JP5716310B2 - Traffic signal controller - Google Patents

Description

  The present invention relates to a traffic signal controller that switches the color of a plurality of signal lamps.

  The traffic signal controller switches the lamp color of each signal lamp based on step information including lamp color information that defines the lamp color of each signal lamp and the display time of each lamp color for each step (step) (patent) Reference 1). The traffic signal controller monitors whether or not its own state is normal. If the traffic signal controller determines that the light color control with the normal three color lights (red, yellow, blue) of the signal light device cannot be performed based on the predetermined step information, for example, the traffic light controller When the color of the signal lamp turns blue at the same time, based on the flash signal from the flash circuit, the signal lamp is flashed (for example, a combination of yellow flashing and red flashing, red flashing, etc.) Or, caution is given to pedestrians to prevent traffic accidents.

  FIG. 12 is a block diagram illustrating a configuration example of a conventional traffic signal controller 200. As shown in FIG. 12, the traffic signal controller 200 includes a control unit 201 that outputs a lamp color signal to control the lamp color of each signal lamp 1 based on the present data 203, and a host device in an external control center. A lamp color output that outputs a lamp color output state (for example, AC 100 V or a predetermined voltage) to each signal lamp unit 1 based on the lamp color signal output from the interface unit 202 and the control unit 201 having a communication function with 300. The circuit 205 and the voltage output from the lamp color output circuit 205 are detected to obtain the blue state of the lamp color of each signal lamp 1, for example, the blue-blue state where the signal lamp 1 for each of the intersecting roads is simultaneously blue. And a blue-blue detection circuit 204 that outputs the detected image to the control unit 201.

  When a blue-blue state is detected by the blue-blue detection circuit 204, a flash signal from a flash circuit (not shown) is output to the lamp color output circuit 205 to avoid a dangerous blue-blue state that may cause a traffic accident.

JP-A-62-111395

  However, in the conventional traffic signal controller 200, when the blue-blue detection circuit 204 fails for some reason, the abnormality of the blue-blue detection circuit 204 cannot be detected. For this reason, for example, when the signal lamp 1 for each intersecting road becomes a blue-blue state that becomes blue at the same time, there is a possibility that the blue-blue state cannot be reliably detected.

  The present invention has been made in view of such circumstances, and traffic signal control capable of determining whether or not a detection function for detecting a state in which a combination of lamp colors of a signal lamp is prohibited is normal. The purpose is to provide a machine.

Traffic signal control apparatus according to the first invention comprises a light color output circuit for outputting a predetermined voltage to exceptionally drive the plurality of signal lamp device, the traffic signal controller for switching the light color of each signal lamp device, the lamp The color output circuit is configured to output a lamp color output state as a signal indicating whether or not the voltage is output to each signal lamp, and separately from the lamp color output state output by the lamp color output circuit. a generation unit that generates without reflect the simulation signal for simulating a state in which the combination of the light color of each signal lamp device is prohibited to light color display of the respective signal lamp device, the lamp color output state and / or the In accordance with the simulation signal generated by the generation unit, a prohibition state detection unit that outputs a prohibition state signal indicating whether or not the combination of lamp colors is prohibited, and the simulation signal generated by the generation unit and / or The prohibition state detection unit Based on the output the inhibit state signal, characterized in that it comprises a determination unit that determines normality / abnormality of the prohibition state detecting unit.
The traffic signal controller according to the second aspect of the present invention generates a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited in the traffic signal controller that switches the lamp colors of a plurality of signal lamps. A prohibition state signal indicating whether or not the combination of the lamp colors is prohibited according to the generator and the lamp color output state of each signal lamp and the simulation signal generated by the generator A state detection unit, and a determination unit that determines normality / abnormality of the prohibited state detection unit based on the simulated signal generated by the generation unit and / or the prohibited state signal output by the prohibited state detection unit, The generation unit is configured to generate a simulation signal that simulates a state in which the color of at least two of the signal lamps is blue when none of the signal lamps is blue. It is characterized by.
The traffic signal controller according to the third aspect of the present invention generates a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited in the traffic signal controller that switches the lamp colors of the plurality of signal lamps. A prohibition state signal indicating whether or not the combination of the lamp colors is prohibited according to the generator and the lamp color output state of each signal lamp and the simulation signal generated by the generator A state detection unit, and a determination unit that determines normality / abnormality of the prohibited state detection unit based on the simulation signal generated by the generation unit and / or the prohibited state signal output by the prohibited state detection unit, The generation unit simulates a state in which the color of a signal lamp other than the one signal lamp is blue after a lapse of a predetermined time from the time when the lamp color of any one of the signal lamps is switched. Configure to generate signal And wherein the are.
The traffic signal controller according to the fourth aspect of the present invention generates a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited in the traffic signal controller that switches the lamp colors of the plurality of signal lamps. A prohibition state signal indicating whether or not the combination of the lamp colors is prohibited according to the generator and the lamp color output state of each signal lamp and the simulation signal generated by the generator A state detection unit, a determination unit that determines normality / abnormality of the prohibited state detection unit based on a simulation signal generated by the generation unit and / or a prohibited state signal output by the prohibited state detection unit, and the generation unit If the obtained lamp color output state is blue, the simulated color signal generated and / or the lamp color output state of each signal lamp device is acquired. Blue monitoring output to The prohibition state detection unit includes a simulated signal and / or lamp color output state acquired from the blue monitoring unit, indicating that the lamp color of at least two signal lamps is blue simultaneously. A prohibition state signal indicating that the combination is prohibited is output. Further, based on the simulation signal and / or the lamp color output state acquired from the blue monitoring unit, the lamps of at least two signal lamps A factor determination unit is provided that determines whether or not the factor that causes the lamp color to become blue simultaneously is due to the simulated signal based on the time when the color becomes blue at the same time.
In the traffic signal controller according to the fifth aspect of the present invention, the traffic light controller according to the third aspect of the present invention acquires the simulated signal generated by the generation unit and / or the lamp color output state of each signal lamp, and the acquired lamp color output state is blue. In some cases, a blue color monitoring unit that outputs the lamp color output state and / or the acquired simulated signal to the prohibited state detection unit is provided, and the prohibited state detection unit includes the simulated signal and / or the lamp acquired from the blue color monitoring unit. When the color output state indicates that the light colors of at least two signal lamps are blue at the same time, the prohibition state signal indicating that the combination of the light colors is prohibited is output. Features.
The traffic signal controller according to a sixth aspect of the present invention is the traffic signal controller according to the fourth aspect or the fifth aspect, wherein when the light color of any one of the signal lamps is blue, the generator is the one signal lamp It is configured to generate a simulation signal for simulating a state in which the color of a signal lamp device different from the above is blue.
The traffic signal controller according to a seventh aspect of the present invention is the traffic signal controller according to the fifth aspect of the present invention, based on the simulated signal and / or the lamp color output state obtained from the blue monitoring unit, And a factor determination unit that determines whether or not the factor that causes the lamp color to become blue simultaneously is due to the simulation signal.

In the traffic signal controller according to an eighth aspect of the present invention, in the first or second aspect of the invention , the simulated signal generated by the generating unit and / or the lamp color output state of each signal lamp is acquired, and the acquired lamp color output state is In the case of blue, a blue monitoring unit that outputs the lamp color output state and / or the acquired simulation signal to the prohibition state detection unit is provided, and the prohibition state detection unit includes the simulation signal acquired from the blue monitoring unit and / or Alternatively, when the lamp color output state indicates that the lamp colors of at least two signal lamps are blue at the same time, a prohibition state signal indicating that the combination of lamp colors is prohibited is output. It is characterized by that.

Traffic signal controller according to a ninth invention, Oite eighth rounds bright, the generating unit, when light color of any one of the signal lamp device of the signal lamp device is blue, separate from the one of the signal lamp device It is configured to generate a simulation signal that simulates a state in which the color of the signal lamp is blue.

The traffic signal controller according to a tenth aspect of the present invention is the traffic signal controller according to the eighth aspect or the ninth aspect , wherein the generator is configured to change the one of the signal lamps after a predetermined time has elapsed from when the lamp color of the signal lamp is switched. It is configured to generate a simulation signal that simulates a state in which the color of the signal lamp other than the signal lamp is blue.

Traffic signal controller according to an eleventh invention, the at 8 any one of the invention to the tenth invention, on the basis of the simulation signal and / or light color output state obtained from the blue monitor, at least two signal lamp device And a factor determining unit that determines whether the factor that causes the lamp color to become blue simultaneously is due to the simulated signal based on the time when the lamp color becomes blue at the same time.

Traffic signal controller according to a twelfth invention, in any one of the eighth aspect to the eleventh aspect, wherein the determination unit, blue monitors the blue monitor is simulated signals and / or light color output state outputs Based on the signal and the prohibition state signal output from the prohibition state detection unit, the normality / abnormality of the prohibition state detection unit is determined.

A traffic signal controller according to a thirteenth aspect of the present invention is the traffic signal controller according to any one of the eighth to twelfth aspects of the present invention, wherein the generating unit generates a simulation signal in which the light colors of at least two signal lamps are simultaneously blue. A self-diagnosis unit for diagnosing an abnormality is provided when the simulated signal and / or lamp color output state output from the blue monitoring unit indicates that the lamp colors of at least two signal lamps are not blue at the same time.

A traffic signal controller according to a fourteenth aspect of the present invention is characterized in that, in any one of the first to thirteenth aspects, the traffic signal controller includes a notifying unit that notifies abnormality information indicating an abnormality of the prohibited state detecting unit to the outside. .

  In the first invention, the generation unit generates and outputs a simulation signal (also referred to as a simulated blue signal) for simulating a state where the combination of the lamp colors of each signal lamp is prohibited. The state where the combination of the lamp colors of each signal lamp is prohibited refers to, for example, a blue-blue state in which the lamp colors of the signal lamps for the intersecting roads are simultaneously blue. The prohibition state detection unit is a lamp color output state of each signal lamp (for example, a signal indicating whether or not a predetermined voltage such as AC100V for driving the signal lamp is output to the signal lamp, also referred to as a blue output state) And / or according to the simulation signal generated by the generation unit (that is, only the lamp color output state, only the simulation signal, or the combination of the lamp color output state and the simulation signal), the combination of the lamp colors is prohibited. A prohibition state signal (also referred to as a blue-blue abnormality signal) indicating whether or not the state is present is output. The determination unit determines normality / abnormality of the prohibited state detection unit based on the simulation signal generated by the generation unit and the prohibited state signal output by the prohibited state detection unit.

  In other words, when the generation unit generates and outputs a simulated signal so that the prohibition state detection unit outputs a prohibition state signal indicating that the combination of lamp colors is prohibited, the prohibition state detection unit is normal. If so, the prohibition state detection unit should output a prohibition state signal indicating that the combination of lamp colors is prohibited. Therefore, by comparing the simulated signal generated and output by the generation unit with the prohibition state signal output by the prohibition state detection unit, the prohibition state for detecting the state where the combination of the lamp colors of the signal lamp is prohibited The normality / abnormality of the detection unit can be determined.

In the fourth invention , the fifth invention, or the eighth invention , the blue monitoring unit acquires the simulation signal generated by the generation unit and / or the lamp color output state of each signal lamp unit, and the acquired lamp color output state is When it is blue, the lamp color output state and / or the acquired simulation signal is output to the prohibition state detection unit. The blue lamp color output state and the simulation signal output from the blue monitoring unit to the prohibition state detection unit are also referred to as a blue output monitor. That is, the blue monitoring unit acquires a simulation signal for simulating the color of the signal lamp to blue, and a lamp color output state in which the lamp color of the signal lamp is blue, and outputs it to the prohibited state detection unit as a blue output monitor. The prohibition state detection unit, when the simulation signal and / or the lamp color output state acquired from the blue monitoring unit indicates that the combination of the lamp colors of which at least two signal lamps are prohibited is a combination of the lamp colors A prohibition state signal (blue / blue abnormality signal) indicating that the state is prohibited is output.

  Since the simulation signal generated by the generator is output to the blue monitoring unit so that it is not reflected in the lamp color display of the signal lamp, even during normal operation of switching the lamp color of the signal lamp by the traffic signal controller Using signals, it is possible to artificially create a blue-blue state that is a combination of blue where the color of the signal lamp is prohibited, and the normal / abnormal state of the prohibited state detection unit in parallel with the normal operation of the traffic signal controller Can be determined.

In the second invention, the generation unit generates a simulation signal that simulates a state in which the color of at least two of the signal lamps is blue when none of the lamp colors of each signal lamp is blue. . Since none of the color of each signal lamp is blue, the blue monitoring unit will acquire only a simulated signal as a signal whose signal lamp color is blue, and output only the simulated signal to the prohibited state detection unit To do. For example, when outputting a simulation signal that is blue in a combination in which the lamp color is prohibited to the prohibition state detection unit, when the prohibition state detection unit does not output a prohibition state signal in a state in which the combination is prohibited, It can be determined that the prohibited state detection is abnormal. By using only the simulation signal, it is possible to determine normality / abnormality of only the prohibition state detection unit, except for the state of the signal line or the like through which the lamp color output state is transmitted.

In the sixth invention , the seventh invention, or the ninth invention , the generating unit, when the signal color of any one of the signal lamps is blue, the lamp of a signal lamp different from the one signal lamp A simulation signal that simulates a state where the color is blue is generated. For example, when the blue monitoring unit outputs a lamp color output state in which the lamp color of the signal lamp is blue and a simulated signal that simulates the lamp color of another signal lamp to blue, the prohibited state is detected. When the detection unit outputs a prohibition state signal in a prohibited blue state, it can be determined that the prohibition state detection unit is normal, and when the prohibition state detection unit does not output a prohibition state signal In addition to the abnormality of the prohibition state detection unit, the abnormality of the signal line transmitting the lamp color output state can be determined at the same time, and the portion estimated to be faulty can be extracted without omission.

In the third invention, the fifth invention, or the tenth invention , the generator is different from the one signal lamp device after a predetermined time has elapsed since the lamp color of any one of the signal lamp devices has been switched. A simulation signal for simulating a state in which the color of the signal lamp is blue is generated. The predetermined time can be, for example, about 2 to 30 ms. The lamp signal generated by the traffic signal controller to control the lamp color of the signal lamp is converted into a predetermined voltage such as AC100V in order to drive the signal lamp, and is output after determining the presence or absence of the voltage. The switching of the lamp color output state is delayed as compared with the lamp color switching time of the lamp color signal. For this reason, when a simulated signal is generated when the lamp color of the signal lamp is switched, the lamp color output state is the lamp color before the lamp color signal is switched, so use an unintended lamp color combination. become. By delaying the time point when the simulation signal is generated and output, it is possible to determine the normality / abnormality of the prohibition state detection unit using the intended combination of lamp colors.

In the fourth invention , the seventh invention, or the eleventh invention , the factor determination unit determines that the light colors of at least two signal lamps are simultaneously based on the simulated signal and / or the lamp color output state acquired from the blue monitoring unit. Based on the time of blue (prohibited combination of blue), it is determined whether or not the factor that causes the lamp color to be blue simultaneously is due to the simulated signal.

  For example, when it is determined that the blue color is simultaneous blue based on the lamp color output state and the simulation signal, the signal length of the prohibition state signal (blue-blue abnormality signal) is determined by the length of the simulation signal, and is about 10 ms, for example. On the other hand, when it is determined that the lamp color output states are simultaneously blue, the signal length of the prohibition state signal (blue-blue abnormality signal) becomes long because it is an abnormality due to an actual failure rather than a simulation. Therefore, when the prohibition state signal is short, it can be determined that it is due to a simulated signal, and when the prohibition state signal is long, it can be determined that it is due to an actual failure. As a result, it is possible to determine at any time whether the cause of the simultaneous blue is due to the simulated signal or the actual failure. For example, during normal operation of the traffic signal controller, normal / abnormal due to the simulated signal It is not necessary to provide an occupancy time or the like for performing the determination, and it is possible to determine normality / abnormality of the prohibited state detection unit while performing actual blue-blue abnormality detection.

In the twelfth invention, the determination unit is prohibited based on the simulation signal output from the blue monitoring unit and / or the blue monitoring signal in the lamp color output state and the prohibition state signal output from the prohibition state detection unit. Determine whether the state detector is normal or abnormal. For example, when the blue monitoring signal is simultaneous blue (prohibited combination blue) and the prohibition state signal is not simultaneous blue (prohibited combination blue), it is determined that the prohibition state detection unit is abnormal. . Further, when the blue monitoring signal is not simultaneous blue and the prohibition state signal is simultaneous blue, it is determined that the prohibition state detection unit is abnormal. Thereby, the abnormality of a prohibition state detection part can be pinpointed correctly.

In the thirteenth invention, the self-diagnostic unit outputs the simulation signal when the generation unit generates a simulation signal in which the color of at least two signal lamps is simultaneously blue (prohibited combination of blue). When the simulated signal and / or the lamp color output state (blue output monitor) indicate that the lamp colors of at least two signal lamps are not simultaneously blue (prohibited combination of blue), an abnormality is diagnosed. For example, if the light color output state of one signal lamp is blue when the generation unit generates and outputs a simulation signal that simulates the color of another signal lamp in blue, the blue monitoring unit The blue output monitor should be output, but if the simulated signal or lamp color output state output by the blue monitoring unit is not blue at the same time, the blue monitoring unit is abnormal, or Diagnosing an abnormality in the lamp color output state acquired by the blue monitoring unit, that is, an abnormality in a signal line that transmits the lamp color output state or a circuit that outputs the lamp color output state (for example, a lamp color output circuit). Can do.

In the fourteenth invention, the notifying unit notifies the abnormality information indicating the abnormality of the prohibited state detecting unit to the outside. For example, the notification unit can notify an abnormality of the prohibition state detection unit to an external host device using a communication line, or turns on or blinks an indicator lamp provided in the traffic signal controller, etc. You can be notified. Thereby, when abnormality of a prohibition state detection part occurs, abnormality can be conveyed quickly.

  According to the present invention, by comparing the simulation signal generated and output by the generation unit with the prohibition state signal output by the prohibition state detection unit, the state in which the combination of the lamp colors of the signal lamp is prohibited is detected. Therefore, it is possible to determine normality / abnormality of the prohibition state detection unit.

It is a block diagram which shows an example of a structure of the traffic signal controller which concerns on this Embodiment. It is a schematic diagram which shows an example of the intersection where the signal light device controlled by the traffic signal controller which concerns on this Embodiment was installed. It is explanatory drawing which shows the state of the simultaneous blue where the combination of the color of each signal lamp was prohibited. It is explanatory drawing which shows the relationship between the step of the lamp color of each signal lamp device, and a simulation signal output. It is explanatory drawing which shows an example which determines the normal / abnormality of the blue-blue detection circuit. It is explanatory drawing which shows the example of determination in the case of using a simulation signal. It is explanatory drawing which shows the example of determination when not using a simulation signal. It is explanatory drawing which shows an example of the determination method of the factor by which a blue-blue abnormality signal turns on. It is explanatory drawing which shows an example of the production | generation time of a simulation signal. It is a flowchart which shows the procedure of the normal / abnormal determination process in the case of using a simulation signal. It is a flowchart which shows the procedure of the normal / abnormal determination process when not using a simulation signal. It is a block diagram which shows the structural example of the conventional traffic signal controller.

  Hereinafter, a traffic signal controller according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of the traffic signal controller 100 according to the present embodiment. The traffic signal controller 100 includes a control unit 10, a logical sum circuit 20, a blue-blue detection circuit 30, a light color output circuit 40, an interface unit 50, a notification unit 60, present data 70, and the like. The control unit 10 includes a generation unit 11, a determination unit 12, and the like.

  The control unit 10 outputs a lamp color signal for switching the lamp color of each signal lamp 1 to the lamp color output circuit 40 based on the display data 70.

  The display data 70 includes, for example, lamp color information indicating the state of each lamp color (lit or extinguished) for each step, the order of the lamp colors, the reference display seconds (reference display time) of each step, and the shortest display seconds ( Each information includes information such as the shortest display time, the longest display seconds (the longest display time), the type of floor (for example, indicating the category of long, middle, short, etc.), security seconds, and operation settings.

  The lamp color output circuit 40 converts the lamp color signal output from the control unit 10 into AC 100 V or a predetermined voltage for driving the signal lamp 1, and turns on the lamp or LED (light emitting diode) of the signal lamp 1. Further, the lamp color output circuit 40 is a blue output state (lamp color output state) which is a signal indicating whether or not a predetermined voltage such as AC100V for driving the blue lamp of each signal lamp device 1 is output to each signal lamp device 1. ) Is output to the OR circuit 20. That is, when 100 VAC or the like is output to the drive line (power supply line) for driving the blue lamp of the signal lamp 1, the blue output state of the signal lamp 1 is turned on (or present). Therefore, in the case of FIG. 2, the blue output state has a total of six information amounts, three on the main road side and three on the secondary road side.

  The generation unit 11 generates a simulation signal (also referred to as a simulated blue signal) for simulating a state where the combination of the lamp colors of each signal lamp device 1 is prohibited, and outputs the simulation signal to the OR circuit 20. The simulated signal also has the same amount of information as the blue output state. The state in which the combination of the lamp colors of each signal lamp 1 is prohibited refers to, for example, a blue-blue state in which the lamp color of the signal lamp 1 for each of the intersecting roads is simultaneously blue (prohibited combination blue). Hereinafter, the state where the combination of the lamp colors of each signal lamp device 1 is prohibited will be described. In the present embodiment, simultaneous blue means a combination of blue in which lamp colors are prohibited.

  FIG. 2 is a schematic diagram showing an example of an intersection where the signal lamp 1 controlled by the traffic signal controller 100 according to the present embodiment is installed. As shown in FIG. 2, at the intersection, the main road and the secondary road intersect. The color of the signal lamp 1 for the main road is 1G (blue) and 1A (blue arrow on the right). Moreover, the light color of the signal lamp 1 with respect to a secondary road is 2G (blue) and 2A (blue arrow of the right turn). The pedestrian signal lamp 1 for the pedestrian crossing crossing the secondary road is 1PG (step blue), and the pedestrian signal lamp 1 for the pedestrian crossing crossing the main road is 2PG (step blue). Note that the number of roads intersecting the intersection and the color of the signal lamp 1 are merely examples, and are not limited to the example of FIG. In the present embodiment, the signal lamp 1 also includes a vehicle signal lamp and a pedestrian signal lamp. The light blue includes straight blue, left turn blue arrow, right turn blue arrow, and pedestrian blue.

  FIG. 3 is an explanatory diagram showing a simultaneous blue state in which the combination of the lamp colors of each signal lamp is prohibited. In FIG. 3, the symbol O indicates a state where the combination of lamp colors is permitted, and the symbol N indicates a prohibited state. Moreover, the example of FIG. 3 shows the combination of the lamp colors of the signal lamp device 1 shown in FIG. As shown in FIG. 3, the main road lamp color 1G (blue) is allowed to be turned on simultaneously with the main road lamp color 1PG (step blue). However, the light color 1G (blue) of the main road should be lit simultaneously with any of the light color 1A (blue arrow) of the main road, 2G (blue), 2PG (step blue) or 2A (blue arrow) of the secondary road. Is forbidden.

  Similarly, the light color 1PG (blue) of the main road is allowed to be turned on simultaneously with the light color 1G (blue) of the main road, but the light color 1A (blue arrow) of the main road and 2G of the secondary road It is prohibited to turn on both (blue), 2PG (step blue), and 2A (blue arrow) at the same time.

  Similarly, the light color 1A (blue arrow) of the main road is 1G (blue), 1PG (blue), 2G (blue), 2PG (blue), or 2A (blue arrow) of the secondary road. It is prohibited to turn on any of these simultaneously. The same applies to the light colors 2G (blue), 2PG (step blue), and 2A (blue arrow) of the secondary road.

  Further, the combination of the light color of the main road and the light color of the secondary road is divided into C1 to C6 as shown in FIG. The timing at which the combination of the lamp colors shown in the sections C1 to C6 is determined will be described later.

  The generation unit 11 simulates the simultaneous blue in which the combination of the lamp colors is prohibited by the simulated signal (simulated blue signal) and the blue output state output from the lamp color output circuit 40, and the combination of the lamp colors can be determined only by the simulated signal. Simulate forbidden simultaneous blue. Even when the generation unit 11 generates a simulation signal and does not output it to the OR circuit 20, the combination of the lamp colors is prohibited only in the blue output state output by the lamp color output circuit 40. In this case, a failure has actually occurred in the traffic signal controller 100, indicating an actual failure state rather than a simulation.

  The logical sum circuit 20 acquires the simulated signal generated by the generation unit 11 and / or the lamp color output state output by the lamp color output circuit 40, and when the acquired lamp color output state is blue (blue output state), It has a function as a blue monitoring unit that outputs the lamp color output state (that is, the blue output state) and / or the acquired simulation signal to the blue-blue detection circuit 30. In other words, in the case of FIG. 2, six signal lines 1G, 1PG, 1A, 2G, 2PG, and 2A of the lamp color output circuit 40 and 6G of simulated signals 1G, 1PG, 1A, 2G, 2PG, and 2A are used. The signal lines are input to the OR circuit 20, and the signal line signal of the lamp color output circuit 40 and the simulated signal line signal are logically output for each of 1G, 1PG, 1A, 2G, 2PG, and 2A. To be summed.

  The blue lamp color output state (blue output state) and the simulation signal output from the OR circuit 20 to the blue-blue detection circuit 30 are also referred to as a blue output monitor (blue monitoring signal). That is, the OR circuit 20 acquires a simulated signal that simulates a state in which the signal lamp 1 is blue and / or a lamp color output state (blue output state) in which the signal lamp 1 is blue. And output to the blue-blue detection circuit 30 as a blue output monitor. Further, the OR circuit 20 outputs a blue output monitor to the control unit 10.

  In the example of FIG. 1, the OR circuit 20 can be omitted. In this case, the simulation signal generated by the generation unit 11 may be output to the blue / blue detection circuit 30 and the blue output state output from the lamp color output circuit 40 may be output to the blue / blue detection circuit 30. Moreover, what is necessary is just to output a simulation signal and a blue output state to the control part 10 as a blue output monitor.

  The blue-blue detection circuit 30 is a blue-blue abnormality signal (prohibited state) indicating whether or not a combination of lamp colors is prohibited according to the lamp color output state of each signal lamp 1 or the simulation signal generated by the generating unit 11. Signal) to function as a prohibited state detector.

  The blue-blue detection circuit 30 is a signal indicating whether or not a lamp color output state of each signal lamp 1 (for example, a predetermined voltage such as AC100V for driving the signal lamp is being output to the signal lamp, and is also referred to as a blue output state. ) And / or according to the simulation signal generated by the generation unit 11 (that is, only the lamp color output state, only the simulation signal, or the combination of the lamp color output state and the simulation signal), the combination of the lamp colors is prohibited. An inhibition state signal (also referred to as a blue-blue abnormality signal) indicating whether or not the state has been set is output.

  More specifically, the blue-blue detection circuit 30 acquires the blue output monitor output from the OR circuit 20 and determines whether or not it is in the simultaneous blue state. Is output to the control unit 10.

  The determination unit 12 outputs the simulation signal generated by the generation unit 11, the lamp color output state output by the lamp color output circuit 40, the blue / blue abnormality signal (prohibition state signal) output by the blue / blue detection circuit 30, and the OR circuit 20. Normality / abnormality of the blue / blue detection circuit 30 or the like is determined based on a blue output monitor or the like. For example, the generation unit 11 generates a simulation signal so that the blue-blue detection circuit 30 outputs a blue-blue abnormality signal (prohibition state signal) indicating that the combination of lamp colors is prohibited, and the OR circuit 20 When only the simulation signal is output to the blue-blue detection circuit 30 via the blue-blue detection circuit 30, if the blue-blue detection circuit 30 is normal, the blue-blue detection circuit 30 indicates that the combination of lamp colors is prohibited. When the blue-blue detection circuit 30 does not output a blue-blue abnormality signal, it can be determined that the blue-blue detection circuit 30 is abnormal. Therefore, the abnormality of the blue-blue detection circuit 30 can be specified accurately.

  Further, since the logical sum circuit 20 is provided, the simulation signal generated by the generation unit 11 is output to the logical sum circuit 20 so that it is not reflected in the lamp color display of the signal lamp. Even during normal operation of switching the lamp color of the traffic light, it is possible to artificially create a blue-blue state in which the lamp color of the signal lamp device 1 becomes blue at the same time using the simulated signal. The normality / abnormality of the blue-blue detection circuit 30 can be determined simultaneously with the operation.

  Next, a method for simulating the simultaneous blue state of the lamp color based on the simulation signal (simulation blue signal) will be described. There are two methods (patterns) for simulating the simultaneous blue state of the lamp color by the simulated signal (simulated blue signal). In the first method (first pattern), a simulation signal is generated to simulate a state in which the light color of another signal light device 1 is blue at the timing when the light color of an arbitrary signal light device 1 is blue. Simultaneous blue is simulated by an actual lamp color signal and a simulation signal.

  The second method (second pattern) is a case in which a simulation signal that simulates a simultaneous blue state is generated at a timing when none of the color of each signal lamp 1 is blue. Simulate. Hereinafter, each case will be described.

  FIG. 4 is an explanatory diagram showing the relationship between the step of the lamp color of each signal lamp device 1 and the simulated signal output. FIG. 4 shows a state of switching of the color (signal light) of each signal lamp 1 for each step (floor). In the figure, the horizontal line represents blue, the arrow in the circle represents a blue arrow, F in the circle represents flash (flashing), the double line represents red, and the broken line represents yellow. The lamp colors 1G, 1PG, 2G, and 2PG are originally blue, but are described including yellow (Y) and red (R) for convenience. In the simulated signal output, P1 represents the first pattern described above, P2 represents the second pattern, and the horizontal line represents that no simulated signal is output. In addition, it is shown in which step (floor) the lamp color combinations C1 to C6 shown in FIG. 3 are determined. In steps 1 to 14, the lamp color display time varies depending on the step, but in FIG. 4, the display time is not taken into account for simplification.

  As shown in FIG. 4, in step 3, the lamp color combination C1 shown in FIG. 3 is used. That is, in step 3, the lamp color 1G is blue, and the lamp colors of the signal lamps of lamp colors 1PG, 2G, and 2PG are red, and 1A and 2A are off. Therefore, a simulation signal is output in order to simulate the simultaneous blue state together with the lamp color 1G. That is, in the period of step 3, the generation unit 11 sequentially generates and outputs a simulation signal as if the lamp colors 1PG, 2G, 2PG, 1A, and 2A are blue. For example, if the time of step 3 is 2 seconds and the signal length (pulse width) of the simulation signal is 10 ms, each of the lamp colors 1PG, 2G, 2PG, 1A, and 2A is blue during the period of step 3. The state can be simulated multiple times.

  Steps 5, 10, and 12 use the first pattern as in step 3. In steps 5, 10, and 12, the combination of lamp colors C3, C4, and C6 is used. That is, since one lamp color is blue, a simulation signal is output to simulate the simultaneous blue state together with the blue lamp color.

  In step 4, the lamp color combination C2 shown in FIG. 3 is used. When the combination of lamp colors is C2, only 1PG (step blue) does not turn blue alone, so the timing of step 4 is used to simulate the simultaneous blue state only by the simulation signal. The same applies to steps 6 and 7. In step 4, the lamp color of the signal lamp with the lamp color 1G is yellow, and the lamp colors of the signal lamps with the lamp colors 1PG, 2G, and 2PG are red, and 1A and 2A are off. That is, none of the color of each signal lamp is blue. Therefore, a simulation signal is output in order to simulate a state in which two lamp colors for which the simultaneous blue state is prohibited are simultaneously blue. That is, during the period of step 4, the generation unit 11 generates and outputs a simulation signal that simulates a prohibited combination of lamp colors as shown in FIG. For example, a simulation signal is generated and output so that 1G and 2G are blue.

  Steps 6 and 7 use the second pattern as in step 4. That is, since none of the lamp colors is blue, the simultaneous blue state is simulated only by the simulation signal.

  Further, when the combination of lamp colors is C5, only 2PG (step blue) does not turn blue alone, so the timing of step 11 is used to simulate the simultaneous blue state only by the simulation signal. The same applies to steps 13 and 14. Steps 11, 13, and 14 use the second pattern in the same manner as step 4. That is, since none of the lamp colors is blue, the simultaneous blue state is simulated only by the simulation signal.

  When none of the color of each signal lamp 1 is blue as in the second pattern described above, the generation unit 11 simulates a state in which the lamp color of at least two signal lamps of the signal lamp 1 is blue. Generate a simulated signal. Since none of the lamp colors of each signal lamp 1 is blue, the OR circuit 20 acquires only a simulated signal as a signal whose lamp color of the signal lamp is blue, and the blue output monitor has only the simulated signal. Consists of.

  In the example of FIG. 4, the case where both the first pattern P1 and the second pattern P are used has been described, but normal / abnormal determination is performed using only the second pattern P2 without using the first pattern P1. Also good.

  The determination unit 12 determines normality / abnormality of the blue-blue detection circuit 30 based on the blue output monitor (blue monitoring signal) output from the OR circuit 20 and the blue-blue abnormality signal output from the blue-blue detection circuit 30.

  FIG. 5 is an explanatory diagram showing an example of determining whether the blue-blue detection circuit 30 is normal or abnormal. As shown in FIG. 5, when the blue output monitor is simultaneously blue, it is determined that the blue-blue detection circuit 30 is normal when the blue-blue abnormality signal is on, and the blue-blue detection circuit 30 is abnormal when the blue-blue abnormality signal is off. It is determined that If the blue output monitor is not simultaneously blue, the blue / blue detection circuit 30 is determined to be abnormal when the blue / blue abnormality signal is on, and the blue / blue detection circuit 30 is determined to be normal when the blue / blue abnormality signal is off. Thereby, the abnormality of the blue-blue detection circuit 30 can be specified accurately.

  In order to simulate simultaneous blue, when only the simulation signal is output to the blue-blue detection circuit 30 via the logical sum circuit 20, the blue-blue detection circuit 30 outputs a blue-blue abnormality signal (simultaneous blue state inhibition state signal). If not, it can be determined that the blue-blue detection circuit 30 is abnormal. On the other hand, when both the simulation signal and the lamp color output state are output to the blue-blue detection circuit 30, the blue-blue detection circuit 30 does not output a blue-blue abnormality signal (a prohibition state signal in the simultaneous blue state). In addition to 30, an abnormality of the lamp color output circuit 40 can also be detected.

  That is, as in the first pattern described above, when the light color of one signal light device 1 is blue, the generation unit 11 has a blue light color of the signal light device 1 different from the one signal light device 1. A simulation signal for simulating the state is generated. For example, the logical sum circuit 20 acquires a blue output state (lamp color output state) in which the lamp color of the signal lamp 1 is blue, and a simulation signal that simulates the lamp color of another signal lamp 1 in blue. When output to the blue-blue detection circuit 30 as an output monitor, when the blue-blue detection circuit 30 outputs a blue-blue abnormality signal (a prohibition state signal indicating a simultaneous blue state), it can be determined that the blue-blue detection circuit 30 is normal. In addition, when the blue-blue detection circuit 30 does not output a blue-blue abnormality signal, not only the abnormality of the blue-blue detection circuit 30, but also a signal line (for example, the light-color output circuit 40 and the OR circuit 20) through which the light-color output state is transmitted. (Transmission line between the two) can be determined at the same time, and it is possible to extract a portion estimated to be faulty without omission.

  Next, a determination example by the determination unit 12 will be described. The determination by the determination unit 12 is a determination when a simulated signal is used, that is, when a failure diagnosis is performed by creating a simulated blue state and when a simulated signal is not used, that is, whether there is an actual simultaneous blue. There is a case to judge.

  FIG. 6 is an explanatory diagram showing an example of determination when a simulated signal is used. As shown in FIG. 6, the determination is divided according to whether the blue output monitor is simultaneous blue or not and whether the blue-blue abnormal signal is on or off. For example, when the blue output monitor is simultaneously blue and the blue-blue abnormality signal is on, it can be determined that the blue-blue detection circuit 30 is normal, and the flashing of the signal lamp 1 is not performed.

  Further, when the blue output monitor is simultaneously blue and the blue-blue abnormality signal is off, the blue-blue detection circuit 30 can determine that it is abnormal, and the signal lamp device 1 performs flash display.

  In addition, when the blue output monitor is not simultaneous blue and the blue-blue abnormal signal is on or off, the blue output is generated even though the simulation signal is output from the generation unit 11 to the logical sum circuit 20 to simulate the simultaneous blue. The reason why the monitor is not simultaneously blue is that the preceding circuit including the OR circuit 20 or the transmission line is considered to be broken. Therefore, it is determined that the traffic signal controller 100 is abnormal, and the flashing display of the signal lamp 1 is performed.

  In other words, the determination unit 12 generates at least two signal lamps when the generation unit 11 generates a simulation signal in which the lamp colors of at least two signal lamps 1 are simultaneously blue. When the light color of 1 indicates that it is not blue at the same time, it is diagnosed as abnormal. For example, the generation unit 11 generates a simulation signal that simulates the light color of another signal light device 1 in blue at the timing when the blue output state (light color output state is blue) of one signal light device 1 is output. The OR circuit 20 should output a blue output monitor indicating simultaneous blue. However, if the blue output monitor output by the OR circuit 20 is not simultaneous blue, the OR circuit 20 is abnormal. Alternatively, the abnormality of the blue output state acquired by the logical sum circuit 20, that is, the abnormality of the signal line transmitting the blue output state or the lamp color output circuit outputting the blue output state can be diagnosed.

  FIG. 7 is an explanatory diagram showing an example of determination when a simulated signal is not used. As shown in FIG. 7, the determination is divided according to whether the blue output monitor is simultaneous blue or not and whether the blue-blue abnormal signal is on or off. For example, when the blue output monitor is simultaneous blue and the blue-blue abnormality signal is on, it can be determined that the blue-blue detection circuit 30 is normal, and the actual lamp color is in the simultaneous blue state (actual rather than simulation). At the same time, the signal lamp 1 is flashed.

  Further, when the blue output monitor is simultaneous blue and the blue-blue abnormality signal is off, the blue-blue detection circuit 30 can determine that it is abnormal, and the actual lamp color is in the simultaneous blue state (actual rather than simulation). At the same time, the signal lamp 1 is flashed.

  When the blue output monitor is not simultaneously blue and the blue-blue abnormality signal is on, the blue-blue detection circuit 30 can determine that it is abnormal, and the signal lamp device 1 performs flash display. In this case, a failure of the blue-blue detection circuit 30 can be found in advance without using a simulation signal.

  When the blue output monitor is not simultaneous blue and the blue-blue abnormality signal is off, the blue-blue detection circuit 30 can determine that it is normal and the actual lamp color is not in the simultaneous blue state. 1 is not flashed.

  Next, factors that turn on the blue-blue abnormality signal will be described. There are two factors that cause the blue-blue anomaly signal to turn on, for example, one is when the simulated blue color is simulated by the simulated signal, and the other is when the failure actually occurs and the blue color is turned into the simultaneous blue. . Therefore, a method for determining the cause of turning on the blue / blue abnormality signal will be described.

  FIG. 8 is an explanatory diagram showing an example of a method for determining a factor that turns on the blue-blue abnormality signal. As shown in FIG. 8, when the blue lamp of the signal lamp 1 is lit, the lamp color output circuit 40 outputs blue (1G), which is the blue output state, to the OR circuit 20. In addition, blue (1G) which is a blue output state is output while the lamp color 1G is lit. The generation unit 11 generates the simulation signals 2G, 2PG, 2A, and 1A with an appropriate time in order to simulate the simultaneous blue state of the lamp colors, and outputs them to the OR circuit 20. The signal length of each simulation signal is, for example, about 10 ms.

  The OR circuit 20 outputs a blue output monitor indicating simultaneous blue to the blue-blue detection circuit 30 when blue (1G) and the simulation signal 2G are input, and the blue-blue output detection circuit 30 turns on the blue-blue abnormality signal. (Output blue / blue abnormal signal). The signal length T1 of the blue-blue abnormal signal is a time length during which both blue (1G) and the simulation signal 2G are input. If the signal length of the simulation signal is about 10 ms, the signal length T1 is also about 10 ms. Similarly, during the time when both blue (1G) and simulation signal 2PG are input, a blue-blue abnormal signal (signal length T2) is output. The signal lengths T1 and T2 may be the same value or different values, and depend on the simulated signal length.

  On the other hand, when the lamp color output circuit 40 outputs blue (1G), which is in the blue output state, to the OR circuit 20, a failure actually occurs for some reason and is different from the signal lamp 1 described above. When the blue lamp (for example, 2G) of the signal lamp device 1 is erroneously turned on, the lamp color output circuit 40 outputs blue (2G) which is a blue output state regardless of the presence or absence of the simulation signal.

  The OR circuit 20 outputs a blue output monitor indicating simultaneous blue to the blue-blue detection circuit 30 when blue (1G) and blue (2G) are input, and the blue-blue output detection circuit 30 turns on the blue-blue abnormality signal. (A blue-blue anomaly signal is output). In this case, since the signal length of the blue-blue abnormality signal is not an abnormality due to an actual failure but a simulation, it is longer than the signal lengths T1 and T2 in the case of the simulation signal, for example, a time exceeding 200 ms.

  The blue-blue detection circuit 30 acquires a blue output monitor from the OR circuit 20 and outputs a blue-blue abnormality signal to the determination unit 12. Based on the time when the blue-blue abnormal signal output from the blue-blue output circuit 30 is on (the time when the light color of at least two signal lamps is prohibited), the determination unit 12 simultaneously determines that the light color is blue. It is determined whether or not the cause is due to the simulated signal. For example, based on the time when the blue-blue abnormal signal is on and the predetermined threshold value T3, it is determined whether or not the factor that causes the lamp color to be blue simultaneously is due to the simulated signal. For example, the predetermined threshold T3 can be about 200 ms.

  For example, when the blue output state (lamp color output state) and the simulation signal are determined to be simultaneous blue, the signal length of the blue-blue abnormal signal is determined by the length of the simulation signal, and is, for example, about 10 ms. On the other hand, when it is determined that the blue output states are simultaneously blue, it is an abnormality due to an actual failure rather than a simulation, so that the signal length of the blue-blue abnormality signal becomes long. Therefore, the signal length of the blue-blue anomaly signal is compared with a predetermined threshold, and if the blue-blue anomaly signal is shorter than the threshold, it can be determined that it is due to a simulated signal, and if the blue-blue anomaly signal is longer than the threshold, It can be determined that this is due to an actual failure. In the example of FIG. 8, the signal length of the blue / blue abnormal signal by the simulation signal is T1 and T2, and both are shorter than the threshold value T3. On the other hand, the blue-blue abnormality signal due to an actual failure is longer than the threshold value T3. Thus, it can be determined at any time whether the cause of the simultaneous blue is due to the simulated signal or the actual failure. For example, during normal operation of the traffic signal controller 100, normal / It is not necessary to provide an occupancy time for performing abnormality determination, and the normal / abnormality of the blue-blue detection circuit 30 can be determined while performing actual blue-blue abnormality detection.

  Next, simulation signal generation and output timing will be described. FIG. 9 is an explanatory diagram showing an example of the generation time of the simulation signal. FIG. 9 shows a state in which the lamp color of the signal lamp 1 is switched to Step 4, Step 5, and Step 6, for example. As shown in FIG. 9, for example, in step 5, the traffic light controller 100 lights the blue arrow with the lamp color signal, blue arrow (1A), which is generated to control the lamp color of the signal lamp 1. Suppose that the light goes out when switching.

  The lamp signal generated by the traffic signal controller 100 to control the lamp color of the signal lamp 1 is converted into a predetermined voltage such as AC100V in order to drive the signal lamp 1, but the presence or absence of the voltage is determined. The switching of the output blue output state (lamp color output state) is delayed by a delay time ΔT compared to the lamp color switching time of the lamp color signal. The delay time ΔT is, for example, about 2 to 30 ms.

  For this reason, as shown in FIG. 9, when the simulated signal 2G is generated at the time t1 when the lamp color of the signal lamp is switched, the blue output state (lamp color output state) is the lamp color before the lamp signal is switched ( In step 5, the combination of unintended lamp colors is used, and a blue-blue abnormality signal is erroneously output.

  The generation unit 11 simulates a state in which the lamp color of the signal lamp 1 other than the one signal lamp 1 is blue after a predetermined time (delay time ΔT) has elapsed since the lamp color of the signal lamp 1 is switched. Generate a simulated signal. The predetermined time can be, for example, about 2 to 30 ms. By delaying the time point when the simulated signal is generated and output, the intended combination of lamp colors is used to prevent the blue / blue abnormality signal from being erroneously output and to determine whether the blue / blue detection circuit 30 is normal / abnormal. be able to.

  The interface unit 50 has a communication function with the host device 300 in the external control center.

  The notification unit 60 includes a display unit such as an LED, and notifies abnormality information indicating abnormality such as the blue-blue detection circuit 30 to the outside. For example, the notification unit 60 can notify an abnormality of the blue-blue detection circuit 30 to the external higher-level device 300 using the communication line via the interface unit 50. Further, the notification unit 60 can notify the abnormality by turning on or blinking an indicator lamp or the like. As a result, when an abnormality occurs in the blue-blue detection circuit 30, the abnormality can be quickly transmitted.

  Next, a normal / abnormal determination method by the traffic signal controller 100 of the present embodiment will be described. FIG. 10 is a flowchart showing the procedure of normal / abnormal determination processing when a simulated signal is used. The control unit 10 outputs a simulation signal that simulates the state in which the lamp color is simultaneously blue (S11), and determines whether or not the blue output monitor output from the OR circuit 20 indicates simultaneous blue (S12).

  When the blue output monitor is simultaneous blue (YES in S12), the control unit 10 determines whether or not the blue-blue abnormality signal output from the blue-blue detection circuit 30 is on (S13), and the blue-blue abnormality signal is not on. In the case (NO in S13), it is determined that the blue / blue detection circuit is abnormal (S14), the signal lamp 1 is flashed (S15), and the process is terminated.

  If the blue-blue abnormality signal is on (YES in S13), the control unit 10 determines that the blue-blue detection circuit 30 is normal (S16) and ends the process. When it is determined that the blue-blue detection circuit 30 is normal, the control unit 10 can also repeat the processes after step S11 after a predetermined time has elapsed. That is, it is possible to repeatedly determine whether the blue / blue detection circuit 30 is normal / abnormal by generating and outputting a simulation signal a plurality of times during one step (step).

  When the blue output monitor is not simultaneously blue (NO in S12), the control unit 10 performs self-diagnosis, for example, that there is an abnormality in the OR circuit 20 or the preceding circuit of the OR circuit 20 (S17). Process.

  FIG. 11 is a flowchart showing the procedure of normal / abnormal determination processing when a simulated signal is not used. The control unit 10 determines whether or not the blue output monitor output from the OR circuit 20 indicates simultaneous blue (S21). If the blue output monitor is simultaneous blue (YES in S21), the blue-blue detection circuit 30 It is determined whether or not the blue / blue abnormality signal to be output is ON (S22).

  If the blue-blue abnormality signal is on (YES in S22), the control unit 10 determines that the blue-blue detection circuit 30 is normal (S23), and determines that the lamp color is in the simultaneous blue state (S24), that is, Then, the traffic light controller 100 is actually faulted, and the signal lamp 1 is flashed on the assumption that a simultaneous blue state which is originally prohibited is generated (S25), and the process is terminated.

  If the blue-blue abnormality signal is not on (NO in S22), the control unit 10 determines that the blue-blue detection circuit is abnormal (S26), flashes the signal lamp 1 (S27), and ends the process.

  When the blue output monitor is not simultaneously blue (NO in S21), the control unit 10 determines whether or not the blue-blue abnormality signal output from the blue-blue detection circuit 30 is on (S28), and the blue-blue abnormality signal is on. If so (YES in S28), the process of step S26 is performed.

  When the blue-blue abnormality signal is not on (NO in S28), the control unit 10 determines that the blue-blue detection circuit is normal (S29), and determines that the color of the signal lamp 1 is not the simultaneous blue state (S30). The process is terminated.

  In the above-described embodiment, when it is determined that the blue-blue detection circuit or the like is abnormal, the date and time when the abnormality is determined can be recorded. The date and time when the blue / blue detection circuit or the like is determined to be normal may be recorded. By recording normality or abnormality of the blue-blue detection circuit or the like, it can be used as information for identifying the cause of the failure of the blue-blue detection circuit or the like.

  In the above-described embodiment, the intersection where the main road and the secondary road intersect has been described as an example. However, the present invention is not limited to the intersection where the main road and the secondary road intersect. The traffic signal controller 100 of the embodiment can be applied.

  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 control unit 11 generation unit 12 determination unit (determination unit, factor determination unit, self-diagnosis unit)
20 OR circuit (blue monitor)
30 Blue-blue detection circuit (prohibited state detector)
40 Light color output circuit 50 Interface unit 60 Notification unit 70 Display data

Claims (14)

In a traffic signal controller that includes a lamp color output circuit that outputs a predetermined voltage to drive a plurality of signal lamps exceptionally, and switches the lamp color of each signal lamp unit ,
The lamp color output circuit is
A lamp color output state is output as a signal indicating whether or not the voltage is output to each signal lamp,
In addition to the lamp color output state output by the lamp color output circuit, a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited is not reflected in the lamp color display of each signal lamp. A generating unit to generate;
Depending on the simulated signal generated by the light color output state and / or the generator, and the prohibition state detector in which a combination of light color outputs an inhibit state signal indicating whether or not the state is prohibited,
A traffic signal comprising: a determination unit that determines normality / abnormality of the prohibition state detection unit based on a simulation signal generated by the generation unit and / or a prohibition state signal output by the prohibition state detection unit Control machine. In a traffic signal controller that switches the color of multiple signal lamps,
A generator for generating a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited;
A prohibition state detection unit that outputs a prohibition state signal indicating whether or not a combination of lamp colors is prohibited in accordance with the lamp color output state of each signal lamp and the simulation signal generated by the generation unit;
A determination unit for determining normality / abnormality of the prohibition state detection unit based on the simulation signal generated by the generation unit and / or the prohibition state signal output by the prohibition state detection unit;
With
The generator is
When none of the signal colors of each signal lamp is blue, it is configured to generate a simulation signal that simulates a state where at least two of the signal lamps are blue. that exchange communication signal control machine. In a traffic signal controller that switches the color of multiple signal lamps,
A generator for generating a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited;
A prohibition state detection unit that outputs a prohibition state signal indicating whether or not a combination of lamp colors is prohibited in accordance with the lamp color output state of each signal lamp and the simulation signal generated by the generation unit;
A determination unit for determining normality / abnormality of the prohibition state detection unit based on the simulation signal generated by the generation unit and / or the prohibition state signal output by the prohibition state detection unit;
With
The generator is
Generates a simulation signal that simulates a state in which the color of a signal lamp other than the one signal lamp is blue after a lapse of a predetermined time from the time when the lamp color of any one of the signal lamps is switched. A traffic signal controller configured as described above. In a traffic signal controller that switches the color of multiple signal lamps,
A generator for generating a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited;
A prohibition state detection unit that outputs a prohibition state signal indicating whether or not a combination of lamp colors is prohibited in accordance with the lamp color output state of each signal lamp and the simulation signal generated by the generation unit;
A determination unit for determining normality / abnormality of the prohibition state detection unit based on the simulation signal generated by the generation unit and / or the prohibition state signal output by the prohibition state detection unit;
The simulation signal generated by the generation unit and / or the lamp color output state of each signal lamp is acquired, and when the acquired lamp color output state is blue, the lamp color output state and / or the acquired simulation signal is prohibited. A blue monitor that outputs to the status detector
With
The prohibition state detection unit
Prohibition that the combination of lamp colors is prohibited when the simulated signal and / or lamp color output state acquired from the blue monitoring unit indicates that the lamp colors of at least two signal lamps are simultaneously blue. A status signal is output,
Further, based on the simulation signal and / or the lamp color output state acquired from the blue monitoring unit, the factor that the lamp color simultaneously becomes blue is simulated based on the time when the lamp colors of at least two signal lamps are simultaneously blue. A traffic signal controller comprising a factor determination unit for determining whether or not a signal is generated. The simulation signal generated by the generation unit and / or the lamp color output state of each signal lamp is acquired, and when the acquired lamp color output state is blue, the lamp color output state and / or the acquired simulation signal is prohibited. Provided with a blue monitoring unit that outputs to the state detection unit,
The prohibition state detection unit
Prohibition that the combination of lamp colors is prohibited when the simulated signal and / or lamp color output state acquired from the blue monitoring unit indicates that the lamp colors of at least two signal lamps are simultaneously blue. 4. The traffic signal controller according to claim 3, wherein the traffic signal controller is configured to output a status signal. The generator is
When the signal color of any one of the signal lamps is blue, a simulation signal that simulates a state in which the signal color of a signal lamp different from the one signal lamp is blue is generated. The traffic signal controller according to claim 4, wherein the traffic signal controller is provided. Based on the simulated signal and / or lamp color output state acquired from the blue monitoring unit, the factor that causes the lamp color to be blue simultaneously is based on the time when the lamp color of at least two signal lamps is simultaneously blue. The traffic signal controller according to claim 5, further comprising a factor determination unit that determines whether the object is a thing. The simulation signal generated by the generation unit and / or the lamp color output state of each signal lamp is acquired, and when the acquired lamp color output state is blue, the lamp color output state and / or the acquired simulation signal is prohibited. Provided with a blue monitoring unit that outputs to the state detection unit,
The prohibition state detection unit
Prohibition that the combination of lamp colors is prohibited when the simulated signal and / or lamp color output state acquired from the blue monitoring unit indicates that the lamp colors of at least two signal lamps are simultaneously blue. The traffic signal controller according to claim 1 or 2 , wherein the traffic signal controller is configured to output a status signal. The generator is
When the signal color of any one of the signal lamps is blue, a simulation signal that simulates a state in which the signal color of a signal lamp different from the one signal lamp is blue is generated. The traffic signal controller according to claim 8 , wherein the traffic signal controller is provided. The generator is
Generates a simulation signal that simulates a state in which the color of a signal lamp other than the one signal lamp is blue after a lapse of a predetermined time from the time when the lamp color of any one of the signal lamps is switched. The traffic signal controller according to claim 8 or 9 , wherein the traffic signal controller is configured as described above. Based on the simulated signal and / or lamp color output state acquired from the blue monitoring unit, the factor that causes the lamp color to be blue simultaneously is based on the time when the lamp color of at least two signal lamps is simultaneously blue. The traffic signal controller according to any one of claims 8 to 10, further comprising a factor determination unit that determines whether the object is a thing. The determination unit
Based on the simulation signal output from the blue monitoring unit and / or the blue monitoring signal in the lamp color output state and the prohibition state signal output from the prohibition state detection unit, the normality / abnormality of the prohibition state detection unit is determined. The traffic signal controller according to any one of claims 8 to 11 , wherein the traffic signal controller is configured as described above. When the generation unit generates a simulation signal in which the light colors of at least two signal lamps are simultaneously blue, the simulation signal and / or lamp color output state output by the blue monitoring unit is the light of at least two signal lamps The traffic signal controller according to any one of claims 8 to 12 , further comprising a self-diagnosis unit that diagnoses an abnormality when the colors indicate that the colors are not blue at the same time. The traffic signal controller according to any one of claims 1 to 13 , further comprising a notification unit that notifies the abnormality information indicating an abnormality of the prohibited state detection unit to the outside.

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