Real-time agglomerate fog alarm device for mountain road and control method thereof

Abstract

The invention provides a real-time agglomerate fog alarm device for mountainous roads and a control method thereof, and belongs to the technical field of real-time agglomerate fog alarm. The real-time agglomerate fog alarm device comprises a plurality of visibility detection devices, an error auxiliary adjustment camera, a controller module, an audible and visual alarm and a solar power supply; the plurality of visibility detection devices and the error auxiliary adjustment camera are connected with the controller module, and the plurality of visibility detection devices respectively detect the visibility of different distance points of the mountain road.

Description

Technical Field

[0001] The invention relates to the technical field of real-time fog alarm, in particular to a real-time fog alarm device for mountain roads and a control method thereof. Background Art

[0002] Heavy fog significantly impacts transportation, and how to best address it is a key and challenging issue in transportation construction and development. Fog forms due to ground radiative cooling, which cools the air close to the road. Fog often appears within a localized area of ​​tens to hundreds of meters within the fog, characterized by denser fog, lower visibility, and more sudden onset. Therefore, how to monitor fog on a large scale to ensure the full effectiveness of driving safety guidance devices remains a crucial challenge.

[0003] Currently, instruments such as atmospheric transmissometers and visibility meters are used to monitor fog. However, these devices suffer from short monitoring ranges, providing visibility information only at the monitoring point. Furthermore, visibility meters typically use cameras and point-type visibility meters. Cameras only capture images within a specific field of view and cannot determine the location of fog. Point-type visibility meters only measure visibility at a specific point, generalizing from a single point to the entire area, and are unable to measure fog clusters. Especially in cases of uneven fog, localized rain, or snowstorms, camera and point-type visibility meters can easily produce inaccurate and misleading readings.

[0004] Since existing detection equipment often requires manual maintenance or management, on some remote mountain roads, there are relatively few people and it is impossible to manage the detection equipment in real time. At the same time, since the fog detection device is set on the roadside, the dust layer will affect the detection accuracy. Therefore, it is necessary to design a real-time fog alarm device for mountain roads and its control method. Summary of the Invention

[0005] The purpose of the present invention is to provide a real-time fog alarm device for mountain roads and a control method thereof, so as to solve the technical problems of existing real-time fog detection devices for roads, such as dust layer affecting detection accuracy and difficulty in manual maintenance.

[0006] At the same time, it effectively solves the real-time and reliability issues of fog warning in mountain roads without network environments, breaking through the deployment bottleneck caused by complex system architecture.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] A real-time fog alarm device for mountain roads includes several visibility detection devices, error-assisted adjustment cameras, a controller module, an audible and visual alarm, and a solar power supply. The several visibility detection devices and error-assisted adjustment cameras are all connected to the controller module. The several visibility detection devices respectively detect the visibility at different distance points on the mountain road. The error-assisted adjustment camera is used to judge whether there are moving targets in the air on the mountain road based on real-time collected video data, and then adjust the recognition data of the visibility detection device based on the recognized targets. The audible and visual alarm is connected to the controller module. When the visibility is lower than the set threshold, an audible and visual alarm is issued to notify vehicles on the mountain road. The solar power supply is used to respectively connect to the several visibility detection devices, error-assisted adjustment cameras, the controller module, and the audible and visual alarm for power supply.

[0009] Furthermore, visibility detection devices are set up starting from 2 km before and after the fog-prone sections, arranged at intervals of 500 m along the longitudinal direction of the mountain highway, and installed at a height of 2.5 m from the ground.

[0010] Furthermore, the visibility detection device includes a transmitting probe device and a receiving probe device. The transmitting probe device and the receiving probe device are arranged opposite to each other and are arranged on the same straight line.

[0011] Furthermore, the transmitting probe device includes a transmitting protection and calibration device and a light source transmitting head, and the receiving probe device includes a receiving protection and calibration device and a light source receiving head. The light source transmitting head and the light source receiving head are arranged on the same straight line, and the protection and calibration device is used for protection and automatic positioning and calibration.

[0012] Furthermore, the transmitting protection and calibration device and the receiving protection and calibration device both include a front-end cleaning device, a screw motor, a threaded hole plate, a screw, an upper baffle, an L-shaped frame plate and a front baffle. The upper baffle is arranged at the top of the light source transmitting head, and the L-shaped frame plate is sleeved on the side and lower end of the light source transmitting head. The front-end cleaning device is arranged at the front end of the light source transmitting head and moves up and down for cleaning. The front baffle is arranged at the front end of the front-end cleaning device. The screw motor is arranged on the upper baffle, one end of the screw is connected to the screw motor, the threaded hole plate is connected to the L-shaped frame plate, the screw is arranged through the threaded hole plate, the screw motor rotates to drive the screw to rotate, and the rotation of the screw drives the L-shaped frame plate to move up and down through the threaded hole plate. The front baffle and the front-end cleaning device are both connected to the L-shaped frame plate and are arranged as the L-shaped frame plate moves up and down.

[0013] Furthermore, the front-end cleaning device includes a cleaning brush, a brush motor and a brush support rod. The cleaning brush is arranged on the outside of the brush motor. The rotation of the brush motor drives the cleaning brush to rotate. The brush motor is arranged on the top of the brush support rod. The bottom of the brush support rod is connected to the L-shaped frame plate. The L-shaped frame plate moves up and down, driving the cleaning brush to move up and down. At the same time, when the cleaning brush rotates, the light source emitter head is cleaned.

[0014] Furthermore, the transmitting probe device and the receiving probe device work synchronously to perform regular detection of fog on mountain roads. When detection is not needed, the transmitting protection and calibration device and the receiving protection and calibration device are both in a closed state. When detection is needed, the transmitting protection and calibration device and the receiving protection and calibration device both move downward synchronously and then start detection. After the detection is completed, they are closed again to achieve real-time protection of the light source transmitting head and the receiving probe to avoid contamination by the dust layer. At the same time, the detection accuracy is improved by using a brush for cleaning during detection.

[0015] Furthermore, the working processes of the transmitting protection and calibration device and the receiving protection and calibration device are: when detection is required, the screw motor rotates to drive the screw to rotate forward, the threaded hole plate is threadedly connected to the screw, moves downward, and drives the L-shaped frame plate to move downward, the L-shaped frame plate drives the brush support rod and the front baffle to move downward, and at the same time the brush motor rotates to clean the light source transmitter head. When it lands at the bottom, the light source transmitter head starts to emit light to detect visibility. After the detection is completed, the screw motor rotates in the opposite direction to drive the L-shaped frame plate to move upward, and the front baffle closes the cleaning brush and the light source transmitter head inside to prevent dust from affecting the detection accuracy.

[0016] Furthermore, the error-assisted adjustment camera is directed to an interval detected by a visibility detection device. When the visibility detection device detects visibility, the error-assisted adjustment camera detects in real time whether there are objects larger than the corresponding scale moving, such as flying insects and raindrops, and then transmits the detection data to the controller to perform error correction on the detected visibility.

[0017] A control method for a real-time fog alarm device for mountain roads, wherein a visibility detection device periodically detects the visibility of mountain roads, and at the same time an error-assisted adjustment camera detects whether there are moving objects through video, and then makes a set error difference between the detected data and the visibility data to obtain the real visibility. When the visibility is lower than the set threshold, an audible and visual alarm is notified to sound an audible and visual alarm, notifying passing vehicles to slow down.

[0018] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0019] The present invention BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a block diagram of the alarm device module of the present invention;

[0021] Figure 2 1 is a schematic structural diagram of a visibility detection device according to the present invention;

[0022] Figure 3 It is a schematic diagram of the three-point positioning structure of the present invention.

[0023] In the accompanying drawings, 1-transmitting probe device, 2-receiving probe device, 3-cleaning brush, 4-screw motor, 5-threaded hole plate, 6-screw, 7-upper baffle, 8-L-shaped frame plate, 9-brush motor, 10-front baffle, 11-brush support rod, 12-light source transmitter head, 13-three-point positioning laser point. DETAILED DESCRIPTION

[0024] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and by way of preferred embodiments. However, it should be noted that many of the details listed in this specification are merely provided to help the reader gain a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be practiced even without these specific details.

[0025] like Figure 1 As shown, a real-time fog alarm device for mountain roads includes several visibility detection devices, error-assisted adjustment cameras, a controller module, an audible and visual alarm and a solar power supply. The several visibility detection devices and error-assisted adjustment cameras are all connected to the controller module. The several visibility detection devices respectively detect the visibility at different distance points on the mountain road. The error-assisted adjustment camera is used to judge whether there is a moving target in the air on the mountain road based on the real-time collected video data, and then adjust the recognition data of the visibility detection device according to the recognized target. The audible and visual alarm is connected to the controller module. When the visibility is lower than the set threshold, an audible and visual alarm is issued to notify vehicles on the mountain road. The solar power supply is used to respectively connect to the several visibility detection devices, error-assisted adjustment cameras, the controller module and the audible and visual alarm for power supply.

[0026] Control module: Also known as the signal processing unit, it uses an STM32F407 microcontroller with a built-in adaptive filtering algorithm. Threshold determination dynamically sets the visibility threshold (the default is 200 meters to trigger an alarm). Dynamic threshold algorithm: V_threshold = 200 × (1 + 0.05 × ΔT / 10), where ΔT is the temperature difference. Data filtering: Kalman filtering is used to eliminate rain and snow interference.

[0027] The solar panel has a tilt angle of 35° and a battery overcharge protection voltage of 28.4V. The device does not rely on an external network to achieve real-time warning.

[0028] In the embodiment of the present invention, the visibility detection device is installed starting from 2 km before and after the foggy section, arranged at intervals of 500 m along the mountain highway, and installed at a height of 2.5 m from the ground.

[0029] In the embodiment of the present invention, the visibility detection device includes a transmitting probe device 1 and a receiving probe device 2. The transmitting probe device 1 and the receiving probe device 2 are arranged opposite to each other and are arranged on the same straight line.

[0030] In an embodiment of the present invention, the transmitting probe device 1 includes a transmitting protection and calibration device and a light source transmitting head 12, and the receiving probe device 2 includes a receiving protection and calibration device and a light source receiving head. The light source transmitting head 12 and the light source receiving head are arranged on the same straight line, and the protection and calibration device is used for protection and automatic positioning and calibration.

[0031] In the embodiment of the present invention, Figure 2 As shown, the transmitting protection and calibration device and the receiving protection and calibration device both include a front-end cleaning device, a screw motor 4, a threaded hole plate 5, a screw 6, an upper baffle 7, an L-shaped frame plate 8 and a front baffle 10. The upper baffle 7 is arranged at the top of the light source emitting head 12, and the L-shaped frame plate 8 is sleeved on the side and lower end of the light source emitting head 12. The front-end cleaning device is arranged at the front end of the light source emitting head 12 and moves up and down for cleaning. The front baffle 10 is arranged at the front end of the front-end cleaning device, the screw motor 4 is arranged on the upper baffle 7, one end of the screw 6 is connected to the screw motor 4, the threaded hole plate 5 is connected to the L-shaped frame plate 8, the screw 6 is arranged through the threaded hole plate 5, the screw motor 4 rotates to drive the screw 6 to rotate, and the screw 6 rotates and drives the L-shaped frame plate 8 to move up and down through the threaded hole plate 5. The front baffle 10 and the front-end cleaning device are both connected to the L-shaped frame plate 8 and are arranged as the L-shaped frame plate 8 moves up and down.

[0032] In an embodiment of the present invention, the front-end cleaning device includes a cleaning brush 3, a brush motor 9 and a brush support rod 11. The cleaning brush 3 is arranged on the outside of the brush motor 9. The rotation of the brush motor 9 drives the cleaning brush 3 to rotate. The brush motor 9 is arranged on the top of the brush support rod 11. The bottom of the brush support rod 11 is connected to the L-shaped frame plate 8. The L-shaped frame plate 8 moves up and down, driving the cleaning brush 3 to move up and down. At the same time, when the cleaning brush 3 rotates, the light source emission head 12 is cleaned.

[0033] In an embodiment of the present invention, the transmitting probe device 1 and the receiving probe device 2 work synchronously to perform regular detection of fog on mountain roads. When detection is not required, the transmitting protection and calibration device and the receiving protection and calibration device are both in a closed state. When detection is required, the transmitting protection and calibration device and the receiving protection and calibration device both move downward synchronously and then start detection. After the detection is completed, they are closed again to achieve real-time protection of the light source transmitting head 12 and the receiving probe to avoid contamination by the dust layer. At the same time, the detection accuracy is improved by using a brush for cleaning during detection.

[0034] In the embodiment of the present invention, the working processes of the transmitting protection and calibration device and the receiving protection and calibration device are: when detection is required, the screw motor 4 rotates to drive the screw 6 to rotate forward, the threaded hole plate 5 is threadedly connected to the screw 6, moves downward, and drives the L-shaped frame plate 8 to move downward, the L-shaped frame plate 8 drives the brush support rod 11 and the front baffle 10 to move downward, and at the same time the brush motor 9 rotates to clean the light source emission head 12. When it falls to the bottom, the light source emission head 12 starts to emit light to detect visibility. After the detection is completed, the screw motor 4 rotates in the opposite direction to drive the L-shaped frame plate 8 to move upward, and the front baffle 10 closes the cleaning brush 3 and the light source emission head 12 inside to prevent dust from affecting the detection accuracy.

[0035] like Figure 3 As shown, three three-point positioning laser points 13 are set, and both the transmitting section and the receiving end are set with three. The laser transmitting point is set on the transmitting probe device 1, and the laser receiving point is set on the receiving probe device 2. Through the three-point positioning method, it is ensured that they are set on the same straight line.

[0036] In an embodiment of the present invention, the error-assisted adjustment camera is directed to an interval detected by a visibility detection device. When the visibility detection device detects visibility, the error-assisted adjustment camera detects in real time whether there are objects larger than a corresponding scale moving, such as flying insects and raindrops, and then transmits the detected data to a controller to perform error correction on the detected visibility.

[0037] A control method for a real-time fog alarm device for mountain roads, wherein a visibility detection device periodically detects the visibility of mountain roads, and at the same time an error-assisted adjustment camera detects whether there are moving objects through video, and then makes a set error difference between the detected data and the visibility data to obtain the real visibility. When the visibility is lower than the set threshold, an audible and visual alarm is notified to sound an audible and visual alarm, notifying passing vehicles to slow down.

[0038] Matters not covered by the present invention are known technologies.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A real-time fog alarm device for mountain roads, characterized by: It includes several visibility detection devices, error-assisted adjustment cameras, a controller module, an audible and visual alarm and a solar power supply. Several visibility detection devices and error-assisted adjustment cameras are connected to the controller module. Several visibility detection devices respectively detect the visibility at different distance points on the mountain road. The error-assisted adjustment camera is used to judge whether there are moving targets in the air on the mountain road based on real-time collected video data, and then adjust the recognition data of the visibility detection device according to the identified target. The audible and visual alarm is connected to the controller module. When the visibility is lower than the set threshold, an audible and visual alarm is issued to notify vehicles on the mountain road. The solar power supply is used to respectively connect to several visibility detection devices, error-assisted adjustment cameras, the controller module and the audible and visual alarm for power supply.

2. The real-time fog alarm device for mountain roads according to claim 1, characterized in that: Visibility detection devices are set up starting from 2 km before and after foggy sections, arranged at intervals of 500 m along the longitudinal direction of mountain roads, and installed at a height of 2.5 m from the ground.

3. The real-time fog alarm device for mountain roads according to claim 1, characterized in that: The visibility detection device comprises a transmitting probe device (1) and a receiving probe device (2), wherein the transmitting probe device (1) and the receiving probe device (2) are arranged opposite to each other and are arranged on the same straight line.

4. The real-time fog alarm device for mountain roads according to claim 3, characterized in that: The transmitting probe device (1) includes a transmitting protection and calibration device and a light source transmitting head (12); the receiving probe device (2) includes a receiving protection and calibration device and a light source receiving head; the light source transmitting head (12) and the light source receiving head are arranged on the same straight line; the protection and calibration device is used for protection and automatic positioning and calibration.

5. The real-time fog alarm device for mountain roads according to claim 4, characterized in that: The transmitting protection and calibration device and the receiving protection and calibration device both comprise a front end cleaning device, a screw motor (4), a threaded hole plate (5), a screw (6), an upper baffle (7), an L-shaped frame plate (8) and a front baffle (10), wherein the upper baffle (7) is arranged at the top end of the light source transmitting head (12), the L-shaped frame plate (8) is sleeved on the side and the lower end of the light source transmitting head (12), the front end cleaning device is arranged at the front end of the light source transmitting head (12), and moves up and down to clean, and the front baffle (10) is arranged at the front end cleaning The front end of the device is provided with a screw motor (4) arranged on an upper baffle (7), one end of a screw rod (6) is connected to the screw motor (4), a threaded hole plate (5) is connected to an L-shaped frame plate (8), the screw rod (6) is arranged through the threaded hole plate (5), the screw motor (4) rotates to drive the screw rod (6) to rotate, the screw rod (6) rotates through the threaded hole plate (5) to drive the L-shaped frame plate (8) to move up and down, the front baffle (10) and the front end cleaning device are both connected to the L-shaped frame plate (8), and are arranged to move up and down with the L-shaped frame plate (8).

6. The real-time fog alarm device for mountain roads according to claim 5, characterized in that: The front-end cleaning device comprises a cleaning brush (3), a brush motor (9) and a brush support rod (11); the cleaning brush (3) is arranged outside the brush motor (9); the brush motor (9) rotates to drive the cleaning brush (3) to rotate; the brush motor (9) is arranged on the top of the brush support rod (11); the bottom of the brush support rod (11) is connected to the L-shaped frame plate (8); the L-shaped frame plate (8) moves up and down to drive the cleaning brush (3) to move up and down; and when the cleaning brush (3) rotates, the light source emission head (12) is cleaned.

7. The real-time fog alarm device for mountain roads according to claim 5, characterized in that: The transmitting probe device (1) and the receiving probe device (2) work synchronously to perform regular detection of fog on mountain roads. When detection is not required, the transmitting protection and calibration device and the receiving protection and calibration device are both in a closed state. When detection is required, the transmitting protection and calibration device and the receiving protection and calibration device are both moved downward synchronously and then start detection. After the detection is completed, they are closed again, thereby achieving real-time protection of the light source transmitting head (12) and the receiving probe to avoid contamination by the dust layer. At the same time, the detection accuracy is improved by using a brush for cleaning during detection.

8. The real-time fog alarm device for mountain roads according to claim 5, characterized in that: The working processes of the transmitting protection and calibration device and the receiving protection and calibration device are as follows: when detection is required, the screw motor (4) rotates to drive the screw (6) to rotate in the forward direction, the threaded hole plate (5) is threadedly connected to the screw (6), moves downward, and drives the L-shaped frame plate (8) to move downward, the L-shaped frame plate (8) drives the brush support rod (11) and the front baffle (10) to move downward, and at the same time the brush motor (9) rotates to clean the light source emitting head (12), when it falls to the bottom, the light source emitting head (12) starts to emit light to detect visibility, when the detection is completed, the screw motor (4) rotates in the reverse direction to drive the L-shaped frame plate (8) to move upward, and the front baffle (10) closes the cleaning brush (3) and the light source emitting head (12) inside to prevent dust from affecting the detection accuracy.

9. The real-time fog alarm device for mountain roads according to claim 1, characterized in that: The error-assisted adjustment camera is aimed at the interval detected by a visibility detection device. When the visibility detection device detects visibility, the error-assisted adjustment camera detects in real time whether there are objects larger than the corresponding scale moving, such as flying insects and raindrops, and then transmits the detection data to the controller to perform error correction on the detected visibility.

10. The control method of the real-time fog alarm device for mountain roads according to claim 1, characterized in that: The visibility detection device regularly detects the visibility of mountain roads. At the same time, the error-assisted adjustment camera detects whether there are moving objects through video, and then makes a set error difference between the detection data and the visibility data to obtain the real visibility. When the visibility is lower than the set threshold, the sound and light alarm is notified to sound an alarm, notifying passing vehicles to slow down.

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