JP6464677B2 - Traffic signal controller and traffic signal control method - Google Patents

Description

  The present invention relates to a traffic signal controller in which a plurality of current display orders indicating a flow path to which a right of traffic at an intersection is given by a green light and a traffic signal control method using the traffic signal controller.

  Usually, in traffic signal control, a lamp color is displayed in accordance with a predetermined display order. Since traffic conditions change from moment to moment, it is necessary to adjust the lamp color display time to an optimum time. For example, a traffic signal control method is disclosed in which the last vehicle of a group of vehicles traveling upstream of an intersection is specified and the green signal time is extended so that the vehicle does not stop at the intersection (Patent Document 1). .

JP-A-8-106596

  In the conventional traffic signal control as in the method of Patent Document 1, the display in the predetermined order is displayed, and the order of the lamp colors to be displayed is always constant. For this reason, even if traffic is possible in a certain direction even if it is possible to pass in a certain order, traffic conditions change from time to time. Can be ensured. However, when displaying indications that differ from the predetermined directions, the signal lamp color display order must be consistent before and after each indication change, i.e., the vehicle traveling direction is consistent. There must be no light color display order.

  The present invention has been made in view of such circumstances, and a traffic signal controller that does not cause a contradiction in the display order of signal light colors even when switching to a display different from a plurality of displays in which the display order is determined in advance. It is another object of the present invention to provide a traffic signal control method using the traffic signal controller.

The traffic signal controller according to the embodiment of the present invention is composed of a plurality of floors of signal light color, and a plurality of presenting display orders indicating a flow path to which a right of traffic at an intersection is given by a green light is predetermined. A traffic signal controller comprising a plurality of floors of signal light color, a storage unit for storing one or a plurality of specific indications to which a right of passage different from each of the plurality of indications is given, and the plurality of the indications A right of traffic including a direction intersecting with the direction of travel of the right of right given by any one of a plurality of specific indications stored in the storage unit. When the display is switched to the specific display to which is given , a display determination unit that determines whether or not the display of the specific display is possible next to the arbitrary display, and the display determination unit determines that the display is possible A switching unit that switches the arbitrary display to the specific display. That.

In the traffic signal control method according to the embodiment of the present invention, a plurality of current display orders are defined in advance, which are composed of a plurality of steps of a signal light color and indicate a flow path to which a right of traffic at an intersection is given by a green light. A traffic signal control method using a traffic signal controller, comprising one or a plurality of specific indications, each of which is composed of a plurality of levels of signal light colors and is given a right of traffic different from each of the plurality of indications. The traveling direction of the right to be given by the arbitrary display of one or more specific displays stored in the storage unit as an arbitrary display being displayed among the plurality of displays. When switching to a specific display with a right of passage including a crossing direction, the display determination unit determines whether or not the specific display can be displayed next to the arbitrary display, and can be displayed. If it is determined that the specific indication is In and a step of switching unit switches.

  According to the present invention, even when switching to a display different from a plurality of displays in which the display order is determined in advance, the display can be switched without causing any contradiction in the display order of the signal lamp colors.

It is a block diagram which shows an example of a structure of the traffic signal controller of this Embodiment. It is a schematic diagram which shows an example of the intersection in which the signal light apparatus controlled by the traffic signal controller of this Embodiment was installed. It is a schematic diagram which shows an example of the some display for which the display order was defined previously. It is a schematic diagram which shows an example of a specific indication. It is explanatory drawing which shows an example of the combination of the signal lamp color which can be displayed continuously in the case of the same advancing direction. It is explanatory drawing which shows an example of the combination of the signal lamp color which can be displayed continuously in the case of the direction which cross | intersects. It is a schematic diagram which shows the 1st example of the display switching by the traffic signal controller of this Embodiment. It is a schematic diagram which shows the 2nd example of the present switching by the traffic signal controller of this Embodiment. It is explanatory drawing which shows an example of the displayable floor. It is explanatory drawing which shows an example of the floor which can be displayed immediately after the present floor. It is a schematic diagram which shows an example of the specific display in which the floor was adjusted. It is a schematic diagram which shows an example of the switch to the specific display when arbitrary displays include the displayable level. It is a flowchart which shows an example of the process sequence of the traffic signal controller of this Embodiment.

[Description of Embodiment of Present Invention]
(1) The traffic signal controller according to the embodiment of the present invention is composed of a plurality of floors of signal light color, and there are a plurality of current display orders indicating a flow path to which a right of traffic at an intersection is given by a green light. A predetermined traffic signal controller, comprising a plurality of floors of signal light color, and storing one or a plurality of specific indications to which a right of passage different from each of the plurality of indications is given; When switching an arbitrary indication being displayed among the plurality of indications to a required specific indication among one or more specific indications stored in the storage unit, the optional indication is followed by the A display determination unit that determines whether or not display of a specific display is possible, and a switching unit that switches the arbitrary display to the specific display when the display determination unit determines that display is possible .

(5) In the traffic signal control method according to the embodiment of the present invention, the display order of a plurality of indications indicating a flow path which is composed of a plurality of steps of a signal light color and is given a right of traffic at an intersection with a green light. A traffic signal control method using a predetermined traffic signal controller, comprising one or a plurality of specific indications, each of which is composed of a plurality of signal light colors and is given a right of traffic different from each of the plurality of indications. Stored in the storage unit, and when the arbitrary display being displayed among the plurality of displays is switched to the required specific display among the one or more specific displays stored in the storage unit, the arbitrary display A step of determining whether the display of the specific display is possible next to the display of the display, and switching the arbitrary display to the specific display when it is determined that the display is possible The section switches.

  The storage unit stores one or a plurality of specific indications that are configured by a plurality of levels of signal lamp colors and that are given different right of traffic from each of the plurality of indications in which the display order is determined in advance. . The floor is a step of signal light color, and the present is a flowchart indicating a flow path to which a right of traffic at an intersection is given by a green light or signal information related to the flowchart. The specific indication is a indication that is not included in a plurality of indications whose display order is determined in advance, and is a indication that is not displayed in normal traffic control.

  When the display determination unit switches an arbitrary display being displayed among a plurality of displays to a required specific display among one or more specific displays stored in the storage unit, the display determination unit It is determined whether or not the specific display can be displayed. Whether or not a specific display can be displayed next to an arbitrary display is displayed, for example, on the signal light color on the floor displayed before switching at the arbitrary display and after switching at the specific display It can be determined by whether or not the signal lamp color on the floor is a consistent combination.

  The switching unit switches an arbitrary display to a specific display when the display determination unit determines that the display is possible. Thereby, even when switching to a different display from a plurality of displays in which the display order is determined in advance, it is determined whether there is a contradiction in the display order of the signal lamp color. Even when switching to a display different from the display, the display can be switched without causing any contradiction in the display order of the signal lamp colors.

(2) The traffic signal controller according to the embodiment of the present invention is based on the storage unit that pre-stores signal lamp color combination information that can be continuously displayed, and the identification based on the information stored in the storage unit. A display level specifying unit that specifies a displayable level that can be displayed immediately before the first level of the display, and the display determination unit includes the displayable level specified by the optional level determination unit. Whether or not display is possible is determined according to the determination result.

  A memory | storage part memorize | stores beforehand the combination information of the signal lamp color which can be displayed continuously. The signal lamp color that can be continuously displayed is a signal lamp color that is switched correctly without any contradiction in the combination of the signal lamp color before switching and the signal lamp color after switching when switching the signal lamp color. For example, if the opposite upstream and downstream signal lamp colors are both blue, and the switched upstream and downstream signal lamp colors are blue and red, respectively, there is a contradiction. When the up and down direction signal lamp colors after switching are blue and yellow, respectively, the signal lamp colors can be displayed continuously without any contradiction.

  The floor specifying unit specifies a displayable floor that can be displayed immediately before the first floor of the specific display based on the information stored in the storage unit. That is, the floor specifying unit specifies a floor that can be displayed continuously without contradiction to the first floor of the specific display. The display determination unit determines whether or not the arbitrary display includes the displayable level specified by the level specifying unit, and determines whether display is possible according to the determination result. When the arbitrary display includes a floor (displayable floor) that can be displayed continuously with the first floor of the specific display, it is possible to switch from the arbitrary display to the specific display. Thereby, it is possible not to perform the switching of the display that cannot maintain the continuity of the signal lamp color, and it is possible to prevent the situation where the continuity of the signal lamp color is lost.

(3) The traffic signal controller according to the embodiment of the present invention includes a floor determination unit that determines whether or not the currently displayed floor and the displayable floor match, and the floor determination. A displayable floor determination unit that determines whether or not the arbitrary display includes the displayable floor after the displayed floor, and the switching unit includes the display When it is determined by the possible floor determination unit that the displayable floor is included, the display is switched to the specific display after the display of the displayable floor is completed.

  The floor determination unit determines whether or not an arbitrary currently displayed floor matches the displayable floor. When it is determined by the floor determination unit that they do not match, it is determined whether or not an arbitrary display includes a displayable floor after the currently displayed floor. When it is determined by the displayable level determination unit that the displayable level includes the displayable level, the switching unit switches to the specific display after the display of the displayable level is completed. That is, when a displayable floor that can maintain the continuity of the first floor of the specific display and the signal light color is included in any display, if the currently displayed floor is a floor before the displayable floor, Instead of switching to the specific display at the currently displayed level, the level is stepped and the displayable level is displayed, and when the display ends, the level is switched to the specific display. As a result, it is possible to switch from a floor in the middle of any display (displayable floor) to a specific display.

(4) In the traffic signal controller according to the embodiment of the present invention, when the level determining unit determines that the arbitrary display does not include the displayable level in the display determining unit, A floor that can be displayed next to any one of the floors after the one on which the display is displayed, the floor that can be displayed immediately before the first floor of the specific display is specified, and An adjustment unit that adjusts the floor of the specific display by attaching the floor specified by the specific unit in front of the first floor of the specific display; and the switching unit converts the arbitrary display to the adjustment unit. The display is switched to the specific display adjusted in.

  When the display determining unit determines that any display does not include a displayable floor, the floor specifying unit is a floor that can be displayed next to any one of the floors after the currently displayed display. Thus, a floor that can be displayed immediately before the first floor of the specific display is specified. The adjustment unit adjusts the floor of the specific display by attaching the floor specified by the floor specifying unit in front of the first floor of the specific display. The switching unit switches an arbitrary display to a specific display adjusted by the adjustment unit.

  Identifies the floor that can maintain the continuity of the signal lamp color between any indication and the specified indication, and identifies it from any indication by making the identified step the first one of the indication Even if the continuity of the signal lamp color cannot be maintained only by switching to the display, it is possible to adjust the lamp color of the specific display to realize the switch to the specific display.

[Details of the embodiment of the present invention]
Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments. FIG. 1 is a block diagram showing an example of the configuration of the traffic signal controller 100 of the present embodiment. The traffic signal controller 100 includes a CPU 10, a communication interface 11 for communicating with a server or a portable information processing apparatus (not shown) via a network, and a sensor interface 12 for receiving vehicle detection information from the vehicle sensor 20. , A timer circuit 13, a step counter 14 for sequentially specifying the signal display of the signal lamp, a display memory 15, a specific display memory 17, a display memory reading circuit 16, an operation unit 18, and the like. The traffic signal controller 100 is connected to signal lamps 201 and 202. The above-described portable information processing apparatus is, for example, a remote operation apparatus separated from the traffic signal controller 100.

  The vehicle detector 20 is installed at a required position of the inflow path that flows into the intersection, and acquires vehicle detection information such as traffic volume (number of vehicles) and occupancy by acquiring a detection pulse signal, and the calculated vehicle The sensing information is transmitted to the sensor interface 12 of the traffic signal controller 100.

  FIG. 2 is a schematic diagram showing an example of an intersection where signal lamps 201 and 202 controlled by the traffic signal controller 100 of the present embodiment are installed. As shown in FIG. 2, a plurality of inflow paths R1, R2, R3, and R4 flow into the intersection. The inflow paths R2 and R4 are inflow paths facing each other, and the signal lamp 201 is provided for the inflow paths R2 and R4. The inflow paths R1 and R3 are inflow paths facing each other, and the inflow paths R1 and R3 In contrast, a signal lamp 202 is provided. For convenience, the inflow path R4 is called up and the inflow path R2 is called down. In addition, the shape of the intersection is not limited to the example of FIG. 2, and may be a three-way road, a five-way road, or the like. Note that FIG. 2 is an example of left-hand traffic, and in the case of right-hand traffic, the lane is reversed left and right.

  The sensor interface 12 acquires vehicle detection information and the like from the vehicle sensor 20. That is, the sensor interface 12 has a function of acquiring the traffic volume on the inflow paths R1 to R4 at intersections, for example.

  The communication interface 11 receives operation command information transmitted from a server (not shown). Further, the communication interface 11 receives a command transmitted by a portable information processing device (not shown). The command transmitted by the portable information processing device is a command for controlling the switching of the display.

  The timer circuit 13 is driven based on a clock signal (not shown), counts a unit time (for example, 1 second) of a signal lamp color step (also called a step) according to the setting, and outputs a unit time signal (for example, a cycle of 1 second). Clock) is output to the step counter 14.

  Based on the operation command information transmitted from a server (not shown), the CPU 10 sends a step command, which is a lamp color switching timing signal of the signal lamps 201 and 202, to the step counter 14. The step command is, for example, a command to advance the signal display to the next signal display (advance the step to the next step).

  Further, the CPU 10 sends a switching signal for switching the display to the step counter 14 based on the traffic volume acquired by the sensor interface 12.

  Further, the CPU 10 sends a switching signal for switching the display to the step counter 14 based on a command transmitted from a portable information processing apparatus (not shown) or a command operated by the operation unit 18.

  The step counter 14 sequentially specifies the steps of the signal lamps 201 and 202 based on the step command sent from the CPU 10. Specifically, the step counter 14 measures a step based on a step command sent from the CPU 10 and generates a step signal. The step counter 14 outputs the generated step signal to the display memory reading circuit 16. Note that counting a step means sequentially stepping to the next step while pointing to the current step.

  Further, the step counter 14 generates a current switching step signal for switching the current display based on the switching signal sent from the CPU 10, and outputs the generated current switching step signal to the current memory reading circuit 16. .

  The display memory 15 stores a plurality of displays whose display order is determined in advance. The display stored in the display memory 15 is used for normal traffic control. In the embodiment, the present indication means a flow chart indicating a flow path to which a right of traffic at an intersection is given by a green light or signal information related to the flow chart.

  The specific indication memory 17 has a function as a storage unit and stores the specific indication. The specific display is a display different from the display stored in the display memory 15 and is a display that is not included in a plurality of displays having a predetermined display order. In normal traffic control, It is not displayed.

  Based on the step signal output from the step counter 14, the display memory reading circuit 16 reads the signal information related to the display stored in the display memory 15 or the specific display memory 17, and based on the read signal information. The lamp color is output to each signal lamp 201, 202.

  The display memory reading circuit 16 switches the signal information reading destination to either the display memory 15 or the specific display memory 17 based on the display switching step signal output from the step counter 14.

  The operation unit 18 has a function of accepting an operation for switching the display.

  Next, operation | movement of the traffic signal controller 100 of this Embodiment is demonstrated. FIG. 3 is a schematic diagram showing an example of a plurality of displays in which a display order is determined in advance. The traffic signal controller 100 normally performs signal control as shown in FIG. 3 based on the present information (signal information related to the present) stored in the present memory 15. As shown in FIG. 3, the traffic signal controller 100 displays the current display 1 and the current display 2 in this order, and after displaying the current display 2, returns to the current display 1 again and repeats the same display.

  The present indication 1 is a present indication that gives right of passage in the straight direction, left turn and right turn directions to the inflow paths R2 and R4 at the intersection illustrated in FIG. 2, and the present indication 2 represents the inflow paths R1 and R3. On the other hand, the right to pass in the straight, left and right turn directions is shown.

  Indications 1 and 2 are each composed of a plurality of floors. The floor means a step of signal light color. As shown in FIG. 3, the current display 1 is configured such that the floor 1 is blue, the floor 2 is yellow, and the floor 3 is red with respect to the R4 direction (right arrow) and the R2 direction (left arrow). To do. Further, in the present indication 2, it is assumed that the floor 1 is blue, the floor 2 is yellow, and the floor 3 is red with respect to the R3 direction (up arrow) and the R1 direction (down arrow).

  Of the indications 1 and 2, any indication can be a variable indication. The variable display is a display that can be switched to a specific display stored in the specific display memory 17 in addition to the display to be displayed next (the display can be made variable). In the example of FIG. 3, for the sake of convenience, the display 1 is assumed to be a variable display, and in the following description, a case where the display 1 is switched to the specific display will be described.

  FIG. 4 is a schematic diagram showing an example of the specific indication. As described above, the specific display is a display (also referred to as a hidden display) that is stored in the specific display memory 17 and is not normally displayed. Each of the present indications 1-1 to 1-4 grants a right of traffic different from the present indications 1 and 2.

  Indication 1-1 is an indication that gives the right of passage in the straight, left and right turn directions to the inflow passage R3, and no right of passage is given to the inflow passage R1 facing the inflow passage R3. It is shown. Indication 1-2 is an indication that gives the right of passage in the straight, left and right turn directions to the inflow passage R4, and no right of passage is given to the inflow passage R2 facing the inflow passage R4. It is shown. Indication 1-3 is an indication that grants the right of passage in the straight, left-turn, and right-turn directions to inflow route R1, and is the indication that no right of passage is granted to inflow passage R3. Indication 1-4 is an indication that grants the right of passage in the straight, left-turn, and right-turn directions to the inflow route R2, and no indication of granting the right of passage to the inflow route R4. Further, the specific indication is not limited to that illustrated in FIG.

  The CPU 10 has a function as a display determination unit, and a specific specification of one or a plurality of specific indications stored in the specific indication memory 17 by storing an arbitrary indication being displayed among the plurality of indications. When switching to display, it is determined whether or not display of a specific display is possible after an arbitrary display. Whether or not a specific display can be displayed next to an arbitrary display is displayed, for example, on the signal light color on the floor displayed before switching at the arbitrary display and after switching at the specific display It can be determined by whether or not the signal lamp color on the floor is a consistent combination. It should be noted that the combination of the signal lamp colors having no contradiction means that the signal lamp colors can be displayed continuously, and that the continuity of the signal lamp colors is maintained.

  Next, combinations of signal lamp colors that can be continuously displayed will be described. FIG. 5 is an explanatory diagram showing an example of combinations of signal lamp colors that can be continuously displayed in the same traveling direction. In FIG. 5, the left column indicates the signal lamp color immediately before the signal lamp color is switched, and indicates the signal lamp colors in the R4 direction (right arrow) and the R2 direction (left arrow). Moreover, the upper column in FIG. 5 shows the signal lamp color immediately after switching the signal lamp color, and shows the signal lamp colors in the R4 direction (right arrow) and the R2 direction (left arrow). The traveling direction refers to a case where the direction immediately before switching and the direction immediately after switching are the same direction. In FIG. 5, a portion indicated by an O mark indicates that the signal lamp color before switching and the signal lamp color after switching maintain continuity, and can be displayed by switching without contradiction. In addition, in FIG. 5, the signal lamp color before switching and the signal lamp color after switching do not maintain continuity, and there is a contradiction, so that it is impossible to switch and display the part where the O mark is not given. Indicates that FIG. 5 shows that the light color of the first floor before the switching (for example, the floor 1 of the first floor in FIGS. 3 and 7) is blue, the R4 direction (right arrow) is blue, and the R2 direction (left arrow). ) Is an example of blue.

  FIG. 6 is an explanatory diagram showing an example of combinations of signal lamp colors that can be continuously displayed in the case of crossing directions. In FIG. 6, the left column shows the signal lamp color immediately before switching the signal lamp color, and shows the signal lamp colors in the R4 direction (right arrow) and the R2 direction (left arrow). Moreover, the upper column in FIG. 6 shows the signal lamp color immediately after switching the signal lamp color, and shows the signal lamp colors in the R3 direction (up arrow) and R1 direction (down arrow). The intersecting direction refers to a case where the direction immediately before switching and the direction immediately after switching intersect.

  In FIG. 6, a portion indicated by an O mark indicates that the signal lamp color before switching and the signal lamp color after switching maintain continuity, and indicates that it is possible to switch and display without contradiction. In addition, in FIG. 6, in the portion where the O mark is not given, the signal lamp color before switching and the signal lamp color after switching do not maintain continuity, and there is a contradiction, so that switching cannot be displayed. Indicates that

  The combination information of signal lamp colors that can be continuously displayed as shown in FIGS. 5 and 6 may be stored in the display memory 15, or may be stored in a ROM (not shown) or the like. As described above, the signal lamp color that can be displayed continuously is the signal lamp color that is correctly switched when there is no contradiction in the combination of the signal lamp color before switching and the signal lamp color after switching when switching the signal lamp color. is there.

  For example, as shown in FIG. 5, when the signal lamp colors in the opposite R4 and R2 directions are both blue, and the signal lamp colors in the R4 and R2 directions after switching are blue and red, respectively, the O mark Is not given, so this is a combination that causes a contradiction. On the other hand, when the signal lamp colors in the R4 and R2 directions after switching are blue and yellow, respectively, the O mark is given, and the signal lamp colors that can be continuously displayed without any contradiction are given.

  When the CPU 10 determines that the specific display can be displayed next to the arbitrary display, the CPU 10 sends a switching signal for switching the arbitrary display to the specific display to the step counter 14. In this case, the step counter 14 outputs a display switching step signal for switching the display to the display memory reading circuit 16.

  The display memory reading circuit 16 has a function as a switching unit, and switches an arbitrary display to a specific display. Thereby, even when switching to a different display from a plurality of displays in which the display order is determined in advance, it is determined whether there is a contradiction in the display order of the signal lamp color. Even when switching to a display different from the display, the display can be switched without causing any contradiction in the display order of the signal lamp colors.

  Next, a method for determining whether or not a specific display can be displayed after an arbitrary display will be described. The CPU 10 has a function as a floor specifying unit, and is displayed immediately before the first floor of the specific display based on the combination information of signal lamp colors that can be continuously displayed as illustrated in FIGS. 5 and 6. Specify a displayable floor that can be used. In other words, the CPU 10 specifies a floor that can be displayed continuously without contradiction to the first floor of the specific display.

  Then, the CPU 10 determines whether or not any display includes the specified displayable level, and determines whether or not display is possible according to the determination result. When the arbitrary display includes a floor (displayable floor) that can be displayed continuously with the first floor of the specific display, it is possible to switch from the arbitrary display to the specific display. Thereby, it is possible not to perform the switching of the display that cannot maintain the continuity of the signal lamp color, and it is possible to prevent the situation where the continuity of the signal lamp color is lost. Hereinafter, a description will be given based on a specific example.

  FIG. 7 is a schematic diagram showing a first example of current switching by the traffic signal controller 100 of the present embodiment. In the first example shown in FIG. 7, in traffic signal control in which the current display 1 and the current display 2 are alternately displayed repeatedly, the display of the specific display 1-1 is switched from the current display 1 to the specific display 1-1. The case where it switches to the following present 2 after completion | finish is shown. The signal light colors of the floor of the current display 1 are assumed that the floor 1 is blue, the floor 2 is yellow, and the floor 3 is red in both the R4 direction (right arrow) and the R2 direction (left arrow). In addition, the signal light color of the floor of the specific indication 1-1 is assumed that the floor 1 is blue, the floor 2 is yellow, the floor 3 is red, and the R1 direction (down arrow) is R3 direction (up arrow). The floors 1, 2, and 3 are all red.

  In the first example, the floor 3 of the current indication 1 is red in both directions of R2 and R4, so as shown in FIG. 6, there is a contradiction with the signal lamp color of the first floor 1 of the specific indication 1-1. Rather, the floor 3 of the current display 1 and the floor 1 of the specific display 1-1 maintain continuity and can be displayed continuously.

  FIG. 8 is a schematic diagram illustrating a second example of current switching by the traffic signal controller 100 of the present embodiment. The second example shown in FIG. 8 shows a case where the floor 3 of the current display 1 is switched to the floor 1 of the specific current 1-2. The signal light colors of the floor of the current display 1 are assumed that the floor 1 is blue, the floor 2 is yellow, and the floor 3 is red in both the R4 direction (right arrow) and the R2 direction (left arrow). The signal lamp color of the floor 1 of the specific indication 1-2 is blue in the R4 direction (right arrow) and red in the R2 direction (left arrow).

  FIG. 9 is an explanatory diagram showing an example of a displayable level. FIG. 9 shows the signal lamp color of the first floor, which is the first floor of the specific indication 1-2, and shows the floor that can be displayed immediately before the floor 1 of the specific indication 1-2. Assuming that the floor 1 of the specific indication 1-2 is the signal lamp color immediately after switching, the signal lamp colors that can be displayed continuously are blue in the R4 direction (right arrow) and the R2 direction (left arrow) as shown in FIG. ) Is yellow. That is, since the displayable level that can be displayed immediately before the level 1 of the specific indication 1-2 is different from the signal light color of the level 3 of the indication 1, the level 3 of the indication 1 and the level of the specific indication 1-2 are displayed. It turns out that continuous display is impossible with 1.

  In addition, the signal lamp color that can be displayed continuously with the floor 1 of the specific indication 1-2, the floor in which the R4 direction (right arrow) is blue and the R2 direction (left arrow) is yellow is the color of the indication 1 You can see that it is not included in the floor. In this case, the current display 1 cannot be simply switched to the specific display 1-2, that is, the current display 1-2 cannot be called. In the case of FIG. 8, when viewed from the driver of the vehicle traveling in the R4 direction (right arrow), immediately after the yellow signal turns into a red signal on the floor 3 of the current display 1, the floor of the current display 1-2. Since a green signal is generated at 1, the color of the signal lamp is changed to cause a trouble for the driver. Therefore, the level of the specific display is adjusted as described below.

  If the CPU 10 determines that any display (display 1 in FIG. 8) does not include a displayable floor that can be displayed continuously with the floor 1 of the specific display 1-2, A floor that can be displayed next to any one of the floors after the currently displayed one and that can be displayed immediately before the first floor of the specific display is specified.

  FIG. 10 is an explanatory diagram showing an example of a floor that can be displayed immediately after the current floor. As shown in FIG. 10, the floor 1 of the current display 1 is blue in both the R4 direction (right arrow) and the R2 direction (left arrow), and the floor that can be displayed immediately after the floor 1 of the current display 1 is FIG. 5 shows the floors a, b and c. In the floor a, the R4 direction (right arrow) is blue, and the R2 direction (left arrow) is yellow. In the floor b, the R4 direction (right arrow) is yellow, and the R2 direction (left arrow) is blue. In the floor c, the R4 direction (right arrow) is yellow, and the R2 direction (left arrow) is yellow.

  Further, the floors that can be displayed immediately after the floor 2 of the present display 1 are the floors d, e, and f from FIG. In the floor d, the R4 direction (right arrow) is yellow, and the R2 direction (left arrow) is red. The floor e is red in the R4 direction (right arrow) and yellow in the R2 direction (left arrow). In the floor f, the R4 direction (right arrow) is red, and the R2 direction (left arrow) is red.

  Of the floors a to f, the floor that can be displayed continuously with the floor 1 of the specific display 1-2 is the floor a, and the floors b to f are the floor 1 of the specific display 1-2. Cannot display continuously. Therefore, by adding a level a to the first level 1 of the specific indication 1-2, it is possible to display continuously while maintaining the continuity between the indication 1 and the specific indication 1-2. It becomes.

  FIG. 11 is a schematic diagram illustrating an example of the specific indication 1-2 in which the floor is adjusted. As shown in FIG. 11, by adding a level a before the first level 1 of the specific indication 1-2, the continuity between the indication 1 and the specific indication 1-2 is maintained continuously. It is possible to display.

  As described above, the CPU 10 has a function as an adjustment unit, and adjusts the specific display ladder by attaching the specified floor (the floor a in the example of FIG. 10) in front of the first floor of the specific display. To do. Also in this case, the display memory reading circuit 16 switches an arbitrary display to a specific display adjusted by the CPU 10.

  Identifies the floor that can maintain the continuity of the signal lamp color between any indication and the specified indication, and identifies it from any indication by making the identified step the first one of the indication Even if the continuity of the signal lamp color cannot be maintained only by switching to the display, it is possible to adjust the lamp color of the specific display to realize the switch to the specific display.

  FIG. 12 is a schematic diagram showing an example of switching to a specific display when an arbitrary display includes a displayable level. In FIG. 12, the current display is a display in which a display order is determined in advance. In the current display, the floor being displayed is the floor 2, and the displayable floor capable of continuous display with the first floor of the specific display is the floor 4. In the current display, when the display time determined for each floor elapses, the process proceeds to the next floor.

  The CPU 10 determines whether or not the currently displayed floor (the floor 1 in the example of FIG. 12) matches the displayable floor (the floor 4 in the example of FIG. 12). As shown in FIG. 12, when it is determined that the currently displayed floor and the displayable floor do not match, the CPU 10 has a function as a displayable floor determination unit, and the arbitrary display It is determined whether or not a displayable floor is included after the currently displayed floor (floor 1). In the example of FIG. 12, there is a displayable floor (the floor 4) after the floor 1.

  When the CPU 10 determines that the display includes a displayable level after the currently displayed level (the level 1), the display memory reading circuit 16 controls the specific display after the display of the displayable level is completed under the control of the CPU 10. Switch to. In the example of FIG. 12, the process proceeds to the levels 2, 3, and 4, and the display is switched to the specific display when the display time of the level 4 ends.

  That is, when a displayable floor that can maintain the continuity of the first floor of the specific display and the signal light color is included in any display, if the currently displayed floor is a floor before the displayable floor, Instead of switching to the specific display at the currently displayed level, the level is stepped and the displayable level is displayed, and when the display ends, the level is switched to the specific display. As a result, it is possible to switch from a floor in the middle of any display (displayable floor) to a specific display.

  FIG. 13 is a flowchart illustrating an example of a processing procedure of the traffic signal controller 100 according to the present embodiment. In the following description, the processing subject is referred to as CPU 10 for convenience. The CPU 10 determines whether or not there is a current call (S11). The presence / absence of the current call is, for example, the presence / absence of a trigger for switching from the current display being displayed to the next display, or a trigger for switching from the current display being displayed to the specific display. Examples of the trigger for switching from the current display to the specific display include, for example, increase / decrease in traffic on the inflow path based on the result detected by the vehicle detector 20, presence / absence of a passing vehicle, or current on the operation unit 18. For example, a display switching operation, a display switching command from the portable information processing apparatus, and the like.

  If there is no current call (NO in S11), the CPU 10 continues the process of step S11. When there is a call for present (YES in S11), the CPU 10 determines whether or not the present of the call destination is correct (S12).

  If the callee display is the correct display (YES in S12), that is, if the callee display is the display in the display order next to the caller display, or the callee display is specified If it is a current display, the CPU 10 identifies a floor (displayable floor) that can be displayed immediately before the current floor of the call destination (S13), and the identified floor (displayable floor) indicates the caller's display. (S14).

  When the specified level (displayable level) is included in the caller's display (YES in S14), the CPU 10 determines whether or not the currently displayed level is a level before the specified level (S15). If the currently displayed floor is a floor before the specified floor (YES in S15), the floor is advanced, and the call destination display is called at the end of the specified floor (S16), and the process is terminated.

  If the callee's display is not correct (NO in S12), the specified floor (displayable floor) is not included in the caller's display (NO in S14), or the currently displayed floor is specified If it is not the previous level (NO in S15), the CPU 10 ends the process. In this case, an unintended display is prevented from being called, and a fail-safe function is realized.

  In normal times, even if the indications are displayed in order in a predetermined display order, there is a need to call a specific indication that is not normally displayed and change the direction in which the vehicle can pass when traffic jams occur. Arise. In such a case, for example, even when the police officer switches the display manually, according to the present embodiment, the continuity of the signal lamp color is maintained before and after the switching of each display, and there is no contradiction. The color can be displayed.

  In addition, when switching the display, there is no restriction that the callee's display must be called from the last caller's call, and if the caller's display has a displayable floor, The call destination display can be called at the end of the displayable level.

  In addition, even if the caller's display does not include a displayable level, the display can be switched by providing a continuous displayable level before the first level of the callee's display. it can.

  As described above, according to the present embodiment, it is possible to switch to the specific display even in the middle of the display, and the continuity of the signal lamp color is maintained from all red, which could not be realized in the past. It is possible to switch while maintaining the continuity even for the display which is not. Further, by disabling the calling of the current indication that the continuity of the signal lamp color cannot be maintained, the continuity of the signal lamp color is not lost by manual operation or the like.

  The disclosed embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

10 CPU
DESCRIPTION OF SYMBOLS 11 Communication interface 12 Sensor interface 13 Timer circuit 14 Step counter 15 Present memory 16 Present memory reading circuit 17 Specific present memory 18 Operation part 20 Vehicle detector 100 Traffic signal controller 201, 202 Signal lamp

Claims (5)

It is a traffic signal controller that is composed of a plurality of floors of signal light color, and that has a predetermined display order of a plurality of indications indicating a flow path that is given a right of traffic at an intersection with a green light,
A storage unit configured by a plurality of floors of signal light colors, storing one or a plurality of specific indications to which a right of passage different from each of the plurality of indications is given;
A direction intersecting with the traveling direction of the right of traffic given by the arbitrary indication of one or more specific indications stored in the storage unit as an arbitrary indication being displayed among the plurality of indications. A display determination unit that determines whether or not display of the specific indication is possible next to the arbitrary indication when switching to the specific indication to which the right to include is provided;
A traffic signal controller comprising: a switching unit that switches the arbitrary display to the specific display when the display determination unit determines that display is possible. A storage unit that pre-stores signal lamp color combination information that can be continuously displayed;
A floor specifying unit that specifies a displayable floor that can be displayed immediately before the first floor of the specific display based on information stored in the storage unit, and
The display determination unit
The determination according to claim 1, wherein it is determined whether or not the arbitrary display includes a displayable level specified by the level specifying unit, and whether or not display is possible is determined according to a determination result. Traffic signal controller. A floor determination unit for determining whether or not the displayable floor of the arbitrary display matches the displayable floor;
A displayable floor determination unit that determines whether or not the arbitrary display includes the displayable floor after the currently displayed floor when the floor determination unit determines that they do not match;
The switching unit is
3. The traffic signal controller according to claim 2, wherein when the displayable floor determination unit determines that the displayable floor is included, the traffic signal controller is configured to switch to the specific display after the display of the displayable floor is completed. The floor identification part is
When the display determination unit determines that the arbitrary display does not include the displayable floor, the display is a floor that can be displayed next to any one of the floors after the currently displayed floor. , A platform that can be displayed immediately before the first platform of the specific display is identified,
An adjustment unit for adjusting the level of the specific indication by attaching the level specified by the level specifying unit in front of the first level of the specific indication;
The switching unit is
The traffic signal controller according to claim 2, wherein the arbitrary display is switched to a specific display adjusted by the adjustment unit. A traffic signal control method by a traffic signal controller, which is composed of a plurality of floors of signal light color and indicates a plurality of display orders indicating a flow path to which a right of traffic at an intersection is given by a green light,
One or a plurality of specific indications that are composed of a plurality of floors of signal lamp color and are given different right of traffic from each of the plurality of indications are stored in the storage unit,
A direction intersecting with the traveling direction of the right of traffic given by the arbitrary indication of one or more specific indications stored in the storage unit as an arbitrary indication being displayed among the plurality of indications. When switching to a specific indication to which a right of passage is included , the display determining unit determines whether the specific indication can be displayed next to the arbitrary indication; and
A traffic signal control method comprising: a step of switching the arbitrary display to the specific display when it is determined that the display is possible.

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