CN202454081U - Device capable of publishing road information and detecting vehicle driving condition and property - Google Patents
Device capable of publishing road information and detecting vehicle driving condition and property Download PDFInfo
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Abstract
The utility model discloses a vehicle detection device used in a crossroad traffic light control system, and especially relates to a device capable of publishing the road information and detecting the vehicle driving condition and property. The detection device is composed of vehicle high frequency signal transmitting receivers arranged on vehicles and road high frequency signal receiving transmitters arranged on crossroads. Electric signals output by the road high frequency signal receiving transmitters are transmitted to a road traffic light controller. The road traffic light controller controls the traffic lights to direct the traffic. The device can form a self-adapting traffic light control system, so a road which has vehicles can be given a green traffic signal, and the buses and the special vehicles have the priority to go first. An anti-traffic jam device of the detection device can effectively prevent the traffic jam at the crossroad. The lighting information of the traffic lights and the road information can be displayed via a traffic light display device in a vehicle, thus facilitating the observation of a driver. A law enforcer can check the vehicle basic information with the help of a handheld vehicle property display.
Description
Technical field
The utility model relates to the vehicle detection apparatus that a kind of intersection traffic light control system uses, and particularly a kind ofly uses sensor detector identification vehicle attribute, distinguishes vehicle heading and differentiate traffic congestion and be installed in the device that is used to issue the road information indicator in the car according to the speed that detects vehicle.
Background technology
Intersection traffic lights adaptive control system with vehicle detection function is as shown in Figure 1, is made up of vehicle detection apparatus, road traffic signal lamp controller 13 and traffic lights 14.Vehicle detection apparatus receives transmitter 12 by vehicle-mounted high-frequency signal transceiver 11 and road high-frequency signal and forms.Vehicle detection apparatus provides classification, the travel direction of travels down vehicle and information such as whether block up to road traffic signal lamp controller 13.After road traffic signal lamp controller 13 was obtained these information, after preset control program was handled, control traffic lights 14 staff vehicles were current.
The adaptive control system of modern intersection traffic lights should have the vehicle detection function, and can detect in the road:
Whether 1 send a car;
2 send a car through the travel direction behind the intersection;
3 send a car is common public vehicles, or the vehicle of priority pass, as: public transit vehicle or (fire engine of executing the task, ambulance or police car etc.) special vehicle;
Whether each exit road of 4 intersections is unimpeded.
Roadway sign lamp controller 13 obtains above information, controls traffic lights with a definite target in view according to actual road conditions, thereby correctly directs traffic.
Present vehicle induction detection method has methods such as ground magnetic coil detection, infrared detection, ultrasound examination, Video Detection and radio frequency detection.
The weak point that the ground magnetic coil detects is that the single detector sensing range is little, and installation needs to excavate road.
The weak point of infrared detection is to detect the travel direction that vehicle needs, and can not detect the classification of vehicle.
The weak point of ultrasound examination is that sensing range is little, can not detect the kind of vehicle.
The weak point of Video Detection is to detect the travel direction that vehicle needs, and equipment cost is high.
The weak point that radio frequency detects is that the radiofrequency signal that each car sends simultaneously can interfere with each other.As following two kinds of Chinese patents adopt dwindle usable range and manually control avoid interfering with each other.
One Chinese patent application numbers 200810243853.2; Publication number CN101436349A; Open May 20 2009 date; The patent of invention title: " control device of public transit vehicle through the crossroad be control method extremely " discloses a kind of based on the control device of radio frequency public transit vehicle through the crossroad.Its weak point is to only limit to bus use; Bus needs the driver to press firing button during to the crossing, with the method for pressing firing button control count-down, avoids interfering with each other with the signal of other bus emissions, and usable range is little and inconvenient.
One Chinese patent application numbers 200810112056.0; Publication number CN101587649A; On open November 25 2009 date, the patent of invention title: " control system of prior-vehicle prior-release at traffic crossing " discloses the preferentially control device through the crossroad of a kind of prior-vehicle.Its weak point is to only limit to preferential car use, and does not have to announce how to prevent that the signal of vehicle between each bar road from interfering with each other.
Other has one Chinese patent application numbers 200820095492.7; Granted publication CN201222303Y; On April 15 2009 Granted publication date, the utility model patent title: " traffic signals display system " discloses a kind of device that obtains traffic signals from traffic lights.Its weak point is to only limit to issuing traffic lamp information, can not issue road information.
In sum, present various detection technique function ratio are more single, can not satisfy the intersection traffic lights fully aspect control, to the composite request of vehicle detection technology.
In addition, one Chinese patent application numbers 94195085.9, grant number CN 1054226C, open July 5 2000 date, the patent of invention title: " siren detector ", and a kind of alarm tone that utilizes alarm to send is disclosed, detect special vehicle (emergency tender) device.Its weak point is that only from alarm song, to separate special sound difficulty higher, makes circuit too complicated.
Summary of the invention
The utility model has overcome shortcoming of the prior art, and a kind of use high frequency radio wave is provided, and detect in the about 100 meters scopes of road: whether 1 send a car; 2 kinds (as: common public vehicles, public transit vehicle, special vehicle etc.) of sending a car; 3 sent a car needs behind the crossing to keep straight on, turn left and still turn right; Vehicle induction pick-up units many functions, easy to use such as whether each exit road of 4 intersections is unimpeded.Use this device can form adaptive traffic signal control system.
Use this device to realize, 1 shows the bright lamp situation of the place ahead traffic lights on the display in car, and the information of road ahead, as: whether road name and number, block up etc.; 2 use vehicle property detector 51 outside car, just can detect the various management information of vehicle, as: attribute, license plate numbers, the situation of validating the car and tax affairs etc. make things convenient for examination of law enforcement.
In order to detect sending a car of road ahead, the present invention realizes through following technical scheme:
A kind of road information and device that detects vehicle travel situations and attribute issued; Comprise wagon detector, traffic congestion detecting device and vehicle property detector, wagon detector is wherein received transmitter 21 and is formed by vehicle-mounted high-frequency signal transceiver 11 and the road high-frequency signal of sending a car.Vehicle-mounted high-frequency signal transceiver 11 and road are sent a car, and high-frequency signal reception transmitter 21 use directional antennas are mutual to be launched or reception high frequency radio wave F.
Cross the front upper place at crossing at every road and locate (usually at existing traffic lights place), a road high-frequency signal is installed is received transmitter 12, like Fig. 9, Figure 10.Road high-frequency signal reception transmitter 12 is sent a car by road, and high-frequency signal receives transmitter 21, road traffic congestion high-frequency signal receives transmitter 41 and forms.Road send a car high-frequency signal receive transmitter 21 directional antenna 70 the beam center axis forwards on the lower side, aim at the send a car farthest road mid point 90 of search coverage of corresponding intersection.Vehicle-mounted high-frequency signal transceiver 11 is contained in the front windshield place of each car.The beam axis of the directional antenna 64 of vehicle-mounted high-frequency signal transceiver 11 when the farthest of vehicle at detecting area, is aimed at the road high-frequency signal of sending a car and is received the directional antenna 70 of transmitter 21 forwards on the upper side, sees Figure 11, Figure 12.
With typical four cross road mouths is example, establishes: the west eastwards for a to; North orientation south be b to; The east orientation west be c to; South orientation north be d to.
A is to the not mistake crossing of travels down vehicle; Use the directional antenna 64 of vehicle-mounted high-frequency signal transceiver 11a forwards to launch or receive high frequency radio wave; Send a car directional antenna 70 surface of emissions that high-frequency signal receives transmitter 21a to the surface of emission with the road that is installed in this place ahead, track, and the two can establish a communications link; Laterally vehicle-mounted high-frequency signal transceiver 11b, the 11d in track receive the directional antenna 70 of transmitter 21a because its directional antenna 64 is sides towards the road high-frequency signal of sending a car, and the two can not establish a communications link; Same road crossed the directional antenna 64 and same the equidirectional directional antenna 64 of crossing the vehicle-mounted high-frequency signal transmitter 11a at crossing of road of the vehicle-mounted high-frequency signal transmitter 11c at crossing in the other direction; All being the back side receives the directional antenna 70 of transmitter 21a towards the road high-frequency signal of sending a car, and the directional antenna 64 of the two all can not establish a communications link with the road directional antenna 70 that high-frequency signal receives transmitter 21a of sending a car; Same road crossed the directional antenna 64 of the vehicle-mounted high-frequency signal transmitter 11c at crossing in the other direction, and the surface of emission receives directional antenna 70 back sides of transmitter 21a to the road high-frequency signal of sending a car, and the two can not establish a communications link.The road sensing range that high-frequency signal receives transmitter 21 of sending a car just is limited in the scope in zone 91 like this.
In sum, the road high-frequency signal of sending a car receives transmitter 21a, and the vehicle-mounted high-frequency signal transceiver 11a that only on the track, crosses the crossing vehicle with a launches each other or receives high frequency radio wave;
By that analogy: the road high-frequency signal of sending a car receives transmitter 21b, and the vehicle-mounted high-frequency signal transceiver 11b that only on the track, crosses the crossing vehicle with b launches each other or receives high frequency radio wave;
The road high-frequency signal of sending a car receives transmitter 21c, and the vehicle-mounted high-frequency signal transceiver 11c that only on the track, crosses the crossing vehicle with c launches each other or receives high frequency radio wave;
The road high-frequency signal of sending a car receives transmitter 21d, and the vehicle-mounted high-frequency signal transceiver 11d that only on the track, crosses the crossing vehicle with d launches each other or receives high frequency radio wave.
The utility model uses said method to overcome the phase mutual interference of high-frequency signal between different directions, the different track.
The utility model can also be realized through following technical scheme:
A kind of wagon detector of issuing road information and the device that detects vehicle travel situations and attribute; The directional antenna 64 that vehicle-mounted high-frequency signal transceiver 11 uses is installed in the front portion of vehicle, and the vertical beam width of directional antenna 64 is forwards horizontal line and above 0 to 135 degree scope; The road high-frequency signal of sending a car receives the directional antenna 70 that transmitter 21 uses and is installed in the front upper place that needs to survey road, and the vertical beam width of directional antenna 70 is towards detecting area, horizontal line and following 0 to 60 degree scope; Directional antenna 64 is spent less than 180 with the horizontal beam width sum of directional antenna 70.Perhaps the vertical beam width of directional antenna 64 is forwards horizontal line and above 0 to 90 degree scope.Zone 111 is the wave beam zone of directional antenna 64..
Vehicle-mounted high-frequency signal transceiver 11 is installed in the front portion of vehicle; The vertical beam width of employed directional antenna 64 is forwards horizontal line and above 0 to 90 degree or forwards horizontal line and above 0 to 135 degree, can take into account with the road high-frequency signal of sending a car to receive transmitter 21 and road traffic congestion high-frequency signal and receive the two communicating requirement of transmitter 41; The road high-frequency signal of sending a car receives transmitter 21 and is installed in road the place ahead; Usually be installed in the traffic lights place; The vertical beam width of employed directional antenna 70 is the place ahead horizontal line and following 0 to 60 degree, can improve the interference free performance of detecting area high-frequency signal strength and system; Directional antenna 64 is spent less than 180 with the horizontal beam width sum of directional antenna 70; Can guarantee reliably on the square crossing road; Vehicle-mounted high-frequency signal transceiver 11 only receives transmitter 21 and communicates with the road in this road the place ahead high-frequency signal of sending a car, and does not receive transmitter 21 and communicates with the road of the belt road high-frequency signal of sending a car.If the intersecting roads out of plumb, the horizontal beam width sum of directional antenna 64 and directional antenna 70 should be less than two times of the less one jiao angle value of angle in the intersecting roads.
The wagon detector of the device of a kind of comprehensive detection road and vehicle ' situation, vehicle-mounted high-frequency signal transceiver 11 and road send a car high-frequency signal receive transmitter 21 mutually the frequency of the high frequency radio waves of emission for having rectilinear propagation characteristic ultrahigh frequency radiowave.Adopt the high frequency radio wave of rectilinear propagation, the scattering property of radiowave is less, can cooperate directional antenna wave beam to be controlled in the scope of requirement effectively, can overcome the phase mutual interference of high-frequency signal between different directions, the different track so better.
The wagon detector of the device of a kind of comprehensive detection road and vehicle ' situation, vehicle-mounted high-frequency signal transceiver 11 are sent a car and are just got into the duty of launching high frequency radio signal after high-frequency signal receives the high frequency radio signal that transmitter 21 sends receiving road.Vehicle-mounted high-frequency signal receives transmitter 11 and is in the holding state that receives high-frequency signal when flat.When getting into road, vehicle sends a car high-frequency signal when receiving the surveyed area 91 of transmitter 21; Vehicle-mounted high-frequency signal transceiver 11 receives road and sends a car after high-frequency signal receives the vehicle detection high-frequency signal that transmitter 21 sends; Just get into to send vehicle class and travel direction high-frequency signal and the duty that receives high-frequency signal, can make vehicle-mounted high-frequency signal transceiver 11 be reduced to littler the influence that the interference of other electrical equipment reaches human body.
The wagon detector of the device of a kind of comprehensive detection road and vehicle ' situation, vehicle-mounted high-frequency signal transceiver 11 and the road high-frequency signal of sending a car receives transmitter 21 and uses ZigBee or wireless LAN communication agreement mutual communication.The high frequency radio wave internal modulation of vehicle-mounted high-frequency signal transceiver 11 emissions has the kind and the travel direction of vehicle, or the information electric signal such as attribute of vehicle.The road high frequency radio wave F internal modulation that high-frequency signal receives transmitter 21 emissions of sending a car has the attribute of road ahead and the electric signal of the bright lamp information of traffic lights.
Adopt ZigBee or wireless local area network technology; Each direction is sent a car with road, and to receive transmitter 21 be center machine to high-frequency signal; The vehicle-mounted high-frequency signal transceiver 11 of each vehicle is a terminating machine; Form an independently communication network, the vehicle-mounted high-frequency signal transceiver 11 that makes each vehicle in the same direction all receives transmitter 21 and sets up two-way communication and get in touch with the road high-frequency signal of sending a car independently.The high frequency radio IO transport module 62 of vehicle-mounted high-frequency signal transceiver 11; Obtain the vehicle heading signal from turn inside diameter indicator signal 60; Obtain the vehicle class signal from vehicle attribute storage module 63; Through directional antenna 64, receive transmitter 21 and send one group of coding that contains vehicle class and travel direction to the road high-frequency signal of sending a car, road is sent a car, and to receive that transmitter 21 obtains to send a car be common public vehicles, public transit vehicle or police car to high-frequency signal; And information such as the direction that need go behind the crossing of sending a car and all kinds of quantity of sending a car, and these information are passed to road traffic signal lamp controller 13.Behind the information of vehicles by road traffic signal lamp controller 13 comprehensive each bar road, the work of control traffic lights.
Traffic information display device receives transmitter 11 and display module 61 and the road high-frequency signal of sending a car by vehicle-mounted high-frequency signal and receives transmitter 21 and form in the car of the utility model; The road high-frequency signal of sending a car receives lamp bright signal and the road information that transmitter 21 is gathered traffic lights, sends to vehicle-mounted high-frequency signal and receives transmitter 11; Vehicle-mounted high-frequency signal receives transmitter 11 and receives signal; Handle through high frequency radio IO transport module 62 and display module 61 interlock circuits; By the information of three direction roads of bright lamp information and front, the left and right sides of display screen demonstration the place ahead traffic lights in the car, as: information such as road name, number and road conditions.
Have or not special purpose vehicle in order to detect road ahead, the utility model can also be realized through following technical scheme:
A kind of road information and device that detects vehicle travel situations and attribute issued; The special purpose vehicle pick-up unit that its vehicle class detects; By the siren 30 of vehicle-mounted high-frequency signal transceiver 11 and special purpose vehicle, road is sent a car, and high-frequency signal receives transmitter 21 and road special purpose vehicle alarm song receiver 32 is formed; And receive transmitter 21 and road special purpose vehicle alarm song receiver 32 and receive the vehicle-mounted high-frequency signal transceiver 11 of special purpose vehicle simultaneously and send the audio frequency that is different from other horn for vehicle sound among special purpose vehicle high-frequency signal F and special purpose vehicle alarm song or the tucket S and discern existing of special purpose vehicle with the road high-frequency signal of sending a car.
This pick-up unit is different from the sound signal of common car tucket audio frequency and the special purpose vehicle coded high-frequency signals F of setting, these two kinds of input special purpose vehicle through detecting among the special purpose vehicle alarm song S.One of special purpose vehicle craspedodrome and left and right turning receiver 80,81,82; After having received special purpose vehicle (containing travel direction) high-frequency signal F at the same time and special purpose vehicle siren tone signal S being arranged; The electric signal of exporting the special purpose vehicle craspedodrome or turning left or turn right, and keep this signal of special purpose vehicle to arrive till the special purpose vehicle high-frequency signal F disappearance.
Whether block up in order to detect exit road, the utility model is realized through following technical scheme:
A kind of road information and device that detects vehicle travel situations and attribute issued; Comprise wagon detector, traffic congestion detecting device and vehicle property detector, traffic congestion detecting device wherein receives transmitter 41 by vehicle-mounted high-frequency signal transceiver 11 with road traffic congestion high-frequency signal and forms.Road traffic congestion high-frequency signal receives transmitter 41 and uses directional antenna 83 to receive the high frequency radio wave F of the vehicle-mounted high-frequency signal transceiver 11 in below; According to a vehicle-mounted high-frequency signal transceiver 11, receive time of directional antenna 83 beam angles of transmitter 41 through road traffic congestion high-frequency signal, detect and whether block up.
Road traffic congestion high-frequency signal receives transmitter 41, is linked in sequence and is formed by directional antenna 83, traffic congestion high frequency radio IO transport module 84 and the traffic congestion discrimination module 85 that clocks.
When vehicle sails the outlet of road into; Vehicle-mounted high-frequency signal receives transmitter 11 and gets into detection zones 92 and receive after road traffic congestion high-frequency signal receives the high-frequency signal that transmitter 41 sends; The high-frequency signal of upwards launching; After directional antenna 83 receives this signal, send this signal to traffic congestion high frequency radio IO transport module 84 again.Traffic congestion high frequency radio IO transport module 84, choose first vehicle-mounted high-frequency signal transceiver 11 that connects with it after, no longer connect, and keep this connection with other vehicle-mounted high-frequency signal transceivers 11 that get into detection zones 92.Leave detection zone 92 when this vehicle-mounted high-frequency signal receives transmitter 11, the vehicle-mounted high-frequency signal reception transmitter 11 with other cars connects again.Traffic congestion is clocked discrimination module 85 to each connection timing respectively.Because of the length of detection zone 92 is confirmed, thus this time reflected the travel speed of vehicle.Time is big more, and the travel speed of vehicle is slow more.Can set a time as boundary, confirm as the road traffic congestion greater than this boundary; Confirm as The coast is clear less than this boundary.
All output signals of vehicle ' situation device in this radiowave comprehensive detection road, after 87 conversions of IO bus line 86 and signal input output interface circuit to walk abreast or the serial output form is connected with roadway sign lamp controller 13.
In order to detect the attribute of vehicle, the utility model is realized through following technical scheme:
A kind of road information and device that detects vehicle travel situations and attribute issued; Comprise wagon detector, traffic congestion detecting device and vehicle property detector, vehicle property detector wherein is made up of with vehicle attribute display device 51 vehicle-mounted high-frequency signal transceiver 11.Vehicle-mounted high-frequency signal transceiver 11 uses directional antenna to transmit and receive high frequency radio wave F with vehicle attribute display device 51; Use ZigBee communication protocol or wireless LAN communication agreement mutual communication.Use directional antenna and ZigBee communication protocol or wireless LAN communication agreement, the law enfrocement official uses vehicle attribute display device 51 outside car, with vehicle-mounted high-frequency signal transceiver 11 wireless connections.Vehicle-mounted high-frequency signal transceiver 11; After receiving the attribute detection high-frequency signal of vehicle attribute display device 51 emissions; Vehicle attribute storage module 63 is given high frequency radio IO transport module 62 with the vehicle attribute information that stores; High frequency radio IO transport module 62 passes through directional antenna 64 with ZigBee communication protocol or wireless LAN communication agreement; The high-frequency signal of emission vehicle attribute, make vehicle attribute display device 51 obtain vehicles vehicle attributes such as electronic license plate number, tax affairs information and on display screen, show, make things convenient for the law enfrocement official to check.
Compared with prior art, the beneficial effect of the utility model is:
The scope of 1 pick-up unit detection is about 100 meters an of longitudinal separation; About distance equal the zone of width of roadway; (detecting relatively with the ground magnetic coil) single detector sensing range is big; Reduced the quantity of Road Detection device, be convenient to controller, shortened the time of vehicle through the crossing according to the correct in advance traffic lights of selecting of the actual conditions of sailing the detection zone vehicle on the road into;
2 work as the crossing vehicle more after a little while, can realize bus or train route mouth green light, reduce down time, improve road utilization rate;
3 work as the crossing vehicle more for a long time, can realize that the intersection bus preferentially passes through;
4 work as the crossing vehicle more for a long time, prolong the lighting time of green light, improve the speed of vehicle through the crossing
5 work as the crossing vehicle more for a long time, can prevent the intersection traffic congestion;
6 can guarantee that (fire engine, ambulance etc.) special vehicle first priority is current;
7 need not excavate road, install more convenient.
8 (comparing with Video Detection) did not receive weather effect to vehicle detection;
9 special purpose vehicle detecting devices are only got a bit of alarm tone or are not had alarm tone, can reduce city noise.And mainly detect the special purpose vehicle coded high-frequency signals, improved the correctness that detects;
The driver of 10 vehicles sees information such as whether unobstructed the situation, road surface in road name, number, the garage parking of the place ahead, the left side and the right road on can the display screen in car.The bright lamp information that also can show traffic lights, reducing oversize vehicle and weather influences driver's observation;
11 law enfrocement officials use vehicle attribute display device 51 outside car, just can obtain the attribute of the vehicle such as license plate numbers, tax affairs of vehicle, make things convenient for examination of law enforcement.
Description of drawings
A kind of road information and traffic light control system figure that detects vehicle travel situations and attribute device of issuing of Fig. 1;
A kind of road information and wagon detector system diagram that detects vehicle travel situations and attribute device issued of Fig. 2;
A kind of road information and special purpose vehicle detection system figure that detects vehicle travel situations and attribute device of issuing of Fig. 3;
A kind of road information and traffic congestion detection system figure that detects vehicle travel situations and attribute device of issuing of Fig. 4;
A kind of road information and vehicle attribute detection system figure that detects vehicle travel situations and attribute device of issuing of Fig. 5;
Vehicle-mounted high-frequency signal transceiver 11 structural drawing of Fig. 6;
Fig. 7 road high-frequency signal receives transmitter 12 structural drawing;
Fig. 8 vehicle property detector 51 structural drawing;
Fig. 9 intersection road high-frequency signal surveyed area planimetric map;
Figure 10 intersection a is to the road high-frequency signal surveyed area outboard profile of road;
Figure 11 intersection vehicle-mounted high-frequency signal emitting area planimetric map;
Figure 12 intersection a is to the vehicle-mounted high-frequency signal emitting area outboard profile of road;
Figure 13 fork in the road road is sent a car, and high-frequency signal receives transmitter 21 and road traffic congestion high-frequency signal receives transmitter 41 embodiment floor plans;
A kind of road information and embodiment system block diagram that detects vehicle travel situations and attribute device issued of Figure 14;
The vehicle-mounted high-frequency signal transceiver of Figure 15 embodiment block scheme;
Figure 16 vehicle property detector embodiment block scheme;
Figure 17 road high-frequency signal receives transmitter embodiment block scheme.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.
A kind of wagon detector embodiment that issues the device of road information and detection vehicle travel situations and attribute forms with road high-frequency signal reception transmitter 141 by not crossing the vehicle-mounted high-frequency signal reception in crossing transmitter 140.
Vehicle-mounted high-frequency signal receives transmitter 140, is made up of the turn inside diameter indicator signal 151, display module 152, vehicle attribute storage module 154 and the directional antenna 155 that are connected with the wireless IO transport module 153 of vehicle ZigBee respectively.Directional antenna 155 is contained in centre or right side (area that vehicle leans on the road right side to go) at the front windshield place of each car; Launch the high-frequency signal that vehicle-mounted high-frequency signal receives transmitter 140; Receive the road high-frequency signal of sending a car when perhaps crossing the crossing and receive the high-frequency signal of transmitter 142, cross to receive behind the crossing and connect the high-frequency signal that road traffic congestion high-frequency signal receives transmitter 144.
The road high-frequency signal receives transmitter 141, is received transmitter 142, road special purpose vehicle alarm song receiver 143 and road traffic congestion high-frequency signal and is received transmitter 144 and form by the road high-frequency signal of sending a car.
The road high-frequency signal of sending a car receives transmitter 142; The wireless IO transport module 161 of ZigBee by directional antenna 160 and connection; And input end and connect the back be connected with wireless IO transport module 161 output terminals of ZigBee; The bicycle craspedodrome receiver 164 that output terminal is connected with an input end of RS485 input/output interface circuit 176 respectively through bus 177, bicycle left-hand rotation receiver 165, ordinary motor vehicle craspedodrome receiver 166, ordinary motor vehicle left-hand rotation receiver 167, bus craspedodrome receiver 168, bus left-hand rotation receiver 169, special purpose vehicle craspedodrome identification receiver 170, special purpose vehicle left-hand rotation identification receiver 171 and special purpose vehicle are turned right and are discerned receiver 172, and RS485 input/output interface circuit 176 is formed.General vehicle is not established the identification receiver of turning right, and the right-hand rotation traffic lights are mainly changed over to the traffic congestion situation control at crossing by vehicle.
Vehicle-mounted high-frequency signal transceiver 140 and the road high-frequency signal of sending a car receives transmitter 142, uses the emission or receive high frequency radio wave mutually of directional antenna 155 and directional antenna 160 separately.
Road special purpose vehicle alarm song receiver 143 amplifies decoder module 163 by directional microphone 162 and special purpose vehicle alarm song audio frequency; Special purpose vehicle is kept straight on and is discerned receiver 170, special purpose vehicle turns left to discern receiver 171 and special purpose vehicle right-hand rotation identification receiver 172, and RS485 input/output interface circuit 176 compositions.Directional microphone 162 is connected with the input end that special purpose vehicle alarm song audio frequency amplifies decoder module 163, and the audio input end that receiver 172 is discerned in the output terminal of special purpose vehicle alarm song audio frequency amplification decoder module 163 and special purpose vehicle craspedodrome identification receiver 170, special purpose vehicle left-hand rotation identification receiver 171 and special purpose vehicle right-hand rotation is connected in parallel.
Road traffic congestion high-frequency signal receives transmitter 144, is linked in sequence and is formed by clock discrimination module 175 and RS485 input/output interface circuit 176 of directional antenna 173, traffic congestion ZigBee is wireless IO transport module 174, traffic congestion.
Fork in the road with Figure 13 is an example, and the place, front upper place (usually at existing traffic lights place) of intersection is passed by in every road, and a road send a car high-frequency signal reception transmitter 142 and road special purpose vehicle alarm song receiver 143 are installed.The road high-frequency signal of sending a car receives the central axis of the directional antenna 160 of transmitter 142, aims at the send a car mid point of search coverage farthest of corresponding intersection, receives the high-frequency signal that vehicle-mounted high-frequency signal in the detecting area road of sending a car receives transmitter 140.When the farthest of vehicle at detecting area, the beam axis of the directional antenna 155 of vehicle-mounted high-frequency signal transceiver 140 is aimed at the road high-frequency signal of sending a car and is received the directional antenna 160 of transmitter 142.Leaving above every road inflow point of intersection, road traffic congestion high-frequency signal be installed received transmitter 144, its directional antenna 173 receiving planes down, the vehicle-mounted high-frequency signal that receives the below road receives the high-frequency signal of transmitter 140.
If; The west be eastwards a to; North orientation south be b to; The east orientation west be c to; South orientation north be d to.
Cross the front upper place place (existing traffic lights place) at crossing at a to the track, the road high-frequency signal of sending a car is installed is received transmitter 142 and a road special purpose vehicle alarm song receiver 143, the type and the travel direction of detection a vehicle on the track.A does not have the road that leaves the intersection to bus or train route, need not to install road traffic congestion high-frequency signal and receives transmitter 144.
C does not have the intersection of entering road to the track; Need not to install the road high-frequency signal of sending a car and receive transmitter 142 and road special purpose vehicle alarm song receiver 143; Only need above the road inflow point of leaving the intersection, to install road traffic congestion high-frequency signal and receive transmitter 144, survey c and whether block up to the track.
B on the track with d to the track; Because getting into the road of intersection has with the road that leaves the intersection; Receive transmitter 141 so a road high-frequency signal is installed at existing traffic lights place separately, survey respectively b on the track with d sending a car and the traffic congestion situation to the track.
The vertical beam width of the directional antenna 155 that vehicle-mounted high-frequency signal transceiver 140 uses is for spending to 90; The road high-frequency signal receives transmitter 141 and is installed in road the place ahead, is installed in the traffic lights place usually, and the vertical beam width of employed directional antenna 160 is the place ahead horizontal line and following 55 degree; Directional antenna 144 all is 55 degree with the horizontal beam width of directional antenna 160; Can guarantee reliably on the square crossing road; Vehicle-mounted high-frequency signal transceiver 11 only receives transmitter 141 with the road high-frequency signal in this road the place ahead and communicates, and does not receive transmitter 141 mistakes with the road high-frequency signal of belt road and does not communicate by letter.If intersecting roads out of plumb, the intersecting roads angle value that present embodiment allows are that 55 degree are to 90 degree.
The vehicle-mounted high-frequency signal transceiver 140 of embodiment receives transmitter 141 with the road high-frequency signal and uses ZigBee communication protocol mutual communication.
ZigBee be a kind of closely, low complex degree, low-power consumption, low data rate, radio network technique cheaply, maximum host nodes can be managed 254 node, can satisfy the request for utilization of system fully.
The carrier frequency of ZigBee communication protocol is the 2.4GHz ultrahigh frequency radiowave with rectilinear propagation characteristic; The scattering property of electric wave is less; Can cooperate directional antenna wave beam to be controlled in the scope of requirement effectively, can overcome the phase mutual interference of high-frequency signal between different directions, the different track effectively.The channel of ZigBee communication protocol has 16, and when the ZigBee network receives external interference, in the time of can't operate as normal, whole network can switch to work stable on another working channel dynamically, increases the anti-interference of system.
Adopt ZigBee communication protocol; Each direction is sent a car with road, and to receive transmitter 142 be center machine to high-frequency signal; The vehicle-mounted high-frequency signal transceiver 140 of each vehicle is a terminating machine; Adopt wireless local area network technology to form an independently communication network, make the vehicle-mounted high-frequency signal transceiver 140 of each vehicle in the same direction all independent with stably receive transmitter 142 and set up two-way communication and get in touch with the road high-frequency signal of sending a car.
The high frequency radio wave F internal modulation that high-frequency signal receives transmitter 142 emissions of sending a car of the wagon detector of the device of a kind of comprehensive detection road and vehicle ' situation, road has road information, like the road name of road ahead and number etc.Road information is stored in the road traffic signal lamp controller; Give the RS485 input/output interface circuit 176 that the road high-frequency signal receives transmitter 141 through connecting line; Send the wireless IO transport module 161 of ZigBee to by IO bus line 177 again; Send to vehicle-mounted high-frequency signal transceiver 140 through directional antenna 160, offer traffic information display device demonstration in the car.
Vehicle-mounted high-frequency signal receives transmitter 140 and is in the holding state that receives high frequency radio signal when flat.When receiving road, vehicle-mounted high-frequency signal transceiver 140 sends a car after high-frequency signal receives the high frequency radio signal that transmitter 142 sends; Just get into the duty that receives and send high frequency radio signal; Can make vehicle-mounted high-frequency signal transceiver 140, be reduced to littler scope to the interference of other electrical equipment with to the human influence.
Vehicle-mounted high-frequency signal transceiver 140 receives road and sends a car after high-frequency signal receives the high frequency radio signal that transmitter 142 sends, and the high frequency radio wave internal modulation of emission has two group codings.One group is system password, and another group contains 82 binary information codings of vehicle class and travel direction.
82 scale codings of vehicle class and travel direction are divided into: the first two position imports sign indicating number, and middle three is vehicle class, and back three is the directional information of vehicle '.
The road high-frequency signal of sending a car receives transmitter 142, uses directional antenna 160 to receive high-frequency signals; High-frequency signal is handled through the wireless IO transport module 161 of ZigBee; Solve 82 scale codings of vehicle class and travel direction; This of coding triggering is connected with the wireless IO transport module 161 of ZigBee; Bicycle craspedodrome receiver 164 that address code is corresponding with coding or bicycle left-hand rotation receiver 165 or ordinary motor vehicle craspedodrome receiver 166 or ordinary motor vehicle left-hand rotation receiver 167 or bus craspedodrome receiver 168 or bus left-hand rotation receiver 169 or special purpose vehicle craspedodrome identification receiver 170 or special purpose vehicle left-hand rotation identification receiver 171 or special purpose vehicle are turned right and are discerned in the receiver 172, and store one-period.As: IO transport module 161 outputs 00010001 that ZigBee is wireless, bus craspedodrome receiver 168 is just exported the signal that the craspedodrome bus is arranged.Decomposite the information such as direction that to go behind the kind of vehicle and the crossing of sending a car, convert serial signal to by RS485 input/output interface circuit 176 again, pass to the roadway sign lamp controller.Behind the information of vehicles by each bar road of signal light path controller synthesis intersection, the work of control traffic lights.
The traffic information display device receives transmitter 140 and display module 152 and the road high-frequency signal of sending a car by vehicle-mounted high-frequency signal and receives transmitter 141 and form in the car of the device of a kind of comprehensive detection road and vehicle ' situation; The road high-frequency signal of sending a car receives transmitter 141 and gathers the lamp bright signal of traffic lights and add road information, sends to vehicle-mounted high-frequency signal and receives transmitter 140; Vehicle-mounted high-frequency signal receives transmitter 140 and receives signals, handles through display module 152 interlock circuits, shows the bright lamp information of the place ahead traffic lights and the information of first three direction road of the left and right sides by the display screen of display module in the car.
Have or not special purpose vehicle in order to detect road ahead, present embodiment can also be realized through following technical scheme:
The special purpose vehicle pick-up unit has the vehicle-mounted high-frequency signal of special purpose vehicle electric signal to receive the alarm song generator 146 of transmitter 140 and special purpose vehicle by modulation; Road is sent a car, and high-frequency signal receives transmitter 142 and road special purpose vehicle alarm song receiver 143 is formed.There is the road high-frequency signal of special purpose vehicle measuring ability to receive transmitter 141, sends the existence that the sound signal (as: 7500Hz audio frequency) that is different from other horns for vehicle in special purpose vehicle high-frequency signal and the special purpose vehicle alarm song is differentiated special purpose vehicle according to receiving the vehicle-mounted high-frequency signal reception of special purpose vehicle transmitter 140 simultaneously.
This pick-up unit; Receive the alarm song of special purpose vehicle by directional microphone 162; Amplify decoder module 163 through special purpose vehicle alarm song audio frequency and differentiate that the alarm song that is not different from common car tucket audio frequency (as: 7500Hz audio frequency) is arranged, special purpose vehicle alarm song audio frequency amplifies decoder module 163 when defining alarm song; Discern the audio input end that receiver 172 is discerned in receiver 170, special purpose vehicle left-hand rotation identification receiver 171 and special purpose vehicle right-hand rotation to the special purpose vehicle craspedodrome, export the electric signal that alarm song is arranged.Special purpose vehicle turn left identification receiver 171 and the special purpose vehicle of identification receiver 170, special purpose vehicle of keeping straight on turned right identification receiver 172 according to the electric signal of the alarm song that special purpose vehicle is arranged with the special purpose vehicle high frequency radio coded signal that comprises travel direction is arranged; The existence of these two kinds of input special purpose vehicle and travel direction thereof make the detection of special purpose vehicle more reliable and open.
After the special purpose vehicle recognizer has received the special purpose vehicle high-frequency signal at the same time and special purpose vehicle siren tone signal has been arranged; Output has the electric signal of special purpose vehicle and special purpose vehicle travel direction, and maintains this signal (no matter have not special purpose vehicle siren tone signal) till the disappearance of special purpose vehicle high-frequency signal.
Also can only discern special purpose vehicle with the high frequency radio signal of special purpose vehicle coding.When adopting this scheme, cancel road special purpose vehicle alarm song receiver 143, and the audio input end of receiver 172 is discerned in special purpose vehicle craspedodrome identification receiver 170, special purpose vehicle left-hand rotation identification receiver 171 and special purpose vehicle right-hand rotation.
Whether prevent traffic congestion in order to detect exit road, present embodiment is realized through following technical scheme:
A kind of traffic congestion detecting device of issuing the device of road information and detection vehicle travel situations and attribute is formed with road traffic congestion high-frequency signal reception transmitter 144 by crossing the vehicle-mounted high-frequency signal transceiver 140 in crossing.Road traffic congestion high-frequency signal receives transmitter 144, is made up of directional antenna 173, traffic congestion high frequency radio IO transport module 174 and the traffic congestion discrimination module 175 that clocks.
Traffic congestion road high-frequency signal receives transmitter 144 and uses directional antenna 173 to receive the high frequency radio signal F of the vehicle-mounted high-frequency signal transceiver 140 in below; According to a vehicle-mounted high-frequency signal transceiver 140, whether the time of the beam angle through directional antenna 173 is detected and blocks up.
When vehicle sails the outlet of road into; Vehicle-mounted high-frequency signal receives transmitter 140 and gets into detection zone; Receive after road traffic congestion high-frequency signal receives the high-frequency signal that transmitter 144 sends; Upwards launch high-frequency signal, after directional antenna 173 receives this signal, send this signal to traffic congestion high frequency radio IO transport module 174 again.Traffic congestion high frequency radio IO transport module 174, choose first vehicle-mounted high-frequency signal transceiver 140 that connects with it after, no longer be connected with other vehicle-mounted high-frequency signal transceivers 140 that get into detection zones; And keep the connection of first foundation, and receive transmitter 140 to this vehicle-mounted high-frequency signal and leave detection zone, receive transmitter 140 with the vehicle-mounted high-frequency signal of other cars again and connect.Traffic congestion is clocked discrimination module 175 to each connection timing respectively.Because of the length of detection zone is confirmed, thus this time reflected the travel speed of vehicle.Time is big more, and the travel speed of vehicle is slow more.Can set a time as boundary, confirm as the road traffic congestion greater than this boundary; Confirm as The coast is clear less than this boundary.
The output signal of all modules of vehicle ' situation device is sent to RS485 input/output interface circuit 176 through IO bus line 177 in this radiowave comprehensive detection road; Signal sends the roadway sign lamp controller to the RS485 interface shape after being changed by RS485 input/output interface circuit 176.
In order to detect the attribute of vehicle, present embodiment is realized through following technical scheme:
A kind of vehicle property detector of issuing road information and the device that detects vehicle travel situations and attribute is made up of with vehicle attribute display device 147 vehicle-mounted high-frequency signal transceiver 140.
Vehicle-mounted high-frequency signal transceiver 140 receives that vehicle attribute display device 147 sends, meet the demonstration vehicle attribute high-frequency signal of ZigBee communication protocol after, reply the high-frequency wireless signals that modulation has information such as vehicle attribute.Thereby make vehicle attribute display device 147 obtain the attribute information of the vehicles such as electronic license plate number, tax affairs of vehicles.Vehicle attribute high-frequency signal is directed antenna 156 and receives, and through ZigBee, is shown by display module 158 after 157 demodulation of radio IO transport module.
The wireless wave frequency of the high frequency that uses in the present embodiment is the 2.4GHz frequency range with rectilinear propagation characteristic, also can adopt the 5GHz frequency range to substitute.Device technology with frequency 2.4GHz work is the most ripe at present, and cost performance is the highest.
Through the introduction of present embodiment, can produce a complete function, can issue road information; Can detect road send a car and send a car kind, travel direction; Whether can detect road blocks up; Can detect the comprehensive detection device of vehicle attribute.
Claims (11)
1. issue road information and the device that detects vehicle travel situations and attribute for one kind; Comprise wagon detector, traffic congestion detecting device and vehicle property detector; Wagon detector is wherein received transmitter (21) and is formed by vehicle-mounted high-frequency signal transceiver (11) and the road high-frequency signal of sending a car, and it is characterized in that vehicle-mounted high-frequency signal transceiver (11) and the road high-frequency signal of sending a car receives transmitter (21) and uses directional antenna to launch mutually or reception high frequency radio wave F.
2. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1; It is characterized in that directional antenna (64) that vehicle-mounted high-frequency signal transceiver (11) uses is installed in the front portion of vehicle, the vertical beam width of directional antenna (64) is forwards horizontal line and above 0 to 135 degree scope; The directional antenna (70) that the road high-frequency signal receives transmitter (12) use is installed in the front upper place that needs to survey road, and the vertical beam width of directional antenna (70) is towards detecting area, horizontal line and following 0 to 60 degree scope; Directional antenna (64) is spent less than 180 with the horizontal beam width sum of directional antenna (70).
3. according to described a kind of road information and the device that detects vehicle travel situations and attribute issued of claim 1 or claim 2, the vertical beam width that it is characterized in that directional antenna (64) is forwards horizontal line and above 0 to 90 degree scope.
4. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1, the frequency that it is characterized in that sending a car vehicle-mounted high-frequency signal transceiver (11) and road high-frequency signal receives transmitter (21) use high frequency radio wave F is for having rectilinear propagation characteristic ultrahigh frequency radiowave.
5. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1 is characterized in that vehicle-mounted high-frequency signal transceiver (11) only sends a car and just get into the duty of launching high frequency radio signal after high-frequency signal receives the high frequency radio signal that transmitter (21) sends receiving road.
6. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1 is characterized in that vehicle-mounted high-frequency signal transceiver (11) and the road high-frequency signal of sending a car receives transmitter (21) use ZigBee communication protocol or wireless LAN communication agreement mutual communication.
7. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1, the high frequency radio wave F internal modulation that it is characterized in that sending a car road high-frequency signal receives transmitter (21) emission has the attribute of road ahead and the electric signal of the bright lamp information of traffic lights.
8. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 1; The high frequency radio wave F internal modulation that it is characterized in that vehicle-mounted high-frequency signal transceiver (11) emission has the kind and the travel direction of vehicle, or the electric signal of the information such as attribute of vehicle.
9. a kind of road information and device that detects vehicle travel situations and attribute issued according to claim 8; It is characterized in that the special purpose vehicle pick-up unit that vehicle class detects; By the siren (30) of vehicle-mounted high-frequency signal transceiver (11) and special purpose vehicle, road is sent a car, and high-frequency signal receives transmitter (21) and road special purpose vehicle alarm song receiver (32) is formed; And receive transmitter (21) and road special purpose vehicle alarm song receiver (32) and receive the vehicle-mounted high-frequency signal transceiver of special purpose vehicle (11) simultaneously and send the existence that the audio frequency that is different from other horn for vehicle sound among special purpose vehicle high-frequency signal F and special purpose vehicle alarm song or the tucket S is discerned special purpose vehicle with the road high-frequency signal of sending a car.
10. issue road information and the device that detects vehicle travel situations and attribute for one kind; Comprise wagon detector, traffic congestion detecting device and vehicle property detector; Traffic congestion detecting device wherein receives transmitter (41) by vehicle-mounted high-frequency signal transceiver (11) and road traffic congestion high-frequency signal to be formed, and it is characterized in that road traffic congestion high-frequency signal receives transmitter (41) and uses directional antenna (83) to receive the high frequency radio wave F of the vehicle-mounted high-frequency signal transceiver in below (11); Whether block up according to the time detecting of a vehicle-mounted high-frequency signal transceiver (11) through the beam angle of directional antenna (83).
11. issue road information and the device that detects vehicle travel situations and attribute for one kind; Comprise wagon detector, traffic congestion detecting device and vehicle property detector; Vehicle property detector wherein is made up of vehicle-mounted high-frequency signal transceiver (11) and vehicle attribute display device (51), it is characterized in that vehicle-mounted high-frequency signal transceiver (11) and vehicle attribute display device (51) use directional antenna to transmit and receive high frequency radio wave F; Use Zig, Bee communication protocol or wireless LAN communication agreement mutual communication.
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| CN2011204552614U CN202454081U (en) | 2011-11-16 | 2011-11-16 | Device capable of publishing road information and detecting vehicle driving condition and property |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637298A (en) * | 2013-11-12 | 2015-05-20 | 刘伟南 | Vehicle detecting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104637298A (en) * | 2013-11-12 | 2015-05-20 | 刘伟南 | Vehicle detecting device |
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