WO2013121512A1 - Traffic signal controller - Google Patents

Traffic signal controller Download PDF

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Publication number
WO2013121512A1
WO2013121512A1 PCT/JP2012/053316 JP2012053316W WO2013121512A1 WO 2013121512 A1 WO2013121512 A1 WO 2013121512A1 JP 2012053316 W JP2012053316 W JP 2012053316W WO 2013121512 A1 WO2013121512 A1 WO 2013121512A1
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WIPO (PCT)
Prior art keywords
blue
signal
lamp
state
output
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PCT/JP2012/053316
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French (fr)
Japanese (ja)
Inventor
正宏 三浦
下浦　弘
政広 坂口
弘明 川西
吉村　公志
Original Assignee
住友電気工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Priority to CN201280069770.0A priority Critical patent/CN104137165B/en
Priority to PCT/JP2012/053316 priority patent/WO2013121512A1/en
Publication of WO2013121512A1 publication Critical patent/WO2013121512A1/en

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

Definitions

  • 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 showing a configuration example of a conventional traffic signal controller 200.
  • 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.
  • a lamp color output state for example, AC 100 V or a predetermined voltage
  • 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.
  • 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.
  • 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.
  • the traffic signal controller is a traffic signal controller that switches the lamp colors of a plurality of signal lamps, and generates a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited And a prohibition state detection that outputs a prohibition state signal indicating whether or not a combination of the lamp colors is prohibited in accordance with a lamp color output state of each signal lamp and / or a simulation signal generated by the generation unit And a determination unit that determines 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. To do.
  • the traffic signal controller according to the second invention is the traffic signal controller according to the first invention, wherein the simulation 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 blue A blue monitoring unit that outputs the lamp color output state and / or the acquired simulated signal to the prohibited state detection unit, wherein the prohibited state detection unit outputs the simulated signal and / or lamp color output acquired from the blue monitoring unit.
  • the state indicates that the light colors of at least two signal lamps are blue at the same time, a prohibited state signal indicating that the combination of the light colors is prohibited is output. To do.
  • the traffic signal controller is the traffic signal controller according to the second aspect, wherein when the light color of each signal light device is not blue, the light color of at least two of the signal light devices is blue. It is configured to generate a simulation signal that simulates a certain state.
  • a traffic signal controller is the traffic signal controller according to the second invention or the third invention, 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 that simulates a state in which the color of another signal lamp is blue.
  • the traffic signal controller is the traffic signal controller according to the second or fourth aspect, wherein the generating unit is configured to switch the one of the signal lamps after a predetermined time has elapsed from when the lamp color of one of the signal lamps 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.
  • a traffic signal controller is the traffic signal controller according to the fourth or fifth aspect, wherein the light colors of at least two signal lamps are simultaneously based on the simulated signal and / or the light color output state acquired from the blue monitoring unit.
  • a factor determination unit is provided that determines whether or not the factor that causes the lamp color to become blue simultaneously is based on a simulated signal based on the time when it becomes blue.
  • the traffic signal controller is the traffic signal controller according to any one of the second to sixth aspects, wherein the determination unit is a simulated signal output from the blue monitoring unit and / or a blue color output state. 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 is the traffic signal controller according to any one of the second to seventh aspects, wherein the generation 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 is the traffic signal controller according to any one of the first to eighth aspects, further comprising a notification unit that notifies the abnormality information indicating the abnormality of the prohibited state detection unit to the outside. .
  • 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.
  • a simulation signal also referred to as a simulated blue signal
  • 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
  • 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.
  • the prohibition state detection unit 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.
  • the blue monitoring unit acquires the simulation signal generated by the generation unit and / or the lamp color output state of each signal lamp, and if the acquired lamp color output state is blue, the lamp color The 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.
  • 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.
  • 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 signal lamps 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.
  • the generation unit simulates a state in which the signal color of any one of the signal lamps is blue, and the lamp color of the signal lamp other than the one signal lamp is blue.
  • a simulation signal 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.
  • the detection unit 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.
  • the generator is configured such that after a predetermined time has elapsed from when the signal color of any one of the signal lamps is switched, the color of the signal lamp other than the one signal lamp is blue.
  • a simulation signal for simulating the state is generated.
  • the predetermined time can be about 2 to 30 ms, for example.
  • 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.
  • the lamp color output state is the lamp color before the lamp color signal is switched, so use an unintended lamp color combination. become.
  • the factor determination unit determines that the lamp colors of at least two signal lamps are simultaneously blue (a prohibited combination of blue based on the simulated signal and / or lamp color output state acquired from the blue monitoring unit. ), It is determined whether or not the cause that the lamp color simultaneously becomes blue is due to the simulated signal.
  • the signal length of the prohibition state signal (blue-blue abnormality signal) is determined by the length of the simulation signal, and is, for example, about 10 ms.
  • 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.
  • the determination unit is prohibited based on the simulated signal output from the blue monitoring unit and / or the blue monitoring signal in the lamp color output state and the prohibited state signal output from the prohibited 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.
  • the self-diagnosis unit outputs the simulation signal when the generation unit generates a simulation signal in which the light colors of at least two signal lamps are simultaneously blue (prohibited combination of blue).
  • the simulated signal and / or the lamp color output state blue output monitor
  • the lamp colors of at least two signal lamps are not simultaneously blue (prohibited combination of blue)
  • an abnormality is diagnosed.
  • the blue monitoring unit 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.
  • the notifying unit notifies the outside of the abnormality information indicating the abnormality of the prohibited state detecting unit.
  • 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 light 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.
  • 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.
  • 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 AC100V 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 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).
  • 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.
  • the color of the signal lamp 1 for the main road is 1G (blue) and 1A (blue arrow on the right).
  • 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).
  • 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.
  • the symbol O indicates a state where the combination of lamp colors is permitted
  • the symbol N indicates a prohibited state.
  • the example of FIG. 3 shows the combination of the lamp colors of the signal lamp device 1 shown in FIG.
  • the main road lamp color 1G (blue) is allowed to be turned on simultaneously with the main road lamp color 1PG (step blue).
  • 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.
  • 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.
  • 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.
  • 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 indicated by 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.
  • 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.
  • 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 2
  • the blue light 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.
  • the OR circuit 20 can be omitted.
  • 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.
  • 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
  • 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.
  • 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
  • the blue-blue detection circuit 30 indicates that the combination of lamp colors is prohibited.
  • 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.
  • the logical sum circuit 20 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.
  • a simulation blue signal simulating the simultaneous blue state of the lamp color using a simulation signal (simulation blue signal)
  • patterns for simulating the simultaneous blue state of the lamp color by the simulated signal (simulated blue signal).
  • 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 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.
  • 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.
  • FIG. 4 is an explanatory diagram showing the relationship between the step of the color of each signal lamp 1 and the output of the simulated signal.
  • FIG. 4 shows a state of switching of the color (signal light) of each signal lamp 1 for each step (floor).
  • 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
  • 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.
  • P1 represents the first pattern described above
  • P2 represents the second pattern
  • the horizontal line represents that no simulated signal is output.
  • step shows in which step (step) the lamp color combinations C1 to C6 shown in FIG. 3 are determined.
  • the lamp color display time varies depending on the step, but in FIG. 4, the display time is not taken into account for simplification.
  • 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.
  • 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.
  • 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.
  • Step 4 the lamp color combination C2 shown in FIG. 3 is used.
  • the combination of lamp colors is C2
  • only 1PG step blue
  • step 4 the timing of step 4 is used to simulate the simultaneous blue state only by the simulation signal.
  • 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.
  • step 11 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.
  • steps 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.
  • 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.
  • 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.
  • the blue output monitor 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.
  • the blue-blue detection circuit 30 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.
  • a blue-blue abnormality signal Simultaneous blue state inhibition state signal
  • the generation unit 11 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.
  • 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.
  • the blue-blue detection circuit 30 when 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.
  • 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.
  • 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.
  • the blue-blue detection circuit 30 can determine that it is abnormal, and the signal lamp device 1 flashes.
  • 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.
  • 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.
  • the generation unit 11 When the light color of 1 indicates that it is not blue at the same time, it is diagnosed as abnormal.
  • 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.
  • 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 a determination example 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.
  • 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.
  • the blue-blue detection circuit 30 can determine that it is abnormal, and the flashing of the signal lamp 1 is performed. In this case, a failure of the blue-blue detection circuit 30 can be found in advance without using a simulation signal.
  • 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.
  • the reason why the blue / blue anomaly signal is turned on will be described.
  • the blue-blue anomaly signal causes 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.
  • the lamp color output circuit 40 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.
  • 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.
  • 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.
  • 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.
  • 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).
  • 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.
  • the signal length of the blue-blue abnormality signal is determined by the length of the simulation signal, and is, for example, about 10 ms.
  • 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.
  • 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.
  • 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.
  • the blue-blue abnormality signal due to an actual failure is longer than the threshold value T3.
  • 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.
  • 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.
  • 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 ⁇ T compared to the lamp color switching time of the lamp color signal.
  • the delay time ⁇ T is, for example, about 2 to 30 ms.
  • 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 ⁇ T) has elapsed since the lamp color of the signal lamp 1 is switched. Generate a simulated signal.
  • the predetermined time can be about 2 to 30 ms, for example.
  • 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 the abnormality information indicating abnormality of the blue-blue detection circuit 30 to the outside.
  • 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.
  • 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).
  • 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.
  • the control unit 10 determines that the blue / blue detection circuit 30 is normal (S16) and ends the process.
  • 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).
  • the control unit 10 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).
  • 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.
  • the control unit 10 determines that the blue-blue detection circuit is abnormal (S26), flashes the signal lamp 1 (S27), and ends the process.
  • 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.
  • 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.
  • the date and time determined to be abnormal can also be recorded.
  • the date and time when the blue / blue detection circuit or the like is determined to be normal may be recorded.
  • intersection where the main road and the secondary road intersect has been described as an example.
  • 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.

Abstract

Provided is a traffic signal controller that makes it possible to determine the normality or abnormality of a detection function that detects a state in which a combination of the light colors of a signal light unit is prohibited. A light color output circuit (40) outputs a green output state, said green output state being a signal indicating whether the AC100V that drives the green light of each signal light unit (1) is being output to each signal light unit (1), to an OR circuit (20). A generation unit (11) generates a simulation signal for simulating a state in which a combination of the light colors of each signal light unit is prohibited, and outputs the simulation signal to the OR circuit (20). The OR circuit (20) acquires the simulation signal and/or the green output state and outputs a green output monitor to a green-green detection circuit (30). A determining unit (12) determines whether the green-green detection circuit (30) is normal or abnormal on the basis of the simulation signal generated by the generation unit (11) and the green-green abnormality signal output by the green-green detection circuit (30).

Description

交通信号制御機Traffic signal controller
　本発明は、複数の信号灯器の灯色を切り替える交通信号制御機に関する。 The present invention relates to a traffic signal controller that switches the color of a plurality of signal lamps.
　交通信号制御機は、ステップ（階梯）毎に各信号灯器の灯色を定めた灯色情報、各灯色の表示時間などを含むステップ情報に基づいて、各信号灯器の灯色を切り替える（特許文献１参照）。そして、交通信号制御機は、自身の状態が正常であるか否かを監視している。交通信号制御機は、予め定められたステップ情報に基づいて、信号灯器の正常な３色灯色（赤、黄、青）での灯色制御ができないと判定した場合、例えば、交差する道路の信号灯器の灯色が同時に青になった場合には、閃光回路からの閃光信号に基づいて、信号灯器を閃光表示（例えば、黄点滅と赤点滅の組み合わせ、赤点滅など）することにより、車両又は歩行者に対して注意を促し、交通事故を未然に防止している。 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.
　図１２は従来の交通信号制御機２００の構成例を示すブロック図である。図１２に示すように、交通信号制御機２００は、現示データ２０３に基づいて各信号灯器１の灯色を制御するため灯色信号を出力する制御部２０１、外部の管制センタにある上位装置３００との間の通信機能を有するインタフェース部２０２、制御部２０１が出力した灯色信号に基づいて、灯色出力状態(例えば、ＡＣ１００Ｖ又は所定の電圧)を各信号灯器１へ出力する灯色出力回路２０５、灯色出力回路２０５が出力する電圧を検出して、各信号灯器１の灯色の青状態を取得し、例えば、交差する道路それぞれに対する信号灯器１が同時に青になっている青青状態を検出して制御部２０１へ出力する青青検出回路２０４などを備えている。 FIG. 12 is a block diagram showing 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.
　青青検出回路２０４で青青状態が検出された場合、不図示の閃光回路からの閃光信号を灯色出力回路２０５へ出力して、交通事故を誘発しかねない危険な青青状態を回避する。 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.
特開昭６２－１１１３９５号公報JP-A-62-1111395
　しかしながら、従来の交通信号制御機２００では、青青検出回路２０４が何らかの原因で故障した場合、青青検出回路２０４の異常を検出することができない。このため、例えば、交差する道路それぞれに対する信号灯器１が、同時に青となる青青状態に現実になった場合に、青青状態を確実に検出することができない可能性があった。 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.
　本発明は、斯かる事情に鑑みてなされたものであり、信号灯器の灯色の組み合わせが禁止されている状態を検出する検出機能が正常であるか否かを判定することができる交通信号制御機を提供することを目的とする。 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.
　第１発明に係る交通信号制御機は、複数の信号灯器の灯色を切り替える交通信号制御機において、各信号灯器の灯色の組み合わせが禁止された状態を模擬するための模擬信号を生成する生成部と、各信号灯器の灯色出力状態及び又は前記生成部で生成した模擬信号に応じて、灯色の組み合わせが禁止された状態であるか否かを示す禁止状態信号を出力する禁止状態検出部と、前記生成部で生成した模擬信号及び／又は前記禁止状態検出部が出力した禁止状態信号に基づいて、該禁止状態検出部の正常／異常を判定する判定部とを備えることを特徴とする。 The traffic signal controller according to the first aspect of the present invention is a traffic signal controller that switches the lamp colors of a plurality of signal lamps, and generates a simulation signal for simulating a state in which the combination of the lamp colors of each signal lamp is prohibited And a prohibition state detection that outputs a prohibition state signal indicating whether or not a combination of the lamp colors is prohibited in accordance with a lamp color output state of each signal lamp and / or a simulation signal generated by the generation unit And a determination unit that determines 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. To do.
　第２発明に係る交通信号制御機は、第１発明において、前記生成部で生成した模擬信号及び／又は各信号灯器の灯色出力状態を取得し、取得した灯色出力状態が青である場合、該灯色出力状態及び／又は取得した模擬信号を前記禁止状態検出部へ出力する青色監視部を備え、前記禁止状態検出部は、前記青色監視部から取得した模擬信号及び／又は灯色出力状態が、少なくとも２つの信号灯器の灯色が同時に青であることを示す場合、灯色の組み合わせが禁止された状態である旨の禁止状態信号を出力するように構成してあることを特徴とする。 The traffic signal controller according to the second invention is the traffic signal controller according to the first invention, wherein the simulation 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 blue A blue monitoring unit that outputs the lamp color output state and / or the acquired simulated signal to the prohibited state detection unit, wherein the prohibited state detection unit outputs the simulated signal and / or lamp color output acquired from the blue monitoring unit. When the state indicates that the light colors of at least two signal lamps are blue at the same time, a prohibited state signal indicating that the combination of the light colors is prohibited is output. To do.
　第３発明に係る交通信号制御機は、第２発明において、前記生成部は、各信号灯器のいずれの灯色も青でない場合、該信号灯器のうち少なくとも２つの信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする。 The traffic signal controller according to a third aspect of the present invention is the traffic signal controller according to the second aspect, wherein when the light color of each signal light device is not blue, the light color of at least two of the signal light devices is blue. It is configured to generate a simulation signal that simulates a certain state.
　第４発明に係る交通信号制御機は、第２発明又は第３発明において、前記生成部は、前記信号灯器のいずれか一の信号灯器の灯色が青の場合、該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする。 A traffic signal controller according to a fourth invention is the traffic signal controller according to the second invention or the third invention, 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 that simulates a state in which the color of another signal lamp is blue.
　第５発明に係る交通信号制御機は、第２発明又は第４発明において、前記生成部は、前記信号灯器のいずれか一の信号灯器の灯色が切り替わった時点から所定時間経過後に、該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする。 The traffic signal controller according to a fifth aspect of the present invention is the traffic signal controller according to the second or fourth aspect, wherein the generating unit is configured to switch the one of the signal lamps after a predetermined time has elapsed from when the lamp color of one of the signal lamps 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.
　第６発明に係る交通信号制御機は、第４発明又は第５発明において、前記青色監視部から取得した模擬信号及び／又は灯色出力状態に基づいて、少なくとも２つの信号灯器の灯色が同時に青となる時間に基づいて、灯色が同時に青となる要因が模擬信号によるものか否かを判定する要因判定部を備えることを特徴とする。 A traffic signal controller according to a sixth aspect of the present invention is the traffic signal controller according to the fourth or fifth aspect, wherein the light colors of at least two signal lamps are simultaneously based on the simulated signal and / or the light color output state acquired from the blue monitoring unit. A factor determination unit is provided that determines whether or not the factor that causes the lamp color to become blue simultaneously is based on a simulated signal based on the time when it becomes blue.
　第７発明に係る交通信号制御機は、第２発明乃至第６発明のいずれか１つにおいて、前記判定部は、前記青色監視部が出力する模擬信号及び／又は灯色出力状態である青監視信号と、前記禁止状態検出部が出力する禁止状態信号とに基づいて、該禁止状態検出部の正常／異常を判定するように構成してあることを特徴とする。 The traffic signal controller according to a seventh aspect of the present invention is the traffic signal controller according to any one of the second to sixth aspects, wherein the determination unit is a simulated signal output from the blue monitoring unit and / or a blue color output state. 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.
　第８発明に係る交通信号制御機は、第２発明乃至第７発明のいずれか１つにおいて、前記生成部で少なくとも２つの信号灯器の灯色が同時に青になる模擬信号を生成した場合に、前記青色監視部が出力する模擬信号及び／又は灯色出力状態が、少なくとも２つの信号灯器の灯色が同時に青でないことを示すとき、異常と診断する自己診断部を備えることを特徴とする。 A traffic signal controller according to an eighth aspect of the present invention is the traffic signal controller according to any one of the second to seventh aspects, wherein the generation 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.
　第９発明に係る交通信号制御機は、第１発明乃至第８発明のいずれか１つにおいて、前記禁止状態検出部の異常を示す異常情報を外部へ通知する通知部を備えることを特徴とする。 A traffic signal controller according to a ninth aspect of the present invention is the traffic signal controller according to any one of the first to eighth aspects, further comprising a notification unit that notifies the abnormality information indicating the abnormality of the prohibited state detection unit to the outside. .
　第１発明にあっては、生成部は、各信号灯器の灯色の組み合わせが禁止された状態を模擬するための模擬信号（模擬青信号とも称する）を生成して出力する。各信号灯器の灯色の組み合わせが禁止された状態とは、例えば、交差する道路それぞれに対する信号灯器の灯色が同時に青になっている青青状態などをいう。禁止状態検出部は、各信号灯器の灯色出力状態（例えば、信号灯器を駆動するＡＣ１００Ｖなどの所定の電圧が信号灯器へ出力されているか否かを示す信号であり、青出力状態とも称する）及び／又は生成部で生成した模擬信号に応じて（すなわち、灯色出力状態のみ、模擬信号のみ、あるいは灯色出力状態と模擬信号との組み合わせに応じて）、灯色の組み合わせが禁止された状態であるか否かを示す禁止状態信号（青青異常信号とも称する）を出力する。判定部は、生成部で生成した模擬信号と、禁止状態検出部が出力した禁止状態信号とに基づいて、禁止状態検出部の正常／異常を判定する。 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.
　すなわち、禁止状態検出部が灯色の組み合わせが禁止された状態であることを示す禁止状態信号を出力するように、生成部が模擬信号を生成して出力した場合に、禁止状態検出部が正常であれば、禁止状態検出部は、灯色の組み合わせが禁止された状態であることを示す禁止状態信号を出力するはずである。したがって、生成部が生成して出力した模擬信号と禁止状態検出部が出力した禁止状態信号とを比較することにより、信号灯器の灯色の組み合わせが禁止されている状態を検出するための禁止状態検出部の正常／異常を判定することができる。 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.
　第２発明にあっては、青色監視部は、生成部で生成した模擬信号及び／又は各信号灯器の灯色出力状態を取得し、取得した灯色出力状態が青である場合、該灯色出力状態及び／又は取得した模擬信号を禁止状態検出部へ出力する。青色監視部が禁止状態検出部へ出力する青の灯色出力状態及び模擬信号を青出力モニタとも称する。すなわち、青色監視部は、信号灯器の灯色を青に模擬する模擬信号、信号灯器の灯色が青である灯色出力状態を取得して、青出力モニタとして禁止状態検出部へ出力する。禁止状態検出部は、青色監視部から取得した模擬信号及び／又は灯色出力状態が、少なくとも２つの信号灯器の灯色が禁止された組み合わせの青であることを示す場合、灯色の組み合わせが禁止された状態である旨の禁止状態信号（青青異常信号）を出力する。 In the second 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, and if the acquired lamp color output state is blue, the lamp color The 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.
　生成部で生成した模擬信号を信号灯器の灯色表示には反映されないように青色監視部へ出力するので、交通信号制御機で信号灯器の灯色を切り替える通常の運用中であっても、模擬信号を用いて、信号灯器の灯色が禁止された組み合わせの青となる青青状態を疑似的に作り出すことができ、交通信号制御機の通常の運用と同時並行に禁止状態検出部の正常／異常を判定することができる。 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.
　第３発明にあっては、生成部は、各信号灯器のいずれの灯色も青でない場合、信号灯器のうち少なくとも２つの信号灯器の灯色が青である状態を模擬する模擬信号を生成する。各信号灯器のいずれの灯色も青でないので、青色監視部は、信号灯器の灯色が青である信号としては模擬信号だけを取得することになり、禁止状態検出部へ模擬信号だけを出力する。例えば、禁止状態検出部へ灯色が禁止された組み合わせの青となる模擬信号を出力した場合に、禁止状態検出部が禁止された組み合わせの青である状態の禁止状態信号を出力しないときは、禁止状態検出が異常であると判定することができる。模擬信号のみを用いることにより、灯色出力状態が伝送される信号線などの状態を除いて、禁止状態検出部だけの正常／異常を判定することができる。 In the third aspect of the 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 signal lamps 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.
　第４発明にあっては、生成部は、信号灯器のいずれか一の信号灯器の灯色が青の場合、当該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成する。例えば、青色監視部が、信号灯器の灯色が青である灯色出力状態と、別の信号灯器の灯色を青に模擬する模擬信号とを禁止状態検出部へ出力した場合において、禁止状態検出部が禁止された組み合わせの青である状態の禁止状態信号を出力したときには、禁止状態検出部は正常であると判定することができ、また、禁止状態検出部が禁止状態信号を出力しないときには、禁止状態検出部の異常だけでなく、灯色出力状態を伝送する信号線の異常も同時に判定することができ、故障していると推定される箇所を漏れなく抽出することができる。 In the fourth invention, the generation unit simulates a state in which the signal color of any one of the signal lamps is blue, and the lamp color of the signal lamp other than the one signal lamp is blue. A simulation signal 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.
　第５発明にあっては、生成部は、信号灯器のいずれか一の信号灯器の灯色が切り替わった時点から所定時間経過後に、当該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成する。所定時間は、例えば、２～３０ｍｓ程度とすることができる。交通信号制御機が信号灯器の灯色を制御すべく生成する灯色信号は、信号灯器を駆動するためＡＣ１００Ｖ等の所定の電圧に変換されるが、当該電圧の有無を判定して出力される灯色出力状態の切り替わりは、灯色信号の灯色の切り替わり時点に比べて遅延する。このため、信号灯器の灯色が切り替わった時点に模擬信号を生成した場合、灯色出力状態は、灯色信号が切り替わる前の灯色となっているため、意図しない灯色の組み合わせを用いることになる。模擬信号を生成して出力する時点を遅延させることにより、意図通りの灯色の組み合わせを用いて禁止状態検出部の正常／異常を判定することができる。 In the fifth aspect of the invention, the generator is configured such that after a predetermined time has elapsed from when the signal color of any one of the signal lamps is switched, the color of the signal lamp other than the one signal lamp is blue. A simulation signal for simulating the state is generated. The predetermined time can be about 2 to 30 ms, for example. 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.
　第６発明にあっては、要因判定部は、青色監視部から取得した模擬信号及び／又は灯色出力状態に基づいて、少なくとも２つの信号灯器の灯色が同時に青（禁止された組み合わせの青）となる時間に基づいて、灯色が同時に青となる要因が模擬信号によるものか否かを判定する。 In the sixth aspect of the invention, the factor determination unit determines that the lamp colors of at least two signal lamps are simultaneously blue (a prohibited combination of blue based on the simulated signal and / or lamp color output state acquired from the blue monitoring unit. ), It is determined whether or not the cause that the lamp color simultaneously becomes blue is due to the simulated signal.
　例えば、灯色出力状態と模擬信号とにより同時青と判定した場合は、禁止状態信号（青青異常信号）の信号長は、模擬信号の長さで決定され、例えば、１０ｍｓ程度である。一方、灯色出力状態同士で同時青と判定した場合は、模擬ではなく現実の故障による異常であるので、禁止状態信号（青青異常信号）の信号長は長くなる。そこで、禁止状態信号が短い場合には、模擬信号によるものと判定することができ、禁止状態信号が長い場合には、現実の故障によるものと判定することができる。これにより、同時青の要因が模擬信号によるものが現実の故障によるものかを任意の時点で判定することができるので、例えば、交通信号制御機の通常の運用中に、模擬信号による正常／異常判定を行うための占有時間などを設ける必要がなく、現実の青青異常検出を行いながら禁止状態検出部の正常／異常を判定することができる。 For example, when it is determined that the blue color is simultaneous with 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, for example, about 10 ms. 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.
　第７発明にあっては、判定部は、青色監視部が出力する模擬信号及び／又は灯色出力状態である青監視信号と、禁止状態検出部が出力する禁止状態信号とに基づいて、禁止状態検出部の正常／異常を判定する。例えば、青監視信号が同時青（禁止された組み合わせの青）である場合に、禁止状態信号が同時青（禁止された組み合わせの青）でないときは、禁止状態検出部が異常であると判定する。また、青監視信号が同時青でない場合に、禁止状態信号が同時青であるときも、禁止状態検出部が異常であると判定する。これにより、禁止状態検出部の異常を正確に特定することができる。 In the seventh invention, the determination unit is prohibited based on the simulated signal output from the blue monitoring unit and / or the blue monitoring signal in the lamp color output state and the prohibited state signal output from the prohibited 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.
　第８発明にあっては、自己診断部は、生成部で少なくとも２つの信号灯器の灯色が同時に青（禁止された組み合わせの青）になる模擬信号を生成した場合に、青色監視部が出力する模擬信号及び／又は灯色出力状態（青出力モニタ）が、少なくとも２つの信号灯器の灯色が同時に青（禁止された組み合わせの青）でないことを示すとき、異常と診断する。例えば、生成部が一の信号灯器の灯色出力状態が青のタイミングで、別の信号灯器の灯色を青に模擬する模擬信号を生成して出力した場合、青色監視部は、同時青を示す青出力モニタを出力すべきであるが、青色監視部が出力する模擬信号又は灯色出力状態が、少なくとも２つの信号灯器の灯色が同時に青でない場合には、青色監視部の異常、あるいは青色監視部が取得した灯色出力状態の異常、すなわち、灯色出力状態を伝送する信号線又は灯色出力状態を出力する回路（例えば、灯色出力回路と称する）などの異常と診断することができる。 In the eighth invention, the self-diagnosis unit outputs the simulation signal when the generation unit generates a simulation signal in which the light colors of at least two signal lamps are 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.
　第９発明にあっては、通知部は、禁止状態検出部の異常を示す異常情報を外部へ通知する。通知部は、例えば、通信回線を使用して外部の上位装置へ禁止状態検出部の異常を通知することができ、あるいは交通信号制御機に備えられた表示灯などを点灯又は点滅させて異常を通知することができる。これにより、禁止状態検出部の異常が発生した場合、速やかに異常を伝えることができる。 In the ninth invention, the notifying unit notifies the outside of the abnormality information indicating the abnormality of the prohibited state detecting unit. 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 light 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.
　本発明によれば、生成部が生成して出力した模擬信号と禁止状態検出部が出力した禁止状態信号とを比較することにより、信号灯器の灯色の組み合わせが禁止されている状態を検出するための禁止状態検出部の正常／異常を判定することができる。 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.
本実施の形態に係る交通信号制御機の構成の一例を示すブロック図である。It is a block diagram which shows an example of a structure of the traffic signal controller which concerns on this Embodiment. 本実施の形態に係る交通信号制御機により制御される信号灯器が設置された交差点の一例を示す模式図である。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. 各信号灯器の灯色の組み合わせが禁止された同時青の状態を示す説明図である。It is explanatory drawing which shows the state of the simultaneous blue where the combination of the color of each signal lamp was prohibited. 各信号灯器の灯色のステップと模擬信号出力との関係を示す説明図である。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. 青青検出回路３０の正常異常を判定する一例を示す説明図である。It is explanatory drawing which shows an example which determines the normal / abnormality of the blue-blue detection circuit. 模擬信号を使用する場合の判定例を示す説明図である。It is explanatory drawing which shows the example of determination in the case of using a simulation signal. 模擬信号を使用しない場合の判定例を示す説明図である。It is explanatory drawing which shows the example of determination when not using a simulation signal. 青青異常信号がオンとなる要因の判定方法の一例を示す説明図である。It is explanatory drawing which shows an example of the determination method of the factor by which a blue-blue abnormality signal turns on. 模擬信号の生成時点の一例を示す説明図である。It is explanatory drawing which shows an example of the production | generation time of a simulation signal. 模擬信号を使用する場合の正常／異常の判定処理の手順を示すフローチャートである。It is a flowchart which shows the procedure of the normal / abnormal determination process in the case of using a simulation signal. 模擬信号を使用しない場合の正常／異常の判定処理の手順を示すフローチャートである。It is a flowchart which shows the procedure of the normal / abnormal determination process when not using a simulation signal. 従来の交通信号制御機の構成例を示すブロック図である。It is a block diagram which shows the structural example of the conventional traffic signal controller.
　以下、本発明に係る交通信号制御機の実施の形態を示す図面に基づいて説明する。図１は本実施の形態に係る交通信号制御機１００の構成の一例を示すブロック図である。交通信号制御機１００は、制御部１０、論理和回路２０、青青検出回路３０、灯色出力回路４０、インタフェース部５０、通知部６０、現示データ７０などを備える。また、制御部１０は、生成部１１、判定部１２などを備える。 Hereinafter, description will be made based on the drawings showing an embodiment of a traffic signal controller according to the present invention. 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.
　制御部１０は、現示データ７０に基づいて、各信号灯器１の灯色を切り替えるための灯色信号を灯色出力回路４０へ出力する。 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.
　現示データ７０は、例えば、ステップ毎の各灯色の状態（点灯又は消灯）を示す灯色情報、灯色の順序、各ステップの基準表示秒数（基準表示時間）、最短表示秒数（最短表示時間）、最長表示秒数（最長表示時間）、階梯種別（例えば、長階梯、中階梯、短階梯などの区分を示す）、保安秒数、動作設定などの各情報を含む。 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.
　灯色出力回路４０は、制御部１０が出力した灯色信号を、信号灯器１を駆動するためのＡＣ１００Ｖ又は所定の電圧に変換し、信号灯器１のランプ又はＬＥＤ（発光ダイオード）を点灯させる。また、灯色出力回路４０は、各信号灯器１の青灯を駆動するＡＣ１００Ｖ等の所定の電圧が各信号灯器１へ出力されているか否かを示す信号である青出力状態（灯色出力状態）を論理和回路２０へ出力する。すなわち、信号灯器１の青灯を駆動する駆動線（電源線）にＡＣ１００Ｖ等が出力されている場合、当該信号灯器１の青出力状態はオン（又はあり）となる。したがって、図２の場合、青出力状態は、主道路側で３つ、従道路側で３つの合計６つの情報量を有する。 The lamp color output circuit 40 converts the lamp color signal output from the control unit 10 into AC100V 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.
　生成部１１は、各信号灯器１の灯色の組み合わせが禁止された状態を模擬するための模擬信号（模擬青信号とも称する）を生成して論理和回路２０へ出力する。模擬信号も青出力状態と同じ情報量を有する。各信号灯器１の灯色の組み合わせが禁止された状態とは、例えば、交差する道路それぞれに対する信号灯器１の灯色が同時に青（禁止された組み合わせの青）になっている青青状態をいう。以下、各信号灯器１の灯色の組み合わせが禁止された状態について説明する。本実施の形態で同時青とは、灯色が禁止された組み合わせの青であることを意味するものとする。 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 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.
　図２は本実施の形態に係る交通信号制御機１００により制御される信号灯器１が設置された交差点の一例を示す模式図である。図２に示すように、交差点は、主道路と従道路とが交差している。主道路に対する信号灯器１の灯色は、１Ｇ（青）、１Ａ（右折の青矢）である。また、従道路に対する信号灯器１の灯色は、２Ｇ（青）、２Ａ（右折の青矢）である。従道路を横断する横断歩道に対する歩行者用の信号灯器１は、１ＰＧ（歩青）であり、主道路を横断する横断歩道に対する歩行者用の信号灯器１は、２ＰＧ（歩青）である。なお、交差点に交差する道路の数、信号灯器１の灯色は、一例であって、図２の例に限定されない。また、本実施の形態で信号灯器１は、車両用の信号灯器、歩行者用の信号灯器も含む。また、灯色の青とは、直進の青、左折の青矢、右折の青矢、歩行者の青などを含む。 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.
　図３は各信号灯器の灯色の組み合わせが禁止された同時青の状態を示す説明図である。図３において、符号Ｏは、灯色の組み合わせが許可された状態を示し、符号Ｎは禁止された状態を示す。また、図３の例は、図２で示す信号灯器１の灯色の組み合わせを示す。図３に示すように、主道路の灯色１Ｇ（青）は、主道路の灯色１ＰＧ（歩青）と同時に点灯することは許可される。しかし、主道路の灯色１Ｇ（青）は、主道路の灯色１Ａ（青矢）、従道路の２Ｇ（青）、２ＰＧ（歩青）又は２Ａ（青矢）のいずれとも同時に点灯することは禁止されている。 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.
　同様に、主道路の灯色１ＰＧ（歩青）は、主道路の灯色１Ｇ（青）と同時に点灯することは許容されるが、主道路の灯色１Ａ（青矢）、従道路の２Ｇ（青）、２ＰＧ（歩青）又は２Ａ（青矢）のいずれとも同時に点灯することは禁止されている。 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.
　同様に、主道路の灯色１Ａ（青矢）は、主道路の灯色１Ｇ（青）、１ＰＧ（歩青）、従道路の２Ｇ（青）、２ＰＧ（歩青）又は２Ａ（青矢）のいずれとも同時に点灯することは禁止されている。また、従道路の灯色２Ｇ（青）、２ＰＧ（歩青）、２Ａ（青矢）についても同様である。 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.
　また、主道路の灯色と従道路の灯色の組み合わせに関し、図３に示すようにＣ１～Ｃ６の区分に分けてある。区分Ｃ１～Ｃ６で示す灯色の組み合わせを、どのタイミングで判定するかは後述する。 Also, 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 indicated by the sections C1 to C6 is determined will be described later.
　生成部１１は、模擬信号（模擬青信号）と、灯色出力回路４０が出力する青出力状態とで灯色の組み合わせが禁止された同時青を模擬するとともに、模擬信号のみで灯色の組み合わせが禁止された同時青を模擬する。なお、生成部１１が模擬信号を生成して論理和回路２０へ出力しない場合でも、灯色出力回路４０が出力する青出力状態のみで灯色の組み合わせが禁止された同時青となる。この場合には、現実に交通信号制御機１００に故障が発生しており、模擬ではなく実際の故障状態を示すものである。 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.
　論理和回路２０は、生成部１１で生成した模擬信号及び／又は灯色出力回路４０が出力した灯色出力状態を取得し、取得した灯色出力状態が青（青出力状態）である場合、当該灯色出力状態（すなわち、青出力状態）及び／又は取得した模擬信号を青青検出回路３０へ出力する青色監視部としての機能を有する。すなわち、図２の場合には、灯色出力回路４０の１Ｇ、１ＰＧ、１Ａ、２Ｇ、２ＰＧ、２Ａの６本の信号線と、模擬信号の１Ｇ、１ＰＧ、１Ａ、２Ｇ、２ＰＧ、２Ａの６本の信号線とが論理和回路２０に入力され、１Ｇ、１ＰＧ、１Ａ、２Ｇ、２ＰＧ、２Ａのそれぞれについて、灯色出力回路４０の信号線の信号と模擬信号の信号線の信号とが論理和される。 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.
　論理和回路２０が青青検出回路３０へ出力する青の灯色出力状態（青出力状態）及び模擬信号を青出力モニタ（青監視信号）とも称する。すなわち、論理和回路２０は、信号灯器１の灯色が青である状態を模擬する模擬信号及び／又は信号灯器１の灯色が青である灯色出力状態（青出力状態）を取得して、青出力モニタとして青青検出回路３０へ出力する。また、論理和回路２０は、青出力モニタを制御部１０へ出力する。 The blue light 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.
　なお、図１の例で、論理和回路２０を省略することもできる。この場合には、生成部１１で生成した模擬信号を青青検出回路３０へ出力するとともに、灯色出力回路４０が出力する青出力状態を青青検出回路３０へ出力すればよい。また、模擬信号と青出力状態とを青出力モニタとして制御部１０へ出力すればよい。 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.
　青青検出回路３０は、各信号灯器１の灯色出力状態又は生成部１１で生成した模擬信号に応じて、灯色の組み合わせが禁止された状態であるか否かを示す青青異常信号（禁止状態信号）を出力する禁止状態検出部としての機能を有する。 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.
　青青検出回路３０は、各信号灯器１の灯色出力状態（例えば、信号灯器を駆動するＡＣ１００Ｖなどの所定の電圧が信号灯器へ出力されているか否かを示す信号であり、青出力状態とも称する）及び／又は生成部１１で生成した模擬信号に応じて（すなわち、灯色出力状態のみ、模擬信号のみ、あるいは灯色出力状態と模擬信号との組み合わせに応じて）、灯色の組み合わせが禁止された状態であるか否かを示す禁止状態信号（青青異常信号とも称する）を出力する。 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.
　より具体的には、青青検出回路３０は、論理和回路２０が出力する青出力モニタを取得し、同時青の状態であるか否かを判定し、同時青の状態であれば、青青異常信号を制御部１０へ出力する。 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.
　判定部１２は、生成部１１で生成した模擬信号、灯色出力回路４０が出力した灯色出力状態、青青検出回路３０が出力した青青異常信号（禁止状態信号）、論理和回路２０が出力する青出力モニタなどに基づいて、青青検出回路３０などの正常／異常を判定する。例えば、青青検出回路３０が、灯色の組み合わせが禁止された状態であることを示す青青異常信号（禁止状態信号）を出力するように、生成部１１が模擬信号を生成し、論理和回路２０を介して模擬信号のみを青青検出回路３０へ出力した場合に、青青検出回路３０が正常であれば、青青検出回路３０は、灯色の組み合わせが禁止された状態であることを示す青青異常信号を出力し、青青検出回路３０が青青異常信号を出力しない場合には、青青検出回路３０は異常であると判定することができる。したがって、青青検出回路３０の異常を正確に特定することができる。 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.
　また、論理和回路２０を具備することにより、生成部１１で生成した模擬信号を信号灯器の灯色表示には反映されないように論理和回路２０へ出力するので、交通信号制御機１００で信号灯器の灯色を切り替える通常の運用中であっても、模擬信号を用いて、信号灯器１の灯色が同時に青となる青青状態を疑似的に作り出すことができ、交通信号制御機１００の通常の運用と同時並行に青青検出回路３０の正常／異常を判定することができる。 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.
　次に、模擬信号（模擬青信号）による灯色の同時青の状態を模擬する方法について説明する。模擬信号（模擬青信号）による灯色の同時青の状態を模擬する方法には、２通りの方法（パターン）がある。第１の方法（第１のパターン）は、任意の信号灯器１の灯色が青であるタイミングに、別の信号灯器１の灯色が青である状態を模擬すべく模擬信号を生成する場合であり、実際の灯色信号と模擬信号により同時青を模擬する。 Next, a method for simulating the simultaneous blue state of the lamp color using a 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.
　第２の方法（第２パターン）は、各信号灯器１の灯色のいずれもが青でないタイミングで、同時青の状態を模擬する模擬信号を生成する場合であり、模擬信号のみで同時青を模擬する。以下、それぞれの場合について説明する。 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.
　図４は各信号灯器１の灯色のステップと模擬信号出力との関係を示す説明図である。図４は、ステップ（階梯）毎の各信号灯器１の灯色（信号灯）の切り替わりの様子を示す。図中、横線は青を表し、丸印の中の矢印は青矢を表し、丸印の中のＦはフラッシュ（点滅）を表し、二重線は赤を表し、折れ線は黄を示す。なお、灯色１Ｇ、１ＰＧ、２Ｇ、２ＰＧは、本来は青であるが、便宜上黄（Ｙ）及び赤（Ｒ）を含めて記載している。また、模擬信号出力において、Ｐ１は上述の第１のパターンを表し、Ｐ２は第２のパターンを表し、横線は模擬信号を出力しないことを表す。また、図３で示した灯色の組み合わせＣ１～Ｃ６を、どのステップ（階梯）で判定するかを示す。また、ステップ１～１４において、灯色の表示時間はステップに応じて異なるが、図４では簡略化のため表示時間は考慮していない。 FIG. 4 is an explanatory diagram showing the relationship between the step of the color of each signal lamp 1 and the output of the simulated signal. 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 shows in which step (step) 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.
　図４に示すように、ステップ３では、図３で示す灯色の組み合わせＣ１を用いる。すなわち、ステップ３では、灯色１Ｇは青であり、灯色１ＰＧ、２Ｇ、２ＰＧの信号灯器の灯色は赤、１Ａ、２Ａは消灯している。そこで、灯色１Ｇとともに同時青の状態を模擬するため、模擬信号を出力する。すなわち、ステップ３の期間において、生成部１１は、順次灯色１ＰＧ、２Ｇ、２ＰＧ、１Ａ、２Ａが青であるかのような模擬信号を生成して出力する。例えば、ステップ３の時間が、２秒であり、模擬信号の信号長（パルス幅）が１０ｍｓとすると、ステップ３の期間中に、灯色１ＰＧ、２Ｇ、２ＰＧ、１Ａ、２Ａそれぞれが青である状態を複数回繰り返して模擬することができる。 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.
　ステップ５、１０、１２もステップ３と同様に第１のパターンを用いる。また、ステップ５、１０、１２では、灯色の組み合わせＣ３、Ｃ４、Ｃ６を用いる。すなわち、１つの灯色が青であるので、当該青の灯色とともに同時青の状態を模擬するため、模擬信号を出力する。 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.
　また、ステップ４では、図３で示す灯色の組み合わせＣ２を用いる。灯色の組み合わせがＣ２の場合、１ＰＧ（歩青）だけが単独で青になることはないので、模擬信号のみにより同時青の状態を模擬するため、ステップ４のタイミングを用いる。ステップ６、７についても同様である。ステップ４では、灯色１Ｇの信号灯器の灯色は黄であり、灯色１ＰＧ、２Ｇ、２ＰＧの信号灯器の灯色は赤、１Ａ、２Ａは消灯している。すなわち、各信号灯器の灯色のいずれもが青ではない。そこで、同時青の状態が禁止されている２つの灯色が同時に青になる状態を模擬するため、模擬信号を出力する。すなわち、ステップ４の期間において、生成部１１は、図３に示すような、禁止されている灯色の組み合わせを模擬する模擬信号を生成して出力する。例えば、１Ｇと２Ｇとが青になるような模擬信号を生成して出力する。 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.
　ステップ６、７もステップ４と同様に第２のパターンを用いる。すなわち、いずれの灯色も青でないので、模擬信号のみで同時青の状態を模擬する。 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.
　また、灯色の組み合わせがＣ５の場合、２ＰＧ（歩青）だけが単独で青になることはないので、模擬信号のみにより同時青の状態を模擬するため、ステップ１１のタイミングを用いる。ステップ１３、１４についても同様である。ステップ１１、１３、１４もステップ４と同様に第２のパターンを用いる。すなわち、いずれの灯色も青でないので、模擬信号のみで同時青の状態を模擬する。 Also, 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.
　前述の第２のパターンのように、各信号灯器１のいずれの灯色も青でない場合、生成部１１は、信号灯器１のうち少なくとも２つの信号灯器の灯色が青である状態を模擬する模擬信号を生成する。各信号灯器１のいずれの灯色も青でないので、論理和回路２０は、信号灯器の灯色が青である信号としては模擬信号だけを取得することになり、青出力モニタは、模擬信号だけで構成される。 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.
　図４の例では、第１パターンＰ１及び第２パターンＰの両方を用いる場合について説明したが、第１パターンＰ１を用いずに第２のパターンＰ２のみを用いて正常／異常の判定を行ってもよい。 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.
　判定部１２は、論理和回路２０が出力する青出力モニタ（青監視信号）と、青青検出回路３０が出力する青青異常信号とに基づいて、青青検出回路３０の正常／異常を判定する。 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.
　図５は青青検出回路３０の正常異常を判定する一例を示す説明図である。図５に示すように、青出力モニタが同時青である場合に、青青異常信号がオンのときには青青検出回路３０は正常であると判定し、青青異常信号がオフのときには青青検出回路３０は異常であると判定する。また、青出力モニタが同時青でない場合に、青青異常信号がオンのときには青青検出回路３０は異常であると判定し、青青異常信号がオフのときには青青検出回路３０は正常であると判定する。これにより、青青検出回路３０の異常を正確に特定することができる。 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.
　同時青を模擬すべく、論理和回路２０を介して、模擬信号のみを青青検出回路３０へ出力した場合に、青青検出回路３０が青青異常信号（同時青である状態の禁止状態信号）を出力しないときは、青青検出回路３０が異常であると判定することができる。一方、模擬信号と灯色出力状態の両方を青青検出回路３０へ出力した場合に、青青検出回路３０が青青異常信号（同時青である状態の禁止状態信号）を出力しないときは、青青検出回路３０の他に灯色出力回路４０の異常も検出することができる。 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.
　すなわち、前述の第１のパターンのように、一の信号灯器１の灯色が青の場合、生成部１１は、当該一の信号灯器１とは別の信号灯器１の灯色が青である状態を模擬する模擬信号を生成する。例えば、論理和回路２０が、信号灯器１の灯色が青である青出力状態（灯色出力状態）と、別の信号灯器１の灯色を青に模擬する模擬信号とを取得して青出力モニタとして青青検出回路３０へ出力した場合において、青青検出回路３０が青青異常信号（同時青である状態の禁止状態信号）を出力したときには、青青検出回路３０は正常であると判定することができ、また、青青検出回路３０が青青異常信号を出力しないときには、青青検出回路３０の異常だけでなく、灯色出力状態が伝送される信号線（例えば、灯色出力回路４０と論理和回路２０との間の伝送線）の異常も同時に判定することができ、故障していると推定される箇所を漏れなく抽出することができる。 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.
　次に、判定部１２による判定例について説明する。判定部１２による判定は、模擬信号を用いた場合の判定、すなわち模擬的に同時青の状態を作り出して故障診断する場合と、模擬信号を用いない場合の判定、すなわち実際の同時青の有無を判定する場合とがある。 Next, an example of determination 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.
　図６は模擬信号を使用する場合の判定例を示す説明図である。図６に示すように、判定の場合分けは、青出力モニタが同時青か否かと、青青異常信号がオンかオフかで場合分けされる。例えば、青出力モニタが同時青であり、青青異常信号がオンの場合、青青検出回路３０は正常であると判定することができ、信号灯器１の閃光表示はしない。 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.
　また、青出力モニタが同時青であり、青青異常信号がオフの場合、青青検出回路３０は異常であると判定することができ、信号灯器１の閃光表示を行う。 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 flashes.
　また、青出力モニタが同時青でなく、青青異常信号がオン又はオフの場合、生成部１１から同時青を模擬すべく模擬信号が論理和回路２０へ出力されているにもかかわらず、青出力モニタが同時青でないのは、論理和回路２０を含む前段の回路又は伝送線が故障していると考えられるので、交通信号制御機１００の異常と判定し、信号灯器１の閃光表示を行う。 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.
　すなわち、判定部１２は、生成部１１で少なくとも２つの信号灯器１の灯色が同時に青になる模擬信号を生成した場合に、論理和回路２０が出力する青出力モニタが、少なくとも２つの信号灯器１の灯色が同時に青でないことを示すとき、異常と診断する。例えば、生成部１１が一の信号灯器１の青出力状態（灯色出力状態が青の）が出力されているタイミングで、別の信号灯器１の灯色を青に模擬する模擬信号を生成して出力した場合、論理和回路２０は、同時青を示す青出力モニタを出力すべきであるが、論理和回路２０が出力する青出力モニタが同時青でない場合には、論理和回路２０の異常、あるいは論理和回路２０が取得した青出力状態の異常、すなわち、青出力状態を伝送する信号線又は青出力状態を出力する灯色出力回路などの異常と診断することができる。 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.
　図７は模擬信号を使用しない場合の判定例を示す説明図である。図７に示すように、判定の場合分けは、青出力モニタが同時青か否かと、青青異常信号がオンかオフかで場合分けされる。例えば、青出力モニタが同時青であり、青青異常信号がオンの場合、青青検出回路３０は正常であると判定することができ、さらに実際の灯色が同時青の状態（模擬ではなく現実の同時青の状態）になっているので、信号灯器１の閃光表示を行う。 FIG. 7 is an explanatory diagram showing a determination example 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.
　また、青出力モニタが同時青であり、青青異常信号がオフの場合、青青検出回路３０は異常であると判定することができ、さらに実際の灯色が同時青の状態（模擬ではなく現実の同時青の状態）になっているので、信号灯器１の閃光表示を行う。 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.
　また、青出力モニタが同時青でなく、青青異常信号がオンの場合、青青検出回路３０は異常であると判定することができ、信号灯器１の閃光表示を行う。この場合には、模擬信号を用いることなく、未然に青青検出回路３０の故障を見つけることができる。 Further, 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 flashing of the signal lamp 1 is performed. In this case, a failure of the blue-blue detection circuit 30 can be found in advance without using a simulation signal.
　また、青出力モニタが同時青でなく、青青異常信号がオフの場合、青青検出回路３０は正常であると判定することができ、さらに実際の灯色が同時青の状態ではないので、信号灯器１を閃光表示しない。 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.
　次に、青青異常信号がオンとなる要因について説明する。青青異常信号がオンとなる要因には、例えば２通りあり、一方は模擬信号により灯色の同時青を模擬した場合であり、他方は実際に故障が発生して同時青になった場合である。そこで、青青異常信号がオンになる要因を判定する方法について説明する。 Next, the reason why the blue / blue anomaly signal is turned on 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.
　図８は青青異常信号がオンとなる要因の判定方法の一例を示す説明図である。図８に示すように、信号灯器１の青灯が点灯している場合に、灯色出力回路４０は、青出力状態である青（１Ｇ）を論理和回路２０へ出力する。なお、青出力状態である青（１Ｇ）は、灯色１Ｇが点灯している間出力される。生成部１１は、灯色の同時青の状態を模擬すべく模擬信号２Ｇ、２ＰＧ、２Ａ、１Ａを適当な時間を空けて生成して論理和回路２０へ出力する。各模擬信号の信号長は、例えば、１０ｍｓ程度である。 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.
　論理和回路２０は、青（１Ｇ）と模擬信号２Ｇとが入力された場合に同時青を示す青出力モニタを青青検出回路３０へ出力し、青青出力検出回路３０は、青青異常信号をオンとする（青青異常信号を出力する）。青青異常信号の信号長Ｔ１は、青（１Ｇ）と模擬信号２Ｇの両方が入力されている時間長であり、模擬信号の信号長が１０ｍｓ程度であれば、信号長Ｔ１も１０ｍｓ程度である。同様に、青（１Ｇ）と模擬信号２ＰＧの両方が入力されている時間では、青青異常信号（信号長Ｔ２）が出力される。なお、信号長Ｔ１、Ｔ２は同一値でも異なる値でもよく、模擬信号長に依存する。 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.
　一方、灯色出力回路４０が、青出力状態である青（１Ｇ）を論理和回路２０へ出力しているときに、実際に何らかの原因で故障が発生して、上述の信号灯器１とは別の信号灯器１の青灯（例えば、２Ｇ）が誤って点灯したときには、灯色出力回路４０は、模擬信号の有無にかかわらず、青出力状態である青（２Ｇ）を出力する。 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.
　論理和回路２０は、青（１Ｇ）と青（２Ｇ）とが入力された場合に同時青を示す青出力モニタを青青検出回路３０へ出力し、青青出力検出回路３０は、青青異常信号をオンとする（青青異常信号を出力する）。この場合、青青異常信号の信号長は、模擬ではなく現実の故障による異常であるので、模擬信号による場合の信号長Ｔ１、Ｔ２に比べて長くなり、例えば、２００ｍｓを超える時間となる。 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.
　青青検出回路３０は、論理和回路２０から青出力モニタを取得して青青異常信号を判定部１２へ出力する。判定部１２は、青青出力回路３０から出力された青青異常信号がオンの時間（少なくとも２つの信号灯器の灯色が禁止された組み合わせの青となる時間）に基づいて、灯色が同時に青となる要因が模擬信号によるものか否かを判定する。例えば、青青異常信号がオンの時間及び所定の閾値Ｔ３に基づいて、灯色が同時に青となる要因が模擬信号によるものか否かを判定する。例えば、所定の閾値Ｔ３は、２００ｍｓ程度とすることができる。 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.
　例えば、青出力状態（灯色出力状態）と模擬信号とにより同時青と判定した場合は、青青異常信号の信号長は、模擬信号の長さで決定され、例えば、１０ｍｓ程度である。一方、青出力状態同士で同時青と判定した場合は、模擬ではなく現実の故障による異常であるので、青青異常信号の信号長は長くなる。そこで、青青異常信号の信号長を予め定めた閾値と比較し、青青異常信号が閾値より短い場合には、模擬信号によるものと判定することができ、青青異常信号が閾値よりも長い場合には、現実の故障によるものと判定することができる。図８の例では、模擬信号による青青異常信号の信号長は、Ｔ１、Ｔ２であり、いずれも閾値Ｔ３より短い。一方、現実の故障による青青異常信号は、閾値Ｔ３よりも長くなる。これにより、同時青の要因が模擬信号によるものが現実の故障によるものかを任意の時点で判定することができるので、例えば、交通信号制御機１００の通常の運用中に、模擬信号による正常／異常判定を行うための占有時間などを設ける必要がなく、現実の青青異常検出を行いながら青青検出回路３０の正常／異常を判定することができる。 For example, when it is determined that the blue color is the same as the blue output state (lamp color output state) and the simulation signal, the signal length of the blue-blue abnormality 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.
　次に、模擬信号の生成及び出力タイミングについて説明する。図９は模擬信号の生成時点の一例を示す説明図である。図９は、例えば、信号灯器１の灯色がステップ４、ステップ５、ステップ６と切り替わる様子を示す。図９に示すように、例えば、ステップ５において、交通信号制御機１００が信号灯器１の灯色を制御すべく生成する灯色信号、青矢（１Ａ）により青矢が点灯し、ステップ６に切り替わったときに消灯するとする。 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.
　交通信号制御機１００が信号灯器１の灯色を制御すべく生成する灯色信号は、信号灯器１を駆動するためＡＣ１００Ｖ等の所定の電圧に変換されるが、当該電圧の有無を判定して出力される青出力状態（灯色出力状態）の切り替わりは、灯色信号の灯色の切り替わり時点に比べて遅延時間ΔＴだけ遅延する。遅延時間ΔＴは、例えば、２～３０ｍｓ程度である。 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.
　このため、図９に示すように、信号灯器の灯色が切り替わった時点ｔ１に模擬信号２Ｇを生成した場合、青出力状態（灯色出力状態）は、灯色信号が切り替わる前の灯色（ステップ５の灯色）となっているため、意図しない灯色の組み合わせを用いることになり、誤って青青異常信号が出力される。 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.
　生成部１１が、信号灯器１の灯色が切り替わった時点から所定時間（遅延時間ΔＴ）経過後に、当該一の信号灯器１とは別の信号灯器１の灯色が青である状態を模擬する模擬信号を生成する。所定時間は、例えば、２～３０ｍｓ程度とすることができる。模擬信号を生成して出力する時点を遅延させることにより、意図通りの灯色の組み合わせを用い、誤って青青異常信号が出力されることを防止して青青検出回路３０の正常／異常を判定することができる。 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 about 2 to 30 ms, for example. 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.
　インタフェース部５０は、外部の管制センタにある上位装置３００との間の通信機能を有する。 The interface unit 50 has a communication function with the host device 300 in the external control center.
　通知部６０は、ＬＥＤなどの表示部を備え、青青検出回路３０などの異常を示す異常情報を外部へ通知する。通知部６０は、例えば、インタフェース部５０を介して、通信回線を使用して外部の上位装置３００へ青青検出回路３０の異常を通知することができる。また、通知部６０は、表示灯などを点灯又は点滅させて異常を通知することができる。これにより、青青検出回路３０の異常が発生した場合、速やかに異常を伝えることができる。 The notification unit 60 includes a display unit such as an LED and notifies the abnormality information indicating abnormality of 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.
　次に、本実施の形態の交通信号制御機１００による正常／異常の判定方法について説明する。図１０は模擬信号を使用する場合の正常／異常の判定処理の手順を示すフローチャートである。制御部１０は、灯色が同時青となる状態を模擬する模擬信号を出力し（Ｓ１１）、論理和回路２０が出力する青出力モニタが同時青を示すか否かを判定する（Ｓ１２）。 Next, the 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).
　青出力モニタが同時青である場合（Ｓ１２でＹＥＳ）、制御部１０は、青青検出回路３０が出力する青青異常信号がオンであるか否かを判定し（Ｓ１３）、青青異常信号がオンでない場合（Ｓ１３でＮＯ）、青青検出回路が異常であると判定し（Ｓ１４）、信号灯器１を閃光表示させて（Ｓ１５）、処理を終了する。 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.
　青青異常信号がオンである場合（Ｓ１３でＹＥＳ）、制御部１０は、青青検出回路３０が正常であると判定し（Ｓ１６）、処理を終了する。なお、青青検出回路３０が正常であると判定された場合、制御部１０は、所定の時間が経過した後に、ステップＳ１１以降の処理を繰り返すこともできる。すなわち、１つのステップ（階梯）の間に複数回模擬信号を生成して出力し、青青検出回路３０の正常／異常を繰り返し判定することができる。 When 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).
　青出力モニタが同時青でない場合（Ｓ１２でＮＯ）、制御部１０は、例えば、論理和回路２０又は論理和回路２０の前段の回路等に異常があると自己診断し（Ｓ１７）、ステップＳ１５の処理を行う。 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.
　図１１は模擬信号を使用しない場合の正常／異常の判定処理の手順を示すフローチャートである。制御部１０は、論理和回路２０が出力する青出力モニタが同時青を示すか否かを判定し（Ｓ２１）、青出力モニタが同時青である場合（Ｓ２１でＹＥＳ）、青青検出回路３０が出力する青青異常信号がオンであるか否かを判定する（Ｓ２２）。 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).
　青青異常信号がオンである場合（Ｓ２２でＹＥＳ）、制御部１０は、青青検出回路３０が正常であると判定し（Ｓ２３）、灯色が同時青状態であると判定し（Ｓ２４）、すなわち、実際に交通信号制御機１００に故障が発生して、本来禁止されている同時青の状態が生じているとして信号灯器１を閃光表示させ（Ｓ２５）、処理を終了する。 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.
　青青異常信号がオンでない場合（Ｓ２２でＮＯ）、制御部１０は、青青検出回路が異常であると判定し（Ｓ２６）、信号灯器１を閃光表示させて（Ｓ２７）、処理を終了する。 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.
　青出力モニタが同時青でない場合（Ｓ２１でＮＯ）、制御部１０は、青青検出回路３０が出力する青青異常信号がオンであるか否かを判定し（Ｓ２８）、青青異常信号がオンである場合（Ｓ２８でＹＥＳ）、ステップＳ２６の処理を行う。 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.
　青青異常信号がオンでない場合（Ｓ２８でＮＯ）、制御部１０は、青青検出回路が正常であると判定し（Ｓ２９）、信号灯器１の灯色が同時青状態ではないと判定し（Ｓ３０）、処理を終了する。 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.
　上述の実施の形態において、青青検出回路等が異常と判定された場合、異常と判定した日時等を記録することもできる。また、青青検出回路等が正常であると判定した日時を記録してもよい。青青検出回路等の正常又は異常を記録することにより、青青検出回路などの故障の要因を特定する情報として活用することができる。 In the above-described embodiment, when the blue-blue detection circuit or the like is determined to be abnormal, the date and time determined to be abnormal can also 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.
　上述の実施の形態では、主道路と従道路とが交差する交差点を例として説明したが、主道路と従道路が交差する交差点に限定されるものではなく、どのような形態の交差点でも、本実施の形態の交通信号制御機１００を適用することができる。 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.
　開示された実施の形態は、すべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は上記した説明ではなくて請求の範囲によって示され、請求の範囲と均等の意味及び範囲内でのすべての変更が含まれることが意図される。 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　制御部
　１１　生成部
　１２　判定部（判定部、要因判定部、自己診断部）
　２０　論理和回路（青色監視部）
　３０　青青検出回路（禁止状態検出部）
　４０　灯色出力回路
　５０　インタフェース部
　６０　通知部
　７０　現示データ 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 (9)

  1. 　複数の信号灯器の灯色を切り替える交通信号制御機において、
    　各信号灯器の灯色の組み合わせが禁止された状態を模擬するための模擬信号を生成する生成部と、
    　各信号灯器の灯色出力状態及び又は前記生成部で生成した模擬信号に応じて、灯色の組み合わせが禁止された状態であるか否かを示す禁止状態信号を出力する禁止状態検出部と、
    　前記生成部で生成した模擬信号及び／又は前記禁止状態検出部が出力した禁止状態信号に基づいて、該禁止状態検出部の正常／異常を判定する判定部と
    　を備えることを特徴とする交通信号制御機。     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 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.
  2. 　前記生成部で生成した模擬信号及び／又は各信号灯器の灯色出力状態を取得し、取得した灯色出力状態が青である場合、該灯色出力状態及び／又は取得した模擬信号を前記禁止状態検出部へ出力する青色監視部を備え、
    　前記禁止状態検出部は、
    　前記青色監視部から取得した模擬信号及び／又は灯色出力状態が、少なくとも２つの信号灯器の灯色が同時に青であることを示す場合、灯色の組み合わせが禁止された状態である旨の禁止状態信号を出力するように構成してあることを特徴とする請求項１に記載の交通信号制御機。     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. It has 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, wherein the traffic signal controller is configured to output a status signal.
  3. 　前記生成部は、
    　各信号灯器のいずれの灯色も青でない場合、該信号灯器のうち少なくとも２つの信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする請求項２に記載の交通信号制御機。     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 in which the lamp colors of at least two of the signal lamps are blue. The traffic signal controller according to claim 2.
  4. 　前記生成部は、
    　前記信号灯器のいずれか一の信号灯器の灯色が青の場合、該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする請求項２又は請求項３に記載の交通信号制御機。     The generator is
    When the signal color of any one of the signal lamps is blue, it is configured to generate a simulation signal that simulates a state in which the color of the signal lamp other than the one signal lamp is blue. The traffic signal controller according to claim 2, wherein the traffic signal controller is provided.
  5. 　前記生成部は、
    　前記信号灯器のいずれか一の信号灯器の灯色が切り替わった時点から所定時間経過後に、該一の信号灯器とは別の信号灯器の灯色が青である状態を模擬する模擬信号を生成するように構成してあることを特徴とする請求項２又は請求項４に記載の交通信号制御機。     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 when the lamp color of any one of the signal lamps is switched. The traffic signal controller according to claim 2 or 4, wherein the traffic signal controller is configured as described above.
  6. 　前記青色監視部から取得した模擬信号及び／又は灯色出力状態に基づいて、少なくとも２つの信号灯器の灯色が同時に青となる時間に基づいて、灯色が同時に青となる要因が模擬信号によるものか否かを判定する要因判定部を備えることを特徴とする請求項４又は請求項５に記載の交通信号制御機。 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 4, further comprising a factor determination unit that determines whether or not the object is a thing.
  7. 　前記判定部は、
    　前記青色監視部が出力する模擬信号及び／又は灯色出力状態である青監視信号と、前記禁止状態検出部が出力する禁止状態信号とに基づいて、該禁止状態検出部の正常／異常を判定するように構成してあることを特徴とする請求項２乃至請求項６のいずれか１項に記載の交通信号制御機。     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 2 to 6, wherein the traffic signal controller is configured as described above.
  8. 　前記生成部で少なくとも２つの信号灯器の灯色が同時に青になる模擬信号を生成した場合に、前記青色監視部が出力する模擬信号及び／又は灯色出力状態が、少なくとも２つの信号灯器の灯色が同時に青でないことを示すとき、異常と診断する自己診断部を備えることを特徴とする請求項２乃至請求項７のいずれか１項に記載の交通信号制御機。 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 2 to 7, further comprising a self-diagnosis unit that diagnoses an abnormality when the colors indicate not blue at the same time.
  9. 　前記禁止状態検出部の異常を示す異常情報を外部へ通知する通知部を備えることを特徴とする請求項１乃至請求項８のいずれか１項に記載の交通信号制御機。 The traffic signal controller according to any one of claims 1 to 8, further comprising a notification unit that notifies the abnormality information indicating an abnormality of the prohibited state detection unit to the outside.
PCT/JP2012/053316 2012-02-14 2012-02-14 Traffic signal controller WO2013121512A1 (en)

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