Traffic signal operation state monitoring method and system
By combining non-intrusive and intrusive monitoring methods, the reliability problem of traffic signal operation status monitoring methods has been solved, enabling timely and accurate monitoring and intelligent management of traffic light operation status, and improving fault reporting efficiency.
Patent Information
- Application Number
- CN202511859866.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-10
- Publication Date
- 2026-02-24
AI Technical Summary
Existing methods for monitoring the operational status of traffic signals are not very reliable and are difficult to monitor the working status of traffic lights accurately and in a timely manner. They are prone to misjudgment, especially in complex environments, and the efficiency of fault reporting is low.
The operation status of traffic lights is monitored using both non-intrusive and intrusive methods. The fault status is determined by comparing the baseline value and the measured value, and the parameters are recorded by the posture sensor. The fault reporting unit reports the information to the fault monitoring platform at regular intervals.
It enables intelligent management of traffic lights, which can reflect the working status of traffic lights in a timely and accurate manner, improving the reliability of monitoring methods and the efficiency of fault reporting.
Smart Images
Figure CN121565007A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of intelligent road traffic technology, specifically to a method and system for monitoring the operation status of traffic signals. Background Technology
[0002] With the development of urban road traffic, people have increasingly higher requirements for smooth traffic flow. Traffic lights are at the forefront of the road traffic control system, and their proper functioning directly affects the smoothness of traffic flow, and in severe cases, can even cause traffic accidents. Therefore, monitoring the working status of traffic lights is of paramount importance.
[0003] For monitoring the status of traffic lights, road traffic signal controllers can detect the voltage and current status of the signal light driver output terminals. However, due to installation and construction reasons for traffic light equipment and the complexity of the actual working environment, this function may not function properly. For example, if multiple light groups are connected in parallel at the driver output terminal, even if one signal light fails, the signal controller may not be able to detect it. Furthermore, at intersections, residual voltage may exist at the driver output terminals, or leakage current may occur due to aging cables and insufficient insulation. These factors can lead to misjudgments in signal control. These situations make it difficult for the signal controller to accurately monitor the operating status of traffic lights.
[0004] Other signal light status detection methods have also emerged in the market, but most of them are relatively simple and have limited applications.
[0005] Secondly, currently, reporting traffic light malfunctions mainly relies on manual methods. For important or busy intersections, feedback may be timely, but for remote intersections, the process can be slow, leading to low efficiency.
[0006] Therefore, existing traffic signal operation status monitoring methods suffer from low reliability due to the aforementioned technical problems. It is evident that improving the reliability of traffic signal operation status monitoring methods is a problem that needs to be solved in this field. Summary of the Invention
[0007] To address the technical problem of low reliability in existing traffic signal operation status monitoring methods, the present invention aims to provide a traffic signal operation status monitoring method that can reflect the working status of traffic lights in a timely and accurate manner, realize intelligent management of traffic lights, and improve the reliability of traffic signal operation status monitoring methods. On this basis, a traffic signal operation status monitoring system is also provided, which effectively overcomes the problems existing in the prior art.
[0008] To achieve the above objectives, the present invention provides a method for monitoring the operational status of traffic signals, the method comprising the following steps: S1: Traffic signal operation status monitoring This step monitors the working status of the traffic lights by monitoring the red, yellow, and green signals and an attitude loop in both non-intrusive and intrusive ways when the traffic lights are working normally. S2: Fault Reporting: This step involves periodically reporting the power information or fault information of each indicator light to the fault monitoring platform.
[0009] Furthermore, non-invasive monitoring includes the following steps: S11: Non-invasive monitoring method S111: First, sample the input state corresponding to each of the three signal loops, and then perform digital conversion to obtain the corresponding input level signal; S112: Then, the voltage and current of the three signal circuits are sampled respectively, and then the measured voltage, measured current and measured power of the three signal light circuits are obtained through digital conversion. S113: The measured voltage, measured current, and measured power values converted in S12 are used to calculate the voltage reference value, current reference value, and power reference value of the three signal lamp circuits respectively through an adaptive algorithm; S114: Compare the phase reference value and the measured value obtained from S12 and S13 to determine the fault status of the signal light; S115: Monitor the pose status of the three traffic lights respectively, record the pose parameters, and determine the pose status of the traffic lights through the corresponding algorithm.
[0010] Furthermore, if the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and an "attitude deviation" is reported.
[0011] Furthermore, invasive monitoring includes the following steps: S12: Invasive monitoring S121: First, the input signals of the three signal loops are collected respectively, and the power supply of the traffic lights is entered to collect the output signals of the three signal loops. S122: The signals acquired by S121 are digitally converted to obtain the input and output level signals of the three signal loops respectively; S123: Compare the input and output values obtained from S122 to determine the fault status of the traffic light; S124: Monitor the position and orientation of the traffic lights respectively, record the orientation parameters, and determine the position and orientation of the traffic lights through the corresponding algorithm.
[0012] Furthermore, if the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and an "attitude deviation" is reported.
[0013] To achieve the above objectives, the present invention provides a traffic signal operation status monitoring system, which includes a traffic signal operation status monitoring unit, a fault reporting unit, and a fault monitoring platform unit. The traffic signal operation status monitoring unit interacts with the fault reporting unit, and the fault reporting unit interacts with the fault monitoring platform unit. The traffic signal operation status monitoring unit is used to monitor the operating status of three traffic light circuits and transmits the data to the fault monitoring platform unit through the fault reporting unit for monitoring.
[0014] Furthermore, the traffic signal operation status monitoring unit includes a non-intrusive monitoring module and an intrusive monitoring module. The non-intrusive monitoring module monitors the operation status and position status of the traffic lights using a non-intrusive method, while the intrusive monitoring module monitors the operation status and position status of the traffic lights using an intrusive method.
[0015] Furthermore, the non-invasive detection module includes a signal light assembly and a first fault detector, the first fault detector including a first optocoupler, a first attitude circuit, a current transformer assembly, and an energy calculator; The first optocoupler is connected to the signal light assembly and the fault monitoring platform unit respectively, and samples the input status of the three signal loops respectively. After digital conversion, the corresponding input level signal is obtained and transmitted to the fault reporting unit. The transformer assembly includes three sets of current transformers and voltage transformers, which are connected to the signal light assembly and the energy calculator respectively. The voltage and current of the three signal lights are sampled and digitally converted to obtain the corresponding measured values of voltage, current and power. The energy calculator is connected to the current transformer assembly and the fault reporting unit respectively. The energy calculator calculates the reference values of voltage, current and power from the three sets of measured values and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit compares the reference values and the measured values to determine the fault status of the signal light. The first attitude loop is connected to the signal light assembly and the fault reporting unit respectively. The first attitude loop monitors the position and pose of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit uses a corresponding algorithm to determine the position and pose of the signal light.
[0016] Furthermore, the invasive monitoring module includes a signal light assembly and a second fault detector, the second fault detector including a second optocoupler, a signal light power supply, a third optocoupler, and a second attitude circuit; The second optocoupler is connected to the signal light circuit and the fault reporting unit respectively, and monitors the input signal of the signal light and transmits it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding input level signal and transmits it to the fault monitoring platform unit. The signal light power supply and the third optocoupler work together to connect to the signal light circuit and the fault reporting unit, respectively. They work together to monitor the output signal of the signal light and transmit it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding output level signal and transmits it to the fault monitoring platform unit. The fault detection platform unit compares the input and output values to determine the fault status of the signal light. The second attitude loop is connected to the signal light assembly and the fault reporting unit respectively. The second attitude loop monitors the position and pose of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit, and the fault monitoring platform unit uses a corresponding algorithm to determine the position and pose of the signal light.
[0017] Furthermore, the fault reporting unit includes an MCU module and a transmission module. The MCU module is used to receive data information monitored by the traffic signal operation status monitoring unit. The transmission module interacts with the MCU module. The MCU module periodically reports the power information or fault information of each light of the current traffic light to the transmission module. The transmission module interacts with the fault monitoring platform unit.
[0018] The traffic signal operation status monitoring method and system provided by this invention monitors the traffic signal operation status through both invasive and non-invasive methods. The non-invasive method determines the fault status of the traffic light by comparing the baseline value and the measured value of the traffic light, while the invasive method determines the fault status of the traffic light by monitoring the input and output values of the traffic light. At the same time, the above two methods are combined with a pose sensor to record the pose status parameters of the traffic light. The fault condition of the traffic light is determined by comprehensively comparing the data collected by the above three methods, which can timely and accurately reflect the working status of the traffic light and realize intelligent management of traffic lights. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.
[0020] Figure 1 This is a flowchart illustrating the traffic signal operation status monitoring method. Figure 2 This is a schematic diagram illustrating the specific process of fault reporting in this traffic signal operation status monitoring method. Figure 3 This is a schematic diagram of the structure of the non-intrusive module in this traffic signal operation status monitoring system; Figure 4 This is a schematic diagram of the intrusive module in the traffic signal operation status monitoring system.
[0021] The following are the component labels in the attached diagram: 11. Signal light 12. Signal light circuit 13. Signal controller 14. First optocoupler 15. Current transformer 16. Energy calculator 17. First attitude circuit 21. Second optocoupler 22. Signal light power supply 23. Third optocoupler 24. Second attitude circuit 31. MCU module 32. Transmission module. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.
[0023] Existing traffic signal operation status monitoring methods suffer from low reliability. To address this issue, this invention provides a traffic signal operation status monitoring method that can promptly and accurately reflect the working status of traffic lights, enabling intelligent management of traffic lights and improving the reliability of traffic signal operation status monitoring methods.
[0024] This solution provides a method for monitoring the operational status of traffic signals. (See also...) Figure 1 It includes the following steps: S1: Traffic signal operation status monitoring This step monitors the working status of the traffic lights by monitoring the red, yellow, and green signals and an attitude loop in both non-intrusive and intrusive ways when the traffic lights are working normally.
[0025] S11: Non-invasive monitoring method S111: First, sample the input states corresponding to these three signal loops respectively, and then perform digital conversion to obtain the corresponding input level signals.
[0026] S112: Then, the voltage and current of the three signal circuits are sampled respectively, and then the measured voltage (UTY), measured current (ITY), and measured power (PTY) of the three signal light circuits are obtained through digital conversion.
[0027] S113: The measured voltage, measured current, and measured power values converted in S112 are used to calculate the voltage reference value (UAR), current reference value (IAR), and power reference value (PAR) for the three signal light circuits using an adaptive algorithm. S114: Compare the phase reference value and the measured value obtained from S112 and S113 to determine the fault status of the signal light.
[0028] This fault condition includes, but is not limited to, black light, yellow flashing light, light color conflict, and missing countdown segments.
[0029] For example, the parameters in Table 1 represent the blackout status. Table 1
[0030] The parameters in Table 2 represent the yellow flashing condition. Table 2
[0031] The parameters in Table 3 represent the light color conflict situation. Table 3
[0032] The parameters in Table 4 indicate the status of missing countdown segments. Table 4
[0033] S115: Monitor the pose status of the three traffic lights respectively, record the pose parameters, and determine the pose status of the traffic lights through the corresponding algorithm.
[0034] If the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and an "attitude deviation" report is submitted.
[0035] S12: Invasive monitoring S121: First, the input signals of the three signal loops are collected respectively, and the power supply of the traffic lights is entered to collect the output signals of the three signal loops. S122: The signals acquired by S121 are digitally converted to obtain the input and output level signals of the three signal loops respectively; S123: Compare the input and output values obtained from S122 to determine the fault status of the traffic light.
[0036] This fault condition includes, but is not limited to, black light, yellow flashing light, and light color conflict.
[0037] For example, the parameters in Table 5 represent the blackout status. Table 5
[0038] The parameters in Table 6 represent the yellow flashing condition. Table 6
[0039] The parameters in Table 7 represent the light color conflict situation (red-green conflict). Table 7
[0040] S124: Monitor the position and orientation of the traffic lights respectively, record the orientation parameters, and determine the position and orientation of the traffic lights through the corresponding algorithm.
[0041] When the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and "attitude deviation" is reported.
[0042] S2: Fault Reporting: This step involves periodically reporting the power information or fault information of each indicator light to the fault monitoring platform.
[0043] See Figure 2 This solution preferably uses a timed, periodic reporting method for the current status information of the traffic lights, with the period configurable via the platform. When the reporting period ends, the timestamp of the latest data is checked and compared with the current timestamp. If the time difference is less than a certain threshold (e.g., 60 seconds), it indicates that the most recently received data is within the threshold, and the current fault information is reported to the platform. If the time difference is greater than the threshold, no report is made to the platform.
[0044] The traffic signal operation status monitoring method presented in this example can be configured into a corresponding software program to form a traffic signal operation status monitoring system. When running, this software program will execute the aforementioned traffic signal operation status monitoring method and store it in a suitable storage medium for the processor to retrieve and execute.
[0045] The resulting traffic signal operation status monitoring system mainly includes, in terms of function, a traffic signal operation status monitoring unit, a fault reporting unit, and a fault monitoring platform unit. The traffic signal operation status monitoring unit interacts with the fault reporting unit, and the fault reporting unit interacts with the fault monitoring platform unit. The traffic signal operation status monitoring unit is used to monitor the working status of the three traffic light circuits and transmits the data to the fault monitoring platform unit for monitoring through the fault reporting unit.
[0046] The traffic signal operation status monitoring unit in this system is used to monitor the operation status of traffic lights. It includes a non-intrusive monitoring module and an intrusive monitoring module.
[0047] The non-invasive monitoring module monitors the operational and positional status of traffic lights using a non-invasive method. (See also...) Figure 3 The non-invasive detection module includes a signal light assembly and a first fault detector.
[0048] Furthermore, the signal light assembly consists of a set of signal lights 11, a signal light circuit 12, and a signal controller 13. The composition of the signal light assembly is well known to those skilled in the art, and will not be described in detail here.
[0049] The first fault detector interacts with the signal light assembly to detect faults in the signal light assembly. The first fault detector includes a first optocoupler 14, a first attitude circuit 17, a current transformer assembly 15, and an energy calculator 16.
[0050] The first optocoupler 14 is connected to the signal light circuit 12 and the fault reporting unit respectively. The first optocoupler 14 samples the input status of the three signal circuits respectively, and after digital conversion, obtains the corresponding input level signal and transmits it to the fault reporting unit.
[0051] The transformer assembly 15 includes three sets of current transformers and voltage transformers. The three sets of current transformers and voltage transformers are connected to the signal light circuit 12 and the power calculator 16, respectively. They sample the voltage and current of the three signal circuits, and after digital conversion, obtain the corresponding measured voltage value, measured current value and measured power value.
[0052] The energy calculator 16 is connected to the current transformer assembly 15 and the fault reporting unit. The energy calculator 16 calculates the voltage reference value (UAR), current reference value (IAR), and power reference value from the three sets of measured voltage, current, and power values, and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit, which compares the phase reference value and the measured value to determine the fault status of the indicator light.
[0053] The first attitude loop 17 is connected to the signal light loop 12 and the fault reporting unit respectively. The first attitude loop 17 monitors the position and orientation of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit uses a corresponding algorithm to determine the position and orientation of the signal light.
[0054] The invasive monitoring module monitors the operational and positional status of traffic lights using an invasive method. (See also...) Figure 4 The invasive monitoring module includes a signal light assembly and a second fault detector.
[0055] Furthermore, the signal light assembly consists of a set of signal lights 11, a signal light circuit 12, and a signal controller 13. The composition of the signal light assembly is well known to those skilled in the art, and will not be described in detail here.
[0056] The second fault detector interacts with the signal light assembly to detect faults in the assembly. The second fault detector includes a second optocoupler 21, a signal light power supply 22, a third optocoupler 23, and a second attitude circuit 24.
[0057] The second optocoupler 21 is connected to the signal light circuit 12 and the fault reporting unit respectively. The second optocoupler 21 monitors the input signal of the signal light and transmits it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding input level signal.
[0058] The signal light power supply 22 and the third optocoupler 23 work together to connect to the signal light circuit 12 and the fault reporting unit, respectively. The signal light power supply 22 and the third optocoupler 23 work together to monitor the output signal of the signal light and transmit it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding output level signal.
[0059] The fault reporting unit transmits the information to the fault detection platform unit, which compares the input and output values to determine the fault status of the signal light.
[0060] The second attitude loop 24 is connected to the signal light loop 12 and the fault reporting unit respectively. The second attitude loop 12 monitors the position and orientation of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit uses a corresponding algorithm to determine the position and orientation of the signal light.
[0061] The traffic signal operation status monitoring unit can perform the above-mentioned traffic signal operation status monitoring steps to achieve the corresponding functions.
[0062] The fault reporting unit is used to periodically report faults to the fault monitoring platform unit. The fault reporting unit includes an MCU module 31 and a transmission module 32.
[0063] The MCU module 31 interacts with both the non-invasive monitoring module and the invasive monitoring module to receive data from them.
[0064] The transmission module 32 interacts with the MCU module 31. The MCU module 31 periodically reports the power information or fault information of each light in the current signal light to the transmission module 32.
[0065] When information is received from MCU module 31, the current information and timestamp are stored in transmission module 32. When new data is received, the current information and timestamp are overwritten.
[0066] The fault reporting unit is configured to perform the above-mentioned fault reporting steps to achieve the corresponding functions.
[0067] The traffic signal operation status method and system constructed by the above scheme can reflect the working status of traffic lights in a timely and accurate manner, realize intelligent management of traffic lights, and improve the reliability of traffic signal operation status monitoring methods.
[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.
Claims
1. A method for monitoring the operational status of traffic signals, characterized in that, The traffic signal operation status monitoring method includes the following steps: S1: Traffic signal operation status monitoring This step monitors the working status of the traffic lights by monitoring the red, yellow, and green signals and an attitude loop in both non-intrusive and intrusive ways when the traffic lights are working normally. S2: Fault Reporting: This step involves periodically reporting the power information or fault information of each indicator light to the fault monitoring platform.
2. The traffic signal operation status monitoring method according to claim 1, characterized in that, Non-invasive monitoring includes the following steps: S11: Non-invasive monitoring method S111: First, sample the input state corresponding to each of the three signal loops, and then perform digital conversion to obtain the corresponding input level signal; S112: Then, the voltage and current of the three signal circuits are sampled respectively, and then the measured voltage, measured current and measured power of the three signal light circuits are obtained through digital conversion. S113: The measured voltage, measured current, and measured power values converted in S12 are used to calculate the voltage reference value, current reference value, and power reference value of the three signal lamp circuits respectively through an adaptive algorithm; S114: Compare the phase reference value and the measured value obtained from S12 and S13 to determine the fault status of the signal light; S115: Monitor the pose status of the three traffic lights respectively, record the pose parameters, and determine the pose status of the traffic lights through the corresponding algorithm.
3. The method for monitoring the operational status of traffic signals according to claim 2, characterized in that, If the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and "attitude deviation" is reported.
4. The method for monitoring the operational status of traffic signals according to claim 1, characterized in that, Invasive monitoring methods include the following steps: S12: Invasive monitoring S121: First, the input signals of the three signal loops are collected respectively, and the power supply of the traffic lights is entered to collect the output signals of the three signal loops. S122: The signals acquired by S121 are digitally converted to obtain the input and output level signals of the three signal loops respectively; S123: Compare the input and output values obtained from S122 to determine the fault status of the traffic light; S124: Monitor the position and orientation of the traffic lights respectively, record the orientation parameters, and determine the position and orientation of the traffic lights through the corresponding algorithm.
5. The traffic signal operation status monitoring method according to claim 4, characterized in that, If the change in attitude parameters exceeds a certain threshold, an attitude fault is identified, and "attitude deviation" is reported.
6. A traffic signal operation status monitoring system, characterized in that, The traffic signal operation status monitoring system includes a traffic signal operation status monitoring unit, a fault reporting unit, and a fault monitoring platform unit. The traffic signal operation status monitoring unit interacts with the fault reporting unit, and the fault reporting unit interacts with the fault monitoring platform unit. The traffic signal operation status monitoring unit is used to monitor the working status of three traffic light circuits and transmits the data to the fault monitoring platform unit through the fault reporting unit for monitoring.
7. A traffic signal operation status monitoring system according to claim 6, characterized in that, The traffic signal operation status monitoring unit includes a non-intrusive monitoring module and an intrusive monitoring module. The non-intrusive monitoring module monitors the operation status and position status of the traffic lights using a non-intrusive method, while the intrusive monitoring module monitors the operation status and position status of the traffic lights using an intrusive method.
8. A traffic signal operation status monitoring system according to claim 7, characterized in that, The non-invasive detection module includes a signal light assembly and a first fault detector, the first fault detector including a first optocoupler, a first attitude circuit, a current transformer assembly, and an energy calculator. The first optocoupler is connected to the signal light assembly and the fault monitoring platform unit respectively, and samples the input status of the three signal loops respectively. After digital conversion, the corresponding input level signal is obtained and transmitted to the fault reporting unit. The transformer assembly includes three sets of current transformers and voltage transformers, which are connected to the signal light assembly and the energy calculator respectively. The voltage and current of the three signal lights are sampled and digitally converted to obtain the corresponding measured values of voltage, current and power. The energy calculator is connected to the current transformer assembly and the fault reporting unit respectively. The energy calculator calculates the reference values of voltage, current and power from the three sets of measured values and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit compares the reference values and the measured values to determine the fault status of the signal light. The first attitude loop is connected to the signal light assembly and the fault reporting unit respectively. The first attitude loop monitors the position and pose of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit. The fault monitoring platform unit uses a corresponding algorithm to determine the position and pose of the signal light.
9. A traffic signal operation status monitoring system according to claim 7, characterized in that, The invasive monitoring module includes a signal light assembly and a second fault detector. The second fault detector includes a second optocoupler, a signal light power supply, a third optocoupler, and a second attitude circuit. The second optocoupler is connected to the signal light circuit and the fault reporting unit respectively, and monitors the input signal of the signal light and transmits it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding input level signal and transmits it to the fault monitoring platform unit. The signal light power supply and the third optocoupler work together to connect to the signal light circuit and the fault reporting unit, respectively. They work together to monitor the output signal of the signal light and transmit it to the fault reporting unit. The fault reporting unit performs digital conversion to obtain the corresponding output level signal and transmits it to the fault monitoring platform unit. The fault detection platform unit compares the input and output values to determine the fault status of the signal light. The second attitude loop is connected to the signal light assembly and the fault reporting unit respectively. The second attitude loop monitors the position and pose of the signal light, records the attitude parameters and transmits them to the fault reporting unit. The fault reporting unit transmits them to the fault monitoring platform unit, and the fault monitoring platform unit uses a corresponding algorithm to determine the position and pose of the signal light.
10. A traffic signal operation status monitoring system according to claim 6, characterized in that, The fault reporting unit includes an MCU module and a transmission module. The MCU module is used to receive data information monitored by the traffic signal operation status monitoring unit. The transmission module interacts with the MCU module. The MCU module periodically reports the power information or fault information of each light of the current traffic light to the transmission module. The transmission module interacts with the fault monitoring platform unit.