JP7151535B2 - Traffic information processing device, traffic information processing method, traffic information processing program, and traffic information processing system - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technique for outputting information from a traffic signal lamp at an intersection, and particularly to a technique suitable for outputting the information to a moving vehicle such as an automatic driving vehicle.

One issue related to the practical application of automated driving vehicles is compatibility with conventionally installed traffic signal lights. For example, at an intersection, when the lighting state of a traffic light changes to yellow or red, the vehicle will suddenly stop if the vehicle cannot predict the change in advance. It cannot be said that this is desirable from the standpoint of securing safety.

Therefore, in order to solve the above problem, there is a signal information transmission device configured to transmit the time until the light color of a traffic signal (vehicle signal lamp) switches to red to a vehicle approaching an intersection (for example, , see Patent Document 1). In this system, a traffic signal lamp is connected to a traffic control center via a signal information transmission device, and transmits the time until the light color changes to red to vehicles moving near the intersection.

JP 2012-233854 A

However, the signal information transmitting device (signal controller) disclosed in Patent Document 1 or the like is based on the assumption that it is connected to a control center. That is, the signal information transmission device described in Patent Document 1 cannot notify the vehicle of the time until the light color of the vehicle signal lamp is switched when it is not connected to the control center.

An object of the present invention is to determine the remaining time until the light color of a traffic signal light is switched for a vehicle approaching an intersection, regardless of whether or not a signal controller for controlling the traffic signal light is connected to a control center. It is to provide a technology for notification.

In order to achieve the above object, the traffic information processing apparatus of the present invention is configured as follows.

Since a power supply line through which a drive current flows is connected to the pedestrian signal light device and the vehicle signal light device, the input current can be detected by using this power supply line. The traffic information processing device includes a current detection section that detects this input current. A lighting detector is provided for detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to a change in the input current detected by the current detector.

The lighting state refers to any one of lighting, blinking, and extinguishing states of the lamp. Since the input current differs for each of these three states, the lighting detection unit detects the input current to determine the current lighting state, for example, the current lighting state of a pedestrian traffic light, such as blue lighting, blue flashing, red lighting, and so on. Each switching timing can be detected.

The traffic information processing device further includes a time setting section, a signal information generation section, and an output section.

The time setting unit preliminarily sets a time t1 from a first time point P1 at which the lighting state of the pedestrian signal light device starts the first state to a second time point P2 at which the lighting state of the vehicle signal light device starts the second state. set. As an example, the first state is a green flashing state of the pedestrian traffic light device, and the second state is a yellow lighting state of the vehicle traffic light device. In this case, the time t1 is the time obtained by adding the blinking time of the green light of the pedestrian signal light and the time until the vehicle signal light starts to turn yellow. Set by measurement or reception from the server. This time t1 is stored in memory.

The signal information generation unit generates a signal after time PA(n+1) at which the pedestrian signal light device changes to the first state in the next control cycle (n+1) and thereafter based on this time PA(n+1) and time t1. to generate the remaining time up to the time point PB(n+1) at which the second state is started. In the above example, the remaining time coincides with the time t1 measured in the previous (n) control cycle, and this remaining time is the time until the vehicle signal lamp turns yellow next time.

The output unit outputs remaining time information based on the remaining time. For example, the output unit transmits to a vehicle moving near an intersection using a communication device or the like.

In this configuration, the output remaining time information is the time up to the time point PB(n+1) at which the second state is next started. In the above example, it is the time until the vehicle signal lamp next changes to yellow. By knowing the remaining time, the vehicle can prevent a situation in which the light device turns red and the vehicle has to stop suddenly. The remaining time information may be information obtained by adding the absolute time at the time of output to the remaining time, or the absolute time PB(n+1) obtained by adding them.

The remaining time coincides with t1 at the point in time PA(n+1). After time point PA(n+1), t1-(elapsed time from PA(n+1)). In this case, the vehicle can continuously know the remaining time after time PA(n+1).

The time setting unit further measures the control cycle of the signal lamp device, and the output unit determines that the remaining time information is invalid when the cycle measured in the previous control cycle is different from the cycle measured in the current control cycle. output that

When the control cycle of the signal lamp device varies depending on the day of the week, time zone, etc., the time t1 measured in the control cycle at the time of the variation cannot be used in the current control cycle. This is because the time t1 in the current control cycle is different from the time t1 in the previous control cycle (at the time of fluctuation). Therefore, in this case, the output of remaining time information is disabled.

According to the present invention, since information on the remaining time until the light color of the traffic signal lamp is switched can be output, safe deceleration control and stop control can be performed by informing vehicles such as automated vehicles in the vicinity of the intersection of the remaining time. becomes possible.

It is a schematic diagram showing an intersection. FIG. 2 is a schematic diagram showing a connection relationship between a traffic information processing device, a signal controller, a pedestrian signal lamp, and a vehicle signal lamp; FIG. 3A is a diagram showing an example of times associated with light colors of traffic signal lights. FIG. 3(B) is a diagram showing changes in the input current of the pedestrian traffic signal "green" lamp unit in the control cycle cy. FIG. 3(C) is a diagram showing changes in the input current of the pedestrian traffic light "green" lamp in two cycles of the control cycle cy. It is a block diagram which shows the structure of the principal part of a signal controller. It is a block diagram which shows the structure of the principal part of a traffic information processing apparatus. It is a flowchart which shows an example of operation|movement of a traffic information processing apparatus. FIG. 10 is a diagram showing changes in the input current of the pedestrian traffic light “green” light device in the control cycle cy of Modification 1; 9 is a flow chart showing an example of the operation of the traffic information processing device according to Modification 1; 9 is a flow chart showing an example of the operation of the traffic information processing device according to modification 2; FIG. 11 is a schematic diagram showing a connection relationship among a traffic information processing device, a signal controller, a pedestrian signal light device, and a vehicle signal light device in Modified Example 3; A table stored in the server 200 is shown. FIG. 12 is a sequence diagram showing exchange of information between the server and the traffic information processing device in the system according to Modification 3;

Embodiments of the present invention will be described below.

<1. Application example>
FIG. 1 is a schematic diagram showing an intersection. FIG. 2 is a schematic diagram showing a connection relationship among the traffic information processing device 1, the signal controller 2, the pedestrian signal light device 3a, and the vehicle signal light device 3b according to the embodiment.

In order to simplify the explanation, the configuration for pedestrians and vehicles whose advancing direction is the vertical direction in FIG. 1 will be described below. The configuration is also the same. In the following description, the terms have the following meanings.

Signal light device--pedestrian signal light device 3a or vehicle signal light device 3b
・Lighting state--either lit, flashing, or extinguished ・Lighting device--any of the lighting devices for displaying "blue", "yellow" or "red" ・Control cycle of signal light--signal light device Control cycle of the on/off control pattern At the intersection, as shown in FIG. It is

The vehicle signal lamp device 3b is provided for a vehicle traveling in the vertical direction in FIG.

The pedestrian signal light device 3a is provided for pedestrians crossing in the vertical direction in FIG.

The signal controller 2 performs lighting control of the signal lamp based on signal control parameters sent from a traffic control center (not shown) or the like. The signal controller 2 is connected to an AC power supply (commercial power supply) 100 as shown in FIG. The signal controller 2 supplies power from an AC power supply (commercial power supply) 100 to each of the pedestrian signal lamps 3a through power supply lines 2a1 and 2a2. The signal controller 2 also supplies electric power to each of the vehicle signal lamps 3b through power supply lines 2b1 to 2b3.

The signal controller 2 may be controlled by previously prepared signal control parameters inside the controller without being connected to the traffic control center.

The current probe 41 is connected to the traffic information processing device 1 . The current probes 41 are arranged so as to sandwich the power supply lines 2a (1 and 2) of the "blue" and "red" lights of the pedestrian signal lights 3a. The current probe 41 detects the magnitude (current value) of the input current flowing through the power supply line 2a (1 and 2). The current probe 41 outputs the detected current value to the traffic information processing device 1 .

Also, the current probe 42 is connected to the traffic information processing device 1 . The current probe 42 is arranged so as to sandwich the power supply lines 2b (1 to 3) of the "blue", "yellow" and "red" lamp units of the vehicle signal lamp unit 3b. The current probe 42 detects the magnitude (current value) of the input current flowing through the power supply line 2b (1-3). The current probe 42 outputs the detected current value to the traffic information processing device 1 .

FIG. 3A shows a combination of lighting states of the pedestrian signal lamp 3a and the vehicle signal lamp 3b and the times ta to te associated therewith. FIG. 3(B) is a diagram showing the magnitude and variation of the input current of the "green" light device of the pedestrian signal light device 3a. cy in the figure is the control period. FIG. 3(C) shows two control cycles of FIG. 3(B).

Each time ta to te is determined according to a signal control parameter for controlling the light color of the signal lamp.

As shown in FIG. 3A, the time during which both the vehicle signal lamp 3b and the pedestrian signal lamp 3a are blue (each "blue" lamp is lit) is time ta. The time during which the light color of the vehicle signal light device 3b is blue (“blue” light device is lit) and the light color of the pedestrian signal light device 3a is blue flashing (“blue” light device is flashing) is , time tb. The time during which the light color of the vehicle signal light device 3b is blue (“blue” light device lights up) and the light color of the pedestrian signal light device 3a is red (“red” light device lights up) is is time tc. The time during which the light color of the vehicle signal light device 3b is yellow (“yellow” light device lights up) and the light color of the pedestrian signal light device 3a is red (“red” light device lights up) is is time td. The time during which the vehicle signal lamp 3b and the pedestrian signal lamp 3a are both red (each "red" lamp is lit) is time te.

As shown in FIG. 3B, at time ta, the input current of the "green" light device of the pedestrian signal light device 3a is I, and at time tb, the same current intermittently repeats I and zero. . The input current is zero at tc, td, and te thereafter. The traffic information processing device 1 detects these input currents from the output of the current probe 41 . In FIG. 3B, the current indicated by the dotted line in the period td is the input current flowing through the "yellow" lamp of the vehicle signal lamp 3b.

In the control cycle (n), the traffic information processing apparatus 1 controls the first time point PA(n) at which the magnitude of the input current to the "green" light device of the pedestrian signal light device 3a intermittently changes from I to the When the second time point PB(n) at which the input current of the "yellow" lamp device of the signal lamp device 3b becomes I is detected, the time t1 from PA(n) to PB(n) is detected. Then, at the first time point PA(n+1) of the next control period (n+1), the time t1 is output as the remaining time until the "yellow" lamp device starts lighting. Note that the first points in time PA(n), PA(n+1), PB(n), and PB(n+1) are all relative points in each control cycle and do not mean absolute points in time.

In FIG. 3C, PA(1) and PB(1) are detected in the control cycle cy(1) with n=1 to measure the time t1, and PA( When 2) is detected, the time t1 is output as the remaining time. Also, in the control cycle cy(2) with n=2, PA(2) and PB(2) are detected and time t1 is measured, and in the control cycle cy(3) with n=3 PA(3) is detected. Time t1 is output as the remaining time. Hereinafter, it repeats for each control cycle.

In FIG. 3C, the current indicated by the dotted line during the period td is the input current flowing through the "yellow" lamp of the vehicle signal lamp 3b.

As described above, in this embodiment, the traffic information processing device 1 is installed separately from the existing signal controller 2 and the signal lights 3a and 3b installed at the intersection, and the current from the traffic information processing device 1 is The probes 41 and 42 are sandwiched between the power supply lines from the signal controller 2 . With such a configuration, there is no need to modify the existing signal controller 2 or power supply line.

Further, since the remaining time until PB(n+1) is output when PA(n+1), the vehicle can drive safely by knowing this remaining time. That is, the vehicle can slowly apply the brakes until the "yellow" lamp of the vehicle signal lamp turns yellow.

In the above embodiment, when PA(n+1) is detected, the time t1 measured in the previous control period (n) is output as the remaining time. In this case, after PA(n+1), it is possible to continuously output t1-(elapsed time from PA(n+1)) as the remaining time.

Further, in the above embodiment, when PA(n+1) is detected, the time t1 measured in the previous control cycle (n) is output as the remaining time. Instead of this, when PA(n+1) is detected, the time calculated by adding the absolute time at that time to the time t1 measured in the previous control cycle (n), or by adding the absolute time at that time to the time t1 + the absolute time at that time can be output. This gives the vehicle the absolute time at PB(n+1). In this way, even if there is a communication delay until the information reaches the vehicle from the output unit, the vehicle can accurately know the timing of PB(n+1). For example, when the absolute time at the time of output from the output unit is 10:00:00 and the remaining time is 5 seconds, the time of PB(n+1) is 10:00:05. At this time, even if there is a communication delay of one second, the vehicle correctly recognizes the time of PB(n+1) as 10:00:05. On the other hand, as in the above embodiment, when the remaining time of 5 seconds is output, if there is a communication delay of 1 second, the actual remaining time is 4 (=5-1) when the information reaches the vehicle. ) seconds, it is recognized as 5 seconds. That is, an error of 1 second occurs.

Therefore, it is more accurate that the remaining time information output from the output unit is information obtained by adding the absolute time at the time of output to the remaining time, or the absolute time PB(n+1) obtained by adding them, rather than the remaining time. Become.

However, in this case, the traffic information processing device and the vehicle are provided with means for knowing the absolute time. For example, by providing a GPS device, it is possible to know the absolute time.

<2. Configuration example>
FIG. 4 is a block diagram showing the configuration of main parts of the signal controller 2. As shown in FIG. The signal controller 2 includes a control unit 20 and a switching unit 22 . The control unit 20 includes a power supply section 23 , a signal control section 24 and a storage section 25 .

The power supply unit 23 supplies electric power (input current) from the AC power supply 100 to each light device of the pedestrian signal light device 3a through the power supply lines 2a1 and 2a2. Further, the power supply unit 23 supplies power (input current) from the AC power supply 100 to each lamp device of the vehicle signal lamp device 3b through the power supply lines 2b1 to 2b3.

The storage unit 25 stores signal control parameters sent from a control center or the like.

The signal control section 24 controls the switching unit 22 using the signal control parameters stored in the storage section 25 .

The switching unit 22 includes SW221-225. The switching unit 22 is provided between the power supply section 23 of the control unit 20 and each signal lamp. The switching unit 22 turns on and off the SWs 221 to 225 under the control of the signal control section 24, and the currents I1 and I2 for driving the lamps are output to the corresponding power supply lines 2a1 to 2a2 and 2b1 to 2b3.

FIG. 5 is a block diagram showing the configuration of the main part of the traffic information processing device 1. As shown in FIG. The traffic information processing device 1 includes a control unit 11 and an output section 12, as shown in FIG.

The control unit 11 includes a current detection section 110 , a lighting detection section 111 , a time setting section 112 , a signal information generation section 113 and a storage section 114 .

The current detection unit 110 detects the magnitude (current value) of the input currents output by the current probes 41 and 42 .

The lighting detection unit 111 detects the lighting state by detecting a change in the magnitude of the input current. In the control cycle shown in FIG. 3(C), the "blue" light device of the pedestrian signal light device 3a switches from lighting to blinking (PA(1) in cy(1), PA( 2)) is detected. Further, the lighting detection unit 111 detects the lighting start time (PB(1) in cy(1), PB(2) in cy(2)) when the “yellow” lamp of the vehicle signal lamp 3b becomes yellow. do.

Time setting unit 112 measures time t1 from PA(n) to PB(n) in each control cycle cy(n). In FIG. 3C, the time t1 from PA(1) to PB(2) is measured in cy(1).

The signal information generation unit 113 generates the remaining time up to the point PB(n+1) at which the second state starts based on PA(n+1) and the time t1 in each control cycle cy(n+1). In FIG. 3C, signal information generating section 113 generates the remaining time to PB(2) in cy(2) when PA(2). The remaining time at this time is the time t1 measured in cy(1).

Storage unit 114 stores time t1.

The output unit 12 wirelessly outputs the time t1 generated by the signal information generation unit 113 to the vehicle.

The control unit 11 of the traffic information processing device 1 is composed of a hardware CPU, a memory (storage unit 114), and other electronic circuits. The hardware CPU operates as the time setting section 112 and the signal information generating section 113 when executing the traffic information processing program according to the present invention. The memory also has an area for storing the traffic information processing program according to the present invention, and a work area for temporarily storing data generated when the traffic information processing program is executed. The control unit 11 may be an LSI that integrates a hardware CPU, memory, and the like. Also, the hardware CPU is a computer that executes the traffic information processing method according to the present invention.

<3. Operation example>
The operation of the traffic information processing device 1 will be described with reference to FIG. FIG. 6 is a flow chart showing the operation of the main part of the traffic information processing device 1. As shown in FIG. Reference numerals in FIG. 6 refer to FIGS. 3B and 3C.

First, the operation in the control period cy(1) will be described.

The current detector 110 detects the input current to each lamp (S11). The lighting detection unit 111 detects the first time point PA(1) from the detected input current (S12: Yes). The lighting detection unit 111 detects the second time point PB(1) (S13). When the lighting detection unit 111 detects the second time point PB(1) (S13: Yes), the time setting unit 112 calculates the time t1 by (PB(1)-PA(1)) and sets it. (S14). Storage unit 114 stores time t1 (S15).

The operation of control cycle cy(2) will be described.

In the control cycle cy(2), when the lighting detection unit 111 detects the first time point PA(2) (S16: Yes), the signal information generation unit 113 generates t1 measured in S14 as the remaining time, and outputs The unit 12 wirelessly outputs this to the vehicle (S17).

In this embodiment, the traffic information processing device 1 is installed separately from the existing signal controller 2 and the signal lights 3a, 3b installed at the intersection, and the current probes 41, 42 from the traffic information processing device 1 are installed. It is inserted into the power supply line from the signal controller 2. With such a configuration, there is no need to modify the existing signal controller 2 or power supply line.

In addition, since the remaining time until the "yellow" light device is turned on is output to the vehicle, it is possible for the vehicle to perform gentle braking before the intersection, and safety can be ensured. For example, assuming that a vehicle traveling at a speed of 60 km/h requires a distance of 30 meters to stop, output the remaining time for the yellow lamp to turn on at a position that is at least 30 meters away from the stop line. becomes possible.

Note that the time t1 set by the time setting unit 112 does not have to be between PA(1) and PA(2). For example, time t1 may be the time between PA(1) and the start of te. In this case, the vehicle will know how much time is left before the 'red' lamp lights up.

In the above operation example, the remaining time is output in S17. can be output as remaining time information. In this case, the traffic information processing device 1 is provided with a GPS device, and the absolute time is known from the GPS information. Alternatively, instead of this, it can be substituted by providing an accurate clock. Vehicles are also equipped with GPS devices and accurate clocks so that absolute time can be obtained even in vehicles.

The remaining time information output from the output unit is information obtained by adding the absolute time at the time of output to the remaining time, or the absolute time at the time point PB(n+1) obtained by adding them. Even if a communication delay occurs in the vehicle, the vehicle can accurately grasp the time point PB(n+1).

<4. Variation>
FIG. 7 is a diagram illustrating another embodiment of the traffic information processing device 1. As shown in FIG. The figure shows the magnitude and change of the input current of the "green" light device of the pedestrian signal light device 3a.

Signal information generator 113 generates remaining time tx every tm after time point PA(1). tx is t1-(elapsed time from PA(1)). tm is a preset time, and the elapsed time is the time obtained by multiplying tm by the number of times. For example, when tm has elapsed from PA(1), the remaining time tx is generated as tx=t1-tm. When 2tm have elapsed from PA(1), the remaining time tx is generated as tx=t1-2tm.

FIG. 8 is a flow chart showing the operation of the main part of the traffic information processing device 1. As shown in FIG.

In operation, the difference from FIG. 6 is that S18 and subsequent steps are added.

When tm has passed since the remaining time t1 was transmitted in S17 (S18), the remaining time tx (t1-tm) is transmitted. Thereafter, the remaining time tx is transmitted each time tm elapses, and when PB(1) is detected (S20), the operation ends.

With such control, the remaining time tx can be continuously output every tm from PA(1). and more accurately.

Also in this modification, the remaining time information output from the output unit can be information obtained by adding the absolute time at the time of output to the remaining time, or the absolute time at time point PB(n+1) obtained by adding them. is.

FIG. 9 is a diagram illustrating still another embodiment of the traffic information processing device 1. As shown in FIG. This figure is a flow chart showing the operation of the main part of the traffic information processing device 1 .

In operation, the difference from FIG. 6 is that S30 and subsequent steps are added.

In S16, when PA(2) is detected, it is detected whether or not the control cycle has changed. If the control cycle fluctuates, there is a possibility that the remaining time t1 obtained this time is not correct, so invalidation processing is performed without transmitting the remaining time t1 (S31). The detection of the fluctuation of the control period is, for example, whether cy(n-2) and cy(n-1) are different in the control period cy(n), or whether the "green" light of the pedestrian traffic light device 3a is detected. It can be detected by detecting whether the lighting time ta of the device is different from the previous time and this time, and can be detected by any other method. It is also possible to detect a change in the control cycle by monitoring an arbitrary time point within cy and measuring the previous and current periods at this time point.

FIG. 10 shows yet another embodiment. The figure shows that a server is connected to the traffic information processing device. By exchanging information with the server 200, the traffic information processing device 1 can perform more accurate and flexible control.

FIG. 11 shows a table stored in the server 200. As shown in FIG. The first table in FIG. 4A represents the relationship between the control cycle and time t1. The second table in FIG. 4B shows the relationship between the day of the week/time zone and the control cycle.

FIG. 12 shows the control of the traffic information processing device 1 and the server 200 in chronological order.

The traffic information processing apparatus 1 transmits this to the server 200, if a control period is measured. The server 200 extracts the time t1 that matches the transmitted control cycle with reference to the first table shown in FIG.

After obtaining the time t1 sent from the server 200, the traffic information processing apparatus 1 transmits the time t1 to the vehicle as the remaining time when PA(1) is detected in the next control cycle.

Note that the second table in FIG. 4B indicates that the control cycle differs depending on the day of the week and the time zone. The first table is set with reference to the second table.

In this embodiment, the time setting unit 112 of the traffic information processing device 1 does not need to measure the time t1, and can be set by receiving the time t1 from the server 200. FIG. With this configuration, there is no need to detect PB(n), so a current probe for detecting the lighting state of the vehicle signal lamp (the lighting state of the "yellow" lamp) is not required. Further, since the time t1 is managed by the server, accurate and detailed management is possible.

<5. Note>
a current detection unit (110) for detecting an input current input to a pedestrian signal light device (3a) and a vehicle signal light device (3b) installed at an intersection and having parallel traveling directions;
a lighting detection unit (111) for detecting lighting states of the pedestrian signal lamp (3a) and the vehicle signal lamp (3b) based on changes in the input current detected by the current detection unit (110);
From a first time point PA(n) at which the lighting state of the pedestrian signal light device (3a) starts the first state within the signal light device control period (n) (n is arbitrary from 1, 2, etc.) a time setting unit (112) for presetting a time (t1) until a second point in time PB(n) at which the lighting state of the signal lamp (3b) starts the second state;
After the time point PA(n+1) when the pedestrian signal light device (3a) changes to the first state, the time point PB(n+1) at which the second state is started based on the time point PA(n+1) and the time t1. ), a signal information generator (113) that generates the remaining time (tx) until
an output unit (12) that outputs the remaining time (tx);
comprising a
Traffic information processor.

1, 1A, 1B... Traffic information processing device 3a... Pedestrian signal lamp 3b... Vehicle signal lamp 110... Current detector 12... Output part 112... Time setting part 113... Signal information generator PA... First time point PB... Second time point t1...Time tx...Remaining time

Claims (13)

a current detection unit for detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection unit for detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to a change in the input current detected by the current detection unit;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting unit that presets a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generator that generates the remaining time;
an output unit that outputs remaining time information based on the remaining time ,
The signal information generating unit generates the remaining time as t1-(elapsed time from PA(n+1)) after the time point PA(n+1),
Traffic information processor. a current detection unit for detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection unit for detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to a change in the input current detected by the current detection unit;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting unit that presets a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generator that generates the remaining time;
an output unit that outputs remaining time information based on the remaining time,
The time setting unit further measures the signal lamp device control cycle,
The traffic information processing apparatus, wherein the output unit outputs that the remaining time information is invalid when the previous signal light device control cycle is different from the current signal light device control cycle. The time setting unit further measures the signal lamp device control cycle,
2. The traffic information processing apparatus according to claim 1, wherein said output unit outputs that said remaining time information is invalid when said previous signal light device control cycle is different from said current signal light device control cycle. The traffic information processing apparatus according to any one of claims 1 to 3 , wherein said remaining time information is said remaining time. The traffic information processing according to any one of claims 1 to 3 , wherein said remaining time information is information obtained by adding an absolute time at the time of output to said remaining time, or an absolute time at time point PB(n+1) obtained by adding them. Device. The traffic information processing apparatus according to any one of claims 1 to 5 , wherein said signal information generator generates said remaining time as t1 at said point in time PA(n+1). The traffic information processing according to any one of claims 1 to 6 , wherein said first state is a green flashing state of said pedestrian signal lamp, and said second state is a yellow lighting state of said vehicle signal lamp. Device. The traffic according to any one of claims 1 to 7, wherein the current detection unit detects a current value output from a current probe arranged in a power supply line to the pedestrian signal light device and the vehicle signal light device. Information processing equipment. a current detection step of detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection step of detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to the change in the input current;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting step of presetting a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generating step for generating remaining time;
an output step of outputting remaining time information based on the remaining time;
The signal information generating step is a step of generating the remaining time as t1-(elapsed time from PA(n+1)) after the time point PA(n+1).
Traffic information processing method. a current detection step of detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection step of detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to the change in the input current;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting step of presetting a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generating step for generating remaining time;
an output step of outputting remaining time information based on the remaining time;
The time setting step is a step of also performing a process of measuring the signal lamp device control cycle,
The output step is a step of outputting that the remaining time information is invalid when the previous signal lamp control period and the current signal lamp control period are different.
Traffic information processing method. a current detection step of detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection step of detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to the change in the input current detected in the current detection step;
The lighting state of the vehicle signal lamp from a first time point PA(n) at which the lighting state of the pedestrian signal lamp starts the first state within the control period (n) (n is arbitrary from 1, 2, . . . ). a time setting step of presetting a time t1 until a second point in time PB(n) at which PB(n) begins the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generating step for generating remaining time;
an output step of outputting remaining time information based on the remaining time;
on the computer, and
The signal information generating step is a step of generating the remaining time as t1-(elapsed time from PA(n+1)) after the time point PA(n+1).
Traffic information processing program. a current detection step of detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection step of detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to the change in the input current;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting step of presetting a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generating step for generating remaining time;
causing a computer to execute an output step of outputting remaining time information based on said remaining time;
The time setting step is a step of also performing a process of measuring the signal lamp device control cycle,
The output step is a step of outputting that the remaining time information is invalid when the previous signal lamp control period and the current signal lamp control period are different.
Traffic information processing program. A traffic information processing device and a server connected to the traffic information processing device,
The traffic information processing device
a current detection unit for detecting an input current input to a pedestrian signal light device and a vehicle signal light device installed at an intersection and having parallel traveling directions;
a lighting detection unit for detecting lighting states of the pedestrian signal lamp and the vehicle signal lamp according to a change in the input current detected by the current detection unit;
From a first time point PA(n) at which the lighting state of the pedestrian signal light device starts the first state within the signal light device control cycle (n) (n is arbitrary from 1, 2, etc.), the vehicle signal light device a time setting unit that presets a time t1 until a second point in time PB(n) at which the lighting state starts the second state;
After the time point PA(n+1) when the pedestrian signal light device changes to the first state, up to the time point PB(n+1) when the second state is started based on the time point PA(n+1) and the time t1. a signal information generator that generates the remaining time;
an output unit that outputs remaining time information based on the remaining time,
The server comprises a first table showing the relationship between the signal lamp control period (n) and the time t1,
The time setting unit of the traffic information processing device further measures the current traffic light device control cycle and transmits it to the server,
The server refers to the first table when receiving the current traffic signal control period from the traffic information processing device, extracts the time t1 of the current traffic signal control period, and extracts the time t1 of the current traffic signal control period. A traffic information processing system that sends to the device.

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