CN211403563U

CN211403563U - Road detection device that freezes based on video detection technique

Info

Publication number: CN211403563U
Application number: CN201922092084.7U
Authority: CN
Inventors: 贺德溪; 王飞; 邓怡亭
Original assignee: Anhui Landun Photoelectron Co Ltd
Current assignee: Anhui Landun Photoelectron Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-09-01
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a road detection device that freezes based on video detection technique, handle and core module, early warning module, humiture sensing module and wireless transmission module including transmission module, laser emission module, CCD. The road icing detection device adopting the structure is based on the mirror reflection principle, and utilizes the video detection technology to carry out video algorithm analysis on the reflected laser beam, thereby judging the icing and slippery condition of the road surface. The utility model discloses not only with low costs, the response is fast, the degree of accuracy is high, simultaneously because need not destroy road surface when the deployment, be convenient for install and maintain.

Description

Road detection device that freezes based on video detection technique

Technical Field

The utility model relates to a road traffic safety field especially relates to a road detection device that freezes based on video detection technique.

Background

At present, the traffic of China is rapidly developed, and the high-speed mileage is continuously increased. The development of traffic provides powerful assistance for the development of society, but meanwhile, various potential safety hazards are brought. Such as traffic road icing problems. The icing of the traffic road refers to the icing phenomenon caused by the fact that precipitation and the like touch the traffic ground of the road with the temperature lower than 0 ℃. Often including frozen snow residues, rough ice ruts, snow melt water or road water from other causes, a hard ice layer that forms during cold seasons. Under the condition of road icing, vehicle body slipping is easy to occur due to the fact that the friction coefficient between the vehicle tire and the road surface is greatly reduced, and therefore road traffic safety accidents are caused. Road icing generally occurs in a period of 11 months to 4 months in the next year, and road icing phenomena often occur in northern areas of China, particularly in northeast and northern inner Mongolia areas.

In order to effectively reduce road traffic safety accidents, some domestic research institutions and companies utilize different detection and monitoring methods to judge the road icing state by collecting partial road physical state parameters. The method is mainly divided into a non-contact type and a contact type according to whether the road is contacted or not, and a remote infrared road icing detector is mainly adopted by adopting a non-contact type method; the contact type road icing sensor mainly adopts a differential pressure type, a strain type, a vibration type, a capacitance type, a heat flow type, an ultrasonic type and an optical fiber type. The remote infrared monitoring method has high accuracy, but is not used in large scale due to expensive components, high energy consumption, difficult maintenance and the like. However, various contact methods have not been used in daily life and production for various reasons, such as stability, accuracy, durability, etc.

For example, publication numbers are: CN206601775U discloses an autonomous road icing and snow melting ablation system, which includes at least one group of ablation units, each group of ablation units includes at least one autonomous ablation system host and a plurality of injection systems, the autonomous ablation system host is disposed on one side of the same-direction lane of the highway, and the injection systems are respectively disposed on two sides of the same-direction lane of the highway at intervals; in the same group of ablation units, the autonomous ablation system host is in wireless signal connection with the plurality of injection systems; the autonomous ablation system host is used for detecting the thickness, the wet-skid coefficient and the ice and snow coverage rate of accumulated snow, accumulated water and accumulated ice in a detected area of the road surface and spraying an ablation agent to the detected area; the injection system is used for receiving the information of the detected area sent by the main ablation system host and injecting the snow-melting agent to the corresponding detected area. The autonomous road snow and ice melting system measures the road snow and ice conditions in real time, carries out early warning in advance, and actively carries out snow and ice melting. The technical scheme adopts the technology of laser detection wavelength differentiation, so that the detection distance is limited, and the equipment cost is high; meanwhile, the accumulated ice cannot be detected by grabbing the coverage of the accumulated snow by using a CCD image detector.

For another example, publication nos.: CN206210048U discloses a road icing monitoring and early warning system, which includes a road gateway connected with a back-end processing platform through a GPRS network or a wireless ad hoc network, where the road gateway is connected with a road icing monitoring sensor through a GPRS network or a wireless ad hoc network; the back-end processing platform is connected with the information early warning release terminal through a GPRS network or a wireless ad hoc network; the road icing monitoring sensor comprises a shell, a single chip microcomputer, an aluminum battery and a wireless radio frequency module, wherein the single chip microcomputer, the aluminum battery and the wireless radio frequency module are positioned in an inner cavity of the shell, an air temperature and humidity sensor is connected with the single chip microcomputer through a lead, a ground temperature sensor fixed on a bottom plate of the shell is connected with the single chip microcomputer through a lead, and a conductivity sensor or a capacitance sensor fixed on the bottom plate of the shell is connected with the single chip microcomputer. The utility model discloses because the advantage that structure and have is: the monitoring stability and accuracy are improved, the service life is prolonged, and the use cost is reduced. Above-mentioned technical scheme adopts the contact design, and not only life is short, and installation and maintenance are very troublesome simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough of prior art, provide a non-contact road detection device that freezes based on video detection technique.

The utility model adopts the technical proposal that: a road icing detection device based on a video detection technology comprises a reflection module, a laser emission module, a CCD processing and core module, an early warning module, a temperature and humidity sensing module and a wireless transmission module; the CCD processing and core module is respectively in signal connection with the laser emission module, the temperature and humidity sensing module and the wireless transmission module, and the wireless transmission module is in signal connection with the early warning module; the reflection module and the laser emission module are respectively positioned on two sides of a road, the laser emission module emits punctiform projection laser to the road, and the punctiform projection laser is reflected to the reflection module through the road surface; the CCD processing and core module comprises a CCD camera and a microprocessor, and the CCD camera is matched with the reflection module; the early warning module carries out sound-light alarm; the temperature and humidity sensing module collects the ambient temperature and relative humidity values; the wireless transmission module transmits signals to the early warning module and the background command center.

As a further improvement of the utility model, the reflection module is of an aluminum material, the surface roughness is Ra1.55-1.65, and the bottom plate is subjected to blackening treatment.

As a further improvement, the temperature and humidity sensing module is provided with a sleep temperature.

As a further improvement of the present invention, the CCD camera adopts a zoom lens.

The utility model discloses a beneficial effect be: the road icing detection device adopting the structure is based on the mirror reflection principle, and utilizes the video detection technology to carry out video algorithm analysis on the reflected laser beam, thereby judging the icing and slippery condition of the road surface. The utility model discloses not only with low costs, the response is fast, the degree of accuracy is high, simultaneously because need not destroy road surface when the deployment, be convenient for install and maintain.

Drawings

Fig. 1 is a schematic view of the present invention.

Fig. 2 is a schematic diagram of the present invention.

Shown in the figure: the system comprises a reflection module 1, a laser emission module 2, a CCD processing and core module 3, an early warning module 4, a temperature and humidity sensing module 5 and a wireless transmission module 6.

Detailed Description

The present invention will be further described with reference to fig. 1 and 2.

As shown in the figure, the road icing detection device based on the video detection technology comprises a reflection module 1, a laser emission module 2, a CCD processing and core module 3, an early warning module 4, a temperature and humidity sensing module 5 and a wireless transmission module 6; the CCD processing and core module 3 is respectively in signal connection with the laser emission module 2, the temperature and humidity sensing module 5 and the wireless transmission module 6, and the wireless transmission module is in signal connection with the early warning module 4;

the reflection module 1 and the laser emission module 2 are respectively positioned at two sides of a road, the laser emission module 2 emits punctiform projection laser to the road, and the punctiform projection laser is reflected to the reflection module 1 through the road surface; the device is based on the mirror reflection principle, the laser emitting module 2 directs laser beams to a road surface, when the road surface is frozen, the laser beams can be reflected to the reflecting module 1, and the CCD camera collects and visually analyzes the light spot condition on the reflecting module 1; the method is convenient for realizing computer programming and can carry out real-time updating and processing on data acquired on site, and the Kalman filtering is the most widely applied filtering method at present and is better applied to the fields of communication, navigation, guidance, control and the like. The expression is x (k) = A X (k-1) + B U (k) + w (k).

The CCD processing and core module 3 comprises a CCD camera and a microprocessor, and the CCD camera is matched with the reflection module; the CCD camera is kept horizontal, and the sampling position of the CCD camera is the position of the reflection module;

the early warning module 4 carries out sound-light alarm; the early warning module 4 receives the signal of the wireless transmission module 6 and provides sound and light warning, and is placed at a position 50-100 meters away from the vehicle;

the temperature and humidity sensing module 5 collects the ambient temperature and relative humidity values; the collected information is transmitted to a CCD processing and core module 3, and auxiliary support of road icing condition is provided for microprocessing;

the wireless transmission module 6 transmits signals to the early warning module 4 and the background command center, and the module transmits the signals to the early warning module and the background command center through 3/4G, WIFI and other transmission modes.

In order to further improve the using effect of the device, the reflection module 1 is made of aluminum material, the surface roughness is Ra1.55-1.65, and the bottom plate is subjected to blackening treatment.

In order to further improve the using effect of the device, the temperature and humidity sensing module 5 is provided with a dormancy temperature. On one hand, the temperature and humidity sensing module provides auxiliary support for the CCD processing and core module to judge road icing; on the other hand, when the temperature is higher than the adjacent temperature, the device can be judged to be in the condition of not freezing (the ambient temperature is higher than the freezing condition, for example, set to be 1 °), the device is directly closed, and the whole equipment enters a sleep state.

In order to further improve the using effect of the device, the CCD camera adopts a zoom lens, so that data can be more effectively collected and image analysis can be carried out.

In embodiment 1, a laser emission module, a CCD processing and core module, a temperature and humidity sensing module, and a wireless transmission module are integrated in a box and fixed to one side of a road guard rail. The laser emission module is aimed at the ground to be detected, and a CCD camera in the CCD processing and core module is kept horizontal; the early warning module is placed at a position 50-100 meters away from the approaching vehicle; the reflecting module is parallel to the integrated box body and fixed at the position of the protective fence opposite to the road, so that the point-shaped light spots reflected by the laser emitting module can be normally received; the device can adopt AC220V commercial power access and solar power access. The device has the advantages that the number of the detection lanes is not less than 4, and the working temperature is 60-minus 30 ℃.

The traditional method is to use an induction device buried under the road surface to judge whether the road is frozen or not, and at the moment, the road surface needs to be damaged, so that the device is buried. Not only the equipment is expensive, but also the road needs to be closed during installation, and the equipment is also needed during maintenance, so that the equipment is inconvenient to install and maintain.

The road icing detection device adopting the structure is based on the mirror reflection principle, utilizes the video detection technology to carry out video algorithm analysis on the reflected laser beam, thereby judging the icing and slippery condition of the road surface, transmitting information to the early warning device and the background command center in real time, and providing traffic management personnel for assisting command. And the vehicle can be prompted and warned to the vehicle driving personnel, so that the traffic accidents can be greatly reduced. The equipment has multiple functions of video analysis, data transmission, road early warning and the like. The utility model discloses not only with low costs, the response is fast, the degree of accuracy is high, simultaneously because need not destroy road surface when the deployment, be convenient for install and maintain.

It should be known to those skilled in the art that the protection scheme of the present invention is not limited to the above-mentioned embodiments, and various permutations, combinations and transformations can be performed on the basis of the above-mentioned embodiments, without violating the spirit of the present invention, all the transformations performed by the present invention fall within the protection scope of the present invention.

Claims

1. A road icing detection device based on a video detection technology is characterized by comprising a reflection module (1), a laser emission module (2), a CCD processing and core module (3), an early warning module (4), a temperature and humidity sensing module (5) and a wireless transmission module (6); the CCD processing and core module (3) is respectively in signal connection with the laser emission module (2), the temperature and humidity sensing module (5) and the wireless transmission module (6), and the wireless transmission module is in signal connection with the early warning module (4);

the reflection module (1) and the laser emission module (2) are respectively positioned at two sides of a road, the laser emission module (2) emits punctiform projection laser to the road, and the punctiform projection laser is reflected to the reflection module (1) through the road surface;

the CCD processing and core module (3) comprises a CCD camera and a microprocessor, and the CCD camera is matched with the reflection module;

the early warning module (4) performs sound-light alarm;

the temperature and humidity sensing module (5) collects the ambient temperature and relative humidity values;

the wireless transmission module (6) transmits signals to the early warning module (4) and the background command center.

2. The road icing detection device based on the video detection technology as claimed in claim 1, wherein the reflection module (1) is made of aluminum material, the surface roughness is Ra1.55-1.65, and the bottom plate is blackened.

3. The road icing detection device based on the video detection technology as claimed in claim 1, wherein the temperature and humidity sensing module (5) is provided with a sleep temperature.

4. The device for detecting the road icing based on the video detection technology as claimed in any one of claims 1 to 3, wherein the CCD camera adopts a zoom lens.