WO2022088616A1

WO2022088616A1 - Urban traffic education system and method, and device, storage medium and computer program

Info

Publication number: WO2022088616A1
Application number: PCT/CN2021/087464
Authority: WO
Inventors: 姚达琛; 何悦; 李�诚
Original assignee: 北京市商汤科技开发有限公司
Priority date: 2020-10-26
Filing date: 2021-04-15
Publication date: 2022-05-05
Also published as: KR20220058849A; CN112419840A

Abstract

An urban traffic education system (100) and method, and a device (60) and a storage medium (70). The urban traffic education system (100) comprises: a sand table (11); a plurality of stereoscopic models (12), which are arranged on the sand table (11) according to a corresponding proportional relationship and positional relationship; and a plurality of indicator lights, which are mounted on the sand table (11), wherein the stereoscopic models (12) and/or the indicator lights are configured to perform a state transformation according to control instructions, thereby realizing an urban traffic simulation. The urban traffic education system (100) can simulate real urban traffic conditions in real time, thereby achieving a lifelike display effect, and can help a user learn about and understand planning solutions for urban traffic.

Description

Urban traffic education system and method, device, storage medium, computer program

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is based on the Chinese patent application with the application number of 202011158697.7 and the application date of October 26, 2020, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this application in its entirety. .

technical field

The present application relates to the technical field of intelligent transportation, and in particular, to an urban transportation education system, method, device, storage medium, and computer program.

Background technique

In recent years, AI (Artificial Intelligence, artificial intelligence) education has gradually become popular. Most AI education courses are extended on the basis of online course platforms, supplemented by corresponding hardware equipment, such as smart cars, smart robots, etc. AI education involves many algorithms, from speech to images, from traditional algorithms to deep learning. Users are often exposed to content such as positioning, planning, control, and multi-agent. In order to realize the teaching of these contents, it is not enough to rely on the robot itself, and the cooperation of the venue is also required.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an urban traffic education system and method, device, storage medium, and computer program.

The embodiment of the present application provides an urban traffic education system, and the urban traffic education system includes:

sand table;

A plurality of three-dimensional models arranged on the sand table according to the corresponding proportional relationship and positional relationship;

a plurality of indicator lights installed on the sand table;

Wherein, the three-dimensional model and/or the indicator light are configured to perform state transformation according to the control instruction, so as to realize urban traffic simulation.

Through the above method, an urban traffic education system is provided that can simulate real urban traffic conditions in real time, achieve a vivid display effect, and help users learn and understand urban traffic planning schemes.

In some embodiments, the urban transportation education system further includes:

a positioning system, configured to locate the position of the three-dimensional model on the sand table and/or the position of the indicator light to obtain a positioning result;

A host computer, which is connected in communication with the positioning system, and is configured to control the three-dimensional model and/or the indicator light according to the positioning result of the positioning system on the three-dimensional model and/or the indicator light Carry out state transformation to realize urban traffic simulation.

Through the above method, a solution for real-time positioning and real-time control of traffic elements in an urban traffic education system through a positioning system and a host computer is provided.

In some embodiments, the solid model includes buildings, roads, and traffic signs, and the indicator lights include traffic lights, wherein the state of the traffic lights is controlled by the host computer.

The building includes a bus stop, the bus stop includes LED lights, and the state of the LED lights in the bus stop is controlled by the host computer.

Through the above method, a three-dimensional model constituting a sand table is provided, and a bus station is provided, and the number of waiting persons in the bus station is visually displayed by the number of lit LED lights.

In some embodiments, the sand table is further provided with a miniature smart car controlled by the host computer, and the miniature smart car runs on the road of the sand table based on the control instructions of the host computer.

In the above manner, a miniature smart car is provided, which is controlled by a host computer to simulate traffic conditions.

In some embodiments, the positioning system includes a camera disposed above the sand table, the camera is configured to capture real-time traffic images on the sand table, and upload the real-time traffic images to the host computer; the The host computer recognizes the position of the miniature smart car in the sand table through the target recognition technology, and plans the action path of the miniature smart car according to the position of the miniature smart car in the sand table, so as to detect the miniature smart car. Smart car control;

Or, the camera is further configured to send the real-time traffic image to the miniature smart car, and the miniature smart car locates its own position according to the real-time traffic image, and performs path planning according to the positioning result of its own position, achieve autonomous driving.

In the above manner, a positioning system is provided, which locates the position of the miniature smart car on the sand table through the real-time traffic image collected by the positioning system.

In some embodiments, the positioning system includes at least one of the following: an ultrasonic obstacle avoidance sensor arranged in the miniature smart car, a single-line lidar sensor arranged in the miniature smart car, and a miniature smart car. Infrared obstacle avoidance sensors in the car, and gravity sensors arranged under the road.

Through the above methods, the miniature smart car can adjust the running direction based on the sensor data when it runs according to the planned route, showing a more realistic urban traffic situation.

In some embodiments, the urban traffic education system further includes a projection system located above the sand table, the projection system includes a projector disposed above the sand table, and the projector is communicatively connected to the host computer;

The host computer constructs a three-dimensional model of the sand table through the real-time traffic images uploaded by the positioning system, and simulates a traffic element model in the three-dimensional model of the sand table; the host computer sends the traffic element model to the host computer. The projection system is used to project the traffic event composed of the traffic element model on the sand table through the projector.

Through the above method, the projection system simulates a traffic element model, and replaces the static elements in the prior art with dynamic elements, thereby improving the flexibility and scalability of the urban traffic education system.

In some embodiments, the traffic element model includes pedestrians, the visualized path of the miniature smart car, and traffic police.

Through the above methods, the projection system materializes the static elements, thereby making the educational scene real.

In some embodiments, the sand table is provided with a serial port, and the host computer communicates through the serial port to update the state of the three-dimensional model in real time and/or customize and expand the elements on the sand table.

Through the above methods, the urban traffic education system provides a solution for customizing the expansion of the traffic elements on the sand table through serial communication.

The embodiment of the present application provides an urban traffic education method, the urban traffic education method is applied to the above-mentioned urban traffic education system, and the urban traffic education method includes:

Get control instructions;

Based on the control instructions, state transitions are performed on a plurality of solid models on the sand table, and/or state transitions are performed on the indicator lights on the sand table based on the control instructions.

Through the above method, an urban traffic education method is provided, which can simulate real urban traffic conditions in real time, achieve a vivid display effect, and help users learn and understand urban traffic planning schemes.

In some embodiments, the urban traffic education method further comprises:

Obtain the positioning result obtained by positioning the position of the three-dimensional model on the sand table and/or the position of the indicator light by the positioning system in the urban traffic education system;

The control instruction is generated according to the positioning result through the upper computer in the urban traffic education system.

An embodiment of the present application provides a terminal device, including a memory and a processor coupled to each other, where the processor is configured to execute program instructions stored in the memory, so as to implement the above-mentioned urban traffic education method.

Embodiments of the present application provide a computer-readable storage medium, on which program instructions are stored, and when the program instructions are executed by a processor, the above-mentioned urban traffic education method is implemented.

An embodiment of the present application provides a computer program, including computer-readable codes. When the computer-readable codes are run in a terminal device, a processor in the terminal device executes the method for implementing the above-mentioned urban traffic education.

The embodiments of the present application provide an urban traffic education system, method, device, storage medium, and computer program, wherein the urban traffic education system includes: a sand table; a plurality of three-dimensional models arranged on the sand table according to corresponding proportional relationships and positional relationships; A plurality of indicator lights on the sand table; wherein, the solid model and/or the indicator lights are configured to perform state transitions according to control instructions, thereby realizing urban traffic simulation. In this way, the urban traffic education system of the embodiment of the present application can simulate the real urban traffic situation in real time, achieve a vivid display effect, and can help the user to learn and understand the urban traffic planning scheme.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the drawings that are used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort. in:

1 is a schematic structural diagram of an embodiment of an urban traffic education system provided by an embodiment of the present application;

2 is a schematic structural diagram of a three-dimensional model of a sand table provided by an embodiment of the present application;

3 is a schematic structural diagram of a sand table plane model provided by an embodiment of the present application;

4 is a schematic structural diagram of a path visualization of a miniature smart vehicle provided by an embodiment of the present application;

5 is a schematic flowchart of an embodiment of an urban traffic education method provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of a framework of an embodiment of a terminal device provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a framework of an embodiment of a computer-readable storage medium provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In order to achieve rich teaching content in AI education, it is not enough to rely on the robot itself, and the cooperation of the venue is also required. However, traditional teaching venues often consist of static elements, printed on flat materials. The advantages of this kind of venue are simple production and low cost, but the disadvantage is also obvious, that is, the content is rigid, and it is not suitable for teaching tasks of various ability levels.

Based on this, the embodiments of the present application provide a 3D teaching site that can dynamically change teaching content. In addition to being used as a teaching tool, the teaching site can also provide a better platform for robot display, and can even support users and site elements. Interact to achieve a more vivid display effect.

In order to achieve the technical effect of creating a teaching site suitable for teaching tasks of various ability levels, the embodiment of the present application proposes an urban traffic education system, please refer to FIG. 1, which is the urban traffic education system provided by the embodiment of the present application A schematic structural diagram of an embodiment.

As shown in FIG. 1 , the urban traffic education system 100 of the embodiment of the present application includes a sand table 11 , a plurality of three-dimensional models 12 arranged on the sand table 11 according to corresponding proportional relationships and positional relationships, and a plurality of three-dimensional models 12 installed on the three-dimensional models 12 and all A plurality of indicator lights on the sand table 11 (not shown in the figure).

Among them, the sand table 11 in the embodiment of the present application is a sand table designed based on a variety of Chinese urban road traffic scenarios (for example, it may include 212 Chinese urban road traffic scenarios). Of course, it can also be designed based on urban road traffic scenarios in other countries. The embodiment does not limit this.

Wherein, the sand table 11 and the three-dimensional model 12 therein are miniaturized according to a certain ratio of the above-mentioned Chinese urban road traffic scene, for example, the miniaturization can be carried out according to the ratio of 1:10.

FIG. 2 is a schematic structural diagram of a three-dimensional model of a sand table provided by an embodiment of the present application, and FIG. 3 is a schematic structural diagram of a flat model of a sand table provided by an embodiment of the present application. As shown in the schematic structural diagrams of the sand table in FIG. 2 and FIG. The three-dimensional model 12 on the 11 mainly includes buildings, roads and traffic signs, etc., and the indicator lights on the sand table 11 include traffic lights and the like.

In some embodiments, the three-dimensional model 12 may also include wireless charging stations, traffic light intersections, overpasses, residential areas and other key urban traffic factors.

In some embodiments, other three-dimensional model 12 elements that may appear in various urban public transportation can also be set in the sand table 11 , and the user can customize and expand the composition elements of the sand table 11 according to requirements.

In some embodiments, as shown in FIG. 2 , both the three-dimensional model 12 and the sand table 11 of the embodiment of the present application are provided with a plurality of indicator lights (not shown in the figure). The indicator light represents the state of the three-dimensional model 12 (such as the current building) or the state of the current position of the sand table 11. For example, an alarm light is set above each building on the sand table 11. The alarm lights of different types of buildings represent different types of lights. In traffic incidents, the alarm light of the residential building lights up to indicate that there is a fire alarm signal, and the alarm light of the fire station lights up to indicate that the police need to be called.

For another example, the building in the embodiment of the present application may be a bus stop composed of a plurality of indicator lights, wherein the indicator lights may be LED lights. The performance logic of the bus station is: the number of indicator lights that make up the bus station represents the number of passengers waiting for the bus station; the indicator light is lit corresponding to the passengers waiting at the bus station, and the number of the indicator lights can be intuitive. Simulates the number of people waiting at the bus stop.

As shown in FIG. 1 , the urban traffic education system 100 of the embodiment of the present application further includes a positioning system 14 and a host computer 13 that are communicatively connected to the sand table 11 , and the positioning system 14 may be composed of one or more cameras (not shown in the figure). . The host computer 13 establishes a communication connection with the positioning system 14, wherein the host computer 13 can be a terminal device that is communicatively connected to the sand table, or a mobile terminal such as a smart phone, and the user can use the control software of the mobile terminal as the host computer. 13. Send a control command to the sand table 11 . The positioning system 14 shoots the real-time traffic image on the sand table 11 through the camera, and uploads the real-time traffic image to the host computer 13 . The host computer 13 collects real-time traffic images of the sand table 11 captured by multiple cameras from different angles, and creates a three-dimensional model of the sand table 11 based on the plurality of real-time traffic images from different angles. At the same time, the host computer 13 recognizes the position of the miniature smart car 15 in the sand table 11 in FIG. 2 from the real-time traffic image through the target recognition technology, and the traffic situation of the sand table 11, such as the direction of pedestrians, the number of pedestrians and the display of traffic lights. situation etc.

Alternatively, the positioning system 14 can also directly send the real-time traffic image to the miniature smart car 15, and the miniature smart car 15 can locate its own position according to the real-time traffic image, and carry out path planning according to the positioning result of its own position, so as to realize automatic driving .

Wherein, the upper computer 13 is further configured to control the state of the three-dimensional model 12 by means of serial communication according to the input instruction of the user, so as to reflect the traffic event. For example, the host computer 13 can control the alarm light on the residential building to light up, thereby reflecting the fire in the residential building and simulating the possible traffic hidden dangers in real urban traffic. The host computer 13 can transmit the configuration scheme to the three-dimensional model 12 through any suitable wireless communication technology. For example, the embodiment of this application adopts the Zigbee communication protocol, wherein the Zigbee communication protocol is a low-power local area network based on the IEEE802.15.4 standard. protocol, mainly used for short-range wireless connections.

Among them, the miniature smart car 15 is an intelligent robot, which is set in the traffic scene constructed by the sand table 11 , and is controlled by the host computer 13 through control instructions or preset trajectory paths, so as to run on the road of the sand table 11 .

In the practical application of the embodiment of the present application, the host computer 13 controls traffic signs, traffic lights and road gates through a PLC (Programmable Logic Controller) controller to simulate different traffic conditions. Among them, the miniature smart car 15 is remotely controlled by the host computer 13 to control its drive controller.

In the embodiment of the present application, the positioning system 14 is not only configured to acquire the overall traffic situation of the sand table 11 , but also configured to adjust the control instructions of the upper computer 13 based on the actual traffic situation of the sand table 11 , so that the miniature smart car 15 can move on the road. run more real. For example, the positioning system 14 also includes sensors disposed in the miniature smart car 15 or under the road of the sand table 11 . The sensors in the miniature smart car 15 are mainly used to assist the miniature smart car 15 to avoid pedestrians or obstacles on the road. The sensors in the miniature smart car 15 are generally ultrasonic obstacle avoidance sensors, single-line lidar sensors or infrared obstacle avoidance sensors. The sensors disposed under the road of the sand table 11 are generally gravity sensors.

The settings of the above sensors and cameras can fully collect road conditions. In this way, the verification and analysis of the intelligent traffic algorithm can be realized through the control of the upper computer 13 in accordance with the traffic conditions setting of the sand table 11 .

In some embodiments, as shown in FIG. 1 , the urban traffic education system 100 of the embodiment of the present application further includes a projection system 16 disposed above the sand table 11 , and the host computer 13 establishes a communication connection with the projection system 16 .

The projection system 16 can be composed of one or more projectors, and each projector can directly communicate with the host computer 13 wirelessly or by wire. In some applications, the host computer 13 constructs a three-dimensional model of the sand table 11 through the real-time traffic images uploaded by the positioning system 14, and simulates traffic in the three-dimensional model of the sand table 11 according to the user's input information, that is, the user's display effect or educational needs. element model. The host computer 13 sends the data of the simulated traffic element model to the projection system 16 , and then the projection system 16 projects the traffic event composed of the traffic element model on the sand table 11 . The traffic element model may be pedestrians and the like.

Therefore, the projection system 16 is responsible for the event visualization of the sand table 11 in the urban transportation education system 100, such as pedestrian crossing the road, fire effect, passenger destination, path visualization of the miniature smart car 15, and the like. 4 is a schematic structural diagram of the path visualization of the miniature smart car provided by the embodiment of the present application. Taking the path visualization of the miniature smart car 15 as an example, please refer to FIG. 4 , the miniature smart car 15 physically exists in the sand table 11 . The projection system 16 marks the current position of the miniature smart car 15 and the destination position of the miniature smart car 15 on the sand table according to the instructions of the host computer 13, and materializes a maximum line between the current position and the destination position of the miniature smart car 15. optimal trajectory. Through the visualization of the path of the miniature smart cars 15, the user can vividly observe how each miniature smart car 15 operates in the simulated traffic environment, thereby helping the user to learn and understand the urban traffic planning scheme.

The host computer 13 in the urban traffic education system 100 is based on the macro-simulation of traffic flow, the micro-simulation of vehicle behavior, and the configuration theory of signal lights, and is suitable for traffic system design in the fields of urban road planning and design, simulating urban traffic flow conditions and signal light settings, etc. and analysis. The host computer 13 may include the following functional modules: a module for creating a simulation file, a module for opening an existing simulation file, a module for comparing and analyzing simulation results, a module for drawing road sections, a module for adding road connection points, a module for adding vehicle sources, a module for drawing signal lights, and a module for adding detectors , drawing polygon module, drawing cross line module, setting simulation parameter module, setting signal timing attribute parameter module, vehicle micro state observer module, setting statistical index parameter module, simulation control module, 3D display module, simulation result data saving module, Twenty-three functional modules, such as vehicle and driver parameter module, simulation result statistical data display module, signal light timing scheme design module, signal timing module, digital processing module and data statistics, can be combined into various operation procedures. .

As shown in FIG. 1 , in the embodiment of the present application, the urban traffic education system 100 includes: a plurality of three-dimensional models 12 arranged on the sand table 11 according to the corresponding proportional relationship and positional relationship; A plurality of indicator lights; a positioning system 14 and a projection system 16 respectively located above the sand table 11; The urban traffic education system 100 of the embodiment of the present application can simulate real urban traffic conditions in real time, achieve a vivid display effect, and can help users learn and understand urban traffic planning schemes.

The urban traffic education system in the embodiment of the present application includes a positioning system, a projection system, a sand table, a miniature smart car, and the like. Among them, the sand table includes wireless charging stations, traffic light intersections, overpasses, residential areas, bus stops and other key urban traffic factors. In addition, a three-dimensional building is used to build a sand table, and all elements on the sand table communicate with the host computer through the serial port. In this way, (1) the real flow of the population can be simulated in real time, and different traffic effects can be achieved by using different strategies to help users understand urban traffic. 's planning scheme. (2) It can trigger different events according to different user needs to achieve the teaching purpose of different contents. (3) Strong scalability, as long as it conforms to the serial communication standard, the elements on the disk can be customized and expanded.

Please continue to refer to FIG. 5 . FIG. 5 is a schematic flowchart of an embodiment of an urban traffic education method provided by an embodiment of the present application. The urban traffic education method of the embodiment of the present application is applied to the above-mentioned urban traffic education system.

As shown in FIG. 5 , the urban traffic education method of the embodiment of the present application includes the following steps:

Step S51: Acquire a control instruction.

Among them, the control instruction can be directly input by the user through the host computer. It can also be that the positioning system locates the position of the three-dimensional model on the sand table and/or the position of the indicator light to obtain the positioning result, which is automatically generated by the host computer according to the positioning result.

Step S52: Perform state transition on the multiple three-dimensional models on the sand table based on the control instruction, and/or perform state transition on the indicator lights on the sand table based on the control instruction.

Please continue to refer to FIG. 6. FIG. 6 is a schematic diagram of a framework of an embodiment of a terminal device provided by an embodiment of the present application. The terminal device 60 includes a memory 61 and a processor 62 coupled to each other, and the processor 62 is configured to execute program instructions stored in the memory 61 to implement the steps in any of the above-mentioned embodiments of the urban traffic education method. In some implementation scenarios, the terminal device 60 may include, but is not limited to, a microcomputer and a server. In addition, the terminal device 60 may also include a mobile device such as a notebook computer and a tablet computer, which is not limited herein.

In some embodiments, the processor 62 is configured to control itself and the memory 61 to implement the steps in any of the above-mentioned embodiments of the urban traffic education method. The processor 62 may also be referred to as a CPU (Central Processing Unit, central processing unit). The processor 62 may be an integrated circuit chip with signal processing capability. The processor 62 can also be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. In addition, the processor 62 may be jointly implemented by an integrated circuit chip.

Please refer to FIG. 7 , which is a schematic diagram of a framework of an embodiment of a computer-readable storage medium provided by an embodiment of the present application. The computer-readable storage medium 70 stores program instructions 701 that can be executed by the processor, and the program instructions 701 are used to implement the steps in any of the foregoing embodiments of the urban traffic education method.

In some embodiments, the embodiments of the present application provide a computer program, including computer-readable code, when the computer-readable code is executed in a terminal device, the processor in the terminal device executes to implement the above method.

In some embodiments, the functions or modules included in the apparatus provided in the embodiments of the present application may be used to execute the methods described in the above method embodiments, and for implementation, reference may be made to the descriptions in the above method embodiments. Repeat.

The above descriptions of the various embodiments tend to emphasize the differences between the various embodiments, and the similarities or similarities can be referred to each other. For the sake of brevity, details are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the device implementations described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other divisions. For example, units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, which may be in electrical, mechanical or other forms.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that make contributions to the prior art, or all or part of the technical solutions, and the computer software products are stored in a storage The medium includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the methods of the embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes .

The above description is only an embodiment of the present application, and is not intended to limit the scope of the patent of the present application. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present application, or directly or indirectly applied to other related technologies Fields are similarly included within the scope of patent protection of this application.

Industrial Applicability

The embodiments of the present application provide an urban traffic education system, method, device, storage medium, and computer program. The urban traffic education system includes: a sand table; a model; a plurality of indicator lights installed on the sand table; wherein, the three-dimensional model and/or the indicator lights are configured to perform state transitions according to control instructions. The urban traffic education system provided according to the embodiments of the present application can simulate real urban traffic conditions in real time, achieve a vivid display effect, and further help users learn and understand urban traffic planning schemes.

Claims

An urban traffic education system, wherein the urban traffic education system includes:

sand table;

A plurality of three-dimensional models arranged on the sand table according to the corresponding proportional relationship and positional relationship;

a plurality of indicator lights installed on the sand table;

Wherein, the three-dimensional model and/or the indicator light are configured to perform state transformation according to a control instruction.
The urban transportation education system according to claim 1, wherein,

The urban traffic education system also includes:

a positioning system, configured to locate the position of the three-dimensional model on the sand table and/or the position of the indicator light to obtain a positioning result;

A host computer, which is connected in communication with the positioning system, and is configured to control the three-dimensional model and/or the indicator light according to the positioning result of the positioning system on the three-dimensional model and/or the indicator light Make state transitions.
The urban transportation education system according to claim 2, wherein,

The three-dimensional model includes buildings, roads, and traffic signs, and the indicator lights include traffic lights, wherein the state of the traffic lights is controlled by the host computer;

The building includes a bus stop, the bus stop includes LED lights, and the state of the LED lights in the bus stop is controlled by the host computer.
The urban traffic education system according to claim 3, wherein,

The sand table is also provided with a miniature smart car controlled by the host computer, and the miniature smart car runs on the road of the sand table based on the control instructions of the host computer.
The urban transportation education system according to claim 4, wherein,

The positioning system includes a camera arranged above the sand table, the camera is configured to shoot real-time traffic images on the sand table, and upload the real-time traffic images to the host computer; the host computer uses the target recognition technology Identifying the position of the miniature smart car in the sand table, planning the action path of the miniature smart car according to the position of the miniature smart car in the sand table, and controlling the miniature smart car;

Or, the camera is further configured to send the real-time traffic image to the miniature smart car, and the miniature smart car locates its own position according to the real-time traffic image, and performs path planning according to the positioning result of its own position, achieve autonomous driving.
The urban transportation education system according to claim 4, wherein,

The positioning system includes at least one of the following:

Ultrasonic obstacle avoidance sensor arranged in the miniature smart car, single-line lidar sensor arranged in the miniature smart car, infrared obstacle avoidance sensor arranged in the miniature smart car, gravity arranged under the road sensor.
The urban transportation education system according to claim 2, wherein,

The urban traffic education system further includes a projection system located above the sand table, the projection system includes a projector arranged above the sand table, and the projector is communicatively connected to the host computer;

The host computer constructs a three-dimensional model of the sand table through the real-time traffic images uploaded by the positioning system, and simulates a traffic element model in the three-dimensional model of the sand table; the host computer sends the traffic element model to the host computer. The projection system is used to project the traffic event composed of the traffic element model on the sand table through the projector.
The urban transportation education system according to claim 7, wherein,

The traffic element model includes pedestrians, the visualized path of the miniature smart car, and traffic police.
The urban transportation education system according to claim 2, wherein,

The sand table is provided with a serial port, and the host computer communicates with the serial port to update the state of the three-dimensional model in real time and/or customize and expand the elements on the sand table.
An urban traffic education method, wherein the urban traffic education method is applied to the urban traffic education system according to any one of the above claims 1 to 9, and the urban traffic education method comprises:

Get control instructions;

Based on the control instructions, state transitions are performed on a plurality of three-dimensional models on the sand table, and/or state transitions are performed on the indicator lights on the sand table based on the control instructions.
The urban traffic education method according to claim 10, wherein the urban traffic education method further comprises:

Obtain the positioning result obtained by positioning the position of the three-dimensional model on the sand table and/or the position of the indicator light by the positioning system in the urban traffic education system;

The control instruction is generated according to the positioning result through the upper computer in the urban traffic education system.
A terminal device, comprising a mutually coupled memory and a processor, the processor is configured to execute program instructions stored in the memory, so as to implement the urban traffic education method according to claim 10 or 11.
A computer-readable storage medium having program instructions stored thereon, wherein when the program instructions are executed by a processor, the urban traffic education method of claim 10 or 11 is implemented.
A computer program comprising computer readable codes, when the computer readable codes are executed in a terminal device, the processor in the terminal device executes the method for implementing the urban traffic education of claim 10 or 11.