CN101398977B - Electronic wireless traffic information indicating system and device for day and night - Google Patents
Electronic wireless traffic information indicating system and device for day and night Download PDFInfo
- Publication number
- CN101398977B CN101398977B CN2008102168355A CN200810216835A CN101398977B CN 101398977 B CN101398977 B CN 101398977B CN 2008102168355 A CN2008102168355 A CN 2008102168355A CN 200810216835 A CN200810216835 A CN 200810216835A CN 101398977 B CN101398977 B CN 101398977B
- Authority
- CN
- China
- Prior art keywords
- signal
- information
- vehicle
- wireless
- traffic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The embodiment of the invention provides a 24-hour electronic wireless system for indicating traffic information and a device thereof, which comprises a wireless launcher and a wireless receiver. The wireless launcher is arranged on a traffic light or a traffic guide board and used for directionally transmitting a first and a second digitally encoded wireless signals with varied spread velocities. The wireless receiver is arranged in a running vehicle and used for directionally receiving the first and the second wireless signals. The wireless receiver is also used for reading the contained digitally encoded information according to the received signals. Simultaneously, the wireless receiver calculates the distance between the vehicle and the traffic junction ahead and the relative velocity according to the phase time difference according to the received first and second wireless signals. The system of the invention is free of influence from weather condition and poor visibility. Therefore, the system is capable of providing 24-hour traffic information indication to the passing vehicles and controlling the running vehicles when necessary so as to prevent red light violation and dangerous driving. Simultaneously, the system can carry out relay transmission on the traffic information so that the succeeding vehicles can receive the relative information at the same time.
Description
Technical field
The present invention relates to a kind of transport information indication mechanism, particularly a kind of all-weather electronic wireless communication information indication mechanism and device.
Background technology
Traditional transport information indication mechanism and device mainly are traffic lights (abbreviation traffic lights) and traffic indication board (abbreviation guideboard), the information, road indication information, the target address information that comprise the traffic indication are provided, and the place ahead traffic information, weather information, or other traffic management information etc.
Beating the world has New York city,U.S red, yellow, that the traffic indication of green tri coloured lantern lay in 1918 and formally is born, apart from present whole 90 years history having been arranged.The appearance of three look stop-lights, for urban transportation has been brought revolutionary variation, its control system has developed into current controlling to electronics and computer intelligence also from the electrical control of the fifties, and urban transportation is progressively moved to maturity.
Yet the existing traffic indication mechanism that comprises this red, yellow, green tri coloured lantern and conventional traffic guideboard exists a weak point always and is not resolved, be exactly that all indications all will depend on vision, this is under the situation of weather conditions bad (for example heavy rain or thick fog), or for the personage that drives that the colour blindness anomalous trichromatism is arranged, its effect is obviously unsatisfactory.On highway, rely on vision and also can go wrong sometimes in addition, particularly under the foggy weather situation, the accident that automobile shunts into one another occurs through regular meeting.With regard to traffic accident, in fact become the first human killer.Over more than 100 year, the whole world is buried and has reached 4,000 ten thousand people under wheel, has surpassed during the World War II because of the dead number of the disaster of war.Entered since 21st century, the number that traffic hazard is died from the whole world every year has 600,000 approximately, and therefore, people claim that traffic hazard is the war on the current road.
The generation of traffic hazard except that with above-mentioned said and vision rely on relevant, the reaction of human pilot and to operate also be an important factor.The speed of a motor vehicle on the highway is very fast, and under the situation of bad weather, when accident took place suddenly, people's reaction had little time often, and this is why tens or more the reasons that car shunts into one another on highway are often arranged.Realize safe driving, except that will keeping the suitable speed of a motor vehicle and spacing, the relative velocity of being careful between the vehicle is also extremely important, when discovery sharply changes with the relative speed of a motor vehicle of front vehicles, will make reaction timely, also relevant information to be immediately passed to the vehicle of following simultaneously, make all vehicles can in time and make the generation that consistent reaction could be avoided tragedy effectively.According to statistics, during dangerous circumstances,, then can reduce 30% of rear-end collision respectively if can give the pretreatment time of driver's half second, 50% of the relevant accident in road surface, therefore effective vehicle early warning prompt system to the safety traffic of vehicle with extremely important.
Realize that the early warning that vehicle bumps against must have effective device for dynamically measuring distance, mainly be laser and radar (microwave) in the prior art at present, adopt the device of these technology can in the vehicle that travels, launch laser or microwave signal, find range (time difference or the frequency displacement of measuring transmitting/receiving signal) in the echo of front vehicles reflection according to these signals then, when finding dangerous situation, just carry out dangerous tip or self-actuating brake in case with the collision happens in the place ahead.The main deficiency of this system is the technology more complicated and occurs easily disturbing, because the situation of road driving is very complicated, when vehicle is more, closeer, or overtake other vehicles, when turning round, or when special sign or billboard are arranged by the road, the waveform of its reflection is difficult to prediction sometimes, and this situation causes the appearance of false alarm or maloperation situation easily; Because this system can't detect existing traffic signal lamp system or carry out information communication with other vehicle, therefore also have no idea to prevent to speed through a red light or prevent of the collision of other vehicle simultaneously to this car; Laser and radar signal cause electronic pollution to environment easily simultaneously, if because there are many cars that similar system has been installed in same environment, then interference each other is difficult to avoid sometimes; The cost of last this technology is also higher relatively, and the application that carry out universalness in all vehicles exists sizable difficulty.
Summary of the invention
Technical matters to be solved by this invention is, deficiency at above-mentioned existing product technology, a kind of dynamically new technology of range finding that in driving vehicle, realizes that provides, a kind of round-the-clock electronic wireless traffic information indication mechanism, and round-the-clock vehicle safe driving indication and control device, this technology, system and device are wireless, dynamically, real-time and all weather operations, and do not rely on people's vision system, even do not depend on people's reaction and carry out emergency circumstance processing automatically to eliminate the dangerous situation that may occur, and associated danger information in time can also be passed to front vehicle, to prevent the generation of the accident that shunts into one another on the highway.
In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of method that dynamic distance detects and information is transmitted that realizes in driving vehicle, may further comprise the steps: synchronous first and second wireless signal of directional transmissions on first vehicle or objects in front, first wireless signal is used for the synchronous of time, and second wireless signal is used for the measurement of distance; Receive described first and second wireless signal in second vehicle directional, and calculate on second vehicle and first vehicle between, or and objects in front between relative distance.
The present invention also provides a kind of all-weather electronic wireless communication information indication mechanism and device, comprise: wireless launcher, be installed on traffic lights or the traffic guideboard, be used for have nothing in common with each other and first and second the encoded wireless signal of directional transmissions velocity of propagation; Radio receiver, be installed among the driving vehicle, be used for described first and second wireless signal of directive reception, and according to the signal deciphering coded message wherein that is received, also calculate simultaneously according to the phase time difference of first and second wireless signal that is received and the place ahead traffic lights or traffic guideboard between distance, and, calculate relative velocity between the two by continuous coverage to described distance.
The present invention also provides a kind of all-weather electronic wireless communication information indication mechanism device, comprising: infrared transmitting device, be installed on traffic lights or the traffic guideboard, and be used for the encoded infrared signal of directional transmissions; Infrared receiver is installed among the driving vehicle, is used for the described infrared signal of directive reception, and understands coded message wherein.
The present invention also provides a kind of all-weather electronic wireless communication information indication mechanism device, comprising: ultrasonic transmission device, be installed on traffic lights or the traffic guideboard, and be used for the known and encoded ultrasonic signal of directional transmissions frequency; Ultrasonic probe, ultrasonic receiver is installed among the driving vehicle, is used for the described ultrasonic signal of directive reception, and understands coded message wherein, also calculate simultaneously according to Doppler effect and the place ahead traffic lights or traffic guideboard between relative velocity.
The present invention also provides a kind of all-weather vehicle driving safety indication and control system device, comprise: wireless launcher, be installed on the afterbody of operational vehicle, be used for have nothing in common with each other and first and second encoded wireless signal of directional transmissions velocity of propagation under specific circumstances; Radio receiver, be installed on the place ahead of operational vehicle, be used for described first and second wireless signal of directive reception, and according to the signal deciphering coded message wherein that receives, also calculate simultaneously according to the phase time difference of first and second wireless signal that is received and front vehicles between relative distance, and the continuous coverage by adjusting the distance, calculate and front vehicles between relative velocity.
The present invention also provides indication of a kind of all-weather vehicle driving safety and control system device, comprising: infrared transmitting device, be installed on the afterbody of operational vehicle, and be used for the encoded infrared signal of directional transmissions under specific circumstances; Infrared receiver is installed on operational vehicle the place ahead, is used for the described infrared signal of directive reception, and understands coded message wherein.
The present invention also provides indication of a kind of all-weather vehicle driving safety and control system device, comprising: ultrasonic transmission device, be installed on the afterbody of operational vehicle, and be used for the known and encoded ultrasonic signal of directional transmissions frequency under specific circumstances; Ultrasonic probe, ultrasonic receiver is installed on the place ahead of operational vehicle, is used for the described ultrasonic signal of directive reception, and understands coded message wherein, also calculate simultaneously according to Doppler effect and front vehicles between relative velocity.
The beneficial effect that the present invention has is: one, it is a system that does not rely on weather conditions and vision; Two, it can be worked under round-the-clock environment; Three, it can show the information of traffic light signal and provide the countdown information that cresset is changed; Four, it has and prevents the function that speeds through a red light automatically; Five, it can show distance and the relative velocity with front truck; Six, it can be controlled automatically to the transport condition of vehicle under dangerous situation; Seven, it can pass to front vehicle with relevant traffic light signal information and dangerous information; Eight, it can carry out the demonstration/prompting of other Traffic Information; Nine, it is a kind of environmental protection signal system of not having electronic pollution; Ten, it has cheap cost and is easy to do the application of universalness.Generally speaking, enforcement of the present invention can effectively improve the usefulness of road traffic, and makes the personage's that drives safety more secure.
Description of drawings
Fig. 1 is the electronic wireless traffic lights and the road vehicles signal transmission synoptic diagram of the embodiment of the invention;
Fig. 2 is the transmission of wireless signals synoptic diagram between the driving vehicle of the embodiment of the invention;
Fig. 3 is the transmission of wireless signals signal that the vehicle of the embodiment of the invention changes line/when overtaking other vehicles;
Fig. 4 is the wireless digital coded signal waveform synoptic diagram of the embodiment of the invention;
Fig. 5 is the traffic/information of vehicles indication/prompting synoptic diagram of the embodiment of the invention;
Fig. 6 is the traffic guideboard information demonstration/indication synoptic diagram of the embodiment of the invention;
Fig. 7 is the synoptic diagram about the angle modification of distance of the embodiment of the invention
Fig. 8 is the wireless signal relaying synoptic diagram between the driving vehicle of the embodiment of the invention;
Fig. 9 is the traffic lights of the embodiment of the invention and the wireless signal relaying synoptic diagram between the vehicle;
Figure 10 is the general structure block diagram of the embodiment of the invention;
Figure 11 is the process flow diagram of realizing dynamic distance detection and information transmitting methods in driving vehicle of the embodiment of the invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.Please refer to shown in Figure 1ly, this is the electronic wireless traffic lights of the embodiment of the invention and road vehicles signal transmission synoptic diagram.10 is three look traffic lights among the figure, include red, green, blue tri coloured lantern 11, inside is equipped with wireless launcher 12, in 12, include two groups of transmitters, wherein launch the first wireless encoding signal (preferred infrared ray) 13 for one group, and another group emission second wireless encoding signal (preferred ultrasound wave) 15,13 and 15 emissions are simultaneously also received by the vehicle relative with traffic lights 16, wherein 17 for being installed on the radio receiver of front part of vehicle, can receive above-mentioned infrared signal 13 and ultrasonic signal 15, the rarest one group of signal packet contains the digital code information relevant with the traffic light signal state in 13 and 15, this information is received by radio receiver 17 and decodes, restore red, yellow, show in green three look traffic lights signals and the display device in car 18, display device 18 also includes the audio prompt device and is installed on the bridge or panel board of vehicle, check with the personage that conveniently drives, or make relevant prompting driving the personage.
The present invention can realize that the reception of round-the-clock dynamic information and the key of indication are to adopt the wireless signal with round-the-clock orientation works ability to carry out transmission of Information.Infrared ray (the particularly infrared ray of 8～14 micron wave lengths) and the transmittability of ultrasound wave (the particularly ultrasound wave about 20 KHz) in atmosphere are all very strong, be subjected to the influence of airborne light, thick fog, dust, rainwater, wind and snow and electromagnetic interference (EMI) hardly, two kinds of signals all more can adapt to boisterous situation than people's vision, even night is also unaffected fully, be the key that realizes all weather operations.In addition, the wireless signal that can realize the phasing signal emission also has microwave and laser etc., therefore the present invention does not get rid of and uses above-mentioned signal to carry out the transmission of information, but because infrared ray and ultrasound wave are present two kinds of the most cheap and safe signals, neither can produce injury to human body and vision, also can not cause simultaneously the electromagnetic wave in the space to pollute, be a kind of environmental protection signal source, is first-selection of the present invention (preferably) signal source therefore.
The reason that the present invention adopts two groups of wireless signals to launch simultaneously is for vehicle can calculate distance and speed between car and the traffic lights according to these two groups of wireless signals, so that remind the attention of driving the personage when needed.Two kinds of wireless signals of the present invention are in airborne velocity of propagation difference, infrared signal is to propagate (300,000 kilometers of per seconds) with the light velocity, therefore we do not need to consider the delay of its transmission, and ultrasonic signal is 340 meters of per seconds (15 degrees centigrade time) in airborne velocity of propagation, it is slow a lot of that the relative infrared ray of this speed is wanted, therefore receiver 17 is that mistiming according to the above-mentioned two kinds of unlike signals that receive is (because signal can be encoded and modulate, therefore we claim that also this mistiming is phase time difference or phase differential) differentiate the distance of vehicle and traffic lights (in fact signal can be modulated to the distance between vehicle and the stop line), specific algorithm is: S=V* Δ T, wherein S is the distance between receiver and the transmitter, V be ultrasound wave in airborne velocity of propagation, Δ T is that infrared ray and hyperacoustic phase time are poor.
Owing to can measure the distance between emitter and the receiving trap in real time, therefore system of the present invention also has the ability of the kinetic measurement speed of a motor vehicle simultaneously, just can calculate the real-time speed of a motor vehicle of vehicle by continuous coverage to fixed transmission sign (for example above-mentioned signal lamp) distance, this helps and the transport condition of vehicle is made prompting or adjust, in order to realize this function, in system shown in Figure 1, also further include the anti-device 19 that speeds through a red light, 19 are actually a controlling device for vehicle running, can make necessary prompting to the driver according to the speed of a motor vehicle and from the distance of red parking line whenever necessary, also can implement braking whenever necessary automatically, so that vehicle can safety stop before stop line.
Please refer to shown in Figure 2ly below again, this is the transmission of wireless signals synoptic diagram between the driving vehicle of the embodiment of the invention.20 vehicles that travel for the place ahead among the figure, 24 vehicles for the rear follow-up, when under certain particular case when brake hard or bright danger light (for example), front vehicles 20 can be by being installed on the vehicle afterbody wireless launcher 21 directional transmissions wireless signal backward, wherein 22 is infra-red code signal (first wireless signal), 23 is ultrasound wave coded signal (second wireless signal), and 22 launch simultaneously with 23 and have an identical phase place.Front vehicle 24 is equipped with wireless receiver 25 in the vehicle front position, can receive above-mentioned wireless signal simultaneously also can decode to signal, distance and relative velocity before and after basis phase time difference between the two calculates then between the vehicle, and from decoded information, know the transport condition information of front vehicles, so that in car, show and point out by 26.When dangerous situation occurs, front vehicle can also be controlled by the travelling of 28 pairs of vehicles of automatic ride control device that is installed in the car, for example stop supplying fuel or carry out brake hard etc., to avoid or to eliminate the danger that is occurred, therefore 28 also can be called the automatic collision device.
Please refer to shown in Figure 3ly below again, this is the transmission of wireless signals signal that the vehicle of the embodiment of the invention changes line/when overtaking other vehicles.30 are the vehicle of the place ahead left-lane in travelling among the figure, 35 are the vehicle of rear right lane in travelling, when the place ahead vehicle 30 is prepared to overtake other vehicles when entering right lane, wireless launcher 31 that can be by being installed on the afterbody right side is to right back directional transmissions wireless signal (synchronous with the right turn lamp), wherein 32 is the infra-red code signal, 33 is the ultrasound wave coded signal, and 32 launch simultaneously with 33 and have an identical phase place.The radio receiver 36 that is installed on rear right lane vehicle 35 left front portions receives above-mentioned wireless signal simultaneously and decodes, distance and relative velocity before and after basis phase time difference between the two calculates then between two cars, and from decoded information, know the right-hand rotation information of front vehicles, and in car, show and point out by 38.In actual conditions, can be according to the position and the quantity of angle, sensitivity and the coverage rate decision emission and the receiving trap of the structure of vehicle and signal emission/reception, make rear view of vehicle and left back, right back all have the emissive ability of signal, so that when braking state, precarious position, left-hand rotation and right-hand rotation state, can both send the wireless encoding signal that includes described status information and have suitable coverage rate, and can receive from the place ahead and the wireless signal left front, that the right front makes progress to correct direction.
Please refer to shown in Figure 4ly below again, this is the wireless digital coded signal waveform synoptic diagram of the present invention that is used for above-mentioned Fig. 1, Fig. 2 and system shown in Figure 3.40 is the infra-red code signal waveform that receives among the figure, and 41 is the ultrasound wave coded signal waveform that receives.Although these two signals all are the same at the waveform of transmitting terminal with phase place, but because emission has certain distance between receiving, and two kinds of signals transmission speed have nothing in common with each other, therefore signal just has a mistiming in the waveform that the take over party saw, we also this mistiming are called phase differential or phase time is poor.It is poor that T1, T2 have just showed the phase time of these two signals among the figure, and T3 also is that the phase time of these two signals is poor, only its position difference of measuring.Can adopt different coded systems for signal, the most frequently used is adopts the numerical coding of " 0 " and " 1 ", and defines with the time length of the high-low level of signal pulse.In the drawings, digital " 0 " is represented at the relative narrow interval with of pulse, and numeral " 1 " is represented at the relative wide interval with of pulse, and the definition mode of other different coding and numeral can also be arranged in real system.Whether in order to discern two waveforms (packet) is the data of same period emission, the cognizance code (ID) that in above-mentioned waveform, has also comprised packet, the ID of previous ripple is 0110 in Fig. 4, the ID of the ripple in back is 0111, the waveform of system only can be identical with having (or relevant) ID compares, the situation that can just not have the waveform dislocation has like this occurred, and promptly can realize the signal Synchronization on the receiving trap.
Below by some concrete data instances and make relevant calculation and analysis, suppose that above-mentioned waveform is from system shown in Figure 2, and two cars at the uniform velocity travel with 100 kilometers speed per hour before T1, suppose that simultaneously the T1 that is surveyed is 88.2 milliseconds, T2 is 86.0 milliseconds, the time interval between T1 and T2 is 0.1 second, then can calculate two following distances of two cars when T1 and T2 thus according to the formula of above-mentioned S=V* Δ T and (suppose that temperature is 15 degrees centigrade for about respectively 30.00 meters and 29.24 meters, hyperacoustic velocity of propagation is 340 a meters/per second), promptly the distance of two cars has changed 0.76 meter between 0.1 second, the variation of this time and distance is reacted for general driver and is not come over, but for system of the present invention, not only can accomplish easily, can also go out simultaneously to exist between two cars average acceleration of negative 7.6 meter per seconds square according to the change calculations of above-mentioned distance, and judge front truck according to above-mentioned acceleration and carrying out brake hard (bringing to a halt), because press 100 kilometers speed per hours and negative 7.6 meters average acceleration, then front truck can and stop after 50.8 meters to overtake at 2.58 seconds, if the vehicle of at this moment trailing does not carry out brake hard synchronously, then the rear-end impact accident just may take place at any time.
Therefore at the travel controlling system described in Fig. 2, just can play important effect under above-mentioned this critical situation, because electronic installation can be reacted in the very short time (for example 0.1 second), a traffic accident may will thereby be avoided.System of the present invention can realize adjusting the distance between two cars, the continuous detecting of speed and acceleration, with the reliability that increases system and avoid the error brought because of accidentalia or interference.In above-mentioned example, analyzed the range information that (for example 42,43 and 45,46) comprise between the corresponding packet, and further calculated acceleration between the two in view of the above.In addition, can also detect, this point is done further to analyze and explanation below in conjunction with Fig. 4 in any one pulse position of a packet.42 is first packet of infrared signal among the figure, and 45 is second packet of infrared signal, and each packet all has leading waveform portion 421/451, numerical coding district part 422/452.Similarly, also include two ultrasound data bags 43 and 46 among the figure, each packet also all has leading waveform portion 431/461, and numerical coding district part 432/462.T1 and T2 just in leading waveform the phase time difference to two kinds of different wireless signals in the same packet (having identical ID) compare, because the time interval between packet is relatively grown (for example 0.1 second packet), therefore the present invention also provides a kind of sample mode faster here, exactly after receiver has effectively been discerned the same packet (having identical packet ID) of two different wireless signals, just can carry out measurements and calculations on any one pulse signal on this packet, this state is called as the synchronous detection state.For example T3 measures on the rising edge of first pulse in numerical coding district, similarly also can on the rising edge of subsequently each pulse or negative edge, measure, the time interval of so each sampling just can shorten dramatically, this has not only increased the reaction velocity of system, can also analyze a plurality of measurement data simultaneously, can improve the reliability of system and eliminate the accuracy of individual data sample error effect to systematic survey.If system receives the information of brake hard from front truck numerical coding wireless signal, and confirmed also that from actual detected this situation takes place, it is necessary then this car being implemented brake hard, is the effective method that prevents car to car impact.In order to make relevant judgement more accurately and reliably, front truck can also send its speed and acceleration information except that the information that sends relevant brake hard, so that the differentiation of front vehicle and reaction can be accomplished is perfectly safe.
Indication/prompting synoptic diagram as for traffic/information of vehicles of the present invention is then seen shown in Figure 5.A digital display area is arranged among the figure, can show the data of various measurements, for example distance, speed, acceleration, two cars time (based on current vehicle speed) apart etc.Above-mentioned speed can be the relative velocity of Ben Che and front truck, also can be and the fixing speed between the speed(-)limit sign (can be installed on directly over the track or be embedded in and expose emitting head under the track), because this speed(-)limit sign is fixed, so the speed that vehicle is measured is the speed of a motor vehicle of self; Simultaneously also because this speed(-)limit sign also has the emission/propagation function of speed limiting information, therefore system of the present invention can directly show hypervelocity information, and when being necessary, implement deceleration-operation, for example reduce oil mass supply etc., realize steadily being decelerated within the speed limit by travel controlling system.Outside the digital display area, information red, yellow, the green traffic cresset is then arranged, and information such as roadblock, hypervelocity, danger.As for dangerous tip information, be to make after system compares analysis with various data, these information comprise the status information that front truck sends over, and parameter such as the current speed of a motor vehicle of this car, distance that two cars are separated by and relative acceleration, if when finding that the collision time is less than a certain numerical value then point out, if dangerous situation further increases, holding fire just can cause the consequence that to retrieve the time, system just can start travel controlling system and implement Braking mode, so that dangerous situation is controlled within the yardstick that can grasp.Slow or be the situation (for example when traffic intersection waits red signal) that has stopped for the speed of a motor vehicle, or front vehicles has the speed that is not less than this car, and situation with positive acceleration, for example when the left side, the place ahead vehicle shown in Figure 3 is normally overtaken other vehicles, then need not to send cue, drive normally with interruption-free.In the suggestion device of native system, also include the audio prompt function, occur as dangerous situation, or during the signal lamp state variation, or when having new information to enter, can make corresponding prompt, can also send different prompt tones according to different situations, so that the driver can prepare different actions according to different prompt tone, to increase the efficient that road traffic travels and to improve the security of driving.
System of the present invention also further has electronics guideboard demonstration/deixis, and these functions are seen shown in Figure 6.Can see among the figure left side is arranged, preceding, right three arrows that travel, can light different display segments according to different situations, to express current RST.All respectively there is a viewing area front, rear, left and right in the arrow district, can show position and the destination information of different directions and the information of expressway exit etc. that vehicle is current.Therefore guideboard information and traffic lights information also can be described as a wireless electron guideboard and wireless electron traffic light apparatus from guideboard of setting up on the road and traffic lights.Compare with conventional guideboard and traffic lights, therefore electronics guideboard and electronic communication lamp biggest advantage are that it is a round-the-clock signal system, no matter be which kind of weather, system all can normally receive in car and show/point out the information of being correlated with, make driving more convenient, also safer.Simultaneously it can also show the information that other is additional, and the countdown information of display lamp number conversion for example can be slowed down before red light is arrived in advance, prepares and also can do starting earlier before green light arrives, with the efficient of raising road traffic.In addition can the display speed restricted information, roadblock information, the information of going slowly, walkway information, the place ahead traffic information, Weather information, and other traffic management information etc.
What be careful is, the range data that system-computed according to the present invention is come out sometimes also needs do necessary compensation/correction and could satisfy its accuracy requirement.Relevant compensation/correction mainly contains two aspects, and the one, temperature is to the influence of ultrasonic propagation velocity.Known to experiment, between aerial velocity of propagation of ultrasound wave and the temperature following corresponding relation is arranged, wherein temperature unit is ℃, velocity of sound unit is a meter per second:
| Temperature | -30 | -20 | -10 | 0 | 10 | 15 | 20 | 30 |
| The velocity of sound | 313 | 319 | 325 | 331 | 337 | 340 | 343 | 349 |
What another need be revised is the influence at wireless signal transmission angle, and relevant situation please see Figure the synoptic diagram of the embodiment of the invention shown in 7 about the range finding angle modification.70 is the wireless launcher of electronic signal light/electronics guideboard among the figure, and 71 for being installed on the radio receiver of vehicle front, is air line distance S between 70 and 71 according to the relative distance of above-mentioned relevant embodiment calculating.In actual use, the driver only can be interested in the distance D of stop line 72 vehicle 71, therefore must utilize triangle length of side formula (Pythagorean theorem: S square equal H square add D square) come the air line distance S of receiving trap gained is revised.In order to realize that this revises, must include the information of its height H in the received wireless digital coded message of receiver.
Also do not mention repeat transmitted (forwarding) problem of relevant wireless signal in the above-described embodiment, in fact this problem is also extremely important, under the dangerous situation of for example mentioning, can implement brake hard (bringing to a halt) to eliminate the vehicle collision accident that may occur to vehicle in the above by travel controlling system.But bring to a halt on highway itself also is breakneck operation, because vehicle subsequently also can face same collision problem, if deal with the accident that also may occur shunting into one another improperly.Address this problem, must make vehicle subsequently know the place ahead occurrence and take consistent brake measure, the accident that shunts into one another just can effectively be avoided, and this just needs the function of a repeat transmitted.
Fig. 8 is the wireless signal relaying synoptic diagram between the driving vehicle of the embodiment of the invention.Have 80,81,82 to be three vehicles in road traveling among the figure, 81 follow in 80 and travel, and 82 follow in 81 and travel.When 80 brake hards of the place ahead vehicle (or sending the hazard lamp signal), can send infra-red code signal 801 and ultrasound wave coded signal 802 backward, include the wireless digital content relevant with braking or danger signal, and after vehicle 81 subsequently receives this information, can in time transmit relevant information by 811 (infrared) and 812 (ultrasonic) backward, order vehicle 82 subsequently also receives the 80 brake hard information of sending at one time.Similarly, 82 also can send described 80 information more backward, make the more vehicle in back know the situation in the place ahead, so just can avoid the generation of the accident that shunts into one another on the highway effectively.When 81 transmit 80 information, can be to doing some processing for information about, for example keep 80 brake hard or dangerous cresset information, revise, make rear 82 can draw itself and the distance between 81 but not and the range information between 80 according to the signal that receives but the phase place of 81 signals is done some.
Fig. 9 then is the traffic lights of the embodiment of the invention and the wireless signal relaying synoptic diagram between the vehicle.90 is electronic communication lamps among the figure, (901-is infrared for the wireless encoding signal that it sends, 902-is ultrasonic) be installed on the stop line 91 relay 91 (for convenience, both have identical Reference numeral 91) receive and give vehicle 92 (infrared signal forwarding by 911-, 912-is ultrasonic), again signal forwarding is given vehicle 93 subsequently (infrared after receiving relevant traffic light signal information when 92 by 921-, 922-is ultrasonic), and can be delivered to last vehicle (also can be set in for several times and stop the relaying forwarding behind the relaying) always.90 and 91 signal all includes the information of its setting height(from bottom), and receiving trap can be revised relevant distance.In fact for 92, its care be and stop line 91 between distance, so the information that repeater 91 is transmitted should be with 91 starting points as distance calculation.In fact 90 wireless signals that send also may directly be received by 92, therefore 90 must carry out pre-service (mainly being that the phase place of ultrasonic signal is adjusted) to the wireless signal of its emission, and making 92 distances that draw according to signal is with respect to the distance of stop line 91 but not the distance of signal lamp 90.Similarly, also should be from the distance of stop line 91 for 92 range informations that are transmitted to 93 traffic lights but not, promptly be to make front vehicle know how far also have apart from stop line (crossing) from 92 distance.
Relay 91 also can connect by special-purpose cable 95 or other radio channel (being designated hereinafter simply as the 3rd signalling channel) except directly receive the wireless signal from emitter 90 by air.In this case, relay 91 can adopt metal construction and part to be embedded under the stop line, only need expose emitting head carries out signal relay and just can, an advantage of this way is to avoid the pedestrian when road is crossed on the walkway, or other lateral vehicle produces 90 signal when travelling the crossing and blocks, because 91 forwards are faced the vehicle on the track, its emission and reception are optimal simultaneously.This emitter that buries under stop line can also be launched the travel direction information that includes the particular row track, and the information on the target ground that moves ahead and speed-limiting messages etc.The relay of the embodiment of the invention has the ability of signal reduction, can restore infrared signal and the ultrasonic signal identical according to the signal of third channel with original signal, also to make phase place between the two identical or relevant in the signal phase of relay point simultaneously, perhaps restore infrared ray and hyperacoustic coded message and carry out repeat transmitted according to single infrared ray or hyperacoustic coded message with original signal.
Figure 10 is the general structure block diagram of the embodiment of the invention, is a summary to the described embodiment of Fig. 1 to Fig. 9.100 is electronic communication lamp of the present invention or electronics guideboard device among the figure, and it consists predominantly of wireless transmit apparatus 101,101 and includes infrared transmitter and ultrasonic transmitter, and relevant coding controller and packet ID unit.Have traffic lights information, the traffic lights that are connected with 101 change lamp countdown information, electronics guideboard information and other relevant information unit, and also include the information of its setting height(from bottom) and the information of air themperature etc., receiving trap is received can carry out temperature compensation and angle modification to the distance parameter that draws afterwards.
The radio receiver 112 that the infra-red code signal 107 of 101 emissions and ultrasound wave coded signal 108 are installed on the driving vehicle 110 receives.Include in 112 and 101 corresponding infrared receiver and ultrasonic receivers, and relevant decoding and packet lock unit, the infra-red code signal and the ultrasound wave coded signal that can detect received packet ID and will have identical or a correlation ID carry out the phase bit comparison to calculate the air line distance between wireless launcher and the wireless receiver.The information that radio receiver 112 receives can show and points out by information display device and audio prompt device.In order can effectively to analyze to the data of calculating, also include the sensor input media in the safety driving system 111 in the car, the data such as the speed of a motor vehicle, throttle of this car can be provided, make system when finding that (for example the speed of a motor vehicle is too fast, spacing is too near, front truck brake hard etc.) appears in dangerous situation, can control the throttle and the brake system of vehicle by controlling device for vehicle running.In order the data that be received to be compensated and to revise, also include the information of setting height(from bottom) and the information of other setting in 111, data as for temperature compensation can adopt this car temperature value measured, also can adopt the temperature information that comprises in the received signal.
Also include a cover wireless launcher 116 in the driving vehicle 110, include infrared transmitter and ultrasonic transmitter in 116, and relevant coding controller and packet ID unit, can launch infra-red code signal 118 and ultrasound wave coded signal 119.What link to each other with 116 has vehicle running state message unit 115, other relevant information unit 117 and 111 above-mentioned system and devices.116 according to 111,115 and 117 information decision whether launch 118,119 signals, and the decision coded message that transmits and comprise, these information can include the transport condition of this car, for example brake hard, danger light, steering indicating light information, can comprise information such as the speed of vehicle and acceleration in addition, so that the operation that relevant safety traffic could be pointed out and implement to thereafter vehicle according to the information that receives is followed in order.In addition, 116 can also use as relay, can transmit 100 emissions and pass through 111 digital code information that receive, the signal of transmitting can keep the coding and the phase place of received signal, also can change or add the information and the phase place of vehicle, this will seem actual conditions and need and decide.
Please see Figure 11 at last is process flow diagrams of realizing dynamic distance detection and information transmitting methods in driving vehicle of the embodiment of the invention, wherein:
Step S1101 is synchronous first and second wireless digital coded signal of directional transmissions on first vehicle or objects in front, and first signal can be used for time synchronized, and secondary signal can be used for range observation;
Step S1102 receives first and second above-mentioned wireless digital coded signal in second vehicle directional, and the preferred infrared ray of the present invention is first wireless signal, and ultrasound wave is second wireless signal;
Step S1103 is that second vehicle is handled the signal of receiving, finds out the packet that has identical data packet ID in first and second wireless signal, and the phase time that detects between the two is poor;
To be second vehicle calculate between second vehicle and first vehicle according to the phase time difference of first and second wireless signal of above-mentioned detection step S1104, or and objects in front between distance;
Step S1105 be second vehicle during according to received signal air themperature and this temperature the influence of velocity of propagation in air compensates and data correction to related wireless signal;
Step S1106 is that second vehicle is decoded to the coded message that the wireless signal that is received comprises, and can therefrom restore numerical information originally, thereby realizes transmission for information about;
Step S1107 is second vehicle obtains the emitter setting height(from bottom) from the numerical information of reduction a information, and according to this elevation information above-mentioned distance parameter is revised;
Step S1108 is the second vehicle continuous detecting and obtains above-mentionedly through compensation and the distance parameter revised, and goes out between the two relative velocity and acceleration by the change calculations to time gap;
Step S1109 is that second vehicle according to circumstances needs to transmit first, second wireless signal that is received, and can handle original signal, makes it include the relevant information of second vehicle.
In all the above embodiments, launch simultaneously with infrared signal and ultrasonic signal basically and receive and make relevant the description.In real system, if do not need to do the measurement of distance, just then only need wherein a kind of wireless encoding signal of emission passable, therefore single wireless signal transmission can be seen a special case of system as.For example can adopt infrared ray or ultrasound wave digitally encoded signal to come directed traffic lights and the traffic guideboard information transmitted, realize round-the-clock transport information indication; Also can come vehicle rearward to transmit the status information of vehicle ', for example brake hard, danger, turn to it, and information such as speed and acceleration, prevent to hit mutually the driving that realizes safety thereby make front vehicle can obtain relevant prompting.For the ultrasonic signal that adopts fixed-frequency, the vehicle that receives signal can also utilize Doppler effect to calculate relative velocity between transmitter and the receiver according to the variation of its frequency.No matter adopt one or both signal emissions, notion and principle described in the invention all are suitable for.
About infrared ray of the present invention and hyperacoustic transmission range problem, this is relevant, also relevant with the form of signal frequency/wavelength and signal encoding simultaneously with factors such as the signal emission angle of transmitter, signal transmission powers.In general, the infra-red carrier signal of 8～14 micron wave lengths can be realized surpassing 1000 meters signal transmission under non-relay situation, adopts 200 meters transmitting range then enough in system of the present invention.For ultrasonic signal, the distance of its transmission is shorter than infrared signal usually, the finding range of the ultrasonic range finder of at present the most frequently used 40KHZ frequency is generally about 15 meters, according to square attenuation characteristic that be directly proportional of ultrasonic signal absorptivity with frequency, frequency is that the ultrasonic acoustic absorptivity of 40kHz is approximately 4dB/m, frequency is that the ultrasonic acoustic absorptivity of 20kHz then has only 1dB/m, and therefore hyperacoustic finding range rises to about 60 meters when 20KHZ.Because the present invention has adopted with the echo of stadimeter and received the different direct signal reception method of method, its finding range is far away more than one times than stadimeter, and promptly about 120 meters of air line distances, this is enough for system of the present invention.Even also be feasible in fact apart from lacking some again, can adopt the stronger infrared signal of emissive ability to carry out the transmission of transport information and the early warning of dangerous situation in actual applications, and within distance enters the scope of ultrasonic ranging the time, the ultrasound wave part is just started working, and in case of emergency start the safety traffic control device, thereby realize that effective anti-collision hits safe driving.
About the above Doppler effect of mentioning herein, ultrasonic ultrared characteristic and the emission/contents such as reception of involving, be the known technology in the association area, this paper is not described further at this.As herein described simultaneously only is part preferred implementation of the present invention; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. an all-weather electronic wireless communication information indication mechanism device is characterized in that, comprising:
Wireless launcher is installed on traffic lights or the traffic guideboard, is used for have nothing in common with each other and first and second the encoded wireless signal of directional transmissions velocity of propagation;
Radio receiver, be installed among the driving vehicle, be used for described first and second wireless signal of directive reception, and understand wherein coded message according to the signal that received, also calculate simultaneously according to the phase time difference of first and second wireless signal that is received and the place ahead traffic lights or traffic guideboard between distance.
2. the system as claimed in claim 1 device is characterized in that described receiving trap further includes information display device, is used for the driver is carried out the demonstration of relevant information.
3. the system as claimed in claim 1 device is characterized in that described receiving trap further includes the auditory tone cues device, is used for the driver is carried out the prompting of relevant information.
4. the system as claimed in claim 1 device, it is characterized in that described receiving trap further includes controlling device for vehicle running, when system according to be potentially dangerous situation or when stopping row information of the signal discovery that receives, can control the transport condition of vehicle by travel controlling system, reducing or to eliminate described danger, or before stop sign, stop.
5. the system as claimed in claim 1 device is characterized in that further including signal relay device on the means of transportation of described signal transmit direction, and:
Described relay receives simultaneously and transmits first and second wireless signal, and makes the coding of this first, second wireless signal and phase place identical in the coding and the phase place of this relay point with former first, second wireless signal; Or
Has independent the 3rd signalling channel between the emitter of described relay and first and second wireless signal, this relay restores first and second wireless signal according to the 3rd received signal, and make the coding of this first, second wireless signal and phase place identical in the coding and the phase place of this relay point with former first, second wireless signal, and then first, second wireless signal that will reduce is launched.
6. the system as claimed in claim 1 device, it is characterized in that described operational vehicle further includes the signal relay unit, and: described TU Trunk Unit receives first and second wireless signal simultaneously by the vehicle front receiving trap, and described signal is handled according to actual conditions, make it promptly include the place ahead traffic indication information, include the coded message relevant again, then treated signal is passed through emitter directional transmissions backward with current vehicle-state.
7. the system as claimed in claim 1 device, it is characterized in that described first signal is an infrared signal, reaching secondary signal is ultrasonic signal, and first, second wireless signal includes identical or relevant coded message and synchronized transmissions, to realize reaching fast continuous DATA REASONING.
8. system and device as claimed in claim 7 is characterized in that the described numerical coding that is encoded to, and includes packet ID and setting height(from bottom) information, makes receiving trap can realize that Data Receiving is synchronous, and measured range data is carried out angle modification.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102168355A CN101398977B (en) | 2008-10-13 | 2008-10-13 | Electronic wireless traffic information indicating system and device for day and night |
| US13/122,968 US20110196580A1 (en) | 2008-10-13 | 2009-10-10 | Wireless traffic information indicating method and system |
| PCT/CN2009/074388 WO2010043164A1 (en) | 2008-10-13 | 2009-10-10 | Wireless traffic information indicating method and system |
| EP09820240A EP2339562A4 (en) | 2008-10-13 | 2009-10-10 | Wireless traffic information indicating method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102168355A CN101398977B (en) | 2008-10-13 | 2008-10-13 | Electronic wireless traffic information indicating system and device for day and night |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101398977A CN101398977A (en) | 2009-04-01 |
| CN101398977B true CN101398977B (en) | 2011-06-15 |
Family
ID=40517502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102168355A Expired - Fee Related CN101398977B (en) | 2008-10-13 | 2008-10-13 | Electronic wireless traffic information indicating system and device for day and night |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101398977B (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2339562A4 (en) * | 2008-10-13 | 2011-12-14 | Its Hong Kong Ltd | Wireless traffic information indicating method and system |
| CN101894472A (en) * | 2010-07-28 | 2010-11-24 | 浙江中控研究院有限公司 | System and method for acquiring real-time speed information of motor-driven vehicle |
| CN102184645A (en) * | 2011-04-27 | 2011-09-14 | 魏少康 | Automatic guide system for civil complex meteorological vehicle |
| CN102163373A (en) * | 2011-05-05 | 2011-08-24 | 白维 | Infrared road directional traffic communication directing and prompting system |
| DE102012200126A1 (en) | 2012-01-05 | 2013-07-11 | Robert Bosch Gmbh | Driver assistance service |
| CN103236171B (en) * | 2013-04-28 | 2014-05-28 | 李庆忠 | Traffic early-warning method, information transmitter, information receiver and traffic early-warning system |
| CN103996304A (en) * | 2014-04-18 | 2014-08-20 | 武汉理工大学 | City level crossing vehicle signal indication system based on vehicle-road cooperation |
| CN104167101B (en) * | 2014-08-04 | 2017-01-18 | 西安文理学院 | LED optical communication system arranged between traffic light with information issue function and mobile vehicle body |
| CN107784852B (en) * | 2016-08-31 | 2021-03-30 | 奥迪股份公司 | Electronic control device and method for vehicle |
| CN108528330B (en) * | 2018-03-30 | 2022-01-25 | 斑马网络技术有限公司 | Vehicle and information interaction method thereof |
| CN108736983A (en) * | 2018-03-30 | 2018-11-02 | 斑马网络技术有限公司 | Vehicle, ultrasonic system and device and its information interacting method |
| CN108447292A (en) * | 2018-04-10 | 2018-08-24 | 江苏微科云信息技术有限公司 | A kind of wireless intelligent traffic signal guidance system |
| CN109217944B (en) * | 2018-08-10 | 2020-09-01 | 厦门大学 | Sound networking system for vehicle |
| CN109229148A (en) * | 2018-08-29 | 2019-01-18 | 交控科技股份有限公司 | A kind of rail traffic annunciator system, semaphore and train |
| CN109407099A (en) * | 2018-09-04 | 2019-03-01 | 佛山科学技术学院 | A kind of ultrasonic ranging method and its system |
| CN114333293A (en) * | 2021-11-25 | 2022-04-12 | 合众新能源汽车有限公司 | Vehicle overtaking prompting method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025016A1 (en) * | 1979-08-24 | 1981-03-11 | Ascom Autophon Ag | Device in a line-vehicle for wireless transmission of particulars concerving its location |
| CN1312524A (en) * | 2001-02-27 | 2001-09-12 | 刘燕松 | Traffic sign signal emitting and receiving method and device |
| CN1811848A (en) * | 2006-03-01 | 2006-08-02 | 四川交通职业技术学院 | Method and system for vehicle speed limiting and safety space controlling |
| KR20070044613A (en) * | 2005-10-25 | 2007-04-30 | 에스케이 텔레콤주식회사 | System and method for managing condition of road surface using wireless short-distance communication |
| CN101178856A (en) * | 2007-12-05 | 2008-05-14 | 四川西部高新产业开发有限公司 | Motor vehicle ultrasonic wave anti-overtaking-collision method |
-
2008
- 2008-10-13 CN CN2008102168355A patent/CN101398977B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0025016A1 (en) * | 1979-08-24 | 1981-03-11 | Ascom Autophon Ag | Device in a line-vehicle for wireless transmission of particulars concerving its location |
| CN1312524A (en) * | 2001-02-27 | 2001-09-12 | 刘燕松 | Traffic sign signal emitting and receiving method and device |
| KR20070044613A (en) * | 2005-10-25 | 2007-04-30 | 에스케이 텔레콤주식회사 | System and method for managing condition of road surface using wireless short-distance communication |
| CN1811848A (en) * | 2006-03-01 | 2006-08-02 | 四川交通职业技术学院 | Method and system for vehicle speed limiting and safety space controlling |
| CN101178856A (en) * | 2007-12-05 | 2008-05-14 | 四川西部高新产业开发有限公司 | Motor vehicle ultrasonic wave anti-overtaking-collision method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101398977A (en) | 2009-04-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101393686B (en) | All-weather vehicle driving safety indication and control system device | |
| CN101398977B (en) | Electronic wireless traffic information indicating system and device for day and night | |
| US20110196580A1 (en) | Wireless traffic information indicating method and system | |
| CN106128137B (en) | A kind of urban highway traffic crossing car traffic information lamp method for early warning and system based on car networking | |
| CN101398978A (en) | Dynamic distance detection and information transfer method in running vehicle | |
| US6765495B1 (en) | Inter vehicle communication system | |
| CN101299301B (en) | Slow or stopped vehicle ahead advisor with digital map integration | |
| CN104199451A (en) | Unmanned vehicle passing control system for traffic light intersections and operating method thereof | |
| US11288959B2 (en) | Active lane markers having driver assistance feedback | |
| CN101986367A (en) | Wireless early warning method and device of vehicle traffic accidents | |
| CN101398947A (en) | Digital wireless electronic road and parking ground charging system | |
| CN109544991A (en) | A kind of bus or train route collaboration bend vehicle meeting early warning system and control method | |
| CN106080600A (en) | A kind of automobile distant-control system based on V2V and method | |
| CN203102612U (en) | Anti-collision system for ensuring driving safety of automobile | |
| US10896605B2 (en) | Communication system for traffic control equipment | |
| WO2022121323A1 (en) | Laser radar communication method and laser radar communication system | |
| CN101408992A (en) | Digital wireless electronic license plate system | |
| CN101169480A (en) | Radar control method for preventing automobile tail collision | |
| CN104867344A (en) | Road induction system of mist zone | |
| CN108564820B (en) | Early warning system and early warning method for zebra crossing | |
| CN109591826B (en) | Visibility-based obstacle avoidance driving guide system and method | |
| CN106601028B (en) | A kind of vehicle modified line based reminding method and vehicle modified line system for prompting | |
| US20200393843A1 (en) | Vehicle control system and method | |
| US20100219984A1 (en) | Traffic Communication System and Method for Communicating in Traffic | |
| TWM589797U (en) | Expandable type laser interference system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Huang Geng Document name: Notification of Patent Invention Entering into Substantive Examination Stage |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20141013 |
|
| EXPY | Termination of patent right or utility model |