KR100895710B1 - Apparatus, system and methdod for showing the traffic emergency using sensor network - Google Patents

Abstract

According to the present invention, a traffic emergency display is provided using a wireless sensor network that provides accident occurrence information to an adjacent area where an accident occurs when a traffic accident occurs by using a traffic emergency display device installed along a center line of a road and a portable terminal capable of controlling the traffic emergency situation. An apparatus, system, and method are disclosed.

The traffic emergency display system using the sensor network according to the present invention includes a wireless communication unit for transmitting and receiving data to and from a mobile terminal or other traffic emergency display device, a display unit for displaying traffic condition information to the outside, and lighting control provided from the communication unit. A plurality of traffic emergency display devices including a controller for processing a message to control the display of the display unit, a power supply unit for supplying power to the wireless communication unit, the control unit, and the display unit; And a portable terminal receiving information from an operator and transmitting the lighting control message to the traffic emergency display device, wherein the traffic emergency display device is installed along a center line and constitutes a sensor network.

Traffic Sign, Traffic Control, Traffic Accident Prevention, Sensor Network, USN

Description

Local display, system and method of traffic emergency using sensor network {APPARATUS, SYSTEM AND METHDOD FOR SHOWING THE TRAFFIC EMERGENCY USING SENSOR NETWORK}

According to the present invention, when a police officer carries a terminal capable of wireless communication and arrives at an area where a traffic accident occurs, the traffic emergency display device installed on the central line of the road is controlled, and each display device is a sensor. The present invention relates to an apparatus, a system, and a method for displaying an emergency situation by transmitting an emergency message using a network.

In general, when a traffic accident occurs on a large road such as a highway, conventionally, measures such as installing a luminous trivet or the like at a certain distance from the accident place when a traffic accident occurs. However, there is a risk that secondary and tertiary accidents are caused by a subsequent vehicle that runs at high speed without recognizing the fact of an accident during the process of rectifying the accident site.

There is a conventional traffic information system installed on the road, but this is expensive and the information is transmitted through the display unit around the site again through the central situation room after the step of collecting traffic information on the road. There is a problem that the time difference occurs in the transmission, and the accident site and the information transmission site has a significant difference in distance.

Therefore, in the event of an accident, a system capable of providing information about the accident to drivers operating near the accident site quickly and providing traffic information that can lead to the accident scene at a safe speed is provided. need.

In order to solve the above problems, the traffic police arriving at the accident occurrence point has been proposed to safely deliver the accident information on the road while preventing the occurrence of the second and third accidents.

To this end, the police possess a portable terminal capable of controlling a traffic emergency display device with a built-in wireless sensor network, and a traffic emergency including a communication unit communicating with the mobile terminal and a sensor network and a display unit displaying traffic emergency information. By installing a plurality of status display devices on the center line of the road, it is possible to change the display status of the display device by a certain distance through the mobile terminal near the point where the accident occurred, thereby conveying information about the accident to the rear driver. To prevent it.

The traffic emergency display system using the sensor network according to the present invention includes a wireless communication unit for transmitting and receiving data to and from a mobile terminal or other traffic emergency display device, a display unit for displaying traffic condition information to the outside, and lighting control provided from the communication unit. A plurality of traffic emergency display devices including a controller for processing a message to control the display of the display unit, a power supply unit for supplying power to the wireless communication unit, the control unit, and the display unit; And a portable terminal receiving information from an operator and transmitting the lighting control message to the traffic emergency display device, wherein the traffic emergency display device is installed along a center line and constitutes a sensor network.

In this case, the display unit may be changed into two or more colors to emit light, it is preferable that both sides of the table market value.

The power supply unit may include a solar cell that collects solar energy, and a power storage means for storing the solar cell, and the solar cell is preferably located at an upper end of the display device. In addition, the display device is preferably waterproof.

According to another aspect of the present invention, a sensor including a plurality of traffic emergencies display device and a portable terminal for receiving data from an operator and configured to transmit data to the display device by wireless communication, installed along a center line and constituting a sensor network. Provide a traffic emergency indication control system using a network.

According to another aspect of the invention, (a) the mobile terminal receives the control information of the traffic emergency display device; (b) the mobile terminal wirelessly communicates the control information to the adjacent traffic emergency display device; (C) interpreting the control information by the display device receiving the control information, generating an emergency message and transmitting the sensor message to the sensor network communication; and (d) an adjacent display device receiving the emergency message. Interpreting the received message, lighting the display unit, and (e) rewriting the emergency message received by the display device to send an emergency message rewritten to an adjacent display device through sensor network communication. Provided is a traffic emergency display control method using a sensor network.

In this case, the control information preferably includes at least one of the emergency transmission distance, the delivery direction, the lighting color for each section in the delivery distance, the emergency message is the source node number, destination node number, maximum number of hops forward, current It is preferable to include at least one of the hop number information, the lighting hop number information for each color, and the lighting direction.

In addition, the step (d) includes determining the validity of the received message using the destination node number, the current hop number information and the maximum forwarding hop number information of the received message, or the current hop number information of the received message. And determining the display color of the display unit by using lighting hop number information for each color.

The step (e) preferably includes the step of determining the validity of the transmission using the current hop number information and the maximum forwarding hop number information of the rewritten message.

According to the traffic emergency indication control method and system using the sensor network according to the present invention, there are advantages as follows.

First, when the traffic police transmits control information through wireless communication through the mobile terminal, the traffic information may be immediately transmitted to the driver located in the surrounding roads by emitting a display of the traffic emergency display device. Decrease.

Secondly, it is not just information about whether there is a traffic accident to the driver on the road, but a red sign for the warning message to be very careful for drivers close to the accident point, an orange sign if the distance requires considerable attention, and a yellow sign if the distance is somewhat separated from the accident place. By providing blue markings to drivers who are on the streets corresponding to the marking and normal road conditions, information can be provided by discriminating the distance from the accident area by distance. In addition, the front and the rear of the display device may be displayed differently, so that when there is no aftermath of the accident on the opposite side of the road where the accident occurs, the traffic may not be displayed to enable smooth passage.

Third, since solar energy is converted into electrical energy using a solar cell, the system can be operated semi-permanently without the need of replacing a power supply such as a battery.

Hereinafter, with reference to the accompanying drawings a preferred embodiment according to the present invention will be described in detail.

1 is a block diagram showing the configuration of a traffic emergency display device according to the present invention, Figure 2 is a schematic diagram of the traffic emergency display device shown in FIG.

As shown, the traffic emergency display device according to the present invention is composed of a sensor network wireless communication unit 110, the display unit 120 and the control unit 130, the power supply unit 140. Hereinafter, the traffic emergency display device is referred to as a display device, and the sensor network wireless communication unit 110 is referred to as a wireless communication unit.

The wireless communication unit 110 is composed of an antenna 111 and the RF module 112, and receives the control information sent by the mobile terminal possessed by the traffic police to transmit to the control unit 130. In addition, the control information received from the controller 130 is transferred to another adjacent display device.

The controller 130 calculates the control information and transmits a control signal to the wireless communication unit 110 and the display unit 120.

The display unit 120 is installed on the outer surface of the display device installed at the center line of the road, and lights up so that the driver can be identified according to the control signal of the controller 130 when a traffic emergency such as an accident occurs. In particular, it can be turned on or flashing in various colors such as red, orange, yellow, and blue. The display unit may be composed of RED LED, ORANGE LED, YELLOW LED, BLUE LED, but it will be apparent to those skilled in the art that the present invention can be replaced by other lighting or flashing means equivalent to this.

In addition, since the display unit 120 may exist on the front and the rear of the display device, the lighting of the lane opposite to the lane in which the accident occurs may be displayed differently according to traffic conditions.

The control unit 130 receives the control information sent by the mobile terminal or the emergency message sent by the other display device from the wireless communication unit, analyzes it, calculates whether it is on or off, and changes it to a control signal to display the display unit 120. To pass on. In this case, the control point may be transmitted to the display unit 120 by distinguishing the display area to be red if it is within a certain adjacent distance as an accident occurrence point, orange if it is a distance requiring considerable attention, yellow if it is a somewhat separated point, and blue if it is a safe area. In addition, a control signal may be sent to the display unit 121 on the front side and the display unit 122 on the rear side to display different colors.

In addition, the controller 130 transmits control information to the wireless communication unit 110 to transmit an emergency message to an adjacent display device. The emergency message is one of the source node number, the destination node number, the maximum number of forward hops, the current number of hops from the point of occurrence of the accident to the display, the lighting color for each hop number, and whether the target is the front display or the rear display. It may include more.

The emergency message is re-transmitted in a multi-hop manner between the plurality of display devices arranged on the road center line, and transferred from the display device at the location where the emergency situation occurred to the display device remotely separated from the display device.

The power supply unit 140 performs a function of supplying power to the wireless communication unit 110, the display unit 120, and the control unit 130. The power supply unit 140 includes a solar cell 141 and a power storage means 142. The solar cell 141 acquires solar energy and converts the solar energy into electrical energy. The solar cell 141 is preferably configured to increase the efficiency of acquiring solar energy is located at the top of the fixing means installed on the center line of the road. The electrical storage means 142 stores the electrical energy converted by the solar cell 141.

Such a display device is generally installed along a center line of a road, or may be installed inside a fixture installed along a center line. In particular, each display device preferably has a waterproof function to prevent water from penetrating.

Hereinafter, a configuration of a traffic emergency display system according to the present invention will be described with reference to FIGS. 3 to 5.

3 is a view showing an embodiment in which the emergency situation display system according to the present invention performs an emergency situation, Figures 4 and 5 is a configuration diagram showing an emergency message transmitted and received between the display device.

As illustrated in FIG. 3, the traffic emergency display system includes a plurality of traffic emergency display devices and a portable terminal.

The portable terminal 320 is carried by an authorized person, such as a traffic police, and the display device 310 is disposed along the road center line.

The portable terminal 320 is equipped with a traffic emergency display device and a wireless communication means capable of sensor network communication. The mobile terminal 320 receives emergency emergency transmission distance and delivery direction information from a user such as a police station, and displays the adjacent communication device 310b through wireless communication. To send). Since the portable terminal is a device capable of inputting information and sensor network communication, it will be apparent to those skilled in the art that the portable terminal can be applied as various devices such as a PDA and a mobile phone.

The information input from the user of the mobile terminal 320 may further include a lighting color for each section within the transmission distance in addition to the emergency transmission distance and the transmission direction, and the transmission distance may be input in a unit of Km, and the display device to be transmitted. It may be input in units of the number (when the display device is uniformly arranged and the user knows the distance between the display devices).

As shown in FIG. 4, the display device 310b receiving the accident information from the portable terminal 320 transmits the source node ID 410, the destination node ID 420, and the emergency node from the emergency guide distance and the direction information. Information about the total number of hops (430) to be displayed, the current number of hops (440), and the display color of the display device, that is, the number of nodes to be displayed in red (450), the number of nodes to be displayed in orange (460), and the nodes to be displayed in yellow. Construct an emergency message containing the number 470 and send it.

Meanwhile, when the display device 310b sends a message, both adjacent display devices 310a and 310c located in both directions may receive the message. Therefore, the adjacent display apparatuses 310a and 310c should be able to recognize the propagation direction of the message transmitted from the display apparatus 310b.

To this end, for example, a unique ID is assigned to each display device, and each display device holds location and ID information of a display device adjacent to each display device, and analyzes the progress direction by referring to the source node ID and the destination node ID of the received message. can do.

That is, the display device 310b determines the display unit (direction B) to perform lighting and the adjacent display apparatus 310c to receive according to the propagation direction information (direction B) transmitted from the mobile terminal, and determines the destination node ID of the transmission message. The message is sent by setting the field 402 to the ID of the adjacent display device 310c to receive.

The adjacent display device 310c determines the validity of the received message using the destination node 420, the total hop number 430, and the current hop number 440 of the received message. The display device 310c confirms that the message is valid when the ID 420 of the destination node of the received message is the same as its ID and the current hop number 440 is smaller than the total hop number 430.

The display device 310c determines color information to be displayed based on the current hop number 440. In the present embodiment, since the current hop number 440 is 1, it is within 10, which is the hop number 450 to be displayed in red, and thus the lighting or flashing operation is performed in red.

Alternatively, the message does not include the color information fields 450, 460, 470, 550, 560, and 570, and each display determines the total number of hops and the current number of hops included in the received message, so that the current number of hops is the total number of hops. It may be implemented to determine what percent range it belongs to, and to perform a lighting or blinking operation with a preset color for each section ratio.

Thereafter, the display device 310c increases the current hop count 540 by 1, changes the source node 510 of the message to 310c, and the destination node 520 to 310d, to send the message to the adjacent display device. Create a message and send it.

As such, the propagation of the emergency message is performed in one direction only (B direction) using the source node and destination node information of the message.

In addition, the display of the emergency situation guidance in the event of an accident is preferably made in one direction so that only the side of the road where the accident occurred, the display device 310c receiving the message is the direction of message propagation among at least two display units arranged in both directions The emergency situation can be displayed in the unidirectional direction by selecting the display portion (B direction) and turning on or blinking.

As described above, the user may determine the number of hops to be propagated and the color for each section to be propagated, input the information to the mobile terminal 320, and the information may be transmitted to the display device 310. And the lighting color for each section may be input to the portable terminal 320, or simply a guide distance may be input.

In this case, when the display device 310b receiving the signal from the mobile terminal 320 converts the distance information into the number of hops in Km and transmits it to the adjacent display device 310c, and the lighting color information for each section is not transmitted. Preferably, the display device 310b is configured to divide the entire display distance by a predetermined ratio to generate lighting color information for each section and transmit the information to the adjacent display device 310c.

On the other hand, in the case of an emergency affecting both directions of the road, an emergency message should be propagated in both directions, and in this case, each of the emergency messages using the destination node of the message shown in FIG. 4 and FIG. Create or transmit the source node ID fields 410 and 510 and / or the destination node ID fields 420 and 520 as NULL values, and the display device which receives them performs lighting and retransmission without determining the direction. It can be implemented in such a way.

6 is a flowchart illustrating an operation of a display device that receives initial emergency information when an emergency situation occurs.

When the police arrive at the point where the accident occurs, the police inputs information such as lighting direction, lighting range, and color for each lighting distance to the mobile terminal (S610), and the mobile terminal converts it into control information and displays the device adjacent to the accident area through sensor network communication. To transmit (S620).

The display device having received the control information interprets this to create an emergency message. The emergency message is information about the source node, the destination node, the total number of hops to be retransmitted, the current number of hops and the display color of the display, that is, the number of nodes to be displayed in red, the number of nodes to be displayed in orange, and the number of nodes to be displayed in yellow. It includes at least one of (S630). The created emergency message is transmitted to another adjacent display device through sensor network communication (S640).

7 is a flowchart illustrating an operation of a display device receiving an emergency message.

When receiving the emergency message (S710), it determines the validity of the received emergency message. To this end, it is checked whether the destination node information of the received message is the same as the current display device, and the number of current hops is within a maximum transmission range smaller than the total number of hops (S720).

If the received message is a valid message, the display device interprets the received message to perform lighting (S730), resets the source node, the destination node, and the current hop number information of the message to create a message to be transmitted (S740). In this case, when the reset current hop number exceeds the maximum hop number, since the current display device is the last display device of the maximum transmission distance, no further message is transmitted (S750), otherwise, the rewritten message is transmitted (S760). . Another adjacent display device receiving the rewritten message performs the above-described steps S710 to S760.

Although the preferred embodiment according to the present invention has been described above, it is only an example and those skilled in the art will understand that various modifications and embodiments are possible therefrom.

1 is a block diagram showing the configuration of a traffic emergency display device according to the present invention.

FIG. 2 is a schematic diagram showing the traffic emergency display device shown in FIG.

3 is a view illustrating an embodiment in which the emergency situation display system according to the present invention performs an emergency situation guide.

4 and 5 is a block diagram showing the configuration of an emergency message according to the present invention.

6 is a flowchart illustrating a procedure between a mobile terminal and a display device.

7 is a flowchart illustrating an operation of a display device receiving an emergency message.

Claims (18)

A wireless communication unit for transmitting and receiving data to and from a mobile terminal or other traffic emergency display device, a display unit for displaying traffic state information externally, a controller for controlling the display of the display unit by processing a lighting control message provided from the communication unit, A plurality of traffic emergency display devices including a power supply unit supplying power to the wireless communication unit, the control unit and the display unit; And And a portable terminal receiving information from an operator and transmitting the lighting control message to the traffic emergency display device. The traffic emergency display device is installed along a center line and constitutes a sensor network. The method of claim 1, wherein the display unit Having means for emitting more than one color Traffic emergency display system using a sensor network characterized in that. The method of claim 1, wherein the display unit At least one on each side of the display device Traffic emergency display system using a sensor network characterized in that. The method of claim 1, wherein the power supply unit Solar cells for collecting solar energy and power storage means for storing the collected solar energy Traffic emergency situation display system using a sensor network comprising a. The method of claim 1, wherein the control unit When the lighting control signal is received, an emergency message is generated based on the lighting control signal and transmitted to a nearby traffic emergency display device. If an emergency message is received from a nearby traffic emergency indicator, resend it. Traffic emergency display system using a sensor network characterized in that. The method of claim 5, wherein the emergency message Total hops to be forwarded, including current hop count information Traffic emergency display system using a sensor network characterized in that. The method of claim 6, wherein the control unit In case of receiving the emergency message, if the current hop number is less than the total number of hops, control the lighting and blinking operation of the display unit according to the information included in the emergency message, and increase the current hop number of the received emergency message by 1 and retransmit it. To do Traffic emergency display system using a sensor network characterized in that. The method of claim 6, wherein the control unit When the emergency message is received, the emergency message display system using a sensor network, characterized in that the emergency message is ignored if the current number of hops is more than the total number of hops. The method of claim 5, wherein the emergency message Including source node ID, destination node ID, total hops, current hops, hops by color Traffic emergency display system using a sensor network characterized in that. The method of claim 9, wherein the control unit Determining the propagation direction of the emergency message using the source node ID and the destination node ID Traffic emergency display system using a sensor network characterized in that. delete In a traffic emergency display control method performed by a mobile terminal in a system consisting of a mobile terminal and a display device installed along a road center line, Receiving control information of the traffic emergency display device; Generating a lighting control message based on the control information; Transmitting the lighting control message to the adjacent display device. Traffic emergency display control method using a sensor network comprising a. The method of claim 12, wherein the control information, At least one of the emergency transmission distance, the transmission direction, the lighting color for each section in the transmission distance Traffic emergency display control method using a sensor network characterized in that. In the traffic emergency display control method performed by the display device in a system consisting of a mobile terminal and a display device installed along the center line of the road, Receiving a lighting control message from the mobile terminal; Interpreting the control information and generating an emergency message and transmitting the message to an adjacent display device; Determining the validity by interpreting the received message by the adjacent display device receiving the emergency message; Lighting the display unit in accordance with the valid emergency message as a result of the determination; Rewriting, by the display device, a valid emergency message received and retransmitting it to an adjacent display device; Traffic emergency display control method using a sensor network comprising a. 15. The method of claim 14 wherein the emergency message is At least one of a source node number, a destination node number, maximum forward hop number information, current hop number information, lighting hop number information for each color, and lighting direction Traffic emergency display control method using a sensor network characterized in that. The method of claim 14, wherein the validity determining step Determining validity of received message using destination node number, current hop count information and maximum forward hop count information of received emergency message Traffic emergency display control method using a sensor network characterized in that. The method of claim 14, wherein the lighting step, Determining a display color by using the current hop count information of the received emergency message and the lighting hop count information for each color Traffic emergency display control method using a sensor network comprising a. The method of claim 14, wherein the retransmission step, Determining whether to retransmit using the current hop number information and the maximum forward hop number information of the rewritten message; Traffic emergency display control method using a sensor network comprising a.

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