A multi-mode yellow flashing warning signal light for railway crossings

Abstract

This invention relates to the technical field of railway crossing safety warning equipment, and discloses a multi-mode yellow flashing warning signal light for railway crossings. The light includes a column, with multiple indicator lights mounted on its outer wall. A control box is fixedly mounted on the outer wall of the column, and a solar panel is fixedly mounted on the upper surface of the control box. The solar panel is fixedly connected to a converter via an external connection cable, and the converter is fixedly connected to an independent power supply via the same external connection cable. A water inlet tank is fixedly connected to the outer wall of each indicator light, and a suspended ball is installed inside the water inlet tank. Multiple limiting rods are slidably connected inside the suspended ball, and multiple magnetic blocks are fixedly connected to the upper surface of the suspended ball. By sliding a baffle, the ventilation holes inside the control box are adaptively sealed, preventing external moisture from entering the control box and damaging the internal electronic components.

Description

Technical Field

[0001] This invention relates to the technical field of railway crossing safety warning equipment, specifically a multi-mode yellow flashing warning signal light for railway crossings. Background Technology

[0002] Railway crossing warning lights are specialized audio-visual signal devices installed at level crossings where railways and roads intersect, facing the road. They typically consist of two red lights, installed in a prominent position on the right side of the crossing. When a train approaches, the two red lights automatically flash alternately, accompanied by an alarm sound, prohibiting vehicles and pedestrians from crossing. Once the train has completely passed, the flashing stops, the red lights go out, and passage is permitted. The equipment often uses LED light sources and is equipped with solar power. In case of malfunction, a stable red light will illuminate or manual operation will be required. It is a key facility for ensuring the safety of level crossings.

[0003] Most conventional railway crossing warning lights on the market currently use a fixed flashing mode and are powered by mains electricity. It is difficult to dynamically adjust the warning intensity according to actual scenarios such as the approach of trains, environmental visibility, and the risk of pedestrians and vehicles entering. The warning effect and scenario adaptability are insufficient. At the same time, these devices are exposed to the outdoor environment for a long time. In rainy weather, especially heavy rain, rainwater can easily seep in through the ventilation holes of the control box, causing the internal circuits and electronic components to become damp, short-circuit, and damaged, affecting the stable operation of the equipment. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-mode yellow flashing warning signal light for railway crossings, which solves at least one of the problems mentioned in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-mode yellow flashing warning signal light for railway crossings, comprising a column, multiple indicator lights mounted on the outer wall of the column, a control box fixedly mounted on the outer wall of the column, a solar panel fixedly mounted on the upper surface of the control box, a converter fixedly connected to the solar panel via an external connection line, an independent power supply fixedly connected to the converter via an external connection line, a water inlet tank fixedly connected to the outer wall of the indicator lights, a suspended ball installed inside the water inlet tank, multiple limiting rods slidably connected inside the suspended ball, multiple magnetic blocks I fixedly connected to the upper surface of the suspended ball, magnetic blocks II slidably connected to the outer wall of the limiting rods, with magnetic blocks II and magnetic blocks I facing each other and repelling each other magnetically, an air guiding assembly sleeved on the outer wall of the limiting rods, the air guiding assembly including an airbag, an air inlet pipe fixedly connected to the inside of the airbag via an external air guiding pipe, a lifting assembly mounted on the outer wall of the air inlet pipe, the lifting assembly including a piston rod, a baffle fixedly connected to the top of the piston rod.

[0006] Preferably, the air guiding assembly further includes a sleeve rod, the inside of which is slidably connected to the outer wall of the limiting rod, the top end of which is attached to the lower surface of the airbag, a fixing post is fixedly provided on the outer wall of the airbag, the outer wall of the sleeve rod is slidably connected to the inside of the fixing post, and the upper surface of the second magnetic block is attached to the bottom end of the sleeve rod.

[0007] Preferably, the lifting assembly further includes a piston cylinder, the outer wall of the air intake pipe is fixedly disposed at the bottom end of the piston cylinder, and the outer wall of the piston rod is slidably connected to the inside of the piston cylinder.

[0008] Preferably, a sensor is fixedly mounted on the upper surface of the baffle, a controller is attached to the upper surface of the sensor, the outer wall of the controller is fixedly mounted inside the indicator light, the controller is fixedly connected to a heat sink via an external connection, the heat sink is fixedly mounted on the inner bottom wall of the indicator light, and the heat sink is fixedly connected to the inside of an independent power supply via an external connection line.

[0009] Preferably, the outer wall of the converter is fixedly connected to the inner wall of the indicator light, the lower surface of the independent power supply is fixedly connected to the inner bottom wall of the indicator light, the interior of the first magnetic block is slidably connected to the outer wall of the limiting rod, and the outer wall of the baffle is slidably connected to the interior of the indicator light.

[0010] Preferably, a multi-mode flashing yellow warning signal light control system for railway crossings, used for a multi-mode flashing yellow warning signal light at railway crossings, includes:

[0011] The sensing module is used to collect environmental and traffic situation information in the crossing area;

[0012] The control module, connected to the sensing module, is used to calculate the dynamic risk value based on the information collected by the sensing module through a hierarchical decision tree state machine, and generate corresponding yellow flashing warning parameter combination control commands.

[0013] The drive execution module, connected to the control module and the yellow flashing warning light, is used to drive the yellow flashing warning light to operate with dynamic brightness, flashing frequency and flashing duty cycle according to the control command. The system is configured to be integrated into the existing level crossing signal in a modular form.

[0014] Preferably, the sensing module includes a miniature weather station, a low-power millimeter-wave radar array, and a wide-angle intelligent vision sensor;

[0015] The micro weather station is used to monitor environmental visibility and precipitation.

[0016] The low-power millimeter-wave radar array is used to detect the distance, speed, and trajectory of targets within the crossing area;

[0017] The wide-angle intelligent vision sensor is used to identify the type of target and the congestion status of the crossing;

[0018] The data from the millimeter-wave radar array and the wide-angle intelligent vision sensor are fused together to form the traffic situation information.

[0019] Preferably, the control module includes a hierarchical decision tree state machine, which executes the following decision logic:

[0020] The first level of decision-making is based on the train approach signal triggering the highest level of warning;

[0021] The second layer of decision-making integrates environmental visibility, trajectory risk score of intruding targets in the crossing area, and crossing congestion index to calculate real-time dynamic risk values.

[0022] The third-level decision-making process dynamically generates a combination of yellow flashing warning parameters, including brightness coefficient, basic flashing frequency, and duty cycle, based on the dynamic risk value and environmental visibility.

[0023] When a target is detected approaching at high speed or a pedestrian is detected loitering, the control module generates a frequency-modulated pulse control command that superimposes a time-decayed pulse increment on the base flash frequency.

[0024] Preferably, the drive execution module includes a programmable constant current LED drive circuit, used to accurately execute the control command, and control the yellow flashing warning light to achieve continuous brightness adjustment, frequency conversion pulse flashing and asymmetric duty cycle flashing by adjusting the current magnitude and PWM waveform.

[0025] Preferably, the sensor housing, the control module, and the drive execution module in the sensing module have a protection rating of not less than IP67, their internal circuit boards are coated with conformal coating, and a heat-conducting structure is provided to conduct the heat of the main control chip to the housing.

[0026] Working principle: The solar panel absorbs sunlight, which is then converted into electrical energy by a converter and stored in an independent power source to power the indicator lights and loudspeakers on the outside of the column. During rainy days, rainwater flows into the water inlet tank. When the rain is heavy, the water inlet tank accumulates, and the buoyancy of the accumulated water causes the suspended ball to move upward along the limit rod, which in turn causes the connected magnetic block one to rise. Through the repulsion of like poles, magnetic block two is further pushed up. Magnetic block two touches the air guide component and generates gas. The gas is sent into the air inlet pipe through the air guide pipe, which drives the piston rod of the lifting component to move upward, causing the baffle to slide inside the control box. This achieves the effect of adaptively sealing the ventilation holes of the control box, preventing rainwater from seeping in and damaging the internal electronic components.

[0027] This invention provides a multi-mode flashing yellow warning signal light for railway crossings. It has the following beneficial effects:

[0028] 1. This invention achieves adaptive sealing of the ventilation holes inside the control box by sliding the baffle, thereby preventing external moisture from entering the control box and damaging the internal electronic components.

[0029] 2. The cooperation between the sensor, controller, and radiator in this invention enables the radiator to automatically open and dissipate heat from the inside of the control box when the baffle completely seals the vent on the side of the control box, ensuring that the internal temperature of the control box is always at a suitable threshold. At the same time, it also enables the radiator to automatically shut off when the baffle does not completely seal the vent on the side of the control box. In this case, the power stored in the independent power supply will fully supply the indicator lights and the loudspeaker, thus avoiding power waste.

[0030] 3. This invention fundamentally solves the problem of insufficient warning effect of traditional white lights by replacing the yellow light and dynamically adjusting the brightness, flashing mode and frequency of the warning light according to various factors such as real-time weather, traffic flow and pedestrian behavior. It upgrades the warning from fixed and passive to dynamic and active, greatly improving the warning effect for pedestrians and vehicle drivers and ensuring the safety of intersections.

[0031] 4. This invention, by designing the entire system based on a modular approach, enables the modification of existing traffic lights, effectively controlling costs and facilitating maintenance. It achieves a functional leap simply by adding an intelligent control box and sensors, and possesses the economic benefits and engineering convenience for large-scale promotion.

[0032] 5. By adopting IP67 protection, conformal coating, and thermal conductivity design, this invention ensures the long-term stable operation of the overall control equipment in the harsh environment of the level crossing. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0034] Figure 2 This is a partial structural diagram of the column of the present invention;

[0035] Figure 3 This is a partial structural diagram of the control box of the present invention;

[0036] Figure 4 This is a partial structural diagram of the solar panel of the present invention;

[0037] Figure 5 This is a partial structural diagram of the suspended sphere of the present invention;

[0038] Figure 6 This is a partial structural diagram of the airbag of the present invention;

[0039] Figure 7This is a schematic diagram of a partial structure of the intake pipe of the present invention;

[0040] Figure 8 This is a schematic diagram of the overall system architecture and deployment of the present invention.

[0041] The components include: 1. Column; 2. Indicator light; 3. Control box; 4. Converter; 5. Independent power supply; 6. Water inlet tank; 7. Suspension ball; 8. Magnetic block one; 9. Limiting rod; 10. Magnetic block two; 11. Air guide assembly; 111. Sleeve rod; 112. Fixing column; 113. Airbag; 12. Air inlet pipe; 13. Lifting assembly; 131. Piston cylinder; 132. Piston rod; 14. Baffle; 15. Induction probe; 16. Controller; 17. Radiator; 18. Solar panel. Detailed Implementation

[0042] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see the appendix Figure 1 - Appendix Figure 7 This invention provides a multi-mode yellow flashing warning signal light for railway crossings, including a column 1. Multiple indicator lights 2 are installed on the outer wall of the column 1. A control box 3 is fixedly installed on the outer wall of the column 1. A solar panel 18 is fixedly installed on the upper surface of the control box 3. The solar panel 18 is fixedly connected to a converter 4 via an external connection cable. The converter 4 is fixedly connected to an independent power supply 5 via an external connection cable. A water inlet tank 6 is fixedly connected to the outer wall of the indicator lights 2. A suspended ball 7 is installed inside the water inlet tank 6. A sliding connection is made inside the suspended ball 7. Multiple limiting rods 9, multiple magnetic blocks 8 are fixedly connected to the upper surface of the levitation ball 7, and magnetic blocks 10 are slidably connected to the outer wall of the limiting rods 9. The magnetic blocks 10 and magnetic blocks 8 are magnetically repelled on opposite sides. An air guiding assembly 11 is sleeved on the outer wall of the limiting rods 9. The air guiding assembly 11 includes an airbag 113. An air inlet pipe 12 is fixedly connected to the inside of the airbag 113 through an external air guiding pipe. A lifting assembly 13 is installed on the outer wall of the air inlet pipe 12. The lifting assembly 13 includes a piston rod 132. A baffle 14 is fixedly connected to the top of the piston rod 132.

[0044] Specifically, when the weather is good, the solar panel 18 absorbs sunlight and converts it into electricity via the converter 4, which is then supplied to the independent power supply 5. The independent power supply 5 provides real-time power to the multiple indicator lights 2 and the loudspeaker installed on the outside of the column 1. When the weather is rainy, rainwater enters the water inlet tank 6. The bottom of the water inlet tank 6 has multiple small through holes. When the rain is heavy, the rainwater accumulates inside the water inlet tank 6. The buoyancy of the water causes the suspended ball 7 to slide upwards on the outer wall of the limit rod 9. As the suspended ball 7 slides upwards, the fixing action of the suspended ball 7 and the first magnetic block 8 causes the first magnetic block 8 to move upwards synchronously. At this time, the first magnetic block 8 and the second magnetic block 10... When the magnetic forces on opposite sides repel each other, the magnetic block 10 will slide upward on the outer wall of the limiting rod 9. After sliding upward for a period of time, the magnetic block 10 will come into contact with the air guiding component 11, which will then generate gas and deliver the gas to the air inlet pipe 12 through the external air guiding pipe. This will further push the piston rod 132 upward. When the piston rod 132 moves upward, the fixing action of the piston rod 132 and the baffle 14 will cause the baffle 14 to slide upward inside the control box 3. This will enable the baffle 14 to automatically seal the ventilation holes inside the control box 3 during heavy rain, preventing external moisture from entering the control box 3 and damaging the internal electronic components.

[0045] Please see the appendix Figure 5 and attached Figure 6 The air guiding assembly 11 also includes a sleeve rod 111. The inside of the sleeve rod 111 is slidably connected to the outer wall of the limiting rod 9. The top end of the sleeve rod 111 is attached to the lower surface of the airbag 113. A fixing post 112 is fixedly provided on the outer wall of the airbag 113. The outer wall of the sleeve rod 111 is slidably connected to the inside of the fixing post 112. The upper surface of the magnetic block 10 is attached to the bottom end of the sleeve rod 111.

[0046] Specifically, when the sleeve 111 slides upward inside the fixed post 112, it compresses the airbag 113 installed inside the fixed post 112, and the gas generated by compressing the airbag 113 is transported to the air intake pipe 12 through the external air guide pipe.

[0047] Please see the appendix Figure 5 and attached Figure 6The lifting assembly 13 also includes a piston cylinder 131, with the outer wall of the air intake pipe 12 fixedly disposed at the bottom end of the piston cylinder 131, and the outer wall of the piston rod 132 slidably connected to the inside of the piston cylinder 131; a sensing probe 15 is fixedly disposed on the upper surface of the baffle 14, and a controller 16 is attached to the upper surface of the sensing probe 15, with the outer wall of the controller 16 fixedly disposed inside the indicator light 2, and a radiator 17 is fixedly connected to the controller 16 via an external connection, with the radiator 17 fixedly disposed on the inner bottom wall of the indicator light 2, and the radiator 17 fixedly connected to the inside of the independent power supply 5 via an external connection line; the outer wall of the converter 4 is fixedly connected to the inner wall of the indicator light 2, the lower surface of the independent power supply 5 is fixedly connected to the inner bottom wall of the indicator light 2, the inside of the magnetic block 8 is slidably connected to the outer wall of the limit rod 9, and the outer wall of the baffle 14 is slidably connected to the inside of the indicator light 2.

[0048] Specifically, the intake pipe 12 has multiple vent holes inside the end near the piston rod 132 to deliver the gas generated by the compressed air bag 113 into the piston cylinder 131, thereby pushing the piston rod 132 to slide upward inside the piston cylinder 131. As the piston rod 132 slides upward, it also drives the baffle 14 and the sensing probe 15 fixed on its upper surface to slide upward synchronously. When the sensing probe 15 continues to slide upward and contacts the controller 16, it indicates that the baffle 14 has completely sealed the vent holes on the side of the control box 3. At this time, the controller 16 sends a signal to the radiator 17 to control the radiator 17. When activated, the hot air inside the control box 3 is exhausted from the bottom of the control box 3 through the radiator 17. Through the cooperation between the sensor 15, the controller 16 and the radiator 17, the radiator 17 is automatically activated to dissipate heat from the inside of the control box 3 when the baffle 14 completely seals the vent on the side of the control box 3, ensuring that the internal temperature of the control box 3 is always at a suitable threshold. At the same time, when the baffle 14 does not completely seal the vent on the side of the control box 3, the radiator 17 is automatically shut off. At this time, the power stored in the independent power supply 5 is fully supplied to the indicator light 2 and the loudspeaker, avoiding power waste.

[0049] Please see the appendix Figure 8 A multi-mode flashing yellow warning signal light control system for railway crossings, used for a multi-mode flashing yellow warning signal light at railway crossings, comprising:

[0050] The sensing module is used to collect environmental and traffic situation information in the crossing area;

[0051] The control module, connected to the sensing module, is used to calculate the dynamic risk value based on the information collected by the sensing module through a hierarchical decision tree state machine, and generate corresponding yellow flashing warning parameter combination control commands.

[0052] The drive execution module, connected to the control module and the yellow flashing warning light, is used to drive the yellow flashing warning light to work with dynamic brightness, flashing frequency and flashing duty cycle according to control commands. The system is configured to be integrated into the existing level crossing signal in a modular form.

[0053] Specifically, the system hardware consists of a sensing module, a control module, and a drive execution module. The sensing module, control module, and drive execution module are physically integrated into an independent control unit. The sensing module includes a miniature weather station, a low-power millimeter-wave radar array, and a wide-angle intelligent vision sensor. The control module includes a main control processor and a data storage unit connected to it. The drive execution module includes a programmable constant current LED drive circuit. The miniature weather station is deployed on an unobstructed pillar near the crossing area. The low-power millimeter-wave radar array consists of two radar sensors, which are deployed on the crossbars on both sides of the crossing. Their detection beams cover the entire crossing area and the approach areas on both sides. The wide-angle intelligent vision sensor is deployed on the top of a pillar on one side of the crossing, and its field of view covers the entire crossing area. The protective housing integrating the control module and drive execution module is deployed in an equipment box or on a dedicated pole near the level crossing. A medium-sized weather station connects to the main control processor of the control module via an RS-485 communication interface. A low-power millimeter-wave radar array connects to the main control processor via an Ethernet interface. A wide-angle intelligent vision sensor connects to the main control processor via an Ethernet interface. The main control processor connects to the programmable constant-current LED driver circuit of the drive execution module via an SPI bus. The programmable constant-current LED driver circuit of the drive execution module is connected to the existing yellow flashing warning light group at the level crossing via a power line. Inside the protective housing, the main control processor and the programmable constant-current LED driver circuit are mounted on the same main printed circuit board. This printed circuit board is connected to a waterproof aviation connector on the outside of the protective housing via wires, enabling integration with existing level crossing facilities. The system obtains its working power from the power distribution box of the existing level crossing signal. The system's control module connects to the train approach signal output from the existing track circuit or axle counter equipment through a digital input interface. The output of the system's drive execution module is connected to the disconnection point of the drive line of the yellow flashing warning light group to be upgraded in the existing level crossing signal, thereby replacing the original drive circuit and independently controlling the yellow flashing warning light group.

[0054] Please see the appendix Figure 8 The sensing module includes a miniature weather station, a low-power millimeter-wave radar array, and a wide-angle intelligent vision sensor;

[0055] Miniature weather stations are used to monitor environmental visibility and precipitation;

[0056] Low-power millimeter-wave radar arrays are used to detect the distance, speed, and trajectory of targets within the crossing area;

[0057] Wide-angle intelligent vision sensors are used to identify the type of target and the congestion status of intersections;

[0058] Data from millimeter-wave radar arrays and wide-angle intelligent vision sensors are fused together to form traffic situation information.

[0059] Specifically, the sensor probes of the mini weather station are deployed near the road crossing area, on pillars 3-5 meters above the ground to avoid obstruction. The mini weather station has a built-in visibility meter and rain gauge, and sends data frames containing visibility values ​​to the control module once per second via an RS-485 interface. and precipitation The low-power millimeter-wave radar array consists of a first radar sensor and a second radar sensor. The first and second radar sensors are deployed on crossbars on both sides of the level crossing, at a height of 5-6 meters, arranged symmetrically relative to the center of the crossing. The fields of view of the two radar sensors overlap in the central area of ​​the crossing, achieving blind-spot-free coverage. Simultaneously, they output target point cloud data, with each data point containing distance information. Azimuth radial velocity and timestamp Furthermore, the main control processor of the control module receives point cloud data from the millimeter-wave radar array and target recognition data from the wide-angle intelligent vision sensor, and performs spatiotemporal registration and target association, unifying the radar data and visual data to the same coordinate system and the same time reference. radar points Its conversion to Cartesian coordinates :

[0060] ;

[0061] ;

[0062] in, Indicates the radial distance of the target relative to the radar. Indicates the azimuth of the target, for the same time. Below, the converted radar point cloud targets Visual recognition target To perform a match, when the spatial coordinates of the two are far apart... Less than the set threshold If the match is successful:

[0063] ;

[0064] Upon successful matching, the target is assigned a unique identifier ID, and its status information is merged into... ,in and Radial velocity via radar and azimuth The velocity components of the target in the Cartesian coordinate system are obtained from the decomposition. Then, the control module performs analysis on each tracked target with an ID, based on its continuous position. Calculate the movement trajectory and assess the overall condition of the intersection area. Calculate the intersection congestion index. The crossing area is divided into The statistics are in the grid number 1. Within each sampling period, the grid The number of frames containing the target The occupancy rate of this grid. :

[0065] ;

[0066] in, The level crossing congestion index is the total number of frames within the sampling period. The average of all grid occupancy rates:

[0067] ;

[0068] Ultimately, the traffic situation information output by the perception module is a set of data structures, with each data unit corresponding to a tracked target, including target ID, type T, and current location. ,speed Motion trajectory point sequence and the congestion index, which characterizes the overall condition of the intersection. And send it to the decision logic unit of the control module.

[0069] Please see the appendix Figure 8 The control module includes a hierarchical decision tree state machine, which executes the following decision logic:

[0070] The first level of decision-making is based on the train approach signal triggering the highest level of warning;

[0071] The second layer of decision-making integrates environmental visibility, trajectory risk score of intruding targets in the crossing area, and crossing congestion index to calculate real-time dynamic risk values.

[0072] The third-level decision-making is based on dynamic risk values ​​and environmental visibility, dynamically generating a combination of yellow flashing warning parameters including brightness coefficient, basic flashing frequency, and duty cycle;

[0073] When a target is detected approaching at high speed or a pedestrian is lingering, the control module generates a variable frequency pulse control command that superimposes a pulse increment with a certain time decay on the basic flashing frequency; the drive execution module includes a programmable constant current LED drive circuit, which is used to accurately execute the control command. By adjusting the current magnitude and PWM waveform, it controls the yellow flashing warning light to achieve continuous brightness adjustment, variable frequency pulse flashing, and asymmetric duty cycle flashing.

[0074] Specifically, the control module consists of a main control processor and a data storage unit. It initializes and receives input data, and the main control processor (b1) runs hierarchical decision tree state machine software. The main control processor receives traffic situation information from the sensing module and visibility values ​​from the micro-weather station. Receive train approach signs from the existing track circuit signal interface at the level crossing. ,in This is a Boolean value, where 1 indicates that a train is approaching and 0 indicates that no train is approaching. If the value equals 1, the decision-making status enters the highest level of alert, and the basic alert level for this decision-making cycle is immediately adjusted. Set to the highest level .like If it equals 0, then Set to normal level Subsequently, the main control processor uses the traffic situation information and visibility values ​​input from the sensing module. Calculate dynamic risk value Specifically, this involves calculating the environmental visibility factor. , Based on visibility value The coefficients obtained from the mapping are between 0.7 and 1.5. The mapping function is a piecewise linear function and is stored in a lookup table in the data storage unit. When When less than 100 meters, It is 1.5; when When the distance is greater than 1000 meters, It is 0.7; when At a distance between 100 and 1000 meters, The risk score decreases linearly from 1.5 to 0.7. For the traffic situation information, the first The main control processor tracks the target based on its latest motion trajectory points. and speed Predicting its future Position within seconds :

[0075] ;

[0076] ;

[0077] The shortest distance from the predicted location to the boundary of the center area of ​​the crossing is calculated. The trajectory risk score of the target Depend on The mapping is obtained when Less than the preset safe distance threshold hour, It is 1.0; when Greater than When it is twice the size, =0; when When it is in between, Decrease linearly from 1.0 to 0. Global trajectory risk score. Take from all current targets The maximum value. Further, the current intersection congestion index is calculated and output directly using the sensing module. Its value is between 0 and 1, and it is a composite dynamic risk value. :

[0078] ;

[0079] in, To determine the basic warning level, The value is 1.0. The value is 0.3. The preset weighting coefficients satisfy... The main control processor determines the final warning parameters, including the target brightness, based on dynamic risk values ​​and visibility factors, through table lookup or calculation. Basic flash frequency and flash duty cycle :

[0080] ;

[0081] in, and These are the lower and upper limits of the programmable brightness range for the yellow flashing warning light (e). It is a dynamic risk value The achievable maximum value. Base flash frequency. Depend on The value is determined by looking up a table, when At 0.5, 30 times / minute; when 0.5 At 1.5 o'clock, 60 times / minute; when At 1.5 o'clock, 90 flashes per minute. The flash duty cycle D is determined by the visibility factor. Decision. When At 1.2, the bright-long, dark-short mode is used, and D is set to 70%; when At step 1.2, a symmetrical flashing mode is adopted, with D set to 50%. Subsequently, the main control processor checks traffic situation information; if any target is present, its trajectory risk score is calculated. It remains above the threshold for three consecutive decision-making cycles. If a high-risk event is detected, a frequency converter pulse is triggered, and the frequency converter pulse increment is determined. :

[0082] ;

[0083] in, The moment the event is triggered. For the current moment, The initial amplitude of the pulse. The attenuation coefficient is given. The instantaneous flash frequency F is:

[0084] ;

[0085] The main control processor encapsulates the final set of parameters into control command frames and sends them to the driver execution module via the SPI communication interface.

[0086] Please see the appendix Figure 8 The sensor housing, control module, and drive execution module in the sensing module have a protection rating of no less than IP67. The internal circuit board is coated with conformal coating and has a heat-conducting structure to transfer the heat of the main control chip to the housing.

[0087] Specifically, the system is designed as a modular control unit, which is easy to connect to existing level crossing signals. All key components are IP67 protected, the circuit boards are coated with conformal coating, and a heat-conducting structure is provided to ensure heat dissipation. This enables the fixed warnings to be upgraded to adaptive dynamic warnings, significantly improving the warning effect and attention. At the same time, through modular transformation and system-level protection design, the feasibility, economy and long-term reliability of intelligent upgrades are realized.

[0088] Working process: The air intake pipe 12 has multiple vents, which can send the gas generated by the compression of the airbag 113 into the piston cylinder 131, pushing the piston rod 132 to move upward in the piston cylinder 131. The upward movement of the piston rod 132 simultaneously drives the baffle 14 and the sensing probe 15 fixed above it to move upward together. When the sensing probe 15 touches the controller 16, it means that the baffle 14 has completely closed the vent on the side of the control box 3. The controller 16 then triggers the radiator 17 to work, exhausting the hot air inside the control box 3 from the bottom for heat dissipation. Relying on the linkage of the sensing probe 15, the controller 16 and the radiator 17, the radiator 17 can be automatically started to maintain a constant temperature when the vent is completely closed, and the radiator 17 can be automatically turned off when the vent is not completely closed, so that all the power of the independent power supply 5 can be supplied to the indicator light 2 and the loudspeaker, thereby achieving the effect of effectively saving power.

[0089] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-mode yellow flashing warning signal light for railway crossings, comprising a post (1), characterized in that: Multiple indicator lights (2) are installed on the outer wall of the column (1). A control box (3) is fixedly installed on the outer wall of the column (1). A solar panel (18) is fixedly installed on the upper surface of the control box (3). A converter (4) is fixedly connected to the solar panel (18) via an external connection line. An independent power supply (5) is fixedly connected to the converter (4) via an external connection line. A water inlet tank (6) is fixedly connected to the outer wall of the indicator lights (2). A floating ball (7) is installed inside the water inlet tank (6). Multiple limit rods (9) are slidably connected inside the floating ball (7). The upper surface of the floating ball (7) Multiple magnetic blocks (8) are fixedly connected to the surface of the limiting rod (9). Magnetic blocks (10) are slidably connected to the outer wall of the limiting rod (9). Magnetic blocks (10) and magnetic blocks (8) are magnetically repelled on opposite sides. An air guiding assembly (11) is sleeved on the outer wall of the limiting rod (9). The air guiding assembly (11) includes an airbag (113). An air inlet pipe (12) is fixedly connected to the inside of the airbag (113) through an external air guiding pipe. A lifting assembly (13) is installed on the outer wall of the air inlet pipe (12). The lifting assembly (13) includes a piston rod (132). A baffle (14) is fixedly connected to the top of the piston rod (132).

2. The multi-mode yellow flashing warning signal light for railway crossings according to claim 1, characterized in that: The air guiding assembly (11) also includes a sleeve (111), the inside of which is slidably connected to the outer wall of the limiting rod (9), the top end of which is attached to the lower surface of the airbag (113), a fixing post (112) is fixedly provided on the outer wall of the airbag (113), the outer wall of which is slidably connected to the inside of the fixing post (112), and the upper surface of the magnetic block two (10) is attached to the bottom end of the sleeve (111).

3. A multi-mode flashing yellow warning signal light for railway crossings according to claim 1, characterized in that: The lifting assembly (13) also includes a piston cylinder (131), the outer wall of the air inlet pipe (12) is fixedly disposed at the bottom end of the piston cylinder (131), and the outer wall of the piston rod (132) is slidably connected to the inside of the piston cylinder (131).

4. A multi-mode yellow flashing warning signal light for railway crossings according to claim 1, characterized in that: A sensor (15) is fixedly installed on the upper surface of the baffle (14). A controller (16) is attached to the upper surface of the sensor (15). The outer wall of the controller (16) is fixedly installed inside the indicator light (2). The controller (16) is connected to a heat sink (17) via an external connection. The heat sink (17) is fixedly installed on the inner bottom wall of the indicator light (2). The heat sink (17) is fixedly connected to the inside of the independent power supply (5) via an external connection line.

5. A multi-mode yellow flashing warning signal light for railway crossings according to claim 1, characterized in that: The outer wall of the converter (4) is fixedly connected to the inner wall of the indicator light (2), the lower surface of the independent power supply (5) is fixedly connected to the inner bottom wall of the indicator light (2), the interior of the magnetic block (8) is slidably connected to the outer wall of the limiting rod (9), and the outer wall of the baffle (14) is slidably connected to the interior of the indicator light (2).

6. A multi-mode yellow flashing warning signal light control system for railway crossings, characterized in that, For a multi-mode flashing yellow warning signal light at a railway crossing, including: The sensing module is used to collect environmental and traffic situation information in the crossing area; The control module, connected to the sensing module, is used to calculate the dynamic risk value based on the information collected by the sensing module through a hierarchical decision tree state machine, and generate corresponding yellow flashing warning parameter combination control commands. The drive execution module, connected to the control module and the yellow flashing warning light, is used to drive the yellow flashing warning light to operate with dynamic brightness, flashing frequency and flashing duty cycle according to the control command. The system is configured to be integrated into the existing level crossing signal in a modular form.

7. A multi-mode yellow flashing warning signal light control system for railway crossings according to claim 6, characterized in that, The sensing module includes a miniature weather station, a low-power millimeter-wave radar array, and a wide-angle intelligent vision sensor. The micro weather station is used to monitor environmental visibility and precipitation. The low-power millimeter-wave radar array is used to detect the distance, speed, and trajectory of targets within the crossing area; The wide-angle intelligent vision sensor is used to identify the type of target and the congestion status of the crossing; The data from the millimeter-wave radar array and the wide-angle intelligent vision sensor are fused together to form the traffic situation information.

8. A multi-mode yellow flashing warning signal light control system for railway crossings according to claim 6, characterized in that, The control module includes a hierarchical decision tree state machine, which executes the following decision logic: The first level of decision-making is based on the train approach signal triggering the highest level of warning; The second layer of decision-making integrates environmental visibility, trajectory risk score of intruding targets in the crossing area, and crossing congestion index to calculate real-time dynamic risk values. The third-level decision-making process dynamically generates a combination of yellow flashing warning parameters, including brightness coefficient, basic flashing frequency, and duty cycle, based on the dynamic risk value and environmental visibility. When a target is detected approaching at high speed or a pedestrian is detected loitering, the control module generates a frequency-modulated pulse control command that superimposes a time-decayed pulse increment on the base flash frequency.

9. A multi-mode yellow flashing warning signal light control system for railway crossings according to claim 3, characterized in that, The drive execution module includes a programmable constant current LED drive circuit, which is used to accurately execute the control command. By adjusting the current magnitude and PWM waveform, it controls the yellow flashing warning light to achieve continuous brightness adjustment, frequency conversion pulse flashing, and asymmetric duty cycle flashing.

10. A multi-mode yellow flashing warning signal light control system for railway crossings according to claim 6, characterized in that, The sensor housing, the control module, and the drive execution module in the sensing module have a protection rating of no less than IP67. The internal circuit board is coated with conformal coating and has a heat-conducting structure to conduct heat from the main control chip to the housing.

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