WO2022201380A1 - 信号制御システム、信号制御方法及びプログラム記録媒体 - Google Patents
信号制御システム、信号制御方法及びプログラム記録媒体 Download PDFInfo
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- WO2022201380A1 WO2022201380A1 PCT/JP2021/012342 JP2021012342W WO2022201380A1 WO 2022201380 A1 WO2022201380 A1 WO 2022201380A1 JP 2021012342 W JP2021012342 W JP 2021012342W WO 2022201380 A1 WO2022201380 A1 WO 2022201380A1
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- 238000000034 method Methods 0.000 title claims description 16
- 230000005856 abnormality Effects 0.000 claims abstract description 28
- 230000004397 blinking Effects 0.000 claims description 8
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 6
- 238000004590 computer program Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/07—Controlling traffic signals
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16Y—INFORMATION AND COMMUNICATION TECHNOLOGY SPECIALLY ADAPTED FOR THE INTERNET OF THINGS [IoT]
- G16Y10/00—Economic sectors
- G16Y10/40—Transportation
Definitions
- the present invention relates to a signal control system, a signal control method and a program recording medium.
- Patent Document 1 discloses a traffic signal control device capable of suppressing traffic confusion in the event of a disaster by performing traffic-sensitive control that enhances the safety of vehicles in the event of a disaster.
- the traffic signal control device described in the document stores an evacuation route in the control area when a disaster occurs, and when a disaster actually occurs in the control area, the vehicle can easily travel along the evacuation route.
- Guidance control is performed to set signal control parameters for intersections included in the evacuation route.
- Patent Document 1 In the method of Patent Document 1, it is necessary to set an evacuation route in advance. For this reason, there is a problem that it is not possible to perform guidance in consideration of the closed section on the evacuation route. In addition, if the road in question is impassable due to road surface damage or a vehicle accident, further influx of vehicles into the section may cause traffic jams and delay evacuation.
- An object of the present invention is to provide a signal control system, a signal control method, and a program recording medium that can suppress further inflow of vehicles into an impassable section due to road surface damage, vehicle accidents, and the like.
- a signal control system comprising determining means and signal control means for controlling a traffic signal at an intersection including said road section to inhibit traffic from flowing into the closed section.
- a computer capable of acquiring images from cameras placed around the road in the control target area detects anomalies in the images captured by the cameras, and determines the shape of the road section starting from the intersection.
- a signal control method is provided for determining passability and controlling a traffic signal at an intersection including the road section so as to prevent traffic from flowing into the closed section. The method is tied to a specific machine, a computer capable of acquiring images from cameras placed around the road in the area to be controlled.
- a computer program (hereinafter referred to as program) is provided for realizing the functions of the signal control system described above.
- the computer program is input to the computer device from an input device or an external communication interface, is stored in the storage device, and drives the processor according to predetermined steps or processes.
- this program can display the results of processing, including intermediate states, at each stage via a display device as required, or can communicate with the outside via a communication interface.
- a computer device for this purpose typically includes, as an example, a processor, a storage device, an input device, a communication interface, and optionally a display device, all of which are connectable to each other via a bus.
- the program can also be recorded on a computer-readable (non-transitory) storage medium. That is, the present invention can also be embodied as a computer program product.
- connection lines between blocks in drawings and the like referred to in the following description include both bidirectional and unidirectional connections.
- the unidirectional arrows schematically show the flow of main signals (data) and do not exclude bidirectionality.
- ports or interfaces at input/output connection points of each block in the figure they are omitted from the drawing.
- a program is executed via a computer device, and the computer device includes, for example, a processor, a storage device, an input device, a communication interface, and, if necessary, a display device.
- this computer device is configured to be able to communicate with internal or external devices (including computers) via a communication interface, whether wired or wireless.
- a signal control system 10 configured to acquire images of roads from cameras 20 arranged around the roads in the control target area can be implemented.
- This signal control system 10 includes passability determination means 11 and signal control means 12 capable of controlling a traffic signal (hereinafter referred to as a signal) 30 .
- the passability determination means 11 determines passability of the road section starting from the intersection based on the abnormality in the image captured by the camera 20 . Then, the signal control means 12 controls the traffic signal at the intersection including the road section so as to suppress the inflow of traffic into the closed section.
- the signal control system 10 detects an abnormality in the image captured by the camera 20, the signal control system 10 operates as follows.
- the signal control system 10 determines whether or not the road section starting from the intersection is passable based on the abnormality in the image captured by the camera 20 .
- an abnormal location indicated by symbol X in FIG. 3 is detected and determined to be impassable.
- the signal control means 12 controls the traffic signal at the intersection including the road section so as to suppress the inflow of traffic into the closed section where the abnormal point indicated by the symbol X is detected.
- signal control is performed using the arrow of the blue light so as to prevent the vehicle from entering the unpassable section. (Specifically, left turns are prohibited).
- an arrow of a blue light is used to prohibit entry into the interrupted section. is not limited to For example, at the corresponding intersection, a red light may be turned on or off, and a message may be displayed to the driver using voice or a display board to notify the driver that entry into the closed section is prohibited.
- FIG. 4 is a diagram showing the configuration of the first embodiment of the present invention.
- the signal control system 100 includes a passability determination unit 101 and a signal control unit 102 .
- Such a signal control system 100 can be realized by a traffic control server or an MEC (Multi-access Edge Computing) server installed near the service area.
- the signal control system 100 can adopt a distributed configuration in which some of the functions are distributed to a computer installed in the traffic signal.
- FIG. 5 is a diagram showing an arrangement example of the cameras 200 used in the first embodiment of the present invention.
- the camera 200 as shown in FIG. 5, a camera attached to a traffic signal 500 at an intersection is used.
- One of the advantages of using a camera attached to such a traffic light 500 is that, as shown in FIG. It is a point that the thing of a signal control system can be diverted.
- the camera 200 is not limited to the camera 200 attached to the traffic light 500 shown in FIG. 5, and other general cameras installed around the road can be used.
- Passability determination unit 101 detects an abnormality in the image captured by camera 200 .
- a method for detecting an abnormality in this image the following can be considered.
- the passability determination unit 101 compares the reference image of the road photographed in advance with the image photographed by the camera 200 . This makes it possible to detect road damage, the presence of fallen objects, the presence of flooding, and the like.
- (2) Abnormalities in the line of flow of vehicles on the road The passability determination unit 101 compares the line of flow of vehicles on the road set in advance with the line of flow of vehicles in the image captured by the camera 200. . This method can also detect the presence or absence of road damage and falling objects.
- the passability determination unit 101 determines that there is an abnormality. Also, at that time, the passability determination unit 101 may confirm whether or not a person is on board the vehicle. For example, if a vehicle is stopped in the center of the lane and there is no person on board the vehicle, it can be inferred that the occupants of the vehicle have left the vehicle for some reason. Also in this case, the passability determination unit 101 determines that there is an abnormality.
- the passability determination unit 101 determines whether or not the road section shown in the image is passable based on the content. For example, the passability determination unit 101 determines whether the road section is passable based on the size of a hole or fallen object on the road and the degree of flooding. In addition, even if the flow line of vehicles on the road greatly deviates from the normal flow line, or if the vehicle is not moving, it is possible to determine whether or not the road is passable based on the degree of deviation.
- the passability determination unit 101 refers to the camera information storage unit 103 to identify an impassable section (impassable section) and requests the signal control unit 102 to perform control.
- FIG. 6 is a diagram showing an example of camera information stored in the camera information storage unit 103.
- the signal control unit 102 When the signal control unit 102 receives the information on the closed section from the passability determination unit 101, it refers to the signal information storage unit 104 and acquires the information on the traffic signals 500 at the intersections at both ends. Then, the traffic lights 500 at both ends of the interrupted section start showing a lighting pattern that prohibits entry into the interrupted section.
- FIG. 7 is a diagram showing an example of traffic light information stored in the traffic light information storage unit 104. As shown in FIG. In the example of FIG. 7, for each intersection, the ID of the traffic signal placed at that intersection and its type information are set. For example, at an intersection A001, four traffic signals with IDs 1001N to 1001W are installed, and all of them have three arrow lamps for left, straight, and right.
- the signal control unit 102 refers to the traffic signal information as described above, determines a lighting pattern that prohibits entry into the closed section according to the type information, and starts the display with the lighting pattern.
- FIG. 8 is a flowchart showing the operation of the signal control system 100 according to the first embodiment of the present invention after detecting an abnormality in an image.
- the signal control system 100 refers to the camera information storage unit 103 to identify the road section in which an abnormality is detected in the image (step S001).
- step S001 it is assumed that the road between the intersection A001 and the intersection A002 in FIG. 9 is cut off.
- the signal control system 100 refers to the traffic signal information storage unit 104 to identify the traffic signal at the intersection that is the end point of the identified road section (step S002).
- the traffic lights 1001N, 1001W, and 1001S of the intersection A001 in FIGS. 9 and 10 are identified.
- the signal control system 100 determines the control contents to be instructed to the specified traffic light (step S003). In order to prevent entry into the above-mentioned closed section, the signal control system 100 determines, for example, the signal 1001N of FIG. do. Similarly, the signal control system 100, for example, for the traffic signal 1001S in FIG. 9, instead of the green light, decides to indicate a blue light arrow permitting only straight forward and left turn. Also, the signal control system 100 determines, for example, the signal 1001W in FIG.
- the signal control system 100 notifies the determined traffic signal of the determined control details (step S004).
- vehicles are prevented from entering the closed section.
- the traffic lights at the intersection A002 may similarly be instructed to turn on lights that prevent the vehicle from entering the closed section.
- the camera 200 can detect an impassable section caused by road surface damage, a vehicle accident, etc., and prevent further inflow of vehicles into the impassable section.
- FIG. 11 is a diagram for explaining the configuration and operation of a traffic light used in the second embodiment of the present invention.
- the traffic signal used in the second embodiment has an electronic display board 31, and can display a message while blinking a red light.
- the signal controller 102 of the present embodiment When the signal control unit 102 of the present embodiment receives the information about the blocked section from the passability determination unit 101, the signal controller 102 flashes a red light to the traffic signals at both ends of the blocked section and sends a message prohibiting entry into the blocked section. display. In the example of FIG. 11, the message "Right turn prohibited when the road is flooded" is displayed. As a result, it is possible to give an instruction equivalent to the arrow of the blue light to the traffic light 1001S in FIG.
- the electric display board 31 need only be installed in a place where it can be visually recognized by the driver of the vehicle, and does not necessarily have to be attached to the traffic light.
- FIG. 12 is a block diagram showing the configuration of a signal control system 100a according to the third embodiment of the invention. A difference from the signal control system 100 of the first embodiment shown in FIG. 4 is that an interrupted section occurrence notification unit 105 is added.
- the interrupted section occurrence notification unit 105 functions as notification means for transmitting the position of the interrupted section to the in-vehicle terminal of the vehicle 400 in the control target area upon receiving notification from the passability determination unit 101 that there is an interrupted section.
- any communication means such as a wireless communication line, a broadcasting line, and road-to-vehicle communication provided by a telecommunications carrier can be used as road traffic information on the vehicle. The terminal can be notified.
- the in-vehicle terminal of the vehicle 400 that has received the notice of the interrupted section can display that fact on the display device and the position on the map. Further, when the route guidance service is in progress, the vehicle-mounted terminal of the vehicle 400 can guide a detour route that avoids the interrupted section.
- the signal control system 100a can also calculate a detour route. In this case, the signal control system 100a may provide a calculated detour route in addition to the interrupted section.
- the above-described first embodiment and second embodiment can be combined. Specifically, based on the contents of the abnormality in the image captured by the camera 200, the signal control system 100 outputs (A) an arrow with a blue light, and (B) blinking of a red light and a message.
- a fourth embodiment that selectively implements is described. Since the configuration and operation of the fourth embodiment are substantially the same as those of the first embodiment, the differences will be mainly described below.
- FIG. 13 is a diagram showing a specific example of signal control by the signal control system of the fourth embodiment of the present invention.
- the symbol X indicates a non-service section including an abnormal point.
- the signal control system 100 uses (A) a blue light arrow and (B) based on the distance between the traffic light and the location determined to be abnormal in the image captured by the camera. Blinking of a red light and output of a message are selectively performed. Specifically, the signal control system 100 instructs (A) the arrow of the blue light to the traffic light of the intersection A002 near the closed section to suppress the inflow of vehicles into the closed section (first control). .
- the traffic signal at the intersection A001 away from the closed section is instructed to (B) blink the red light and output a message (second control).
- the signal control system reduces the number of vehicles traveling from the intersection A001 to the intersection A002, and furthermore, explicitly designates the direction of travel at the intersection A002 just before that intersection.
- FIG. 13 is merely an example, and various modifications can be made based on the details of the abnormality in the image.
- (B) blinking of red light and output of message may be indicated, and (A) arrow of blue light may be indicated at intersection A001 distant from the closed section.
- a message that conveys the danger of entering an impassable section for example, a message such as "There is a submerged vehicle ahead" may be displayed.
- the camera 200 is installed at an intersection, but the example of the camera 200 is not limited to this.
- the signal control system detects the occurrence of an interrupted section based on the camera image, but the signal control system also refers to other information to detect the occurrence of an interrupted section. You may make it For example, disaster information from local governments and the Meteorological Agency and information from probe cars may be used together to allow the signal control system to detect the occurrence of an unserviced section.
- the camera information storage unit 103 and the traffic light information storage unit 104 are provided outside the signal control system. These storage units may be provided.
- the signal control system uses the arrow of the blue light, the flashing of the red light, and the message output. If so, the lighting pattern is not limited to this. For example, if permitted by traffic regulations, etc., there is also a configuration that calls attention to the driver by blinking a red light that lights up at the same time as the arrow of the blue light, blinking a blue light, etc. Adoptable.
- a program that causes a computer (9000 in FIG. 14) functioning as a signal control system to function as a signal control system.
- a computer is exemplified in a configuration including a CPU (Central Processing Unit) 9010, a communication interface 9020, a memory 9030, and an auxiliary storage device 9040 in FIG.
- the CPU 9010 in FIG. 14 may execute the passability determination program and the signal control program.
- each part (processing means, function) of the signal control system 100, 100a described above is realized by a computer program that causes the processor mounted in these devices to execute each process described above using the hardware. can be done.
- the signal control means of the signal control system described above includes: As the control contents of the traffic signal, It is possible to employ a configuration in which the inflow of traffic to the interrupted section is suppressed by an arrow of a blue light. [Third form]
- the signal control means of the signal control system described above includes: Further, as the control content of the traffic light, It is possible to employ a configuration in which the omnidirectional lamps are changed to flashing red lamps and a control is performed to output a message prohibiting the non-passage section.
- the signal control means of the signal control system described above includes: Based on the content of the abnormality in the image taken by the camera, A first control that suppresses the inflow of traffic into the interrupted section by a blue light arrow, or changes the omnidirectional lamps to blinking red lights and outputs a message that prohibits the interrupted section. a second control to perform, A configuration that implements any of the above can be adopted.
- the signal control means of the signal control system described above includes: Based on the distance between the traffic light and the location determined to be abnormal in the image taken by the camera, A configuration can be adopted in which either the first control or the second control is performed.
- the judging means of the signal control system can detect an abnormality in the road by comparing it with a reference image of the road taken in advance, and judge whether or not the road section is passable. .
- the determination means of the above-mentioned signal control system detects an abnormality in the road by comparing a previously set flow line of vehicles on the road with the flow line of the vehicle in the image. It is possible to adopt a configuration that determines whether or not a section is passable.
- the determination means of the signal control system may detect a road abnormality based on the presence or absence of movement of the vehicle in the image contrary to the signal light, and determine whether the road section is passable.
- the signal control system described above further comprises: A configuration may be employed that includes notification means for notifying vehicles located in the control target area of the occurrence of the non-passage section.
- a configuration may be employed that includes notification means for notifying vehicles located in the control target area of the occurrence of the non-passage section.
- [Tenth mode] (Refer to the signal control method from the second point of view above)
- [Eleventh form] (Refer to the program recording medium from the third viewpoint above) It should be noted that the tenth to eleventh forms described above can be developed into the second to ninth forms in the same manner as the first form.
- Reference Signs List 10 100, 100a Signal control system 11 Passability determination means 12 Signal control means 20, 200 Camera 30, 500, 1001N, 1001S, 1001W, 1002W Traffic light 31 Electronic display board 101 Passability determination unit 102 Signal control unit 103 Camera information storage Section 104 Traffic light information storage section 105 Discontinued section occurrence notification section 400 Vehicle A001 to A003 Intersection X Discontinued section 9000 Computer 9010 CPU 9020 Communication interface 9030 Memory
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Abstract
Description
続いて、本発明の第1の実施形態について図面を参照して詳細に説明する。図4は、本発明の第1の実施形態の構成を示す図である。図4を参照すると、カメラ200と、カメラ情報記憶部103と、信号機情報記憶部104と、に接続された信号制御システム100の構成が示されている。信号制御システム100は、通行可否判定部101と、信号制御部102と、を備えている。このような信号制御システム100は、交通管制用のサーバや、サービス対象エリアの近くに設置されるMEC(Multi-access Edge Computing)サーバにより実現できる。また、この信号制御システム100は、これらの装置に加え、信号機に備え付けられた計算機に一部機能を分散した分散構成を採ることもできる。
(1)事前に撮影された道路の基準画像との比較
通行可否判定部101は、事前に撮影された道路の基準画像とカメラ200で撮影された画像との比較を行う。これにより、道路の損傷、落下物の有無、冠水の有無等を検出することができる。
(2)道路上の車両の動線の異常
通行可否判定部101は、事前に設定された道路上の車両の動線とカメラ200で撮影された画像中の車両の動線との比較を行う。この方法によっても、道路の損傷や落下物の有無を検出することができる。
(3)信号灯火に反する前記画像中の車両の動きの有無
通行可否判定部101は、画像中の信号灯火の状態と、画像中の車両の動きとを確認し、信号灯火の状態に反する車両の動きがあった場合に、道路の異常があったものと推定する。例えば、画像中の信号灯火の状態が青であるにも拘わらず、長時間車両が動いていない場合、通行可否判定部101は、異常ありと判定する。また、その際に、通行可否判定部101は、車両に人が搭乗しているか否かを確認してもよい。例えば、車線の中央に車両が停止しており、かつ、その車両に人が搭乗していない場合、当該車両の搭乗者は何らかの理由により車両から離れたものと推測することができる。この場合も、通行可否判定部101は、異常ありと判定する。
続いて、青色の灯火の矢印に代えて、赤色の灯火の点滅とメッセージの表示を行うことにより、不通区間への車両の進入を禁止させるようにした第2の実施形態について説明する。第2の実施形態の構成及び動作は第1の実施形態とほぼ共通するので、以下、その相違点を中心に説明する。
続いて、信号の制御に加えて、周辺エリアの車両に不通区間の存在やその位置を通知するようにした第3の実施形態について説明する。第2の実施形態の構成及び動作は第1の実施形態とほぼ共通するので、以下、その相違点を中心に説明する。
また上記した第1の実施形態と第2の実施形態とを組み合わせることもできる。具体的には、信号制御システム100が、カメラ200で撮影された画像中の異常の内容に基づいて、(A)青色の灯火の矢印と、(B)赤色の灯火の点滅及びメッセージの出力とを選択的に実施する第4の実施形態について説明する。第4の実施形態の構成及び動作は第1の実施形態とほぼ共通するので、以下、その相違点を中心に説明する。
[第1の形態]
(上記第1の視点による信号制御システム参照)
[第2の形態]
上記した信号制御システムの信号制御手段は、
前記交通信号機の制御内容として、
青色の灯火の矢印による前記不通区間への交通の流入の抑止を実施する構成を採ることができる。
[第3の形態]
上記した信号制御システムの信号制御手段は、
前記信号機の制御内容として、さらに、
全方向の灯器を、赤色の灯火の点滅に変更し、かつ、前記不通区間を禁止するメッセージを出力する制御を実施する構成を採ることができる。
[第4の形態]
上記した信号制御システムの信号制御手段は、
前記カメラで撮影された画像中の異常の内容に基づいて、
青色の灯火の矢印による前記不通区間への交通の流入を抑止する第1の制御、又は
全方向の灯器を、赤色の灯火の点滅に変更、かつ、前記不通区間を禁止するメッセージの出力を行う第2の制御、
のいずれかを実施する構成を採ることができる。
[第5の形態]
上記した信号制御システムの信号制御手段は、
前記信号機と、前記カメラで撮影された画像中の異常と判定した箇所との距離に基づいて、
前記第1の制御又は前記第2の制御のいずれかを実施する構成を採ることができる。
[第6の形態]
上記した信号制御システムの前記判定手段は、事前に撮影された道路の基準画像との比較を行うことにより、道路の異常を検出し、前記道路区間の通行可否を判定する構成を採ることができる。
[第7の形態]
上記した信号制御システムの前記判定手段は、事前に設定された道路上の車両の動線と、前記画像中の車両の動線との比較を行うことにより、道路の異常を検出し、前記道路区間の通行可否を判定する構成を採ることができる。
[第8の形態]
上記した信号制御システムの前記判定手段は、信号灯火に反する前記画像中の車両の動きの有無に基づいて道路の異常を検出し、前記道路区間の通行可否を判定する構成を採ることができる。
[第9の形態]
上記した信号制御システムは、さらに、
前記不通区間の発生を前記制御対象エリアに位置する車両に通知する通知手段を備える構成を採ることができる。
[第10の形態]
(上記第2の視点による信号制御方法参照)
[第11の形態]
(上記第3の視点によるプログラム記録媒体参照)
なお、上記第10~第11の形態は、第1の形態と同様に、第2~第9の形態に展開することが可能である。
11 通行可否判定手段
12 信号制御手段
20、200 カメラ
30、500、1001N、1001S、1001W、1002W 信号機
31 電光表示板
101 通行可否判定部
102 信号制御部
103 カメラ情報記憶部
104 信号機情報記憶部
105 不通区間発生通知部
400 車両
A001~A003 交差点
X 不通区間
9000 コンピュータ
9010 CPU
9020 通信インタフェース
9030 メモリ
Claims (11)
- 制御対象エリアの道路周辺に配置されたカメラから道路の画像を取得可能であり、
前記カメラで撮影された画像中の異常に基づいて、交差点を起点とする道路区間の通行可否を判定する通行可否判定手段と、
不通区間への交通の流入を抑止するよう、前記道路区間を含む交差点の交通信号機を制御する信号制御手段と、
を備える信号制御システム。 - 前記信号制御手段は、
前記交通信号機の制御内容として、
青色の灯火の矢印による前記不通区間への交通の流入の抑止を実施する、
請求項1の信号制御システム。 - 前記信号制御手段は、
前記交通信号機の制御内容として、さらに、
全方向の灯器を、赤色の灯火の点滅に変更し、かつ、前記不通区間への進入を禁止するメッセージを出力する制御を実施する、
請求項1又は2の信号制御システム。 - 前記信号制御手段は、
前記カメラで撮影された画像中の異常の内容に基づいて、
青色の灯火の矢印による前記不通区間への交通の流入を抑止する第1の制御、又は
全方向の灯器を、赤色の灯火の点滅に変更、かつ、前記不通区間を禁止するメッセージの出力を行う第2の制御、
のいずれかを実施する、
請求項1から3いずれか一の信号制御システム。 - 前記信号制御手段は、
前記交通信号機と、前記カメラで撮影された画像中の異常と判定した箇所との距離に基づいて、
前記第1の制御又は前記第2の制御のいずれかを実施する、
請求項4の信号制御システム。 - 前記通行可否判定手段は、事前に撮影された道路の基準画像との比較を行うことにより、道路の異常を検出し、前記道路区間の通行可否を判定する、請求項1から5いずれか一の信号制御システム。
- 前記通行可否判定手段は、事前に設定された道路上の車両の動線と、前記画像中の車両の動線との比較を行うことにより、道路の異常を検出し、前記道路区間の通行可否を判定する、
請求項1から6いずれか一の信号制御システム。 - 前記通行可否判定手段は、信号灯火に反する前記画像中の車両の動きの有無に基づいて道路の異常を検出し、前記道路区間の通行可否を判定する、請求項1から7いずれか一の信号制御システム。
- さらに、
前記不通区間の発生を前記制御対象エリアに位置する車両に通知する通知手段を備える請求項1から8いずれか一の信号制御システム。 - 制御対象エリアの道路周辺に配置されたカメラから画像を取得可能なコンピュータが、
前記カメラで撮影された画像中の異常に基づいて、交差点を起点とする道路区間の通行可否を判定し、
不通区間への交通の流入を抑止するよう、前記道路区間を含む交差点の交通信号機を制御する、
信号制御方法。 - 制御対象エリアの道路周辺に配置されたカメラから画像を取得可能なコンピュータに、
前記カメラで撮影された画像中の異常に基づいて、交差点を起点とする道路区間の通行可否を判定する処理と、
不通区間への交通の流入を抑止するよう、前記道路区間を含む交差点の交通信号機を制御する処理と、
を実行させるプログラムを記録したプログラム記録媒体。
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JP2003022493A (ja) * | 2001-07-05 | 2003-01-24 | Ntt Docomo Shikoku Inc | 信号機システム、信号機を用いた情報提供収集方法、信号機を用いた情報提供収集プログラム及びコンピュータ読み取り可能な記録媒体 |
JP2013127663A (ja) * | 2011-12-16 | 2013-06-27 | Sumitomo Electric Ind Ltd | 交通設備、中央装置及び交通システム |
JP2019079189A (ja) * | 2017-10-23 | 2019-05-23 | 株式会社豊田中央研究所 | 情報処理装置、情報処理システム、及びプログラム |
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JP2013127663A (ja) * | 2011-12-16 | 2013-06-27 | Sumitomo Electric Ind Ltd | 交通設備、中央装置及び交通システム |
JP2019079189A (ja) * | 2017-10-23 | 2019-05-23 | 株式会社豊田中央研究所 | 情報処理装置、情報処理システム、及びプログラム |
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