A traffic light system and hardware based on 4G networking

Abstract

This invention relates to the field of intelligent traffic control technology and discloses a traffic light system and hardware based on 4G networking, including a mini-program control terminal, a cloud server, a 4G communication interaction module, and a local main control execution module. The mini-program control terminal establishes a two-way communication connection with the cloud server through the mobile internet, providing users with a visual management interface, receiving control commands input by users and uploading them to the cloud server, and simultaneously receiving and displaying equipment operating status and alarm information issued by the cloud server. This traffic light system based on 4G networking achieves remote, contactless control of traffic lights through 4G communication and a WeChat mini-program, eliminating the need for manual on-site operation. Emergency control response time is reduced from minutes to seconds, significantly improving traffic control efficiency and reducing safety risks for on-site operators.

Description

Technical Field

[0001] This invention relates to the field of intelligent traffic control technology, specifically to a traffic light system and hardware based on 4G networking. Background Technology

[0002] Traffic lights are the core equipment for road traffic safety management. Most existing traffic lights, especially temporary red and green lights and emergency warning lights, are controlled by local manual controllers. Managers need to go to the equipment site to adjust the timing of the traffic lights and switch the operating mode. This results in slow emergency response, poor ease of operation, and an inability to quickly respond to sudden traffic congestion, accidents, and other scenarios.

[0003] Existing traffic light equipment with remote control capabilities mostly suffers from the following technical defects: First, they mostly use a single network port or wireless communication method, resulting in poor compatibility and a lack of redundant communication design. Once communication is interrupted, the equipment directly loses control, easily leading to traffic paralysis at intersections. Second, they are incompatible with various hardware configurations such as single-color warning lights, three-color vehicle lights, and pedestrian traffic lights, resulting in poor scene adaptability and failing to meet the control needs of various scenarios such as urban intersections, emergency sites, and tunnel highways. Third, they cannot achieve refined control of a single light or batch collaborative control of multiple devices, and their timing adjustment flexibility is poor, making them unable to adapt to differentiated traffic control needs. Fourth, they lack a sound fault self-diagnosis and emergency response mechanism, and equipment failures cannot be warned in a timely manner, easily leading to safety hazards of control failure.

[0004] Therefore, there is an urgent need for a 4G-connected traffic light system and hardware that can be remotely and precisely controlled, is compatible with hardware in multiple scenarios, and has a redundancy protection mechanism. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a traffic light system and hardware based on 4G networking, which solves the problems of inconvenient on-site operation, slow emergency response, easy paralysis due to communication interruption, and poor scene adaptability in existing technologies.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a traffic light system based on 4G networking, comprising a mini-program control terminal, a cloud server, a 4G communication interaction module, and a local main control execution module; The mini-program control terminal establishes a two-way communication connection with the cloud server via the mobile Internet, which is used to provide users with a visual management interface, receive control commands input by users and upload them to the cloud server, and at the same time receive and display the device operating status and alarm information issued by the cloud server. The cloud server is used to receive and forward control commands issued by the mini-program control terminal, store device operation data, user operation logs and basic device information, and at the same time realize user permission verification, command legality verification and alarm information push. The 4G communication interaction module is used to establish a bidirectional data transmission link between the cloud server and the local main control execution module, enabling the downlink transmission of control commands and the uplink transmission of device operating status data; The local main control execution module has a built-in embedded control program, which is used to parse the control commands sent from the cloud, execute the traffic light timing control logic, collect the operating status data of traffic lights and equipment, and trigger the system's preset redundancy protection and fault handling mechanisms.

[0007] Preferably, the 4G communication interaction module supports redundant communication with dual-carrier SIM cards and has a built-in GPS / BeiDou positioning submodule for obtaining the geographical location information of the corresponding control device. After uploading the location information to the cloud server, the corresponding control device is matched according to the intersection location on the map interface of the mini-program control terminal, so as to realize accurate matching and control of the device based on the geographical location.

[0008] Preferably, the mini-program control terminal is equipped with a mode selection and automatic operation module. The mode selection and automatic operation module allows users to select a single-color light control mode or a three-color light plus pedestrian light control mode according to the control scenario. After the mode is selected, the cloud server sends the preset traffic light timing algorithm of the corresponding mode to the local main control execution module. The local main control execution module automatically executes the cyclic alternation control of the traffic lights according to the timing algorithm to achieve unattended automatic operation.

[0009] Preferably, the mini-program control terminal is equipped with a single-lamp fine control module. The single-lamp fine control module allows users to independently control traffic lights in one or more directions, and customize the on-time, off-time, and flashing frequency parameters of the corresponding traffic lights. After the settings are completed, the control command is sent to the local main control execution module via the cloud server and the 4G communication interaction module. The local main control execution module updates the timing control logic in real time and drives the corresponding traffic lights to run according to the customized parameters.

[0010] Preferably, the mini-program control terminal is equipped with a batch collaborative management and control module. The batch collaborative management and control module supports users to select multiple target management and control devices in the same management and control area and simultaneously issue unified control commands, including synchronous adjustment of timing parameters, unified triggering of warning modes, and batch inspection of device status. The cloud server synchronously issues commands to the local main control execution module of all selected devices to realize collaborative management and control of multiple interfaces and multiple devices.

[0011] Preferably, the local main control execution module has a built-in offline redundancy management and control submodule. The offline redundancy management and control submodule monitors the network connection status in real time through the 4G communication interaction module. When the network interruption duration exceeds a preset threshold, it automatically switches to the local offline operation mode and continues to execute the traffic light control according to the last valid timing control command received. When the network is restored, it automatically synchronizes the device data during the offline operation to the cloud server and seamlessly switches back to the remote control mode. There is no change in the status of the traffic lights during the switching process.

[0012] Preferably, the cloud server and the mini-program control terminal are equipped with a user permission management module and an operation log management module. The user permission management module is divided into administrator permissions and ordinary operation permissions. Administrator permissions support device binding, parameter configuration, and user permission allocation, while ordinary operation permissions only support temporary timing adjustments, device status viewing, and alarm reporting. The operation log management module is used to record all users' operation instructions, operation time, operator information, and device status change data, and supports log backtracking, querying, and exporting.

[0013] Preferably, the local main control execution module has a built-in fault self-diagnosis and alarm linkage submodule, which is used to monitor the power supply status of the equipment, the on / off status of the drive circuit, and the 4G signal strength in real time. When a fault is detected, a fault alarm message is immediately generated and uploaded to the cloud server via the 4G communication interaction module. The cloud server then pushes the message to the mini-program control terminal and automatically triggers the preset fault emergency handling logic to ensure that the traffic light control is not interrupted.

[0014] A traffic light system hardware based on 4G networking includes an industrial-grade waterproof equipment housing, and a local main control circuit board, a 4G communication hardware module, a power control board, and a traffic light drive unit fixedly installed inside the equipment housing. The power output terminal of the power control board is electrically connected to the power supply terminals of the local main control circuit board, the 4G communication hardware module, and the traffic light drive unit, respectively, to provide working power to each hardware unit. The signal interaction terminal of the local main control circuit board is electrically connected to the 4G communication hardware module to realize the transmission of control commands and status data; the control output terminal of the local main control circuit board is electrically connected to the controlled terminal of the traffic light drive unit to output drive and control signals. The traffic light driver unit is equipped with multiple independent hardware driver interfaces. The driver interfaces extend to the outside of the device housing for electrical connection with external traffic light groups to realize hardware driver control of the traffic lights.

[0015] Preferably, the power control board adopts a replaceable modular design and is divided into two specifications: a power board for single-color lamps and a power board for tri-color lamps plus pedestrian lights. The power board for single-color lamps is equipped with 8 independent hardware driver output interfaces, each with a rated output current of 12V2A. The power board for tri-color lamps plus pedestrian lights is equipped with 36 independent hardware driver output interfaces, each with a rated output current of 12V2A. The equipment housing also contains a backup lithium iron phosphate battery pack, which is electrically connected to the power control board.

[0016] Compared with the prior art, the present invention provides a traffic light system and hardware based on 4G networking, which has the following beneficial effects: 1. This traffic light system based on 4G networking enables remote, contactless control of traffic lights via 4G communication and a WeChat mini-program. No manual on-site operation is required, and emergency response time is reduced from minutes to seconds, significantly improving traffic control efficiency and reducing safety risks for on-site operators. The power control board adopts a replaceable modular design, compatible with various hardware configurations such as single-color warning lights, three-color vehicle lights, and pedestrian traffic lights. It can be adapted to various control scenarios such as urban intersections, emergency construction, and tunnel highways, demonstrating strong versatility.

[0017] 2. This traffic light system based on 4G network adopts a four-fold protection mechanism of dual-carrier 4G redundant communication, seamless offline switching, and backup redundancy of drive circuit to solve the problem of equipment malfunction caused by communication interruption and power supply failure, and ensure uninterrupted traffic control at intersections.

[0018] 3. This traffic light system based on 4G network supports independent and refined control of a single light, with customizable on / off duration and flashing frequency. It also supports batch collaborative management of multiple devices, adapting to the differentiated management needs of different scenarios such as morning and evening peak hours and emergency response. The mini-program terminal does not require additional APP installation; the device is ready to use immediately after installation and can be registered online within 1 minute. It has built-in fault self-diagnosis and alarm push functions, significantly reducing the cost of device deployment and maintenance. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] A traffic light system and hardware based on 4G networking includes two parts: a 4G networked traffic light control system and traffic light hardware control equipment. The system and hardware work together to realize remote control and stable operation of traffic lights. The 4G networked traffic light control system includes a mini-program control terminal, a cloud server, a 4G communication unit, and a local main control unit, which form a four-layer closed-loop control architecture of "terminal-cloud-transmission-local".

[0021] Mini Program Control Terminal: Developed based on WeChat Mini Program, it does not require the installation of an additional APP. It provides users with a visual management interface and is the core carrier for users to issue control commands and view device status. Cloud server: Adopting a cloud-native architecture, it is used to receive control commands from the mini-program terminal, store device operation data, forward commands and synchronize data, and also supports user permission management, log storage and alarm push functions; 4G communication unit: It is the data transmission bridge between the cloud and local devices. It adopts a full-network compatible 4G network to realize the downlink transmission of control commands and the uplink transmission of device status data. Local main control unit: It adopts a 32-bit industrial-grade microcontroller with built-in embedded control program. It is the core control center of the equipment and is responsible for instruction parsing, timing control, data acquisition and protection mechanism triggering.

[0022] Traffic light hardware control equipment The traffic light hardware control equipment is an industrial-grade integrated control device, which is the hardware carrier for realizing traffic light management and control. It includes a power control board and a traffic light drive unit that are electrically connected to the local main control unit.

[0023] Power control board: The core of the equipment's power supply, available in two interchangeable configurations: one for single-color lights and the other for tri-color lights plus pedestrian lights. It provides multiple independent drive outputs and simultaneously provides input overvoltage, undervoltage, and short-circuit protection. Traffic light drive unit: It adopts a high-power MOSFET drive circuit, and each drive is independently controllable, so as to achieve precise control of the on / off state, duration and flashing frequency of the traffic lights.

[0024] A traffic light system based on 4G networking includes the following steps: Step 1: Equipment Deployment and System Initialization. Install the traffic light hardware control equipment at the target intersection, complete the wiring of the traffic light group and traffic light driver unit, and after the equipment is powered on, the local main control unit completes hardware self-test, 4G communication unit network registration, GPS / BeiDou positioning, and uploads the equipment location information and hardware configuration information to the cloud server to complete the equipment online registration; Step Two: User Permission Verification and Device Matching. Users complete account login and permission verification through the WeChat mini-program control terminal. The mini-program loads the corresponding list of manageable devices based on user permissions. At the same time, based on the geographical location information uploaded by the devices, it displays the traffic light devices at each intersection on the map interface. Users can accurately match the target device for control by location or device number. Step 3: Operating Mode Selection and Automatic Operation Configuration. Based on the target device's hardware configuration, the user selects either a single-color light mode or a three-color light mode in the mini-program. After selection, the cloud server sends the corresponding mode's preset timing algorithm to the local main control unit. The local main control unit, according to the timing algorithm, drives the corresponding traffic light group through the traffic light driver unit to complete the automatic cyclical alternation of red, yellow, and green lights. Step 4: Individual Light Fine-grained Manual Control. Users can customize the on / off duration, flashing frequency, and other parameters for red, green, and yellow traffic lights using the manual fine-grained control module in the mini-program, targeting one or more traffic lights in different directions. Once set, the control commands are sent from the cloud server and 4G communication unit to the local main control unit. The local main control unit updates the timing control logic in real time, driving the traffic lights to operate according to the customized parameters. Step 5: Batch Synchronous Management and Control of Multiple Devices. Users can select multiple traffic light devices in the same area through the batch management module of the mini-program and issue synchronous control commands, including timing synchronization adjustment, warning mode triggering, and device status inspection. The cloud server will synchronously issue the commands to all selected devices to achieve collaborative management and control of traffic lights at multiple intersections. Step Six: Offline Redundancy Protection During device operation, the 4G communication unit monitors the network connection status in real time. When the network interruption duration exceeds a preset threshold (default 5s), the local main control unit automatically switches to local offline operation mode and continues to control the signal lights according to the last received valid timing instructions. When the network is restored, the local main control unit automatically synchronizes the device data during offline operation to the cloud server and seamlessly switches back to remote control mode. There is no change in the signal light status during the switching process. Step 7: Equipment Fault Self-Diagnosis and Emergency Handling. The fault self-diagnosis module of the local main control unit monitors the equipment's power supply voltage, drive circuit continuity, and 4G signal strength in real time. When a fault is detected, it immediately generates a fault alarm message, uploads it to the cloud server via the 4G communication unit, and pushes it to the mini-program control terminal to remind the management personnel. At the same time, in the case of a drive circuit open circuit fault, it automatically switches to the backup drive circuit to ensure the continuous normal operation of the signal lights. Step 8: Operation log recording and data backtracking.

[0025] During system operation, the cloud server records in real time all control commands, operation times, operator information, equipment operating status data, and fault alarm information issued by users through the mini-program, generating complete operation logs and running logs. This allows administrators to trace, query, and export logs through the mini-program, enabling full-process traceability management.

[0026] Example 1: Routine Management Scenario of Three-Color Traffic Signals at Urban Intersections This embodiment addresses the routine traffic management needs of main roads, branch roads, and pedestrian crossings at regular urban intersections, and adopts the 4G-connected traffic light system and hardware equipment of this invention.

[0027] The traffic light hardware control equipment uses a dedicated 36-port power control board for tri-color lights and pedestrian lights, equipped with a dual-carrier full-network compatible 4G communication unit and an STM32F103 local main control unit; the signal light drive unit connects to 4 sets of tri-color traffic lights for motor vehicles in the east-west and north-south directions, and 2 sets of dual-color traffic lights for pedestrians in the east-west and north-south directions, occupying a total of 32 drive interfaces, with 4 spare drive interfaces reserved; the equipment is installed in the intersection signal control cabinet and connected to municipal AC220V mains power.

[0028] The mini-program control terminal assigns administrator permissions to traffic police brigade management personnel, supporting device binding, parameter configuration, permission allocation, and log querying; it assigns ordinary operation permissions to traffic police officers on duty at intersections, supporting only temporary timing adjustments, status viewing, and alarm reporting; it presets default timing algorithms for four time periods at level intersections: morning peak, off-peak, evening peak, and nighttime. During the morning peak (7:00-9:00), the green light duration for main roads is 60 seconds, followed by a yellow light of 3 seconds, while the green light duration for side roads is 20 seconds, followed by a yellow light of 3 seconds; during the off-peak (9:00-17:00), the green light duration for main roads is 40 seconds, followed by a yellow light of 3 seconds, while the green light duration for side roads is 30 seconds, followed by a yellow light of 3 seconds; during the evening peak (17:00-19:00), the green light duration for main roads is 55 seconds, followed by a yellow light of 3 seconds, while the green light duration for side roads is 25 seconds, followed by a yellow light of 3 seconds; and at night (19:00-7:00 the next day), a yellow flashing warning mode is activated with a flashing frequency of 0.5Hz.

[0029] After the device is installed and powered on, the local main control unit completes hardware self-test, 4G network registration, and GPS positioning within 30 seconds, and uploads the device location and hardware configuration information to the cloud server to complete the online registration. The traffic police brigade administrator can complete the device binding and parameter configuration through the mini-program. The equipment operates automatically according to a preset time-segmented timing algorithm, automatically switching the traffic light sequence based on time, without the need for manual on-site intervention, thus achieving routine unmanned control of intersections; During the morning rush hour, if a sudden traffic jam occurs on the main road, the traffic police on duty can manually extend the green light duration of the main road to 80 seconds and shorten the green light duration of the side road to 15 seconds through a mobile app. The instructions are sent to the local main control unit in real time via the cloud server and 4G communication unit. The equipment immediately updates the timing logic and completes the control adjustment within 10 seconds to quickly alleviate traffic congestion at the intersection. If a single operator's network experiences fluctuations or interruptions, the device will automatically switch to another operator's network. If both networks are interrupted for more than 5 seconds, it will automatically switch to offline operation mode and continue operating according to the current time sequence. After the network is restored, the operating data will be automatically synchronized. There will be no traffic light changes or intersection control interruptions during the switching process. The system records all operation commands, equipment operation data, and fault alarm information throughout the entire process. Administrators can review and query the data at any time through the mini-program, achieving full-process traceability management.

[0030] This embodiment realizes remote intelligent control of traffic lights at urban intersections, eliminating the need for manual on-site timing adjustments, improving congestion emergency response efficiency by over 90%, and achieving a 99.9% stable operation rate throughout the year, significantly enhancing the efficiency and intelligence of traffic control at urban intersections.

[0031] Example 2: Emergency Control Scenario for Monochrome Warning Lights at Road Construction / Traffic Accident Scenes This embodiment addresses the temporary emergency traffic control needs at urban road construction and traffic accident sites by employing a portable 4G-based traffic light system and hardware device.

[0032] The portable traffic light hardware control device uses a dedicated 8-port power control board for monochrome lights, and is equipped with a full-network 4G communication unit and an STM32F103 local main control unit. The signal light drive unit connects 4 sets of red monochrome warning lights and 4 sets of yellow monochrome warning lights, which are integrated on two portable and movable light stands. The overall weight of the device is less than 8kg, and it supports hand-carrying and vehicle-mounted transportation for rapid deployment.

[0033] The mini-program control terminal grants temporary operation permissions to traffic police and construction management personnel on-site, and presets three operating modes: construction warning, accident control, and slow-moving guidance. The construction warning mode is a two-way alternating yellow flashing light with a flashing frequency of 1Hz. The accident control mode is a red light that keeps on for oncoming vehicles and a green light that allows vehicles to pass for the handling direction. The slow-moving guidance mode is a slow yellow flashing light with a frequency of 0.2Hz, guiding vehicles to slow down and pass.

[0034] After a road traffic accident occurs, the traffic police arrive at the scene and deploy two sets of portable devices at both ends of the accident scene in the direction of oncoming traffic. After powering on, the devices complete self-check, 4G network connection, and GPS positioning within 1 minute, and automatically connect to the cloud server to complete online registration. Traffic police can use a mobile app to select the accident control mode according to the needs of on-site handling, and issue control commands with one click. The device will immediately start and the red light in the direction of oncoming traffic will remain on, prohibiting vehicles from entering the accident scene, ensuring the personal safety of on-site personnel. There is no need to manually set up the controller on-site, which greatly shortens the emergency response preparation time. During on-site handling, traffic police can switch operating modes in real time through the mini-program. When it is necessary to release vehicles in one direction, they can switch to the slow-moving guidance mode with one click to guide vehicles to pass slowly and orderly without having to go back and forth to the equipment site for adjustments. After the on-site handling was completed, the traffic police issued a stop command with one click through the mini-program. The equipment stopped the traffic lights and the scene was cleared. All operations were recorded simultaneously to the cloud server and can be reviewed.

[0035] This embodiment enables rapid deployment and remote control of temporary traffic control scenarios. The time from equipment deployment to use is reduced to less than 2 minutes, eliminating the need for on-site manual operation, which greatly improves the efficiency and safety of road emergency response and reduces the safety risks for on-site control personnel.

[0036] Example 3: Congestion warning and control scenario for lane traffic lights in highway tunnels / long downhill sections This embodiment addresses the needs for lane congestion and accident early warning and control in highway tunnels and long downhill sections. It adopts the 4G-connected traffic light system and hardware equipment of this invention to achieve lane-level remote automatic control and accident early warning.

[0037] One traffic light hardware control device is deployed every 500 meters along the tunnel / long downhill section. Each device uses a dedicated 16-port power control board for three-color lights, and is equipped with dual-carrier 4G communication units and an STM32F103 local main control unit. Each device connects to the red and green dual-color lane traffic lights of the corresponding three lanes of the road section to achieve lane-level release / restriction control. The hardware of this system reserves relevant equipment connection interfaces, switch interfaces and other standard expansion interfaces. Buyers can add and adapt corresponding products based on our equipment, for example: External millimeter-wave traffic flow detection radar The radar connects to the local main control module via an RS485 interface and can be connected to a third-party platform via a corresponding interface to collect real-time data on traffic flow, average vehicle speed, and headway. The local main control unit can adjust the signal light duration based on the real-time traffic flow data collected by the third-party platform, achieving adaptive traffic flow control and preventing congestion caused by tidal traffic flow.

[0038] External visibility and road condition sensors The sensor is connected to the device via an RS232 interface to monitor visibility, road surface water, and icing conditions in the tunnel in real time. The data is collected through a third-party platform and fed back to the local main control unit. When the system detects that the visibility is below the threshold or the road surface is wet and icy, it automatically triggers a high-frequency yellow flashing warning mode and pushes a road condition alarm to the mini-program terminal to guide vehicles to slow down in advance.

[0039] External emergency call alarm button Emergency call buttons are installed at key locations along the road and connected to the local main control module via a switch interface. In the event of a traffic accident or vehicle malfunction, when the driver or passenger presses the button, the system immediately triggers a full red traffic light closure for the corresponding road segment and sends an emergency alarm to the control personnel's mini-program, enabling rapid emergency response.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 4G networking based traffic light system characterized by: Includes a mini-program control terminal, a cloud server, a 4G communication interaction module, and a local main control execution module; The mini-program control terminal establishes a two-way communication connection with the cloud server via the mobile Internet, which is used to provide users with a visual management interface, receive control commands input by users and upload them to the cloud server, and at the same time receive and display the device operating status and alarm information issued by the cloud server. The cloud server is used to receive and forward control commands issued by the mini-program control terminal, store device operation data, user operation logs and basic device information, and at the same time realize user permission verification, command legality verification and alarm information push. The 4G communication interaction module is used to establish a bidirectional data transmission link between the cloud server and the local main control execution module, enabling the downlink transmission of control commands and the uplink transmission of device operating status data. The local main control execution module has a built-in embedded control program, which is used to parse the control commands sent from the cloud, execute the traffic light timing control logic, collect the operating status data of traffic lights and equipment, and trigger the system's preset redundancy protection and fault handling mechanisms.

2. The traffic light system based on 4G networking according to claim 1, characterized in that: The 4G communication interaction module supports redundant communication with dual-carrier SIM cards and has a built-in GPS / BeiDou positioning sub-module for obtaining the geographical location information of the corresponding control devices. After uploading the location information to the cloud server, the corresponding control devices are matched according to the intersection location on the map interface of the mini-program control terminal, realizing accurate matching and control of devices based on geographical location.

3. The traffic light system based on 4G networking according to claim 1, characterized in that: The mini-program control terminal is equipped with a mode selection and automatic operation module. The mode selection and automatic operation module allows users to select either a single-color light control mode or a three-color light plus pedestrian light control mode according to the control scenario. After the mode is selected, the cloud server sends the preset traffic light timing algorithm for the corresponding mode to the local main control execution module. The local main control execution module automatically executes the cyclical alternation control of the traffic lights according to the timing algorithm to achieve unattended automatic operation.

4. The traffic light system based on 4G networking according to claim 1, characterized in that: The mini-program control terminal is equipped with a single-lamp fine control module, which allows users to independently control traffic lights in one or more directions. Users can customize the on-time, off-time, and flashing frequency parameters of the corresponding traffic lights. After the settings are completed, the control commands are sent to the local main control execution module via the cloud server and the 4G communication interaction module. The local main control execution module updates the timing control logic in real time and drives the corresponding traffic lights to run according to the customized parameters.

5. The traffic light system based on 4G networking according to claim 1, characterized in that: The mini-program control terminal is equipped with a batch collaborative management and control module. This module allows users to select multiple target management and control devices within the same management and control area and simultaneously issue unified control commands, including synchronous adjustment of timing parameters, unified triggering of warning modes, and batch inspection of device status. The cloud server synchronously issues commands to the local main control execution modules of all selected devices, thereby achieving collaborative management and control of multiple interfaces and multiple devices.

6. The traffic light system based on 4G networking according to claim 1, characterized in that: The local main control execution module has a built-in offline redundancy management and control submodule. The offline redundancy management and control submodule monitors the network connection status in real time through the 4G communication interaction module. When the network interruption duration exceeds a preset threshold, it automatically switches to the local offline operation mode and continues to execute the traffic light control according to the last valid timing control command received. When the network is restored, it automatically synchronizes the device data during the offline operation to the cloud server and seamlessly switches back to the remote control mode. There is no change in the status of the traffic lights during the switching process.

7. The traffic light system based on 4G networking according to claim 1, characterized in that: The cloud server and the mini-program control terminal are equipped with a user permission management module and an operation log management module. The user permission management module is divided into administrator permissions and ordinary operation permissions. Administrator permissions support device binding, parameter configuration, and user permission allocation, while ordinary operation permissions only support temporary timing adjustment, device status viewing, and alarm reporting. The operation log management module is used to record all user operation instructions, operation time, operator information and equipment status change data, and supports log backtracking, querying and exporting.

8. A traffic light system based on 4G networking according to claim 1, characterized in that: The local main control execution module has a built-in fault self-diagnosis and alarm linkage sub-module, which is used to monitor the power supply status of the equipment, the on / off status of the drive circuit, and the 4G signal strength in real time. When a fault is detected, a fault alarm message is immediately generated and uploaded to the cloud server via the 4G communication interaction module. The cloud server then pushes the message to the mini-program control terminal and automatically triggers the preset fault emergency handling logic to ensure that the traffic light control is not interrupted.

9. A 4G networking based traffic light system hardware, characterized in that: It includes an industrial-grade waterproof equipment housing, as well as a local main control circuit board, a 4G communication hardware module, a power control board, and a signal light driver unit that are fixedly installed inside the equipment housing. The power output terminal of the power control board is electrically connected to the power supply terminals of the local main control circuit board, the 4G communication hardware module, and the traffic light drive unit, respectively, to provide working power to each hardware unit. The signal interaction terminal of the local main control circuit board is electrically connected to the 4G communication hardware module to realize the transmission of control commands and status data; the control output terminal of the local main control circuit board is electrically connected to the controlled terminal of the traffic light drive unit to output drive and control signals. The traffic light driver unit is equipped with multiple independent hardware driver interfaces. The driver interfaces extend to the outside of the device housing for electrical connection with external traffic light groups to realize hardware driver control of the traffic lights.

10. The 4G networking-based traffic light system hardware of claim 9, wherein: The power control board adopts a replaceable modular design and is available in two specifications: a power board for single-color lamps and a power board for tri-color lamps plus pedestrian lights. The power board for single-color lamps has 8 independent hardware driver output interfaces, each with a rated output current of 12V2A. The power board for tri-color lamps plus pedestrian lights has 36 independent hardware driver output interfaces, each with a rated output current of 12V2A.