KR101243863B1 - Assessment of preemption signal control system using utis communication network - Google Patents

Abstract

PURPOSE: An emergency vehicle priority signal control system using UTIS is provided to increase the punctuality and moving speed of an emergency vehicle by giving a signal priority to an emergency vehicle. CONSTITUTION: An emergency vehicle priority signal system previously determines a moving path of an emergency vehicle. OBE(On-board equipment) is installed in the emergency vehicle. A CNS(Car Navigation System) is connected to the OBE. RSE(Road-Side Equipment) provides UTIS(Urban Traffic Information System) network(4). A controller(5) controls a traffic light. A local traffic center(9) controls RSEs and the controllers. [Reference numerals] (10) Communication network; (4) UTIS network; (5) Controller; (9) Local traffic center

Description

Emergency vehicle priority signal control system using UTIAS {Assessment of preemption signal control system using UTIS communication network}

The present invention increases the moving speed and timeliness of emergency vehicles by giving priority signals to the direction of emergency vehicles within the range of minimizing the delay of other vehicles at the intersection by using the Urban Traffic Information System (UTIS) network. An emergency vehicle priority signal control system.

As the demand for automobiles increases and the road supply rate decreases, traffic congestion frequently occurs. Such traffic congestion causes environmental damage, noise, fuel consumption, and social loss due to congestion. In particular, as the population of urban centers increases, such traffic congestion is becoming a social problem.

Accordingly, when an emergency vehicle that requires timeliness is required to move a road to cope with an emergency situation, traffic congestion frequently fails to move to a destination place on time and thus fails to properly cope with an emergency situation. In this case, the emergency vehicle refers to a special vehicle used for emergency purposes to protect and rescue citizens from accidents and crimes such as fire trucks, ambulances, police cars, military vehicles, criminal use vehicles, criminal transport vehicles, and escort vehicles.

For example, in the case of a fire truck that aims to arrive at an accident place within 5 minutes of receiving a report, traffic congestion accounts for 40% of the reasons for not arriving on time.

In order to solve this problem, Korea has emphasized that concession lanes do not obstruct the driving of emergency vehicles when the emergency vehicles drive to increase the timing of emergency vehicles. However, practical traffic regulations and facilities are not prepared. As a result, emergency vehicles are delayed in dealing with emergency situations due to traffic congestion, thereby increasing damages due to incidents, fires, and first aid. In other words, in order to minimize the damage caused by an emergency situation, traffic regulations and facilities that make emergency vehicles travel quickly to their destinations must be provided.

Accordingly, various methods of emergency vehicle priority signal control have been researched to increase the moving speed and timing of emergency vehicles by giving priority signals to an emergency vehicle at an intersection where there are many conflicts or long waiting times.

1 is a block diagram showing a traffic light control system for emergency vehicles (hereinafter referred to as a prior art) disclosed in Patent No. 10-0470448.

The prior art 100 of FIG. 1 is largely a disaster prevention center 101, emergency vehicle traffic signal controllers 103-1, 103-2, ..., 103-n, traffic signal controllers 103-1,. Emergency signal lamps 105-1, ..., 105-n which are controlled by the (103-n) and output the status, and sensors installed in a specific building to detect fire, gas leak, etc. And transmission apparatuses 107-1,..., 107-n connected to each other, and hospitals 110, police stations 120, and fire stations 130 that can cope with emergencies.

Also, the disaster prevention center 101, emergency vehicle traffic signal controllers 103-1, ..., (103-n), transmitters 107-1, ..., (107-n), hospitals ( 110, the police station 120 and the fire station 130 are connected to a wired or wireless network 150 to transmit and receive data with each other.

If the emergency occurrence signal is input from the transmitting apparatuses 107-1, ..., 107-n, the disaster prevention center 101 is adjacent to the emergency occurrence notification report inputted from the manager, the hospital 110 or the police station. Through the location information of the 120 or the fire station 130, after setting the moving path between the emergency report and the hospital 110 or police station 120 or the fire station 130, each installed on the road of the set moving path Collects information about the traffic signal controllers 103-1, ..., 103-n for emergency vehicles.

In addition, the disaster prevention center 101 includes controller identification information and vehicle movement path information for each of the emergency vehicle traffic signal controllers 103-1, ..., 103-n installed on the road through which the emergency vehicle passes. An emergency situation message is generated, and the generated emergency situation message is output to the traffic signal controllers 103-1, 103-2, ..., 103-n for emergency vehicles.

In addition, the traffic signal controllers 103-1,..., And 103-n output a signal according to the movement route of the emergency vehicle when the emergency situation message is transmitted, so that the emergency vehicle can smoothly move to the destination.

However, when the prior art 100 receives location information from the traffic signal controllers 103-1, ..., 103-n for emergency vehicles, the communication radius of the wireless network 150 is very small, and the mobile data Because the reception rate is very low, the practical limitations of installation in the field are revealed.

In addition, the prior art 100 does not participate in the movement of other vehicles by granting signal priority to emergency vehicles when the traffic signal controllers 103-1, ..., 103-n detect emergency vehicles in the detection area. As a result, the on-timeness of emergency vehicles may increase, but traffic congestion of other vehicles may increase. In particular, when the vehicles are crowded, such as the city center, the application of the priority vehicle priority signal that does not consider the movement of other vehicles increases the conflicts of the vehicles, causing traffic confusion.

In addition, the prior art 100, when the traffic signal controllers (103-1), ..., (103-n) detects the entry of the emergency vehicle to give a minimum lighting time so that the vehicle accident does not occur due to the instantaneous signal change After the signal is output according to the movement route of the emergency vehicle, but the communication radius of the wireless network 150 is very small, the traffic signal controllers 103-1, ..., 103-n detect the emergency vehicle. The emergency vehicle must wait for a signal while giving the minimum lighting time, so that the moving speed and timeliness of the emergency vehicle cannot be effectively increased.

In addition, the prior art 100 simply determines the traffic light appearance according to the entry of the emergency vehicle in the narrow detection area 105, there is a problem that cannot consider the traffic flow and movement situation for the entire intersection.

The present invention is to solve such a problem, the problem of the present invention is to allow the traffic light controller to increase the speed and timing of the emergency vehicle by giving priority to the signal to the emergency vehicle within the scope of minimizing the delay of other vehicles. It is for.

In addition, another problem of the present invention is that base stations, in-vehicle terminals, traffic light controllers transmit and receive data using a UTIS communication network that has a wide communication radius as well as a high mobile data transmission rate, so that priority signal control is accurately and efficiently performed. do.

In addition, another problem of the present invention is to install the traffic light controller in the UTIS network, base stations, emergency vehicle terminals and regional traffic centers installed in the operation, so that the installation cost is reduced, so that the installation work is made easier. It is to.

In addition, another problem of the present invention is that the traffic light controller calculates a correction period by expanding the period or reducing the period according to the moving speed and position of the emergency vehicle, so that the delay of other vehicles does not increase. To give priority to the signal.

In addition, another object of the present invention is to enable a driver of an emergency vehicle to receive a priority signal suitable for a movement route to a destination only by inputting destination information into a terminal in a vehicle when starting driving.

In addition, another problem of the present invention is that the emergency vehicle receives traffic information through the base stations from the local traffic center, so that when the traffic jam is very severe, the traffic route is reset so as to further increase the timing and speed of the emergency vehicle. will be.

The solution means of the present invention for solving the above problems is mounted on the emergency vehicle, accumulated by receiving the movement and speed information of the emergency vehicle from the GPS (Global Positioning System) satellite, and detects the movement route from the current position to the destination Provides on-board equipment (OBE) and Urban Traffic Information System (UTIS) communication network, and when the terminal in the vehicle is connected, the movement and speed information and the movement path information from the connected terminal in the vehicle. The base station receives the collection information, including the collection information, and receives the collection information from the base station, and when the emergency vehicle is close to control the traffic light so that the movement path manifestation that is the traffic light manifestation corresponding to the movement path information is output to the traffic light. In an emergency vehicle priority signal control system comprising a traffic light controller, the traffic light controller is a phase controller. A memory in which a display period, position and speed information, and position information of the signal lamp are stored; The estimated time of passage of the emergency vehicle passing through the traffic light in the present cycle, the proximity movement path manifestation which is the movement route manifestation output at the closest time from the expected passage time, and the proximity movement route manifestation is earlier than the estimated passage time. A detection module that detects whether the outputted first movement path manifestation or the movement path manifestation is outputted later than the estimated time of passage; When the detection module detects the first movement path manifestation, an extension time that is a time obtained by subtracting the extinguishing time of the first movement path manifest from the estimated time of passage from the current manifestation to the first movement route manifestation An extension correction cycle calculation module for calculating an extension time dividing the output periods of each of the extension target manifestations by the extension time per appearance after dividing by the number of target manifestations; When the detection module detects the second movement path manifestation, a reduction time that is a time obtained by subtracting the estimated pass time from the lighting time of the second movement path manifestation is reduced from the current manifestation to before the second movement path manifestation. After dividing by the number of the target manifestation to calculate the reduction time per manifestation includes a reduction correction cycle calculation module for calculating a reduction correction cycle by reducing the output period of each of the reduction target manifestations by the reduction time per appearance.

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According to the present invention having the above-mentioned problems and solving means, since the emergency vehicle is given a priority signal within a range where other vehicles are not delayed, the speed and timing of the emergency vehicle increase.

In addition, according to the present invention, the traffic light controller detects the driving information of the emergency vehicle through the UTIS communication network and calculates the correction period by expanding and reducing the signal time of each of the manifestations according to the position of the scheduled manifestation. Therefore, it provides an efficient priority signal system considering the road traffic situation of the intersection.

In addition, according to the present invention, because the existing UTIS communication network, base stations, in-vehicle terminals and regional traffic centers are used, the installation cost is reduced, and the installation work is easily performed.

1 is a block diagram showing a traffic light control system for emergency vehicles (hereinafter referred to as a prior art) disclosed in Patent No. 10-0470448.
2 is a block diagram illustrating an emergency vehicle priority signal control system according to an embodiment of the present invention.
3 is an exemplary view illustrating a system for controlling emergency vehicle priority signal of FIG. 2.
FIG. 4 is a relation diagram for explaining the emergency vehicle priority signal control system of FIG. 2.
FIG. 5 is a block diagram illustrating the controller of FIG. 2.
6 is a block diagram illustrating a modification period calculation module of FIG. 5.
7 is an exemplary diagram for describing a correction period calculating module of FIG. 6.
FIG. 8 is a flowchart illustrating an operation of the determination module and the correction period calculation module of FIG. 5.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

2 is a block diagram illustrating an emergency vehicle priority signal control system according to an embodiment of the present invention, and FIG. 3 is an exemplary view showing the emergency vehicle priority signal control system of FIG. 2.

The emergency vehicle priority signal system 1 of FIGS. 2 and 3 determines the movement route of the emergency vehicle 2 in advance when the emergency vehicle 2 moves from the waiting place to the accident place or from the accident place to the destination place. When the emergency vehicle 2 enters the intersection 8, the emergency vehicle 2 is outputted by outputting a priority signal according to the movement route of the emergency vehicle 2 from the traffic light 6 within a range in which delays of other vehicles do not increase. It is a traffic light control system to increase the moving speed and punctuality.

In addition, the emergency vehicle priority signal control system 1 includes the on-board equipment 7-1, ..., 7-N installed in the emergency vehicle 2, and the OBE 7-1. CNS (Car Navigation System) 11-1, ..., (11-N) connected to, ..., (7-N) and UTIS (UTIS) installed adjacent to intersection 8 : RSE (Road-side Equipment) 3-1, ..., (3-N) for providing an Urban Traffic Information System (4) network, and a controller (5) for controlling the traffic light (6); It consists of a regional traffic center 9 which manages and controls RSEs 3-1, ..., (3-N) and controllers 5 to generate traffic information.

The UTIS communication network 4 is a wireless communication network to which the wireless communication standard IEEE802.11ma / IEEE 802.11a is applied. The frequency is a channel range for a vehicle terminal, and a basic frequency range of 5725 to 5525 MHz, and an extension of 5250 to 5350 MHz and 5470 to 5650 MHz. Are classified into frequency ranges. Preferably, four of the channels 149, 153, 157, and 161 are used as the basic frequency ranges.

In addition, the UTIS network 4 uses 5250 to 5350 MHz and 5470 to 5650 MHz as the channel range for the bridge, and is configured to use the 5725 to 5525 MHz band as necessary.

In addition, channel 161, which is used as the basic frequency range in the UTIS network 4, overlaps with the channel used in the ETC (Electronic Toll Collection System, High Pass System). Therefore, a technique to avoid the ETC operation area should be applied. Regarding encryption, it is based on the standards of 802.11a / e and WPA2.

The OBEs 7-1, ..., 7-N are installed in the emergency vehicle 2 to generate probe information, and after encoding the generated probe information, the encoded information is connected to the RSE 3-1. Dummy terminal which transmits to (), ..., (3-N).

In addition, OBEs 7-1, ..., (7-N) provide real-time driving information data including location information, speed information, lane information, etc. for emergency vehicle 2 from GPS satellites (not shown). It receives and stores the received driving information data.

In addition, OBEs 7-1, ..., and (7-N) store terminal ID values including information indicating that the vehicle is assigned to the emergency vehicle. 1), ..., (3-N) and the regional traffic centers 9 determine whether the connected vehicle is an emergency vehicle 2.

In addition, OBEs 7-1, ..., and 7-N receive destination information from the driver before driving, and detect a movement route from the current location to the input destination information through the GPS satellites.

In addition, the OBEs 7-1, ..., 7-N store OBE state information including firmware version and map version information, and link information lists including link information and segment information. At this time, the driving information, the movement route information, OBE status information and link information list information will be referred to as collection information.

In addition, OBE (7-1), ..., (7-N) are detected as RSE (3-1) when RSE (3-1) is detected through UTIS network (4) during emergency vehicle (2) movement. When the request for access is received and the request confirmation data is received from the RSE 3-1, the stored collection information is transmitted to the detected RSE 3-1. At this time, the RSE 3-1 transmits the received collected information to the regional traffic center 9 and the controller 5 so that the regional traffic center 9 can install the RSE 3-1, ... In addition, based on the collection information received from (3-N), traffic information tables for the entire region can be processed and generated.

In addition, OBE (7-1), ..., (7-N) receives the traffic information processed by the local traffic sensor (9) from the connected RSE (3-1), and receives the received traffic information CNS ( 11-1), through the output through the (11-N), emergency vehicle driver through the CNS (11-1), ..., (11-N) through the traffic information output through the entire area Alternatively, traffic information about a movement route to a destination may be provided. At this time, the traffic information means 'region traffic information', which is traffic information of detection areas of each of RSE (3-1), ..., (3-N) currently connected, and 'region', which is traffic information of the entire area. Traffic information 'and' national traffic information ', which is traffic information for the entire country's street network.

RSEs (3-1), ..., (3-N) are base station terminals installed at intersections (8) and roadside networks and provide a UTIS communication network (4), and local traffic through the UTIS communication network (4) Data between center 9 and OBE 7-1, ..., (7-N) or between OBE 7-1, ..., (7-N) and controllers 5 To be transmitted and received. That is, the RSE (3-1) receives the collected information from the OBE (7-1), ..., (7-N) and transmits it to the regional transport center (9), the traffic from the regional transport center (9) It receives the information and transmits it to OBE (7-1), ..., (7-N), and collects the information received from OBE (7-1), ..., (7-N) And transmits the intersection information received from the controller 5 to the connected OBEs 7-1, ..., 7-N. In this case, the intersection information includes signal manifestation information including information on the type of manifestation and the currently lit manifestation, the estimated time of arrival of the intersection, the remaining time, the position of the intersection stop line, and the like.

That is, the RSEs 3-1, ..., (3-N) transmit the collection information received from the connected OBEs 7-1, ..., (7-N) to the controller 5. The controller 5 may calculate a correction period to be applied to the priority signal by using the movement path information of the collected information, the position and the speed information of the emergency vehicle 2. At this time, the calculation method of the correction period will be described in detail with reference to FIG.

In addition, RSEs (3-1), ..., (3-N) are configured to selectively set a scan target channel, and move to another frequency when affected by another signal in a band of a channel (DFS; Dynamic Frequency Selection) technology is applied.

In addition, the RSEs 3-1, ..., (3-N) are connected to the regional traffic center 9 and the communication network 10 to transmit and receive data with the regional traffic center 10.

In addition, RSEs (3-1), ..., (3-N) are OBEs (7-1), ..., (7-) installed in each of the emergency vehicles (2) detected through the UTIS network (4). When receiving a connection request including respective terminal ID values from N), it is determined whether the connected vehicle is the emergency vehicle 2 through the received terminal ID value.

In addition, RSEs (3-1), ..., (3-N) receive the collection information from the connected emergency vehicles OBE (7-1), ..., (7-N), the received collection information Is transmitted to the controller 5 through the UTIS network 4 or to the regional traffic center 9 through the communication network 10.

In addition, RSEs (3-1), ..., (3-N) receive traffic information data processed at the regional transportation center (9) from the regional transportation center (9), and request contact through the UTIS network (4). The traffic information data transmitted to OBE (7-1), ..., (7-N) is transmitted.

In addition, RSEs (3-1), ..., (3-N) are located in the real-time location, movement speed and nearest emergency location of the emergency vehicle (2) processed by the regional transportation center (9) from the regional transportation center (9). Transmits driving information, including.

The controller 5 is a terminal for controlling the traffic light 6, and transmits the manifestation information and the manifestation period of the traffic light 5 in accordance with a predetermined cycle.

In addition, when the controller 5 receives the movement route information of the emergency vehicle 2 received from the regional traffic center 9 from the RSE 3-1, the controller 5 controls the traffic light 6 based on the movement route information to control the emergency vehicle ( The correction period for giving priority signal to 2) is calculated. In this case, the correction period refers to a manifestation cycle in which a manifestation according to a movement route is output when the emergency vehicle 2 passes through the intersection 8 by reducing or expanding the manifestation period of the traffic light using the speed and position of the emergency vehicle. do.

That is, when the controller 5 receives the collection information of the OBEs 7-1, ..., (7-N) from the RSE 3-1, the controller 5 based on the movement route information, the speed information of the emergency vehicle and the location information. The correction period is calculated, and the timing of the emergency vehicle 2 is remarkably increased by controlling the traffic light 6 so that the traffic light 6 is turned on and off in accordance with the calculated correction period.

The regional traffic center 9 is connected to the RSEs 3-1, ..., (3-N) and the emergency vehicles received from the RSEs (3-1), ..., (3-N) and As described above, the traffic information is processed based on the collection information of other vehicles, and the processed traffic information is transmitted to the RSEs 3-1, ..., and (3-N). At this time, the methods for the regional traffic center 9 to receive the collected information from the RSEs 3-1, ..., and (3-N) to generate and process the traffic information are techniques commonly used in traffic information systems. Therefore, detailed description will be omitted.

In addition, the regional traffic center 9 is connected to the controller 5 and the communication network 4 to receive signal manifestation information and priority signal application information from the controller 5.

FIG. 4 is a relation diagram for explaining the emergency vehicle priority signal control system of FIG. 2.

In the OBE 7 installed in the emergency vehicle 2, destination place and terminal ID values are stored. In this case, the target place includes places for coping with damage caused by an accident, such as a place where an accident occurs or an emergency room.

In addition, the OBE 7 detects the movement route from the current position to the target place in real time as the emergency vehicle 2 moves. At this time, the OBE 7 includes a moving direction at the intersection included on the moving path.

The OBE 7 installed in the emergency vehicle 2 receives and stores the location information of the emergency vehicle 2 in real time from a GPS satellite (not shown), and enters the detected RSE when entering the detection area of the UTSI network 4. 3) send connection request data including the terminal ID.

When the RSE 3 receives the connection request data from the OBE 7 entering the sensing area, the RSE 3 permits access through the terminal ID value, and the OBE 7 connected to the traffic information previously transmitted from the regional traffic center 9 is connected. To send.

OBE (7) outputs the traffic information received from the connected RSE (3) to the outside through the CNS (10), connected to the collected information received in real time from the GPS satellite and the movement route data calculated in real time Send to RSE (3).

The RSE 3 transmits the collected information and the movement route data transmitted from the OBE 7 to the regional traffic center 9, and the regional traffic center 9 transmits the traffic information based on the collected information received from the RSE 3. Update the. At this time, the updated traffic information data is transmitted to the RSE 3 again, and when the RSE 3 receives the updated traffic information data from the regional traffic center 9, the traffic information data updated to the OBEs 7 connected thereafter. Send in real time.

In addition, the RSE 3 transmits the terminal ID value and the collection information received from the OBE 7 to the controller 5.

The controller 5 determines the entry of the emergency vehicle 2 through the terminal ID value received from the RSE 3, and generates an event for calculating the current modification period.

In addition, the controller 5 calculates the current correction period based on the received movement path data and the current appearance period.

The controller 5 controls the lighting and turning off of the traffic light 6 in accordance with the calculated current correction period so that the priority signal is given to the emergency vehicle 2.

FIG. 5 is a block diagram illustrating the controller of FIG. 2.

The controller 50 of the controller 5 of FIG. 5 includes the current appearance information of the traffic light 6, the movement path data of the collection information received from the RSE 3, the position and speed information of the emergency vehicle 2, and the appearance described below. The memory 51 which stores the current information to which the priority signal calculated by the information generating module 59 is applied and the emergency vehicle determination module 53 which determines whether the entry vehicle is the emergency vehicle 2 based on the received terminal ID value. And a data extraction module 55 which is driven when the emergency vehicle determination module 53 determines that the entry vehicle is the emergency vehicle 2, and collects data for calculating a priority signal correction period, and the data extraction module 55. Correction period calculation module 57 for calculating the current correction period based on the data extracted by the) and the appearance information for generating updated signal manifestation information based on the current correction period calculated by the correction period calculation module 57 Generation module 59 and these control tables And a control module 53 for controlling the phases 51, 54, 55, 57, 59.

In addition, the controller 50 may include a data transceiver 61 for transmitting and receiving data to and from the external communication devices 3, 7, and 9, and signal lamp drivers 63 for controlling driving of the traffic light 6. It is connected to, and controls these connecting objects (61), (63).

The control module 53 is an operating system (O.S) of the controller 5 and controls the control targets 51, 54, 55, 57, and 59.

In addition, the control module 53 periodically crawls the data transmission / reception unit 61 to collect collection information, terminal ID values, and movement path data received from the RSE 3, and to parse the collected data. To store in the memory 51.

In addition, the control module 53 transmits the terminal ID value received by the data transmission / reception unit 61 to the emergency vehicle determination module 54 to determine whether the vehicle detected by the emergency vehicle determination module 54 is the emergency vehicle 2. Be sure to

In addition, the control module 53 transmits a control signal to the data extraction module 55 when the emergency vehicle determination module 54 determines that the entry vehicle is the emergency vehicle 2, and displays the corrected correction period by the data extraction module 55. Information data necessary for calculation are extracted. At this time, the information data includes the current information including the present cycle currently operating in the traffic light 6, the location information and the speed information of the emergency vehicle 2 included in the collected information, and the movement route information of the emergency vehicle 2. Include.

In addition, the control module 53 inputs the data extracted by the data extraction module 55 to the correction period calculation module 57 so that the correction period calculation module 57 calculates the current correction period of the emergency vehicle 2.

In addition, the control module 53 transmits the current correction period calculated by the correction period calculation module 57 to the current information generation module 59 to generate the current information according to the current correction period.

In addition, the control module 53 stores the appearance information generated by the appearance information generation module 59 in the memory 51, and controls the traffic light driver 63 to operate the traffic light 6 according to the generated appearance information. .

In addition, the control module 53 controls the data transmission / reception unit 61 so that the manifestation information generated by the manifestation information generating module 59 is transmitted to the regional traffic center 9.

The memory 51 stores the collection information including the terminal ID value, the driving information, and the movement route data received from the RSE 3 through the data transmitting / receiving unit 61, and stores the display period of the preset traffic light 6. do.

In addition, the memory 51 stores the appearance information generated by the appearance information generation module 59.

The memory 51 also stores a reference value for determining whether the emergency vehicle 2 OBEs 7-1, ..., (7-N) are terminal ID values. In this case, the reference value means a value that can be determined that the terminal ID values received from the RSE 3 are OBEs 7-1, ..., (7-N) of the emergency vehicle 2.

When the terminal ID value received from the data transmission / reception unit 61 is input, the emergency vehicle determination module 54 extracts a reference value from the memory 51 to determine whether the input terminal ID value is included in the reference value. When the ID value is included in the reference value, the entrance vehicle is determined as the emergency vehicle 2 to generate an event.

The data extraction module 55 is driven when an event is generated by the emergency vehicle determination module 54, and the information data means the basic data necessary for the correction period calculation module 57, and more specifically, to the traffic light 6. Extract the first appearance information currently in operation, the movement route information, the location information and the speed information of the emergency vehicle 2.

In addition, the data extraction module 55 inputs the extracted information data to the correction period calculation module 57 under the control of the control module 53.

6 is a block diagram illustrating a modification period calculation module of FIG. 5, and FIG. 7 is an exemplary diagram for describing the correction period calculation module of FIG. 6.

The correction period calculation module 57 of FIG. 6 is extracted by the detection module 571 and the data extraction module 55 for detecting data necessary for the information table 60 to be generated by the table generation module 573 which will be described later. A table generation module 573 for generating an information table based on the information data and the detection data detected by the detection module 571 and a method of calculating a correction period based on the information table generated by the table generation module 573. A calculation method determination module 575 for determining a value, a reduction correction period calculation module 577 which is driven in accordance with the determination of the calculation method determination module 575, and calculates a correction period in a manner that reduces the period of the current manifestation period; It is composed of an extended modification cycle calculation module 579 which is driven in accordance with the determination of the calculation method determination module 575 and calculates a modification cycle in such a manner as to extend the cycle of the current manifestation cycle.

When the data extracted by the data extraction module 55 is input, the detection module 571 uses the positional information and the speed information of the emergency vehicle 2 from the current position to the stop line 15 of the intersection. The estimated travel time T, which is the time for the emergency vehicle 2 to pass through the stop line 15 of the intersection, is detected by adding up the travel time required for the movement and the travel time from the current time.

In addition, the detection module 571 detects the predetermined manifestation 71 defined as the manifestation output from the traffic light 6 at the estimated time T of passage.

In addition, the detection module 571 detects a movement path manifestation that is a traffic light 6 manifestation corresponding to the movement route information extracted by the data extraction module 55. That is, the movement path manifestation means the manifestation of the traffic light 6 suitable for the movement route of the emergency vehicle 2.

The information table generating module 573 includes the manifestation period extracted by the data extraction module 55, the movement route of the emergency vehicle 2, the position information, the speed information, the movement time detected by the detection module 571, and the passage. An information table 70 is generated based on the predetermined time T and the predetermined manifests 71.

In addition, the information table generating module 573 sorts the manifestations M1,..., M4 outputted to the traffic light 6 according to the preset manifestation period from the current time to the chronological order.

In addition, the information table generation module 573 includes the predetermined manifestation 71 detected by the detection module 571 after setting the movement path manifestations M4 detected by the detection module 571 to the beginning and end of the period. Detect the manifestation cycle. At this time, the movement path manifestation M4 formed at the start point of the detected one cycle will be referred to as the first movement path manifestation A1 (73), and the movement path manifestation M4 formed at the end point is referred to as the second movement path manifestation ( It is assumed that A2) (75).

The calculation method determination module 575 determines the correction period calculation method based on the information table 70 generated by the information table generation module 573.

In addition, the calculation method determination module 575 determines whether the predetermined manifestation 71 is the same manifestation as the movement path manifestation M4 on the one manifestation period detected by the information table generating module 573. In the case of the same manifestation as the movement path manifestation (M4), it is determined that the correction period is not calculated separately.

In addition, the calculation method determination module 575 detects the proximity movement path meaning the movement path appearance M4 which is output at the closest time from the estimated time of passage T when the expected manifestation does not match the movement path manifestation M4. The first movement path manifestation A1 (73) is output at a time earlier than the estimated passage time T, or the second movement path manifestation is output at a time slower than the estimated passage time T. A2) (75) and determines the correction cycle calculation method according to the determination result.

That is, the calculation method determination module 575 calculates the extended modification cycle calculation module 579 which will be described later when the proximity movement path manifestation is the first movement route manifestation A1 73 that is output at a time earlier than the estimated passage time T. If the second movement path manifestation (A2) 75 is output at a time slower than the estimated time of passage T, the reduced correction cycle calculation module 577 to be described later is driven.

The reduction correction cycle calculation module 577 is driven when the proximity movement path manifestation is the second movement path manifestation A2 (75), and the estimated time to pass through the lighting time of the second movement path manifestation A2 (75). A reduction time is calculated by subtracting the difference, and the number of reduction target manifestations representing the manifestations from the current manifestation (A3) 77 to the second movement path manifestation (A2) 75 is calculated.

In addition, the reduction correction cycle calculation module 577 divides the calculated reduction time by the number of reduction target manifestations to calculate the reduction time per manifest. In this case, the reduction time per appearance is defined by Equation 1 below.

Equation 1

Reduction time per appearance = △ Tb / Mn, △ Tb = Te-T

T: Estimated passing time (T) for emergency vehicles to reach the stop line

Te: time for which the second travel path manifestation (A2) is turned on

Mn: the number of manifestations from the current manifestation to the second travel path manifestation (A2)

In addition, the reduction correction cycle calculation module 577 calculates a reduction correction cycle in which the output cycle of each of the reduction target manifestations is reduced by the reduction time per manifestation calculated by Equation 1 so that the traffic light (2) enters the intersection. In 6), the appearance corresponding to the movement route of the emergency vehicle 2 is output.

As described above, when the traffic light controller 5 of the present invention detects the emergency vehicle 2, the traffic light controller 5 calculates a reduction modification cycle in which each cycle of the traffic lights 6 is reduced, and operates the traffic light 6 according to the reduction correction cycle. By controlling (6), the appearance corresponding to the movement route is output to the traffic light 6 when the emergency vehicle 2 passes through the intersection.

The extended correction period calculation module 579 is driven when the proximity movement path manifestation is the first movement path manifestation A1 (73), and the lighting time of the first movement path manifestation (A1) 73 at the estimated pass time T. Calculate the extension time by subtracting the difference, and calculates the number of extension target manifestations that represent the manifestations from the current manifest (A3) 77 to the second travel path manifest (A2) 75.

In addition, the extension modification cycle calculation module 579 divides the calculated extension time by the number of extension target currents to calculate the extension time per present time. In this case, the extended time per appearance is defined by Equation 2 below.

Equation 2

Extended time per appearance = △ Tb / Mn, △ Tb = T-Tf

T: Estimated passing time (T) for emergency vehicles to reach the stop line

Tf: Time when first travel path manifestation (A1) is turned off

Mn: the number of manifestations from the current manifestation to the first travel path manifestation (A1)

In addition, the expansion modification period calculation module 579 calculates an expansion modification period in which an output period of each of the extension target manifestations is extended by an extension time per appearance calculated by Equation 2.

As described above, when the traffic light controller 5 of the present invention detects the emergency vehicle 2, the traffic light controller 5 calculates an extended modification cycle in which each cycle of the traffic lights 6 is extended, and operates the traffic light 6 according to the extended modification cycle. By controlling (6), the appearance corresponding to the movement route is output to the traffic light 6 when the emergency vehicle 2 passes through the intersection.

FIG. 8 is a flowchart illustrating an operation of the correction period calculation module of FIG. 6.

The information table generating module 573 generates the information table 70 (S10).

Based on the information table 70 generated in step 10 (S10), the calculation method determination module 575 detects the proximity movement path manifestation, which is the movement path manifestation output at the time closest to the estimated time of passage T (S20). ).

In addition, the calculation method determination module 575 determines whether the proximity movement path manifested in step 20 (S20) is the first movement path manifest A1 (73), which is the movement route manifested to be output faster than the estimated pass time, or the detected proximity movement route. It is determined whether the present time is the second movement path manifest (A2) 75, which is the movement route manifest outputted slower than the estimated time to pass, and if the proximity movement manifest is the first movement route manifest (A1) 73, step 40 (S40). If the proximity movement path manifestation is the second movement path manifestation (A2) 75, step 80 (S80) is performed (S30).

When the proximity movement path manifestation detected in step 30 (S30) is the first movement route manifestation (A1) 73, the extended correction period calculation module 579 performs the first movement route manifestation (A1) (at the estimated time of passage T). An extension time obtained by subtracting the extinguishing time of 73) is calculated (S40).

In addition, the extended correction period calculation module 579 calculates the number of extended target manifestations that are manifestations from the current manifest (A3) 77 to the first travel path manifest (A1) 73 (S50).

In addition, the expansion modification period calculation module 579 calculates the extension time per manifest by dividing the number of extension target manifestations calculated in step 50 (S50) by the expansion time calculated in step 40 (S40).

In addition, the expansion modification period calculation module 579 calculates the expansion modification period by expanding the output periods of each of the extension target manifestations by the extension time per appearance calculated in step 60 (S60) (S70).

If the proximity movement path manifestation detected in step 30 (S30) is the second movement path manifestation (A2) 75, the reduction correction period calculation module 577 calculates the pass time T from the lighting time of the second movement path manifestation. The reduced reduction time is calculated (S80).

In addition, the reduction correction cycle calculation module 577 calculates the number of reduction target manifestations that are manifestations from the current manifestation (A3) 77 to the second movement path manifestation (A2) (75) (S90).

In addition, the reduction correction cycle calculation module 577 divides the reduction time calculated in step 80 (S80) by dividing the number of reduction target manifestations calculated in step 90 (S90) (S100).

In addition, the reduction correction period calculation module 577 calculates the reduction correction period by reducing the output periods of each of the reduction target manifestations by the reduction time per appearance calculated in step 100 (S100).

The appearance information generation module 59 generates the appearance information to which the extended or reduced correction cycles calculated in step 70 (S70) or step 110 (S110) are applied (S120), and the control module 53 performs step 110 (S110). The traffic light driver 63 is controlled to turn on the traffic light 6 according to the information generated in step S130.

1: Emergency vehicle priority signal control system 3-1, ... 3-N: RSE
4: UTIS network 5: controller
7-1, ..., 7-N: OBE 9: Regional Transport Centers
51: memory 53: control module
54: emergency vehicle judgment module 55: data extraction module
57: correction cycle calculation module 59: manifestation generation module
571: information table generation module 573: calculation method determination module
575: reduction correction cycle calculation module 577: expansion correction cycle calculation module

Claims (6)

In-vehicle terminals (OBE: On-board Equipment) mounted on an emergency vehicle and receiving and accumulating the movement and speed information of the emergency vehicle from a GPS (Global Positioning System) satellite and detecting a movement route from a current position to a destination. And a base station that provides a UTIS (Urban Traffic Information System) communication network and receives collection information including the movement and speed information and the movement path information from the connected in-vehicle terminal when the in-vehicle terminal is connected, The emergency vehicle priority signal control system that receives the collection information from the base station, and includes a traffic light controller for controlling the traffic light such that the movement path presence, which is the traffic light manifestation corresponding to the movement path information, is output to the traffic light when the emergency vehicle is close. In:
The traffic light controller
A memory for storing the appearance period of the traffic light, the position and speed information, and the position information of the traffic light;
The estimated time of passage of the emergency vehicle passing through the traffic light in the present cycle, the proximity movement path manifestation which is the movement route manifestation output at the closest time from the expected passage time, and the proximity movement route manifestation is earlier than the estimated passage time. A detection module that detects whether the outputted first movement path manifestation or the movement path manifestation is outputted later than the estimated time of passage;
When the detection module detects the first movement path manifestation, an extension time that is a time obtained by subtracting the extinguishing time of the first movement path manifest from the estimated time of passage from the current manifestation to the first movement route manifestation An extension correction cycle calculation module for calculating an extension time dividing the output periods of each of the extension target manifestations by the extension time per appearance after dividing by the number of target manifestations;
When the detection module detects the second movement path manifestation, a reduction time that is a time obtained by subtracting the estimated pass time from the lighting time of the second movement path manifestation is reduced from the current manifestation to before the second movement path manifestation. And a reduction correction cycle calculation module configured to calculate a reduction correction cycle obtained by dividing the output periods of each of the reduction target manifestations by the reduction time per appearance after dividing by the number of target manifestations. Emergency vehicle priority signal control system. delete delete delete delete delete

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