An early warning system and method for highway sections where hazardous chemical vehicles travel.

Abstract

This invention discloses an early warning system and method for hazardous chemical vehicles traveling on highways, including a road segment monitoring and early warning device and an early warning platform. The road segment monitoring and early warning device monitors vehicles traveling on the current road segment. If a hazardous chemical vehicle is detected, the device collects video image information and speed information of the hazardous chemical vehicle and transmits this information to the early warning platform. The early warning platform receives the information, processes it to derive early warning information and a warning level for the hazardous chemical vehicle, and then transmits the early warning information and warning level to the road segment monitoring and early warning device, while simultaneously broadcasting it to vehicle-mounted radio equipment within the current road segment. The road segment monitoring and early warning device also receives the early warning information and warning level transmitted from the early warning platform and issues early warnings to vehicles traveling on the current road segment. This invention enables drivers to quickly understand hazardous chemical transportation information on a road segment, make advance judgments, and improve road driving safety.

Description

Technical Field

[0001] This invention relates to the field of traffic monitoring and early warning technology, specifically to an early warning system and method for hazardous chemical vehicles traveling on highways. Background Technology

[0002] In recent years, the scale of hazardous chemical transportation in my country has been continuously expanding, with road transport accounting for the largest share. Because hazardous chemical transport vehicles generally have large load capacities and wide transport ranges, and conventional supervision still has loopholes, accidents involving hazardous chemical vehicles during road transport can cause significant damage to other vehicles on the road, the environment, and public property, seriously threatening traffic safety. Therefore, to avoid hazardous chemical transport accidents and reduce traffic hazards, monitoring and early warning of hazardous chemical vehicles are crucial. However, existing monitoring of hazardous chemical transport vehicles mainly focuses on monitoring the vehicles themselves, lacking monitoring and early warning of the road sections they travel on. When hazardous chemical vehicles exhibit dangerous behavior or are involved in transport accidents, other vehicles on the road cannot make advance judgments, greatly increasing the risk of hazardous chemical transport and further affecting road safety. Therefore, monitoring and early warning of hazardous chemical vehicles has become an urgent problem to be solved by the transportation system.

[0003] In summary, the road transport of hazardous chemicals is characterized by its wide distribution, difficulty in management, and high risks. Furthermore, the current lack of monitoring of hazardous chemical transport routes and early warning systems for other vehicles traveling on those routes greatly increases the risk of a chain reaction from hazardous chemical transport accidents, further impacting road safety.

[0004] In view of this, the inventors provide an early warning system and method for hazardous chemical vehicles traveling on highways to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and propose an early warning system and method for hazardous chemical vehicles traveling on highways, including a road section monitoring and early warning device and an early warning platform. The road section monitoring and early warning device collects data on the current transportation status of hazardous chemical vehicles on the road section and transmits the collected information to the early warning platform via wireless signals. The early warning platform analyzes the data to derive early warning information and warning levels, which are then transmitted back to the road section monitoring and early warning device via wireless signals. This device provides drivers with information on the current transportation status of hazardous chemical vehicles on the road section, enabling them to make advance judgments and improve road safety. Simultaneously, the early warning platform transmits the early warning information to vehicle-mounted radio equipment on the current road section via broadcast signals.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] On the one hand, the present invention provides an early warning system for highway sections where hazardous chemical vehicles travel, including a road section monitoring and early warning device and an early warning platform;

[0008] The road section monitoring and early warning device is installed beside the highway to monitor vehicles traveling on the current road section. If a hazardous chemical vehicle is detected, the device collects video image information and speed information of the hazardous chemical vehicle and transmits the information to the early warning platform.

[0009] The early warning platform is used to receive the information, process the information to obtain early warning information and early warning level for hazardous chemical vehicles, and then transmit the early warning information and early warning level to the road section monitoring and early warning device, while broadcasting it to the vehicle-mounted radio equipment in the current road section.

[0010] The road section monitoring and early warning device is also used to receive early warning information and early warning levels transmitted by the early warning platform, and to issue early warnings to vehicles traveling on the current road section.

[0011] Furthermore, the road section monitoring and early warning device includes a column fixedly connected to the ground. An installation plate and a radar speed measurement module are provided on any side of the column. A monitoring module and an early warning module are provided on the installation plate. Both the radar speed measurement module and the monitoring module are connected to a signal transceiver installed on the column. The signal transceiver is connected to a signal processor. The signal processor is connected to the early warning module.

[0012] It also includes a power supply module installed on the column, and the radar speed measurement module, monitoring module, early warning module, signal transceiver, and signal processor are all connected to the power supply module.

[0013] Furthermore, the signal transceiver is connected to the early warning platform.

[0014] Furthermore, the radar speed measurement module includes a radar speed measuring plate installed on either side of the column. The radar speed measuring plate is provided with a speed limit sign and a first LED display screen. The radar speed measuring plate is connected to the first LED display screen to display the vehicle speed measured by the radar speed measuring plate. The radar speed measuring plate is connected to a signal transceiver to transmit the measured vehicle speed to the early warning platform through the signal transceiver. Both the radar speed measuring plate and the first LED display screen are connected to a power supply module.

[0015] Furthermore, the monitoring module includes a surveillance camera, an infrared camera, and a supplementary light, all connected to the power supply module. The signal transceiver is connected to the surveillance camera and the infrared camera, respectively, and is used to transmit video image information of hazardous chemical vehicles to the early warning platform through the signal transceiver. The signal processor is connected to the supplementary light.

[0016] Furthermore, the warning module includes a second LED display screen and a signal indicator group, both of which are connected to the power supply module. The second LED display screen and the signal indicator group are both connected to the signal processor. The signal transceiver transmits the warning information and warning level received from the warning platform to the signal processor, which then transmits it to the second LED display screen and the signal indicator group for warning vehicles traveling on the current road segment.

[0017] Furthermore, the power supply module includes a solar photovoltaic cell assembly and a battery connected thereto, and the radar speed measuring board, the first LED display screen, the monitoring camera, the infrared camera, the supplementary light, the second LED display screen, the signal indicator group, the signal transceiver and the signal processor are all connected to the battery.

[0018] Furthermore, it also includes a cleaning mechanism, which includes a water tank, a water pump, a nozzle assembly, and a transmission cleaning component. The column is a hollow structure with an opening at the bottom. A rotating door is rotatably connected to one side of the opening. The water tank is set in the hollow structure, and water pipes, a water pump, water pipes, and a nozzle assembly are connected to the water tank in sequence.

[0019] The nozzle assembly is fixed on the mounting plate and located at the lower end of the second LED display screen, and is used to spray cleaning fluid onto the second LED display screen. A transmission cleaning component is provided on the mounting plate above the nozzle assembly.

[0020] Both the water pump and the transmission cleaning assembly are connected to a battery housed in the hollow structure.

[0021] On the other hand, the present invention provides an early warning method for highway sections where hazardous chemical vehicles travel, based on the aforementioned early warning system for highway sections where hazardous chemical vehicles travel, comprising the following steps:

[0022] Step 1: The early warning platform establishes early warning level evaluation criteria for preset early warning items;

[0023] Step 2: Monitor vehicles on the current road section using the road section monitoring and early warning device, and obtain video image information and speed information of hazardous chemical vehicles, and then transmit them to the early warning platform;

[0024] Step 3: The early warning platform extracts the actual early warning items and the license plate number of the hazardous chemical vehicles from the video image information of the hazardous chemical vehicles. It processes the actual early warning items into data that can be quantified and evaluated. If the quantified evaluation data of the early warning item is greater than 0, then the early warning item is early warning information; otherwise, it is not early warning information. The early warning information also includes the license plate number.

[0025] Step 4: Analyze the evaluation data of the quantified early warning items in Step 3 according to the preset early warning analysis method to obtain the early warning score. Compare the early warning score with the early warning level evaluation criteria to obtain the early warning level.

[0026] Step 5: If the warning level is at the set level, the warning platform transmits the warning level and warning information to the signal transceiver. The signal transceiver displays the warning information on the second LED display screen through the signal processor, and the signal indicator light group displays the corresponding warning level light color. At the same time, the warning platform transmits the warning level and warning information to the vehicle-mounted radio equipment in the current road section through a broadcast signal; otherwise, the warning is only issued through the second LED display screen and the signal indicator light group.

[0027] Furthermore, in step 1, the preset warning items include accident warnings, hazardous chemical transport type warnings, lane warnings, vehicle status warnings, speeding warnings, and abnormal speed warnings. The warning level evaluation criteria are shown in Table 1.

[0028] In step 4, the formula for calculating the warning score is as follows:

[0029] Warning score = α*β*γ*(A+B+C+…)≤100;

[0030] Where α is the weather coefficient, β is the day-night coefficient, γ is the sensitivity coefficient, and A, B, C... are the data of each early warning item after quantitative processing;

[0031] A warning score > 80 is a Level A warning; a warning score between 50 and 80 is a Level B warning; a warning score between 30 and 50 is a Level C warning; and a warning score < 30 is a Level D warning.

[0032] In step 5, the set level is either level A or level B.

[0033] Furthermore, it also includes a canopy, which is installed on top of the mounting plate to protect the radar speed measurement module, monitoring module, early warning module, and signal transceiver.

[0034] Compared with the prior art, the present invention has the following beneficial effects:

[0035] 1) This invention provides an early warning system for hazardous chemical vehicles traveling on highways, comprising a road section monitoring and early warning device and an early warning platform. The road section monitoring and early warning device can monitor the road section while also providing early warnings for other vehicles. In terms of monitoring, the device can not only monitor hazardous chemical vehicles appearing within the road section in real time, but also monitor abnormal temperature changes on the road section at night, and transmit the monitoring information to the early warning platform. In terms of early warning, after receiving the early warning information transmitted from the early warning platform, the device displays relevant early warning information and warning levels through an LED panel and signal indicator lights installed on the device, enabling drivers to quickly understand the hazardous chemical transportation information on the road section, make advance judgments, and improve road driving safety.

[0036] 2) This invention provides an early warning system for hazardous chemical transport vehicles traveling on highways. The monitoring and early warning device for this road section uses an added radar speed measuring plate to measure the speed of other vehicles on the road, replacing the need for speed measuring instruments installed on the road section and avoiding redundant installation and resource waste. Furthermore, the device is powered by solar photovoltaic modules, which is beneficial for energy conservation and emission reduction, and can still ensure the smooth operation of monitoring and early warning work in the event of an emergency power outage. The added canopy and cleaning mechanism ensure that the device's real-time monitoring and early warning of the road section are not affected by other factors. The canopy can reduce the impact of rain, snow, bird droppings, etc., on the camera monitoring and LED panel display to a certain extent; in addition, the cleaning mechanism on the device can effectively clean the LED display screen, avoiding the impact of prolonged exposure of the device to the external environment on the monitoring and early warning effect, allowing drivers to clearly and quickly understand the road section information and reducing traffic hazards.

[0037] 3) This invention provides an early warning system for hazardous chemical vehicles traveling on highways. The early warning platform receives video image information and vehicle speed information of hazardous chemical vehicles from road monitoring and early warning devices. It extracts early warning items from the video image information of the hazardous chemical vehicles and performs quantitative processing to obtain relevant quantitative analysis data. Based on the established early warning level evaluation criteria, early warning information and early warning levels are obtained and transmitted wirelessly and via broadcast signals to the road monitoring and early warning devices and vehicle-mounted radio equipment within the road area. Attached Figure Description

[0038] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the early warning system for hazardous chemical vehicles traveling on highways according to the present invention;

[0041] Figure 2 This is a schematic diagram of the road section monitoring and early warning device of the early warning system for hazardous chemical vehicles traveling on highways, as per the present invention.

[0042] Figure 3 This is a flowchart illustrating the early warning method for hazardous chemical vehicles traveling on highways according to the present invention.

[0043] The components are as follows: 1 is the column; 2 is the mounting plate; 3 is the radar speed measurement module; 4 is the monitoring module; 5 is the early warning module; 6 is the signal transceiver; 7 is the power supply module; 8 is the cleaning mechanism; 9 is the canopy; 11 is the revolving door; 31 is the radar speed measurement board; 32 is the speed limit sign; 33 is the first LED display screen; 41 is the monitoring camera; 42 is the infrared camera; 43 is the supplementary light; 51 is the second LED display screen; 52 is the signal indicator light group; 71 is the solar photovoltaic cell module; 81 is the water tank; 82 is the water pump; 83 is the nozzle group; and 84 is the transmission cleaning component. Detailed Implementation

[0044] Exemplary embodiments will now be described in detail. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0045] Please see Figure 1 , Figure 2 The present invention provides an early warning system for highway sections where hazardous chemical vehicles travel, including a road section monitoring and early warning device and an early warning platform;

[0046] The monitoring and early warning device for this section of the road is set up beside the highway to monitor vehicles traveling on the current road section. If a hazardous chemical vehicle is detected, the device will collect video image information and speed information of the hazardous chemical vehicle and transmit the information to the early warning platform.

[0047] This early warning platform is used to receive video image information and vehicle speed information of hazardous chemical vehicles, analyze the information to obtain early warning information and early warning level of hazardous chemical vehicles, and then transmit the early warning information and early warning level to the road section monitoring and early warning device, and at the same time broadcast it to the vehicle-mounted radio equipment in the current road section.

[0048] The monitoring and early warning device for this section of road is also used to receive early warning information and warning levels transmitted by the early warning platform, and to issue warnings to vehicles traveling on the current section of road.

[0049] like Figure 2As shown, the road section monitoring and early warning device includes a column 1 fixedly connected to the ground. An installation plate 2 and a radar speed measurement module 3 are provided on any side of the column 1. A monitoring module 4 is provided on the top of the installation plate 2, and an early warning module 5 is provided on the side and bottom. Both the radar speed measurement module 3 and the monitoring module 4 are connected to a signal transceiver 6 installed on the column 1. The signal transceiver 6 is connected to a signal processor, and the signal processor is connected to the early warning module 5.

[0050] It also includes a power supply module 7 mounted on column 1. The radar speed measurement module 3, monitoring module 4, early warning module 5, signal transceiver 6, and signal processor are all connected to the power supply module 7. The signal transceiver 6 is wirelessly connected to the early warning platform. The specific early warning platform is located in the existing road transport management center and is an analysis and processing platform for the management of road transport of hazardous chemicals vehicles. The platform consists of a computer, detection algorithms, and early warning level evaluation standards.

[0051] Furthermore, the radar speed measurement module 3 includes a radar speed measuring plate 31 installed on either side of the column 1. The radar speed measuring plate 31 is provided with a speed limit sign 32 and a first LED display screen 33. The radar speed measuring plate 31 and the first LED display screen 33 are electrically connected to each other to display the vehicle speed measured by the radar speed measuring plate 31. The radar speed measuring plate 31 is also electrically connected to a signal transceiver 6 to transmit the measured vehicle speed to the signal transceiver 6 via an electrical signal. The signal transceiver 6 converts the electrical signal into a wireless signal and transmits it to the early warning platform via a wireless signal. Both the radar speed measuring plate 31 and the first LED display screen 33 are connected to the power supply module 7.

[0052] Specifically, the speed limit sign 32 is set according to the current road speed limit, and the radar speed measuring board 31 measures the speed of vehicles traveling on the road section in real time and displays the vehicle speed on the first LED display screen 33.

[0053] Furthermore, the monitoring module 4 includes a surveillance camera 41, an infrared camera 42, and a supplementary light 43, which are respectively connected to the power supply module 7. The signal transceiver 6 is electrically connected to the surveillance camera 41 and the infrared camera 42, respectively, and is used to transmit the video image information of the hazardous chemical vehicle to the early warning platform through the signal transceiver 6. The signal processor is connected to the supplementary light 43.

[0054] Specifically, two surveillance cameras 41 are symmetrically arranged on the top of the mounting plate 2. The surveillance camera 41, the infrared camera 42, and the supplementary light 43 all have a rotation sensing function. These are all existing technologies and will not be described in detail here.

[0055] Furthermore, the warning module 5 includes a second LED display screen 51 and a signal indicator group 52, which are respectively connected to the power supply module 7. Both the second LED display screen 51 and the signal indicator group 52 are connected to the signal processor. The signal transceiver 6 transmits the warning information and warning level received from the warning platform to the signal processor, which then transmits it to the second LED display screen 51 and the signal indicator group 52 for warning vehicles traveling on the current road segment.

[0056] Furthermore, the power supply module 7 includes a solar photovoltaic cell assembly 71 and a battery connected thereto. The radar speed measuring board 31, the first LED display 33, the monitoring camera 41, the infrared camera 42, the supplementary light 43, the second LED display 51, the signal indicator group 52, the signal transceiver 6, and the signal processor are all connected to the battery.

[0057] In this embodiment, a solar photovoltaic cell module 71 is inclinedly connected to the top of the column 1 via a bracket. The solar photovoltaic cell module 71 converts light energy into electrical energy and stores it in a battery installed inside the column 1. The battery supplies power to the various electrical components installed on the highway monitoring and early warning device.

[0058] Furthermore, it also includes a cleaning mechanism 8, which includes a water tank 81, a water pump 82, a nozzle assembly 83, and a transmission cleaning component 84. The column 1 has a hollow structure and an opening at the bottom. A rotating door 11 is rotatably connected to one side of the opening. The water tank 81 is installed in the hollow structure, and water pipes, water pump 82, water pipes, and nozzle assembly 83 are connected to the water tank 81 in sequence.

[0059] The nozzle assembly 83 is fixed on the mounting plate 2 and located at the lower end of the second LED display screen 51. It is used to spray cleaning fluid (glass cleaner) onto the second LED display screen 51. A transmission cleaning assembly 84 is provided on the mounting plate 2 above the nozzle assembly 83.

[0060] Both the water pump 82 and the transmission cleaning assembly 84 are connected to a battery housed in the hollow structure (not shown in the figure).

[0061] The transmission cleaning assembly 84 includes a cleaning plate 841, a wiper 842, and a transmission structure. The transmission structure is mounted on the mounting plate 2 and connected to a battery for power supply. The cleaning plate 841 is connected to the transmission structure, and the wiper 842 is fixedly connected to the cleaning plate 841. Driven by the transmission structure, the cleaning plate 841 reciprocates along the length of the second LED display screen 51, thereby causing the wiper 842 to reciprocate along the length of the second LED display screen 51. This, combined with the windshield washer fluid sprayed onto the second LED display screen 51 by the nozzle assembly 83, achieves the effect of cleaning the second LED display screen 51, making the display clear, and allowing the driver to clearly and quickly understand the road information.

[0062] When the glass flux stored in the water tank 81 is insufficient and cannot be pumped to the nozzle assembly 83 to clean the second LED display screen 51, the staff can open the rotating door 11 connected to the opening at the bottom of the column 1 to fill the water tank 81 with glass flux, replenish the glass flux, and perform routine maintenance on the road monitoring and early warning device. After the glass flux is replenished and the routine maintenance of the device is completed, the staff should close the rotating door 11 in time to avoid the internal structure of the device being affected by the external environment.

[0063] It should be noted that this transmission structure is existing technology and will not be described in detail here. For example, patent number 201110190730.9, patent name is sprocket-chain linear reciprocating mechanism; and 201220248995.X, patent name is sprocket-chain linear reciprocating mechanism.

[0064] Furthermore, it also includes a canopy 9, which is a bi-directional inclined roof plate fixedly installed on top of the mounting plate 2 to protect the radar speed measurement module 3, monitoring module 4, early warning module 5, and signal transceiver 6. Specifically, it can reduce the impact of rain, snow, bird droppings, etc., on the video images captured by the monitoring camera 41 and infrared camera 42, as well as the display effect of the second LED display screen 51, to a certain extent.

[0065] In this embodiment, the road section monitoring and early warning device realizes road section monitoring, mainly used to obtain video image information of hazardous chemical vehicles on the road section and the driving speed of hazardous chemical vehicles, and transmit the relevant information to the early warning platform for analysis and processing;

[0066] Specifically, the monitoring of this road section is divided into: routine monitoring and non-routine monitoring.

[0067] Routine road segment monitoring: Surveillance camera 41 acquires real-time video images of the road segment. When surveillance camera 41 detects a hazardous materials vehicle on the road segment, it transmits the acquired video image information to signal transceiver 6 via electrical signals. Simultaneously, it transmits the vehicle speed obtained by radar speed measuring board 31 to signal transceiver 6 via electrical signals. Signal transceiver 6 converts the received video image information electrical signals and hazardous materials vehicle speed electrical signals into wireless signals and sends them to the early warning platform. Radar speed measuring board 31 can also measure the speed of other vehicles traveling on the road segment and display the measured speeds on radar speed measuring board 31 in real time.

[0068] Unconventional road segment monitoring: When a road segment experiences rain, snow, fog, haze, or nighttime, visibility is low, potentially affecting the video images captured by the monitoring camera 41, resulting in unclear images. The infrared camera 42, however, uses infrared thermal radiation imaging to mitigate the impact of unconventional weather and nighttime conditions on road segment monitoring. This infrared camera 42 monitors abnormal temperature changes in the road segment in real time. When abnormally high temperatures are detected in hazardous chemical vehicles within the segment, the supplementary lighting 43 is activated to provide additional illumination, improving the image quality captured by the monitoring camera 41. The video image information obtained from the monitoring camera 41 and the infrared camera 42 is transmitted via electrical signals to the transceiver 6. The transceiver 6 then converts the received video image information electrical signals into wireless signals and transmits them to the early warning platform.

[0069] In this embodiment, the road section monitoring and early warning device processes the real-time video image information and vehicle speed information of the collected hazardous chemical vehicles to obtain the early warning information and early warning level of the hazardous chemical vehicles. The specific process is as follows: After receiving the video image images captured by the monitoring camera 41 and / or the infrared camera 42, the early warning platform identifies and extracts the video image segments containing hazardous chemical vehicles, collects information such as the license plate number of the hazardous chemical vehicle, the type of hazardous chemical transportation, the vehicle's driving lane, the vehicle's status (stationary / moving), the vehicle speed, and whether an accident has occurred in the image frame, and derives the early warning items from it.

[0070] When an accident involving a hazardous chemical vehicle is detected in an image, it should be immediately reported to the relevant departments, and the type of accident should be determined so that the relevant departments can respond quickly and handle the accident in a timely manner. At the same time, early warning information and warning level should be sent to the road monitoring and early warning device so that vehicles on the road can make early judgments, avoid chain effects, and reduce the subsequent harm of the accident.

[0071] When no accident occurs involving hazardous chemical vehicles, the collected information is aggregated, and the data is analyzed based on the built-in hazardous chemical transport vehicle early warning analysis method to obtain early warning information and early warning levels.

[0072] Early warning analysis method: Each early warning item is quantified to obtain an early warning score for each item. Based on the early warning scores of each item, an early warning score is calculated, and the early warning level is determined by the early warning score.

[0073] The warning scores for each warning item are as follows:

[0074] Accident Warning: If an accident involving a hazardous chemical vehicle is detected on a road section, the warning platform will immediately report it to the relevant transportation management department for further processing and analysis of the accident's severity. If the detection result indicates a minor accident involving a hazardous chemical vehicle, such as a minor collision, the warning score for this item is 30 points; if a major accident occurs, such as a vehicle collision, hazardous chemical leak, vehicle explosion, or vehicle fire, the warning score for this item is 100 points; if no accident occurs, the warning score for this item is 0 points.

[0075] Early Warning for Hazardous Chemical Transport Types: Hazardous chemical transport vehicles are mainly classified into nine categories: explosives, flammable or toxic gases, flammable liquids, flammable solids, oxides and organic peroxides, toxic and infectious substances, radioactive substances, corrosive substances, and other hazardous substances. Different transport types of hazardous chemicals pose varying degrees of risk to road travel, and relevant departments also handle accidents caused by different transport types of hazardous chemicals differently. Therefore, determining the transport type of the target hazardous chemical vehicle is a crucial factor in hazardous chemical vehicle transport risk analysis. When the test result is a non-flammable and non-toxic type, this item receives a warning score of 10 points; when the result is a flammable, explosive, or toxic type, this item receives a warning score of 20 points.

[0076] Lane Warning: Based on real-time road segment information transmitted by the road segment monitoring and warning device, the system determines the lane in which the target hazardous chemical vehicle is traveling, thereby determining whether the vehicle is engaging in any traffic violations. If the hazardous chemical vehicle is traveling in the overtaking lane or the car lane, this item receives a warning score of 10 points; if it is traveling in the designated hazardous chemical vehicle lane, this item receives a warning score of 0 points.

[0077] Vehicle Static / Dynamic Status Warning: Since parking is generally prohibited on highways during normal operating hours, the current status (parked / moving) of hazardous chemical vehicles can be detected to determine if any abnormal behavior is occurring. If the hazardous chemical vehicle is parked, this item receives a warning score of 30 points; if the vehicle is moving, this item receives a warning score of 0 points.

[0078] Speeding Warning: Due to the inherent characteristics of hazardous chemical vehicles and the traffic risks posed by their speeding, the permitted speed limits for hazardous chemical vehicles on certain road sections are typically lower than those for other vehicles. By detecting the speed of hazardous chemical vehicles and comparing it to the permitted speed limits for the road section, it is determined whether the hazardous chemical vehicle's speed poses a road risk. If the detection result shows that the hazardous chemical vehicle exceeds the permitted speed limit by less than 10%, this item receives a warning score of 10 points; if it exceeds the permitted speed limit by 10% but less than 20%, this item receives a warning score of 15 points; if it exceeds the permitted speed limit by 20%, this item receives a warning score of 20 points; if the hazardous chemical vehicle's speed is within the permitted speed range, this item receives a warning score of 0 points.

[0079] Abnormal Speed ​​Warning: Hazardous materials vehicles typically do not experience rapid speed drops or increases within a short period. Therefore, any abnormal speed changes indicate potential abnormal behavior. A warning score of 10 points is awarded if the vehicle speed drops or increases rapidly within a short time; a warning score of 0 points is awarded if the vehicle speed is constant.

[0080] Based on the scores of each warning item, a warning score is determined. The warning score is calculated using the following formula:

[0081] Warning score = α*β*γ*(A+B+C+…)≤100 (values ​​exceeding 100 are rounded to 100);

[0082] Where α is the weather coefficient, β is the day-night coefficient, γ is the sensitivity coefficient, and A, B, C... are the warning scores for each sub-item.

[0083] It should be noted that weather conditions have a significant impact on the operation of hazardous chemical transport vehicles and other vehicles on the same road. In severe weather, drivers' judgment of road conditions ahead is severely impaired, greatly increasing the risks associated with transporting hazardous chemicals. Furthermore, severe weather can also affect the speed at which relevant departments respond to traffic accidents. Therefore, weather conditions are a crucial factor in the risk analysis of hazardous chemical transport vehicles. This analysis uses a weather coefficient α to assess the degree of impact of weather conditions.

[0084] The weather coefficient α is obtained based on the different weather conditions reported in the local weather forecast. When the weather is sunny, α = 1; when the weather is foggy, light rain, light snow or sleet, α = 1.1; when the weather is dense fog, moderate rain or moderate snow, α = 1.2; when the weather is dense fog, heavy rain or heavy snow, α = 1.5; when the weather is heavy fog, torrential rain or blizzard, α = 1.8.

[0085] Day / night conditions: Driving during the day or night has a significant impact on the operation of hazardous chemical transport vehicles and other vehicles on the same road. When driving at night, the driver's mental state, judgment, and visibility are impaired, greatly increasing the risks associated with transporting hazardous chemicals. Therefore, day / night conditions are a crucial factor in the risk analysis of hazardous chemical transport. This analysis method uses a day / night coefficient α to assess the degree of impact of day / night conditions.

[0086] The day-night coefficient β is obtained based on the current day-night conditions. When the monitoring period is during the day, β = 1.0; when the monitoring period is at night, β = 1.2.

[0087] Sensitivity: Holidays have a significant impact on vehicle travel. On holiday days, the number of vehicles on roads increases significantly, which raises road driving risks and greatly increases the severity, scope, and losses of accidents. It also makes it more difficult for relevant departments to handle accidents and evacuate people and vehicles from affected areas. Therefore, this analysis method uses the sensitivity coefficient γ to assess the impact of holidays.

[0088] The sensitivity coefficient γ is obtained based on the date. When the monitoring date is not a holiday or during a non-major event, γ = 1.0; when the monitoring date is a holiday or during a major event, γ = 1.2.

[0089] The warning level is determined by the obtained warning score, and the warning level is judged according to the criteria in Table 1.

[0090] Table 1. Early Warning Level Classification Standards

[0091] Warning Level Warning score Level A Warning ＞80 Level B Warning 50～80 Level C Alert 30～50 Level D Warning ＜30

[0092] The obtained warning levels and warning information are transmitted wirelessly and via broadcast to the road section monitoring and warning devices and vehicle-mounted radio equipment within the road section area to achieve road section warning.

[0093] In this embodiment, the road section monitoring and early warning device also realizes road section early warning. Specifically, after receiving the wireless signal containing early warning information and early warning level transmitted by the early warning platform, the signal transceiver 6 of the road section monitoring and early warning device converts the wireless signal into an electrical signal and transmits it to the signal processor. After processing the electrical signal, the signal processor transmits it to the second LED display screen 51 and the signal indicator group 52 respectively. The second LED display screen 51 displays the early warning information according to the received signal, and the signal indicator group 52 displays the corresponding early warning level light color according to the received signal. Through the joint operation of the second LED display screen 51 and the signal indicator group 52, the early warning function of the road section monitoring and early warning device is realized.

[0094] Vehicle-mounted radios within the road section receive broadcast signals from the early warning platform, broadcasting road section warning information and warning levels to drivers as supplementary warnings. Vehicles outside the monitoring range can receive warning information via vehicle-mounted radios, thereby increasing driver vigilance or allowing them to plan alternative routes and reduce the risk of accidents.

[0095] By using road monitoring and early warning devices in conjunction with vehicle-mounted radio equipment, the problem of insufficient warning range of road monitoring and early warning devices can be solved. At the same time, it can enable drivers to react earlier, avoid the chain reaction of accidents, and reduce the pressure on relevant departments.

[0096] The second LED display screen 51 displays road warning information based on the information generated by the warning platform, including: license plate number information of hazardous chemical vehicles, type of hazardous chemical transportation, vehicle status, vehicle driving lane, vehicle speed, etc. The warning content is adjusted according to the actual situation, but attention should be paid to the fact that the displayed information should be concise and clear, and avoid displaying too much information, which may affect the driver's judgment.

[0097] The signal indicator light group 52 displays the corresponding light color according to the warning level generated by the warning platform. When the warning level is D or there is no warning, the signal indicator light remains green; when the warning level is B or C, the signal indicator light color is adjusted to yellow; when the warning level is A, the signal indicator light flashes yellow.

[0098] When a hazardous materials vehicle is involved in a major accident, the second LED display screen 51 will highlight the type of accident, while the signal indicator group 52 will flash a strong red light, enabling drivers of other vehicles on the road to quickly and clearly understand the accident, make a judgment in advance, and reduce the harm caused by the accident.

[0099] On the other hand, embodiments of the present invention also provide an early warning method for highway sections where hazardous chemical vehicles travel, based on the aforementioned early warning system for highway sections where hazardous chemical vehicles travel, including the following steps:

[0100] Step 1: The early warning platform establishes early warning level evaluation criteria for preset early warning items;

[0101] Step 2: Monitor vehicles on the current road section using the road section monitoring and early warning device, and obtain video image information and speed information of hazardous chemical vehicles, and then transmit them to the early warning platform;

[0102] Step 3: The early warning platform extracts the actual early warning items and the license plate number of the hazardous chemical vehicles from the video image information of the hazardous chemical vehicles. It processes the actual early warning items into data that can be quantified and evaluated. If the quantified evaluation data of the early warning item is greater than 0, then the early warning item is early warning information; otherwise, it is not early warning information. The early warning information also includes the license plate number.

[0103] Step 4: Analyze the evaluation data of the quantified early warning items in Step 3 according to the preset early warning analysis method to obtain the early warning score. Compare the early warning score with the early warning level evaluation criteria to obtain the early warning level.

[0104] Step 5: If the warning level is at the set level, the warning platform transmits the warning level and warning information to the signal transceiver 6. The signal transceiver 6 displays the warning information on the second LED display screen 51 through the signal processor, and the signal indicator light group 52 displays the corresponding warning level light color. At the same time, the warning platform transmits the warning level and warning information to the vehicle-mounted radio equipment in the current road section through a broadcast signal. Otherwise, the warning is only issued through the second LED display screen 51 and the signal indicator light group 52.

[0105] In step 1, the preset warning items include accident warnings, hazardous chemical transport type warnings, lane warnings, vehicle status warnings, speeding warnings, and abnormal speed warnings. The warning level evaluation criteria are shown in Table 1.

[0106] In step 4, the formula for calculating the warning score is as follows:

[0107] Warning score = α*β*γ*(A+B+C+…)≤100;

[0108] Where α is the weather coefficient, β is the day-night coefficient, γ is the sensitivity coefficient, and A, B, C... are the data of each early warning item after quantitative processing;

[0109] A warning score > 80 is a Level A warning; a warning score between 50 and 80 is a Level B warning; a warning score between 30 and 50 is a Level C warning; and a warning score < 30 is a Level D warning.

[0110] In step 5, the set level is either level A or level B;

[0111] Specifically, the early warning analysis method has been described above and will not be repeated here.

[0112] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0113] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A method for early warning of hazardous chemical vehicles traveling on highways, characterized in that, The use of road section monitoring and early warning devices and platforms includes the following steps: Step 1: The early warning platform establishes early warning level evaluation criteria for preset early warning items. The early warning platform is used to receive video image information and vehicle speed information of hazardous chemical vehicles, process the information to obtain early warning information and early warning level of hazardous chemical vehicles, and then transmit the early warning information and early warning level to the road section monitoring and early warning device, and broadcast it to the vehicle-mounted radio equipment in the current road section. The preset early warning items include accident early warning, hazardous chemical transportation type early warning, lane early warning, vehicle status early warning, speeding early warning, and abnormal speed early warning. Step 2: Monitor vehicles on the current road section using the road section monitoring and early warning device, and obtain video image information and speed information of hazardous chemical vehicles, and then transmit them to the early warning platform; The road section monitoring and early warning device includes a column (1) fixedly connected to the ground, and an installation plate (2) and a radar speed measurement module (3) are provided on any side of the column (1). The installation plate (2) is provided with a monitoring module (4) and an early warning module (5). The radar speed measurement module (3) and the monitoring module (4) are both connected to a signal transceiver (6) set on the column (1). The signal transceiver (6) is connected to a signal processor, and the signal processor is connected to the early warning module (5); It also includes a power supply module (7) set on the column (1). The radar speed measurement module (3), the monitoring module (4), the early warning module (5), the signal transceiver (6), and the signal processor are all connected to the power supply module (7); The signal transceiver (6) is connected to the early warning platform; The warning module (5) includes a second LED display screen (51) and a signal indicator group (52) that are respectively connected to the power supply module (7). Both the second LED display screen (51) and the signal indicator group (52) are connected to the signal processor. The monitoring and early warning device for the road section is divided into two types: routine monitoring and non-routine monitoring. The non-routine monitoring is as follows: when the road section is in rainy or snowy weather, foggy or hazy weather, or at night, the infrared camera (42) will monitor the abnormal temperature changes of the road section in real time. When an abnormally high temperature is detected in a hazardous chemical vehicle in the road section, the supplementary light (43) will be turned on to supplement the light of the target hazardous chemical vehicle. The video image information obtained by the monitoring camera (41) and the infrared camera (42) will be transmitted to the signal transceiver (6) through electrical signals. The signal transceiver (6) will convert the received video image information electrical signals into wireless signals and send them to the early warning platform. Step 3: The early warning platform extracts the actual early warning items and the license plate number of the hazardous chemical vehicles from the video image information of the hazardous chemical vehicles. It processes the actual early warning items into data that can be quantified and evaluated. If the quantified evaluation data of the early warning item is greater than 0, then the early warning item is early warning information; otherwise, it is not early warning information. The early warning information also includes the license plate number. Step 4: Calculate the evaluation data of the quantified early warning items in Step 3 according to the preset early warning analysis method to obtain the early warning score, and compare the early warning score with the early warning level evaluation criteria to obtain the early warning level; The formula for calculating the warning score is as follows: Warning score = α*β*γ*(A+B+C+…)≤100; Where α is the weather coefficient, β is the day-night coefficient, γ is the sensitivity coefficient, and A, B, C... are the data of each early warning item after quantitative processing; A warning score > 80 is a Level A warning; a warning score between 50 and 80 is a Level B warning; a warning score between 30 and 50 is a Level C warning; and a warning score < 30 is a Level D warning. Based on the different weather conditions reported in the local weather forecast, the weather coefficient α is obtained. When the weather is sunny, α = 1; when the weather is fog, light rain, light snow or sleet, α = 1.1; when the weather is dense fog, moderate rain or moderate snow, α = 1.2; when the weather is dense fog, heavy rain or heavy snow, α = 1.5; when the weather is heavy fog, torrential rain or blizzard, α = 1.

8. Based on the current day and night conditions, the day-night coefficient β is obtained. When the monitoring period is during the day, β = 1.0; when the monitoring period is during the night, β = 1.

2. The sensitivity coefficient γ is obtained based on the date of the monitoring. When the monitoring date is not a holiday or a non-major event, γ = 1.0; when the monitoring date is a holiday or a major event, γ = 1.

2. Step 5: If the warning level is at the set level, the warning platform transmits its warning level and warning information to the signal transceiver (6). The signal transceiver (6) displays the warning information on the second LED display screen (51) through the signal processor, and the signal indicator light group (52) displays the corresponding warning level light color. At the same time, the warning platform transmits the warning level and warning information to the vehicle radio equipment in the current road section through the broadcast signal; otherwise, the warning is only issued through the second LED display screen (51) and the signal indicator light group (52).

2. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 1, is characterized in that... The road section monitoring and early warning device is installed beside the highway to monitor vehicles traveling on the current road section. If a hazardous chemical vehicle is detected, the device collects video image information and speed information of the hazardous chemical vehicle and transmits the information to the early warning platform. The road section monitoring and early warning device is also used to receive early warning information and early warning level transmitted by the early warning platform and to issue early warnings to vehicles traveling on the current road section.

3. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 1, is characterized in that... The radar speed measurement module (3) includes a radar speed measuring plate (31) set on any side of the column (1). The radar speed measuring plate (31) is provided with a speed limit sign (32) and a first LED display screen (33). The radar speed measuring plate (31) is connected to the first LED display screen (33) to display the vehicle speed measured by the radar speed measuring plate (31). The radar speed measuring plate (31) is connected to a signal transceiver (6) to transmit the measured vehicle speed to the early warning platform through the signal transceiver (6). The radar speed measuring plate (31) and the first LED display screen (33) are both connected to the power supply module (7).

4. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 3, is characterized in that... The monitoring module (4) includes a monitoring camera (41), an infrared camera (42) and a fill light (43) connected to the power supply module (7) respectively. The signal transceiver (6) is connected to the monitoring camera (41) and the infrared camera (42) respectively, and is used to transmit the video image information of the hazardous chemical vehicle to the early warning platform through the signal transceiver (6). The signal processor is connected to the fill light (43).

5. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 1, is characterized in that... The signal transceiver (6) transmits the warning information and warning level received from the warning platform to the signal processor, which then transmits it to the second LED display screen (51) and the signal indicator group (52) for warning vehicles traveling on the current road section.

6. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 4, is characterized in that... The power supply module (7) includes a solar photovoltaic cell assembly (71) and a battery connected thereto. The radar speed measuring board (31), the first LED display screen (33), the monitoring camera (41), the infrared camera (42), the supplementary light (43), the second LED display screen (51), the signal indicator group (52), the signal transceiver (6), and the signal processor are all connected to the battery.

7. The early warning method for highway sections where hazardous chemical vehicles travel, as described in claim 6, is characterized in that... The road section monitoring and early warning device also includes a cleaning mechanism (8), which includes a water tank (81), a water pump (82), a nozzle assembly (83), and a transmission cleaning component (84). The column (1) is a hollow structure, and the lower part of the column (1) is provided with an opening. A rotating door (11) is rotatably connected to one side of the opening. The water tank (81) is set in the hollow structure, and the water tank (81) is connected in sequence with a water pipe, a water pump (82), a water pipe, and a nozzle assembly (83). The nozzle assembly (83) is fixed on the mounting plate (2) and located at the lower end of the second LED display screen (51) for spraying cleaning liquid onto the second LED display screen (51). A transmission cleaning component (84) is provided on the mounting plate (2) above the nozzle assembly (83). Both the water pump (82) and the transmission cleaning assembly (84) are connected to a battery housed in the hollow structure.

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