KR102362083B1 - System for service employing firrst driving of emergency vehicle - Google Patents

Abstract

The present invention relates to a system for an emergency vehicle preemption operating service, which provides a rapid emergency rescue service, comprising: an emergency vehicle terminal for providing current location information and an estimated driving route; a central control center for generally controlling an operation of a traffic light; and a traffic signal controller for driving the corresponding traffic light.

Description

Emergency vehicle priority driving service system {System for service employing first driving of emergency vehicle}

The content disclosed in this specification relates to the field of emergency vehicle priority service technology, and more specifically, controls the traffic lights installed on the moving path of the emergency vehicle during operation of an emergency vehicle such as a fire, disaster, accident, etc. It relates to a technology that can secure the mobility of emergency vehicles.

Unless otherwise indicated herein, the material described in this section is not prior art to the claims of this application, and inclusion in this section is not an admission that it is prior art.

In recent years, compared to the new construction and increase of road and traffic processing facilities, the increase in the number of vehicles can be said to be explosive.

Therefore, roads, highways, and automobile-only roads within the city do not deviate from the identity of the vehicle, causing enormous decoration in the movement of emergency vehicles to save property or life, and the damage caused by this is beyond imagination. to be.

More specifically, as the demand for automobiles has recently increased and the road supply rate is falling, traffic congestion occurs frequently, and this traffic congestion phenomenon causes environmental pollution, noise, fuel consumption of automobiles, and social losses due to congestion. . In particular, as urban centers with densely populated populations increase, traffic congestion is emerging as a social problem.

Accordingly, when emergency vehicles requiring punctuality (e.g., fire engines, ambulances, police cars, military vehicles, criminal investigation vehicles, criminal evacuation vehicles, security vehicles, etc.) move on the road to respond to an emergency situation, There are frequent cases in which emergency situations cannot be properly dealt with because it is not possible to move to a destination on time due to traffic congestion.

In particular, when a sudden emergency such as a fire or a traffic accident occurs, how quickly the emergency vehicle arrives at the accident site is a barometer directly related to whether or not the vehicle is alive or dead. However, when emergency vehicles such as fire trucks, ambulances, and police cars are moved in case of emergency, they depend on the voluntary cooperation of general vehicle drivers after hearing the siren from the emergency vehicle. opportunities are often missed.

However, there are still few ways to control the traffic lights installed at the intersections on the route, only to guide the route that can be moved most quickly among various routes from the current location of the vehicle to the destination when the emergency vehicle is operating. good

Therefore, there is a problem in that an emergency vehicle that is driven following due to waiting or congestion of preceding vehicles by a traffic light at an intersection cannot avoid waiting or congestion, resulting in loss of valuable life and property.

In addition, emergency vehicles have to take the risk of traversing the center line in order to arrive at a destination requiring rescue and rescue within a shorter time, and this has a problem in that a larger accident occurs.

The prior art documents of this background are the following patent documents.

(Patent Document 0001) KR1020050058662 A

For reference, the technology of Patent Document 1 is to secure the mobility of the emergency vehicle by controlling the traffic light installed on the moving path of the emergency vehicle in the route guidance service. It is different in that respect.

In addition, the means of Patent Document 1 is made as follows.

That is, the means of Patent Document 1 is,

The process of requesting route guidance service by providing destination information to the server of the control center when an emergency vehicle is dispatched;

The server of the control center uses GPS to determine the location of the emergency vehicle, and then extracts the shortest route from among various routes to the destination that ensures quick mobility;

The process of requesting control of traffic lights on the extracted route by connecting the centers in charge of traffic lights installed on roads and intersections;

At the request of the control center, the center in charge of traffic lights controls the traffic lights installed on the route so that the mobility of emergency vehicles can be secured;

The control center provides the shortest route to the extracted destination to the emergency vehicle; includes

Therefore, in terms of securing mobility by controlling traffic lights when an emergency vehicle is operating, only a conceptual point is shown as a whole.

The disclosed content basically secures the mobility of the emergency vehicle by controlling the traffic lights installed on the moving path of the vehicle based on the location information through the GPS signal of the vehicle when an emergency situation occurs, as in the prior art.

In this case, according to the embodiment, in the event of heavy rain or snowfall, tunnel, underpass, or emergency vehicle stopping (in broad terms, emergency vehicle is stopped), the GPS signal that can bounce off the emergency vehicle is adjusted to detect the emergency vehicle. We aim to provide an emergency vehicle priority service system that complements the location so that it can be obtained under various conditions.

Emergency vehicle priority service system according to the embodiment,

In case of heavy rain or heavy snow, tunnel, underpass, or emergency vehicle stopping (in general, emergency vehicle is stopped), GPS signals that can bounce from emergency vehicles, that is, GPS location information, are limited in advance each time the GPS location is updated. It is characterized in that it is obtained under various circumstances by adjusting the position of the emergency vehicle within the range.

More specifically, the emergency vehicle priority service system,

an emergency vehicle terminal mounted on an emergency vehicle and providing current location information and an estimated driving route from GPS information when the vehicle is driven;

a central control center for overall controlling the operation of the traffic lights in the emergency vehicle operation based on the current location information of the emergency vehicle and the expected driving route; and

a traffic signal controller for driving a corresponding traffic light according to the control of the central control center; contains

And, in this state, the emergency vehicle terminal,

a) Detect GPS information and GPS strength while driving the vehicle;

b-1) as a result of the detection, if the detected GPS strength corresponds to a preset reference GPS strength, calculating the current location information of the emergency vehicle from the detected GPS information,

b-2) As a result of the detection, if the detected GPS strength does not correspond to the preset reference GPS strength, the GPS location information is adjusted in response to a difference in GPS strength within a preset limit range each time the GPS location is updated, and the emergency vehicle Calculate the current location information of

The central control center is

From the current location information of each emergency vehicle calculated by b-1) and b-2) above, the priority control operation for each intersection traffic light within a preset range on the expected driving route is repeatedly performed until the expected driving route arrives. to do; is characterized by

According to the embodiments, basically, as in the past, in case of an emergency, etc., the mobility of the emergency vehicle is secured by controlling the traffic lights installed on the moving path of the vehicle based on the location information through the GPS signal of the vehicle. do.

In this case, according to the embodiment, when heavy rain or snow, tunnel, underpass, or emergency vehicle is stopped (broadly, when emergency vehicle is stopped), GPS signal that can jump out of emergency vehicle, that is, GPS location information Each time the GPS location is updated, it is adjusted within the preset limit to supplement the location of the emergency vehicle and obtain it under various conditions.

Accordingly, it is possible to continuously secure the location of the emergency vehicle in real time through this, thereby smoothly controlling the traffic lights when the emergency vehicle is operating.

Accordingly, by further controlling the traffic lights on the route on which the emergency vehicle travels to provide rapid mobility to the destination, a rapid emergency rescue and rescue service is provided.

1 is a diagram for conceptually explaining an emergency vehicle priority service system according to an embodiment;
2 is a view showing the overall emergency vehicle priority service system according to an embodiment;
3 is a block diagram illustrating the configuration of an emergency vehicle priority service system according to an embodiment;
4 is a flowchart sequentially illustrating operations of an emergency vehicle priority service system according to an exemplary embodiment;

1 is a diagram for conceptually explaining an emergency vehicle priority service system according to an embodiment.

As shown in FIG. 1, the emergency vehicle priority service system according to an embodiment basically controls the traffic lights installed on the moving path of the emergency vehicle when the emergency vehicle is operating, as in the prior art, to improve the mobility of the emergency vehicle. to secure it.

To this end, the emergency vehicle priority service system performs the following operations in the conventional manner.

That is, in the system, the emergency vehicle is connected to the central control center 200 through the relay of the base station by the emergency vehicle terminal 100, and at this time, the emergency vehicle connects to the GPS by satellite for tracking its location.

In this state, the emergency vehicle acquires its current location information based on GPS information and the expected driving route by the navigator through the emergency vehicle terminal 100 when driving, such as when a fire occurs or an emergency patient occurs. It is provided to the central control center (200).

And, the central control center 200 controls the overall operation of the traffic lights in the emergency vehicle operation through various communication networks based on the current location information and the expected driving route of the emergency vehicle.

So, the traffic signal controller 300 drives the corresponding traffic light 400 according to the control of the central control center.

Accordingly, through this, the emergency vehicle priority service system secures the mobility of the emergency vehicle by controlling the intersection traffic lights installed on the moving path of the corresponding vehicle when an emergency situation occurs (see 'Example b').

In this case, according to one embodiment, the system provides a GPS signal that can bounce off the emergency vehicle when it is raining or snowing, a tunnel, an underpass, or an emergency vehicle is stopped (broadly, when the emergency vehicle is stopped), that is, Each time the GPS location is updated, the location of the emergency vehicle is supplemented by adjusting the GPS location information within the preset limit range to obtain it under various conditions (see 'Example a-1, a-2').

Therefore, through this, the central control center continuously secures the location of the emergency vehicle in real time, so that it is possible to smoothly control the traffic lights during operation of the emergency vehicle. A more specific description continues below.

FIG. 2 is a view illustrating an emergency vehicle priority service system as a whole according to an exemplary embodiment.

As shown in FIG. 2, the system of one embodiment includes emergency vehicle terminals 100-1, 100-2, ..., 100-n mounted on a plurality of different emergency vehicles operating in various emergency situations, and emergency It includes a central control center 200 for controlling the operation of the traffic light on the vehicle driving route, and the traffic signal controllers 300-1, 300-2, ..., 300-n for driving the traffic light through this control.

The emergency vehicle terminals 100-1, 100-2, ..., 100-n are a fire engine, an emergency vehicle, a police vehicle, or the like. In this case, the emergency vehicle terminals 100-1, 100-2, ..., 100-n receive GPS location information while driving, calculate the current location information of the vehicle, and set the estimated driving route by a navigator, etc. After acquiring it, it continues to perform the corresponding operation until it arrives at the destination, that is, the scene of the accident. In this case, according to an embodiment, the operation of calculating the current location information of the emergency vehicle is performed as follows. That is, in the calculation operation, for example, if the fire engine is described as an example, when a fire occurs and the vehicle is driven to the accident site, GPS location information is received from the GPS satellite and when a signal of a certain strength or higher is output, the current location information is displayed. This is done by repeatedly performing the operation of calculating as it is (along with the estimated driving route) and providing it to the central control center through the communication network until the operation is completed. On the other hand, the calculation operation is performed when the GPS signal of a certain strength or higher does not come out, that is, when an emergency vehicle stops at a construction site, or in severe heavy rain, heavy snow, tunnel, or underpass conditions, a preset limit range for each GPS location update. It compensates for the position of the emergency vehicle by adjusting it within the Accordingly, by continuously securing the location of the emergency vehicle in real time from the central control center, it is possible to smoothly control the traffic lights when the emergency vehicle is operating.

The central control center 200 is each traffic signal on the expected driving route from the current location information of each emergency vehicle terminal 100-1, 100-2, ..., 100-n obtained according to an embodiment in this way. The controller operation, that is, the priority control operation for each intersection traffic light within a preset range, is repeatedly performed until the expected driving route arrives. The specific operation is the same as before. For example, when an emergency vehicle needs to make a left turn at a specific intersection, the central control center 200 controls the operation of a traffic light to stop the approaching vehicles so that the left turn of the corresponding vehicle can be stably performed. Meanwhile, in addition, the central control center 200 controls so as to minimize the influence on the traffic lights in the other direction of the intersection based on the speed and location information of the emergency vehicle. That is, in the prior art, since the green signal of the traffic light located in the driving direction of the emergency vehicle is set to be additionally turned on for a preset time, depending on the traffic situation, if the emergency vehicle cannot enter the intersection within the additional lighting time, the next cycle have to wait However, in the embodiment, only a preset number of traffic lights that are closest to the emergency vehicle are controlled based on the speed and location information of the emergency vehicle, so that it is possible to drive without waiting at the intersection. On the other hand, at this time, in addition, the central control center 200 is connected to the information processing device of the department in charge of controlling and in charge of the control of traffic lights, for example, the National Police Agency, so that it operates interlockingly. Alternatively, the central control center 200 may be connected to a related organization, for example, a fire station information processing device, and the like.

The traffic signal controllers (300-1, 300-2, ..., 300-n) in each region (region a, region b, ... , n region) according to the control of the central control center 200 of the corresponding traffic light, as a result, to ensure the mobility of emergency vehicles. Specifically, when the traffic signal controllers 300-1, 300-2, ..., 300-n receive the control request signal for requesting the aforementioned control, they control the signal of a traffic light connected thereto. For example, when a red signal is turned on at a traffic light, the remaining time until the green signal is turned on is shortened so that the green signal is turned on quickly. On the other hand, when the traffic light turns on the green signal, the control is performed to extend the lighting time of the green signal.

3 is a block diagram illustrating the configuration of an emergency vehicle priority service system according to an exemplary embodiment.

As shown in FIG. 3 , the emergency vehicle priority service system according to an embodiment largely includes an emergency vehicle terminal 100 , a central control center 200 , and a traffic signal controller 300 .

In this case, the emergency vehicle terminal 100 receives a key signal input unit 110 for receiving a user setting command such as starting the present service, a GPS receiving unit 120, and an expected driving route from the navigator, and receives the current location information of the vehicle. It includes a data input/output unit 130 for transmitting to the central control center, a vehicle ECU 140 for controlling each unit, and an encryption unit 140 for encrypting and transmitting each information. Additionally, the encryption information here includes identification information of the emergency vehicle terminal.

In addition, the central control center 200 receives the encrypted current location information and the expected driving route of the vehicle and transmits the I/F unit 210 to the traffic signal controller 300 to transmit a corresponding control signal, and the encrypted It includes a decoding unit 220 for decoding the information, and a central server 230 for generating a control signal so that an emergency vehicle has priority at the corresponding intersection from the decoded information.

In addition, the traffic signal controller 300 includes a data input/output unit 310 that receives a control signal related to the priority operation of an emergency vehicle from the I/F 210 of the central control center 200, and receives the control signal. It includes a control unit 320 for controlling the operation of the traffic light accordingly.

In addition, the emergency vehicle terminal 100 receives the service start information and identification information, etc. by the key signal input unit 110 by the emergency vehicle driver or the accompanying assistant. Here, the identification information is, for example, identification information assigned to the emergency vehicle or log-in information. And, the GPS receiver collects current GPS location information. The collected GPS location information is generated as location information of an emergency vehicle. In addition, the data input/output unit 130 acquires the estimated driving route based on route information from the navigator to the destination. In this case, the vehicle ECU 140 displays route information to the destination on the map and provides it so that the driver of the emergency vehicle can check it. The encryption unit 150 encrypts the current location information and identification information of the emergency vehicle so that it can be transmitted to the central control center 200 .

And, the central control center 200, the I/F unit 210 receives the encrypted information from the emergency vehicle terminal 100, specifically, the data input/output unit 130 thereof. The encrypted information includes current location information of the emergency vehicle, identification information of the vehicle, and the like. Here, the identification information is, for example, identification information of the emergency vehicle terminal or identification information provided to the emergency vehicle itself. And, since the received information is transmitted in an encrypted form, the decryption unit 220 performs a decryption function on this information. In this case, it is checked whether the identification information included in the decoded information is an allowed identifier, and a signal control request is first rejected for an unauthorized identifier. On the other hand, when the identification information is an identifier that has been approved in advance, it is checked whether a signal control request has occurred in a previously designated location area based on the vehicle location information. If it is determined that the priority signal control request has not occurred within the designated location area, the request for the priority signal control is rejected. Here, the designated location area means an area within a pre-designated radius (eg, 1 km, etc.) from a pre-designated location, such as a fire station or a police station. Therefore, if the central server 230 confirms that the identification information is the previously authorized identifier and that the priority signal control request has occurred within the predetermined location area, based on the periodically received vehicle location information, each intersection located on the route Through the control of all traffic signal controllers 300, a control request signal is generated and transmitted so that the emergency vehicle can drive directly at the intersection without waiting. In this case, whether emergency vehicles are allowed to stand at the intersection of traffic lights is determined by the control policy of the central server 230 . For reference, this control policy can be set in various ways, but here, 'no waiting' is the default, but if necessary to ensure the safety of passage in the other direction, setting the control policy so that only waiting for a minimum time is performed. also includes At this time, the central server 230 requests the traffic light status information to all the traffic signal controllers 300 located on the route. And when the traffic signal controller 300 receives status information about the traffic light, for example, the lighting status information of the current traffic light such as green signal lighting or red lighting lighting, a control signal of the corresponding traffic light is generated based on this. For example, in this case, the control request signal is a traffic signal controller for a first traffic light closest to the current location of the emergency vehicle and a traffic signal controller for a second traffic light through which the emergency vehicle will pass after the first traffic light. take as an example

In addition, the traffic signal controller 300 receives a signal requesting the data input/output unit 310 to provide the traffic light status information from the central control center 200 or receives a control request signal requesting control of the traffic light. do. When the control unit 320 receives a control request signal for requesting control of the traffic light, the control unit 320 controls the signal of the traffic light connected thereto. At this time, for example, when the traffic light is turning on the red signal, the remaining time until the green signal is turned on is shortened so that the green signal is turned on quickly. On the other hand, when the traffic light turns on the green signal, the control is performed to extend the lighting time of the green signal. In addition, when the control unit 320 receives a signal requesting the provision of traffic light status information, the control center 200 transmits the current status of the traffic light, that is, what signal is lit in the traffic light, to the central control center 200. transmit Here, it is described as an example that the traffic light status information is transmitted only when the central control center 200 requests the traffic light status information, but also includes periodically transmitting the traffic light status information at preset time intervals.

4 is a flowchart sequentially illustrating operations of an emergency vehicle priority service system according to an exemplary embodiment.

As shown in FIG. 4 , the emergency vehicle priority service system according to an embodiment basically assumes the following conditions as before.

That is, the emergency vehicle priority service system according to an embodiment,

The emergency vehicle terminal is mounted on an emergency vehicle, and provides current location information and an estimated driving route from GPS information when the vehicle is driven.

In addition, the central control center controls the overall operation of the traffic lights in the emergency vehicle operation based on the current location information and the expected driving route of the emergency vehicle.

Then, the traffic signal controller drives the corresponding traffic light according to the control of the central control center.

In this state, according to an embodiment, the emergency vehicle priority service system additionally performs the following operation.

That is, first, the emergency vehicle priority service system detects GPS information and GPS strength when the emergency vehicle terminal drives the corresponding vehicle (S401, S403).

Next, as a result of the detection, when the detected GPS strength corresponds to a preset reference GPS strength, current location information of the emergency vehicle is calculated from the detected GPS information (S404).

On the other hand, as a result of the detection, if the detected GPS strength does not correspond to the preset reference GPS strength, the GPS location information is adjusted in response to a difference in GPS strength within a preset limit range each time the GPS location is updated (S404). Current location information of the vehicle is calculated (S405).

For example, when the signal strength of the GPS location information is weak or zero, the adjustment limits the section of the location to be re-collected by setting the range of the updated location.

Specifically, the adjustment is a structure in which the position value is adjusted and reported again within the range even if the position updated again based on the final position is taken further away.

For example, limit the range of 10M in diameter based on the destination. And, when the signal strength of the GPS location information is weak or 0, the location is reported by moving it within a radius corresponding to the actual vehicle location even if the location that is again collected is deviated, that is, a location that has bounced off.

So, through this, in one embodiment, when heavy rain or snowfall, tunnel, underpass, or emergency vehicle is stopped (in broad terms, this is a case where the emergency vehicle is stopped), a GPS signal that can jump out of the emergency vehicle, that is, GPS location information Each time the GPS location is updated, it is adjusted within the preset limit to supplement the location of the emergency vehicle and obtain it under various conditions.

In this regard, the adjustment is another example, when the signal strength of the GPS location information does not correspond to the preset reference GPS strength, based on the distance from the last position of the state to the updated position, each time the GPS position is updated by distance. It is set differently and adjusted for each updated position.

Then, the current location information of the emergency vehicle is encrypted (S406) and provided to the central control center in real time (S407).

So, through this, the central control center as a whole decodes the current location information of each emergency vehicle calculated in this way according to one embodiment (S408-S409), and from this, each intersection traffic light within a preset range on the expected driving route. The priority control operation is repeatedly performed until arrival of the expected driving route (S410).

And, according to this, the traffic signal controller drives the traffic light by this control (S411) to secure the mobility of the emergency vehicle (S412).

Accordingly, through this, one embodiment provides a GPS signal that can bounce off the emergency vehicle when heavy rain or snowfall, tunnel, underpass, or emergency vehicle stops (in broad terms, when the emergency vehicle stops), as described above. , the location of emergency vehicles is supplemented by adjusting the GPS location information within a preset limit range each time the GPS location is updated and obtained under various conditions.

Accordingly, by continuously securing the location of the emergency vehicle in real time, it is possible to smoothly control the traffic lights during the operation of the emergency vehicle.

As described above, one embodiment basically controls the traffic lights installed on the moving path of the vehicle based on the location information through the GPS signal of the vehicle in case of an emergency situation, etc. to secure

In this case, according to one embodiment, when heavy rain or snow, tunnel, underpass, or emergency vehicle stops (in broad terms, when emergency vehicle stops), GPS signals that can jump out of emergency vehicle, that is, GPS location information Each time the GPS location is updated, it is adjusted within the preset limit to supplement the location of the emergency vehicle and obtain it under various conditions.

Accordingly, through this, the embodiment continuously secures the location of the emergency vehicle in real time, thereby making it possible to smoothly control the traffic lights when the emergency vehicle is operating.

Accordingly, by further controlling the traffic lights on the route on which the emergency vehicle travels to provide rapid mobility to the destination, a rapid emergency rescue and rescue service is provided.

Additionally, in one embodiment, in addition to the real-time securing of the location of the emergency vehicle described above under special traffic conditions, in the emergency vehicle itself, specifically, the user (eg, an assistant in the passenger seat) in the emergency vehicle directly controls the operation of the traffic light. Enable remote control (see FIG. 2).

To this end, in one embodiment, the traffic signal controller 300-1, 300-2, ... , 300-n) further comprising a user terminal (not shown) that directly performs remotely.

And, in this case, the user terminal (not shown) performs the following operation.

a) First, when the user terminal is connected to the central control center 200 and the traffic signal controllers 300-1, 300-2, ..., 300-n through a Wi-Fi network during emergency vehicle operation, Connect individual IP addresses as location information, and if not connected to Wi-Fi network, connect the terminal identification number of the mobile communication data network as location information to secure real-time connection.

b) So, through the real-time connection secured in this way, the authority for the priority control is delegated from the central control center 200, and the corresponding operation is linked with the expected driving route guidance of the emergency vehicle terminal to the traffic signal controller 300- 1, 300-2, ... , 300-n) directly and remotely.

In addition, in this case, the central control center 200 is characterized in that it additionally performs the following operation.

Specifically, when the central control center 200 directly controls each traffic signal controller 300-1, 300-2, ..., 300-n by c) the user terminal, the Based on the expected driving route provided from the emergency vehicle terminal through the secured real-time connection, the shortest route suitable for the actual emergency vehicle is recalculated for each of a plurality of different emergency vehicle types and transmitted to the emergency vehicle terminal.

So, through this, the emergency vehicle terminal guides the shortest route corresponding to the recalculated actual emergency vehicle.

And, in addition to this, in this embodiment, the security of information between each device can be smoothly and effectively made.

To this end, in the embodiment, the traffic signal controllers 300-1, 300-2, ... , 300-n connect in real time with the central control center 200 or the user terminal as IoT data, respectively, and corresponding information It consists of an IoT device that configures a hash tree with a lower hash value and mesh networking based on the hash tree and transmits it to the central control center or the user terminal.

In addition, the central control center 200 or the user terminal stores the upper hash value of the hash tree, connects the hash value for each of the IoT device-ized multiple different traffic signal devices, and configures a corresponding hash node for security management. do.

In addition, when the system of the above embodiment controls the above-mentioned traffic signal controller in connection with the BIS (Bus Information System) system, the bus operation around the intersection is slowed down or adapted to the emergency situation, so that an emergency vehicle can be bought more smoothly and quickly to arrive at the branch.

For reference, the BIS system provides various services related to bus operation by collecting and analyzing BIS information on bus routes when a bus is operated on a road or the like.

To this end, this system provides relevant information for the rapid operation of emergency vehicles from the central control center to the BIS system whenever traffic signals are controlled at the intersection, so that the bus runs slowly or in accordance with the emergency vehicles before passing. .

In this case, the related information provided to the BIS system includes its own intersection information, intersection information within a preset area based on this information, and emergency vehicle operation information.

Alternatively, in addition, in this case, the system may provide support such as allowing passengers to stay at their location by providing an alarm to passengers waiting near the intersection in the BIS system through the service terminal at the bus stop. let it be

In this case, in addition to being installed at the bus stop around the own intersection, the service terminal includes being installed at the bus stop around the intersection within a preset area based on this.

For reference, the service terminal is installed at a bus stop around an intersection, and displays information such as bus routes in conjunction with the BIS system, thereby providing related services to passengers.

100: emergency vehicle terminal 200: central control center
300: traffic signal controller

Claims (5)

an emergency vehicle terminal mounted on an emergency vehicle and providing current location information and an estimated driving route from GPS information when the vehicle is driven;
a central control center for overall controlling the operation of the traffic lights in the emergency vehicle operation based on the current location information and the expected driving route of the emergency vehicle; and
a traffic signal controller for driving a corresponding traffic light according to the control of the central control center; contains,
The emergency vehicle terminal,
a) Detect GPS information and GPS strength while driving the vehicle;
b-1) as a result of the detection, if the detected GPS strength corresponds to a preset reference GPS strength, calculating the current location information of the emergency vehicle from the detected GPS information,
b-2) As a result of the detection, if the detected GPS strength does not correspond to the preset reference GPS strength, the GPS location information is adjusted in response to a difference in GPS strength within a preset limit every time the GPS location is updated, and the emergency vehicle Calculate the current location information of
The central control center is
From the current location information of each emergency vehicle calculated by b-1) and b-2) above, the priority control operation for each intersection traffic light within a preset range on the expected driving route is repeatedly performed until the expected driving route arrives. do,
a user terminal that receives authority for the priority control from the central control center when the emergency vehicle is operating and remotely directly performs the corresponding operation on the traffic signal controller;
The user terminal,
a) When operating the emergency vehicle, if it is connected to the central control center and the traffic signal controller via Wi-Fi network, individual IP addresses are connected as location information, and if not connected via Wi-Fi network, mobile communication data network Secure real-time connection by connecting the terminal identification number of
b) receiving the authority for the priority control from the central control center through the secured real-time connection, and remotely directly performing the corresponding operation on the traffic signal controller in connection with the expected driving route guidance of the emergency vehicle terminal;
The traffic signal controller,
Each is connected to the central control center or the user terminal as IoT data in real time, and the corresponding information is configured as a lower hash value and mesh networking based on the hash tree and transmitted to the central control center or the user terminal as an IoT device. composed,
The central control center or the user terminal,
Emergency vehicle priority service system, characterized in that by storing the upper hash value of the hash tree, a plurality of different traffic signal control devices that are IoT devices connect the hash values for each device and configure a corresponding hash node; .
The method according to claim 1,
b-2) is,
If the detected GPS strength does not correspond to the preset reference GPS strength, adjusting for each updated position by setting a different distance each time the GPS position is updated based on the distance from the last position of the corresponding state to the updated position; An emergency vehicle priority service system, characterized by delete The method according to claim 1,
The central control center is
c) When each traffic signal controller is directly controlled remotely by the user terminal, based on the predicted driving route provided from the emergency vehicle terminal through the secured real-time connection, the actual emergency vehicle for each type of emergency vehicle is provided. Recalculate the correct shortest path and transmit it to the emergency vehicle terminal,
The emergency vehicle terminal,
guiding the shortest route suitable for the recalculated actual emergency vehicle; An emergency vehicle priority service system, characterized by
delete

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