JP5603027B2 - Traffic signal control system - Google Patents

Description

  The present invention relates to a traffic signal control system, and more particularly to a traffic signal control system capable of individually controlling uplink and downlink signal control.

  In general, in the current control of road traffic signals in Japan, a step control method is adopted in which a signal lamp is switched for each step based on a step signal output at a predetermined pitch from a step signal generator. This step control method can be said to be a very excellent method in terms of safety since the change of the step signal is performed serially in units of steps.

  However, in the conventional step control method, there is only one type of step counter that counts the number of seconds of each step, and there is a problem that uplink and downlink cannot be controlled separately.

  For this reason, a signal control circuit has been provided with a plurality of step counters so that upstream and downstream signal control can be performed independently, enabling real-time signal control according to the traffic situation of each inflow path at the intersection. A technique is disclosed (for example, see Patent Document 1).

  In such a traffic signal control system, conventionally, a master signal control device for controlling a signal lamp installed at an intersection is provided, and signal lights at other intersections located upstream and downstream of the intersection are provided. The slave unit signal control device that controls the unit is provided, and the interlock signal is output from the master unit signal control unit to the slave unit signal control unit. Control is done to do.

JP 2006-268547 A

  However, the conventional technique has a problem that only one interlocking signal can be output when the interlocking signal is output from the parent device signal control device to the slave device signal control device. For this reason, it is possible to simultaneously link signal lamps located upstream or downstream with respect to a certain intersection, but they cannot be linked at different timings depending on the flow of the vehicle. There is a problem that there is a risk of stopping.

  The present invention has been made in view of the above points, and can output interlocking signals at different timings from a parent device signal control device to a plurality of child device signal control devices, and can be appropriately adapted to the flow of the vehicle. It is an object of the present invention to provide a traffic signal control system capable of controlling signal lamps in conjunction with each other at appropriate timing.

In order to achieve the above object, the traffic signal control system according to the first aspect of the present invention includes a master signal control device that switches the operation of a signal lamp installed at an intersection for each step, and a vehicle at the intersection. A slave unit signal control device that switches the operation of the signal lamp installed on the upstream and downstream sides of the traveling direction for each step,
The base unit signal control device controls only the signal lamps in the direction with a large amount of traffic among the directions corresponding to the upstream and downstream sides to blue, and the slave unit signal control unit on the downstream side in the direction with a large amount of traffic is The signal lamp device is set in blue and stands by, and when the interlock signal is output from the master signal control device, the signal lamp device is controlled in red.

According to a second aspect of the present invention, in the first aspect, the slave unit signal control device switches and controls the operation of the signal lamp unit by synchronizing the steps in accordance with the interlocking signal. To do .

According to the first aspect of the present invention, only the signal lamp in the direction with the high traffic volume among the directions corresponding to the upstream and downstream sides is controlled to blue by the master signal control device , and the downstream side in the direction with the high traffic volume. The cordless handset signal control device waits with the signal lamp set in blue, and when the interlock signal is output from the master set signal control device, the signal lamp device is controlled in red. In a state in which the vehicle traveling in a direction with a large amount of traffic is controlled in blue by the machine signal control device, the child signal is controlled at blue by the slave device signal control device and red by the master device signal control device. The machine signal control device can also be controlled in red, the signal lamp can be controlled at an appropriate timing according to the flow of the vehicle, and a smooth flow of the vehicle can be achieved.

According to the invention of claim 2,
Since the slave unit signal control device synchronizes the steps in accordance with the interlocking signal and controls the operation of the signal lamp device, the slave unit signal control device can perform interlocking control and respond to the flow of the vehicle. The signal lamp can be controlled at an appropriate timing, and the vehicle can flow smoothly.

It is the schematic which shows embodiment of the traffic signal control system which concerns on this invention. It is a block diagram showing an embodiment of a traffic signal control system according to the present invention. It is the present | indicated hierarchy which shows operation | movement by the main | base station signal control apparatus in embodiment of the traffic signal control system which concerns on this invention. It is a present | indicated hierarchy which shows operation | movement by the subunit | mobile_unit signal control apparatus in embodiment of the traffic signal control system which concerns on this invention. It is explanatory drawing which shows the interlocking | linkage operation | movement of the main | base station signal control apparatus and the subunit | mobile_unit signal control apparatus in embodiment of the traffic signal control system which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic diagram showing an embodiment of a traffic signal control system according to the present invention. For convenience of explanation, at this intersection, the direction of traveling from the bottom to the top of FIG. 1 is the 1V direction, the direction of traveling from the top to the bottom is the 2V direction, from left to right, and from right to left. The direction of traveling toward is 3V direction.

  As shown in FIG. 1, at an intersection 1, a 1V direction vehicle traffic light 3 for a 1V direction vehicle 2 traveling in a 1V direction, a 2V direction vehicle traffic light 5 for a 2V direction vehicle 4 traveling in a 2V direction, and a 3V direction traveling. 3V direction vehicle traffic lights 8 for the 3V direction vehicles 6 and 7 are respectively installed. The 2V direction vehicle traffic light 5 is provided with an arrow direction traffic signal 9 that enables the vehicle to go straight, turn left, or turn right. The intersection 1 is also provided with a 1V / 2V pedestrian traffic light 10 for pedestrians in the 1V direction and 2V direction, and a 3V pedestrian traffic light 11 for pedestrians in the 3V direction.

  Further, a downstream 1V / 2V direction traffic signal 13 and a downstream 3V direction traffic signal 14 are installed at the 1V downstream intersection 12 on the downstream side in the 1V direction, and the 1V upstream side in the upstream direction in the 1V direction. At the intersection 15, an upstream 1V / 2V direction traffic signal 16 and an upstream 3V direction traffic signal 17 are installed. These 1V downstream intersection 12 and 1V upstream intersection 15 include a downstream 1V / 2V direction pedestrian traffic light 18 and an upstream 1V / 2V direction pedestrian traffic light 19 for a 1V direction and 2V direction pedestrian, and 3V. A downstream 3V direction pedestrian traffic light 20 and an upstream 3V direction pedestrian traffic light 21 for a direction pedestrian are provided.

  In the following description, the 1V / 2V direction pedestrian traffic light 10 at the intersection 1 is 1P, the 1V direction vehicle traffic signal 3 is 1V, the 2V direction vehicle traffic light 5 is 2V, and the vehicle straight / left / right turn possible traffic signal. 9 is represented by 2A, 3V direction pedestrian traffic light 11 by 3P, and 3V direction vehicle traffic light 8 by 3V, respectively. Further, the downstream 1V / 2V direction pedestrian traffic light 18 and the upstream 1V / 2V direction pedestrian traffic light 19 at the 1V downstream side intersection 12 and the 1V upstream side intersection 15 are 1P, and the downstream side 1V / 2V direction traffic signal 13 is provided. 1V for the upstream 1V / 2V direction vehicle signal 16, 2P for the downstream 3V direction pedestrian signal 20 and 2P for the upstream 3V direction pedestrian traffic light 21, the downstream 3V direction vehicle signal 14 and the upstream 3V direction vehicle. The traffic signal 17 is represented by 2V.

  Moreover, in this embodiment, as shown in FIG. 2, the 1V direction vehicle signal 3, the 2V direction vehicle signal 5, the 3V direction vehicle signal 8, the arrow direction signal 9, 1V / 2V direction pedestrian at the intersection 1 A master signal control device 22 for controlling the traffic signal 10 and the 3V direction pedestrian traffic light 11 is provided. The master signal control device 22 has a step signal for switching the operation of the signal lamp every step. The master unit control unit 23 as a control means for generating the master unit, the master unit signal control circuit 24 for switching the operation of the signal lamp unit based on the step signal generated by the master unit control unit 23, and the lamp color for lighting the signal lamp unit A display memory 25 for storing data corresponding to the step signal is provided.

  Furthermore, in the present embodiment, the downstream 1V / 2V direction vehicle traffic light 13, the downstream 3V direction vehicle traffic signal 14, the downstream 1V / 2V direction pedestrian traffic light 18 and the downstream 3V direction of the 1V downstream intersection 12 are provided. A 1V downstream signal control device 26 that controls the pedestrian traffic light 20 is provided. The 1V downstream signal control device 26 is provided with a 1V downstream control unit 27 and a 1V downstream signal control circuit 28. ing.

  In addition, an upstream 1V / 2V direction traffic signal 16 at the 1V upstream intersection 15, an upstream 3V direction traffic signal 17, an upstream 1V / 2V direction pedestrian traffic light 19, and an upstream 3V direction pedestrian traffic light 21 A 1V upstream side signal control device 29 that performs control is provided, and the 1V upstream side signal control device 29 is provided with a 1V upstream side control unit 30 and a 1V upstream side signal control circuit 31. The 1V downstream control unit 27 and the 1V upstream control unit 30 have the same configuration as the above-described base unit control unit 23, and the 1V downstream signal control circuit 28 and the 1V upstream signal control circuit 31 are configured as described above. Since the configuration is similar to that of the parent device signal control circuit 24, the description thereof is omitted.

  Further, in the present embodiment, the base unit control unit 23 outputs an interlock signal for switching steps to the 1V downstream side control unit 27 and the 1V upstream side control unit 30 according to the output of a predetermined step signal. Is configured to do. That is, the interlock signal for the 1V downstream control unit 27 and the 1V upstream control unit 30 is appropriately set according to the flow of the vehicle from the intersection 1 to the 1V downstream intersection 12 or the 1V upstream intersection 15. In this embodiment, the amount of traffic of a vehicle traveling in the 2V direction is relatively large, and an arrow direction signal 9 is provided in the 2V direction vehicle traffic light at the intersection 1 so that the vehicle traveling in the 1V direction stops in the 2V direction. In this case, the 1V downstream control unit 27 changes the interlock signal from the A signal to the B signal in FIG. 3 when switching from step 1 to step 2. It is configured to output by switching to a signal. Further, the 1V upstream side control unit 30 is configured to switch the interlock signal from the A signal to the B signal and output in FIG. 3 when switching from step 5 to step 6.

  FIG. 3 is a current floor plan showing the operation at the intersection 1 in the signal control system of the present invention. In FIG. 3, the horizontal axis indicates the number of steps, and the vertical axis indicates each signal name. A thick black line indicates that the traffic light is blue, a wavy line indicates that the traffic light is yellow, an arrow indicates that the signal can travel in the direction of the arrow, and a double line indicates that the traffic light is red. The vertical line indicates blinking.

  First, in step 1, the 1V / 2V pedestrian traffic light 10 is blue, the 1V directional traffic light 3 is blue, the 2V directional traffic light 5 is blue, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light. 11 is red, and the 3V direction vehicle traffic light 8 is controlled to red. Therefore, 1V direction and 2V direction pedestrians can cross, and 1V direction vehicle 2 and 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in Step 2, the 1V / 2V direction pedestrian traffic light 10 blinks, the 1V direction vehicle traffic signal 3 is blue, the 2V direction vehicle traffic signal 5 is blue, the arrow direction signal 9 is unlit, and the 3V direction pedestrian is used. The traffic light 11 is controlled to be red, and the 3V direction vehicle traffic light 8 is controlled to be red. Therefore, 1V direction and 2V direction pedestrians can cross with caution, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in Step 3, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is blue, the 2V directional vehicle traffic light 5 is blue, the arrow direction traffic light 9 is unlit, and the 3V direction pedestrian is used. The traffic light 11 is controlled to be red, and the 3V direction vehicle traffic light 8 is controlled to be red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in Step 4, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is yellow, the 2V directional vehicle traffic light 5 is yellow, the arrow direction traffic light 9 is unlit, and the 3V pedestrian signal is used. The traffic light 11 is controlled to be red, and the 3V direction vehicle traffic light 8 is controlled to be red. Therefore, the 1V direction and 2V direction pedestrians stop, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right with care. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in step 5, the 1V / 2V direction pedestrian traffic light 10 is red, the 1V direction vehicle traffic signal 3 is red, the 2V direction vehicle traffic signal 5 is red, the arrow direction signal 9 is blue, and the 3V direction pedestrian traffic light. 11 is red, and the 3V direction vehicle traffic light 8 is controlled to red. Therefore, the 1V direction and 2V direction pedestrians stop, the 1V direction vehicle 2 stops, and the 2V direction vehicle 4 can go straight, turn left, or turn right. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in step 6, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional traffic light 3 is red, the 2V directional traffic light 5 is yellow, the arrow direction traffic light 9 is unlit, and the 3V pedestrian is used. The traffic light 11 is controlled to be red, and the 3V direction vehicle traffic light 8 is controlled to be red. Therefore, the 1V direction and 2V direction pedestrians are stopped, the 1V direction vehicle 2 is stopped, and the 2V direction vehicle 4 can go straight, turn left, and turn with care. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in step 7, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 is controlled to red, and the 3V direction vehicle traffic light 8 is controlled to red and all red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. The 3V direction pedestrian is stopped by the 3V direction pedestrian traffic light 11, and the 3V direction vehicles 6 and 7 are stopped by the 3V direction pedestrian traffic light 8.

  Next, in Step 8, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 is controlled to be blue, and the 3V direction vehicle traffic light 8 is controlled to be blue. Accordingly, the 1V direction and 2V direction pedestrians are stopped by the 1V / 2V direction pedestrian traffic light 10, and the 1V direction vehicle 2 and the 2V direction vehicle 4 are stopped by the 1V direction vehicle signal 3 and the 2V direction vehicle signal 5. It becomes. 3V direction pedestrians can cross, and the 3V direction vehicles 6 and 7 can go straight, turn left, and turn right by the 3V direction vehicle traffic light 8.

  Next, in Step 9, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 blinks and the 3V direction vehicle traffic light 8 is controlled to be blue. Accordingly, the 1V direction and 2V direction pedestrians are stopped by the 1V / 2V direction pedestrian traffic light 10, and the 1V direction vehicle 2 and the 2V direction vehicle 4 are stopped by the 1V direction vehicle signal 3 and the 2V direction vehicle signal 5. It becomes. 3V direction pedestrians can cross with caution, and 3V direction vehicles 6 and 7 can go straight, turn left, or turn right by 3V direction vehicle traffic light 8.

  Next, in step 10, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 is controlled to red, and the 3V direction vehicle traffic light 8 is controlled to blue. Accordingly, the 1V direction and 2V direction pedestrians are stopped by the 1V / 2V direction pedestrian traffic light 10, and the 1V direction vehicle 2 and the 2V direction vehicle 4 are stopped by the 1V direction vehicle signal 3 and the 2V direction vehicle signal 5. It becomes. In addition, the 3V direction pedestrian stops and the 3V direction vehicles 6 and 7 can go straight, turn left or turn right by the 3V direction vehicle traffic light 8.

  Next, in step 11, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 is controlled to red, and the 3V direction vehicle traffic light 8 is controlled to yellow. Accordingly, the 1V direction and 2V direction pedestrians are stopped by the 1V / 2V direction pedestrian traffic light 10, and the 1V direction vehicle 2 and the 2V direction vehicle 4 are stopped by the 1V direction vehicle signal 3 and the 2V direction vehicle signal 5. It becomes. In addition, the 3V direction pedestrian is stopped, and the 3V direction vehicles 6 and 7 can go straight, turn left, and turn right while paying attention to the traffic signal 8 for the 3V direction vehicle.

  Next, in step 12, the 1V / 2V pedestrian traffic light 10 is red, the 1V directional vehicle traffic light 3 is red, the 2V directional vehicle traffic light 5 is red, the arrow direction traffic light 9 is unlit, and the 3V pedestrian traffic light is used. The traffic light 11 is controlled to red, and the 3V direction vehicle traffic light 8 is controlled to red and all red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. In addition, the 3V direction pedestrian is stopped by the 3V direction vehicle traffic light 8 and the 3V direction vehicles 6 and 7 are stopped by the 3V direction vehicle traffic light 8.

  Next, the signal control operation at the 1V downstream intersection 12 will be described with reference to the floor plan shown in FIG. Since the signal control operation at the 1V upstream side intersection 15 is the same, the description thereof is omitted.

  First, in Step 1, the downstream 1V / 2V direction pedestrian traffic light 18 is blue, the downstream 1V / 2V direction traffic signal 13 is blue, the downstream 3V direction pedestrian traffic light 20 is red, and the downstream 3V direction vehicle. The traffic light 14 is controlled to be red. Therefore, 1V direction and 2V direction pedestrians can cross, and 1V direction vehicle 2 and 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. Further, the 3V direction pedestrian is stopped by the downstream 3V direction pedestrian traffic light 20, and the 3V direction vehicles 6 and 7 are stopped by the downstream side 3V direction pedestrian traffic light 14.

  Next, in Step 2, the downstream 1V / 2V direction pedestrian traffic light 18 blinks, the downstream 1V / 2V direction traffic signal 13 is blue, the downstream 3V direction pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic light 14 is controlled to be red. Therefore, 1V direction and 2V direction pedestrians can cross with caution, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. Further, the 3V direction pedestrian is stopped by the downstream 3V direction pedestrian traffic light 20, and the 3V direction vehicles 6 and 7 are stopped by the downstream side 3V direction pedestrian traffic light 14.

  Next, in step 3, the downstream 1V / 2V pedestrian traffic light 18 is red, the downstream 1V / 2V directional traffic signal 13 is blue, the downstream 3V pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic light 14 is controlled to be red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. Further, the 3V direction pedestrian is stopped by the downstream 3V direction pedestrian traffic light 20, and the 3V direction vehicles 6 and 7 are stopped by the downstream side 3V direction pedestrian traffic light 14.

  Next, in step 4, the downstream 1V / 2V pedestrian traffic light 18 is red, the downstream 1V / 2V directional traffic light 13 is blue, the downstream 3V pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic light 14 is controlled to be red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right, respectively. Further, the 3V direction pedestrian is stopped by the downstream 3V direction pedestrian traffic light 20, and the 3V direction vehicles 6 and 7 are stopped by the downstream side 3V direction pedestrian traffic light 14.

  Next, in Step 5, the downstream 1V / 2V direction pedestrian traffic light 18 is red, the downstream 1V / 2V direction traffic signal 13 is yellow, the downstream 3V direction pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic light 14 is controlled to be red and all red. Therefore, the 1V direction and 2V direction pedestrians stop, and the 1V direction vehicle 2 and the 2V direction vehicle 4 can go straight, turn left, and turn right with care. Further, the 3V direction pedestrian is stopped by the downstream 3V direction pedestrian traffic light 20, and the 3V direction vehicles 6 and 7 are stopped by the downstream side 3V direction pedestrian traffic light 14.

  Next, in Step 6, the downstream 1V / 2V pedestrian traffic light 18 is red, the downstream 1V / 2V directional traffic light 13 is red, the downstream 3V pedestrian traffic light 20 is blue, and the downstream 3V direction. The vehicle traffic signal 14 is controlled to be blue. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. In addition, 3V direction pedestrians can cross, and 3V direction vehicles 6 and 7 can go straight, turn right, and turn left.

  Next, in Step 7, the downstream 1V / 2V pedestrian traffic light 18 is red, the downstream 1V / 2V directional traffic signal 13 is red, the downstream 3V pedestrian traffic light 20 flashes, and the downstream 3V direction The vehicle traffic signal 14 is controlled to be blue. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. 3V direction pedestrians can cross the road with caution, and 3V direction vehicles 6 and 7 can go straight, turn right or turn left.

  Next, in Step 8, the downstream 1V / 2V direction pedestrian traffic light 18 is red, the downstream 1V / 2V direction traffic signal 13 is red, the downstream 3V direction pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic signal 14 is controlled to be blue. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. The 3V direction pedestrian stops and the 3V direction vehicles 6 and 7 can go straight, turn right or turn left.

  Next, in Step 9, the downstream 1V / 2V direction pedestrian traffic light 18 is red, the downstream 1V / 2V direction traffic signal 13 is red, the downstream 3V direction pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic signal 14 is controlled to yellow. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. Also, the 3V direction pedestrian stops and the 3V direction vehicles 6 and 7 can go straight, turn right or turn with care.

  Next, in Step 10, the downstream 1V / 2V pedestrian traffic light 18 is red, the downstream 1V / 2V directional traffic light 13 is red, the downstream 3V pedestrian traffic light 20 is red, and the downstream 3V direction. The vehicle traffic light 14 is controlled to be red and all red. Therefore, the 1V direction and 2V direction pedestrians are stopped, and the 1V direction vehicle 2 and the 2V direction vehicles 4 are stopped. Moreover, the 3V direction pedestrian stops and the 3V direction vehicles 6 and 7 stop.

  Next, the interlocking operation by the parent device signal control device 22, the 1V downstream signal control device 26, and the 1V upstream signal control device 29 will be described with reference to FIG. The numbers shown in FIG. 5 represent step numbers.

  At intersection 1, control is performed from step 1 by the main unit signal controller 22, and at 1V downstream intersection 12 and 1V upstream intersection 15, 1V downstream signal controller 26 and 1V upstream signal controller 29 In the state where the control is performed from step 2, the base unit signal control device 22, the 1V downstream signal control device 26, and the 1V upstream signal control device 29 sequentially perform control based on the step signal.

  Then, after the control based on each step signal is performed by the 1V downstream signal control device 26 and the 1V upstream signal control device 29, the control waits in a state where the control of Step 1 is continued. When the control of the master signal control device 22 is switched from step 1 to step 2, an interlocking signal is output to the 1V downstream signal control device 26, whereby the 1V downstream signal control device 26 performs step 1 to step 1. 2 and the control in step 2 is performed. On the other hand, when the control of the parent device signal control device 22 is switched from step 5 to step 6, an interlocking signal is output to the 1V upstream signal control device 29, whereby the 1V upstream signal control device 29 performs steps 1 to step. 2 and the control in step 2 is performed.

  By controlling in this way, at the 1V downstream side intersection 12, control linked to the control by the parent device signal control device 22 is performed. In conjunction with the timing at which 2 stops, the 1V downstream signal control device 26 controls the red. On the other hand, at the 1V upstream side intersection 15, when only the 2V direction vehicle 4 is traveling with the arrow direction traffic signal 9 turned blue by the master unit signal control device 22, the 1V upstream side signal control device 29 is also upstream. The 1V / 2V direction vehicle traffic light 16 is controlled to blue, and the 1V upstream signal control device 29 controls the upstream side 1V · 2V at the timing when the master unit signal control device 22 controls the 2V direction vehicle traffic light 5 to red. The direction vehicle signal 16 is controlled to be red. Therefore, while the master unit signal control device 22 controls blue, the 1V upstream side signal control device 29 can control blue so that the flow of the vehicle can be secured.

  As described above, in the present embodiment, the base unit signal control device 22 causes the 1V upstream signal control device 29 and the 1V downstream signal control device 26 to output interlocking signals at different timings. Based on this interlocking signal, each slave unit signal control device 26, 29 can perform interlocking control at different timings, so that the signal lamp can be controlled at an appropriate timing according to the flow of the vehicle, It is possible to ensure a smooth flow of the vehicle.

  In the above-described embodiment, the amount of traffic of the vehicle traveling in the 2V direction is large, and the case where the time difference type control is performed has been described. However, the interlock signal from the master signal control device 22 appropriately corresponds to the traffic amount of the vehicle. It is possible to output arbitrarily at timing.

  The present invention is not limited to the above-described embodiment, and various modifications can be made based on the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Intersection 2 1V direction vehicle 3 1V direction vehicle signal 4 2V direction vehicle 5 2V direction vehicle signal device 6 3V direction vehicle 7 3V direction vehicle 8 3V direction vehicle signal device 9 Arrow direction signal device 10 1V and 2V direction pedestrian signal device 11 3V direction pedestrian traffic lights 12 1V downstream intersection 13 downstream 1V / 2V direction traffic lights 14 downstream 3V direction traffic lights 15 1V upstream intersection 16 upstream 1V / 2V direction traffic lights 17 upstream 3V direction vehicles Traffic light 18 Downstream 1V / 2V pedestrian traffic light 19 Upstream 1V / 2V pedestrian traffic light 20 Downstream 3V pedestrian traffic light 21 Upstream 3V pedestrian traffic light 22 Parent unit signal control device 23 Parent Machine control unit 20 Master unit signal control circuit 26 1V downstream signal control device 27 1V downstream control unit 28 1V downstream Signal control circuit 29 1V upstream signal control device 30 1V upstream controller 31 1V upstream signal control circuit

Claims (2)

A master signal control device that switches the operation of the signal lamp installed at the intersection every step, and a slave unit signal that switches the operation of the signal lamp installed at the upstream and downstream sides of the vehicle traveling at the intersection every step A control device,
The base unit signal control device controls only the signal lamps in the direction with a large amount of traffic among the directions corresponding to the upstream and downstream sides to blue, and the slave unit signal control unit on the downstream side in the direction with a large amount of traffic is The traffic signal control system is characterized in that the signal lamp is set in blue and stands by, and when the interlock signal is output from the master signal control device, the signal lamp is controlled in red.   2. The traffic signal control system according to claim 1, wherein the slave unit signal control device switches and controls the operation of the signal lamp device in synchronization with the steps according to the interlocking signal.

Images