CN206961323U - A kind of traffic light control system for emergency vehicle - Google Patents

Abstract

The utility model relates to a traffic light control system for emergency vehicles. The system includes a state monitoring module, a control module and a traffic management center server. The state monitoring module is arranged on the traffic light and connected with the control module. The control module is respectively connected with the traffic management center server and the traffic light, and the state monitoring module includes a vehicle type monitoring unit and a vehicle speed monitoring unit, and the vehicle type monitoring unit and the vehicle speed monitoring unit are both connected with the control module. Compared with the prior art, the utility model has the advantages of being easy to implement, saving costs, being convenient for emergency vehicles to pass, and the like.

Description

A traffic light control system for emergency vehicles

technical field

The utility model relates to the field of traffic control, in particular to a traffic light control system for emergency vehicles.

Background technique

Traffic lights are generally set periodically. In the traffic control system, there is not too much consideration for the special needs of traffic. For example: when vehicles with special needs such as fire trucks and ambulances need to pass through the intersection urgently, the regulations stipulate that they can On the premise of ensuring safety, run a red light, but when there is a serious traffic jam in the city, private cars can only line up to pass the intersection one by one, and there is no way to give way to emergency traffic vehicles.

Patent CN201510337760.6 proposes a traffic emergency intervention system and method, which collects and recognizes images of vehicles through smart cameras, and calculates its running route and possible traffic light numbers when an emergency vehicle appears, so as to control the traffic lights. Although this method can allow emergency vehicles to pass quickly, it requires very high accuracy of image recognition technology, a large amount of calculation, and high consumption costs, so it is not suitable for general promotion.

Utility model content

The purpose of this utility model is to provide a traffic light control system for emergency vehicles to solve the above problems.

The purpose of this utility model can be achieved through the following technical solutions:

A traffic light control system for emergency vehicles, the system includes a state monitoring module, a control module and a traffic management center server, the state monitoring module is arranged on the traffic light and connected with the control module, and the control modules are respectively It is connected with the traffic management center server and the traffic light, and the state monitoring module includes a vehicle type monitoring unit and a vehicle speed monitoring unit, and the vehicle type monitoring unit and the vehicle speed monitoring unit are both connected with the control module.

The vehicle type monitoring unit includes a camera and an image processor connected to each other, the camera and the image processor are both arranged on the traffic lights, and the image processor is connected to the control module.

The vehicle speed monitoring unit includes a speedometer, which is arranged on the traffic light and connected with the control module.

The state monitoring module also includes a wireless signal transmitter, and the wireless signal transmitter is respectively connected with the vehicle type monitoring unit, the vehicle speed monitoring unit and the control module.

The control module includes a wireless signal receiver, a switch, an MCU control chip and a control execution component, the wireless signal receiver is connected to the status monitoring module and the MCU control chip respectively, and the switch is connected to the traffic management center server and the MCU control chip respectively connected, the control execution component is respectively connected with the MCU control chip and the traffic lights.

The control execution component includes a delayer, and the delayer is respectively connected with the MCU control chip and the traffic lights.

The state monitoring module also includes a sound sensor, which is arranged on the traffic light and connected with the control module.

The system also includes a signal generator for communicating with the vehicle, the signal generator being disposed on the traffic light.

Compared with the prior art, the utility model has the following beneficial effects:

(1) The traffic light control system proposed by the utility model, by setting the vehicle type monitoring unit and the vehicle speed monitoring unit in the state monitoring module, only needs to identify the license plate of the vehicle through the camera and image processor, and then communicate with the traffic management center By comparing the data on the server, the emergency vehicle can be identified, and then the speed of the emergency vehicle can be determined through the vehicle speed monitoring unit to determine the time when it reaches the traffic light. Since the recognition of automobile license plates is already a very high level of existing technology and is often used in traffic control, this system requires lower precision for image recognition, is easy to implement and lower cost, has a wide range of applications, and has strong practical performance.

(2) The status monitoring module also includes a wireless signal transmitter, which sends the monitored status information to the control module through wireless signals, making the deployment location of the control module more flexible and getting rid of geographical restrictions.

(3) The control module includes a switch, and the data on the server of the traffic management center is transmitted through the switch to ensure the stability of data transmission, thereby ensuring the stability of the control system.

(4) The control executive component includes a signal switcher and a delayer, except that when the traffic light itself is in a red state, the signal switcher can be used to immediately switch the traffic light to a green light to facilitate the rapid passage of emergency vehicles. At the same time, through the delayer, When it is calculated that the remaining time of the existing green light is not enough for emergency vehicles to pass, the green light time is extended to further ensure the rapid passage of emergency vehicles and improve the stability of the system.

(5) The state monitoring module also includes a sound sensor, which can initially identify the sound. When emergency vehicles such as ambulances and police cars sound their whistles, they can quickly identify such emergency vehicles, which improves the accuracy of identification.

(6) The traffic light control system also includes a signal generator. After identifying the emergency vehicle, on the one hand, it can exchange information with the emergency vehicle through the signal generator to determine the driving information of the emergency vehicle. On the other hand, it can also communicate with other vehicles. Information exchange facilitates other vehicles to give way to emergency vehicles.

Description of drawings

FIG. 1 is a schematic structural diagram of a traffic light control system for emergency vehicles;

Fig. 2 is the control flowchart of the traffic light control system of this emergency vehicle;

Among them, 1 is a status monitoring module, 2 is a control module, 3 is a traffic management center server, 4 is a traffic light, 11 is a camera, 12 is an image processor, 13 is a speedometer, 14 is a wireless signal transmitter, 21 is a wireless The signal receiver, 22 is an MCU control chip, 23 is a switch, and 24 is a control execution component.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the utility model, and the detailed implementation and specific operation process are given, but the protection scope of the utility model is not limited to the following examples.

As shown in Figure 1, a traffic light control system for emergency vehicles is provided in this embodiment, including a state monitoring module 1, a control module 2 and a traffic management center server 3, and the state monitoring module 1 is arranged on a traffic light 4 , and connected with the control module 2, the control module 2 is connected with the traffic management center server 3 and the traffic light 4 respectively, the state monitoring module 1 includes the vehicle type monitoring unit and the vehicle speed monitoring unit, the vehicle type monitoring unit and the vehicle speed monitoring unit are connected with Control module 2 is connected.

Wherein, the vehicle type monitoring unit includes a camera 11 and an image processor 12 connected to each other, the camera 11 and the image processor 12 are both arranged on the traffic light 4 , and the image processor 12 is connected to the control module 2 . The vehicle speed monitoring unit includes a speedometer 13 , which is arranged on the traffic light 4 and connected with the control module 2 . The state monitoring module 1 also includes a wireless signal transmitter 14 , and the wireless signal transmitter 14 is respectively connected with the vehicle type monitoring unit, the vehicle speed monitoring unit and the control module 2 . The control module 2 includes a wireless signal receiver 21, a switch 23, an MCU control chip 22 and a control execution component 24. The wireless signal receiver 21 is connected to the status monitoring module 1 and the MCU control chip 22 respectively, and the switch 23 is connected to the traffic management center server 3 respectively. It is connected with the MCU control chip 22 , and the control execution component 24 is connected with the MCU control chip 22 and the traffic lights 4 respectively. The control execution component 24 includes a delayer, and the delayer is connected with the MCU control chip 22 and the traffic light 4 respectively. The state monitoring module 1 also includes a sound sensor, which is arranged on the traffic light 4 and connected to the control module 2 . The system also includes a signal generator for communicating with the vehicle, and the signal generator is arranged on the traffic light 4 .

The workflow of the above-mentioned system is shown in Figure 2. When the system is working, first the camera 11 in the state monitoring module 1 takes pictures of passing vehicles, and if the sound sensor captures the sound signal sent by the emergency vehicle, it is transmitted to the control module 2 , the control module 2 sends a control signal to the camera 11 to identify the current passing vehicle license plate, if the sound sensor does not capture the sound signal, the camera 11 recognizes the license plates of the passing vehicles in order, and the camera 11 transmits the captured license plate image To the image processor 12, since the image capture of the vehicle license plate by the camera is the most basic means of realization in the existing traffic control, the accuracy requirements for image recognition are relatively low and easy to implement. After the image processor 12 extracts and filters, pass The wireless signal transmitter 14 transmits to the control module 2, and the control module 2 first receives the image signal by the wireless signal receiver 21, and then transmits to the MCU control chip 22, and the MCU control chip 22 is connected to the traffic management center server 3 by the switch 23, and the image signal Compared with the image of the traffic management center server 3, if it is recognized that the vehicle corresponding to the license plate is an emergency vehicle, the speedometer 13 measures the speed of the vehicle corresponding to the license plate, and transmits the speed to the MCU control chip 22, and the MCU control chip 22 Calculate the time t when the vehicle arrives at the traffic light 4 according to the speed, and detect the situation of the traffic light 4, if it is a green light and the time of the green light is greater than t+8s, then the controller sends a signal of no operation to the control execution component 24, If the time of the green light is less than t+8s, the controller controls the delayer to extend the time of the green light to t+8s, so as to prevent the emergency vehicle from changing color before passing the traffic light at the intersection and causing traffic accidents; if it is a red light and the time of the red light is less than t+10s, then the controller sends a signal of no operation to the control executive component 24, so that pedestrians have enough time to pass through the intersection, if the red light time is greater than t+10s, the controller controls the delayer to shorten the red light The time is up to t+10s so that emergency vehicles can quickly pass through the traffic lights.

Claims (8)

1. a kind of traffic light control system for emergency vehicle, it is characterised in that the system includes state monitoring module, control Molding block and traffic control center server, the state monitoring module is arranged on traffic lights, and is connected with control module, institute State control module to be connected with traffic control center server and traffic lights respectively, the state monitoring module is supervised including type of vehicle Unit and car speed monitoring unit are surveyed, the type of vehicle monitoring unit and car speed monitoring unit connect with control module Connect.

2. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the type of vehicle Monitoring unit includes the camera and image processor being connected with each other, and the camera and image processor may be contained within traffic lights On, described image processor is connected with control module.

3. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the car speed Monitoring unit includes tachymeter, and the tachymeter is arranged on traffic lights, is connected with control module.

4. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the status monitoring Module also includes wireless signal transmitter, and the wireless signal transmitter is supervised with type of vehicle monitoring unit, car speed respectively Unit is surveyed to connect with control module.

5. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the control module Including wireless signal receiver, interchanger, MCU control chips and control executive module, the wireless signal receiver respectively with State monitoring module connects with MCU control chips, the interchanger respectively with traffic control center server and MCU control chips Connection, the control executive module are connected with MCU control chips and traffic lights respectively.

6. the traffic light control system according to claim 5 for emergency vehicle, it is characterised in that the control performs Component includes delayer, and the delayer is connected with MCU control chips and traffic lights respectively.

7. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the status monitoring Module also includes sound transducer, and the sound transducer is arranged on traffic lights, and is connected with control module.

8. the traffic light control system according to claim 1 for emergency vehicle, it is characterised in that the system is also wrapped Include and be arranged at for the signal generator with vehicle communication, the signal generator on traffic lights.