Self-checking method, system and device for operating state of traffic light

Abstract

Disclosed in the embodiments of the present application are a self-checking method, system and device for the operating state of a traffic light. The method comprises: a traffic signal control machine generating a signal light control instruction and sending same to a roadside subsystem in each roadside self-checking system; display subsystems receiving, by means of built-in light bank controllers, the signal light control instruction that is forwarded by light-side subsystems and is from the roadside subsystem, so as to drive, on the basis of the signal light control instruction, state changes in LED light banks provided on the display subsystems, and to generate circuit state information of the LED light banks; the light-side subsystems checking the circuit state information of the LED light banks and performing stratification analysis to obtain operating state information of the LED light banks; and the roadside subsystem receiving the operating state information of the LED light banks on the basis of a preset power carrier technique, so as to process the operating state information to obtain operating state processing information, and sending the operating state processing information to a third-party system on the basis of a preset external data interface module.

Description

Traffic light operating status self-check method, system and device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 20, 2023, with application number 202311210810.5 and invention name “A method, system and device for self-inspection of the operating status of a traffic light”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of intelligent transportation technology, and in particular to a method, system, and device for self-checking the operating status of a traffic light. Background Art

[0003] With the development of urban road traffic, people's demand for smooth travel is increasing. Traffic lights are at the forefront of road traffic control systems. Their normal working condition directly affects the smooth flow of traffic and, in serious cases, can even cause traffic accidents. Therefore, monitoring the working condition of traffic lights is crucial.

[0004] Monitoring the operating status of traffic lights requires both monitoring the light status and real-time fault detection. However, existing light status monitoring methods generally rely on image recognition, including circular shape feature extraction and color distribution feature detection. However, image-based light status recognition methods are affected by weather factors such as lighting, and the computational cost of image analysis is high. Furthermore, existing traditional traffic lights lack networking capabilities, making it impossible to automatically collect and upload fault information, and thus unable to support intelligent and automated operation and maintenance of traffic lights, resulting in high operation and maintenance costs. Furthermore, traditional red, yellow, and green traffic lights require at least four separate power supply lines, which are both expensive in terms of both cable costs and construction costs. Adding dedicated network cables for signal light data transmission would not only increase the cable requirements of traditional traffic lights, but also complicate the wiring at the intersection, increasing the construction and maintenance costs of integrating the intersection's traffic information system.

[0005] Summary of the Invention

[0006] In order to solve the above technical problems, one or more embodiments of the present application provide a method, system and device for self-checking the operating status of a traffic light.

[0007] One or more embodiments of the present application adopt the following technical solutions:

[0008] One or more embodiments of the present application provide a traffic light operating status self-inspection method, which is applied to a status self-inspection system consisting of a traffic signal controller and multiple roadside self-inspection systems connected to the traffic signal controller; the roadside self-inspection system includes: a roadside subsystem, multiple light-side subsystems connected to the roadside subsystem, and display subsystems corresponding to the light-side subsystems; the method includes:

[0009] The traffic signal controller generates a signal light control instruction and sends it to the roadside subsystems in each roadside self-check system;

[0010] The display subsystem receives, via a built-in light group controller, a signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on a preset power carrier technology, drives the state change of the LED light groups provided on the display subsystem based on the signal light control instruction, and generates circuit state information of each of the LED light groups;

[0011] The lamp-side subsystem detects circuit status information of each LED lamp group and performs hierarchical analysis on the circuit status information to obtain operating status information of the LED lamp group; wherein the operating status information includes: lamp status information and fault information;

[0012] The roadside subsystem receives the operating status information of the LED lamp group based on the preset power carrier technology, processes the operating status information to obtain operating status processing information, and sends the operating status processing information to a third-party system based on a preset external data interface module.

[0013] Optionally, in one or more embodiments of the present application, the signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on the preset power line carrier technology specifically includes:

[0014] The roadside subsystem obtains the signal light control instruction sent by the traffic signal controller according to the signal light phase plate light control connection port preset on the external data interface module;

[0015] The roadside subsystem, based on a built-in roadside carrier communication module, sends the signal light control instruction to the built-in lamp-side carrier communication modules of the plurality of lamp-side subsystems corresponding to the roadside subsystem based on a preset power carrier technology; wherein the lamp-side carrier communication module is connected to the roadside carrier communication module based on a power supply line;

[0016] The display subsystem receives the signal light control instruction sent by the built-in lamp side carrier communication module of the lamp side system based on the preset power carrier technology according to the built-in lamp group controller; wherein, the lamp side carrier communication module is connected to the lamp group controller based on the power supply line.

[0017] Optionally, in one or more embodiments of the present application, before the roadside subsystem sends the signal light control instruction based on a preset power line carrier technology to the built-in light-side carrier communication modules of the plurality of light-side subsystems corresponding to the roadside subsystem based on the built-in roadside carrier communication module, the method further includes:

[0018] The lamp-side carrier communication module monitors the road-side carrier communication module and transmits a handshake signal based on the power supply line;

[0019] If the lamp-side carrier communication module receives the handshake signal from the road-side carrier communication module, it sends the identification code of the lamp-side carrier communication module to the road-side carrier communication module to establish a communication network between the lamp-side carrier communication module and the road-side carrier communication module.

[0020] Optionally, in one or more embodiments of the present application, the lamp-side subsystem detects circuit status information of each LED lamp group and performs hierarchical analysis on the circuit status information to obtain the operating status information of the LED lamp group, specifically including:

[0021] The built-in current and voltage detection circuit module of the lamp-side subsystem collects circuit status information of each lamp panel in the LED lamp group based on a preset time interval; wherein the circuit status information includes: voltage value and current value;

[0022] The current and voltage detection circuit module inputs the circuit state information into the connected lamp state analysis module and the fault analysis module respectively;

[0023] Determine the light state information corresponding to the circuit state information based on the light state analysis module;

[0024] Determining fault information corresponding to the circuit state information based on the fault analysis module;

[0025] The lamp-side carrier communication module receives the lamp status information and the fault information to obtain the operating status information of the LED lamp group.

[0026] Optionally, in one or more embodiments of the present application, determining the light state information corresponding to the circuit state information based on the light state analysis module specifically includes:

[0027] The light state analysis module receives the voltage value and the current value in the circuit state information;

[0028] The lamp state analysis module discriminates the circuit state information based on a preset first voltage threshold and a preset first current threshold, and determines the lamp state corresponding to the circuit state information; wherein the lamp state corresponding to the circuit state information includes: an on state and an off state;

[0029] The step of judging the circuit state information based on a preset first voltage threshold and a preset first current threshold to determine the light state corresponding to the circuit state information specifically includes:

[0030] If the light state analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is greater than the preset first current threshold, it determines that the corresponding signal light in the LED light group is in the on state; wherein, the preset first voltage threshold is less than or equal to the lower limit of the rated operating voltage, and the preset first current threshold is less than or equal to the lower limit of the rated operating current.

[0031] If the light state analysis module determines that the voltage value is less than or equal to the preset first voltage threshold or the current value is less than or equal to the preset first current threshold, it determines that the corresponding signal light in the LED light group is in the off state.

[0032] Optionally, in one or more embodiments of the present application, determining the fault information corresponding to the circuit state information based on the fault analysis module specifically includes:

[0033] If the fault analysis module determines that the voltage value is less than a preset second voltage threshold and the current value is greater than a preset second current threshold, then the corresponding signal light panel in the LED light group is determined to be in a short circuit fault state; wherein the preset second voltage threshold is a minimum voltage value of the signal light panel, and the preset second current threshold is greater than an upper limit of a rated operating current;

[0034] If the fault analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is less than a preset third current threshold, then the corresponding signal light panel in the LED light group is determined to be in an open circuit fault state; wherein the preset third current threshold is a minimum current value of the signal light panel;

[0035] If the fault analysis module determines that the voltage value is less than the preset first voltage threshold and the voltage value is greater than the preset second voltage threshold, or the current value is less than the preset third current threshold and the preset first current threshold, it determines that the corresponding signal light panel in the LED light group is in an undervoltage fault state.

[0036] Optionally, in one or more embodiments of the present application, processing the operating status information to obtain operating status processing information, and sending the operating status processing information to a third-party system based on a preset external data interface module, specifically includes:

[0037] The roadside data processing module in the roadside subsystem obtains the operating status information received by the roadside carrier communication module built into the roadside subsystem to determine whether there is a signal light panel fault state in the operating status information;

[0038] If so, the roadside data processing module obtains the signal light panel number corresponding to the fault state of the signal light panel, and obtains the continuous operation status information uploaded by the roadside carrier communication module within a preset period;

[0039] The roadside data processing module determines the historical operating status information of the roadside carrier communication module based on the signal light panel number, and extracts the historical operating status information based on the type of the signal light panel fault state to determine the number of faults corresponding to the signal light panel number;

[0040] If the roadside data processing module determines that the number of faults is greater than a preset fault number threshold, it calls the external data interface module and sends the fault information and the light status information to a third-party system based on the preset communication method of the external data interface module.

[0041] Optionally, in one or more embodiments of the present application, before the display subsystem receives, through the built-in light group controller, the signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on the preset power line carrier technology, the method further includes:

[0042] The built-in transformer module of the lamp-side subsystem converts the strong electricity of the power supply line into a corresponding weak voltage according to the operating voltage requirements of each module in the lamp-side subsystem, so as to start each module in the lamp-side subsystem based on the weak voltage.

[0043] One or more embodiments of the present application provide a traffic signal light operating status self-checking system, comprising a traffic signal controller and a plurality of roadside self-checking systems connected to the traffic signal controller; the roadside self-checking system comprising: a roadside subsystem, a plurality of light-side subsystems connected to the roadside subsystem, and a display subsystem corresponding to the light-side subsystems;

[0044] The traffic signal controller is used to generate a signal light control instruction and send it to each roadside subsystem in the roadside self-inspection system;

[0045] The display subsystem is configured to receive, via a built-in light group controller, a signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on a preset power carrier technology, drive a state change of an LED light group provided on the display subsystem based on the signal light control instruction, and generate circuit state information of each LED light group;

[0046] The lamp-side subsystem is used to detect the circuit status information of each LED lamp group and perform hierarchical analysis on the circuit status information to obtain the operating status information of the LED lamp group; wherein the operating status information includes: lamp status information and fault information;

[0047] The roadside subsystem is used to receive the operating status information of the LED lamp group based on the preset power carrier technology, process the operating status information to obtain operating status processing information, and send the operating status processing information to a third-party system based on a preset external data interface module.

[0048] One or more embodiments of the present application provide a traffic light operation status self-test device, the device comprising:

[0049] at least one processor; and,

[0050] a memory communicatively coupled to the at least one processor;

[0051] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any of the above-mentioned methods.

[0052] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0053] By using power carriers to transmit commands between the display subsystem, the light-side subsystem, and the roadside subsystem, the display subsystem's LED light clusters can be controlled directly from the power supply line. This avoids the traditional one-light-per-wire approach of traffic lights. When a traffic signal controller independently controls each light, at least four separate power supply lines are required for the red, yellow, and green lights, creating a high demand for cables. The light-side subsystem performs hierarchical analysis of circuit status information, enabling dynamic and accurate detection of LED light cluster operation. This improves problem detection efficiency and avoids the high labor and maintenance costs associated with on-site monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments described in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In the drawings:

[0055] FIG1 is a flow chart of a method for self-checking the operating status of a traffic light provided in an embodiment of the present application;

[0056] FIG2 is a schematic diagram of the structure of a traffic light operation status self-checking system provided by an embodiment of the present application;

[0057] FIG3 is a schematic structural diagram of a traffic light operation status self-checking device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] Embodiments of the present application provide a method, system, and device for self-checking the operating status of a traffic light.

[0059] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0060] Intelligent transportation systems are currently one of the key approaches to alleviating traffic problems. Intelligent traffic signal control is a crucial tool for traffic management within these systems. By rationally formulating signal timing strategies and allocating road rights based on traffic flow status in both temporal and spatial dimensions, traffic conflicts can be avoided, intersection efficiency can be improved, and driving safety can be ensured. Traffic lights are crucial for urban traffic signal control and are the primary means of providing real-time traffic control information to road users. Therefore, the operating and fault status of traffic lights have a significant impact on traffic order and safety. To address the lack of networking capabilities in traditional traffic lights, which makes it difficult to automatically collect and upload fault information, traffic signal maintenance is typically performed through on-site inspections or video inspections. This can lead to inaccurate problem location and excessive cable and installation costs when additional network cables are used for transmission.

[0061] To solve the above-mentioned technical problems, an embodiment of the present application provides a method for self-checking the operating status of a traffic light as shown in FIG1 , which is applied to a status self-checking system composed of a traffic signal controller and multiple roadside self-checking systems connected to the traffic signal controller as shown in FIG2 . The roadside self-checking system includes: a roadside subsystem, multiple light-side subsystems connected to the roadside subsystem, and a display subsystem corresponding to the light-side subsystem. The operating status self-checking method provided in the embodiment of the present application can have a fault self-diagnosis function. Based on the light-side subsystem, the circuit status information of each LED light group in the display subsystem is detected, and the circuit status information is hierarchically analyzed to obtain the operating status information of the LED light group. Dynamic and accurate detection of equipment operation is achieved, and the efficiency of problem discovery is improved. The data transmission and fault diagnosis between the display subsystem, the light-side subsystem, and the roadside subsystem are carried out based on the power carrier method, which realizes a data interaction process that does not rely on dedicated network cables, greatly reducing the high cable requirements and maintenance costs of traditional traffic lights.

[0062] As shown in Figure 1, one or more embodiments of the present application provide a flow chart of a method for self-checking the operating status of a traffic light. As shown in Figure 2, a method for self-checking the operating status of a traffic light is applied to a status self-checking system consisting of a traffic signal controller and multiple roadside self-checking systems connected to the traffic signal controller. The roadside self-checking system includes: a roadside subsystem, multiple light-side subsystems connected to the roadside subsystem, and display subsystems corresponding to the light-side subsystems. The method includes the following steps:

[0063] S101: The traffic signal controller generates a signal light control instruction and sends it to each roadside subsystem in the roadside self-inspection system.

[0064] In order to avoid traffic conflicts and improve the efficiency of traffic operation at intersections, it is generally necessary to formulate a signal configuration strategy in a reasonable way and then determine the state that each signal light needs to display based on the signal timing strategy, that is, whether the signal light is on or off. Therefore, in order to be able to control each LED light group in the display subsystem to perform the corresponding light state conversion based on the signal configuration strategy, the traffic control signal in the embodiment of the present application generates the signal light control instruction of the current display subsystem based on the pre-set signal configuration strategy, and then sends the signal light control instruction to the roadside subsystem in each roadside self-inspection system, so that the roadside subsystem forwards the signal light control instruction to the corresponding display subsystem. It should be noted that the traffic signal controller is connected to the roadside subsystem through the external data interface module built into the roadside subsystem, and provides a signal machine phase plate light control connection port based on the external data interface module to realize the collection of the signal light control instructions generated by the traffic signal controller.

[0065] S102: The display subsystem receives the signal light control instructions from the roadside subsystem forwarded by the light side subsystem based on the preset power carrier technology through the built-in light group controller, so as to drive the state change of the LED light groups set on the display subsystem based on the signal light control instructions, and generate circuit status information of each LED light group.

[0066] After determining, based on step S101, that the traffic light control command has been sent to the roadside subsystem by the traffic signal controller, the display subsystem receives the traffic light control command from the roadside subsystem, forwarded by the light-side subsystem using the preset power carrier technology, through its built-in light group controller. The display subsystem then drives the state changes of the LED light groups installed on the display subsystem based on the traffic light control command, generating circuit state information for each LED light group. It should be noted that the display subsystem primarily receives the output voltage from the light-side subsystem, i.e., the output voltage corresponding to the traffic light control command, and displays the light color status and countdown information for motor vehicle or non-motor vehicle control under voltage drive. Light colors include red, yellow, and green.

[0067] Specifically, in one or more embodiments of the present application, the signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on the preset power line carrier technology specifically includes the following process:

[0068] First, the roadside subsystem obtains the signal light control instructions sent by the traffic signal controller based on the signal light phase plate light control connection port on the preset external data interface module. Then, based on the built-in roadside carrier communication module, the roadside subsystem sends the signal light control instructions to the built-in light-side carrier communication modules of the multiple light-side subsystems corresponding to the roadside subsystem as shown in Figure 2 based on the preset power carrier technology. It should be noted that the light-side carrier communication module and the roadside carrier communication module are connected based on the power supply line. In addition, before the light-side subsystem starts working, the built-in transformer module of the light-side subsystem will convert the strong power of the power supply line into the corresponding weak voltage according to the operating voltage requirements of each module in the light-side subsystem, so as to start each module in the light-side subsystem based on the weak voltage. After the signal light control instruction is transmitted to the lamp side subsystem based on the preset power carrier technology, the display subsystem will receive the signal light control instruction sent by the built-in lamp side carrier communication module of the lamp side system based on the preset power carrier technology according to its built-in lamp group controller; it should also be noted that the lamp side carrier communication module and the lamp group controller are connected based on the power supply line, and the lamp group controller is electrically connected to the LED lamp group and is responsible for realizing the luminous display of each signal lamp in the LED lamp group.

[0069] In the above process, the command transmission between the display subsystem and the light-side subsystem and the road-side subsystem is realized based on the power carrier. The LED light group of the display subsystem can be controlled based on the power supply line, avoiding the problem that the traditional traffic lights are based on the one-light-one-line method to realize the traffic signal controller to control each light individually. The red, yellow and green three-color traffic lights require at least four separate power supply lines, which places great demands on cables.

[0070] Furthermore, in one or more embodiments of the present application, before the roadside subsystem sends the signal light control instruction based on the preset power line carrier technology to the built-in light-side carrier communication modules of the multiple light-side subsystems corresponding to the roadside subsystem based on the built-in roadside carrier communication module, the method further includes the following process:

[0071] First, the lamp-side carrier communication module monitors the handshake signal transmitted by the road-side carrier communication module over the power line. If the lamp-side carrier communication module receives the handshake signal from the road-side carrier communication module, it transmits the lamp-side carrier communication module's identification code to the road-side carrier communication module, thereby establishing a communication network between the lamp-side carrier communication module and the road-side carrier communication module. This allows the road-side carrier communication module to identify power line faults through network interaction with the lamp-side carrier communication module.

[0072] S103: The lamp-side subsystem detects the circuit status information of each LED lamp group, and performs hierarchical analysis on the circuit status information to obtain the operating status information of the LED lamp group; wherein the operating status information includes: lamp status information and fault information.

[0073] In order to achieve comprehensive monitoring of the status of traffic lights at intersections and greatly reduce the need for cables, in an embodiment of the present application, the light-side subsystem detects the circuit status information of each LED light group in the display subsystem, performs a hierarchical analysis of the circuit status information, and obtains the operating status information of the LED light group. It should be noted that the operating status information includes: light status information and fault information. Specifically, in one or more embodiments of the present application, the light-side subsystem detects the circuit status information of each LED light group, performs a hierarchical analysis of the circuit status information, and obtains the operating status information of the LED light group, which specifically includes the following process:

[0074] First, the built-in current and voltage detection circuit module of the light-side subsystem collects circuit status information from each light panel in the LED light group at pre-set time intervals. It is understood that this circuit status information includes voltage and current values. Specifically, the current and voltage detection circuit module collects real-time current and voltage values ​​Ii(t) and Vi(t) at intervals Δt. The current and voltage of multiple signal panels detected by a set of light-side subsystems are represented as Ii and Vi, respectively, where i is the panel number. For example, i=1 represents a red panel for motor vehicles, i=2 represents an east-yellow panel for motor vehicles, i=3 represents a green panel for motor vehicles, i=4 represents a red panel for non-motor vehicles, i=5 represents a green panel for non-motor vehicles, and i=6 represents a countdown board. Other unconventional signal panel types, such as lane lights, bus-only lights, and variable lane lights, can also be defined in a similar manner. After obtaining circuit status information, namely voltage and current values, the current and voltage detection circuit module inputs the circuit status information into the connected light status analysis module and fault analysis module, respectively, to obtain fault information and light status information for comprehensive monitoring of the signal lights. The light status analysis module then determines the light status information corresponding to the circuit status information, while the fault analysis module also determines the fault information corresponding to the circuit status information. The light-side carrier communication module receives the light status and fault information to obtain the operating status information of the LED light group.

[0075] Furthermore, in one or more embodiments of the present application, determining the light state information corresponding to the circuit state information based on the light state analysis module specifically includes the following process:

[0076] First, the light state analysis module receives the voltage and current values ​​in the circuit state information. Then, the light state analysis module evaluates the circuit state information based on a preset first voltage threshold and a preset first current threshold, and determines the light state corresponding to the stored circuit state information. It should be noted that the signal light display states include: an on state and an off state. Furthermore, the circuit state information is evaluated based on the preset first voltage threshold and the preset first current threshold to determine the light state corresponding to the circuit state information. Specifically, the following process is involved: If the light state analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is greater than the preset first current threshold, then the corresponding signal light in the LED light group is determined to be in the on state. It should also be noted that the preset first voltage threshold is less than or equal to the lower limit of the rated operating voltage, and the preset first current threshold is less than or equal to the lower limit of the rated operating current. If the light state analysis module determines that the voltage value is less than or equal to the preset first voltage threshold, or the current value is less than or equal to the preset first current threshold, then the corresponding signal light in the LED light group is determined to be in the off state. In addition, it should be noted that the light state information determined in the light state analysis module in the embodiment of the present application will be binary encoded, so that the encoded light state information is transmitted to the roadside subsystem through the light-side carrier communication module.

[0077] Furthermore, in one or more embodiments of the present application, determining the fault information corresponding to the circuit state information based on the fault analysis module specifically includes the following process: if the fault analysis module determines that the voltage value is less than a preset second voltage threshold and the current value is greater than a preset second current threshold, then determining that the corresponding signal light panel in the LED light group is in a short circuit fault state. It should be noted that the preset second voltage threshold is the minimum voltage value of the signal light panel, and the preset second current threshold is greater than the upper limit of the rated operating current.

[0078] Then, if the fault analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is less than the preset third current threshold, then it can be determined that the corresponding signal light panel in the LED light group is in an open circuit fault state. The preset third current threshold is the minimum current value of the signal light panel. If the fault analysis module determines that the voltage value is less than the preset first voltage threshold and the voltage value is greater than the preset second voltage threshold, or the current value is less than the preset third current threshold and the preset first current threshold, then it is determined that the corresponding signal light panel in the LED light group is in an undervoltage fault state. That is, in a certain application scenario of the present application, the principle of the fault analysis module is as follows:

[0079] When the real-time collected voltage is less than the second voltage threshold and the real-time collected current is greater than the second current threshold, the signal panel is determined to be short-circuited. When the real-time collected voltage is greater than the first voltage threshold and the real-time collected current is less than the third current threshold, the signal panel is determined to be open-circuited. When the real-time collected voltage is less than the first voltage threshold and greater than the second voltage threshold, or when the real-time collected current is greater than the third current threshold and less than the first current threshold, the signal panel is determined to be undervoltage. The fault status is then updated every Δt interval, and the three states of short circuit, open circuit, and undervoltage are binary-coded and transmitted to the roadside subsystem via the light-side carrier communication module.

[0080] S104: The roadside subsystem receives the operating status information of the LED light group based on the preset power carrier technology, processes the operating status information to obtain operating status processing information, and sends the operating status processing information to a third-party system based on a preset external data interface module.

[0081] In order to aggregate and process the operating status and then send it to a third-party system, thereby realizing the detection and display of each LED light group in the display subsystem, the roadside subsystem in the embodiment of the present application receives the operating status information of the LED light group based on the preset power carrier technology, processes the operating status information to obtain operating status processing information, that is, the roadside carrier communication module receives the operating status information and fault information collected by the light-side carrier module, and forwards it to the roadside data processing module for further processing and analysis to obtain the operating status processing information, and then sends the operating status processing information to the third-party system based on the preset external data interface module.

[0082] Specifically, in one or more embodiments of the present application, processing the operating status information to obtain operating status processing information, and sending the operating status processing information to a third-party system based on a preset external data interface module, specifically includes the following process:

[0083] First, the roadside data processing module obtains the operating status information received by the roadside carrier communication module to determine whether a signal panel fault condition exists in the operating status information. If a signal panel fault condition exists, the roadside data processing module obtains the signal panel number corresponding to the fault condition and retrieves the continuous operating status information uploaded by the roadside carrier communication module within a preset period. Simultaneously, the roadside data processing module determines the historical operating status information of the roadside carrier communication module based on the signal panel number. This historical operating status information is then extracted based on the type of signal panel fault condition to determine the number of faults corresponding to the signal panel number. If the roadside data processing module determines that the number of faults exceeds a preset fault threshold, the external data interface module is invoked and, based on the preset communication method of the external data interface module, the fault information and light status information are transmitted to a third-party system. It should be noted that the data exchange of signal panel operating status information, fault information, and signal panel configuration information with the third-party system is carried out using RJ45, 4G / 5G, Wi-Fi, 485 / 232, or other communication methods.

[0084] Prior to this, the roadside carrier communication module also identifies the fault status of the power supply line through network interaction between the lamp-side carrier communication modules. The identification method is as follows: First, the roadside carrier communication module sends a networking handshake message to all N lamp-side carrier communication modules. If no confirmation message is received from the i-th lamp-side carrier communication module within the time threshold t, it can be determined that the branch power supply line of the signal lamp group where the i-th lamp-side carrier communication module is located is broken, or the lamp-side carrier communication module device is faulty. In another case, if no confirmation message is received from all lamp-side carrier communication modules within the time threshold t, it is determined that the main power supply line is broken. The fault information determined by the roadside carrier communication module based on the handshake information is also sent to the roadside data processing module for the above-mentioned aggregation processing, and the processed information is sent to the third-party system, realizing comprehensive monitoring of signal lamps and circuits.

[0085] As shown in Figure 2, a schematic diagram of a traffic signal light operating status self-checking system is provided in one or more embodiments of the present application. As shown in Figure 2, the system comprises a traffic signal controller and multiple roadside self-checking systems connected to the traffic signal controller; the roadside self-checking systems comprise: a roadside subsystem, multiple light-side subsystems connected to the roadside subsystem, and display subsystems corresponding to the light-side subsystems;

[0086] The traffic signal controller is used to generate a signal light control instruction and send it to each roadside subsystem in the roadside self-inspection system;

[0087] The display subsystem is configured to receive, via a built-in light group controller, a signal light control instruction from the roadside subsystem forwarded by the light-side subsystem based on a preset power carrier technology, drive a state change of an LED light group provided on the display subsystem based on the signal light control instruction, and generate circuit state information of each LED light group;

[0088] The lamp-side subsystem is used to detect the circuit status information of each LED lamp group and perform hierarchical analysis on the circuit status information to obtain the operating status information of the LED lamp group; wherein the operating status information includes: lamp status information and fault information;

[0089] The roadside subsystem is used to receive the operating status information of the LED lamp group based on the preset power carrier technology, process the operating status information to obtain operating status processing information, and send the operating status processing information to a third-party system based on a preset external data interface module.

[0090] As shown in FIG3 , a schematic diagram of a traffic light operation status self-test device is provided in one or more embodiments of the present application. As shown in FIG3 , a traffic light operation status self-test device includes:

[0091] at least one processor; and,

[0092] a memory communicatively coupled to the at least one processor;

[0093] The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute any of the above-mentioned methods.

[0094] The various embodiments in this specification are described in a progressive manner. Similar portions between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the device, apparatus, and non-volatile computer storage medium embodiments are generally similar to the method embodiments, so their descriptions are relatively simplified. For relevant details, refer to the descriptions of the method embodiments.

[0095] The foregoing describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be performed in an order different from that described in the embodiments and still achieve the desired results. Furthermore, the processes depicted in the accompanying drawings do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0096] The foregoing is merely one or more embodiments of the present application and is not intended to limit the present application. For those skilled in the art, various modifications and variations may be made to one or more embodiments of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for self-checking the operating status of a traffic light, wherein: Applicable to a state self-checking system consisting of a traffic signal controller and a plurality of roadside self-checking systems connected to the traffic signal controller; The roadside self-checking system comprises: a roadside subsystem, a plurality of light side subsystems connected to the roadside subsystem, and a display subsystem corresponding to the light side subsystem; the method comprises: The traffic signal controller generates a signal light control instruction and sends it to the roadside subsystem in each roadside self-check system; The display subsystem receives the signal light control instruction from the roadside subsystem forwarded by the light side subsystem based on the preset power carrier technology through the built-in light group controller, so as to drive the state change of the LED light group set on the display subsystem based on the signal light control instruction, and generate the circuit state information of each LED light group; The lamp-side subsystem detects the circuit status information of each LED lamp group, and performs hierarchical analysis on the circuit status information to obtain the operation status information of the LED lamp group; wherein the operation status information includes: lamp status information and fault information; The roadside subsystem receives the operating status information of the LED lamp group based on the preset power carrier technology, processes the operating status information to obtain operating status processing information, and sends the operating status processing information to a third-party system based on a preset external data interface module.

2. A traffic light operation status self-checking method according to claim 1, wherein: The signal light control instruction from the roadside subsystem forwarded by the light side subsystem based on the preset power line carrier technology specifically includes: The roadside subsystem obtains the signal light control instruction sent by the traffic signal controller according to the signal light control connection port of the signal light phase plate preset on the external data interface module; The roadside subsystem, based on a built-in roadside carrier communication module, sends the signal light control instruction to the built-in lamp-side carrier communication modules of a plurality of lamp-side subsystems corresponding to the roadside subsystem based on a preset power carrier technology; wherein the lamp-side carrier communication module is connected to the roadside carrier communication module based on a power supply line; The display subsystem receives the signal light control instruction sent by the built-in light side carrier communication module of the light side system based on the preset power carrier technology according to the built-in light group controller; wherein the light side carrier communication module is connected to the light group controller based on the power supply line.

3. A method for self-checking the operating status of a traffic signal lamp according to claim 2, wherein: The roadside subsystem, based on the built-in roadside carrier communication module, sends the signal light control instruction to the built-in lamp-side carrier communication modules of the plurality of lamp-side subsystems corresponding to the roadside subsystem based on the preset power carrier technology, and the method further includes: The lamp-side carrier communication module monitors the road-side carrier communication module based on the handshake signal transmitted by the power supply line; If the lamp-side carrier communication module receives the handshake signal of the road-side carrier communication module, the identification code of the lamp-side carrier communication module is sent to the road-side carrier communication module to establish a communication network between the lamp-side carrier communication module and the road-side carrier communication module.

4. A method for self-checking the operating status of a traffic signal lamp according to claim 1, wherein: The lamp-side subsystem detects the circuit status information of each LED lamp group and performs hierarchical analysis on the circuit status information to obtain the operation status information of the LED lamp group, specifically including: The built-in current and voltage detection circuit module of the lamp side subsystem collects the circuit status information of each lamp panel in the LED lamp group based on a preset time interval; wherein the circuit status information includes: voltage value and current value; The current and voltage detection circuit module inputs the circuit state information into the connected light state analysis module and the fault analysis module respectively; Determine the light state information corresponding to the circuit state information based on the light state analysis module; Determine the fault information corresponding to the circuit state information based on the fault analysis module; The lamp-side carrier communication module receives the lamp state information and the fault information to obtain the operating state information of the LED lamp group.

5. A method for self-checking the operating status of a traffic signal lamp according to claim 4, wherein: Determining the light state information corresponding to the circuit state information based on the light state analysis module specifically includes: The light state analysis module receives the voltage value and the current value in the circuit state information; The lamp state analysis module discriminates the circuit state information based on a preset first voltage threshold and a preset first current threshold, and determines the lamp state corresponding to the circuit state information; wherein the lamp state corresponding to the circuit state information includes: an on state and an off state; The step of discriminating the circuit state information based on a preset first voltage threshold and a preset first current threshold to determine the light state corresponding to the circuit state information specifically includes: If the light state analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is greater than the preset first current threshold, it determines that the corresponding signal light in the LED light group is in the on state; wherein the preset first voltage threshold is less than or equal to the lower limit of the rated working voltage, and the preset first current threshold is less than or equal to the lower limit of the rated working current; If the light state analysis module determines that the voltage value is less than or equal to the preset first voltage threshold or the current value is less than or equal to the preset first current threshold, it determines that the corresponding signal light in the LED light group is in the off state.

6. A method for self-checking the operating status of a traffic signal lamp according to claim 4, wherein: Determining the fault information corresponding to the circuit state information based on the fault analysis module specifically includes: If the fault analysis module determines that the voltage value is less than the preset second voltage threshold, and the current value is greater than the preset second current threshold, then the corresponding signal light panel in the LED light group is determined to be in a short circuit fault state; wherein the preset second voltage threshold is the minimum voltage value of the signal light panel, and the preset second current threshold is greater than the upper limit of the rated working current; If the fault analysis module determines that the voltage value is greater than the preset first voltage threshold and the current value is less than the preset third current threshold, it determines that the corresponding signal light panel in the LED light group is in an open circuit fault state; wherein the preset third current threshold is the minimum current value of the signal light panel; If the fault analysis module determines that the voltage value is less than the preset first voltage threshold and the voltage value is greater than the preset second voltage threshold, or the current value is less than the preset third current threshold and the preset first current threshold, it determines that the corresponding signal light panel in the LED light group is in an undervoltage fault state.

7. A method for self-checking the operating status of a traffic signal lamp according to claim 4, wherein: Processing the running status information to obtain running status processing information, and sending the running status processing information to a third-party system based on a preset external data interface module, specifically includes: The roadside data processing module in the roadside subsystem obtains the operation status information received by the built-in roadside carrier communication module of the roadside subsystem to determine whether there is a signal light panel fault state in the operation status information; If yes, the roadside data processing module obtains the signal light panel number corresponding to the fault state of the signal light panel, and obtains the continuous operation state uploaded by the roadside carrier communication module within a preset period. information; The roadside data processing module determines the historical operation status information of the roadside carrier communication module based on the signal light panel number, and extracts the historical operation status information based on the type of the signal light panel fault state to determine the number of faults corresponding to the signal light panel number; If the roadside data processing module determines that the number of faults is greater than a preset fault number threshold, it calls the external data interface module and sends the fault information and the light state information to a third-party system based on the preset communication method of the external data interface module.

8. A method for self-checking the operating status of a traffic signal lamp according to claim 1, wherein: Before the display subsystem receives, through the built-in light group controller, the signal light control instruction from the roadside subsystem forwarded by the light side subsystem based on the preset power carrier technology, the method further includes: The built-in transformer module of the lamp-side subsystem converts the strong electricity of the power supply line into a corresponding weak voltage according to the working voltage requirements of each module in the lamp-side subsystem, so as to start each module in the lamp-side subsystem based on the weak voltage.

9. A traffic light operation status self-checking system, wherein: The system is composed of a traffic signal controller and a plurality of roadside self-checking systems connected to the traffic signal controller; the roadside self-checking system comprises: a roadside subsystem, a plurality of light side subsystems connected to the roadside subsystem, and a display subsystem corresponding to the light side subsystem; The traffic signal controller is used to generate a signal light control instruction and send it to the roadside subsystem in each roadside self-check system; The display subsystem is used to receive the signal light control instruction from the roadside subsystem forwarded by the light side subsystem based on the preset power carrier technology through the built-in light group controller, so as to drive the state change of the LED light group set on the display subsystem based on the signal light control instruction, and generate the circuit state information of each LED light group; The lamp side subsystem is used to detect the circuit status information of each LED lamp group, and perform hierarchical analysis on the circuit status information to obtain the operation status information of the LED lamp group; wherein the operation status information includes: lamp state information and fault information; The roadside subsystem is used to receive the operating status information of the LED lamp group based on the preset power carrier technology, to process the operating status information to obtain operating status processing information, and to send the operating status processing information to a third-party system based on a preset external data interface module.

10. A traffic light operation status self-checking device, wherein: The device comprises: at least one processor; and, a memory communicatively coupled to the at least one processor; The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can: execute any of the methods described in claims 1-8 above.

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