Trans-department signal lamp fault safety early warning system and early warning method

Abstract

The invention discloses a cross-department signal lamp fault safety early warning system and early warning method, a signal lamp digital operation and maintenance system center platform is used for receiving signal lamp fault information uploaded by each signal lamp fault automatic monitoring terminal device in real time and realizing matching of an intersection, a lane direction and a specific signal lamp where a fault occurs; the key vehicle supervision system center platform is used for realizing remote supervision, early warning and prompting effects, and has a signal lamp fault data receiving function, a signal lamp fault early warning function and a data feedback function; the signal lamp fault automatic monitoring terminal devices are used for automatically identifying signal lamp types, positioning signal lamp installation positions, monitoring signal lamp no-signal output, monitoring signal lamp light-emitting unit normally-on, monitoring light-emitting unit abnormal extinguishment, monitoring countdown short stroke segments, and monitoring light-emitting unit abnormal yellow flash for corresponding signal lamps. Signal release conflict monitoring and signal lamp body deflection monitoring. According to the invention, cross-department sharing of traffic signal lamp fault data is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of traffic management, and in particular to a cross-departmental signal light failure safety early warning system and early warning method. Background Art

[0002] With socioeconomic development, public demand for transportation services is increasing. Coordinating the relationships between people, vehicles, and roads has become a pressing issue for transportation authorities. Traffic lights are core equipment in urban traffic organization and management systems, controlling and regulating key nodes in the road network and crucial for the smooth operation of the entire network. As the number of signal-controlled intersections increases, so too does the incidence of abnormal traffic congestion caused by traffic signal failures, posing a significant safety hazard. Therefore, a safety warning system for traffic signal failures is crucial.

[0003] The normal operation of traffic lights is a prerequisite for the normal operation of road network traffic. The timely detection and effective repair of malfunctioning traffic lights is a necessary condition for ensuring the normal operation of the road network. Currently, the detection of traffic light faults mainly relies on manual inspections, and fault repairs rely on manual telephone notifications. This method is costly, inefficient, and difficult to achieve 24-hour uninterrupted monitoring. As a result, traffic light faults persist for a long time and increase the risk of traffic accidents. When traffic lights malfunction, there is a lack of effective real-time fault monitoring, information sharing and release, and safety warning methods. When traffic lights malfunction, major accidents caused by drivers failing to notice and slowing down when they fail to do so are common. This poses a major safety hazard to traffic travel and fails to meet the requirements of refined urban management and the construction of a safe and orderly traffic environment.

[0004] Therefore, how to monitor traffic light failures and share failure data across departments in a timely manner, improve the timeliness of traffic light failure detection, increase the vigilance of key vehicles driving at intersections during traffic light failures, and reduce the possibility of major traffic accidents involving key vehicles has become a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a cross-departmental traffic light failure safety warning system and warning method, the purpose of which is to overcome the problem that drivers fail to notice traffic light failures in time, resulting in frequent major accidents. It can improve the timeliness of traffic light failure detection and send the information to the driver's vehicle-side device in real time, using voice to remind the driver to drive carefully, reduce the incidence of traffic accidents, and improve traffic safety.

[0006] To achieve the above objectives, the present invention discloses a cross-departmental signal light failure safety warning system, which includes a signal light digital operation and maintenance system center platform, a key vehicle supervision system center platform, and a signal light failure automatic monitoring terminal device installed at each signal light at the intersection;

[0007] The traffic light digital operation and maintenance system center platform is deployed in the computer room of the public security traffic police department, and is used to receive the traffic light fault information uploaded by each traffic light fault automatic monitoring terminal device in real time, and combine all the traffic light fault information with geographic information data to achieve matching of the intersection, lane direction, and specific traffic light where the fault occurred;

[0008] The central platform of the key vehicle supervision system is deployed in the computer room of the transportation department and is used to receive video image information, vehicle driving position information and speed information from video cameras and / or on-board terminals installed on key vehicles in real time, and send voice information to the video cameras and / or on-board terminals to achieve remote supervision, early warning and prompting functions, and has the functions of receiving signal light fault data, early warning of signal light faults and data feedback;

[0009] Each of the signal light fault automatic monitoring terminal devices is deployed inside or outside the shell of the corresponding signal light at the intersection, and is electrically connected to the corresponding signal light. They are all used to automatically identify the signal light type, locate the signal light installation position, monitor the signal light for no signal output, monitor the signal light's light unit is always on, monitor the light unit is abnormally off, monitor the countdown missing section, monitor the light unit for abnormal yellow flashing, monitor signal release conflicts and monitor the deflection of the signal light body.

[0010] Preferably, the central platform of the traffic light digital operation and maintenance system includes a fault automatic monitoring function module, a fault manual reporting function module, a fault review function module, a fault classification function module, and a data sharing function module;

[0011] The automatic fault monitoring function module is used to receive the signal light fault information obtained by each signal light fault automatic monitoring terminal device in real time;

[0012] The signal light fault information includes signal light type, signal light installation location, signal light no signal output monitoring information, signal light light unit constant light monitoring information, signal light unit abnormal extinguishing monitoring information, countdown missing segment monitoring information, signal light unit abnormal yellow flashing monitoring information, signal release conflict monitoring information and signal light body deflection monitoring information;

[0013] The manual fault reporting module is used to receive descriptions, pictures, and videos related to traffic light faults from operation and maintenance personnel and the public through WeChat applets, Alipay, and traffic police apps on mobile phones, and upload the descriptions, pictures, and videos related to traffic light faults to the central platform of the traffic light digital operation and maintenance system;

[0014] The fault audit function module includes system intelligent audit;

[0015] The system intelligent review refers to the manual review, which refers to the manual secondary confirmation of the description, pictures and video information related to the traffic light failure;

[0016] The fault classification function module is used to classify all the signal light fault information into major faults and general faults based on vehicle driving safety;

[0017] Among them, the major faults include the signal light turning more than 45 degrees in the direction of the x-axis, y-axis or z-axis, the signal light falling, the signal light color conflict, the signal light being black, the signal light flashing yellow and the intersection manhole cover being lost;

[0018] The general faults include the deflection of the signal light between 0° and 45° in the direction of the x-axis, y-axis or z-axis, the signal light being damaged, and other faults other than the major faults;

[0019] The data sharing function module is used to share the name of the intersection where the important fault occurs, the lane direction, the longitude and latitude of the intersection, the longitude and latitude of the traffic light, the phase of the traffic light at the intersection, the time when the important fault occurs, and the time when the important fault ends to the traffic light digital operation and maintenance system center platform for sharing.

[0020] More preferably, the fault review function module further includes manual review; the manual review refers to manual secondary confirmation of the description, pictures and video information related to the traffic light fault.

[0021] More preferably, the process of the system intelligent audit is as follows:

[0022] Step 1: receiving data measured by a turn detector of each of the signal light fault automatic monitoring terminal devices in real time, and using the coordinate data of the corresponding signal light in a stationary state as the origin coordinates;

[0023] Step 2: Integrate the three-axis angular velocity data obtained by the steering detector to obtain the corresponding three-axis deflection angle. The specific calculation formula is as follows:

[0024]

[0025] Wherein, t0 represents the initial time of measurement, which refers to the initial static time after the deflection fault on the corresponding steering detector is repaired; t i Indicates the end time of the measurement, i = 1, 2, 3, 4, ..., refers to the moment when the angular velocity changes to zero; ω xi 、ω yi 、ω zi Respectively represent the time interval [t i-1， t i ] angular velocity around the x-axis, y-axis and z-axis; θ x ,θ y and θ z The absolute value of |θ x |、|θ y | and |θ z | respectively represent the deflection angles obtained by integrating the three-axis angular velocities;

[0026] Step 3: When the x, y, and z axis angular velocity data are all 0, the angle value obtained according to the integral formula is |θ x |、|θ y |、|θ z |The final deflection value of;

[0027] Step 4: Compare the final deflection value with a threshold value. When the angle exceeds the threshold value, it is confirmed that the signal light has a deflection fault.

[0028] Preferably, the signal light fault data receiving function refers to receiving signal light fault information sent by the signal light digital operation and maintenance system central platform;

[0029] The signal light fault information includes the fault type and the name of the intersection where the fault occurs, lane direction, intersection longitude and latitude, signal light longitude and latitude, intersection signal light phase, occurrence time, and end time.

[0030] The signal light failure warning function is to issue a voice warning to the key vehicles on the road that are about to drive to the corresponding direction of the intersection where the signal light failure occurs through the corresponding video camera and / or vehicle terminal;

[0031] The data feedback function is to feed back to the central platform of the traffic light digital operation and maintenance system the driving trajectory, driving speed and acceleration of the key vehicle from receiving the voice warning to passing the intersection where the traffic light failure occurs.

[0032] More preferably, the voice warning is performed at least twice, the first voice warning is performed at an upstream intersection of the fault intersection, and the second voice warning is performed about 150 meters before the stop line of the fault intersection.

[0033] Preferably, the traffic light digital operation and maintenance system central platform and the key vehicle supervision system central platform are connected via a dedicated line, have data interfaces with each other, and share and exchange data through security boundary equipment.

[0034] Preferably, each of the signal light fault automatic monitoring terminal devices includes a main control unit, a data acquisition unit and an Internet of Things communication module;

[0035] Each of the data acquisition units includes a positioning system, a direction detector, a voltage detector and a current detector;

[0036] Each of the steering detectors is a three-axis gyroscope;

[0037] Each of the IoT communication modules includes a wireless communication module and corresponding communication cards and communication services, or includes a wired communication module, which is connected to the traffic light digital operation and maintenance system center platform through the operator's 4G or 5G VPDN wireless communication or wired communication, and uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time.

[0038] Preferably, the key vehicles include dangerous goods transport vehicles, long-distance passenger vehicles, tourist chartered vehicles, public buses and taxis, and the corresponding video cameras and / or vehicle-mounted terminals are connected to the key vehicle supervision system central platform through the operator's 4G or 5G VPDN network to receive voice warnings from the key vehicle supervision system central platform.

[0039] The present invention also provides a cross-departmental signal light failure safety warning method, which operates on the above-mentioned cross-departmental signal light failure safety warning system and includes the following steps:

[0040] Step A, fault monitoring, specifically: using a signal light fault automatic monitoring terminal device to monitor in real time the current, voltage, and deflection data of the corresponding signal light light unit;

[0041] Step B, fault uploading, specifically: when a traffic light fails, the corresponding traffic light fault automatic monitoring terminal device uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time through the Internet of Things communication module;

[0042] The central platform of the traffic light digital operation and maintenance system performs secondary diagnosis on the fault data through the fault review function module;

[0043] Step C, fault classification and data sharing, specifically: the signal light digital operation and maintenance system central platform will classify the confirmed signal light fault information, and share the faults classified as important faults to the key vehicle supervision system central platform through the data sharing function module;

[0044] Step D, sending fault warning information, specifically: the key vehicle supervision system central platform sends the received signal light fault information classified as the major fault to the video camera and / or vehicle terminal of the key vehicle traveling at the intersection above the intersection where the fault occurs, and performs at least two voice warnings, the first voice warning being performed at the intersection upstream of the fault intersection, and the second voice warning being performed approximately 150 meters before the stop line at the fault intersection;

[0045] Step E, collection and feedback of driving data of key vehicles, specifically: the central platform of the key vehicle supervision system collects the driving trajectory, driving speed and acceleration of the key vehicles that receive the voice warning from the time they receive the warning to the time they pass the fault intersection, providing a basic basis for the safety management of the key vehicles, and feeds back the driving trajectory, driving speed and acceleration to the central platform of the traffic light digital operation and maintenance system.

[0046] Beneficial effects of the present invention:

[0047] The present invention can realize cross-departmental sharing of traffic light fault data, effectively improve the vigilance of key vehicles driving at intersections during traffic light faults, reduce the possibility of major traffic accidents involving key vehicles, and improve the level of traffic safety at intersections.

[0048] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A logical diagram illustrating data transmission between various components in an embodiment of the present invention is shown.

[0050] Figure 2 A schematic diagram showing the arrangement of terminal equipment for automatic monitoring of signal light failures in one embodiment of the present invention.

[0051] Figure 3 A flowchart of an early warning process in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0052] Example

[0053] like Figure 1 and Figure 2 As shown, the cross-departmental signal light failure safety warning system includes a signal light digital operation and maintenance system center platform, a key vehicle supervision system center platform, and signal light failure automatic monitoring terminal equipment installed at each signal light at the intersection;

[0054] The traffic light digital operation and maintenance system center platform is deployed in the computer room of the public security traffic police department. It is used to receive real-time traffic light fault information uploaded by each traffic light automatic fault monitoring terminal device. It combines all traffic light fault information with geographic information data to match the intersection, lane direction, and specific traffic light where the fault occurred.

[0055] The central platform of the key vehicle supervision system is deployed in the transportation department's computer room. It is used to receive real-time video image information, vehicle location information, and speed information from video cameras and / or on-board terminals installed on key vehicles, and send voice information to the video cameras and / or on-board terminals to achieve remote supervision, early warning, and prompting functions. It also has the functions of receiving signal light fault data, early warning of signal light faults, and data feedback.

[0056] Each signal light fault automatic monitoring terminal device is deployed inside or outside the shell of the corresponding signal light at the intersection and is electrically connected to the corresponding signal light. It is used to automatically identify the signal light type, locate the signal light installation position, monitor the signal light for no signal output, monitor the signal light's constant light unit, monitor the abnormal extinction of the light unit, monitor the countdown missing section, monitor the abnormal yellow flash of the light unit, monitor the signal release conflict and monitor the deflection of the signal light body.

[0057] In certain embodiments, the traffic light digital operation and maintenance system center platform includes a fault automatic monitoring function module, a fault manual reporting function module, a fault review function module, a fault classification function module, and a data sharing function module;

[0058] The automatic fault monitoring function module is used to receive the signal light fault information obtained by each signal light fault automatic monitoring terminal device in real time;

[0059] Traffic light fault information includes traffic light type, traffic light installation location, signal machine no signal output monitoring information, traffic light light unit constant on monitoring information, traffic light unit abnormal off monitoring information, countdown missing segment monitoring information, traffic light unit abnormal yellow flash monitoring information, signal release conflict monitoring information and traffic light body deflection monitoring information;

[0060] The manual fault reporting module is used to receive descriptions, pictures, and videos related to traffic light faults from operation and maintenance personnel and the public through WeChat mini-programs, Alipay, and traffic police apps on mobile phones, and upload the descriptions, pictures, and videos related to traffic light faults to the central platform of the traffic light digital operation and maintenance system;

[0061] In practical applications, the manual fault reporting function module serves as a supplement to the signal light fault automatic monitoring terminal equipment.

[0062] The fault audit function module includes system intelligent audit;

[0063] System intelligent review refers to the manual review, which is a secondary confirmation of the description, pictures and video information related to the traffic light failure;

[0064] The fault classification function module is used to classify all signal light fault information into major faults and general faults based on vehicle driving safety;

[0065] Among them, major faults include traffic lights turning more than 45 degrees in the direction of the x-axis, y-axis or z-axis, traffic lights falling off, traffic lights with conflicting colors, traffic lights being black, traffic lights flashing yellow, and intersection manhole covers being lost;

[0066] Common faults include signal lights deflecting from 0° to 45° in the direction of the x-axis, y-axis, or z-axis, signal lights being damaged, and other faults other than major faults;

[0067] The data sharing function module is used to share the name of the intersection where the important fault occurs, lane direction, intersection longitude and latitude, signal light longitude and latitude, signal light phase of the intersection, important fault occurrence time, and important fault end time to the traffic light digital operation and maintenance system center platform for sharing.

[0068] In some embodiments, the fault review function module also includes manual review; manual review refers to manual secondary confirmation of the description, pictures and video information related to the traffic light fault.

[0069] In some embodiments, the process of system intelligent audit is as follows:

[0070] Step 1: Receive data measured by a turn detector of each signal light fault automatic monitoring terminal device in real time, and use the coordinate data of the corresponding signal light in a stationary state as the origin coordinates;

[0071] Step 2: Integrate the three-axis angular velocity data obtained by the corresponding steering detector to obtain the corresponding three-axis deflection angle. The specific calculation formula is as follows:

[0072]

[0073] Where t0 represents the initial time of measurement, which refers to the initial static time after the deflection fault on the corresponding steering detector is repaired; t i Indicates the end time of the measurement, i = 1, 2, 3, 4, ..., refers to the moment when the angular velocity changes to zero; ω xi 、ω yi 、ω zi Respectively represent the time interval [t i-1， t i ] angular velocity around the x-axis, y-axis and z-axis; θ x ,θy and θ z The absolute value of |θ x |、|θ y | and |θ z | respectively represent the deflection angles obtained by integrating the three-axis angular velocity;

[0074] Step 3: When the x, y, and z axis angular velocity data are all 0, the angle value obtained according to the integral formula is |θ x |、|θ y |、|θ z |The final deflection value of;

[0075] Step 4: Compare the final deflection value with the threshold. When the angle exceeds the threshold, it is confirmed that the signal light has a deflection fault.

[0076] In some embodiments, the signal light fault data receiving function refers to receiving signal light fault information sent by the signal light digital operation and maintenance system center platform;

[0077] Traffic light fault information includes the fault type and the name of the intersection where the fault occurs, lane direction, intersection latitude and longitude, signal light latitude and longitude, intersection signal light phase, occurrence time, and end time.

[0078] The signal light failure warning function is to issue a voice warning to key vehicles on the road that are about to drive to the corresponding direction of the intersection where the signal light failure occurs through the corresponding video camera and / or vehicle terminal;

[0079] The data feedback function is to feedback to the central platform of the traffic light digital operation and maintenance system the driving trajectory, driving speed and acceleration of key vehicles from the time they receive the voice warning to the time they pass the intersection where the traffic light failure occurs.

[0080] In some embodiments, the voice warning is issued at least twice, the first voice warning is issued at the upstream intersection of the fault intersection, and the second voice warning is issued about 150 meters before the stop line of the fault intersection.

[0081] In some embodiments, the traffic light digital operation and maintenance system center platform and the key vehicle supervision system center platform are connected via a dedicated line, have data interfaces with each other, and share and exchange data through security boundary devices.

[0082] In certain embodiments, each signal light fault automatic monitoring terminal device includes a main control unit, a data acquisition unit, and an Internet of Things communication module;

[0083] Each data acquisition unit includes a positioning system, a steering detector, a voltage detector, and a current detector;

[0084] Each steering detector is a three-axis gyroscope;

[0085] Each IoT communication module includes a wireless communication module and corresponding communication cards and communication services, or includes a wired communication module, which is connected to the traffic light digital operation and maintenance system center platform through the operator's 4G or 5G VPDN wireless communication or wired communication, and uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time.

[0086] In some embodiments, key vehicles include dangerous goods transport vehicles, long-distance passenger vehicles, tourist chartered vehicles, public buses and taxis, and the corresponding video cameras and / or on-board terminals are connected to the key vehicle supervision system central platform through the operator's 4G or 5G VPDN network to receive voice warnings from the key vehicle supervision system central platform.

[0087] like Figure 3 As shown, the cross-departmental traffic light failure safety warning method, which runs on the cross-departmental traffic light failure safety warning system, includes the following steps:

[0088] Step A, fault monitoring, specifically: using a signal light fault automatic monitoring terminal device to monitor in real time the current, voltage, and deflection data of the corresponding signal light light unit;

[0089] Step B, fault uploading, specifically: when a traffic light fails, the corresponding traffic light fault automatic monitoring terminal device uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time through the Internet of Things communication module;

[0090] The traffic light digital operation and maintenance system center platform conducts secondary diagnosis of fault data through the fault review function module;

[0091] Step C, fault classification and data sharing, specifically: the traffic light digital operation and maintenance system central platform will classify the confirmed traffic light fault information, and share the faults classified as important faults to the key vehicle supervision system central platform through the data sharing function module;

[0092] Step D, sending fault warning information, specifically: the key vehicle supervision system central platform sends the received signal light fault information classified as a major fault to the video camera and / or vehicle terminal of the key vehicle traveling at the intersection above the intersection where the fault occurred, and issues no less than two voice warnings, the first voice warning being issued at the intersection upstream of the fault intersection, and the second voice warning being issued approximately 150 meters before the stop line at the fault intersection;

[0093] Step E: Collection and feedback of driving data of key vehicles, specifically: the key vehicle supervision system central platform collects the driving trajectory, driving speed and acceleration of key vehicles that receive voice warnings from the time they receive the warning to the time they pass the fault intersection, providing a basic basis for the safety management and control of key vehicles, and feeds back the driving trajectory, driving speed and acceleration to the traffic light digital operation and maintenance system central platform.

[0094] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A cross-departmental signal light failure safety warning system; characterized by: It includes a central platform for the digital operation and maintenance of traffic lights, a central platform for the key vehicle supervision system, and automatic monitoring terminal equipment for traffic light faults installed at each traffic light at the intersection; The traffic light digital operation and maintenance system center platform is deployed in the computer room of the public security traffic police department, and is used to receive the traffic light fault information uploaded by each traffic light fault automatic monitoring terminal device in real time, and combine all the traffic light fault information with geographic information data to achieve matching of the intersection, lane direction, and specific traffic light where the fault occurred; The central platform of the key vehicle supervision system is deployed in the computer room of the transportation department and is used to receive video image information, vehicle driving position information and speed information from video cameras and / or on-board terminals installed on key vehicles in real time, and send voice information to the video cameras and / or on-board terminals to achieve remote supervision, early warning and prompting functions, and has the functions of receiving signal light fault data, early warning of signal light faults and data feedback; Each of the signal light fault automatic monitoring terminal devices is deployed inside or outside the shell of the corresponding signal light at the intersection, and is electrically connected to the corresponding signal light. They are all used to automatically identify the signal light type, locate the signal light installation position, monitor the signal light for no signal output, monitor the signal light's light unit is always on, monitor the light unit is abnormally off, monitor the countdown missing section, monitor the light unit for abnormal yellow flashing, monitor signal release conflicts and monitor the deflection of the signal light body.

2. The cross-departmental signal light failure safety warning system according to claim 1 is characterized in that: The central platform of the traffic light digital operation and maintenance system includes a fault automatic monitoring function module, a fault manual reporting function module, a fault review function module, a fault classification function module, and a data sharing function module; The automatic fault monitoring function module is used to receive the signal light fault information obtained by each signal light fault automatic monitoring terminal device in real time; The signal light fault information includes signal light type, signal light installation location, signal light no signal output monitoring information, signal light light unit constant light monitoring information, signal light unit abnormal extinguishing monitoring information, countdown missing segment monitoring information, signal light unit abnormal yellow flashing monitoring information, signal release conflict monitoring information and signal light body deflection monitoring information; The manual fault reporting module is used to receive descriptions, pictures, and videos related to traffic light faults from operation and maintenance personnel and the public through WeChat applets, Alipay, and traffic police apps on mobile phones, and upload the descriptions, pictures, and videos related to traffic light faults to the central platform of the traffic light digital operation and maintenance system; The fault audit function module includes system intelligent audit; The system intelligent review refers to the manual review, which refers to the manual secondary confirmation of the description, pictures and video information related to the traffic light failure; The fault classification function module is used to classify all the signal light fault information into major faults and general faults based on vehicle driving safety; Among them, the major faults include the signal light turning more than 45 degrees in the direction of the x-axis, y-axis or z-axis, the signal light falling, the signal light color conflict, the signal light being black, the signal light flashing yellow and the intersection manhole cover being lost; The general faults include the deflection of the signal light between 0° and 45° in the direction of the x-axis, y-axis or z-axis, the signal light being damaged, and other faults other than the major faults; The data sharing function module is used to share the name of the intersection where the important fault occurs, the lane direction, the longitude and latitude of the intersection, the longitude and latitude of the traffic light, the phase of the traffic light at the intersection, the time when the important fault occurs, and the time when the important fault ends to the traffic light digital operation and maintenance system center platform for sharing.

3. The cross-departmental signal light failure safety warning system according to claim 2 is characterized in that: The fault review function module also includes manual review; the manual review refers to manual secondary confirmation of the description, pictures and video information related to the traffic light fault.

4. The cross-departmental signal light failure safety warning system according to claim 2 is characterized in that: The process of the system intelligent audit is as follows: Step 1: receiving data measured by a turn detector of each of the signal light fault automatic monitoring terminal devices in real time, and using the coordinate data of the corresponding signal light in a stationary state as the origin coordinates; Step 2: Integrate the three-axis angular velocity data obtained by the steering detector to obtain the corresponding three-axis deflection angle. The specific calculation formula is as follows: Wherein, t0 represents the initial time of measurement, which refers to the initial static time after the deflection fault on the corresponding steering detector is repaired; t i Indicates the end time of the measurement, i = 1, 2, 3, 4, ..., refers to the moment when the angular velocity changes to zero; ω xi 、ω yi 、ω zi Respectively represent the time interval [t i-1， t i ] angular velocity around the x-axis, y-axis and z-axis; θ x ,θ y and θ z The absolute value of |θ x |、|θ y | and |θ z | respectively represent the deflection angles obtained by integrating the three-axis angular velocities; Step 3: When the x, y, and z axis angular velocity data are all 0, the angle value obtained according to the integral formula is |θ x |、|θ y |、|θ z |The final deflection value of; Step 4: Compare the final deflection value with a threshold value. When the angle exceeds the threshold value, it is confirmed that the signal light has a deflection fault.

5. The cross-departmental signal light failure safety warning system according to claim 1 is characterized in that: The signal light fault data receiving function is to receive the signal light fault information sent by the signal light digital operation and maintenance system central platform; The signal light fault information includes the fault type and the name of the intersection where the fault occurs, lane direction, intersection longitude and latitude, signal light longitude and latitude, intersection signal light phase, occurrence time, and end time. The signal light failure warning function is to issue a voice warning to the key vehicles on the road that are about to drive to the corresponding direction of the intersection where the signal light failure occurs through the corresponding video camera and / or vehicle terminal; The data feedback function is to feed back to the central platform of the traffic light digital operation and maintenance system the driving trajectory, driving speed and acceleration of the key vehicle from receiving the voice warning to passing the intersection where the traffic light failure occurs.

6. The cross-departmental signal light failure safety warning system according to claim 5 is characterized in that: The voice warning is made at least twice, the first voice warning is made at the upstream intersection of the fault intersection, and the second voice warning is made about 150 meters before the stop line of the fault intersection.

7. The cross-departmental signal light failure safety warning system according to claim 1 is characterized in that: The traffic light digital operation and maintenance system center platform and the key vehicle supervision system center platform are connected via a dedicated line, have data interfaces with each other, and share and exchange data through security boundary equipment.

8. The cross-departmental signal light failure safety warning system according to claim 1 is characterized in that: Each of the signal light fault automatic monitoring terminal devices includes a main control unit, a data acquisition unit and an Internet of Things communication module; Each of the data acquisition units includes a positioning system, a direction detector, a voltage detector and a current detector; Each of the steering detectors is a three-axis gyroscope; Each of the IoT communication modules includes a wireless communication module and corresponding communication cards and communication services, or includes a wired communication module, which is connected to the traffic light digital operation and maintenance system center platform through the operator's 4G or 5G VPDN wireless communication or wired communication, and uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time.

9. The cross-departmental signal light failure safety warning system according to claim 1 is characterized in that: The key vehicles include dangerous goods transport vehicles, long-distance passenger vehicles, tourist chartered vehicles, public buses and taxis. The corresponding video cameras and / or vehicle-mounted terminals are connected to the key vehicle supervision system central platform through the operator's 4G or 5G VPDN network to receive voice warnings from the key vehicle supervision system central platform.

10. A cross-departmental signal light failure safety warning method, characterized in that: The cross-departmental signal light failure safety warning system according to any one of claims 1 to 9 comprises the following steps: Step A, fault monitoring, specifically: using a signal light fault automatic monitoring terminal device to monitor in real time the current, voltage, and deflection data of the corresponding signal light light unit; Step B, fault uploading, specifically: when a traffic light fails, the corresponding traffic light fault automatic monitoring terminal device uploads the monitored traffic light fault information to the traffic light digital operation and maintenance system center platform in real time through the Internet of Things communication module; The central platform of the traffic light digital operation and maintenance system performs secondary diagnosis on the fault data through the fault review function module; Step C, fault classification and data sharing, specifically: the signal light digital operation and maintenance system central platform will classify the confirmed signal light fault information, and share the faults classified as important faults to the key vehicle supervision system central platform through the data sharing function module; Step D, sending fault warning information, specifically: the key vehicle supervision system central platform sends the received signal light fault information classified as the major fault to the video camera and / or vehicle terminal of the key vehicle traveling at the intersection above the intersection where the fault occurs, and performs at least two voice warnings, the first voice warning being performed at the intersection upstream of the fault intersection, and the second voice warning being performed approximately 150 meters before the stop line at the fault intersection; Step E, collection and feedback of driving data of key vehicles, specifically: the central platform of the key vehicle supervision system collects the driving trajectory, driving speed and acceleration of the key vehicles that receive the voice warning from the time they receive the warning to the time they pass the fault intersection, providing a basic basis for the safety management of the key vehicles, and feeds back the driving trajectory, driving speed and acceleration to the central platform of the traffic light digital operation and maintenance system.

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