KR20130138446A - Traffic signal system and method for emergency vehicle and traffic signal appratus associated with external transportation device - Google Patents

Abstract

One embodiment of the present invention relates to traffic signal control system and traffic signal control method capable of preventing predicted start of the other vehicles or other pedestrians by blinking a signal or converting a signal into a signal corresponding to an emergency vehicle when an emergency vehicle is detected, and a traffic signal apparatus for independently supplying power to an external traffic apparatus such as a wireless communication device. For the purpose, a traffic signal system according to one embodiment of the present invention includes: a wireless communication device for receiving an emergency signal including a location of an emergency vehicle from the emergency vehicle by communicating with the emergency vehicle; and a traffic signal apparatus for making a current signal blink and then converting into the next signal when a signal corresponding to a direction of an emergency vehicle when the emergency vehicle enters a detection region by analyzing a received emergency signal, and converting the current signal into the next signal when the signal corresponding to the direction of the emergency vehicle coincides with the next signal and then, converting the converted signal into the normal signal state when the emergency vehicle is out of the detection region. [Reference numerals] (110) Wireless communication device;(210) Emergency signal processing unit;(220) Signal control unit;(230) Switch control unit;(240) Switch unit;(AA) Signal operation state;(BB) Signal conversion command;(CC) Emergency signal;(DD) Signal command;(EE) Signal output state;(FF) On/off control command;(GG) On/off state

Description

TRAFFIC SIGNAL SYSTEM AND METHOD FOR EMERGENCY VEHICLE AND TRAFFIC SIGNAL APPRATUS ASSOCIATED WITH EXTERNAL TRANSPORTATION DEVICE}

Embodiments of the present invention relate to a traffic signal system and method for an emergency vehicle, and a traffic signal device connected to an external traffic device. Specifically, when an emergency vehicle is detected, a signal is blinked according to a current signal state, The present invention relates to a traffic signal system and a method for preventing predicted departure of another vehicle or a pedestrian by switching to a corresponding signal, and a traffic signal device that independently supplies power to an external traffic device such as a wireless communication device.

Emergency vehicle means a fire-fighting or first-aid vehicle or other vehicle prescribed by law, and operated in accordance with the provisions of the law for emergency services. The emergency vehicle sounds a siren and has red and green flashing lights. In addition, emergency vehicles can receive various exceptions under the Road Traffic Act.

Emergency vehicles (eg, fire trucks, 119 ambulances, tow trucks, etc.) are dispatched when an emergency situation occurs and move to the place where the emergency situation occurred. At this time, the emergency vehicle must travel to the road as soon as possible to arrive at the emergency situation. If an emergency vehicle is traveling, the police officer manually adjusts the traffic lights on the road to allow the emergency vehicle to proceed quickly. On the other hand, in the absence of a police officer, when an emergency vehicle is detected, a technique has been proposed to automatically switch to a signal of the direction in which the emergency vehicle proceeds so that the emergency vehicle moves without stopping.

On the other hand, most traffic accidents occur due to signal violations and speeding in places where vehicles and pedestrians move, such as intersections. In particular, the incidence of traffic accidents is highest at the yellow light at the intersection. The yellow signal is a sign of stop or ready to start, and drivers are often in a hurry and run faster. The driver often overspeeds without waiting or stopping at the yellow signal before the signal changes from a green to a red signal, resulting in frequent traffic accidents.

On the other hand, the reason for the high traffic accidents at these yellow signals is the predicted departure of crossing pedestrians. Vehicle lights that change at the same time, in particular the yellow and pedestrian traffic lights at the center of the vehicle, change at the same time, which signals that the signal will change.

The pedestrian crossing prediction start means that the pedestrian sees the yellow traffic light of the vehicle traffic light and predicts that the pedestrian traffic light turns green after a while, and then hurries as soon as the signal changes. The reason the predicted start causes a traffic accident is that a yellow light next to the green light means slow down and be ready to stop. Most drivers, however, speed up when they see yellow lights. If the driver starts to accelerate after seeing a yellow light, and the pedestrian who starts predicting starts to enter a crosswalk after seeing a green light, a traffic accident can occur.

Among accidents due to predicted departures, traffic accidents may occur due to the predicted departure of emergency vehicles and general pedestrians or drivers. The signal change for the emergency vehicle is not converted to the next signal, but is converted to a signal suitable for the direction of movement of the emergency vehicle. At this time, when a signal is switched in the opposite direction, a larger traffic accident may be caused. For example, if a general pedestrian or driver who is not aware of an emergency situation starts a predicted departure, a big traffic accident may be caused if an emergency vehicle and a traffic accident coming from the opposite direction occur. In addition, when such a traffic accident occurs, secondary damage may occur in a patient in an emergency vehicle or in an emergency situation where an emergency vehicle should arrive.

An embodiment of the present invention has been made to solve the above problems, an object of the present invention is to switch to the signal corresponding to the emergency vehicle after the signal flashes or switch to the next signal when the emergency vehicle is detected at the intersection It is to provide a traffic signal system and method for an emergency vehicle, which can prevent the predicted departure of other vehicles or pedestrians.

According to another embodiment of the present invention, the traffic signal device includes a first power source supplied to a traffic light, and the power source of the external traffic device connected to the traffic signal device is located in a spare switch slot among switch slots in which the traffic light switch is located. The present invention provides a traffic signal device capable of independently supplying power to an external traffic device without affecting a first power source supplied to a traffic light.

To this end, the traffic signal system according to the first aspect of the present invention, a wireless communication device for communicating with an emergency vehicle to receive an emergency signal containing the location of the emergency vehicle from the emergency vehicle; And when the emergency vehicle enters the detection area by analyzing the received emergency signal, if the signal corresponding to the emergency vehicle direction does not match the next signal, the current signal is flickered and then switched to correspond to the emergency vehicle direction. And a traffic signal device for converting the current signal to the next signal when the signal matches the next signal, and then converting the converted signal to a normal signal state when the emergency vehicle is out of the detection area.

According to a second aspect of the present invention, there is provided a traffic signal control method comprising: an emergency signal receiving step of receiving an emergency signal including a location of an emergency vehicle from a wireless communication device; A signal checking step of checking whether the signal corresponding to the emergency vehicle direction matches the next signal when the emergency vehicle enters the detection area by analyzing the received emergency signal; A signal flashing and switching step of switching the current signal after the signal is flickered if the signal corresponding to the emergency vehicle direction does not match the next signal as a result of the checking; A signal switching step of converting a current signal into a next signal when a signal corresponding to the emergency vehicle direction matches a next signal; And a signal normal step of converting the converted signal into a normal signal state when the emergency vehicle leaves the detection area.

According to a third aspect of the present invention, there is provided a traffic signal device comprising: a switch unit for turning on or off a traffic light; A switch controller to turn on / off an internal switch of the switch unit; A signal controller for transmitting a signal command to the switch controller; A first power supply unit supplying power to the signal lamp, the switch unit, the switch control unit and the signal control unit; The external signal processor for communicating with an external traffic device to receive and process an external traffic signal from the external traffic device; And a second power supply unit installed according to a spare switch slot standard among switch slots in which the switch of the switch unit is located, and supplying power to the external traffic device and the external signal processing unit.

According to an embodiment of the present invention, when an emergency vehicle is detected at an intersection, the signal blinks according to the current signal state and then switches to a signal corresponding to the emergency vehicle or flashes with the next signal, thereby preventing the start of signal prediction of another vehicle or a pedestrian. It works.

Furthermore, an embodiment of the present invention prevents a traffic accident between a general vehicle or a pedestrian and an emergency vehicle due to a predicted departure of a general pedestrian or a driver, so that a patient in an emergency vehicle or an emergency vehicle must arrive at an emergency situation place. Secondary damage can be prevented.

In addition, the embodiment of the present invention by supplying power to the external traffic device through the second power supply unit independent of the first power supply unit for supplying the entire power, it is possible to stably supply power to the traffic light while supplying power to the external traffic device. It has an effect.

In addition, the embodiment of the present invention has an effect that can efficiently operate the space of the traffic signal device by installing a second power supply unit in the spare switch slot of the switch slot.

1 is a block diagram of a traffic signal system for an emergency vehicle according to an embodiment of the present invention.
2 is a detailed block diagram of the traffic signal device of FIG. 1 according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating a traffic signal control method for an emergency vehicle according to an exemplary embodiment of the present invention.
4 is a block diagram of a traffic signal system for an emergency vehicle between adjacent traffic signal devices according to an exemplary embodiment of the present invention.
5 is a flowchart illustrating a traffic signal control method for an emergency vehicle between adjacent traffic signal devices according to an exemplary embodiment of the present invention.
6 is a block diagram of a traffic signal system including an external traffic device according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The configuration of the present invention and the operation and effect thereof will be clearly understood through the following detailed description. Before describing the present invention in detail, the same components are denoted by the same reference symbols as possible even if they are displayed on different drawings. In the case where it is judged that the gist of the present invention may be blurred to a known configuration, do.

1 is a block diagram of a traffic signal system for an emergency vehicle according to an embodiment of the present invention.

As shown in FIG. 1, the traffic signal system 100 includes a wireless communication device 110 and a traffic signal device 120. Here, the traffic signal system 100 manages the traffic light 121 of the intersection where the traffic signal device 120 is located, and communicates with the emergency vehicle 10 to support the emergency vehicle 10 to pass.

Hereinafter, each component of the traffic signal system 100 will be described.

The wireless communication device 110 wirelessly communicates with the emergency vehicle 10 to receive an emergency signal from the emergency vehicle 10. Here, the emergency signal includes the position of the emergency vehicle 10. For example, the emergency vehicle 10 transmits the GPS location information of the emergency vehicle 10 identified through the equipped global positioning system (GPS) to the wireless communication device 110 in an emergency signal.

The traffic signal device 120 analyzes the emergency signal received from the wireless communication device 110, and when the emergency vehicle 10 enters the detection area, a signal corresponding to the moving direction of the emergency vehicle 10 is determined by the next signal. Check if it matches. At this time, even if the emergency vehicle 10 enters the detection area, the traffic signal device 120 may terminate the emergency signal processing process for the emergency vehicle 10 when the vehicle moves out of the detection area and moves to another intersection for a predetermined time. have. That is, the traffic signal device 120 may determine whether to process the emergency signal by determining whether the vehicle is approaching or the vehicle is far away using the change of the position of the emergency vehicle 10.

In addition, the traffic signal device 120 provides an emergency signal when the emergency vehicle 10 enters the detection area by using the detection area information of the emergency vehicle set in advance. Here, the detection area of the emergency vehicle may be set as a polygon around the intersection. In this case, the traffic signal device 120 may apply an emergency signal according to a traffic situation by operating a polygon detection area differently according to traffic conditions and time zones. For example, when the traffic situation is a complicated situation, commute, or the weekend time zone, the traffic signal device 120 may set the detection area wider than the basic detection area to give an emergency signal in advance. On the other hand, when the traffic conditions are idle or weekday morning afternoon time, the traffic signal device 120 may set the detection area narrower than the basic detection area to give an emergency signal late.

When the signal corresponding to the moving direction of the emergency vehicle 10 does not match the next signal, the traffic signal device 120 flashes the current signal of the traffic light 121 and then corresponds to the moving direction of the emergency vehicle 10. Switch to the signal. This is to allow the driver of the general pedestrian or another vehicle waiting for the next signal to prevent the prediction start when the current signal of the traffic light 121 is directly converted into a signal corresponding to the moving direction of the emergency vehicle 10.

In detail, the driver of a general pedestrian or another vehicle waiting for the next signal may recognize that the signal is switched to the next signal when the yellow traffic light for signal switching is turned on in the traffic light 121 to start the prediction. That is, when the traffic signal device 120 actually switches to the signal corresponding to the moving direction of the emergency vehicle 10, and the driver of the general pedestrian or another vehicle predicts and starts the moving direction of the emergency vehicle 10, the traffic accident may occur. May occur. In order to prevent this, the traffic signal device 120 flashes the current signal and then converts the signal into a signal corresponding to the moving direction of the emergency vehicle 10. Here, the traffic signal device 120 may switch the current signal of all the traffic lights 121 at the intersection to the signal flashing state, or may convert some of the traffic lights of the traffic lights 121 to the signal flashing state. For example, some of the traffic lights may be traffic lights of a general pedestrian or a driver of another vehicle.

On the other hand, if the signal corresponding to the moving direction of the emergency vehicle 10 coincides with the next signal, the traffic signal device 120 converts the current signal of the traffic light 121 into the next signal. In this case, when the traffic signal device 120 converts the current signal of the traffic light 121 into the next signal, even if the driver of the general pedestrian or another vehicle waiting for the next signal predicts departure, no traffic accident occurs.

Thereafter, the traffic signal device 120 checks the location information of the emergency vehicle 10 to determine whether the emergency vehicle 10 is out of the detection area. When the emergency vehicle 10 is out of the detection area, the traffic signal device 120 converts the signal converted for the emergency vehicle 10 to a normal signal state.

2 is a detailed block diagram of the traffic signal device of FIG. 1 according to an exemplary embodiment of the present invention.

As shown in FIG. 2, the traffic signal device 120 includes an emergency signal processor 210, a signal controller 220, a switch controller 230, and a switch 240.

The switch unit 240 turns on or turns off the traffic light 121 installed on the road. The switch unit 240 is connected to the corresponding traffic lights 121. The switch unit 240 is provided with a plurality of switches for turning on or off the red / green / yellow / arrow signal of the traffic light 121 installed in each part of the road. The switch unit 240 receives an on / off control command from the switch controller 230, and the internal switch is turned on and off, and transmits an on / off state of the internal switch to the switch controller 230. The state of the traffic light is determined by the on / off state of the internal switch.

The switch control unit 230 performs a function of turning on / off an internal switch of the switch unit 240. The switch controller 230 receives a signal command from the signal controller 220 and outputs an on / off control command for controlling on / off of an internal switch of the switch 240. The switch controller 230 receives the on / off state of the internal switch from the switch 240 and transmits a signal output state to the signal controller 220.

The signal controller 220 receives a signal output state from the switch controller 230 and outputs a signal operating state. The signal controller 220 transmits a signal command to the switch controller 230 so that the switch controller 230 controls the switch 240 on / off. In addition, the signal controller 220 controls the time indicator 122 displaying the remaining time of the walking signal. In this case, the signal controller 220 may receive the signal output state and the remaining time of the time indicator 122 and output the signal operating state.

In addition, the signal controller 220 may output an internal control variable state in addition to the signal operating state. The internal control variable states include signal allocation time, response state, system time, present counter value, and present present number for each direction.

Meanwhile, the emergency signal processor 210 analyzes the emergency signal received from the wireless communication device 110 to check whether the emergency vehicle 10 enters the detection area. The emergency signal processor 210 may check whether the emergency signal processor 210 enters into the detection area through the location information of the emergency vehicle 10 included in the emergency signal.

When the emergency vehicle 10 enters into the detection area, the emergency signal processing unit 210 causes the current signal of the traffic light 121 to blink when the signal corresponding to the moving direction of the emergency vehicle 10 does not match the next signal. The signal control unit 220 is instructed to switch the signal blinking. At this time, the emergency signal processor 210 commands the signal to blink for a predetermined blinking time. When the signal blinking time ends, the emergency signal processor 210 commands the signal controller 220 to switch the signal to a signal corresponding to the moving direction of the emergency vehicle 10.

On the other hand, the emergency signal processor 210 switches the signal to the signal controller 220 to switch the current signal of the traffic light 121 to the next signal when the signal corresponding to the moving direction of the emergency vehicle 10 matches the next signal. Command

Thereafter, the emergency signal processor 210 checks the location information of the emergency vehicle 10 to determine whether the emergency vehicle 10 is out of the detection area. When the emergency vehicle 10 is out of the detection area, the traffic signal device 120 instructs the signal controller 220 to switch the signal converted for the emergency vehicle 10 to a normal signal state.

3 is a flowchart illustrating a traffic signal control method for an emergency vehicle according to an exemplary embodiment of the present invention.

Referring to FIG. 3, first, the traffic signal device 110 checks whether an emergency signal of the emergency vehicle 10 is received from the wireless communication device 110 (S302).

Upon receiving the emergency signal of the emergency vehicle 10, the confirmation result S302, when the traffic signal device 110 receives the emergency signal, the traffic signal device 110 analyzes the emergency signal to determine whether the location of the emergency vehicle 10 enters the detection area. Check whether or not (S304). On the other hand, if the emergency signal of the emergency vehicle 10 is not received, the traffic signal device 110 continuously performs the process (S302) of monitoring the emergency signal reception.

As a result of the check (S304), when the position of the emergency vehicle 10 enters the detection area, the traffic signal device 110 checks the current signal operating state (S306). The traffic signal device 110 receives a signal operation state indicating the on / off state of the switch for turning on or off the traffic light 121 from the signal controller 220 and confirms the current signal operation state. As shown in FIG. 2, the signal operation state is a signal output from the signal controller 220 and is a signal based on an on / off state of an internal switch of the switch unit 240. In detail, when the on / off state of the internal switch of the switch unit 240 is input to the switch controller 230, the on / off state is output from the switch controller 230 as a signal output state, and the signal output state is the signal controller. At 220, the signal is output in the operating state. On the other hand, when the check result (S304), the location of the emergency vehicle 10 enters the detection area, the traffic signal device 110 ends the emergency signal processing process for the emergency vehicle 10.

Next, the traffic signal device 110 checks whether the signal state corresponding to the moving direction of the emergency vehicle 10 is consistent with the next signal state (S308).

As a result of the check (S308), if the signal state corresponding to the moving direction of the emergency vehicle 10 does not match the next signal state, the traffic signal device 110 switches the current signal state to the signal flashing state (S310). ). At this time, the traffic signal device 110 to flash the signal for a predetermined flashing time.

Next, the traffic signal device 110 checks whether the signal blinking time exceeds a preset blinking time (S312).

As a result of the check (S312), when the signal flashing time exceeds the predetermined flashing time, the traffic signal device 110 switches the signal flashing state to a signal state according to the moving direction of the emergency vehicle 10 (S314). On the other hand, if the check result (S312), the signal flashing time does not exceed the predetermined flashing time, the traffic signal device 110 continuously checks the process (S312) to determine whether the flashing time is exceeded.

On the other hand, if the signal state corresponding to the movement direction of the emergency vehicle 10, the check result (S310) and the next signal state, the traffic signal device 110 moves the current signal state of the emergency vehicle 10 Switch to the next signal state corresponding to the direction (S316). This is because the next signal state is a signal corresponding to the direction of movement of the emergency vehicle 10, the traffic signal device 110 switches to the next signal state without flashing a signal.

Thereafter, the traffic signal device 110 checks the location information of the emergency vehicle 10 received from the wireless communication device 110 to determine whether the emergency vehicle 10 is out of the detection area (S318).

As a result of the check (S318), when the emergency vehicle 10 is out of the detection area, the traffic signal device 110 converts the signal state switched in the signal switching process (S314 or S316) to a normal signal state (S320). On the other hand, when the check result (S316), the emergency vehicle 10 does not go out of the detection area, the traffic signal device 110 continuously performs a process (S318) to check whether the emergency vehicle 10 is in the detection area. do.

4 is a block diagram of a traffic signal system for an emergency vehicle between adjacent traffic signal devices according to an exemplary embodiment of the present invention.

As shown in FIG. 4, the traffic signal system 400 includes a radio communication device 1 410, a traffic signal device 1 420, a radio communication device 2 430, and a traffic signal device 2 440. Here, the radio communication device 1 410 and the traffic signal device 1 420 are located at an intersection adjacent to the intersection where the radio communication device 2 430 and the traffic signal device 2 440 are located. In addition, the radio communication device 1 410 and the traffic signal device 1 420 are located at an intersection farther than the radio wave arrival distance 11 of the emergency vehicle 10.

The wireless communication device 2 430 detects the emergency vehicle 10 by receiving an emergency signal of the emergency vehicle 10 entering the preset detection area 1 431. When the wireless communication device 2 430 is located within a distance 11 through which the emergency lane 10 can communicate, the wireless communication device 2 430 may receive an emergency signal from the emergency vehicle 10. The wireless communication device 2 430 transmits the emergency signal received from the emergency vehicle 10 to the traffic signal device 2 440. In addition, wireless communication device 2 430 relays the received emergency signal to wireless communication device 1 410 located at an adjacent intersection.

The traffic signal device 2 440 analyzes the emergency signal received from the wireless communication device 2 430 and performs signal switching for the emergency vehicle 10.

Meanwhile, the wireless communication device 1 410 receives an emergency signal of the emergency vehicle 10 from the wireless communication device 2 430. The wireless communication device 1 410 transmits an emergency signal to the traffic signal device 1 420. In this case, the wireless communication device 1 410 may detect the emergency vehicle 10 entering the detection area 1 411. The detection area 1 411 of the radio communication device 1 410 includes the detection area 2 431 of the radio communication device 2 430. That is, the wireless communication device 1 410 may set the detection area length to be longer than the maximum communication distance through the emergency signal relay of the wireless communication device 2 430. The wireless communication device 1 410 may detect the emergency vehicle 10 entering the detection area 1 411 at a greater distance than the detection area 2 431.

5 is a flowchart illustrating a traffic signal control method for an emergency vehicle between adjacent traffic signal devices according to an exemplary embodiment of the present invention.

The wireless communication device 2 430 checks whether an emergency vehicle signal is received from the emergency vehicle 10 (S402).

The traffic signal device 2 440 determines whether the emergency vehicle 10 enters the detection area through the emergency signal received from the wireless communication device 2 430 (S404).

As a result of the check (S404), when the emergency vehicle 10 enters the detection area, the wireless communication device 2 (430) transmits an emergency vehicle signal to the wireless communication device 1 (410) (S406).

Then, the wireless communication device 1 410 receives an emergency vehicle signal from the wireless communication device 2 430 (S408).

Thereafter, the traffic signal device 1 420 receives the emergency vehicle signal from the wireless communication device 1 410 and checks the location information of the emergency vehicle 10 included in the emergency vehicle signal. Through this, the traffic signal device 1 420 may detect the emergency vehicle 10 in the detection area of the wireless communication device 2 430 (S410).

6 is a block diagram of a traffic signal system including an external traffic device according to another embodiment of the present invention.

As illustrated in FIG. 6, the traffic signal device 500 includes an external signal processor 510, a signal controller 520, a switch controller 530, a switch unit 540, a first power unit 550, and a second power unit. 560. The traffic signal device 500 is connected to the external traffic device 600.

The external traffic device 600 is located outside the traffic signal device 500, and interlocks with the traffic signal device 500 to provide additional traffic functions to a general pedestrian, a vehicle driver, or an operator of the traffic signal device 500. . For example, the external traffic device 600 includes a wireless communication device 110, a pedestrian button input device, a voice generator, and a vehicle detection device shown in FIGS. 1 and 2.

The external traffic device 600 interworks with the external signal processor 510 of the traffic signal device 500. The external traffic device 600 transmits an external traffic signal to the external signal processor 510.

Then, as illustrated in FIG. 3, the external signal processor 510 processes external traffic signals (eg, an emergency vehicle signal, a pedestrian button input signal, a voice generation request signal, etc.) to determine whether signal control is required. When signal control is required, the external signal processor 510 commands the signal controller 520 to control the signal based on the external traffic signal.

The signal controller 520 transmits a signal command to the switch controller 530 so that the switch controller 530 controls the switch 540 on / off.

The switch control unit 530 performs a function of turning on / off an internal switch of the switch unit 540. The switch controller 530 receives a signal command from the signal controller 520 and outputs an on / off control command for controlling on / off an internal switch of the switch unit 540.

The switch unit 540 turns on or turns off the traffic light 121 installed on the road. The switch unit 240 is provided with a plurality of switches for turning on or off the red / green / yellow / arrow signal of the traffic light 121 installed in each part of the road. Here, the plurality of switches are respectively located in the switch slots inside the switch unit 540. Many switches include redundant switches in addition to the number of traffic lights.

The first power supply unit 550 supplies power to the traffic signal device 500 including the external signal processor 510, the signal controller 520, the switch controller 530, and the switch unit 540.

The second power supply unit 560 supplies power to the external transportation device 600 located outside. The second power supply unit 560 supplies power to the external transportation device 600 independently of the first power supply unit 550. Therefore, the second power supply unit 560 does not affect the power supply of the traffic signal device 500 while supplying power to the external traffic device 600. The traffic signal device 500 may stably manage the traffic lights without affecting the control or switching of the traffic lights even when the external traffic device 600 excessively uses the power or suddenly uses the power.

At this time, the second power supply unit 560 may be provided with an AC-DC converter to convert the voltage to the voltage required by the external transportation device 600 to supply power. For example, the AC-DC converter may receive an AC power and convert the AC power into a DC voltage of 5V or 12V and supply the AC power to the external transportation device 600.

On the other hand, the second power supply unit 560 is installed in the size or size of the switch slot in which the extra switch is located among the switch slot in which the plurality of switches are located. When there is no space in which the second power supply unit 560 is installed due to the structure of the traffic signal device 500, it may be installed in accordance with an extra switch slot to increase space efficiency.

On the other hand, the method for providing an image including the signal operating state described above can be implemented in a software program and recorded in a computer-readable recording medium.

For example, the recording medium may be a hard disk, a flash memory, a RAM, a ROM, or the like embedded in each reproduction apparatus, or an external optical disk such as a CD-R or a CD-RW, a compact flash card, a smart media, have.

In this case, the program recorded on the computer-readable recording medium, the method is an emergency signal reception process for receiving an emergency signal containing the location of the emergency vehicle from a wireless communication device, by analyzing the received emergency signal to the emergency vehicle When entering the detection area, a signal checking process for checking whether the signal corresponding to the emergency vehicle direction matches the next signal, the current signal if the signal corresponding to the emergency vehicle direction does not match the next signal as a result of the check A signal flashing and switching process for switching after the signal flashes, and a signal switching process for switching the current signal to the next signal when the signal corresponding to the emergency vehicle direction matches the next signal, and when the emergency vehicle is out of the detection area, A room that includes a signal normal process of converting the converted signal to a normal signal state. You can practice the law.

The functional operations and implementations described in the present specification may be embodied in digital electronic circuitry, computer software, firmware, or hardware, or a combination of any of the foregoing. The implementations described in the present disclosure may be implemented as one or more computer program products, that is, one or more modules associated with computer program instructions encoded on a program storage medium of the type for control of, or for execution by, Lt; / RTI >

While the drawings of the present invention depict operational processes, it should be understood that such operations should be performed in the order shown, in order to obtain the desired results, or that all illustrated operations should be performed. In certain cases, multitasking and parallel processing may be advantageous.

Further, specific embodiments have been described in the specification of the present invention. Embodiments are within the scope of the following claims. For example, the operations described in the claims may be performed in a different order, still achieving desirable results.

The foregoing description is merely illustrative of the present invention, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. Accordingly, the embodiments disclosed in the specification of the present invention are not intended to limit the present invention. The scope of the present invention should be construed according to the following claims, and all the techniques within the scope of equivalents should be construed as being included in the scope of the present invention.

10: emergency vehicle 110: wireless communication device
120: traffic signal device 210: emergency signal processing unit
220: signal controller 230: switch controller
240: switch section 121; Traffic Light
122: time indicator 510: external signal processing unit
520: signal controller 530: switch controller
540: switch unit 550: first power supply unit
560: second power supply unit 600: external traffic device

Claims (8)

A wireless communication device for communicating with an emergency vehicle and receiving an emergency signal including a location of the emergency vehicle from the emergency vehicle; And
When the emergency vehicle enters the detection area by analyzing the received emergency signal, if the signal corresponding to the emergency vehicle direction does not coincide with the next signal, the current signal is flickered and then switched, and the signal corresponds to the emergency vehicle direction. The traffic signal device converts the current signal into the next signal when the signal matches the next signal, and then converts the converted signal into a normal signal state when the emergency vehicle leaves the detection area.
Traffic signal system for an emergency vehicle comprising a. The method of claim 1,
When the emergency vehicle enters into the detection area of the traffic signal device, another traffic signal device that receives detection information of the emergency vehicle from the traffic signal device and detects the emergency vehicle in the detection area of the traffic signal device.
Traffic signal system for an emergency vehicle further comprising a. 3. The method according to claim 1 or 2,
The traffic signal device,
Switch unit for turning on or off the traffic light;
A switch controller to turn on / off an internal switch of the switch unit;
A signal controller for transmitting a signal command to the switch controller; And
When the emergency vehicle enters the detection area by analyzing the emergency signal received from the wireless communication device, if the signal corresponding to the emergency vehicle direction does not match the next signal, the current signal is flashed and then switched, and the emergency vehicle If the signal corresponding to the direction matches the next signal, the current signal is converted to the next signal, and then the signal control unit is commanded to switch the signal to the normal signal state when the emergency vehicle is out of the detection area. Emergency signal processor
Traffic signal system for an emergency vehicle comprising a. The method of claim 3, wherein
The signal control unit,
And receiving a signal command from the emergency signal processor to transmit a signal command to the switch control unit such that the signal state according to the movement direction of the emergency vehicle becomes a straight and a left turn signal. An emergency signal receiving step of receiving an emergency signal including a location of an emergency vehicle from a wireless communication device;
A signal checking step of checking whether the signal corresponding to the emergency vehicle direction matches the next signal when the emergency vehicle enters the detection area by analyzing the received emergency signal;
A signal flashing and switching step of switching the current signal after the signal is flickered if the signal corresponding to the emergency vehicle direction does not match the next signal as a result of the checking;
A signal switching step of converting a current signal into a next signal when a signal corresponding to the emergency vehicle direction matches a next signal; And
A signal normal step of switching the converted signal to a normal signal state when the emergency vehicle is out of the detection area;
Traffic signal control method for an emergency vehicle comprising a. The method of claim 5, wherein
When the emergency vehicle enters the detection area of the traffic signal device, the other traffic signal device transmits the detection information of the emergency vehicle so that the emergency vehicle in the detection area of the traffic signal device is transmitted. Detecting Information Transmission Step
Traffic signal control method for an emergency vehicle further comprising a. Switch unit for turning on or off the traffic light;
A switch controller to turn on / off an internal switch of the switch unit;
A signal controller for transmitting a signal command to the switch controller;
A first power supply unit supplying power to the signal lamp, the switch unit, the switch control unit and the signal control unit;
The external signal processor for communicating with an external traffic device to receive and process an external traffic signal from the external traffic device; And
A second power supply unit installed according to an extra switch slot standard among switch slots in which the switch of the switch unit is located and supplying power to the external traffic device and the external signal processor;
Traffic signal device for an external traffic device comprising a. The method of claim 7, wherein
The second power supply unit,
Traffic signal device for an external traffic device, characterized in that for converting and supplying AC power to a DC voltage corresponding to the power supply of the external traffic device.

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