A vehicle early warning method based on vehicle brake temperature monitoring

Abstract

The present invention discloses a vehicle warning method based on vehicle brake temperature monitoring, belonging to the field of vehicle warning technology. The method comprises the following steps: determining whether there is a vehicle in the environmental data within the current thermal imaging temperature detection range; if so, capturing the vehicle to obtain a captured image; extracting vehicle feature data from the captured image; determining whether the vehicle model meets the requirements; if so, performing thermal imaging temperature detection on the vehicle brake within the thermal imaging temperature detection range to obtain thermal imaging detection temperature data; determining whether the vehicle in the captured image has left the current thermal imaging temperature detection range; if so, extracting and fusing the vehicle feature data and the thermal imaging detection temperature data to generate a vehicle warning level based on the thermal imaging detection temperature data; and performing vehicle warning according to the warning level. The present invention can filter low-risk vehicles, provide real-time warnings for medium-risk vehicles, and assist in pre-emptive emergency response for high-risk vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle early warning, and in particular to a vehicle early warning method based on vehicle brake temperature monitoring. Background Art

[0002] Since my country's terrain is high in the west and low in the east, when designing highways in mountainous areas, designers often lay out lines along the mountains, usually using continuous downhill slopes to overcome the height difference, and the average slope is relatively large.

[0003] According to investigations, compared to other common road sections, long downhill sections have a significantly higher accident probability and higher accident severity. A detailed analysis of the causes of accidents on long downhill sections reveals five key factors: human factors, vehicle factors, road conditions, environmental factors, and management. The most significant factor lies in the vehicle itself, particularly brake thermal decay caused by excessive brake temperatures during downhill driving. In addition, improper human operation (such as improper braking, arbitrary lane changes, and speeding), outdated safety features, inadequate road design, harsh environments, and lax management are also major contributors to the frequent occurrence of primary and secondary accidents on long downhill sections.

[0004] The above analysis shows that, compared to other special road conditions and accident factors, traffic accidents caused by vehicle brake failure due to excessively high brake temperature are the primary factor affecting traffic safety on long downhill sections. Therefore, accurately sensing vehicle brake temperature during driving and using it as a key indicator for truck braking performance analysis and early warning and prevention strategy design, thereby providing truck drivers with more valuable safety information, is a critical and difficult issue that needs to be addressed to improve safety on long downhill sections.

[0005] Currently, there are the following technical problems in long downhill brake failure monitoring:

[0006] (1) Manual monitoring is inefficient and problems are not discovered in a timely manner;

[0007] (2) Existing temperature measurement equipment is not accurate enough and has a high misjudgment rate;

[0008] (3) There is a lack of a systematic brake failure monitoring, early warning and prevention system. Summary of the Invention

[0009] The object of the present invention is to provide a vehicle early warning method based on vehicle brake temperature monitoring to solve the problem of existing long downhill brake failure monitoring.

[0010] The technical solution of the present invention to solve the above technical problems is as follows:

[0011] The present invention provides a vehicle early warning method based on vehicle brake temperature monitoring, the vehicle early warning method based on vehicle brake temperature monitoring comprising:

[0012] S1: Obtain environmental data within the current thermal imaging temperature detection range;

[0013] S2: Determine whether there is a vehicle in the environmental data. If so, proceed to S3;

[0014] S3: Capture the vehicle to obtain a captured image;

[0015] S4: extracting vehicle feature data from the captured image, wherein the vehicle feature data includes a license plate, a vehicle model, and a vehicle location;

[0016] S5: Determine whether the vehicle model meets the requirements. If so, proceed to S6; otherwise, return to S1;

[0017] S6: performing thermal imaging temperature detection on the vehicle brake within a thermal imaging temperature detection range to obtain thermal imaging detection temperature data;

[0018] S7: Determine whether the vehicle in the captured image has left the current thermal imaging temperature detection range. If so, proceed to S8; otherwise, return to S3;

[0019] S8: extracting and fusing the vehicle feature data and the thermal imaging detection temperature data to generate a warning level for the vehicle according to the thermal imaging detection temperature data;

[0020] S9: Perform vehicle warning according to the warning level.

[0021] Optionally, the environmental data within the current thermal imaging temperature detection range is acquired by a thermal imaging temperature detector;

[0022] The thermal imaging temperature detector is a high-frequency infrared thermal imager;

[0023] The thermal imaging temperature detector is installed on a roadside pole close to the right side of the driving lane. The center line of the field of view of the thermal imaging temperature detector is perpendicular to the direction of vehicle travel and the installation height is 0.75 to 1.2 meters from the road surface.

[0024] Optionally, in S3, the vehicle is captured by a high-definition camera to obtain a captured image;

[0025] The high-definition bayonet snapshot camera is installed on an L-shaped pole 30 meters in front of the thermal imaging temperature detector, and the installation height is 4 to 6 meters from the road surface. The high-definition bayonet snapshot camera has a virtual trigger line, and the virtual trigger line is set directly in front of the thermal imaging temperature detector;

[0026] The thermal imaging temperature detector and the high-definition bayonet snapshot camera are connected to the terminal server via an outdoor network cable.

[0027] Optionally, in S8, generating the warning level of the vehicle according to the temperature data detected by thermal imaging includes:

[0028] A1: Determine whether the temperature data detected by thermal imaging is less than or equal to a first preset temperature. If so, generate a warning; otherwise, proceed to A2;

[0029] A2: Determine whether the temperature data detected by the thermal imaging is less than or equal to the second preset temperature. If so, generate a level 3 warning; otherwise, proceed to A3;

[0030] A3: Determine whether the thermal imaging detection temperature data is less than or equal to a third preset temperature. If so, generate a second-level warning; otherwise, generate a first-level warning.

[0031] Optionally, the first preset temperature is 200°C; the second preset temperature is 260°C; and the third preset temperature is 300°C.

[0032] Optionally, the prompt warning is issued through an information release composite screen, which is arranged 150 to 200 meters in front of the installation position of the high-definition card port capture camera along the direction of the lane arrow mark.

[0033] Optionally, the third-level warning is issued through a directional tweeter and an information release composite screen. Along the direction of the lane arrow marking, the directional tweeter is set 80 to 120 meters in front of the installation position of the high-definition camera, the installation height is 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; along the direction of the lane arrow marking, the information release composite screen is set 150 to 200 meters in front of the installation position of the high-definition camera.

[0034] Optionally, the secondary warning is issued through a directional tweeter, a warning light and an information release composite screen; along the direction of the lane arrow mark, the directional tweeter is arranged 80 to 120 meters in front of the installation position of the high-definition camera, the installation height is 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; the warning light is arranged 20 to 40 meters in front of the installation position of the high-definition camera, facing the inside of the road, the center line of the light beam of the warning light is at an angle of 135° to the direction of vehicle travel, and the installation height is 1.5 to 2.0 meters from the road surface; along the direction of the lane arrow mark, the information release composite screen is arranged 150 to 200 meters in front of the installation position of the high-definition camera.

[0035] Optionally, the first-level warning is issued through a directional tweeter, a warning light and an information release composite screen; along the direction of the lane arrow mark, the directional tweeter is arranged 80 to 120 meters in front of the installation position of the high-definition camera, the installation height is 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; the warning light is arranged 50 to 70 meters in front of the installation position of the high-definition camera, facing the inside of the road, the center line of the light beam of the warning light is at an angle of 135° to the direction of vehicle travel, and the installation height is 1.5 to 2.0 meters from the road surface; along the direction of the lane arrow mark, the information release composite screen is arranged 150 to 200 meters in front of the installation position of the high-definition camera.

[0036] Optionally, the warning light is a yellow flashing LED light that provides an early warning to the driver of a vehicle with overheated brakes by changing the flashing frequency.

[0037] The present invention has the following beneficial effects:

[0038] 1. This invention uses multiple sensors, such as deep visible light video and thermal imaging, to dynamically sense the brake temperature of trucks traveling downhill. It also collects real-time data on traffic conditions and traffic emergencies, supporting the precise management of vehicles traveling downhill with rich, high-precision data resources.

[0039] 2. The present invention automatically determines the over-temperature risk range of the vehicle by obtaining the vehicle's brake temperature information and vehicle license plate information, thereby filtering low-risk vehicles, providing real-time warnings for medium-risk vehicles, and assisting in pre-emergency disposal for high-risk vehicles, thereby improving the ability to prevent and control the risk of brake failure of vehicles on long downhill slopes. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a flow chart of a vehicle early warning method based on vehicle brake temperature monitoring according to the present invention;

[0041] Figure 2 This is the deployment diagram of the front-end equipment for vehicle brake temperature monitoring;

[0042] Figure 3 Deployment diagram of vehicle early warning and prevention front-end equipment;

[0043] Figure 4 This is a schematic diagram of warning light colors;

[0044] Figure 5 It is a structural diagram of a directional tweeter;

[0045] Figure 6 This is a structural diagram of the information release composite screen. DETAILED DESCRIPTION

[0046] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0047] The present invention provides a vehicle early warning method based on vehicle brake temperature monitoring, referring to Figure 1 As shown, the vehicle early warning method based on vehicle brake temperature monitoring includes:

[0048] S1: Obtain environmental data within the current thermal imaging temperature detection range;

[0049] The environmental data within the current thermal imaging temperature detection range is obtained through a thermal imaging temperature detector; the thermal imaging temperature detector should use a high-frequency infrared thermal imager to achieve non-stop detection and thermal imaging of the vehicle brake temperature.

[0050] As a specific embodiment, the relevant information of the thermal imaging temperature detector provided by the present invention includes: detector: uncooled array detector (17μm); optical resolution: 382*288 pixels; working wavelength: 7.5~13μm; temperature range: -20℃~900℃; frame rate: 80Hz; field of view (FOV): 53°*38° (f=7.7mm); focusing: electric focusing; accuracy: ±2℃ or ±2%, whichever is greater; interface: USB2.0 / optional USB to GigE (PoE) interface; protection level: IP67 (NEMA4); shock / vibration: IEC60068-2; power supply: USB power supply; working voltage: 5VDC; power consumption: <5W; others: with real-time analysis of temperature data and remote control of infrared thermal imager.

[0051] In addition, reference Figure 2 As shown, the device provided by the present invention is installed on a roadside pole near the right side of the driving lane. The center line of the field of view of the thermal imaging temperature detector is perpendicular to the direction of vehicle travel, and the installation height is 0.75 to 1.2 meters from the road surface; the high-definition bayonet snapshot camera is installed on an L-shaped pole 30 meters in front of the thermal imaging temperature detector. A single unit can manage 3 lanes. The installation height is 4 to 6 meters from the road surface, and the virtual trigger line of the bayonet camera is set directly in front of the thermal imaging temperature detector; the thermal imaging temperature detector and the high-definition bayonet snapshot camera are connected to the terminal server through a Category 6 outdoor network cable.

[0052] S2: Determine whether there is a vehicle in the environmental data. If so, proceed to S3; otherwise, return to S1;

[0053] If the vehicle does not exist in the environmental data, the environmental data is obtained again.

[0054] S3: Capture the vehicle to obtain a captured image;

[0055] The present invention captures the vehicle by a high-definition camera to obtain a captured image; Figure 2 As shown, a high-definition camera is installed at the beginning of the entire system. A warning light is installed on a roadside pole near the right side of the driving lane every 30 meters. The centerline of the light beam forms an angle of 135 degrees with the vehicle's travel direction (towards the inside of the road), and the installation height is 1.5 to 2.0 meters from the road surface. A roadside directional tweeter is installed 100 meters in front of the installation location of the high-definition camera. The installation height is 2.0 to 2.5 meters from the road surface, and the centerline of the sound beam is perpendicular to the road. A roadside information release composite screen is installed 170 meters in front of the installation location of the high-definition camera. The installation height is 4.0 to 4.5 meters from the road surface. The warning light is connected to the terminal server through a wireless data transmission module, and the directional tweeter and the information release composite screen are connected to the terminal server through a Category 6 outdoor network cable.

[0056] The high-definition camera capture unit is used to identify the vehicle's features and extract the vehicle license plate. The thermal imaging temperature detection unit on the road side is linked to perform thermal imaging and temperature recognition, realizing the vehicle's non-parking brake temperature detection and evidence retention.

[0057] S4: extracting vehicle feature data from the captured image, wherein the vehicle feature data includes a license plate, a vehicle model, and a vehicle location;

[0058] S5: Determine whether the vehicle model meets the requirements. If so, proceed to S6; otherwise, return to S1;

[0059] As a specific embodiment, the present invention pre-sets a truck model to solve the problem of brake temperature monitoring and early warning for trucks traveling downhill. Of course, the invention is not limited to this model, and those skilled in the art can set it according to actual conditions.

[0060] S6: performing thermal imaging temperature detection on the vehicle brake within a thermal imaging temperature detection range to obtain thermal imaging detection temperature data;

[0061] S7: Determine whether the vehicle in the captured image has left the current thermal imaging temperature detection range. If so, proceed to S8; otherwise, return to S3;

[0062] S8: extracting and fusing the vehicle feature data and the thermal imaging detection temperature data to generate a warning level for the vehicle according to the thermal imaging detection temperature data;

[0063] Optionally, generating the warning level of the vehicle according to the thermal imaging detection temperature data includes:

[0064] A1: Determine whether the temperature data detected by thermal imaging is less than or equal to a first preset temperature. If so, generate a warning; otherwise, proceed to A2;

[0065] A2: Determine whether the temperature data detected by the thermal imaging is less than or equal to the second preset temperature. If so, generate a level 3 warning; otherwise, proceed to A3;

[0066] A3: Determine whether the thermal imaging detection temperature data is less than or equal to a third preset temperature. If so, generate a second-level warning; otherwise, generate a first-level warning.

[0067] The first preset temperature provided by the present invention is 200° C., the second preset temperature is 260° C., and the third preset temperature is 300° C. Those skilled in the art may adjust the preset temperatures according to actual conditions.

[0068] The present invention compares the real-time brake temperature with a set temperature threshold. If the temperature exceeds the set threshold, the vehicle is identified as having reached a high-temperature warning level. Differentiated over-temperature warnings are provided to the driver via warning lights, directional tweeters, and a composite information display.

[0069] On this basis, reference Figure 3 As shown, the warning of the present invention is issued through an information release composite screen. Along the direction of the lane arrow mark, the information release composite screen is set 150 to 200 meters in front of the installation position of the high-definition card port capture camera, specifically 170 meters.

[0070] The third-level warning is issued through a directional tweeter and an information release composite screen. Along the direction of the lane arrow marking, the directional tweeter is set 80 to 120 meters in front of the installation position of the high-definition camera (specifically 100 meters), with an installation height of 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; along the direction of the lane arrow marking, the information release composite screen is set 150 to 200 meters in front of the installation position of the high-definition camera, specifically 150 meters, 170 meters and 200 meters.

[0071] The second-level warning is issued through a directional tweeter, warning light and information release composite screen; along the direction of the lane arrow mark, the directional tweeter is arranged at 80 to 120 meters in front of the installation position of the high-definition card mount snapshot camera, specifically 80m, 100m, and 120m, with an installation height of 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; the warning light is arranged at 20 to 40 meters in front of the installation position of the high-definition card mount snapshot camera, specifically 30m, facing the inside of the road, the center line of the warning light beam is at an angle of 135° to the vehicle's driving direction, and the installation height is 1.5 to 2.0 meters from the road surface; along the direction of the lane arrow mark, the information release composite screen is arranged at 150 to 200 meters in front of the installation position of the high-definition card mount snapshot camera.

[0072] The first-level warning is issued through a directional tweeter, a warning light and an information release composite screen; the warning light is set 50 to 70 meters in front of the installation position of the high-definition bayonet camera, specifically 60 meters, facing the inside of the road, the center line of the warning light beam is at an angle of 135 degrees to the direction of vehicle travel, and the installation height is 1.5 to 2.0 meters from the road surface.

[0073] As a specific embodiment, the present invention sets a warning light every 30m. The color of the warning light is different according to the different warning levels. The warning light can be set to be a low-frequency flashing warning light or a high-frequency flashing warning light. Figure 4 As shown, in actual application, the warning lights can be set to all be yellow flashing LED lights, and by changing the flashing frequency, the driver of the vehicle with overheated brakes can be warned. Alternatively, the warning lights can be set to flash at a low frequency and at a high frequency.

[0074] refer to Figure 5 As shown, the directional tweeter has good directionality and can emit alarm sounds or text voice. The warning sound has strong penetrating power and can still be effectively transmitted to the driver in the car even when all the windows are closed, giving early warning to the driver of the vehicle with overheated brakes.

[0075] refer to Figure 6 As shown, the information display composite screen provides drivers with textual information prompts at different risk levels. It offers excellent visibility in all lighting conditions, and its visibility improves with increasing ambient light intensity, effectively avoiding the problem of poor LED performance under strong light. Even in low-light conditions at night, minimal fill light is required to achieve excellent visibility. The information display composite screen measures 1000mm (height) x 1500mm (width), with a screen dot pitch of P15.625. It is an integrated aluminum alloy casting design that supports short-circuit and open-circuit pixel detection and can display arbitrary text in red, yellow, or green. Operating voltage: 220V; operating temperature range: -40°C to 60°C; protection level: IP65; brightness: 8000cd / m²; horizontal viewing angle: 110°±10°; vertical viewing angle: 60°±10°; optimal viewing distance: 20-52m; service life: 100,000 hours; control method: TCP / IP network communication protocol control.

[0076] S9: Perform vehicle warning according to the warning level.

[0077] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A vehicle early warning method based on vehicle brake temperature monitoring, characterized in that: The vehicle early warning method based on vehicle brake temperature monitoring includes: S1: Obtain environmental data within the current thermal imaging temperature detection range; S2: Determine whether there is a vehicle in the environmental data. If so, proceed to S3; otherwise, return to S1; S3: Capture the vehicle to obtain a captured image; S4: extracting vehicle feature data from the captured image, wherein the vehicle feature data includes a license plate, a vehicle model, and a vehicle location; S5: Determine whether the vehicle model meets the requirements. If so, proceed to S6; otherwise, return to S1; S6: performing thermal imaging temperature detection on the vehicle brake within a thermal imaging temperature detection range to obtain thermal imaging detection temperature data; S7: Determine whether the vehicle in the captured image has left the current thermal imaging temperature detection range. If so, proceed to S8; otherwise, return to S3; S8: extracting and fusing the vehicle feature data and the thermal imaging detection temperature data to generate a warning level for the vehicle according to the thermal imaging detection temperature data; S9: Performing vehicle warning according to the warning level; In S8, generating the warning level of the vehicle according to the temperature data detected by thermal imaging includes: A1: Determine whether the temperature data detected by thermal imaging is less than or equal to a first preset temperature. If so, generate a warning; otherwise, proceed to A2; A2: Determine whether the temperature data detected by the thermal imaging is less than or equal to the second preset temperature. If so, generate a level 3 warning; otherwise, proceed to A3; A3: Determine whether the temperature data detected by the thermal imaging is less than or equal to a third preset temperature. If so, generate a second-level warning; otherwise, generate a first-level warning; The third-level warning is issued through a directional tweeter and an information release composite screen. Along the direction of the lane arrow mark, the directional tweeter is set 80 to 120 meters in front of the installation position of the high-definition card slot capture camera, and the installation height is 2.0 to 2.5 meters from the road surface. The center line of the sound beam is perpendicular to the road; along the direction of the lane arrow mark, the information release composite screen is set 150 to 200 meters in front of the installation position of the high-definition card slot capture camera; The secondary warning is issued through a directional tweeter, a warning light and an information release composite screen; along the direction of the lane arrow mark, the directional tweeter is arranged 80 to 120 meters in front of the installation position of the high-definition bayonet snapshot camera, the installation height is 2.0 to 2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; the warning light is arranged 20 to 40 meters in front of the installation position of the high-definition bayonet snapshot camera, facing the inside of the road, the center line of the warning light beam is at an angle of 135 degrees to the direction of vehicle travel, and the installation height is 1.5 to 2.0 meters from the road surface; along the direction of the lane arrow mark, the information release composite screen is arranged 150 to 200 meters in front of the installation position of the high-definition bayonet snapshot camera; The first-level warning is issued through a directional tweeter, a warning light and an information release composite screen; along the direction of the lane arrow mark, the directional tweeter is arranged 80~120m in front of the installation position of the high-definition card mount camera, and the installation height is 2.0~2.5 meters from the road surface, and the center line of the sound beam is perpendicular to the road; the warning light is arranged 50~70m in front of the installation position of the high-definition card mount camera, facing the inside of the road, the center line of the light beam of the warning light is at an angle of 135° to the vehicle's driving direction, and the installation height is 1.5~2.0 meters from the road surface; along the direction of the lane arrow mark, the information release composite screen is arranged 150~200m in front of the installation position of the high-definition card mount camera.

2. The vehicle early warning method based on vehicle brake temperature monitoring according to claim 1, characterized in that: The environmental data within the current thermal imaging temperature detection range is obtained by a thermal imaging temperature detector; The thermal imaging temperature detector is a high-frequency infrared thermal imager; The thermal imaging temperature detector is installed on a roadside pole close to the right side of the driving lane. The center line of the field of view of the thermal imaging temperature detector is perpendicular to the direction of vehicle travel and the installation height is 0.75 to 1.2 meters from the road surface.

3. The vehicle early warning method based on vehicle brake temperature monitoring according to claim 2, characterized in that: In S3, the vehicle is captured by a high-definition camera to obtain a captured image; The high-definition bayonet snapshot camera is installed on an L-shaped pole 30 meters in front of the thermal imaging temperature detector, and the installation height is 4 to 6 meters from the road surface. The high-definition bayonet snapshot camera has a virtual trigger line, which is set directly in front of the thermal imaging temperature detector; The thermal imaging temperature detector and the high-definition bayonet snapshot camera are connected to the terminal server via an outdoor network cable.

4. The vehicle early warning method based on vehicle brake temperature monitoring according to claim 1, characterized in that: The first preset temperature is 200°C; the second preset temperature is 260°C; and the third preset temperature is 300°C.

5. The vehicle early warning method based on vehicle brake temperature monitoring according to claim 1, characterized in that: The prompt warning is issued through an information release composite screen, along the direction of the lane arrow mark, and the information release composite screen is set 150~200m in front of the installation position of the high-definition card port capture camera.

6. The vehicle early warning method based on vehicle brake temperature monitoring according to claim 1, characterized in that: The warning light is a yellow flashing LED light that provides an early warning to the driver of a vehicle with overheated brakes by changing the flashing frequency.

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