CN101178846A - Roads traffic collision early warning device - Google Patents

Roads traffic collision early warning device Download PDF

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Publication number
CN101178846A
CN101178846A CNA2007101566473A CN200710156647A CN101178846A CN 101178846 A CN101178846 A CN 101178846A CN A2007101566473 A CNA2007101566473 A CN A2007101566473A CN 200710156647 A CN200710156647 A CN 200710156647A CN 101178846 A CN101178846 A CN 101178846A
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vehicle
module
early warning
attention
detecting
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CNA2007101566473A
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Chinese (zh)
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CN100504954C (en
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陈伟
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陈伟
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Abstract

The invention discloses an early-warning device for road traffic conflicts, which comprises a passing vehicle detector, a staying vehicle detector, a pedestrian detector, a data receiving module, a main control module, a forward alarm, a backward alarm, a driving module, a data communications interface, a voice communications and broadcast module, and a power source. An LED array is installed inside the backward alarm, and a light source and a light-gathering part are installed inside the forward alarm. Output terminals of the passing vehicle detector, the staying vehicle detector and the pedestrian detector connect to the data receiving module; the output terminal of the data receiving module connects to the main control module; the main control module connects to the data communications interface; the other end of the data communication interface connects to the voice communications and broadcast module; and the output terminal of the main control module, via the driving circuit, connects to the forward alarm and backward alarm. The invention provides the multiple early-warning information preventing conflicts to the traffic participants in the region of low visibility and traffic blind spot with the advantages of a good effect in warning and a wide application.

Description

Roads traffic collision early warning device

Technical field

The present invention relates to a kind of roads traffic collision source of early warning, particularly relate to a kind of conflicting active roads traffic collision early warning device of road traffic participant that is applied to prevent.

Background technology

In road traffic, have an accident normally because the accident conflict point that do not have between the traffic participant in time to find before accident takes place to exist is caused, for example under highway low visibility situation, reason can knock into the back with front truck back car owing to sight line is unclear etc.; In " stain " zone that urban road often has an accident generally also is to cause for various reasons can not in time finding the other side between the traffic participant and adopting an effective measure, thereby causes the generation of accident.

All measures of field of traffic and technology all are round the minimizing accident, ensure what unimpeded this theme launched, for example traffic law, traffic lights, various identifier markings or the like, and it mainly acts on all is that standard road traffic participant and minimizing accident take place.

But, because various natural causes and objective factor, the generation of roads traffic collision and the factor that roads traffic collision may take place still exist, the geographical environment inducement in the mist in the physical environment, haze, the accident inducement that low visibility weather caused such as rain, snow, traffic " stain " area etc. for example, in these highway sections, prior art also has some early warning equipment that are used to point out traffic participant, for example brown flasher, sudden and violent flashing light, early warning sign, phonetic warning device or the like.Chinese patent ZL02240352.3 " motor vehicle highway remote control phonetic warning device " discloses a kind of motor vehicle highway remote control phonetic warning device that comprises time base circuit IC1, wireless signal transmission integrated circuit (IC) 2, wireless signal receiving integrate circuit IC3, tone decoder IC4 and phonetic warning device, and its phonetic warning device mainly is made up of voice ic chip 5 internal memory power amplifiers and loudspeaker Y.During work, audio coding ic chip 4 converts sound signal to potential change, and control voice power amplifier piece IC5 work is carried out phonetic warning by loudspeaker Y sounding.This precaution device has only a kind of warning way, function singleness, applicable situation limited.

Generally, be direct and effective when giving the forewarning function of traffic participant with the early warning information of incident direct correlation, for example traffic-police's floor manager, traffic participant can be witnessed the barrier in the place ahead etc.; And standing, tend to be ignored with irrelevant, the single early warning signal of incident by traffic participant, still do not have a kind of prior art can before traffic participant may clash prerequisite, give effective early warning that may clash at present.

Summary of the invention

Technical matters to be solved by this invention is, overcome the defective that prior art exists, provide a kind of and give the multiple pre-caution information that traffic participant avoids conflict, good warning effect, the active roads traffic collision early warning device that the scope of application is wide in low visibility and traffic " stain " area.

The present invention addresses the above problem the technical scheme that is adopted: this roads traffic collision early warning device, its design feature is: comprise the vehicle passing detection device, the stoppage of vehicle detecting device, the walk detecting device, data reception module, the main control module, the forward direction attention device, the back is to attention device, driver module, data communication interface, speech communication and broadcast module, power supply, described back is equipped with light emitting diode matrix in attention device, light source and optically focused parts are installed in the described forward direction attention device, described vehicle passing detection device, the stoppage of vehicle detecting device, the walk detector output end is connected with data reception module, the data reception module output terminal is connected with the main control module, the main control module is connected with data communication interface, the data communication interface other end is connected with speech communication and broadcast module, main control module output terminal is by driving circuit and forward direction attention device, the back connects to attention device, power supply and vehicle passing detection device, the stoppage of vehicle detecting device, the walk detecting device, the main control module, the forward direction attention device, the back is to attention device, driver module, data reception module, speech communication and broadcast module connect.This collision early warning device can be given multiple pre-cautions such as light caution that traffic participants such as vehicle, pedestrian avoid conflict, sound caution, good warning effect.

The described vehicle passing detection device of roads traffic collision early warning device of the present invention adopts laser correlation vehicle passing detection device, this laser correlation vehicle passing detection device comprises Laser emission part and laser pick-off part, Laser emission part and the relative installation of laser pick-off part, described laser emission section branch comprises wireless control switch, modulation and controller, Laser emission module, and laser pick-off partly comprises laser pick-off unit, demodulation and controller.

The described vehicle passing detection device of roads traffic collision early warning device of the present invention adopts visible light or non-visible light wave band correlation detecting device or microwave sounding detecting device or ultrasonic listening detecting device or ground induction coil detecting device or automatic identification detector of video or sound wave identification detector.

The described stoppage of vehicle detecting device of roads traffic collision early warning device of the present invention adopts more than two or two heat to release receiving tube, each heat is released receiving tube by different forward angle series arrangement, the receive window that described heat is released receiving tube is installed on the spring support, and heat is equipped with the filter that sees through 6.5 μ m~8.6 μ m infrared waves before releasing the receive window of receiving tube.

The described walk detecting device of roads traffic collision early warning device of the present invention adopts microwave detector.

There are alert icon district and caution literal field in the described back of roads traffic collision early warning device of the present invention to the display surface of attention device, and the back is furnished with display surface early warning brightness regulation parts to attention device.Early warning brightness is changed with environmental change, strengthen the caution effect.

The described main control module of roads traffic collision early warning device of the present invention connects from resetting button, the main control module adopts the microprocessor of tape program control, described data communication interface configuration digitizing wireless communication interface and wire communication interface, the IP communication interface is adopted in the speech communication of described speech communication and broadcast module, and broadcast module adopts the digital recording chip.

The described power supply of roads traffic collision early warning device of the present invention adopts solar cell.Utilize solar poweredly, application site is installed not influenced by power supply.

The present invention compared with prior art has the following advantages: rational in infrastructure, multiple caution, early warning are effective, and multiple function, the scope of application are wide.1, this collision early warning device has made up vehicle passing detection device, stoppage of vehicle detecting device, walk detecting device, forward direction attention device, back to attention device and speech communication and broadcast module, multiple pre-caution signals such as the light of having realized avoiding conflict for traffic participants such as vehicle and pedestrian, sound, both strengthen pre-caution effect, widened range of application again; 2, forward direction attention device and back are to the setting of attention device, under the highway low visibility situation when back car and leading vehicle distance are nearer, send anti-collision early warning signal clearly can for the back car of follow-up subsequently, can more effectively give the road conditions of the vehicle prompting the place ahead in travelling, make follow-up vehicle take measures to avoid the generation of accident if having time in advance; 3, the setting of vehicle passing detection device and stoppage of vehicle detecting device, when highway uses, can carry out the vehicle that travels in the track by, stop to detect, and detected vehicle approximate location is sent on the electronic chart of command centre and does corresponding the demonstration; 4, the walk detecting device can be provided with the strong early warning that prevents traffic conflict in traffic " stain " zone, sends the early warning signal of avoiding a conflict to the both sides that may produce traffic conflict; 5, utilize solar poweredly, the use infield of collision early warning device is not subjected to power supply limitation.

Description of drawings

Fig. 1 is an embodiment roads traffic collision early warning device structural representation block diagram.

Fig. 2 is to attention device structural representation block diagram behind the embodiment.

Fig. 3 is an embodiment forward direction attention device structural representation block diagram.

Fig. 4 is an embodiment vehicle passing detection device structural representation block diagram.

Fig. 5 is an embodiment vehicle passing detection device circuit block diagram 1.

Fig. 6 is an embodiment vehicle passing detection device circuit block diagram 2.

Fig. 7 is an embodiment vehicle passing detection device circuit block diagram 3.

Fig. 8 is an embodiment stoppage of vehicle detector arrangement schematic block diagram.

Fig. 9 is an embodiment stoppage of vehicle detector circuit functional-block diagram.

Figure 10 is an embodiment main control modular circuit functional-block diagram.

Figure 11 is an embodiment vehicle passing detection device workflow diagram.

Figure 12 is an embodiment stoppage of vehicle sensors work process flow diagram.

Figure 13 is an embodiment roads traffic collision early warning device workflow diagram.

Embodiment

Example structure is referring to accompanying drawing.

Referring to Fig. 1, this roads traffic collision early warning device mainly is made up of to attention device 9, forward direction attention device 10 and power supply 11 housing, vehicle passing detection device 1, stoppage of vehicle detecting device 2, walk detecting device 3, data reception module 4, data communication interface 5, main control module 6, speech communication and broadcast module 7, driver module 8, back.Vehicle passing detection device 1, the output terminal of stoppage of vehicle detecting device 2 and walk detecting device 3 is connected with data reception module 4, the output terminal of data reception module 4 is connected with main control module 6, main control module 6 connects host computer SWJ by data communication interface 5, the other end of data communication interface 5 is connected with speech communication and broadcast module 7, the output terminal of main control module 6 is connected to attention device 9 with the back to driving circuit 8-1 by the back, be connected with forward direction attention device 10 by forward circuit 8-2, the output terminal of power supply 11 connects the power input of collision early warning device and the power input of detection module, to vehicle passing detection device 1, stoppage of vehicle detecting device 2, walk detecting device 3, data reception module 4, main control module 6, speech communication and broadcast module 7, after, forward circuit 8-1 and 8-2, the back is to attention device 9,10 power supplies of forward direction attention device.

Referring to Fig. 2, the back of embodiment is equipped with light emitting diode matrix in the display surface of attention device 9, and be furnished with display surface early warning brightness regulation parts, and alert icon district 9-1 and caution literal field 9-2 are arranged on the display surface, adopt the LED dot matrix to form caution figure and simple early warning statement.The LED array that arrange in precaution device 9 back drives to driving circuit 8-1 by the back, present embodiment adopts fixing " three a cornet marks " figure and two 32 * 32 dot matrix, with the 74HC595 driving circuit LED array is driven, the brilliant scientific and technological SITI ST2221C of company is put in MBI5028, Taiwan that driving circuit 8-1 also can select for use TLC5941 chip, the Taiwan of Texas Instruments to build up scientific and technological MBI company.Early warning figure and simple early warning term also can use prefabricated lamp box.The back is critical components of prevention traffic conflict to attention device 9, and during use, the back is installed on the roadside promptly relative with vehicle heading the installation to the display surface of attention device 9 towards direction to the car.The back is controlled by master controller 6 to the LED of attention device 9 brightness, regulate by display surface early warning brightness regulation parts, daytime is when starting, use the high brightness display mode, when being in the low visibility demonstration, just regulate LED brightness according to visibility, in the hope of reception and registration early warning information far away as far as possible under dazzle-free situation.For avoiding misleading under not unlatching situation of attention device, for the driving personnel, the back adopts light glass to block enclose pattern to attention device 9 at the logotype front end, and triangle caution figure does not use reflective membrane, when attention device does not start operation, externally can't see the early warning figure basically.During startup, attention device sees through light glass and shows the early warning figure to sending a car, and is to strengthen display effect, the back to attention device 9 according to the frequency scintillation that presets or according to controller given frequency scintillation warning mark and caveat.The dot matrix display module also can be accepted the host computer instruction and show simple text or figure, at ordinary times not as the roads traffic collision attention device time, can be used as easy electronic information board and uses.

Referring to Fig. 3, forward direction attention device 10 is high brightness boundling illuminating lamps that are provided with along the vehicle operating direction, in light source and optically focused parts are installed, light source is selected two light sources or multiple light courcess or single light source combination, can select high light LED or other higher source luminances.The single light source combination is adapted at using night; The multiple light courcess combination is used under the low visibility by day.When selecting short wavelength purple light source for use, the caution effect is more obvious; When selecting white light as the caution light source for use, can adopt gradually bright technology, reach about 1~3 second the brightest of the excessive time from a bright light source to light-source brightness, this mode can reduce the photoimpact to vehicle, and can form difference with the flashlamp that electronic police is used.During startup, forward direction attention device 10 can be along the front truck travel direction continuously or be interrupted and send focus illumination high light JJZMQG, and this high light can illuminate the front by the rear portion of vehicle YTGCL, gives the existence of the car prompting front car of back.Embodiment forward direction precaution device 10 is made up of 8 high power led lighting modules that forward circuit 8-2 drives, and the optically focused parts carry out honeycomb fashion optically focused with 8 independent LED lighting modules, and forward circuit 8-2 adopts relay; About 3W~the 3.5W of total power consumption of 8 light emitting diodes.

Referring to Fig. 4, the vehicle passing detection device 1 of embodiment adopts laser correlation vehicle passing detection device 101, this laser correlation vehicle passing detection device 101 mainly is made of Laser emission part 1011 and laser pick-off part 1012, Laser emission part 1011 is installed in a side of road, at the road opposite side laser pick-off part 1012 is installed, both install relatively.TXCLFX represents the traffick direction among the figure.During no vehicle pass-through, laser pick-off part 1012 can receive the modulated laser signal DZJGXH of Laser emission part 1011 emissions, when having vehicle to pass through, the signal of Laser emission part 1011 emissions will be blocked by vehicle is of short duration, laser pick-off part during this time 1012 can't receive the modulated laser signal DZJGXH of Laser emission part 1011 emissions, vehicle can receive the modulation signal that Laser emission part 1011 is sent again by back laser pick-off part 1012, has or not vehicle to pass through road thereby detect.Embodiment vehicle passing detection device 1 workflow is referring to Figure 11.

The circuit theory of embodiment laser correlation vehicle passing detection device 101 is referring to Fig. 5, Laser emission part 101 1 comprises wireless control switch 101-1, modulation and controller 101-2 and Laser emission module 101-3, and laser pick-off part 1012 comprises laser pick-off unit 101-4 and demodulation and controller 101-5.Wireless control switch 101-1 is connected with modulation and controller 101-2, modulation and controller 101-2 are connected with Laser emission module 101-3, laser pick-off unit 101-4 is connected with demodulation and controller 101-5, demodulation and controller 101-5 are connected with master controller 6, and power supply 11 is connected with Laser emission module 101-3 with wireless control switch 101-1.Laser emission part 1011 is independently modules, when visibility was higher than threshold value, it did not need work, so when roads traffic collision early warning device is closed, Laser emission part 1011 is accepted the out code that upper main frame sends, and 101-1 closes Laser emission by wireless control switch.When needs were opened, upper main frame was opened Laser emission part 1011 by wireless control switch 101-1.Modulation and controller 101-2 are in order effectively to discern a large amount of undesired signals that highway might exist along the line, earlier it to be carried out the signal modulation before Laser emission, to guarantee the validity of signal.Laser emission module 101-3 is the Laser emission subassembly that Laser Devices, exciter component, fabricated section are combined.The semiconductor laser HL7892E/G type that embodiment selects for use Hitachi, Ltd to produce, also can adopt the Laser emission assembly LB-00617/YD of technical grade, in disturbing little vehicle passing detection environment, only detect and also can obtain good vehicle passing detection effect by stable discontinuous pulses.When being in when solar powered, for energy savings, Laser emission module 101-3 implements to be interrupted mode of operation, and the time is passed through less than the shortest vehicle commander in the gap that stops to launch.Laser pick-off part 1012 can use simple photodiode as laser pick-off unit 101-4 in most applied environment, and the model that present embodiment is selected for use has PT315AB, BPW76B, ST-1KL3A or the like.But when using under the complex environment that has strong interference extremely individually, laser pick-off part 1012 core parts are selected avalanche photodide for use, and model is GT231 type Si APD.Modulation and demodulation normally matches, when modulator uses recognizer to modulate, demodulation and controller 101-5 just must carry out demodulation to the laser modulation signal that receives, usually this pattern is only used under complex environment, under the major applications environment, when using the normal optical electrical part to carry out the detection signal reception, can be in the transmitting terminal identification signal that superposes, for example add a fixing coding, receiving end is discerned this coding, send master controller 6 to discern signal after reception and shaping.

The double simple and easy recognizer of local visibility of doing of laser correlation vehicle passing detection device 101 energy, when visibility good, the laser signal intensity that receiver receives is higher, when visibility is low, the laser signal intensity that receiver is received also will weaken thereupon, can effectively discern the variation of local visibility by above-mentioned variation.When the roads traffic collision early warning device unit operation, the estimation visibility value that laser correlation vehicle passing detection device 101 is judged is one of condition that starts prior-warning device, when being in low visibility, when the signal that receiver receives was lower than as requested preset threshold value, main control module 6 was sent the instruction that prior-warning device is started working.When being in the networking duty, enabled instruction is sent by being in upper visibility detector, when low visibility during in threshold value, for example low visibility is in the time of 1000 meters, host computer sends the prior-warning device enabled instruction, prior-warning device is activated, this moment if any vehicle through out-of-date prior-warning device work and backward car warn.

The existing unidirectional track of highway generally is more than or equal to two lane highways, and the vehicle passing detection mode is variant with the different meetings in track.On unidirectional two lane highways, vehicle detected by laser correlation mode and pass through vehicle, on the above highway of two lane highways when detecting by vehicle, still can use laser correlation mode to detect vehicle passes through, but because above track, the unidirectional highway half range road surface broad of two lane highways, if laser correlation mode transmits strong inadequately if itself just may be interrupted because thick fog stops under thick fog, owing to know concrete that track under the multilane situation car is not arranged in addition, early warning meeting at full track causes " wolf has come " phenomenon, finally weakens prior-warning device effectiveness.If do not need to consider the track occupation problem, also can keep the validity of vehicle pass-through detecting device by the power that increases the correlation generating laser, that is to say greater than the road surface of two lane highways and also can use laser mode to detect the vehicle pass-through state.

Use the Doppler effect Detection Techniques to add mode that the infrared heat detection technique combines to the above road of unidirectional two lane highways to detecting by vehicle, by regulating the emission angle and the emissive power of the microwave transmitter module that produces Doppler effect, the investigative range of may command Doppler effect Microwave Detector.In unidirectional three tracks or the above road in three tracks when using, a detecting device respectively is installed in roadside, road and isolation strip, center, the detecting device that the detecting device of installing in the road-center isolation strip covers two tracks, both sides, road edge installation covers two tracks of this side, edge detector has detected vehicle when passing through, and lights the attention device of road edge; When the road center point detecting device has detected vehicle pass-through, light the attention device of road center point, can make the back car can roughly differentiate the through lane of front truck like this.

The detection vehicle of real-time, validity that can ensure detection under various applied environments is a lot of by technological means, and the vehicle passing detection device that can select for use accordingly according to the traffic prewarning object of different conflict points also has visible light or non-visible light wave band correlation detecting device, microwave sounding detecting device, ultrasonic listening detecting device, ground induction coil to survey detecting device, the automatic identification detector of video, sound wave identification detector.Various vehicle passing detection devices all can provide judges that alarming device starts signal not.

When the vehicle passing detection device 1 of embodiment adopted the microwave sounding detecting device, microwave sounding vehicle passing detection device had the independent two kinds of mounting meanss of installation of installing and embed.

Referring to Fig. 6, the independent microwave sounding vehicle passing detection device 102 of installing comprises microwave transmitting and receiving head assembly 102-1, the preposition pre-service of signal and analysis circuit 102-2 and digital radio transport module 102-3.The preposition pre-service of signal is connected with microwave transmitting and receiving head assembly 102-1, digital radio transport module 102-3 with analysis circuit 102-2, and the independent microwave sounding vehicle passing detection device 102 of installing is connected with power supply 11.Embodiment adopts the dual technology detector of repacking, will survey wavelength and be limited between 6.5um~8.6um, covers a filtering silicon chip before the infrared thermal releasing pipe receive window of the dual technology detector of 12~18 meters of detection ranges, is installed on the prior-warning device support again.Microwave transmitting and receiving head assembly 102-1 is made up of resonance modules, amplifying circuit module board, also can adopt the resonance modules plus signal to amplify and the treatment circuit composition, and resonance modules can adopt import assemblies such as Singapore, South Africa, Germany, also can adopt homemade assembly.Preposition pre-service of signal and analysis circuit 102-2 are microprocessors, select LPC900 in an embodiment for use.Its main effect is that 102-3 was sent to main control module 6 by the digital radio transport module after the vehicle pass-through situation with this sidecar road identified.

Referring to Fig. 7, embedding the detection circuit that microwave sounding vehicle passing detection device 103 is installed is the same with independent module of installing, and comprises microwave transmitting and receiving head assembly 102-1 and preposition pre-service of signal and analysis circuit 102-2.Embedding 103 embeddings of installation microwave sounding vehicle passing detection device is installed in the prior-warning device, microwave transmitting and receiving head assembly 102-1 is connected with analysis circuit 102-2 with the preposition pre-service of signal, and the preposition pre-service of signal is connected with main control module 6 by data communication interface 5 with analysis circuit 102-2.

Referring to Fig. 8, Fig. 9, stoppage of vehicle detecting device 2 adopts more than two or two heat to release receiving tube 2-1, and each heat is released receiving tube 2-1 by different forward angle series arrangement, and embodiment has used three heat to release receiving tube 2-1.Stoppage of vehicle detecting device 2 comprises heat and releases receiving tube 2-11,2-12,2-13, amplification and shaping circuit 2-2 and three stoppage of vehicle measurement processor 2-3, three are amplified and shaping circuit 2-2 releases receiving tube 2-11,2-12 with heat respectively, 2-13 links to each other, three are amplified and shaping circuit 2-2 links to each other with stoppage of vehicle measurement processor 2-3, and stoppage of vehicle measurement processor 2-3 is connected with data reception module 4.Embodiment heat releases that PM611 unit heat that receiving tube 2-11 adopts the Shanghai Buddhist nun to fill in pull sensor company limited is released receiving tube or PD632 double base heat is released receiving tube, and stoppage of vehicle measurement processor 2-3 uses the LPC900 series of products.

To stop in the track be breakneck to vehicle under highway low visibility environment, need survey and car early warning backward it.The vehicle that adopts the infrared thermal releasing Detection Techniques to stop in real time in to the track at the highway section detects, when the vehicle passing detection zone, the vehicle startup chance discharges certain heat, detectable temperature coverage approximately from 120 ℃ up to the interval consistent, according to Wien's displacement law with environment temperature λ m = b T As can be known, this thermal source wavelength coverage has covered 6~10 μ m at least, and the infrared ray of wavelength between 6 μ m~10 μ m has on-dispersive, when this wave band infrared ray passes air layer, can be absorbed by air hardly, it can effectively penetrate air layer and be received by the infrared thermal releasing receiving tube 2-1 that installs in the stoppage of vehicle detecting device 2.Real-time vehicle stops to detect in highway is used infrared reception is divided into two~three subregions, and according to receive pointing to and the motor vehicle consistent forward manner installation of direction of advancing, each subregion points to one and receives angle---the forward angle of pointing to the vehicle direct of travel, each detection zone is by the forward angle series arrangement, and the by stages is not overlapping.Referring to Fig. 8, present embodiment adopts three heat to release receiving tube 2-1, is divided into first detection zone 1 according to three forward angle #, second detection zone 2 #, the 3rd detection zone 3 #Deng three detection zones.Through out-of-date, will inevitably pass through different detection zones in order at motor vehicle, heat is released the travel condition that receiving tube 2-1 can identify vehicle.After for example vehicle entered guarded region, the heat that vehicle discharges will be by first detection zone 1 #Heat release receiving tube 2-11 and receive, if vehicle continues to advance, the heat that vehicle distributes will be at second detection zone 2 #, the 3rd detection zone 3 #Interior quilt heat is separately released receiving tube 2-12,2-13 and is received respectively.After vehicle rolled guarded region away from, the thermal source that is produced by vehicle disappeared, and this moment, heat was released no signal in the receiving tube 2-1.Can identify vehicle substantially and whether rest in the guarded region by detecting three thermal source residence time in the detection zone.Embodiment stoppage of vehicle sensors work flow process is referring to Figure 12.

Because heat is released the technical characteristic decision of receiving tube, when testee is in complete when static, heat is released receiving tube will be in state of saturation, even this moment, stoppage of vehicle can not be found in detected zone yet, need constantly the Fei Nieer lens before " rocking " heat is released receiving tube, make heat that monitored vehicle comes out form infrared pulse constantly " activations " heat release receiving tube, can make heat release the infrared information that receiving tube continues to export monitored point.According to these characteristics, stoppage of vehicle detecting device 2 adopts little transfer point distributed architecture with the refraction point refinement in the lens on the Fei Nieer lens, adopt the detector head assembly support of spring cupport structure, and one " heavy curtain moving " device is set, drive Fei Nieer lens " vibration " with vibration motor, make heat release receiving tube and can constantly obtain the in esse thermal source excitation and the output of remaining valid.If thermal source does not exist, even " heavy curtain is moving " detector head does not have information output yet, " heavy curtain is moving " only just starts working under the prerequisite that prior-warning device starts.

When highway used, for avoiding interference and improve reliability, heat was released receiving tube 2-1 band selection and has been received spike and be about about 6.5 μ m, receives the infrared ray about the about 7.5 μ m of wavelength~14 μ m.PM611 unit heat is released receiving tube, PD632 double base heat, and to release the reception interval of receiving tube be 7.4 μ m~14 μ m, according to Wien's displacement law, and the heat scope that in above-mentioned receiving area, just in time can effectively intercept motor vehicle and come out.When direct use Fei Nieer lens add the high-gain treatment circuit, heat is released receiving tube and can be received the engine heat that is no less than 80 meters distances in the winter time, in two seasons of spring and autumn, can receive the engine heat that is no less than 60 meters distances, but reception can be poor when temperature is higher, and along with the rising heat of environment temperature is released the receiving tube working sensitivity and can be reduced even lose efficacy, reason is that the reception wavelength that heat is released receiving tube has covered 6~14 μ m, when environment temperature is higher, environment temperature may cover the wave band below the 8.9 μ m, just in time be in heat and release the range of receiving of pipe, this will make heat release pipe to be in state of saturation.Embodiment solves four seasons sensitivity difference problem, takes to improve the reception temperature spot that heat is released receiving tube, will receive on the wavelength and move.Concrete grammar is the filter that installs a slice silicon chip or ruby material before heat is released the receiving tube receive window additional, adopt vacuum coating technology vacuum spraying one deck infrared-filtered film on silicon chip or ruby substrate, filter will be higher than the wave band of cutoff frequency and be lower than the frequency filtering of designated band, infrared band information that the Fei Nieer lens see through before releasing receiving tube, heat is limited between 6.5 μ m~8.6 μ m entering, the temperature that this wavelength covered is far beyond the environment temperature height, so the variation of environment temperature will can not released the bigger influence of sensitivity generation of receiving tube to heat, and this covering temperature be motor vehicle in the temperature range that can discharge, under this state, signal to noise ratio (S/N ratio) is higher, can significantly improve the sensitivity that heat is released receiving tube, the interference that effectively overcomes environmental change and caused.

Stoppage of vehicle detecting device 2 also has the vehicle passing detection function, when using under the low visibility environment, possesses the technical conditions of the vehicle passing detection born, but when vehicle passed through at a high speed, detection sensitivity was not as good as laser correlation vehicle passing detection device.The vehicle location that does not need to add when stoppage of vehicle detecting device 2 detects, and the vehicle parking that in the less applied environment in track, a sense partitions can only be set, uses a pyroelectric effect receiving tube to finish whole road surface detects.

The walk detecting device 3 of embodiment adopts microwave detector.When at common road people's car being intersected " stain " of conflict when conflicting early warning, can adopt " two mirror " is that microwave adds infrared Detection Techniques mobile personnel is surveyed, and uses ground induction coil that motor vehicles are surveyed.The pedestrian will enter traffic " stain " or " blind spot " preceding, whether prior-warning device may detect whether there is traffic conflict, have motor vehicle also will enter " stain " simultaneously, and as required to the outstanding conflict of the both sides that may produce conflict early warning.In " stain " zone, pedestrian's uncertain factor is more generally speaking, so common meeting machines motor-car, if motor vehicle will enter " stain " then give under the prerequisite of the indicative information of motor vehicle, emphasis is to street pedestrian's early warning that may exist.Usually it is very effective adopting ground induction coil that motor vehicle is detected in " blind spot " highway section, when detecting the motor vehicle that enters before the conflict point, provides corresponding warning information according to the priority pass condition.

The speech communication of embodiment and broadcast module 7 comprise speech communication module 7-1 and broadcast module 7-2, adopt the IP communication interface, and broadcast module 7-2 adopts the digital recording chip.Speech communication module 7-1 is made up of a cover ip voice communication apparatus, adopt duplex to amplify the intercommunication mode realizes and host computer between duplex signaling, main chip employing ES3890F 39VF080 etc., communication is based on agreement H.323; Broadcast module 7-2 adopts based on the voice transfer mode of agreement H.323, based on the mode of operation of paging telephone.Conventional sound early warning is a storage early warning statement in the digital recording chip, is started by main control module 6 when needs or starts the voice early warning that amplifies by host computer by network remote.If actual available bandwidth between data communication interface 5 and the host computer is more than or equal to 100K, just can insert digitized crisis phone only terminal or the unidirectional terminal that amplifies at this interface, the equipment and the communication resources of early warning, crisis phone only are integrated, to save on-the-spot resource and gross investment.

Roads traffic collision early warning device has the ability that works alone with the networking collaborative work, the roads traffic collision early warning device configuration meets the communication interface of rig-site utilization demand for this reason, data communication interface 5 configuration digitizing wireless communication interface and the RS485 interfaces of embodiment.The digital radio communication interface mainly is responsible for realizing simple functional the connection with last level controlling system, can by this interface finish prior-warning device startup, close, operation such as local function unlatching; Can form full function link with upper opertaing device by the RS485 interface, the repertoire of roads traffic collision early warning device can be by the host computer centralized control under this pattern, vehicle passing detection device 1 and stoppage of vehicle detecting device 2 detected vehicle pass-through situations and stoppage of vehicle situation all can send host computer to by communication interface, and host computer also can be downloaded to be needed the Word message content that shows and start the sound early warning.

Roads traffic collision early warning device can adopt solar powered or use civil power work, and the embodiment power supply adopts 20W polycrystalline silicon solar photovoltaic battery panel as the power supply source, and 36AH, 12V maintenance-free battery are as energy storage device.Photovoltaic battery panel carries out synergy by sun power synergy device to photovoltaic cell to be handled, and the efficient of the 20W solar-energy photo-voltaic cell after the processing is equivalent to 30~35W photovoltaic cell; When using the 36AH configuration, overcast and rainy keeping the prior-warning device continuous working long period.The Charge Management of sun-generated electric power is finished by main control module 6 with the discharge management.

The main control module 6 of embodiment connects from resetting button, clicks from resetting the manually opened alarming device of button, clicks from the button that resets again and closes alarming device.Effect from the button that resets mainly is to have vehicle trouble to stop the back when alarming device does not start, and the vehicle driver can manually open alarming device and show early warning to strengthen.Alarming device can long-rangely close or reset, and also can close on the spot.Alarming device by artificial the unlatching after, will send the information that this alarming device is manually opened to command centre by data communication interface 5, this information is equivalent to warning message, also can be defined as required, for example aid request etc. again.Main control module 6 adopts the LPC900 series microprocessor, each parts work of management road traffic conflict prior-warning device, and its while managing electrical power 11, Laser emission, ambient light illumination detection, forward direction attention device 10, back are to work such as attention devices 9.

The circuit theory of embodiment main control module 6 is referring to Figure 10, speech communication module 7-1, broadcast module 7-2, digital radio transport module 102-3, data communication interface 5, power management module 11-1, after, forward circuit 8-1 and 8-2, embed installation microwave sounding vehicle passing detection device 103 and all be connected power supply 11 and power management module 11-1 with the main control module 6 that contains demoder, the back is to driving circuit 8-1, forward circuit 8-2, embed microwave sounding vehicle passing detection device 103 is installed, main control module 6, speech communication module 7-1, broadcast module 7-2, digital radio transport module 102-3 connects.Main control module 6 is installed in the host computer control box of prior-warning device housing, and solar panel is installed in forward and backward display top.The independent microwave sounding vehicle passing detection device 102 of installing is by built-in wireless transmission real time data, the microwave sounding module adopts 315,000,000 digital radio transmitter module, 4 codings to the wireless module that main control module 6 sends data, and main control module 6 adopts 433,000,000 wireless transmitter modules to the independent wireless module that 102 transmissions of microwave sounding vehicle passing detection device are installed.Present embodiment adopts the two section of the NRF403 type 315/433MHZ monolithic radio transmitting and receiving chip of Shenzhen merchant Si Da industrial corporation to finish main control module 6 and the independent both-way communication that 102 of microwave sounding vehicle passing detection devices are installed as the core devices of digital radio transport module 102-3.Cable data communication interface 5 adopts the RS485 bus structure, and all inter-component data of prior-warning device connect all to be finished by bus.Power management module 11-1 mainly finishes management of charging and discharging when using solar cell, be responsible for backup battery is carried out float management when using civil power.

Embodiment uses the inside modules circuit all to adopt industry known technology.

Embodiment roads traffic collision early warning device workflow is referring to Figure 13.

Roads traffic collision early warning device of the present invention is in operation all own independent unique address, to identify its position and attribute in whole control of traffic and road system.The automatic unlocking condition of prior-warning device is to possess the environment low visibility simultaneously and detected vehicle to pass through this two conditions in highway is used, when two conditions all possess, main control module 6 is testing environment illumination again, open alarming device then, and adjust the brightness of alarming device luminescent device according to ambient light illumination; When being applied to " stain " zone, the prior-warning device entry condition is to have the condition that clashes, and for example has two cars and enters conflict point simultaneously or have the conflict of people's car.Roads traffic collision early warning device has the interface of networking, can with the host computer networking, when host computer requires needs to open prior-warning device according to integral body, can directly drive alarming device by network and open, also can only open early warning sign or literal; Host computer by network interface also only unlocking vehicle read the vehicle pass-through situation in detected highway section by detecting device 1; Prior-warning device also can be manually opened back to attention device 9 early warning pattern identifications by the button that resets certainly at the scene.After visibility is higher than threshold value, main early-warning conditions disappears, main control module 6 is sent the prior-warning device out code, prior-warning device will be closed, be that whole prior-warning device all is in closed condition, vehicle passing detection device 1, forward direction attention device 10 and back all quit work to parts such as attention devices 9, but main control module 6 is still in running order.Prior-warning device can recover standby in following two kinds of situations: the one,, when being in the low visibility state, and when having vehicle to pass through, next prior-warning device has detected vehicle to be passed through, next prior-warning device will discharge a last prior-warning device by network this moment, and this moment, this prior-warning device returned to holding state; The 2nd,, a fixed time after the heat of prior-warning device is released thermal source that receiving tube 2-1 receives and disappeared does not receive the thermal source signal again in this monitored space, this moment, prior-warning device changed holding state over to, the fixed time parameterisable is provided with, and present embodiment adopts time-delay in 30 seconds.Holding state is meant that the front and back in the prior-warning device close to the early warning sign, but vehicle passing detection device 1 test component such as grade still work, waiting for passing through of next vehicle, as new vehicle by the time early warning sign just can get back to duty; Permission will change the conditional parameter setting of holding state over to.

The roads traffic collision early warning device operational process:

After prior-warning device is activated, vehicle blocks the modulated laser signal of correlation by meeting, vehicle passing detection device 1 can detect the vehicle that passes through, vehicle passing detection device 1 is not distinguished has several chassis to pass through surveyed area actually, whether only detect has car to pass through surveyed area, can be released receiving tube 2-1 by the heat that subregion detects by the heat that vehicle produced, the signal that heat is released receiving tube 2-1 output will be described vehicle and pass through guarded region, to start the pre-attention device 10 of forward direction this moment, if at the pre-attention device 10 of forward direction vehicle rear that the high light directive that focuses on has just been passed through then at night, high light can form shadow in blind space and warn for the back car more significantly; The back starts synchronously to attention device 9, will show early warning pattern and early warning statement to the back car, for example: " there is car in the place ahead for 50 meters, please slow down and go slowly ".When prior-warning device was in networking operation, personalizable was provided with the service condition and the start-up parameter of two or two above prior-warning devices, during such as back car not or back spacing front truck when far away, can not start prior-warning device or the like.Parameters such as the brightness of the early warning information that this prior-warning device sends, color, reflection angle, demonstration wavelength are controlled, when group net operation, during the front car and rear car close together, the sign of can sending that temporarily no through traffic, when leading vehicle distance is far away, can send the deceleration traffic information.For increasing back back to attention device 9 to pre-alerting ability, when the front have vehicle to pass through and follow-up vehicle apart from leading vehicle distance when nearer, the back will be with more rapid frequency scintillation to attention device 9, start road profile display device such as supporting numerical control railway spike, numerical control profile mark simultaneously, note the place ahead and slow down crashproof to point out afterwards vehicle.When prior-warning device satisfies waiting condition, change standby over to.After front truck passed through, the early warning band that prior-warning device can stay the next one to be not less than 50 meters or 100 meters at the front truck rear portion moved ahead with car, and the early warning band contains numerical control railway spike, attention device sign, numerical control profile mark etc.When the vehicle dense degree was very high, this prior-warning device can work without cessation, with car after the early warning; When stopping in vehicle is in pre-police region, the back of prior-warning device can not stop fast blink and change the early warning statement to be closed until condition of work disappearance or prior-warning device to attention device 9.

Using roads traffic collision early warning device of the present invention provides the front truck rough location information can under the low visibility situation back car, the forward direction early warning can be given the vehicle prompting the place ahead of travelling road conditions with the back to early warning under the low visibility environment, make the follow-up vehicle phenomenon of taking measures in advance if having time to avoid knocking into the back take place, prevent traffic hazard, guarantee traffic safety; Collision avoidance system collaborative works such as board be marked, be induced to prior-warning device can with polychrome railway spike, the profile of associated controlled, is increased in turnpike driving pre-alerting ability under the low visibility situation; The pedestrian and the motor vehicle that can be " stain " and " blind spot " zone that enters road traffic provide information warning targetedly; Under utmost point low visibility or other situation about needing, prior-warning device is except that sending the visible early warning signal for the back car, and the early warning signal of can also sounding is strengthened forewarning function.

Roads traffic collision early warning device of the present invention is applied in highway and tunnel portal place as the anti-collision early warning under the low visibility environment, and effect is remarkable.

Claims (8)

1. roads traffic collision early warning device, it is characterized in that: comprise the vehicle passing detection device, the stoppage of vehicle detecting device, the walk detecting device, data reception module, the main control module, the forward direction attention device, the back is to attention device, driver module, data communication interface, speech communication and broadcast module, power supply, described back is equipped with light emitting diode matrix in attention device, light source and optically focused parts are installed in the described forward direction attention device, described vehicle passing detection device, the stoppage of vehicle detecting device, the walk detector output end is connected with data reception module, the data reception module output terminal is connected with the main control module, the main control module is connected with data communication interface, the data communication interface other end is connected with speech communication and broadcast module, main control module output terminal is by driving circuit and forward direction attention device, the back connects to attention device, power supply and vehicle passing detection device, the stoppage of vehicle detecting device, the walk detecting device, the main control module, the forward direction attention device, the back is to attention device, driver module, data reception module, speech communication and broadcast module connect.
2. roads traffic collision early warning device according to claim 1, it is characterized in that: described vehicle passing detection device adopts laser correlation vehicle passing detection device, this laser correlation vehicle passing detection device comprises Laser emission part and laser pick-off part, Laser emission part and the relative installation of laser pick-off part, described laser emission section branch comprises wireless control switch, modulation and controller, Laser emission module, and laser pick-off partly comprises laser pick-off unit, demodulation and controller.
3. roads traffic collision early warning device according to claim 1 is characterized in that: described vehicle passing detection device adopts visible light or non-visible light wave band correlation detecting device or microwave sounding detecting device or ultrasonic listening detecting device or ground induction coil detecting device or automatic identification detector of video or sound wave identification detector.
4. according to claim 1 or 2 or 3 described roads traffic collision early warning devices, it is characterized in that: described stoppage of vehicle detecting device adopts more than two or two heat to release receiving tube, each heat is released receiving tube by different forward angle series arrangement, the receive window that described heat is released receiving tube is installed on the spring support, and heat is equipped with the filter that sees through 6.5 μ m~8.6 μ m infrared waves before releasing the receive window of receiving tube.
5. roads traffic collision early warning device according to claim 4 is characterized in that: described walk detecting device adopts microwave detector.
6. roads traffic collision early warning device according to claim 5 is characterized in that: there are alert icon district and caution literal field in described back to the display surface of attention device, and the back is furnished with display surface early warning brightness regulation parts to attention device.
7. roads traffic collision early warning device according to claim 6, it is characterized in that: described main control module connects from resetting button, the main control module adopts the microprocessor of tape program control, described data communication interface configuration digitizing wireless communication interface and wire communication interface, the IP communication interface is adopted in the speech communication of described speech communication and broadcast module, and broadcast module adopts the digital recording chip.
8. roads traffic collision early warning device according to claim 7 is characterized in that: described power supply adopts solar cell.
CNB2007101566473A 2007-11-05 2007-11-05 Roads traffic collision early warning device CN100504954C (en)

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CN101986140A (en) * 2010-11-03 2011-03-16 陈伟 Method for obtaining visibility difference value of road traffic
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CN101419749B (en) * 2008-11-20 2010-04-14 陈伟 Low-visibility road traffic guiding method
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CN102684748A (en) * 2011-03-14 2012-09-19 中国移动通信集团公司 Method and device for laser-assisted document transmission
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CN107067817A (en) * 2017-04-17 2017-08-18 北京理工大学 It is a kind of to prevent the method and system of conflict in intersection for tramcar

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