JP2021144386A - Emergency travel support system - Google Patents

Abstract

To provide an emergency travel support system for reliably securing an emergency travel line on which an emergency vehicle travels inside an intersection.SOLUTION: An emergency travel support system 1 for supporting travel of an emergency vehicle 10 at an intersection includes: an emergency vehicle identification section for identifying a road on which the emergency vehicle 10 approaching an intersection is traveling as an approach road and also identifying a travel direction of the emergency vehicle 10; a projection image generation section for generating a second projection image which indicates an emergency travel line from an approach road to a road in a travel direction; and a projection device 5 for projecting the second projection image generated by the projection image generation section with an intersection as a screen.SELECTED DRAWING: Figure 1

Description

The present invention relates to an emergency travel support system that supports safe and rapid travel at intersections of emergency vehicles such as ambulances, police cars, and fire engines.

A traffic signal device has been proposed that detects the siren sound transmitted from the emergency vehicle and controls all the traffic lights in the place where the emergency vehicle passes to the impassable display state based on the pitch of the detected siren sound (for example). , Patent Document 1).

Further, when an emergency vehicle approaching an intersection is detected, a technique has been proposed in which a red Beacon provided on a traffic light is rotated while blinking to notify a driver near the intersection of the approach of the emergency vehicle. (See, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 06-251286 Japanese Unexamined Patent Publication No. 09-270092

However, in the prior art, it is possible to notify the driver of the general vehicle of the approach of the emergency vehicle and prevent the general vehicle from entering the intersection, but depending on the stop position of the general vehicle, the running of the emergency vehicle may be hindered. There is a risk that it will end up. That is, since the communication between the drivers of general vehicles is not sufficient, the vehicle may stop in different directions and obstruct the emergency travel line of the emergency vehicle. In addition, a driver of a general vehicle who notices an emergency vehicle approaching at an intersection may stop the vehicle on the emergency driving line at the intersection.

The present invention has been made in view of such a situation, and an object of the present invention is to provide an emergency travel support system that solves the above-mentioned problems and surely secures an emergency travel line on which an emergency vehicle travels in an intersection. ..

The emergency vehicle support system of the present invention is an emergency vehicle support system that supports the travel of an emergency vehicle at an intersection, and identifies an emergency vehicle that identifies the road on which the emergency vehicle approaching the intersection is traveling as an approach road. A unit, a traveling direction specifying unit that specifies the traveling direction of the emergency vehicle, a projected image generating unit that generates a projected image showing an emergency traveling line from the approaching road to the road in the traveling direction, and the intersection as a screen. It is characterized by including a projection device for projecting a projection image generated by the projection image generation unit.
Further, in the emergency travel support system of the present invention, the emergency travel line indicates a range in which the emergency vehicle travels, and the line width may be set wider than the vehicle width of the emergency vehicle.
Further, in the emergency travel support system of the present invention, the emergency travel line may indicate the direction in which the emergency vehicle travels.
Further, the emergency driving support system of the present invention includes a vehicle type specifying unit for specifying the type of the emergency vehicle, and the projected image generation unit has a line width corresponding to the vehicle width of the emergency vehicle whose type is recognized. The emergency travel line of the above may be generated.
Further, in the emergency driving support system of the present invention, the projected image generation unit is used until the approach road is specified by the emergency vehicle identification unit and the traveling direction of the emergency vehicle is specified by the traveling direction specifying unit. , A projection image showing each of the emergency driving lines from the approaching road to all other roads may be generated.
Further, in the emergency driving support system of the present invention, the projected image generation unit is used until the approach road is specified by the emergency vehicle identification unit and the traveling direction of the emergency vehicle is specified by the traveling direction specifying unit. , A projection image showing the emergency travel line from the approaching road to a preset road may be generated.

According to the present invention, it is possible to reliably secure an emergency travel line on which an emergency vehicle travels within an intersection, and the emergency vehicle can smoothly pass through the intersection by traveling on the emergency travel line. It works.

It is a system block diagram of the emergency driving support system which concerns on this invention. It is a figure which shows the structure of the sound collecting device and the traveling support device shown in FIG. It is a flowchart explaining the traveling support operation by the emergency driving support system which concerns on this invention. It is a figure which shows the example of the projection image which the emergency driving support system which concerns on this invention project at an intersection.

Next, an embodiment for carrying out the present invention (hereinafter, simply referred to as “embodiment”) will be specifically described with reference to the drawings.
The emergency driving support system 1 of the present embodiment is a system that supports safe and quick running at an intersection of emergency vehicles 10 such as ambulances, police cars, and fire engines. With reference to FIG. 1, the emergency driving support system 1 generates an emergency driving line of an emergency vehicle 10 based on a sound collecting device 2 that collects sounds on the road and a siren sound collected by the sound collecting device 2. It includes a travel support device 3 and a projection device 5 that projects an emergency travel line generated by the travel support device 3 onto a road.

With reference to FIG. 2, the sound collecting device 2 is composed of unidirectional microphones 20a to 20d having sharp directivity in the direction in which the road extends from the intersection. That is, the unidirectional microphones 20a to 20d are arranged in the direction of the road extending from the intersection.

The intersection shown in FIGS. 1 and 2 is a four-forked road where four roads A to D intersect, and the sound generated on the roads A to D by the four unidirectional microphones 20a to 20d is used as an electric signal. Convert. The unidirectional microphones 20a to 20d can also be individually arranged on the roads A to D.

The projection device 5 projects a projection image showing an emergency travel line on which the emergency vehicle 10 travels, using the intersection and the road around the intersection as a screen. The projection device 5 is, for example, from a laser scan type projector that emits infrared light in addition to the three colors R, G, and B in an optical path and projects an image by a scanning means such as MEMS, or a light source lamp. It can be configured by a liquid crystal projector that projects an image by transmitting light through a liquid crystal panel.

With reference to FIG. 2, the travel support device 3 is an information processing device such as a personal computer that operates under program control. The travel support device 3 includes an input unit 31 such as a keyboard and a mouse, a storage unit 32 such as a flash memory, a network unit 34, and a control unit 40.

The control unit 40 is an arithmetic processing circuit of a microcomputer or the like equipped with a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. A control program for controlling the operation of the traveling support device 3 is stored in the ROM. The control unit 40 functions as a setting condition reception unit 41, an emergency vehicle identification unit 42, and a projection image generation unit 43 by reading the control program stored in the ROM and expanding the control program in the RAM.

The setting condition reception unit 41 receives information about the intersection (number and angle of intersecting roads, number of lanes of each road, road width, etc.) by the input unit 31, and stores the information in the storage unit 32 as the intersection information 33.

The emergency vehicle identification unit 42 analyzes the sound collected by the sound collecting device 2 and detects the siren sound generated by the emergency vehicle 10. Then, the emergency vehicle identification unit 42 executes an emergency vehicle identification process for identifying the road on which the emergency vehicle 10 approaching the intersection is traveling based on the detected siren sound. The emergency vehicle identification unit 42 determines the direction in which the siren sound is generated by comparing the sounds collected by the unidirectional microphones 20a to 20d, and responds to the pitch of the siren sound that changes due to the Doppler effect. , Determine whether the emergency vehicle 10 is in close proximity. It should be noted that a surveillance camera for photographing a vehicle approaching the intersection may be provided, and an emergency vehicle identification process for identifying the approaching emergency vehicle 10 may be executed based on the image captured by the surveillance camera. Further, the emergency vehicle 10 may be provided with a transmitter such as a beacon, and the emergency vehicle identification process may be executed based on the signal from the transmitter.

Further, the emergency vehicle identification unit 42 analyzes the sound collected by the sound collecting device 2 and detects keywords (straight ahead, left turn, right turn, etc.) indicating the traveling direction included in the sound generated by the emergency vehicle 10. Then, the emergency vehicle identification unit 42 functions as a traveling direction specifying unit, and executes a traveling direction specifying process for specifying the traveling direction (straight, left turn, right turn, etc.) at the intersection of the emergency vehicle 10 based on the detected keyword. do. It should be noted that a surveillance camera for photographing a vehicle approaching the intersection may be provided, and a traveling direction specifying process for specifying the traveling direction by a winker display of the emergency vehicle 10 may be executed based on the captured image of the surveillance camera. Further, the emergency vehicle 10 may be provided with a transmitter such as a beacon, and the traveling direction specifying process may be executed based on the signal from the transmitter.

The projection image generation unit 43 generates a projection image showing an emergency travel line from a road specified by the emergency vehicle identification process (hereinafter referred to as an approach road) to another road. The generated projected image is projected by the projection device 5 at an intersection (which may include surrounding roads).

When the traveling direction is not specified by the traveling direction specifying process, the projected image generation unit 43 generates a first projected image showing each emergency traveling line from the approaching road to all the other roads, and the traveling direction specifying process generates the first projected image. When the traveling direction is specified, a second projection image showing only the emergency traveling line from the approaching road to the traveling direction road is generated.

The network unit 34 has a function of communicating with various servers via a network 50 such as the Internet. Through the network unit 34, a part or all of the functions executed by the control unit 40 can be realized by the cloud service provided on the network 50. Further, the intersection information 33 provided on the network 50 may be stored in the storage unit 32.

Next, the assisted driving support operation by the emergency driving support system 1 will be described in detail with reference to FIGS. 3 and 4. It is assumed that the shape of the intersection shown in FIG. 1 is stored in the storage unit 32 as the intersection information 33.

Referring to FIG. 3, the emergency vehicle identification unit 42 analyzes the sound collected by the sound collecting device 2 and waits for the detection of the siren sound generated by the emergency vehicle 10 (step S101).

When the siren sound is detected in step S101, the emergency vehicle identification unit 42 identifies the road on which the emergency vehicle 10 approaching the intersection is traveling as an approach road based on the detected siren sound (step S102).

When the approaching road is specified in step S102, the projection image generation unit 43 generates a first projected image showing each emergency traveling line from the approaching road to all the other roads (step S103). Then, the projection device 5 projects the first projected image generated in step S103 onto the intersection (step S104).

FIG. 4A shows an example in which the road A is specified in step S102 and each emergency traveling line from the road A to the roads B to D is projected on the intersection. The emergency travel line indicates the range in which the emergency vehicle 10 travels, the line width is set wider than the vehicle width of the emergency vehicle 10, and the direction in which the emergency vehicle 10 travels is indicated by an arrow or the like. Therefore, since the general vehicle 11 only needs to stop while avoiding the projected emergency travel line, it is possible to surely secure the emergency travel line on which the emergency vehicle 10 travels in the intersection. Then, the emergency vehicle 10 can smoothly pass through the intersection by traveling on the emergency traveling line.

Next, the emergency vehicle identification unit 42 analyzes the sound collected by the sound collecting device 2 and identifies the traveling direction at the intersection of the emergency vehicle 10 based on the keyword indicating the traveling direction (step S105).

When the traveling direction is specified in step S105, the projection image generation unit 43 generates a second projected image showing only the emergency traveling line from the approaching road to the road in the traveling direction (step S106). Then, the projection device 5 replaces the second projected image generated in step S106 with the first projected image and projects it at the intersection (step S107).

FIG. 4B shows an example in which the road B is specified as the traveling direction by the keyword indicating a right turn in step S105, and only the emergency traveling line from the road A to the road B is projected on the intersection. As a result, the running of the general vehicle 11 can be resumed in a direction that does not affect the running of the emergency vehicle 10. In FIG. 4B, the left turn from road D to road C can be resumed.

Next, the emergency vehicle identification unit 42 analyzes the sound collected by the sound collecting device 2 and waits for the emergency vehicle 10 to pass (step S108). Then, when the passage of the emergency vehicle 10 is detected in step S108, the projection device 5 stops the projection of the second projected image and returns to step S101.

The line width of the emergency traveling line projected on the intersection can be made variable according to the type of the emergency vehicle 10. In this case, the emergency vehicle identification unit 42 is made to function as a vehicle type identification unit, the sound quality and pattern of the siren sound are analyzed, and the type of the emergency vehicle 10 is recognized. Then, the projection image generation unit 43 may generate an emergency travel line having a line width corresponding to the vehicle width of the emergency vehicle 10 whose type is recognized. This makes it possible to project, for example, an emergency travel line with a line width suitable for a fire-fighting vehicle having a wide vehicle width.

Further, in the first projected image generated in step S103, it is preferable to configure it so that the presence or absence of drawing of each emergency traveling line can be set. With this configuration, when the direction in which the emergency vehicle 10 travels is predetermined, only the emergency travel line in that direction can be projected, and when the direction in which the emergency vehicle 10 does not travel is predetermined, that direction can be projected. The projection of the emergency vehicle line can be omitted.

Further, the emergency driving support system 1 and the traffic light may be interlocked with each other, and the traffic light in all directions may be set as a red light when the emergency vehicle 10 is detected. Then, a message notifying the prohibition of entering the intersection, the type of the emergency vehicle 10, and the like can be added to the first and second projected images.

As described above, the present embodiment is an emergency driving support system 1 that supports the traveling of the emergency vehicle 10 at the intersection, and specifies the road on which the emergency vehicle 10 approaching the intersection is traveling as an approaching road. Generates a second projection image showing an emergency vehicle identification unit 42, a traveling direction specifying unit (emergency vehicle specifying unit 42) that specifies the traveling direction of the emergency vehicle 10, and an emergency traveling line from an approaching road to a road in the traveling direction. A projection image generation unit 43 and a projection device 5 for projecting a second projection image generated by the projection image generation unit 43 with the intersection as a screen are provided.
With this configuration, the general vehicle 11 can be retracted to a position that does not interfere with the running of the emergency vehicle 10 based on the projected emergency running line, so that the emergency running line on which the emergency vehicle 10 runs in the intersection can be reliably performed. It can be secured, and the emergency vehicle 10 can smoothly pass through the intersection by traveling on the emergency traveling line.

Further, in the present embodiment, the emergency travel line indicates the range in which the emergency vehicle 10 travels, and the line width is set wider than the vehicle width of the emergency vehicle 10.
With this configuration, since the general vehicle 11 only needs to stop while avoiding the projected emergency travel line, it is possible to surely secure the emergency travel line on which the emergency vehicle 10 travels in the intersection.

Further, in the present embodiment, the emergency travel line indicates the direction in which the emergency vehicle 10 travels.
With this configuration, the general vehicle 11 can stop while avoiding the projected emergency travel line after recognizing the direction in which the emergency vehicle 10 travels.

Further, in the present embodiment, the vehicle type identification unit (emergency vehicle identification unit 42) for specifying the type of the emergency vehicle 10 is provided, and the projection image generation unit 43 corresponds to the vehicle width of the emergency vehicle 10 whose type is recognized. Generate an emergency driving line with a new line width.
With this configuration, it is possible to project an emergency travel line with a line width corresponding to the width of the emergency vehicle 10, and the emergency vehicle 10 smoothly passes through an intersection by traveling on the emergency travel line regardless of the type. can do.

Further, in the present embodiment, the projection image generation unit 43 is used until the approaching road is specified by the emergency vehicle identification unit 42 and the traveling direction of the emergency vehicle 10 is specified by the traveling direction specifying unit (emergency vehicle specifying unit 42). Generates a first projected image showing each emergency driving line from the approaching road to all other roads.
With this configuration, it is possible to call attention to the approach of the emergency vehicle 10 even before the direction of travel is specified, and notify the general vehicle 11 of the emergency travel line on which the emergency vehicle 10 may travel. Can be done.

Further, in the present embodiment, the projection image generation unit 43 is used until the approaching road is specified by the emergency vehicle identification unit 42 and the traveling direction of the emergency vehicle 10 is specified by the traveling direction specifying unit (emergency vehicle specifying unit 42). Generates a first projected image showing an emergency travel line from an approaching road to a preset road.
With this configuration, it is possible to call attention to the approach of the emergency vehicle 10 even before the direction of travel is specified, and notify the general vehicle 11 of the emergency travel line where the emergency vehicle 10 is likely to travel. Can be done.

The present invention has been described above based on the embodiments. This embodiment is an example, and it is understood by those skilled in the art that various modifications are possible in the combination of each of these components, and that such modifications are also within the scope of the present invention.

1 Emergency driving support system 2 Sound collecting device 3 Driving support device 5 Projection device 20a to 20d Unidirectional microphone 10 Emergency vehicle 11 General vehicle 31 Input unit 32 Storage unit 33 Crossing information 34 Network unit 40 Control unit 41 Setting condition reception unit 42 Emergency vehicle identification unit 43 Projection image generation unit 50 Network

Claims (6)

An emergency driving support system that supports the driving of emergency vehicles at intersections.
An emergency vehicle identification unit that identifies the road on which the emergency vehicle approaching the intersection is traveling as an approach road, and
A traveling direction specifying unit that specifies the traveling direction of the emergency vehicle, and
A projection image generation unit that generates a projection image showing an emergency driving line from the approaching road to the road in the traveling direction, and a projection image generation unit.
An emergency driving support system including a projection device that projects a projection image generated by the projection image generation unit using the intersection as a screen. The emergency travel support system according to claim 1, wherein the emergency travel line indicates a range in which the emergency vehicle travels, and the line width is set wider than the vehicle width of the emergency vehicle. The emergency travel support system according to claim 1 or 2, wherein the emergency travel line indicates a direction in which the emergency vehicle travels. A vehicle type identification unit for specifying the type of the emergency vehicle is provided.
The emergency travel support according to any one of claims 1 to 3, wherein the projected image generation unit generates the emergency travel line having a line width corresponding to the vehicle width of the emergency vehicle whose type is recognized. system. Until the approaching road is specified by the emergency vehicle identification unit and the traveling direction of the emergency vehicle is specified by the traveling direction specifying unit, the projection image generation unit extends from the approaching road to all other roads. The emergency travel support system according to any one of claims 1 to 4, wherein a projected image showing each of the emergency travel lines is generated. Until the approaching road is specified by the emergency vehicle identification unit and the traveling direction of the emergency vehicle is specified by the traveling direction specifying unit, the projected image generating unit moves from the approaching road to a preset road. The emergency travel support system according to any one of claims 1 to 4, wherein a projected image showing the emergency travel line to reach is generated.

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