CN102509463A - System and method for prompting drivers to know acquisition condition of priority signal - Google Patents

Abstract

The invention discloses a system for prompting the driver whether to obtain a priority signal. A video detection unit is used to detect the license plate number information of a driving vehicle; When the number information matches, according to the driving direction of the vehicle, a priority control signal is sent to the signal light control unit to provide a priority signal for the bus, and the priority signal processing unit installed in the intersection signal machine processes the priority signal and sends it to the bus. The priority signal prompting unit on the vehicle prompts the driver. In the present invention, information display boards are also arranged at intersections to prompt drivers in the two driving directions whether there are public transport vehicles that have obtained priority signals, how the signal lights will change in the next step, and vehicle drivers in the two directions display the boards according to the information. The prompted information can be responded immediately, whether to continue driving through the intersection or slow down and stop to wait.

Description

System and method for prompting driver to obtain priority signal

technical field

The invention relates to the field of intelligent traffic control, in particular to a system and method for prompting a driver whether to obtain a priority signal.

Background technique

Urban public transport is an important part of green transportation and low-carbon life. With the rapid development of social economy, urban population is becoming more and more dense, and the problem of urban road congestion is becoming more and more prominent, which has also become an important factor affecting people's living standards. In order to alleviate traffic congestion and meet people's travel needs, signal priority control is implemented on public transport vehicles, which has been widely used at home and abroad.

Existing Chinese patent literature CN 1431634A discloses a dynamic management system for public transport vehicles, and the real-time collection and display devices for public transport vehicle information are installed at each site. The real-time collection and display devices for public transport vehicle information include infrared receivers and infrared transmitters, and infrared electronic The front of the license plate shell is also equipped with an infrared transmitter and an infrared receiver, so the real-time collection and display device of the bus vehicle information can interact with the infrared electronic license plate of the incoming vehicle to respond to the infrared information, and collect the information transmission of the bus number, fleet, arrival and departure time, etc. To dispatch center and wired and wireless network. The running information of the vehicles that will arrive at the station obtained from the dispatch center and other places is demonstrated on the display, and the management system implements the priority principle for buses and sets a dedicated bus lane for buses to travel. It ensures that the bus runs safely on time, and passengers choose the best bus according to the displayed information, reducing the waiting time. Although the above-mentioned technical scheme can implement the priority principle to public transport vehicles, there are the following problems:

1. When the driver of the bus vehicle reaches the intersection, he cannot judge whether the ground receiving and processing device has processed his priority request. If the current signal is a green light signal and is about to change to a red light signal, the driver does not know the traffic signal. Whether the control machine will keep the green light for itself; if it is currently a red light state, the driver cannot be sure that the traffic signal control machine will quickly set the signal light to green in order to allow himself to pass first.

2. In actual situations, there may be buses passing in both directions. At this time, the traffic signal controller can only provide priority signals for buses in one direction. At this time, the driving of buses in two directions None of the players can be sure whether they have obtained a priority signal, and cannot make a reasonable plan for their next move.

3. Similarly, drivers of non-transit vehicles cannot know whether the traffic signal controller has provided a priority signal for public vehicles, that is, when the green light is on the driving direction, they do not know whether the signal light will be turned on by a public vehicle in the other direction. Provide priority signals and change to yellow and red lights in advance, so they cannot determine whether they need to slow down and wait or speed up to pass; when the driver of a non-transit vehicle observes that the signal light in front is red and will change to green light immediately, the driver cannot determine the traffic signal Whether the machine will extend the red light time in the current direction of travel because it provides priority signals for buses in the other direction, so it is not sure whether it needs to continue to stop and wait or prepare to start the vehicle.

4. The above-mentioned technical scheme requires that the license plate installed on the bus is an infrared electronic license plate, not an ordinary license plate; in addition, to adopt the above-mentioned technical scheme to provide a priority signal for the bus, it is necessary to set up a real-time collection and display device for bus information at each intersection station to realize the integration with infrared The electronic license plate interactively responds to infrared information, which increases the complexity of the entire system.

Existing Chinese patent document CN 101334934A discloses a kind of vehicle-mounted traffic display device, and this device is the traffic signal indicating device that is arranged in the car and indicates the intersection signal ahead, and described indicating device comprises, a display panel, is connected with the display panel Signal receiving device. The display panel also has a sounding horn. When in use, the device receives the data of the traffic lights at the crossing ahead and displays them on the display panel. If the crossing ahead is a red light, the display panel will show that the crossing ahead is a red light and the countdown seconds of the red light will be displayed. Otherwise, if So is the green light. Adopt the vehicle-mounted traffic display device in the above-mentioned technical scheme, although can display the state of the signal light at the crossing ahead, but for the driver, when the vehicle arrives at the crossing, whether he sees the display of the signal light at the crossing ahead or sees the state of the signal light in his own car It shows that in the following two situations, it is still impossible to determine whether you should speed up to pass the intersection according to the color of the current signal light and the remaining time:

1. The intersection signal light is currently showing a red light, but the countdown display is about to turn green. The driver is not sure whether the traffic signal will extend the time of the red light in the current direction because it provides priority signals for buses in the other direction. That is, if you are not sure whether you need to slow down and drive, and then stop and wait when you reach the intersection;

2. The intersection signal light is currently showing a green light, but the countdown display is about to turn to a yellow light. The driver does not know whether the signal light will change to a yellow light in advance because it provides a priority signal for buses in the other direction, that is, the driver cannot judge whether he or she You can speed up and pass the intersection quickly to avoid unnecessary waiting.

Contents of the invention

The technical problem to be solved by the present invention is that the bus driver in the prior art cannot know whether he has obtained the priority signal when driving to the intersection, and the driver of the non-bus vehicle cannot know whether the signal lamp has provided the priority signal for the bus. The lights are not changed according to the normal changing rules, so that neither the bus driver nor the non-bus driver can take corresponding measures according to the current signal light state, and are in a relatively passive state.

In order to solve the above technical problems, the present invention provides a system for prompting the driver whether to obtain the priority signal, including

Priority signal prompt unit: installed on the bus, with unique ID information, to provide the driver with information on the color status of the signal lights at the intersection ahead and information on the remaining time;

Video detection unit: set on a road section at a certain distance from the intersection, it has number information associated with the release phase, and is used to detect the license plate number information of the driving vehicle;

Information display boards: installed in the downstream direction of vehicles at intersections, and each information display board has a unique identification number;

Data processing unit: set inside the command and control center, including

Data receiving module: used to receive the license plate number information of the driving vehicle detected by the video detection unit;

Data storage module: used to store the license plate number information of the bus, the ID information of the priority signal prompt unit, the identification number of the information display board set at the intersection, the number information of the video detection unit, and the release phase information associated with the number of the video detection unit ;

Command output module: output signal light control commands to control intersection signal lights to provide priority signals for buses;

The data processing unit also includes a comparison and judgment module: used to compare the license plate number information of the driving vehicle received by the data receiving module with the license plate number information of the bus stored in the data storage module, and determine the priority signal when the license plate number information matches. Prompt the ID information of the unit, search for the video detection unit number that detects the bus license plate number information, and determine the release phase information;

The system also includes a priority signal processing unit: installed in the intersection signal machine, after processing the priority signal, it sends it to the priority signal prompting unit corresponding to the ID information, and the priority signal processing unit and the priority signal prompting unit realize the signal through the wireless communication unit. transmission;

An information display board control module is also provided in the priority signal processing unit, and the information display board control module controls the information display boards in different directions to display the following information according to whether there is a bus to obtain a priority traffic signal:

The information display board set in the priority release direction indicates that the command and control center has provided priority signals for buses traveling in this direction, and the vehicles can pass through the intersection normally;

The information display board installed in the non-priority release direction reminds the command and control center that the bus in the other direction has provided a priority signal and needs to slow down and stop.

The priority signal prompt unit includes a video prompt module, and the priority signal processing unit includes a video processing module, and the video processing module processes the priority signal into video information that can be played by the video prompt module and sends it to the video prompt module for playback .

The priority signal processing unit includes an image processing module, the priority signal prompting unit uses an image projection module, and the image processing module processes the priority signal and sends it to the image projection module for projection on the windshield.

The priority signal prompt unit further includes an audio prompt module, and the priority signal processing unit includes an audio processing module, the audio processing module processes the priority signal into a voice signal and sends it to the audio prompt module for playback.

The video detection unit includes:

Video acquisition equipment: used to collect image information of driving vehicles;

License plate recognition module: used to convert the image information of the driving vehicle into license plate number information.

The video collection device is a camera, which is set facing the direction of the incoming vehicle on the lane on the side of the intersection where the vehicle is about to enter.

The distance between the video detection unit and the intersection center is greater than the distance traveled by the vehicle at the speed limit of the road section within the minimum green time.

The information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection;

When the information display board control module outputs a control signal "1" to the LED electronic display, the LED electronic display displays the information of the priority release signal;

When the information display board control module outputs a control signal "0" to the LED electronic display, the LED electronic display will display the information that the opponent's vehicle has obtained a priority release signal.

The present invention also provides a method for prompting the driver whether to obtain the priority signal, comprising the following steps:

a. The video detection unit installed on the road section with a certain distance from the intersection detects the license plate number information of the driving vehicle; the information display board is installed in the downstream direction of the vehicle at the intersection, and each information display board has a unique identification number;

b. The data processing unit stores the license plate number information of the bus, the ID information of the priority signal prompt unit, the video detection unit number information, the identification number of the information display board at the intersection, and the signal lamp phase information associated with the video detection unit number. The data storage module;

c. The data receiving module receives the license plate number information of the driving vehicle detected by the video detection unit;

d, the comparison judgment module compares the license plate number information of the detected driving vehicle with the license plate number information of the bus stored in the data storage module, and judges whether the detected driving vehicle information matches the license plate number information of the bus; determine after matching The ID information of the priority signal prompt unit and the serial number information of the video detection unit that detects the license plate number information of the bus, determine the release phase, and control the intersection signal lights to provide priority signals for the bus through the command output module;

e. The priority signal processing unit receives the priority signal control command output by the command output module, processes the priority signal and sends it to the priority signal prompt unit corresponding to the ID information through the wireless communication unit to prompt the driver;

The information display board control module controls the information display board set in the priority release direction to prompt the information of obtaining the priority release signal;

The information display board control module controls the information display board arranged in the non-priority release direction to display the information that a priority signal has been provided for the other party's bus.

The license plate number information of the driving vehicle described in step a is obtained by converting the image information of the driving vehicle collected by the video acquisition device through the number plate recognition module.

The priority signal prompting unit described in step e includes a video prompt module; the priority signal processing unit includes a video processing module;

The video processing module sends the priority signal processing video signal to the video prompt module through the wireless communication unit for playing.

The priority signal prompting unit in step e includes an image processing module; the priority signal prompting unit includes an image projection module;

The image processing module processes the priority signal and sends it to the image projection module through the wireless communication unit for projection on the windshield of the bus.

The priority signal processing unit in step e also includes an audio processing module; the priority signal prompt unit also includes an audio prompt module;

The audio processing module processes the priority signal into an audio signal and sends it to the audio prompt module through the wireless communication unit for playback.

In the step e, the information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection;

The information display board control module sends a "1" signal to the LED electronic display screen set in the priority release direction, and sends a "0" signal to the LED electronic display screen set in the non-priority release direction.

The beneficial effects of the present invention have:

1. The priority signal prompt unit in the present invention, when the bus vehicle obtains the priority signal, can prompt the driver through video and voice, so that the driver can know whether he can pass the intersection first, and can immediately respond and determine Whether oneself continue to drive through the crossing or should slow down and stop and wait; meanwhile, the information display board arranged in the downstream direction of the vehicle running at the crossing in the present invention can prompt drivers in the two driving directions whether there is a bus vehicle that has obtained a priority signal, How will the signal lights change in the next step, and the drivers of vehicles in both directions can react immediately according to the information prompted by the information display board, whether to continue driving through the intersection or slow down and stop to wait.

2, the application of the present invention is arranged on a plurality of video detection units on the road with a certain distance from the intersection to detect the license plate number information of the driving vehicle, and the intersection is generally provided with video detection units, which can be directly used; the data processing unit will use the license plate number of the driving vehicle The number information is compared with the stored bus license plate number information, and when the license plate number information matches, a priority control signal is sent to the signal lamp control unit. This process does not require additional infrared equipment, and does not require all buses to be equipped with infrared electronic license plates. The system is simple and accurate.

Description of drawings

Fig. 1 is the setting position of a certain crossing video detection unit;

Fig. 2 is a block diagram of an embodiment of the present invention;

Fig. 3 is a block diagram of another embodiment of the present invention

Figure 4 is a flow chart of the system work.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

The present invention provides, the present invention provides a system for prompting the driver whether to obtain a priority signal, including a priority signal prompt unit: set on the bus, with uniquely determined ID information, providing the driver with information on the color status of the signal lights at the intersection ahead and remaining time information;

Video detection unit: set on the road section with a certain distance from the intersection, with number information associated with the release phase, used to detect the license plate number information of the driving vehicle; in this embodiment, the video acquisition device is a camera, which faces the incoming vehicle Directions are set on the lane on the side of the intersection the vehicle is about to enter.

The distance between the video detection unit and the intersection center is greater than the distance traveled by the vehicle at the speed limit of the road section within the minimum green time. As shown in Figure 1, it is arranged on the lane on the side of the intersection that the vehicle is about to drive into in the direction of the incoming vehicle. The distance traveled by the value. That is, when the bus is driving to the intersection, the signal light in the other direction has just turned green, and the vehicles in the other direction have already started to pass. The priority signal can only be provided for the bus vehicles after the red light, and the time required for this process is the minimum green time.

Information display boards: installed in the downstream direction of vehicles at intersections, and each information display board has a unique identification number;

Data processing unit: set inside the command and control center, including

Data receiving module: used to receive the license plate number information of the driving vehicle detected by the video detection unit;

Data storage module: used to store the license plate number information of the bus, the ID information of the priority signal prompt unit, the identification number of the information display board set at the intersection, the number information of the video detection unit, and the release phase information associated with the number of the video detection unit ;

Command output module: output signal light control commands to control intersection signal lights to provide priority signals for buses;

The data processing unit also includes a comparison and judgment module: used to compare the license plate number information of the driving vehicle received by the data receiving module with the license plate number information of the bus stored in the data storage module, and determine the priority signal when the license plate number information matches. Prompt the ID information of the unit, search for the video detection unit number that detects the bus license plate number information, and determine the release phase information;

The system also includes a priority signal processing unit: installed in the intersection signal machine, after processing the priority signal, it sends it to the priority signal prompting unit corresponding to the ID information, and the priority signal processing unit and the priority signal prompting unit realize the signal through the wireless communication unit. transmission;

An information display board control module is also provided in the priority signal processing unit, and the information display board control module controls the information display boards in different directions to display the following information according to whether there is a bus to obtain a priority traffic signal:

The information display board set in the priority release direction indicates that the command and control center has provided priority signals for buses traveling in this direction, and the vehicles can pass through the intersection normally;

The information display board installed in the non-priority release direction reminds the command and control center that the bus in the other direction has provided a priority signal and needs to slow down and stop.

The information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection;

When the information display board control module outputs a control signal "1" to the LED electronic display, the LED electronic display displays the information of the priority release signal;

When the information display board control module outputs a control signal "0" to the LED electronic display, the LED electronic display will display the information that the opponent's vehicle has obtained a priority release signal.

The priority signal prompt unit includes a video prompt module, and the priority signal processing unit includes a video processing module, and the video processing module processes the priority signal into video information that can be played by the video prompt module and sends it to the video prompt module for playback .

The present invention also provides a method for prompting the driver whether to obtain the priority signal, comprising the following steps:

a. The video detection unit installed on the road section with a certain distance from the intersection detects the license plate number information of the driving vehicle; the information display board is set in the downstream direction of the vehicle at the intersection, and each information display board has a unique identification number; the driving The license plate number information of the vehicle is obtained by converting the image information of the driving vehicle collected by the video acquisition device through the number plate recognition module;

b. The data processing unit stores the license plate number information of the bus, the ID information of the priority signal prompt unit, the video detection unit number information, the identification number of the information display board at the intersection, and the signal lamp phase information associated with the video detection unit number. The data storage module;

c. The data receiving module receives the license plate number information of the driving vehicle detected by the video detection unit;

d, the comparison judgment module compares the license plate number information of the detected driving vehicle with the license plate number information of the bus stored in the data storage module, and judges whether the detected driving vehicle information matches the license plate number information of the bus; determine after matching The ID information of the priority signal prompt unit and the serial number information of the video detection unit that detects the license plate number information of the bus, determine the release phase, and control the intersection signal lights to provide priority signals for the bus through the command output module;

e. The priority signal processing unit receives the priority signal control command output by the command output module, processes the priority signal and sends it to the priority signal prompt unit corresponding to the ID information through the wireless communication unit to prompt the driver;

The information display board control module controls the information display board set in the priority release direction to prompt the information of obtaining the priority release signal;

The information display board control module controls the information display board arranged in the non-priority release direction to display the information that a priority signal has been provided for the other party's bus.

The priority signal prompting unit described in step e includes a video prompt module; the priority signal processing unit includes a video processing module;

The video processing module sends the priority signal processing video signal to the video prompt module through the wireless communication unit for playing.

In the step e, the information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection;

The information display board control module sends a "1" signal to the LED electronic display screen set in the priority release direction, and sends a "0" signal to the LED electronic display screen set in the non-priority release direction.

The priority signal processing unit also includes an audio processing module; the priority signal prompt unit also includes an audio prompt module;

The audio processing module processes the priority signal into an audio signal and sends it to the audio prompt module through the wireless communication unit for playback.

The working process of the control system that provides priority signals for public transport vehicles in the present embodiment is as shown in Figure 4. No. 1-N (1-N is a natural number) video acquisition unit collects the image information of the vehicle on the road, and the image information has For the license plate number information of the vehicle, the license plate recognition module converts the above image into the license plate number of the driving vehicle.

The data receiving module in the data processing unit reads the license plate number information of the vehicle. The comparison judgment module compares the license plate number information of the driving vehicle with the license plate number information of the bus vehicle stored in the data storage module, and judges whether the license plate number of the driving vehicle matches the bus license plate number of the data storage module; The ID information is uniquely determined, so the ID information of the priority signal prompt unit set on each bus is uniquely determined, so after the license plate number matches, the ID information of the priority signal prompt unit set on the vehicle has been determined, whether the query is n( n=1) The license plate number read by No. video detection unit, if the license plate number read by No. n video detection unit, promptly detect the serial number information and the video detection of the video detection unit of the driving vehicle matching with the bus license plate number After the phase of the signal light corresponding to the unit, the command output module sends a control command to the signal light to provide a priority signal for the bus, and at the same time the priority signal processing unit processes the priority signal and sends it to the priority signal prompt unit corresponding to the ID information for prompting. If it is not the license plate number read by No. n video detection unit, then continue to inquire about (n+1) No. video detection unit, and so on, until detecting the serial number information of the video detection unit of the driving vehicle matching the bus license plate number And the signal light phase corresponding to the video detection unit.

For example, when the front signal light is in the green light state, and changes the light after two seconds, after the bus vehicle travels to the intersection, the data processing unit provides a priority signal for the bus vehicle after judging, and then the video processing module will turn the front intersection signal light After the light color status and the remaining time are processed, the video prompt module can display the light color of the current signal light, and at the same time can prompt the driver in text form to obtain the priority signal to speed up. "; and the audio prompt module also prompts the driver through a voice signal, for example, it can play: "Priority pass". It should be noted that the color status of the signal light here is displayed as a green light, and the remaining time of the signal light remains unchanged for two seconds until the bus passes the intersection.

And the information display board control module inside the priority signal processing unit will control the corresponding display board display information according to the release phase. The identification numbers of the information display boards set in the east-west direction of the intersection are c and d. If the north-south direction is released, the information display board control module sends a control signal "1" to the information display boards a and b, prompting the information of obtaining the priority release signal; sends a control signal "0" to the information display boards c and d, indicating that it has been The opposing bus provides priority signal information. Then the drivers in both directions can determine whether they can pass the intersection normally or need to stop and wait after receiving the prompt, so as to prepare for the next step.

Example 2

The difference between this embodiment and Embodiment 1 is that, as shown in Figure 3, the priority signal processing unit includes an image processing module, the priority signal prompting unit adopts an image projection module, and the image processing module processes the priority signal Then send to the image projection module to project on the windshield. Simultaneously cooperate with described audio prompting module to carry out voice prompting, prompt driver whether to obtain priority signal, decide whether oneself should speed up to pass the crossing or should stop and wait.

Although the present invention has been described in detail through specific implementation methods, those skilled in the art should understand that any changes in form and details made on this basis that do not exceed the scope of protection of the claims belong to the present invention. The scope of the invention to be protected.

Claims (14)

1. A system to prompt the driver whether to get priority signal, including Priority signal prompt unit: installed on the bus, with unique ID information, to provide the driver with information on the color status of the signal lights at the intersection ahead and information on the remaining time; Video detection unit: set on a road section at a certain distance from the intersection, it has number information associated with the release phase, and is used to detect the license plate number information of the driving vehicle; Information display boards: installed in the downstream direction of vehicles at intersections, and each information display board has a unique identification number; Data processing unit: set inside the command and control center, including Data receiving module: used to receive the license plate number information of the driving vehicle detected by the video detection unit; Data storage module: used to store the license plate number information of the bus, the ID information of the priority signal prompt unit, the identification number of the information display board set at the intersection, the number information of the video detection unit, and the release phase information associated with the number of the video detection unit ; Command output module: output signal light control commands to control intersection signal lights to provide priority signals for buses; It is characterized by: The data processing unit also includes a comparison and judgment module: used to compare the license plate number information of the driving vehicle received by the data receiving module with the license plate number information of the bus stored in the data storage module, and determine the priority signal when the license plate number information matches. Prompt the ID information of the unit, search for the video detection unit number that detects the bus license plate number information, and determine the release phase information; The system also includes a priority signal processing unit: installed in the intersection signal machine, after processing the priority signal, it sends it to the priority signal prompting unit corresponding to the ID information, and the priority signal processing unit and the priority signal prompting unit realize the signal through the wireless communication unit. transmission; An information display board control module is also provided in the priority signal processing unit, and the information display board control module controls the information display boards in different directions to display the following information according to whether there is a bus to obtain a priority traffic signal: The information display board set in the priority release direction indicates that the command and control center has provided priority signals for buses traveling in this direction, and the vehicles can pass through the intersection normally; The information display board installed in the non-priority release direction reminds the command and control center that the bus in the other direction has provided a priority signal and needs to slow down and stop. 2. The system according to claim 1, characterized in that: The priority signal prompt unit includes a video prompt module, and the priority signal processing unit includes a video processing module, and the video processing module processes the priority signal into video information that can be played by the video prompt module and sends it to the video prompt module for playback . 3. The system for prompting the driver according to claim 1 whether to obtain a priority signal, characterized in that: The priority signal processing unit includes an image processing module, the priority signal prompting unit uses an image projection module, and the image processing module processes the priority signal and sends it to the image projection module for projection on the windshield. 4. The system for prompting the driver to obtain the priority signal according to any one of claims 1-3, characterized in that: The priority signal prompt unit further includes an audio prompt module, and the priority signal processing unit includes an audio processing module, the audio processing module processes the priority signal into a voice signal and sends it to the audio prompt module for playback. 5. The system for prompting the driver to obtain the priority signal according to any one of claims 1-4, characterized in that: The video detection unit includes: Video acquisition equipment: used to collect image information of driving vehicles; License plate recognition module: used to convert the image information of the driving vehicle into license plate number information. 6. The system for prompting the driver to obtain the priority signal according to claim 5, characterized in that: The video collection device is a camera, which is set facing the direction of the incoming vehicle on the lane on the side of the intersection where the vehicle is about to enter. 7. The system for prompting the driver whether to obtain the priority signal according to any one of claims 1-6, characterized in that: The distance between the video detection unit and the intersection center is greater than the distance traveled by the vehicle at the speed limit of the road section within the minimum green time. 8. The system for prompting the driver whether to obtain the priority signal according to any one of claims 1-7, characterized in that: The information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection; When the information display board control module outputs a control signal "1" to the LED electronic display, the LED electronic display displays the information of the priority release signal; When the information display board control module outputs a control signal "0" to the LED electronic display, the LED electronic display will display the information that the opponent's vehicle has obtained a priority release signal. 9. A method for prompting the driver to obtain a priority signal, characterized in that: Include the following steps: a. The video detection unit installed on the road section with a certain distance from the intersection detects the license plate number information of the driving vehicle; the information display board is installed in the downstream direction of the vehicle at the intersection, and each information display board has a unique identification number; b. The data processing unit stores the license plate number information of the bus, the ID information of the priority signal prompt unit, the video detection unit number information, the identification number of the information display board at the intersection, and the signal lamp phase information associated with the video detection unit number. The data storage module; c. The data receiving module receives the license plate number information of the driving vehicle detected by the video detection unit; d, the comparison judgment module compares the license plate number information of the detected driving vehicle with the license plate number information of the bus stored in the data storage module, and judges whether the detected driving vehicle information matches the license plate number information of the bus; determine after matching The ID information of the priority signal prompt unit and the serial number information of the video detection unit that detects the license plate number information of the bus, determine the release phase, and control the intersection signal lights to provide priority signals for the bus through the command output module; e. The priority signal processing unit receives the priority signal control command output by the command output module, processes the priority signal and sends it to the priority signal prompt unit corresponding to the ID information through the wireless communication unit to prompt the driver; The information display board control module controls the information display board set in the priority release direction to prompt the information of obtaining the priority release signal; The information display board control module controls the information display board arranged in the non-priority release direction to display the information that a priority signal has been provided for the other party's bus. 10. The method for prompting the driver according to claim 9 whether to obtain the priority signal, characterized in that: The license plate number information of the driving vehicle described in step a is obtained by converting the image information of the driving vehicle collected by the video acquisition device through the number plate recognition module. 11. The method for prompting the driver to obtain the priority signal according to claim 9 or 10, characterized in that: The priority signal prompting unit described in step e includes a video prompt module; the priority signal processing unit includes a video processing module; The video processing module sends the priority signal processing video signal to the video prompt module through the wireless communication unit for playing. 12. The method for prompting the driver to obtain the priority signal according to claim 9 or 10, characterized in that: The priority signal prompting unit in step e includes an image processing module; the priority signal prompting unit includes an image projection module; The image processing module processes the priority signal and sends it to the image projection module through the wireless communication unit for projection on the windshield of the bus. 13. The method for prompting the driver according to claim 11 or 12 whether to obtain a priority signal, characterized in that: The priority signal processing unit in step e also includes an audio processing module; the priority signal prompt unit also includes an audio prompt module; The audio processing module processes the priority signal into an audio signal and sends it to the audio prompt module through the wireless communication unit for playback. 14. The method for prompting the driver whether to obtain a priority signal according to any one of claims 9-14, characterized in that: In the step e, the information display board is composed of four LED electronic display screens arranged in the downstream direction of the vehicle at the intersection; The information display board control module sends a "1" signal to the LED electronic display screen set in the priority release direction, and sends a "0" signal to the LED electronic display screen set in the non-priority release direction.

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