KR102099120B1 - Video transmission method using wireless network and mobile terminal - Google Patents

Abstract

The present invention relates to a railway image transmission method performed for detection of obstacles on a railroad track and prevention of collision of a reverse train. According to the present invention, the railway image transmission method is provided with a mobile terminal (10) and an IP camera (40) connected to a wireless network (19), an intermediary server (30) connected to the wireless network (19) through the Internet, a wireless antenna 20 installed in a railway facility and constantly transmitting unique transmission information, and the like, so that image information photographed by the IP camera (40) is transmitted in real time to the mobile terminal (10) through the wireless network (19) and Internet. Through the present invention, a crew member such as an engineer of a train during operation can visually check the situation of a track on a forward and backward path through the mobile terminal (10) such as a smartphone or tablet computer, and prevent accident, thereby ensuring operation safety.

Description

Railway video transmission method using wireless network and mobile terminal {VIDEO TRANSMISSION METHOD USING WIRELESS NETWORK AND MOBILE TERMINAL}

The present invention relates to a railway image transmission method performed to detect obstacles on a railroad track and prevent collision of a reverse train, the mobile terminal 10 and IP camera 40 connected to the wireless network 19, and the Internet. It consists of a mediation server (30) connected to the wireless network (19) and a wireless antenna (20) that is installed in a railroad facility and transmits unique transmission information at all times, and images captured by the IP camera (40) Information is transmitted in real time to the mobile terminal 10 through the wireless network 19 and the Internet.

Railroads have the advantage of superior transportation capacity and efficiency compared to other land transportation methods, but they require a high degree of safety management in operation because of enormous damage in the event of an accident.

In particular, as compared to road transportation, it is difficult to agile braking, and due to the nature of the train, which is inevitably limited in securing the front and rear view of the engineer, there is a risk of collision with other vehicles, falling objects, or barriers on railroad tracks. This exists.

Accordingly, a CCTV facility that photographs a specific area of a railroad facility such as a railroad track or a vehicle barrier can be built and monitored by a commander or a station office, or further processed by a computer to record the presence or absence of a railroad blockage. Technology has been developed, and related prior arts include Patent No. 1542134.

Conventional railway image processing techniques, including Patent No. 1542134, seek to reduce or exclude surveillance personnel by automatically determining the presence or absence of obstacles on tracks, and crews, such as engineers of individual trains, track on the front and rear paths of the train. There is a fundamental limitation that the status of can't be checked directly by video.

That is, the conventional railway image processing technique provides an image to a subject that controls a number of trains in operation, such as a command room or a station room, and a crew member such as an engineer of an individual train is forced to obtain information via the command room indirectly.

Particularly, in the prior art, the situation identified in the command room is transmitted to individual trains through one-to-one voice wireless communication. If a wireless communication failure occurs or a communication error between the command room or the crew occurs, a serious accident may occur. .

The present invention was devised in consideration of the above-described problems, and in a railway image transmission method, a mobile terminal 10 connected to the Internet through a wireless network 19 and equipped with a detection program, and a wireless antenna for transmitting transmission information (20), an intermediary server (30) connected to the Internet through the wireless network (19) and an IP camera (40) for photographing railroad tracks, an IP database (31) connected to the Internet and containing transmission information and access information. ) Is configured, the mobile terminal 10 receives the transmission information transmitted from the wireless antenna 20, and the detection program transmits the transmission information to the intermediary server 30 through the wireless network 19 and the Internet and , The intermediary server 30 receiving the transmission information retrieves the access information corresponding to the transmission information by querying the IP database 31, and the connection information retrieved by the intermediary server 30 to the mobile terminal 10 Steps to transmit , The mobile terminal 10 receives the connection information, the detection program using the connection information to open a communication path with the IP camera 40, and the mobile terminal 10 and the IP camera 40, respectively, with the client It is a railway image transmission method using a wireless network and a mobile terminal, characterized in that the image information of the IP camera (40) acts as a server and is delivered to the mobile terminal (10), and the detection program outputs image information.

In addition, in the railway image transmission method, the mobile terminal 10 connected to the Internet through the wireless network 19 and equipped with a detection program, a wireless antenna 20 for transmitting transmission information, and a wireless network 19 are provided. An IP camera 40 connected to the Internet and photographing a railroad track, a radar 50 connected to the IP camera 40 to input detection information to the IP camera 40, and connected to the Internet to transmit information and access The intermediary server 30 to which the IP database 31 containing information is connected is configured, and the mobile terminal 10 receives the transmission information transmitted from the wireless antenna 20, and the detection program transmits the transmission information to the wireless network 19. And transmitting to the intermediary server 30 through the Internet, and the intermediary server 30 receiving the transmission information to query the IP database 31 to retrieve access information corresponding to the transmission information, and the intermediary server ( 30) withdrawal Transmitting to the mobile terminal 10, the mobile terminal 10 receives the connection information, the detection program using the connection information to establish a communication path with the IP camera 40, and the radar 50 The step of inputting the detection information to the IP camera 40, the IP camera 40 is a step of generating composite information by combining the image information and the detection information, and the mobile terminal 10 and the IP camera 40, respectively Characterized in that it consists of a step of outputting image information or detection information in the composite information by receiving the composite information by the detection program receiving the composite information by acting as a client and server, and the complex information of the IP camera 40 is transmitted to the mobile terminal 10. It is a method of delivering railway images using wireless networks and mobile terminals.

Through the present invention, a crew member such as an engineer of a train during operation can visually check the situation of a track on a forward and backward path through a mobile terminal 10 such as a smartphone or tablet computer, and prevent accidents. Operation safety can be ensured.

In particular, it is possible to perform not only through the mobile terminal 10 carried by the crew without installing a separate image receiving device for an individual train, but also for high-level manipulation of the mobile terminal 10 or to identify the IP camera 40. It is possible to automatically connect the mobile terminal 10 and the IP camera 40 through the wireless antenna 20 without securing and inputting complicated information, and it is possible to seamlessly connect using the existing communication network without establishing a separate dedicated communication network. , It can minimize the cost of equipment provision and network construction.

1 is a system configuration diagram of the present invention
Figure 2 is an exemplary IP camera installation state of the present invention
3 is an exemplary view of a wireless antenna installation state of the present invention
4 is a sequence diagram of the present invention
5 is an exemplary view of the IP camera installation state of the present invention is connected to the radar
6 is a sequence diagram of a radar application embodiment of the present invention

The detailed configuration and process of the present invention will be described with reference to the accompanying drawings.

First, FIG. 1 shows the components of the system for performing the present invention and the connection state between each component. As shown, the present invention is connected to the Internet through the wireless network 19 and equipped with a detection program. The mobile terminal 10, a wireless antenna 20 that constantly transmits unique transmission information, and an IP camera 40 that is connected to the Internet through a wireless network 19 and photographs a railroad track, and is connected to the Internet It is performed by an intermediary server 30 to which the IP database 31 containing transmission information and connection information is connected.

In the present invention, the wireless network 19 refers to a mobile communication network, a wireless LAN, and the like, as a typical smart phone can selectively access a mobile communication network and a wireless LAN with a single device, the mobile terminal 10 of the present invention Alternatively, the IP camera 40 may also be configured to enable selective access to a mobile communication network and a wireless LAN.

In the mobile terminal 10 or IP camera 40 of the present invention, the selection of the network type in connection to the wireless network 19 may be selected in consideration of the coverage or communication system of the wireless network 19. You can.

In addition, in the present invention, the mobile terminal 10 means a mobile or portable information device capable of connecting to the aforementioned wireless network 19, and the wireless network 19 connected portable computer system mounted in the cockpit of the train. Of course, a tablet computer carried by a flight attendant or the like can be applied, and these mobile terminals 10 are programs that process transmission information, access information, and video information, which will be described later, and are application programs of the operating system of the mobile terminal 10. A detection program having a is mounted.

That is, in the present invention, the detection program mounted on the mobile terminal 10 performs functions such as detection of a wireless antenna 20 transmission signal, communication with the mediation server 30 and IP camera 40, and output of video information. It is an application program.

The IP camera 40 applied to the present invention is a camera 41 that can be directly connected to the Internet by being given an individual IP address, and in particular, the IP camera 40 of the present invention is shown in FIG. 2. As described above, the camera 41, which is a digital imaging device, and the wireless network 19 connection network adapter are built-in communication module 42 and can be directly connected to the wireless network 19.

Figure 2 illustrates the IP camera 40 for photographing the installation point of the barrier at the end of the railway track, in the embodiment shown in the figure IP camera 40 is a camera 41 and the communication module 42 Although separate, the imaging function and the communication function may be installed as a single device.

In the present invention, the wireless antenna 20 installed on or around the railway line to be photographed by the IP camera 40 is a device that periodically transmits wireless signals, and can be operated independently without a separate communication network connection, and power Consumption also has a slight advantage, as shown in FIG. 3, it can be easily installed by simply attaching it to railway-related facilities such as signs, and maintenance and replacement can be easily performed.

In addition, in the present invention, the wireless antenna 20 does not mean a general antenna mounted on a separate wireless signal transmission device, and as illustrated in FIG. 3, externally has the form of an antenna, but has a built-in configuration. As a wireless module equipped with an oscillation circuit for transmitting a wireless signal, a processor for driving the same, and a memory device containing a periodic transmission signal may be applied, and as described above, power consumption may be minimal and its own power source may also be embedded. .

The transmission information periodically transmitted from the wireless antenna 20 is simply string information, and the same transmission information is repeatedly transmitted in a broadcast method in which a destination is not specified, and the transmission information is transmitted to each wireless antenna 20 As the unique information given for each, a serial number and the like capable of self-identification of the wireless antenna 20 are applied.

The intermediary server 30 is a server to which the IP database 31 is connected and connected to the Internet, and a server operated by an operating entity of a railroad facility may be applied, and the transmission information of the aforementioned wireless antenna 20 may be applied to the IP database 31. And corresponding to the connection information of the IP camera 40 is recorded.

In the present invention, the wireless antenna 20 corresponds to the IP camera 40, and the transmission information transmitted from the wireless antenna 20, that is, the serial number and the connection information of the IP camera 40, that is, the IP address is a one-to-one correspondence format. It is recorded in the IP database (31).

As described above, the present invention is performed by a wireless network 19 and a mobile terminal 10 connected to the Internet, an intermediary server 30 and an IP camera 40, and a wireless antenna 20 that wirelessly transmits transmission information at all times. As in step 4, the mobile terminal 10 receives the transmission information transmitted from the wireless antenna 20, and the detection program transmits the transmission information to the intermediary server 30 through the wireless network 19 and the Internet. Is disclosed.

This is a situation in which a train enters a railroad track that is a photographing area of IP camera 40, and the mobile terminal 10 in the train receives the transmission information transmitted from the wireless antenna 20 and transmits it to the intermediary server 30. will be.

Subsequently, the intermediary server 30, which has received the transmission information, performs a step of retrieving the connection information corresponding to the transmission information by querying the IP database 31, as described above, with the transmission information of the wireless antenna 20. Since the connection information of the IP camera 40 is one-to-one, it is possible to specify the IP camera 40 of the corresponding line.

Subsequently, the intermediary server 30 transmits the extracted connection information to the mobile terminal 10 through the Internet and the wireless network 19, and the mobile terminal 10 receives the connection information, and the detection program access information. A step of establishing a communication channel with the IP camera 40 is performed by using the mobile terminal 10 in the train and the IP camera 40 installed on the corresponding line is automatically connected.

That is, the user's direct manipulation of the mobile terminal 10, such as entering the IP address of the IP camera 40, the mobile terminal 10 in the train and the IP camera 40 of the corresponding line are correctly connected, In this process, the intermediary server 30 only provides access information of the IP camera 40 to the mobile terminal 10 and may not be involved in actual information distribution between the mobile terminal 10 and the IP camera 40.

When a communication path between the mobile terminal 10 and the IP camera 40 is opened, the mobile terminal 10 and the IP camera 40 act as a client and a server, respectively, so that the video information of the IP camera 40 is a mobile terminal 10 ), And the sensing program outputs the image information, whereby a flight attendant such as an engineer who is a user of the mobile terminal 10 can directly check the image information transmitted in real time from the IP camera 40.

Real-time checking of the railway image information of the crew can be particularly useful when reversing a train where it is virtually impossible to secure a view, and thus, as shown in FIG. 2, a safe stop of the train without unnecessary collision is possible even on a line blocked by a barrier. It is possible.

In particular, as described above, since the corresponding IP camera 40 can be accurately connected without complicated manipulation of the mobile terminal 10, user convenience can be secured.

On the other hand, as shown in Figure 4, the transmission information transmitted from the wireless antenna 20 is always transmitted in a broadcast manner that does not specify the destination, the communication between the intermediary server 30 and the mobile terminal 10 is HTTP (HyperText Transfer Protocol) or security-enhanced HTTPS (Hypertext Transfer Protocol Secure), as described above, after the establishment of a communication path between the mobile terminal 10 and the IP camera 40, the intermediary server 30, the IP Although it is possible to collect and store video information transmitted from the camera 40, it does not relay this in the information distribution between the mobile terminal 10 and the IP camera 40, thereby reducing the communication load of the intermediary server 30 and related computational resources. You can.

In addition, this communication path between the mobile terminal 10 as a client and the IP camera 40 as a server is opened separately from the communication path used when connecting between the first mobile terminal 10 and the intermediary server 30. As shown, a websocket-based communication path can be applied, thereby enabling more efficient and intelligent communication.

WebSocket is a communication method capable of pushing data to a client by a server, unlike in normal HTTP. Polling method in which the server's response by a client's request in HTTP or HTTPS is sequentially performed. If only possible, WebSocket can provide data by the server even if there is no continuous and repetitive request from the client.

In the present invention, by utilizing the characteristics of these web sockets, it is possible to not only simplify the application program mounted on the mobile terminal 10, but also secure the operational efficiency of the communication path, as well as the above-described detection that is a client program mounted on the mobile terminal 10. After the program establishes a communication path between the mobile terminal 10 and the IP camera 40, the IP camera 40 may be controlled by transmitting predetermined control information to the IP camera 40.

That is, the magnification or angle of view of the IP camera 40 may be controlled according to the control of the detection program mounted on the mobile terminal 10 in the process of distributing image information through the communication path between the mobile terminal 10 and the IP camera 40. In this way, the mobile terminal 10 can acquire more useful image information.

Meanwhile, as shown in FIG. 5, a radar 50 connected to the IP camera 40 and inputting detection information to the IP camera 40 is configured, so that not only simple image information is transmitted, but also through the radar 50. It is possible to deliver complex information, which is a combination of detection information and image information, such as the presence or absence of the obtained track block, the distance between the block and the radar 50, or the distance between the train and the radar 50.

6, the mobile terminal 10 receives the transmission information transmitted from the wireless antenna 20, and the detection program transmits the transmission information to the wireless network 19 and the radar 50 of the present invention. Started by the step of transmitting to the intermediary server 30 via the Internet, and then the intermediary server 30 receiving the transmission information retrieves the connection information corresponding to the transmission information by interrogating the IP database 31, and the mediation The server 30 transmits the withdrawn connection information to the mobile terminal 10, and the mobile terminal 10 receives the connection information, and the detection program uses the connection information to establish a communication path with the IP camera 40. The step of opening is performed as described above.

In the present invention, the radar 50 is applied with a Doppler radar capable of detecting the distance between the reflector and the receiving module of the radar 50, as well as the presence or absence of a reflector in the detection area, that is, a line block or a train. 5, the radar 50 and the IP camera 40 are installed in the same facility, and the communication module 42 and the radar 50 of the IP camera 40 are connected to the radar. Step 50 is input the detection information to the IP camera 40 is performed.

Thereafter, the IP camera 40 generates a composite information by combining the image information and the detection information. In the present invention, the detection information is mainly composed of distance information that can be displayed as a simple numeric string. The information may have a form in which image information and detection information are simply merged, and thus the generation of the composite information may be performed through a microcontroller unit (MCU) and a memory device embedded in the communication module 42.

When the composite information is generated, the mobile terminal 10 and the IP camera 40 act as a client and a server, respectively, so that the composite information of the IP camera 40 is delivered to the mobile terminal 10, and the detection program receives the composite information. By performing the step of outputting the video information or detection information in the composite information, a crew member such as an operator of the mobile terminal 10 can directly check the video information or detection information transmitted in real time from the IP camera 40.

10: mobile terminal
19: wireless network
20: wireless antenna
30: mediation server
31: IP database
40: IP Camera
41: camera
42: Communication module
50: radar

Claims (2)

In the railway image transmission method, the mobile terminal 10 is connected to the Internet through the wireless network 19 and equipped with a detection program, the wireless antenna 20 for transmitting the transmission information, and the Internet through the wireless network 19 It is connected to the IP camera 40 for photographing the railroad tracks, and the mediation server 30 connected to the Internet and connected to the IP database 31 containing transmission information and connection information is configured.
The mobile terminal 10 receives the transmission information that is always transmitted in a broadcast manner from the wireless antenna 20, and the detection program transmits the transmission information to the intermediary server 30 through the wireless network 19 and the Internet. ;
A step in which the intermediary server 30, which has received the transmission information, queries the IP database 31 to retrieve connection information corresponding to the transmission information;
The intermediary server 30 transmits the extracted connection information to the mobile terminal 10;
A step in which the mobile terminal 10 receives the connection information, and the detection program opens a communication path with the IP camera 40 using the connection information;
The mobile terminal 10 and the IP camera 40 act as a client and a server, respectively, so that the video information of the IP camera 40 is delivered to the mobile terminal 10, and the detection program is composed of outputting video information. Railway video transmission method using wireless network and mobile terminal.
In the railway image transmission method, the mobile terminal 10 is connected to the Internet through the wireless network 19 and equipped with a detection program, the wireless antenna 20 for transmitting the transmission information, and the Internet through the wireless network 19 The IP camera 40 connected to the railway track and the radar 50 connected to the IP camera 40 to input detection information to the IP camera 40, and the Internet connected to the transmission information and access information The intermediary server 30 to which the stored IP database 31 is connected is configured,
The mobile terminal 10 receives the transmission information that is always transmitted in a broadcast manner from the wireless antenna 20, and the detection program transmits the transmission information to the intermediary server 30 through the wireless network 19 and the Internet. ;
A step in which the intermediary server 30, which has received the transmission information, queries the IP database 31 to retrieve connection information corresponding to the transmission information;
The intermediary server 30 transmits the extracted connection information to the mobile terminal 10;
A step in which the mobile terminal 10 receives the connection information, and the detection program opens a communication path with the IP camera 40 using the connection information;
A step in which the radar 50 inputs detection information to the IP camera 40;
IP camera 40 generating a composite information by combining the image information and the detection information;
The mobile terminal 10 and the IP camera 40 act as a client and a server, respectively, so that the complex information of the IP camera 40 is transmitted to the mobile terminal 10, and the detection program receives the complex information and the video information in the complex information. Or a method for transmitting railway images using a wireless network and a mobile terminal, characterized in that it consists of a step of outputting detection information.

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