generation control instruction that provides of trackside communication node, described trackside communication node can receive the control instruction of described host controller and described control instruction is passed to described solar energy earth induction road sign, control thus the ignition mode of the luminous body in described solar energy earth induction road sign.
14. vehicle dynamic tail display systems according to claim 13, it is characterized in that, described vehicle dynamic tail display system also comprises visibility detector, described visibility detector and the communication connection of described trackside communication node, described visibility detector is used for detecting the visibility of road area, and the visibility information detecting is offered to trackside communication node, described trackside communication node can pass to described host controller by described visibility information.
15. according to the vehicle dynamic tail display system described in claim 13 or 14, it is characterized in that, described vehicle dynamic tail display system also comprises surround lighting detector, described surround lighting detector and the communication connection of described trackside communication node, described surround lighting detector is used for detecting the illumination in road environment, and the illuminance information detecting is offered to trackside communication node, described trackside communication node can pass to described host controller by described illuminance information.
16. vehicle dynamic tail display systems according to claim 12, it is characterized in that, described trackside communication node is synchronizeed and is configured along the vertical line of road section with solar energy earth induction road sign, and each trackside communication node can communicate with one or more solar energy earth induction road signs.
17. vehicle dynamic tail display systems according to claim 13, it is characterized in that, described trackside communication node can be monitored the duty of solar energy earth induction road sign, and the work state information of solar energy earth induction road sign is passed to described host controller.
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| CN201420048553.XU CN203741744U (en) | 2014-01-24 | 2014-01-24 | Solar geomagnetic induction road sign and vehicle dynamic state trail display system |
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| CN201420048553.XU CN203741744U (en) | 2014-01-24 | 2014-01-24 | Solar geomagnetic induction road sign and vehicle dynamic state trail display system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731008A (en) * | 2017-11-20 | 2018-02-23 | 杭州博达伟业公共安全技术股份有限公司 | Tail self-adapting adjusting apparatus and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107731008A (en) * | 2017-11-20 | 2018-02-23 | 杭州博达伟业公共安全技术股份有限公司 | Tail self-adapting adjusting apparatus and method |
| CN107731008B (en) * | 2017-11-20 | 2020-04-21 | 杭州博达伟业公共安全技术股份有限公司 | Trail self-adaptive adjusting device and method |
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