The method and system that a kind of urban transportation is let pass for emergency vehicles
Technical field
The invention belongs to public transport technical field, a kind of method let pass for emergency vehicles particularly to urban transportation
And system.
Background technology
With social development, motor vehicles are increasingly becoming one of main walking-replacing tool of people's trip.The popularization of vehicle
Increase the pressure of urban transportation, but 120,110,119 grade urban SOS work but require breakdown lorry can reach in time now
Field is it is therefore desirable to semaphore is to its prior-release.Traditional emergency vehicles avoid and mostly pertain only to single crossing, arrive in vehicle
When reaching crossing, provide priority pass for it, rescue route is not done with unified planning and reserves and warn in advance.Work as breakdown lorry
When reaching crossing, due to traffic congestion, even if it is provided with prior-release, rescue route also cannot be dredged in time, delay rescue
On opportunity, reduce rescue quality.
Content of the invention
In order to solve the technical problem that above-mentioned background technology proposes, the present invention is intended to provide a kind of urban transportation is emergency car
The method and system let pass, sets up unified emergent travel route to whole rescue route, can not only carry after having an accident
Front, being planned, advance reservation rescues route to corresponding rescue route, and preferentially can allow for it when vehicle reaches crossing
OK, saved rescue time, improve rescue quality.
In order to realize above-mentioned technical purpose, the technical scheme is that:
A kind of method that urban transportation is let pass for emergency vehicles, comprises the following steps:
(1)The car-mounted terminal of emergency vehicles after being connected to rescue information, by vehicle position information, vehicle natural information, car
Fast information, accident spot information, whether return information is sent to control centre by radio communication;
(2)Control centre, according to the road traffic condition between vehicle location and accident spot, cooks up an optimum road
After line, route information is sent to the car-mounted terminal of emergency vehicles, the distance according to speed information and optimal route calculates and answers simultaneously
Anxious vehicle reaches the time of each traffic signaling equipment, and time of by the natural information of emergency vehicles, reaching each traffic signaling equipment and
Reserved lane information is sent to each traffic signaling equipment;
(3)The car-mounted terminal of emergency vehicles goes to accident spot by this route after receiving optimal route, and by vehicle
Positional information, speed information are sent to control centre in real time, and control centre is by the real-time speed information of the emergency vehicles receiving
Compare with the low speed threshold values of setting, when real-time speed is less than low speed threshold values, represent this route congestion, control centre plans again
Route is sent to the car-mounted terminal of emergency vehicles, calculates the time that emergency vehicles reach each traffic signaling equipment on variation route, and will
The natural information of emergency vehicles, the time of each traffic signaling equipment of arrival are sent to each traffic signaling equipment on variation route;Friendship on the way
The information that messenger machine sends according to control centre, in the natural information of electronics screen display emergency vehicles, the arriving of emergency vehicles
Reach time and reserved lane information;
(4)During emergency vehicles exterior traffic mouth, channel radio set up by the semaphore of the car-mounted terminal of emergency vehicles and traffic mouth
Letter, this car information and clearance request are sent to semaphore by emergency vehicles, and semaphore is by the information of vehicles receiving and control
The information of vehicles that the heart is sent is mated, and is confirmed whether to let pass, and after clearance, semaphore is to control centre's transmission clearance vehicle
Information.
Further, step(1)The car-mounted terminal of middle emergency vehicles is realized wireless with control centre by GPRS technology
Communication.
Further, step(2)The natural information of middle emergency vehicles includes the numbering of emergency vehicles and the class of emergency vehicles
Type.
Further, the type of emergency vehicles includes police car, ambulance and fire fighting truck.
Further, different types of emergency vehicles have different current priority, when having many emergency vehicles simultaneously
Reach a traffic mouth, and when their travel direction is inconsistent, semaphore determines according to the current priority of emergency vehicles
Current order.
Further, step(4)The car-mounted terminal of middle emergency vehicles sets up the communication with semaphore by ZigBee technology
Connect.
Further, step(4)In, at once signal lighties are in a disguised form operated after semaphore confirms and can let pass, when
Emergency vehicles behind crossing, control signal lamp reinstatement state at once.
Present invention additionally comprises the system that a kind of urban transportation is let pass for emergency vehicles, including emergency vehicles end, signal generator terminal
And control centre, described emergency vehicles end includes car-mounted terminal and the GPRS module being attached thereto respectively and Zigbee sends
Module, described signal generator terminal includes signal machine controller and the signal lighties being attached thereto respectively, electrical screen and Zigbee receive
Module, car-mounted terminal is realized and the radio communication of control centre by GPRS module, car-mounted terminal pass through Zigbee sending module,
Zigbee receiver module realizes the radio communication with signal machine controller.
The beneficial effect brought using technique scheme:
The present invention is reasonable in design, realization is convenient and practical, after accident occurs, rescue route can be carried out in advance
Planning, advance reservation, before vehicle reaches crossing, crossing vehicle is warned, provide priority pass clothes for emergency vehicles in time
Business, improves rescue efficiency, also builds the environment of safety traffic for people, is easy to promote the use of.
Brief description
Fig. 1 is method of the present invention flow chart.
Fig. 2 is the block diagram of system of the present invention.
Fig. 3 is the road control schematic diagram of the present embodiment.
Specific embodiment
Below with reference to accompanying drawing, technical scheme is described in detail.
Method of the present invention flow chart as shown in Figure 1, a kind of method that urban transportation is let pass for emergency vehicles, including following
Step:
(1)The car-mounted terminal of emergency vehicles after being connected to rescue information, by vehicle position information, vehicle natural information, car
Fast information, accident spot information, whether return information is sent to control centre by radio communication;
(2)Control centre, according to the road traffic condition between vehicle location and accident spot, cooks up an optimum road
After line, route information is sent to the car-mounted terminal of emergency vehicles, the distance according to speed information and optimal route calculates and answers simultaneously
Anxious vehicle reaches the time of each traffic signaling equipment, and time of by the natural information of emergency vehicles, reaching each traffic signaling equipment and
Reserved lane information is sent to each traffic signaling equipment;
(3)The car-mounted terminal of emergency vehicles goes to accident spot by this route after receiving optimal route, and by vehicle
Positional information, speed information are sent to control centre in real time, and control centre is by the real-time speed information of the emergency vehicles receiving
Compare with the low speed threshold values of setting, when real-time speed is less than low speed threshold values, represent this route congestion, control centre plans again
Route is sent to the car-mounted terminal of emergency vehicles, calculates the time that emergency vehicles reach each traffic signaling equipment on variation route, and will
The natural information of emergency vehicles, the time of each traffic signaling equipment of arrival are sent to each traffic signaling equipment on variation route;Friendship on the way
The information that messenger machine sends according to control centre, in the natural information of electronics screen display emergency vehicles, the arriving of emergency vehicles
Reach time and reserved lane information;
(4)During emergency vehicles exterior traffic mouth, channel radio set up by the semaphore of the car-mounted terminal of emergency vehicles and traffic mouth
Letter, this car information and clearance request are sent to semaphore by emergency vehicles, and semaphore is by the information of vehicles receiving and control
The information of vehicles that the heart is sent is mated, and is confirmed whether to let pass, and after clearance, semaphore is to control centre's transmission clearance vehicle
Information.
In the present embodiment, step(1)The car-mounted terminal of middle emergency vehicles passes through GPRS technology and realizes and control centre
Radio communication.
In the present embodiment, step(2)The natural information of middle emergency vehicles includes numbering and the emergency vehicles of emergency vehicles
Type.
In the present embodiment, the type of emergency vehicles includes police car, ambulance and fire fighting truck.
In the present embodiment, different types of emergency vehicles have different current priority, when there being many emergency vehicles
Reach a traffic mouth simultaneously, and when their travel direction is inconsistent, semaphore is according to the current priority of emergency vehicles
Determine current order.
In the present embodiment, step(4)The car-mounted terminal of middle emergency vehicles is set up and semaphore by ZigBee technology
Communication connection.
In the present embodiment, step(4)In, at once signal lighties are in a disguised form grasped after semaphore confirms and can let pass
Make, when emergency vehicles are behind crossing, control signal lamp reinstatement state at once.
The as shown in Figure 2 block diagram of system of the present invention, the system that a kind of urban transportation is let pass for emergency vehicles, including answering
Anxious vehicle end, signal generator terminal and control centre, described emergency vehicles end includes car-mounted terminal and is attached thereto respectively
GPRS module and Zigbee sending module, the signal that described signal generator terminal includes signal machine controller and is attached thereto respectively
Lamp, electrical screen and Zigbee receiver module, car-mounted terminal realizes the radio communication with control centre, vehicle-mounted end by GPRS module
The radio communication with signal machine controller is realized at end by Zigbee sending module, Zigbee receiver module.Emergency vehicles reach
During traffic mouth, by Zigbee sending module and current intersection annunciator, Zigbee receiver module is communicated, and informs at present
The information of vehicle and request are let pass and are confirmed, after current intersection annunciator receives the request clearance information of car-mounted terminal, will receive
The information of vehicles that sends with control centre of information of vehicles mated, if the match is successful, let pass, and according to control centre
The vehicle lane change information sending, changes the state of signal lighties, points out current lane change reason and lane change choosing in electrical screen simultaneously
Select(Straight trip or left and right turning etc.).After clearance, the signal machine controller at current crossing sends vehicle to control centre and lets pass
Information.After receiving confirmation of letting pass, next intersection annunciator is sent with it is next crossing signals machine information for control centre,
In electronics screen display, it is nearest intersection annunciator to next intersection annunciator, and prepares to let pass.When vehicle reaches last
During individual crossing, whether control centre end comprises return according to vehicle, selects whether this priority pass route terminates, if vehicle bag
Information containing return, then, during vehicle return, provide prior-release to vehicle.
The road control schematic diagram of the present embodiment as shown in Figure 3, after receiving rescue information, control centre cooks up optimum
Route is after receiving rescue information, and control centre cooks up optimal route 5-4 to 5-5, and semaphore 5-2,5-3 etc. are in notice board
Upper prompting this track of other vehicles is the reserved track of emergency vehicles 5-7, when control centre detects the speed of emergency vehicles 5-7
When slower, programme path is 5-4 to 5-6 again, and so that 5-5 is recovered to original state, and next intersection annunciator 5-3 hint way changes
Become, and to its reserved route, emergency vehicles 5-7 changes route to 5-6 by force at next crossing, emergency vehicles behind crossing,
Semaphore returns to normal condition.
Above example technological thought only to illustrate the invention is it is impossible to limit protection scope of the present invention with this, every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, each fall within the scope of the present invention
Within.