Intelligent traffic light system based on V2X

Abstract

The utility model discloses an intelligent traffic light system based on V2X, the intelligent traffic light system comprises a cloud platform, traffic light equipment and a signal control box, the signal control box is in communication connection with the cloud platform through the Ethernet, the signal control box is in communication connection and power supply connection with the traffic light equipment through the Ethernet, and the cloud platform is used for generating display information. The traffic light device comprises a signal control box, the signal control box is used for controlling a display module in the traffic light device to display traffic lights according to the display information, the traffic light device further comprises a V2X function module, the V2X function module is in communication connection with the display module, and the V2X function module is used for obtaining real-time display information sent by the display module and sending the real-time display information to the signal control box. And the real-time display information is broadcasted. Through broadcasting the real-time display information by the V2X function module, the intelligent vehicle can conveniently obtain the real-time traffic light information, the convenience and the real-time performance are improved, and the traffic safety and the traffic efficiency of the intersection are further improved.

Description

Technical Field

[0001] The utility model belongs to the field of intelligent transportation technology, in particular to the field of intelligent transportation technology based on V2X technology, and specifically relates to an intelligent traffic light system based on V2X. Background Art

[0002] Traffic lights are traffic equipment that are found at most intersections in cities. The existing road traffic light system only has the function of displaying a single traffic light.

[0003] V2X (Vehicle to X) technology is a key technology in intelligent transportation systems. The core purpose of V2X-based information communication is to provide standardized safety services through broadcast messaging. V2X technology exists in various communication forms, including V2V (vehicle-to-vehicle), V2I (vehicle-to-infrastructure), V2P (vehicle-to-pedestrian), and V2C (vehicle-to-cloud). It enables communication between vehicles, between infrastructure, between pedestrians, and between vehicles and cloud platforms, providing real-time traffic information, including road conditions, road information, and pedestrian information.

[0004] V2X technology has been gradually applied in intelligent transportation, particularly in smart vehicles. However, existing traffic light systems are outdated and lack sufficient intelligence, making them unable to meet the growing demands of V2X connected vehicle scenarios.

[0005] Therefore, there is an urgent need to improve the current road traffic light system. Utility Model Content

[0006] In view of this, the purpose of the present invention is to overcome one or more deficiencies raised in the background art and provide a V2X-based intelligent traffic light system.

[0007] The purpose of this utility model is achieved through the following technical solutions:

[0008] A V2X-based intelligent traffic light system includes a cloud platform, traffic light equipment, and a signal control box. The signal control box is connected to the cloud platform via Ethernet communication, and the signal control box is connected to the traffic light equipment via Ethernet communication and power supply. The cloud platform is used to generate display information and transmit the display information to the signal control box. The signal control box is used to control the display module in the traffic light equipment to display traffic lights according to the display information. The traffic light equipment also includes a V2X functional module, which is communicatively connected to the display module and is used to obtain real-time display information sent by the display module and broadcast the real-time display information.

[0009] In a further improvement, the signal control box includes a first main control module and a first wireless communication module, the V2X function module includes a V2X control module, a V2X communication module, and a second wireless communication module, the V2X control module is connected to the V2X communication module, the second wireless communication module, and the display module respectively, the first main control module is connected to the cloud platform via Ethernet communication, the first main control module is connected to the display module via Ethernet communication and power supply, the first main control module is also connected to the first wireless communication module, and the first wireless communication module is communicatively connected to the second wireless communication module;

[0010] The first main control module is used to receive the display information sent by the cloud platform and control the display module to display the traffic light according to the display information, and is used to receive traffic auxiliary information sent by the cloud platform and send the traffic auxiliary information to the V2X control module via the first wireless communication module and the second wireless communication module;

[0011] The V2X control module is configured to receive the real-time display information and the traffic assistance information, and broadcast the real-time display information and the traffic assistance information via the V2X communication module;

[0012] The traffic auxiliary information includes one or more of maps, road traffic sign information and road traffic safety information.

[0013] Further improved, the V2X functional module further includes a satellite timing and positioning module and an encryption signature module, and the satellite timing and positioning module and the encryption signature module are respectively connected to the V2X control module;

[0014] The V2X control module is further configured to receive the location information of the traffic light device sent by the satellite timing and positioning module, and send the real-time display information, the traffic auxiliary information, and the location information to the encryption signature module;

[0015] The V2X communication module broadcasts the encrypted and signed real-time display information, the traffic assistance information, and the location information.

[0016] Further improved, the V2X control module and the V2X communication module are arranged in the same module, the model of the module is the CX7100 module, the model of the satellite timing and positioning module is the MC262M module, the model of the second wireless communication module is the FG650 module, and the model of the encryption signature module is the XDSM3276 chip.

[0017] Further improved, the display module includes a display control module and a traffic light. The display control module is connected to the first main control module via Ethernet communication and power supply. The display control module is connected to the traffic light and the V2X control module respectively. The display control module is located on a first main board body installed in a first shell. The traffic light is located outside the first shell and is physically connected to the first shell. The V2X control module, V2X communication module, satellite timing and positioning module, encryption signature module and second wireless communication module are all located on a second main board body installed in a second shell.

[0018] As a further improvement, the first shell and the second shell are both located in the first waterproof box body.

[0019] As a further improvement, the first wireless communication module and the second wireless communication module are both 5G communication modules.

[0020] The beneficial effects of the utility model are:

[0021] (1) By integrating the V2X functional module on the basis of traditional traffic light equipment, the traditional traffic light equipment is integrated with the V2X function. Through the broadcast of real-time display information by the V2X functional module, smart vehicles can easily obtain real-time traffic light information. Compared with monitoring traffic light information through a cloud platform and then transmitting the monitored traffic light information to smart vehicles, the convenience and real-time nature of obtaining traffic light information through traffic light equipment integrated with the V2X functional module are higher, thereby improving the traffic safety and traffic efficiency at the intersection; at the same time, it also lays a good foundation for the promotion of V2X technology. The corresponding V2I scenario can be used in the later stage. It can be seen that the intelligent traffic light system realized by the utility model is conducive to the transformation project of urban vehicle networking, so as to achieve the goal of zero traffic accidents and zero congestion at intersections;

[0022] (2) By adding a first wireless communication module to the traditional signal control box, the traffic auxiliary information sent by the cloud platform is transmitted to the V2X functional module, so that the V2X functional module can broadcast the traffic auxiliary information. At the same time, smart vehicles can easily obtain more complete traffic information, further improving the traffic safety and efficiency of the intersection;

[0023] (3) By setting up the encryption and signature module, the information broadcast by the V2X functional module is encrypted and signed, which improves the security of information broadcast;

[0024] (4) By setting up a satellite timing and positioning module, smart vehicles can obtain location information from traffic light devices in a more real-time manner than from cloud platforms. In addition, cloud platforms usually collect information on the real-time location of traffic lights at preset periodic intervals, so the accuracy of location information obtained by smart vehicles from traffic light devices is also higher.

[0025] (5) By isolating the V2X functional module and the display module on separate boards, mutual interference between signals is reduced, and the reliability of the intelligent traffic light system implemented by the utility model is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a block diagram of a V2X-based intelligent traffic light system.

[0027] Figure 2 This is a block diagram of the signal control box;

[0028] Figure 3 This is a block diagram of the components of a traffic light device. DETAILED DESCRIPTION

[0029] The following will be combined with the embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0030] See Figure 1-Figure 3 This embodiment provides a V2X-based intelligent traffic light system, including a cloud platform, signal control boxes located at different intersections, and traffic light devices connected one-to-one with the signal control boxes at each intersection. Figure 1Figure 2 shows the signal control boxes and traffic light equipment located at intersections 1, 2, and N. Specifically, the signal control boxes are connected to the cloud platform via Ethernet, and the signal control boxes are connected to the traffic light equipment via Ethernet and PoE power supply. The cloud platform is responsible for generating display information and transmitting it to the signal control boxes. The signal control boxes control the display modules within the traffic light equipment based on the display information, displaying the traffic lights. The display information includes the phase and cycle of the traffic lights. The traffic light equipment also includes a V2X functional module, which is in communication with the display module and is responsible for acquiring and broadcasting real-time display information sent by the display module. Specifically, in this embodiment, the cloud platform is a cloud platform within an intelligent transportation system. The cloud platform includes a server on which a traffic light display program is deployed. This traffic light display program is a publicly known traffic light display program and is not modified in this embodiment. Furthermore, the method by which the V2X functional module broadcasts real-time display information is based on a publicly known method for broadcasting information using V2X technology and is not modified in this embodiment.

[0031] Preferably, the display module includes a third power module (not shown), a display control module, and a traffic light. The display control module is connected to the traffic light, and the third power module is used to supply power to the display control module and the traffic light. The signal control box includes a first power module, a first main control module, and a first wireless communication module. The first main control module is connected to the cloud platform via Ethernet, and to the display control module via Ethernet and PoE power supply. The first main control module is also connected to the first wireless communication module. The first power module is used to connect to an external power supply and supply power to the first main control module and the first wireless communication module. The V2X function module includes a second power module (not shown), a V2X control module, a V2X communication module, and a second wireless communication module. The V2X control module is connected to the V2X communication module, the second wireless communication module, and the display control module, respectively. The second wireless communication module is in communication with the first wireless communication module. The second power module is used to supply power to the V2X control module, the V2X communication module, and the second wireless communication module. The second and third power modules preferably draw power from the same external power source. Specifically, the second power supply module can be powered by the POE power supply circuit between the first main control module and the display module, and the third power supply module can also be powered by the POE power supply circuit between the first main control module and the display module.

[0032] The first main control module is used to receive display information sent by the cloud platform and control the display control module based on the display information. The display control module controls the traffic light display. It is also used to receive traffic assistance information sent by the cloud platform and transmit it to the V2X control module via the first and second wireless communication modules. Traffic assistance information includes one or more of map information (MAP), road traffic sign information (RSI), and road traffic safety information (RSM).

[0033] The V2X control module is responsible for receiving real-time display information from the display control module and traffic assistance information transmitted from the second wireless communication module, and broadcasting this real-time display information and traffic assistance information via the V2X communication module. The V2X communication module's method for broadcasting real-time display information and traffic assistance information is based on publicly available V2X technology information broadcasting methods, and this embodiment does not improve upon these methods. Specifically, both the V2X control module and the V2X communication module utilize commercially available models.

[0034] As a preferred embodiment, the V2X functional module further includes a satellite timing and positioning module and an encryption and signature module. The satellite timing and positioning module and the encryption and signature module are respectively connected to the V2X control module.

[0035] The V2X control module is also used to receive the location information and timing information of the traffic light equipment sent by the satellite timing and positioning module, and send the above real-time display information, traffic assistance information and location information to the encryption signature module.

[0036] The V2X control module is further configured to perform local clock correction based on the timing information. The V2X control module performs local clock correction based on the timing information using the correction process described in conventional embodiments. For example, the V2X control module performs frequency correction on the local crystal oscillator based on the timing information. After frequency correction, the crystal oscillator's output clock is synchronized with the standard clock received from the satellite.

[0037] Compared with using the clock obtained from the upper-level circuit such as the display control module as the local reference clock of the V2X functional module, the reference clock obtained by the V2X functional module through the setting of the satellite timing and positioning module and the local time calibration of the V2X control module is more accurate, thereby improving the clock consistency when the intelligent traffic light system implemented based on this embodiment is transformed into the Internet of Vehicles.

[0038] The encryption and signature module performs security-level encryption and signature processing on the real-time display information, traffic assistance information, and location information, and transmits the encrypted and signed real-time display information, traffic assistance information, and location information back to the V2X control module. Specifically, the encryption and signature module uses a commercially available model.

[0039] The V2X communication module receives the encrypted and signed real-time display information, traffic assistance information and location information from the V2X control module and broadcasts it.

[0040] In this embodiment, both the first and second wireless communication modules utilize 5G communication modules, the model of which is the FG650 module. The V2X control module and the V2X communication module are housed in the same module, the model of which is the CX7100 module. After receiving the real-time display information and traffic assistance information, the V2X control module within the CX7100 module integrates these real-time display information and traffic assistance information into a SPAT message within the V2X standard message set, which is then broadcast via the V2X communication module within the CX7100 module. It is understood that the first wireless communication module, the second wireless communication module, the V2X control module, and the V2X communication module may also utilize other commercially available models.

[0041] In this embodiment, the satellite timing and positioning module adopts the MC262M module, and the encryption signature module adopts the XDSM3276 chip. It is known that the satellite timing and positioning module and the encryption signature module may also adopt other commercially available models.

[0042] Preferably, the third power module and display control module are located on the first mainboard, which is mounted within the first housing. The traffic light is located outside the first housing and physically connected to it. The second power module, V2X control module, V2X communication module, satellite timing and positioning module, encryption signature module, and second wireless communication module are all located on the second mainboard, which is mounted within the second housing. Furthermore, both the first and second housings are located within the first waterproof enclosure. It is understood that the radio frequency antennas contained within the V2X communication module, satellite timing and positioning module, and second wireless communication module all extend outside the first waterproof enclosure.

[0043] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A V2X-based intelligent traffic light system, comprising a cloud platform, traffic light equipment, and a signal control box, wherein the signal control box is connected to the cloud platform via Ethernet communication, and the signal control box is connected to the traffic light equipment via Ethernet communication and power supply. The cloud platform is used to generate display information and transmit the display information to the signal control box, and the signal control box is used to control the display module in the traffic light equipment to display traffic lights according to the display information. The system is characterized in that: The traffic light device also includes a V2X functional module, which is communicatively connected to the display module. The V2X functional module is used to obtain real-time display information sent by the display module and broadcast the real-time display information.

2. The V2X-based intelligent traffic light system according to claim 1, characterized in that: The signal control box includes a first main control module and a first wireless communication module. The V2X function module includes a V2X control module, a V2X communication module, and a second wireless communication module. The V2X control module is connected to the V2X communication module, the second wireless communication module, and the display module, respectively. The first main control module is connected to the cloud platform via Ethernet communication. The first main control module is connected to the display module via Ethernet communication and power supply. The first main control module is also connected to the first wireless communication module, and the first wireless communication module is communicatively connected to the second wireless communication module. The first main control module is used to receive the display information sent by the cloud platform and control the display module to display the traffic light according to the display information, and is used to receive traffic auxiliary information sent by the cloud platform and send the traffic auxiliary information to the V2X control module via the first wireless communication module and the second wireless communication module; The V2X control module is configured to receive the real-time display information and the traffic assistance information, and broadcast the real-time display information and the traffic assistance information via the V2X communication module; The traffic auxiliary information includes one or more of maps, road traffic sign information and road traffic safety information.

3. The V2X-based intelligent traffic light system according to claim 2, characterized in that: The V2X function module further includes a satellite timing and positioning module and an encryption signature module, which are respectively connected to the V2X control module; The V2X control module is further configured to receive the location information of the traffic light device sent by the satellite timing and positioning module, and send the real-time display information, the traffic auxiliary information, and the location information to the encryption signature module; The V2X communication module broadcasts the encrypted and signed real-time display information, the traffic assistance information, and the location information.

4. The V2X-based intelligent traffic light system according to claim 3, characterized in that: The V2X control module and the V2X communication module are set in the same module. The model used in this module is the CX7100 module. The model used in the satellite timing and positioning module is the MC262M module. The model used in the second wireless communication module is the FG650 module. The model used in the encryption signature module is the XDSM3276 chip.

5. The V2X-based intelligent traffic light system according to claim 3, characterized in that: The display module includes a display control module and a traffic light. The display control module is connected to the first main control module via Ethernet communication and power supply. The display control module is connected to the traffic light and the V2X control module respectively. The display control module is located on a first main board body installed in a first shell. The traffic light is located outside the first shell and is physically connected to the first shell. The V2X control module, V2X communication module, satellite timing and positioning module, encryption signature module and second wireless communication module are all located on a second main board body installed in a second shell.

6. The V2X-based intelligent traffic light system according to claim 5, characterized in that: The first shell and the second shell are both located in the first waterproof box body.

7. The V2X-based intelligent traffic light system according to claim 2, characterized in that: The first wireless communication module and the second wireless communication module are both 5G communication modules.

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