KR102188850B1 - Black Ice Analysis System Using Wireless Communication - Google Patents

Abstract

The present invention relates to a black ice analysis system using a wireless communication and a method thereof. According to the present invention, the black ice analysis system comprises: at least one image photographing apparatus including a photographing unit photographing a road on which black ice can be generated; a sensor measuring weather information on the roads where the black ice can be generated; a transmitter managing and transmitting an image signal acquired from the road; and a server determining whether black ice is generated through information transmitted from the transmitter. The transmitter comprises: a data receiving unit including an image receiving unit receiving the image signal photographed by the image photographing apparatus; a data processing unit receiving the image signal from the data receiving unit and processing the image signal into a wireless signal; a wireless transmitting/receiving unit transmitting the wireless signal transferred from the data processing unit; and a transmission control unit controlling the data receiving unit, the data processing unit, and the wireless transmission/reception unit. Accordingly, a road where black ice can be generated is photographed even in a low visibility environment, the photographed image signal and the detection signal measured by the sensor are converted into a digital signal, the digital signal is stably transmitted to a remote server through wireless communications, and the server determines whether black ice is generated on the road based on the transmitted digital signal, thereby effectively informing the determination result to the safety managers and drivers.

Description

Black Ice Analysis System Using Wireless Communication

The present invention relates to a black ice analysis system and method thereof using wireless communication, and more particularly, at least one image capturing apparatus including a photographing unit for photographing a road in which black ice can be generated, in which black ice is to be generated. A sensor that measures weather information of a road that can be used, a transmission device that manages and transmits an image signal acquired from the road, and a server that determines whether black ice is generated through the information transmitted from the transmission device, and the transmission device Is a data receiving unit having an image receiving unit receiving an image signal photographed by the image capturing device, a data processing unit receiving and processing an image signal from the data receiving unit and processing it into a wireless signal, and transmitting a wireless signal transmitted from the data processing unit. Including the wireless transmission/reception unit and the data reception unit, the data processing unit, and the transmission control unit for controlling the wireless transmission/reception unit, photographs a road where black ice can be generated even in a low visibility environment, and a photographed image signal and a detection signal measured by a sensor Is converted into a digital signal and stably transmitted to a server located at a distance through wireless communication, and the server determines whether black ice is generated on the road based on the transmitted digital signal, thereby effectively notifying safety managers and drivers. It relates to a black ice analysis system using communication and its method.

On winter roads, rain or snow freezes due to contaminants such as dust, and the ice is very thin and transparent, so it looks black because of the black asphalt. The thickness is also very thin and it is difficult to distinguish between the asphalt and the naked eye. It causes. There are many problems on highways, such as black ice causing high-speed vehicles to slip and collisions.

In order to solve this problem, a device for detecting black ice has been developed and used. As can be seen in the conventional black ice detection device 900 shown in FIG. 1, a detection unit 910 is installed in the front of the vehicle to detect the black ice 81 generated on the road Although the temperature is measured, it is difficult to determine whether black ice is generated by simply measuring the temperature, the detection range is not wide, and on a highway, even if black ice is detected in the front, it is difficult to avoid this because the vehicle is in a high speed state. . In addition, even in the case of a black ice detection device that detects whether black ice is generated on the road near the road, it is judged whether black ice is generated only with the temperature and humidity of the road surface and the temperature of the surrounding atmosphere. It is uncertain and causes discomfort.

Therefore, a black ice determination system is required that determines whether black ice is generated through the overall image of the road where black ice is generated and the surrounding weather information, but has high predictive consistency through machine learning on whether black ice is generated in the central server. do.

Korean Patent Publication No. 10-2019-0140272 (2019.12.19)

The present invention was devised to solve the above problems,

It is an object of the present invention to provide at least one image capturing apparatus having a photographing unit for photographing a road in which black ice can be generated and a filter unit for supplementing an image photographed from the photographing unit, A sensor that measures information, a transmission device that manages and transmits an image signal acquired from a road, and a server that determines whether black ice is generated through the information transmitted from the transmission device, wherein the transmission device includes the image photographing device A data receiving unit having an image receiving unit receiving an image signal photographed by the data receiving unit, a data processing unit receiving and processing an image signal from the data receiving unit and processing it into a wireless signal, a wireless transmitting and receiving unit transmitting a radio signal transmitted from the data processing unit, and Including the data receiving unit, the data processing unit, and the transmission control unit that controls the wireless transmitting and receiving unit, photographs a road where black ice can be generated even in a low visibility environment, and converts the captured image signal and the detection signal measured by the sensor into a digital signal. Black ice using wireless communication that can effectively inform safety managers and drivers by determining whether black ice is generated on the road based on the transmitted digital signal and stably transmits it to a remote server through wireless communication. It is to provide an analysis system.

It is an object of the present invention to provide a data processing unit having an image processing unit that converts and compresses an analog image signal received from a data receiving unit into a digital signal, and receives the compressed digital image signal from the data processing unit to a wireless signal. It is to provide a black ice analysis system using wireless communication that transmits a captured image by wirelessly connecting a transmission device and a server including a wireless processing unit to process.

An object of the present invention is, the data receiving unit further comprises a sensor receiving unit for additionally receiving a detection signal for weather information around the road detected by the sensor, and the data processing unit receives and receives a detection signal from the data receiving unit. Further comprising a sensor processing unit for converting and compressing the sensing signal into a digital signal, wherein the wireless processing unit provides a black ice analysis system using wireless communication that receives the compressed sensing signal from the data processing unit and processes it as a wireless signal. will be.

It is an object of the present invention, the transmission control unit further comprises a frame adjustment unit for adjusting the frame time interval of the digital image signal converted by the image processing unit, the image processing unit converts the image signal transmitted from the data receiving unit into a digital image signal Including an image conversion module, a compression module that compresses the digital image signal converted by the image conversion module, and an image adjustment module that adjusts the image signal according to the frame time interval determined by the frame adjustment unit. It is to provide a black ice analysis system using wireless communication that can stably transmit images and reduces the capacity of the transmitted image signal by lowering the frame of the captured image.

An object of the present invention is that the sensor receiver transmits the weather information detected by the sensor to the transmission control unit, and the frame controller generates black ice by adjusting the frame time interval when the black ice generation condition is met according to the transmitted weather information. It is to provide a black ice analysis system using wireless communication that can more accurately determine whether black ice is generated under this easy condition.

An object of the present invention is, the wireless transmission and reception unit transmits the bandwidth and/or throughput of the radio signal transmission to the transmission control unit, and the frame adjustment unit adjusts the frame time interval according to the transmitted bandwidth and/or throughput according to the network connection environment. It is to provide a black ice analysis system using wireless communication that can adjust the capacity of transmitted filter image signals.

An object of the present invention is to use wireless communication capable of converting an image signal transmitted from a data receiving unit to a digital image according to a frame time interval determined by the frame adjusting unit to determine whether black ice is generated as a digital image with a small capacity. It is to provide a black ice analysis system.

An object of the present invention is, the wireless transmission and reception unit includes at least one of an LTE module having a wireless communication method of the LTE standard, and an optical communication module of the Ethernet standard through an optical cable, and the wireless processing unit transmits a compressed digital image signal and a detection signal to a wireless signal. And a signal detection module that detects the strength of wireless signals and transmits them to the transmission control unit, and the wireless conversion module converts compressed digital signals and detection signals into LTE wireless signals or optical communication wireless signals. However, by determining the conversion method of the wireless conversion module according to the intensity information of the signal detection module to provide a black ice analysis system using wireless communication in which transmission efficiency of the image signal and the detection signal is guaranteed.

An object of the present invention is that the transmission control unit checks the wireless communication connection status between the transmitting device and the server at regular intervals, and automatically performs wireless communication reconnection when the wireless communication connection is disconnected, and a camera according to a retransmission instruction from the server. By further including a retransmission unit that acquires the image signal captured by the image signal and the detection signal sensed by the sensor and transmits it to the server, it can be automatically connected immediately even if the connection is disconnected due to wireless communication instability. It is to provide a black ice analysis system using wireless communication that can be transmitted.

An object of the present invention is a server is a wireless communication unit that receives a digital signal through wireless communication with a wireless transmission and reception unit, a data management unit that converts the digital signal transmitted from the wireless communication unit into a storable signal, and the converted data management unit A storage unit for storing digital signals and a reception control unit for controlling the server, wherein the reception control unit determines whether or not black ice is generated, a network monitoring module that checks data transmission from a transmission device connected to the server. It is to provide a black ice analysis system using wireless communication that determines and manages whether black ice is generated on a road including a transmission result transmission module.

It is an object of the present invention, the server further comprises a machine learning unit for generating a prediction model for whether or not black ice of the digital signal transmitted through machine learning, the machine learning unit for generating black ice from the transmitted digital signal. The learning module, including a variable extraction module for extracting elements, an algorithm selection module for selecting at least one algorithm among a plurality of algorithms for machine learning, and a learning module for performing machine learning using the selected algorithm or a combination of algorithms. It is to provide a black ice analysis system using wireless communication with improved prediction consistency by determining whether black ice is generated through the prediction model derived from

An object of the present invention is a reception control unit comprising a reception control module for transmitting a command for controlling a data reception period from a transmission device connected to the server, and a transmission control unit of the transmission device determines the radio signal transmission period of the wireless transmission and reception unit. It is to provide a black ice analysis system using wireless communication to prevent data transmission overload from a server from a transmission device by further including a transmission control unit to adjust the data transmission period.

An object of the present invention, the reception control unit further comprises a feature selection module for extracting a black ice generation condition from a prediction model for black ice generation derived from the machine learning unit, wherein the feature selection module is connected to the server The extracted black ice generation condition is transmitted, and the transmission control unit of the transmission device further includes a selection unit for selecting the converted digital signal based on the transmitted black ice generation condition, wherein the selection unit It is to provide a black ice analysis system using wireless communication in which only digital signals are transmitted to the server to extract and analyze an environment in which black ice is well generated, and receive only data necessary for black ice generation and reading.

An object of the present invention is to further include a salt water spray device for preventing the generation of black ice on a road, wherein the salt water spray device sprays salt water when the weather condition detected by the sensor meets the set weather condition, and transmits the result. Provides a black ice analysis system using wireless communication that prevents the generation of black ice by spraying salt water when black ice is generated on the road depending on whether black ice transmitted from the module is generated or not. will be.

The present invention is implemented by an embodiment having the following configuration in order to achieve the above object.

According to an embodiment of the present invention, the present invention provides a photographing unit for photographing a road in which black ice can be generated, at least one image photographing apparatus having a filter unit that supplements an image photographed from the photographing unit, and black ice. A sensor that measures weather information of a road that can be generated, a transmission device that manages and transmits an image signal acquired from the road, and a server that determines whether black ice is generated through the information transmitted from the transmission device, the The transmission device includes a data receiving unit having an image receiving unit receiving an image signal photographed by the image photographing device, a data processing unit receiving and processing an image signal from the data receiving unit and processing it into a wireless signal, and a radio signal transmitted from the data processing unit. And a transmission control unit for controlling the wireless transmission/reception unit for transmitting the data and the data reception unit, the data processing unit, and the wireless transmission/reception unit.

According to an embodiment of the present invention, the data processing unit includes a data processing unit having an image processing unit for converting and compressing the analog image signal received from the data receiving unit into a digital signal, and the compressed digital image signal It characterized in that it comprises a wireless processing unit that receives from the study and processes the wireless signal.

According to an embodiment of the present invention, the data receiving unit further includes a sensor receiving unit for additionally receiving a detection signal for weather information around a road detected by a sensor, and the data processing unit is the data receiving unit Further comprising a sensor processing unit for receiving the detection signal from the received detection signal and converting and compressing the received detection signal into a digital signal, wherein the wireless processing unit receives the compressed detection signal from the data processing unit and processes it as a wireless signal. do.

According to an embodiment of the present invention, the transmission control unit further comprises a frame adjustment unit for adjusting a frame time interval of the digital image signal converted by the image processing unit, and the image processing unit is an image signal transmitted from the data receiving unit. A video conversion module for converting a digital video signal, a compression module for compressing the digital video signal converted by the video conversion module, and an image adjustment module for adjusting the video signal according to the frame time interval determined by the frame adjustment unit. It is characterized.

According to an embodiment of the present invention, according to the present invention, the sensor receiver transmits the weather information detected from the sensor to the transmission control unit, and the frame control unit corresponds to the black ice generation condition according to the transmitted weather information. It is characterized by adjusting the spacing.

According to an embodiment of the present invention, in the present invention, the wireless transmitter/receiver transmits a bandwidth and/or throughput of a radio signal transmission to the transmission control unit, and the frame controller determines a frame time interval according to the transmitted bandwidth and/or throughput. It is characterized by adjusting.

According to an embodiment of the present invention, the image adjustment module converts the image signal transmitted from the data receiver into a digital image according to a frame time interval determined by the frame adjustment unit.

According to an embodiment of the present invention, the wireless transmission and reception unit includes at least one of an LTE module having a wireless communication method of the LTE standard, and an optical communication module of the Ethernet standard through an optical cable, and the wireless processing unit is a compressed digital image. It includes a wireless conversion module that processes signals and detection signals into wireless signals, and a signal detection module that senses the strength of surrounding wireless signals and transmits them to a transmission control unit, and the wireless conversion module converts the compressed digital signals and detection signals into LTE wireless signals. A signal or optical communication wireless signal is converted, and the conversion method of the wireless conversion module is determined according to the intensity information of the signal detection module.

According to an embodiment of the present invention, the present invention provides a wireless communication unit for receiving a digital signal through wireless communication with a wireless transmission and reception unit, a data management unit for converting a digital signal transmitted from the wireless communication unit into a storable signal, A storage unit for storing the digital signal converted by the data management unit and a reception control unit for controlling the server, and the reception control unit includes a network monitoring module for checking data transmission from a transmission device connected to the server, and black ice It characterized in that it comprises a result transmission module for transmitting the determination on whether to generate.

According to an embodiment of the present invention, the server further includes a machine learning unit that generates a prediction model for whether a digital signal transmitted through machine learning is black ice generated, and the machine learning unit A variable extraction module that extracts elements related to black ice generation from signals, an algorithm selection module that selects at least one algorithm among a plurality of algorithms for machine learning, and a learning module that performs machine learning using the selected algorithm or a combination of algorithms. Including, it characterized in that it determines whether or not black ice is generated through the prediction model derived from the learning module.

According to an embodiment of the present invention, the reception control unit further includes a reception control module for transmitting a command for controlling a data reception period from a transmission device connected to the server, and a transmission control unit of the transmission device Is characterized in that it further comprises a transmission control unit for adjusting the radio signal transmission period of the wireless transmission and reception unit.

According to an embodiment of the present invention, the reception control unit further includes a feature selection module for extracting a black ice generation condition from a prediction model for black ice generation derived from a machine learning unit, and the feature selection module Transmits the extracted black ice generation condition to the transmission device connected to the server, and the transmission control unit of the transmission device further includes a selection unit for selecting the converted digital signal based on the transmitted black ice generation condition, wherein the selection The unit is characterized in that the wireless transmission/reception unit transmits only the selected digital signal to the server.

The present invention further includes a salt water spray device for preventing the generation of black ice on the road, wherein the salt water spray device sprays salt water when the weather condition detected by the sensor satisfies the set weather condition, and from the result transmission module It is characterized in that salt water is sprayed when black ice is generated on the road depending on whether the transmitted black ice is generated.

The present invention can obtain the following effects by the configuration, combination, and use relationship that will be described below with the present embodiment.

The present invention provides at least one image capturing apparatus having a photographing unit for photographing a road where black ice can be generated, a filter unit for supplementing an image photographed from the photographing unit, and weather information of a road where black ice can be generated. A sensor to measure, a transmission device that manages and transmits the image signal acquired from the road, and a server that determines whether black ice is generated through the information transmitted from the transmission device, wherein the transmission device is configured by the image capturing device. A data receiving unit having an image receiving unit receiving a photographed image signal, a data processing unit receiving and processing an image signal from the data receiving unit and processing it into a wireless signal, a wireless transmitting/receiving unit transmitting a radio signal transmitted from the data processing unit, and the data It photographs a road where black ice can be generated, including a receiver, a data processing unit, and a transmission control unit that controls the wireless transmission/reception unit, and converts the captured image signal and the sensing signal measured by the sensor into a digital signal to reach a long distance through wireless communication. The effect of providing a black ice analysis system using wireless communication that stably transmits to the located server, and the server determines whether black ice is generated on the road based on the transmitted digital signal and informs safety managers and drivers effectively. Have.

In the present invention, the data processing unit includes a data processing unit having an image processing unit that converts and compresses the analog image signal received from the data receiving unit into a digital signal, and receives the compressed digital image signal from the data processing unit and processes it as a wireless signal. Including a wireless processing unit, the transmission device and the server are wirelessly connected and the captured image is transmitted.

In the present invention, the data receiving unit further includes a sensor receiving unit for additionally receiving a detection signal for weather information around the road detected by the sensor, and the data processing unit receives a detection signal from the data receiving unit and received a detection signal. Further comprising a sensor processing unit for converting and compressing the digital signal, wherein the wireless processing unit has the effect of providing a black ice analysis system using wireless communication that receives the compressed detection signal from the data processing unit and processes it as a wireless signal. Make up.

In the present invention, the transmission control unit further includes a frame adjustment unit for adjusting a frame time interval of the digital image signal converted by the image processing unit, and the image processing unit converts the image signal transmitted from the data receiving unit into a digital image signal. Including a module, a compression module for compressing the digital image signal converted by the image conversion module, and an image adjustment module for adjusting the image signal according to the frame time interval determined by the frame adjustment unit, to produce a clear image without being affected by signal noise. It derives the effect of providing a black ice analysis system using wireless communication that can stably transmit and reduce the capacity of the transmitted image signal by lowering the frame of the captured image.

In the present invention, the sensor receiving unit transmits the weather information detected from the sensor to the transmission control unit, and the frame adjustment unit adjusts the frame time interval according to the transmitted weather information when the black ice generation condition is satisfied to facilitate black ice generation. It has the effect of determining whether or not black ice is generated in more detail under conditions.

In the present invention, the wireless transmitter/receiver transmits the bandwidth and/or throughput of radio signal transmission to the transmission control unit, and the frame controller adjusts the frame time interval according to the transmitted bandwidth and/or throughput to be transmitted according to the network connection environment. It has the effect of providing a black ice analysis system using wireless communication that can adjust the capacity of the filter image signal.

In the present invention, the image adjusting module converts the image signal transmitted from the data receiving unit into a digital image according to the frame time interval determined by the frame adjusting unit, thereby determining whether black ice is generated as a digital image having a small capacity.

In the present invention, the wireless transmission and reception unit includes at least one or more of an LTE module having a wireless communication method of the LTE standard, and an optical communication module of the Ethernet standard through an optical cable, and the wireless processing unit processes a compressed digital image signal and a detection signal as a wireless signal. And a signal detection module that detects the strength of wireless signals around and transmits them to the transmission control unit, wherein the wireless conversion module converts the compressed digital signal and the detection signal into an LTE wireless signal or an optical communication wireless signal, It is possible to provide a black ice analysis system using wireless communication in which transmission efficiency of an image signal and a detection signal is guaranteed by determining a conversion method of the wireless conversion module according to the intensity information of the signal detection module.

In the present invention, the transmission control unit checks the wireless communication connection state between the transmitting device and the server at regular intervals, and automatically performs wireless communication reconnection when the wireless communication connection is disconnected, and the camera by the camera according to the retransmission instruction from the server. By further including a retransmission unit that acquires the captured image signal and the detection signal sensed by the sensor and transmits it to the server, it can be automatically connected immediately even if the connection is disconnected due to wireless communication instability, so that the state of the road can be transmitted in real time without interruption. Provides a possible effect.

In the present invention, a server is a wireless communication unit that receives a digital signal through wireless communication with a wireless transmission and reception unit, a data management unit that converts a digital signal transmitted from the wireless communication unit into a storable signal, and a digital signal converted by the data management unit. It provides an effect of providing a black ice analysis system using wireless communication that determines and manages whether black ice is generated on the road, including a storage unit for storing the data and a reception control unit for controlling the server.

In the present invention, the server further comprises a machine learning unit that generates a prediction model for whether or not black ice is generated from a digital signal transmitted through machine learning, and the machine learning unit provides an element related to black ice generation from the transmitted digital signal. Derived from the learning module, including a variable extraction module to be extracted, an algorithm selection module that selects at least one algorithm among a plurality of algorithms for machine learning, and a learning module that performs machine learning using the selected algorithm or a combination of algorithms. A black ice analysis system using wireless communication with improved prediction consistency is provided by determining whether black ice is generated through the predicted model.

In the present invention, the reception control unit is a network monitoring module that checks data transmission from a transmission device connected to the server, a result transmission module that transmits a determination on whether black ice is generated, and receives data from a transmission device connected to the server. And a reception control module configured to transmit a command for controlling a period, and the transmission control unit of the transmission device further comprises a transmission control unit for adjusting a transmission period of a radio signal of the wireless transmission and reception unit. Avoid data transmission overload.

In the present invention, the reception control unit further includes a feature selection module for extracting a black ice generation condition from a prediction model for black ice generation derived from a machine learning unit, wherein the feature selection module is extracted to a transmission device connected to the server. The black ice generation condition is transmitted, and the transmission control unit of the transmission device further includes a selection unit for selecting the converted digital signal based on the transmitted black ice generation condition, wherein the selection unit It is accompanied by the effect of providing a black ice analysis system using wireless communication that extracts and analyzes the environment in which black ice is well generated by transmitting the bay to the server, and receives only data necessary for black ice generation and reading.

The present invention further includes a salt water spray device for preventing the generation of black ice on the road, wherein the salt water spray device sprays salt water when the weather condition detected by the sensor satisfies the set weather condition, and from the result transmission module When black ice is generated on the road depending on whether or not the transmitted black ice is generated, it is possible to prevent the black ice from being generated or to remove the black ice by spraying brine.

1 is a view showing a conventional black ice detection device
2 is a view illustrating a black ice analysis system 1 using wireless communication according to an embodiment of the present invention
3 is a block diagram of a black ice analysis system using wireless communication according to an embodiment of the present invention
4 is a diagram illustrating a black ice analysis system using wireless communication for a plurality of roads according to an embodiment of the present invention
5 is a block diagram of a transmission device 40 according to an embodiment of the present invention
6 is a block diagram of an image processing unit 431a according to an embodiment of the present invention
FIG. 7 is a diagram showing the image processing unit 431a adjusting the frame of the image signal according to the detected signal from the sensor receiving unit 413 and the bandwidth and throughput recognized by the wireless transmitting and receiving unit 45
8 is a block diagram showing a transmitting device and a server according to another embodiment of the present invention
9 is a block diagram showing a transmitting device and a server according to another embodiment of the present invention
10 is a block diagram of a server 50 according to an embodiment of the present invention

Hereinafter, preferred embodiments of the black ice analysis system and method using wireless communication according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. Unless otherwise defined, all terms in this specification are the same as the general meanings of the terms understood by those of ordinary skill in the art to which the present invention belongs, and in case of conflict with the meanings of terms used in the present specification, the present disclosure According to the definitions used in the specification.

Throughout the specification, when a part "includes" a certain component, this does not exclude other components unless otherwise stated, it means that other components may also be included. Terms such as "~ unit" and "~ module" described herein mean units that process at least one or more functions or operations, which may be implemented by hardware or software or a combination of hardware and software. That an element is "connected" with another element may be directly connected, but does not exclude connection through another element, and may include a concept in which data is transmitted through wireless communication. Hereinafter, the present invention will be described in detail by describing a preferred embodiment of the present invention with reference to the accompanying drawings.

2 is a diagram illustrating a black ice analysis system 1 using wireless communication according to an embodiment of the present invention, and FIG. 3 is a block diagram of a black ice analysis system using wireless communication according to an embodiment of the present invention to be. 2 and 3, the black ice analysis system 1 using wireless communication photographs a road in which black ice can be generated even in a low visibility environment, and captures a photographed image signal and a detection signal measured by a sensor. It converts into a digital signal and transmits it stably to a server located at a distance through wireless communication, and the server determines whether black ice is generated on the road based on the transmitted digital signal, and can effectively inform safety managers and drivers. To do. The black ice analysis system 1 using the wireless communication includes an image capturing device 10, a sensor 20, a power supply device 30, a transmission device 40, and a server 50.

First, black ice 81 may be generated by forming a thin ice film on the road 80 as if rain or snow was combined with contaminants such as dust and coated on the road surface. Black ice 81 is a cause of many accidents because it is difficult to distinguish it from the road with the naked eye in a running car.

The image capturing apparatus 10 photographs an image of a road in which black ice may be generated in order to determine whether black ice is generated. The image capturing apparatus 10 includes a photographing unit 11 and a filter unit 13.

The photographing unit 11 is a device for photographing the road 80 and is not limited to a camera, but is a concept including various image photographing devices capable of photographing a road. In addition, it is not excluded that a plurality of the photographing units 11 may be installed on a single road, and a photographed image signal may be transmitted to the transmission device 40. In the present invention, the photographing unit 11 may include a digital camera capable of photographing a plurality of analog or HD-SDI, Ethernet images, and may be connected to the transmission device 40 by wire. The photographing unit 11 may be a camera that increases a visibility distance in a general low visibility situation, such as a thermal imaging camera and a night vision infrared camera.

The filter unit 13 may be provided to supplement an image captured by the photographing unit 11. In a low-visibility situation, the image signal captured from the photographing unit 11 may be blurred or incomplete, and the black ice generation determination may not be smooth with this image signal, so the filter unit 13 supplements the image signal. By sending it to the server 50, it is possible to accurately determine the generation of black ice. Particularly, the filter unit 13 may be provided to remove fog from an image signal captured by the photographing unit 11 in a weather condition in which fog or sea fog is present.

The sensor 20 may sense various detection signals related to road safety and transmit the sensed detection signals to the transmission device 40. Therefore, the sensing signal transmitted by the sensor includes meteorological information such as temperature and humidity required for formation of black ice, and weather information such as fog, sea fog, fine dust, and luminous intensity for the visibility state photographed from the image capturing device 10. Can be included. In the present invention, the sensor 20 may include at least one sensor among a plurality of sensors such as a temperature sensor, a humidity sensor, a light intensity sensor, and a fine dust sensor. The sensed weather conditions may be converted through a predetermined method and then transmitted to the server 50, or may be used for a control operation in the transmission control unit 40 to spray salt water on the road when a predetermined condition is satisfied, as described later. .

The salt water spraying device 21 is provided to prevent black ice from being generated on the road, or to spray salt water to remove the generated black ice. Since black ice has a rapid increase in the risk of an accident, the salt water spraying device 21 sprays salt water onto the road so as to suppress the generation of black ice or to remove the black ice. The salt water spray device 21 may spray salt water through a salt water spray command from the control management unit 471 to be described later. The control management unit 471, which will be described later, operates the salt spray device 21 when it is determined that the weather condition sensed through the sensor 20 satisfies the condition in which the preset black ice can be generated. In addition, the salt spray device 21 may be operated through the result transmitted from the server 50.

The power supply device 30 is provided to supply power to the image capturing device 10, the sensor 20, and the transmission device 40. In an embodiment of the present invention, the black ice analysis system 1 may be installed like a street light to receive power from a street light power supply device. Since the image capturing device 10 is installed together on the lighting portion of the street light, a height for photographing a road may be secured.

In another embodiment of the present invention, the power supply device 30 may supply power by a solar system, and when irradiation of sunlight is incomplete, from both the solar system and the street light power supply device for additional power supply. It can also be powered.

4 is a diagram illustrating a black ice analysis system using wireless communication for a plurality of roads according to an embodiment of the present invention, and FIG. 5 is a block diagram of a transmission device 40 according to an embodiment of the present invention. . Referring to FIGS. 4 and 5, a plurality of transmission devices 40 and a plurality of transmission devices 40 receiving image signals and detection signals from the image photographing apparatus 10 and sensors 20 respectively installed on a plurality of roads. A server 50 that receives, stores, and manages a wireless signal transmitted from) is described. Here, the server 50 may perform a management server function capable of comprehensively managing safety conditions for a plurality of roads by analyzing the transmitted wireless signal.

The transmission device 40 manages and transmits the image signal acquired from the road so that the server 50 can determine whether black ice is generated on the road. The transmission device 40 includes a data receiving unit 41 receiving data on a road, a data processing unit 43 receiving and processing an image signal from the data receiving unit 41 and processing it into a wireless signal, and the data processing unit 43 ), and a transmission control unit 47 for controlling the data receiving unit 41, the data processing unit 43, and the wireless transmitting and receiving unit 45.

Referring to FIG. 5, the data receiving unit 41 is connected to the image capturing device 10 to receive an image signal photographed by the image capturing device 10, and the image receiving unit 411 is connected to the sensor. It includes a sensor receiving unit 413 that receives a sensed signal to be sensed.

The image receiving unit 411 is connected to the image photographing apparatus 10 by wire, and is controlled by the transmission control unit 47 and may receive SD analog images or HD-DSI image signals of multiple channels. Therefore, by configuring a CCTV system in which analog cameras, digital, and HD cameras are mixed and managed with one integrated IP address, it is possible to install and maintain a number of CCTV systems at an economical cost.

The sensor receiving unit 413 is connected to one or more sensors 30 by wire, and is controlled by the transmission control unit 47 and includes detection signals for weather information such as temperature and humidity, fog, sea mist, fine dust, light intensity, etc. At least one detection signal may be input from a detection signal for weather information. The sensor 20 may be implemented as various types of sensors in connection with the generation of black ice on the road, and may include both analog sensors and digital sensors. Therefore, when the sensor receiving unit 413 receives the analog detection signal under the control of the transmission control unit 47, the analog detection signal is transmitted to the sensor processing unit 431b, and the sensor receiving unit 413 receives the digital detection signal. The digital sensing signal may be directly transmitted to the wireless processing unit 433 to be described later together with the compressed digital signal.

The data processing unit 43 processes the data transmitted from the data receiving unit 41 to be transmitted to the server 50 and converts the data into a wireless signal. To this end, the data processing unit 43 includes a data processing unit 431 and a wireless processing unit 433, and may be implemented to be configured as one unit by being simultaneously processed by a transmission control unit 47 to be described later.

The data processing unit 431 processes the analog signal from the data receiving unit 41 into a digital signal. The data processing unit 431 converts and compresses the image signal transmitted from the image receiving unit 411 into a digital signal, and receives an analog detection signal from the sensor receiving unit 413 and converts it into a digital signal. It includes a sensor processing unit (431b).

6 is a block diagram of an image processing unit 431a according to an embodiment of the present invention. Referring to FIG. 6, the image processing unit 431a is provided to convert and compress an analog image signal into a digital signal, and an image conversion module 431aa for converting an analog image signal transmitted from the image receiving unit 411 into a digital signal. ), an image adjustment module 431ab for adjusting a frame of an image signal or converting it into a digital image in order to reduce the capacity of an image, and a compression module 431ac for compressing the digital signal converted by the image conversion module 431aa. Can include.

The image conversion module 431aa converts an analog image signal into a digital image signal, but may be controlled not to be driven when the image receiving unit 411 is connected to a digital camera to receive a digital image signal.

The image adjustment module 431ab may adjust a frame of a digital image signal transmitted from the image receiving unit 411 or a digital image signal converted by the image conversion module 431aa or convert it into a digital image. The image adjustment module 431ab according to an embodiment of the present invention may convert an image signal according to a frame time interval adjusted by a frame adjustment unit 473 to be described later.

In another embodiment of the present invention, the image adjustment module 431ab may convert the image signal transmitted from the data receiver into a digital image according to the frame time interval determined by the frame adjustment unit 473 to be described later.

Although described later, the image signal photographed by the image photographing apparatus 10 needs a predetermined angle of view and image quality to determine whether black ice is generated. Accordingly, when an image signal is wirelessly transmitted from the transmission device 40, a vast amount of data can be transmitted. In this case, it may take a long time to transmit a large amount of video signal data, and even if the video transmission is sufficiently possible, sufficient throughput is not secured when transmitting the video from the various transmission devices 40 to the server 50. May not. Accordingly, in order to reduce the capacity of the image signal, the image may be converted by changing the frame time interval. In one embodiment of the present invention, if an image of 60 frames (fps) is photographed by the photographing unit, the frame time interval is 1/60, and the image adjustment module 431ab is the frame time adjusted by the frame adjustment unit 473. You can transform the image to match the interval. In an embodiment of the present invention, the image adjustment module 431ab may convert the image into a single frame by setting the frame time interval to 1 in the frame adjustment unit 473, and the image adjustment module 431ab ), it is possible to reduce the capacity of the digital image signal by converting the image to fit this. Further, the image adjustment module 431ab converts a digital image signal into a digital image to reduce the capacity, but may convert it into a digital image through a method such as capturing an image according to a frame time interval.

The compression module 431ac may be composed of CODEC that compresses digital video signals in the form of H.264, MPEG4, MPEG2, MJPEG, etc., and other types of compression methods that can minimize the loss to the original image can also be applied. . In addition, when the image signal is converted into a digital image by the image conversion module 431aa, it may be configured as a CODEC that compresses the digital image into a form such as JPG, JPEG, GIF, or PNG. Other types of compression can be applied to minimize the loss inflicted on the digital image.

Referring back to FIG. 5, the sensor processing unit 421b receives an analog detection signal from the sensor receiving unit 412 under the control of the transmission control unit 47, converts it to a digital signal, and converts the converted digital detection signal into a wireless processing unit 422. ).

The wireless processing unit 433 receives the digital signal and the detection signal compressed under the control of the transmission control unit 47 from the data processing unit 431 and processes them as a wireless signal. The wireless processing unit 433 includes a wireless conversion module 433a and a signal detection module 433b.

The wireless conversion module 433a processes the compressed digital signal and the detection signal into a wireless signal. Here, the digital signal includes a digital image signal and a digital image, and when the image signal is transmitted, the digital image signal will be converted into a wireless signal in the wireless conversion module 433a, and an image such as a JPG file is transmitted. In the wireless conversion module 433a, the digital image is converted into a wireless signal. The wireless conversion module 433a can convert a digital signal and a detection signal into a wireless signal so that the LTE wireless signal can be transmitted by the LTE module 451 to be described later, and the optical communication wireless signal is transmitted by the optical communication module 453. It is also possible to convert digital signals and detection signals into wireless signals to be able to do so.

The signal detection module 433b detects the strength of the surrounding wireless signal and transmits it to the transmission control unit. The signal detection module 433b detects a neighboring LTE signal and an optical communication signal, measures its strength, provides information of a signal having a high strength to the transmission control unit 47, and selects a conversion method in the wireless conversion module 433a. You can do it. The digital signal and digital detection signal compressed through the signal detection module 433b are converted into an LTE wireless signal or an optical communication signal, and transmitted to the wireless transmission/reception unit 45. Accordingly, it is possible to configure a system capable of transmitting an image signal and a detection signal without interruption by selecting a form of a wireless signal according to a communication environment.

In addition, the wireless processing unit 433 may be controlled to be processed simultaneously with the data processing unit 431 by a control management unit 471 that controls peripheral devices and controls input/output of the peripheral devices. Accordingly, the image processing unit 431a, the sensor processing unit 431b, and the wireless processing unit 433 can be simultaneously processed by the transmission control unit 47 to be implemented as one unit.

The wireless transmission/reception unit 45 is provided to transmit a radio signal transmitted from the wireless processing unit 433 of the data processing unit 43 as shown in FIG. 5. The wireless transmission/reception unit 45 is controlled by the transmission control unit 47 and includes an LTE module 451 and an optical communication module 453.

As described above, when the wireless processing unit 433 converts the compressed digital signal and the detection signal into an LTE wireless signal, the LTE module 451 transmits the digital signal and the detection signal using an existing LTE public network. The wireless mobile communication method of the LTE (Long Term Evolution) standard is a wireless standard that is between the 3rd generation (3G) mobile communication and the 4th generation (4G) mobile communication, and can be transmitted by minimizing the loss of video signals and detection signals.

When the wireless processing unit 433 converts the compressed digital signal and detection signal into an optical communication wireless signal, the optical communication module 453 transmits a digital signal and a detection signal through an optical communication port and an optical transceiver connected through an optical cable.

The wireless transmitter/receiver 45 may include both the LTE module 451 and the optical communication module 453 and may be selectively used according to a signal from the transmission control unit 47. The conversion method is selected in the wireless conversion module 433a according to the strength of the signal detected by the signal detection module 433b, and accordingly, a wireless signal is transmitted through the LTE module 451 and the optical communication module 453.

The transmission control unit 47 controls a data receiving unit 41, a data processing unit 43 including a data processing unit 431 and a wireless processing unit 433, and a wireless transmission/reception unit 45, and controls peripheral devices and A separate control management unit 471 for controlling input/output of the device may be included. In the present invention, the transmission control unit 47 includes an operating system that controls the transmission device 40 as a whole, and the operating system may include various types, but it can be applied to various systems and economically installed. It is desirable to be configured with Linux.

The control management unit 471 controls to drive only functions necessary for transmitting the image signal and the detection signal processed as a wireless signal among the functions of the transmission control unit 47, thereby minimizing the load applied to the transmission control unit 47. The control management unit 471 includes a kernel, which means a core part of an operating system. Kernel can also be composed of the Linux kernel, and it refers to a program that controls peripheral devices included in the system and controls input/output of peripheral devices. The control management unit 471 controls the image processing unit 431a, the sensor processing unit 431b, and the wireless processing unit 433 to be processed by a single transmission control unit 47 using the Linux kernel, and the wireless transmission/reception unit 45 Among the functions of ), the load applied to the wireless transmission/reception unit 45 is minimized by controlling to drive only the functions necessary for the video signal and the detection signal.

Further, the control management unit 471 controls the salt spray device 21 to spray salt water onto the road. When the weather condition input through the sensor 20 corresponds to the set meteorological condition, the salt water is sprayed. It can prevent the formation of black ice. Preferably, after setting the weather conditions suitable for generating black ice through the road surface temperature or the air temperature, precipitation, humidity, and wind speed that can estimate the road surface temperature, if the weather conditions sensed by the sensor 20 meet this Try to spray salt water. In addition, when it is determined that black ice is generated on the road surface through image analysis or image analysis from the server 50 to be described later, the salt spray device 21 may be operated by receiving the corresponding result. In particular, for the accuracy of prediction and removal of black ice generation, the control management unit 471 may control to operate the salt water spraying device 21 only when all of the set weather conditions are satisfied. Even if not all are satisfied, the salt spray device 21 may be operated to further prevent the generation of black ice.

FIG. 7 is a diagram showing the image processing unit 431a adjusting the frame of the image signal according to the detected signal from the sensor receiving unit 413 and the bandwidth and throughput recognized by the wireless transmitting and receiving unit 45 to be. 5 and 7, the transmission control unit 47 may further include a frame adjustment unit 473. The frame adjusting unit 473 is provided to adjust a frame time interval of the digital image signal converted by the image processing unit. As described above, when a digital image signal is transmitted by wireless communication, smooth transmission may not be possible due to a large capacity of the image signal. Therefore, in order to reduce the capacity of the image signal, the frame adjustment unit 473 may adjust the frame time interval of the image signal. When the frame adjustment unit 473 adjusts the frame time interval from 1/60 to 1 or more for an image photographed at 60 frames (fps), the capacity of the image signal decreases, and the transmission of the image signal may be facilitated.

Further, the frame adjustment unit 473 may adjust the frame time interval according to a detection signal for weather information detected from a sensor. In a preferred embodiment of the present invention, the frame time interval may be reduced by the frame adjusting unit 473 so that the image signal can be better analyzed in weather conditions in which black ice is likely to be generated. Accordingly, when the detection signal for the weather information corresponding to the normal weather condition is transmitted from the sensor receiving unit to the transmission control unit, the frame adjusting unit 473 converts the image at a frame time interval of 5 min to 10 min, and the black ice generating condition When the detection signal corresponding to is transmitted from the sensor receiving unit to the transmission control unit, the frame adjusting unit 473 may convert the image at a time interval of 1 min. The image adjustment module 431ab may adjust the image signal or convert it into a digital image at the frame time intervals adjusted by the frame adjustment unit 473.

FIG. 8 is a block diagram showing a transmission device 40 and a server 50 according to another embodiment of the present invention, and FIG. 9 is a transmission device 40 and a server 50 according to another embodiment of the present invention. 50) is a block diagram. The following will be described with reference to FIGS. 8 and 9. The transmission control unit 47 may further include a transmission control unit 475. The transmission control unit 475 may be provided to adjust the radio signal transmission period of the wireless transmission and reception unit 45. As can be seen in FIG. 4, various transmission devices 40 may be connected to the server 50 to determine whether black ice is generated on various roads. When a video signal of a road having a large capacity is transmitted to the server 50 in real time from a plurality of transmission devices 40, an overload occurs in a limited network environment, so that throughput is lowered or smooth transmission and analysis of whether black ice is generated is difficult.

In order to solve this problem, the transmission control unit 475 of the transmission control unit 47 may adjust the transmission period of the digital signal and the detection signal transmitted from the wireless transmission/reception unit 45 to the server 50. By allowing compressed digital signals and detection signals to be transmitted not in real time, but at regular intervals, overloading of the network environment can be prevented and smooth transmission of digital signals and detection signals can be promoted. Preferably, the frame adjusting unit 473 transmits a digital image signal or digital image of a low frame whose capacity is lowered at a predetermined period. More preferably, the reception control module 533 of the reception control unit 53, which will be described later, controls the data reception period for each transmission device 40 so that data transmission from each transmission device 40 to the server 50 does not overlap. Network environment overload or throughput can be prevented from deteriorating.

Referring to FIG. 9, the transmission control unit 47 may further include a selection unit 476. The selection unit 476 selects the converted digital signal, and causes the wireless transmission/reception unit 45 to transmit only the selected digital signal and the detection signal to the server 50. The selection unit 476 may select a digital signal by capturing an image signal from a digital image signal or a digital image, or selecting a specific image from among digital images. The regular selection unit 476 selects a digital signal based on weather information and road conditions corresponding to the black ice generation condition. The digital signal selected by the selection unit 476 is transmitted to the server 50 together with a detection signal by a sensor corresponding to the time at which the digital signal was photographed, so that it can be used for determining black ice generation and notifying whether black ice is generated. have. Although it will be described later, the black ice generation condition transmitted to the selection unit 476 is transmitted from the server 50, and the black ice generation condition is stored in the database or from the predictive model derived by machine learning to the feature selection module 537. As a result, an element corresponding to the black ice generation condition may be extracted.

Referring back to FIG. 8, the transmission control unit 47 may further include a reconnection unit 477 and a retransmission unit 479. The reconnection unit 477 checks the wireless communication connection state between the transmission device 40 and the server 50 at regular intervals, and automatically performs wireless communication reconnection when the wireless communication connection is disconnected.

The retransmission unit 479 is provided to transmit the compressed digital signal and detection signal back to the server when the transmission of the compressed digital signal and the detection signal does not reach the server 50 or is incomplete, preferably the server ( When there is a retransmission request from 50) or when reconnected to the server 50 through the reconnection unit 477, the automatically compressed digital signal and the detection signal may be automatically retransmitted to the server 50.

10 is a block diagram of a server 50 according to an embodiment of the present invention. 2 to 3 and 8 to 10, the server 50 may determine whether black ice is generated through data transmitted from the transmission device 40 and notify the user or nearby drivers. The server 50 may be connected to at least one or more transmission devices 40 through wireless communication. The server 50 may include a wireless communication unit 51, a data management unit 52, a reception control unit 53, a machine learning unit 54, and a storage unit 55.

The wireless communication unit 51 may wirelessly communicate with the wireless transmission/reception unit 45 of the transmission device 40 to receive a digital signal and a detection signal. The wireless communication unit 51 may be configured to receive an LTE wireless signal and/or an optical communication wireless signal transmitted from the transmission device 40.

The data management unit 52 converts the received radio signal into a storable signal. In particular, the data management unit 52 may release the compressed digital signal and return it to an outputable original image, and may convert the compressed digital signal into an image signal and a detection signal for simple storage. In addition, when the digital signal transmitted from the wireless communication unit 51 corresponds to a digital image, it may be converted into an image signal and stored. The data management unit 52 includes an image management unit 521 and a sensor management unit 523.

The image management unit 521 is provided to decompress the compressed digital signal and return it to an outputable original image, and may convert the compressed digital signal into an image scene for simple storage. When the received digital signal corresponds to a digital image, it may be converted into an image signal and stored.

The sensor management unit 523 converts the received detection signal in the form of a wireless signal into a detection signal that can be stored and analyzed. The detection signal can also be converted into a format for simple storage.

The reception control unit 53 has a function of controlling the server 50 by controlling peripheral devices and input/output of the peripheral devices. In the present invention, the reception control unit 53 includes an operating system that controls the server 50 as a whole, and the operating system may include various types, but it can be applied to various systems and economical installation is possible. It is desirable to be configured with (Linux). The reception control unit 53 may include a network monitoring module 531, and may selectively include at least one of a reception control module 533, a result transmission module 535, and a feature selection module 537.

The network monitoring module 531 is provided to confirm data transmission from the transmission device 40 connected to the server 50. The network monitoring module 531 can check whether the connection between the transmission device 40 and the server 50 is disconnected by checking data transmission between the transmission device 40 and the server 50, and accordingly Like the reconnection unit 477, the server 50 may attempt to reconnect to the transmission device 40 and request retransmission of the digital signal and the compressed signal after reconnection. In addition, the network monitoring module 531 may check whether the connection from the transmission device 40 to the server 50 is in an overload state by checking the bandwidth and throughput of the network.

Referring to FIG. 8, the reception control module 533 transmits a command for controlling a data reception period from the transmission device 40 connected to the server 50. As described above, when the video signal of the road with a large capacity is transmitted to the server 50 in real time from the plurality of transmission devices 40, an overload occurs due to the limited network environment, and the throughput is lowered or whether smooth transmission and black ice are generated. The analysis becomes difficult.

The reception adjustment module 533 may adjust the transmission period of the digital signal and the detection signal transmitted from the wireless transmission/reception unit 45 to the server 50 by transmitting a command for controlling the data reception period. Compressed digital signals and detection signals are not transmitted in real time but are transmitted at regular intervals to prevent overloading of the network environment, and smooth digital and detection signals can be transmitted. Preferably, the frame adjustment unit 473 transmits a digital image signal or digital image of a low frame whose capacity is reduced at a predetermined period, and by controlling the data reception period for each transmission device 40, each transmission device 40 By preventing data transmission to the server 50 from overlapping, it is possible to prevent an overload of a network environment or a decrease in throughput.

The result transmission module 535 is provided to transmit a determination as to whether black ice is generated. When determining whether black ice is generated based on the digital signal and the detection signal transmitted from the machine learning unit 54 to be described later, the result transmission module 535 is a notification means such as an electronic sign installed around the user and/or the road. You can notify whether black ice is generated through The result transmission module

Referring to FIG. 9, the feature selection module 537 is provided to extract a black ice generation condition from a prediction model for black ice generation. The machine learning unit 54 to be described later generates a prediction model for whether black ice is generated through machine learning, and the feature selection module 537 extracts black ice generation conditions from the prediction model. Since the present invention determines whether black ice is generated from a digital image signal or weather information from a digital image and a detection signal, the extracted generation conditions include a color change or color change of a part of a road extracted from an image signal or image A portion that can be extracted from an image signal and an image such as the location of and weather information such as temperature and humidity may be included. When the feature selection module 537 extracts a feature corresponding to the black ice generation condition, the feature is transmitted to the transmission device 40, and the digital image meeting the condition is transmitted to the selection unit 476 of the transmission device 40. You can have it only transmit signals or digital images.

Referring back to FIG. 10, the machine learning unit 54 generates a prediction model for whether or not black ice is generated from the digital signal transmitted through machine learning through machine learning, but preferably through image analysis or image analysis. Generate a prediction model for black ice generation. The machine learning unit 54 derives a prediction model for a security event periodically or in real time by using a machine learning algorithm from data provided from the wireless communication unit 51 and the data management unit 52. The machine learning unit 54 includes a variable extraction module 541, an algorithm selection module 543, and a learning module 545.

The variable extraction module 541 may receive a parameter and extract a threat factor determination field from the received preprocessed log. The parameter may be input through a user, and the system may determine and input a suitable parameter by itself.

The input parameters may include a part extractable from an image signal and an image such as a color change of a part of the road and a location of a part where the color change occurs, such as a black ice generation condition, and a part of weather information such as temperature and humidity.

The algorithm selection module 543 selects at least one of a plurality of algorithms to be used when performing machine learning. In the present invention, since supervised learning is performed through an image or an image, an algorithm used for supervised learning, that is, an algorithm such as a nearest neighbor, a linear model, or a random forest, can be selected. Preferably, an algorithm for supervised image learning is Is selected. Algorithms or combinations of algorithms other than the above-described algorithms may be used.

The learning module 545 performs machine learning using a selected algorithm or a combination of algorithms and derives a prediction model. It is determined whether black ice is generated for the digital signal and the detection signal of the road transmitted through the derived prediction model, and preferably the probability of black ice generation is derived as a predicted value.

The storage unit 55 may be composed of various storage devices capable of storing an image signal and a detection signal, and a portable storage device or a smart phone capable of receiving an LTE wireless signal may be used.

According to the combination of the above-described components, a road where black ice can be generated even in a low visibility environment is photographed, and the photographed image signal and the sensing signal measured by the sensor are converted into digital signals, which are located at a long distance through wireless communication. A black ice analysis system (1) using wireless communication that can be reliably transmitted to the server, and the server determines whether black ice is generated on the road based on the transmitted digital signal, and effectively informs safety managers and drivers is implemented. .

The detailed description above is to illustrate the present invention. In addition, the above description shows and describes preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications and environments. That is, changes or modifications may be made within the scope of the concept of the invention disclosed in the present specification, the scope equivalent to the disclosed contents, and/or the skill or knowledge of the art. The above-described embodiments describe the best state for implementing the technical idea of the present invention, and various changes required in the specific application fields and uses of the present invention are possible. Therefore, the detailed description of the invention is not intended to limit the invention to the disclosed embodiment. In addition, the appended claims should be construed as including other embodiments.

1: Black ice analysis system using wireless communication
10: image recording device 20: sensor
21: salt water spray device
30: power supply 40: transmitting device
41: data receiving unit
411: image receiving unit 413: sensor receiving unit
43: data processing unit 431: data processing unit
431a: image processing unit 431b: sensor processing unit
433: wireless processing unit 433a: wireless conversion module
433b: signal detection module 45: wireless transmission/reception unit
451: LTE module 453: optical communication module
47: transmission control unit 471: control management unit
473: frame control unit 475: transmission control unit
476: sorting unit 477: reconnection unit
479: retransmission unit
50: server 41: wireless communication department
52: data management unit 53: reception control unit
531: network monitoring module 533: reception control module
535: result transmission module 537: feature selection module
54: machine learning unit 541: variable extraction module
543: algorithm selection module 545: learning module
55: storage

Claims (13)

At least one image photographing apparatus having a photographing unit for photographing a road where black ice can be generated and a filter unit for supplementing an image photographed from the photographing unit, a sensor for measuring weather information of a road where black ice can be generated, A transmission device that manages and transmits an image signal acquired from a road, and a server that determines whether black ice is generated through information transmitted from the transmission device,
The transmission device includes a data receiving unit having an image receiving unit receiving an image signal photographed by the image capturing device, a data processing unit receiving and processing an image signal from the data receiving unit and processing it into a wireless signal, and a radio transmitted from the data processing unit. A radio transmitting and receiving unit for transmitting a signal and a transmission control unit for controlling the data receiving unit, a data processing unit, and a wireless transmitting and receiving unit,
The data processing unit includes a data processing unit having an image processing unit that converts and compresses the analog image signal received from the data receiving unit into a digital signal, and a wireless processing unit that receives the compressed digital signal from the data processing unit and processes it as a wireless signal. But,
The transmission control unit further comprises a frame adjustment unit for adjusting a frame time interval of the digital image signal converted by the image processing unit,
The image processing unit according to an image conversion module for converting the image signal transmitted from the data receiving unit into a digital image signal, a compression module for compressing the digital image signal converted by the image conversion module, and a frame time interval determined by the frame adjustment unit. Black ice analysis system using wireless communication, characterized in that it comprises an image adjustment module for adjusting the image signal. delete The method of claim 1, wherein the data receiving unit further comprises a sensor receiving unit for additionally receiving a detection signal for weather information around the road detected by the sensor, and the data processing unit receives and transmits a detection signal from the data receiving unit. Further comprising a sensor processing unit for converting and compressing the received detection signal into a digital signal,
The wireless processing unit receives the compressed detection signal from the data processing unit and processes it as a wireless signal. delete The method of claim 3, wherein the sensor receiver transmits the weather information detected by the sensor to the transmission control unit, and the frame adjustment unit adjusts the frame time interval when the black ice generation condition is met according to the transmitted weather information. Black ice analysis system using wireless communication. The radio of claim 1, wherein the wireless transmitter/receiver transmits a bandwidth and/or throughput of a radio signal transmission to the transmission control unit, and the frame controller adjusts a frame time interval according to the transmitted bandwidth and/or throughput. Black ice analysis system using communication. The black ice analysis system according to claim 1, wherein the image adjusting module converts the image signal transmitted from the data receiving unit into a digital image according to a frame time interval determined by the frame adjusting unit. The method of claim 1, wherein the wireless transmission/reception unit comprises at least one of an LTE module having a wireless communication method of an LTE standard and an optical communication module of an Ethernet standard through an optical cable,
The wireless processing unit includes a wireless conversion module that processes the compressed digital image signal and detection signal into a wireless signal, and a signal detection module that detects the strength of the surrounding wireless signal and transmits it to the transmission control unit,
The wireless conversion module converts the compressed digital signal and the detection signal into an LTE wireless signal or an optical communication wireless signal, and determines a conversion method of the wireless conversion module according to the strength information of the signal detection module. Black ice analysis system used. The method according to any one of claims 1, 3, 5 to 8, wherein the server is a wireless communication unit that receives digital signals through wireless communication with a wireless transmission and reception unit, and is capable of storing digital signals transmitted from the wireless communication unit. A data management unit for converting a signal in the form of a signal, a storage unit for storing the digital signal converted by the data management unit, and a reception control unit for controlling the server,
Black ice analysis using wireless communication, characterized in that the reception control unit includes a network monitoring module that checks data transmission from a transmission device connected to the server, and a result transmission module that transmits a determination on whether black ice is generated. system. The method of claim 9, wherein the server further comprises a machine learning unit that generates a prediction model for whether the digital signal transmitted through machine learning is black ice generated,
The machine learning unit generates a prediction model for whether black ice is generated through image analysis or image analysis, and at least one of a variable extraction module for extracting elements related to black ice generation from the transmitted digital signal, and a plurality of algorithms for machine learning. Including an algorithm selection module for selecting one algorithm and a learning module for performing machine learning using the selected algorithm or a combination of algorithms,
Black ice analysis system using wireless communication, characterized in that determining whether or not black ice is generated through a prediction model derived from the learning module. The method of claim 10, wherein the reception control unit further comprises a reception control module to transmit a command for controlling a data reception period from a transmission device connected to the server, and the transmission control unit of the transmission device transmits a radio signal of the wireless transmission and reception unit. Black ice analysis system using wireless communication, characterized in that it further comprises a transmission control unit for adjusting the period. The method of claim 11, wherein the reception control unit further comprises a feature selection module for extracting a black ice generation condition from a prediction model for black ice generation derived from the machine learning unit, wherein the feature selection module is connected to a transmission device connected to the server. Transmit the extracted black ice generation conditions,
The transmission control unit of the transmission device further comprises a selection unit that selects the converted digital signal based on the transmitted black ice generation condition, wherein the selection unit allows the wireless transmission/reception unit to transmit only the selected digital signal to the server. Black ice analysis system using wireless communication. The method of claim 9, wherein the black ice analysis system using wireless communication further comprises a salt water spray device for preventing black ice from being generated on the road,
The salt water spraying device sprays salt water when the weather condition detected by the sensor meets the set weather condition or when black ice transmitted from the result transmission module is generated on the road. Black ice analysis system used.

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